Vacuumizing structure capable of giving air leakage alarm

Abstract

The utility model discloses a vacuumizing structure capable of alarming air leakage, which comprises a fixed template, a vacuumizing assembly and an anti-blocking block, a movable template is arranged on the left side of the fixed template, a die-casting cavity is arranged between the fixed template and the movable template, the vacuumizing assembly comprises a vacuum pump, a vacuum meter, an air delivery pipe and an air exhaust hole, and the air exhaust hole is communicated with the vacuum pump. The vacuum meter is arranged on the right side of the upper end of the gas conveying pipe, the vacuum pump is arranged below the vacuum meter, the anti-blocking block is located at the bottom end of the inner side of the mounting hole, an internal thread is arranged at the top of the inner wall of the anti-blocking block, and a first baffle is arranged below the internal thread; a second baffle is arranged below the first baffle, and convex threads are arranged at the bottom of the outer side of the anti-blocking block. When air leakage occurs in the die-casting cavity, detection can be carried out in advance, reminding can be carried out, and the situation that molten aluminum flows out or produced products are unqualified due to the fact that the molten aluminum is still continuously added into the die-casting cavity is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of die-casting of new energy vehicles, in particular to a vacuum pumping structure capable of providing an air leakage alarm. Background Art

[0002] Vacuum die-casting is an advanced die-casting process that removes the gas in the die-casting mold cavity during the die-casting process to eliminate or significantly reduce the pores and dissolved gases in the die-casting, thereby improving the mechanical properties and surface quality of the die-casting. For example, the patent document with application number CN202310246772.2 discloses an aluminum alloy shell die-casting mold, which detects whether the die-casting tank is in an incompletely sealed state by setting a side wind speed component at the edge where the upper and lower sets of templates are connected, and then injecting high-pressure airflow into the die-casting tank through a pressure supply pipe.

[0003] However, in similar solutions mentioned above, during the long-term use of the mold, the closing position of the upper and lower templates deviates, resulting in incomplete sealing. Continuing to add molten aluminum causes the molten aluminum to flow out or the produced products are unqualified. In addition, when the impact force on the molten aluminum is too great, the molten aluminum splashes on the exhaust hole. After long-term use, the molten aluminum will solidify and block the exhaust hole.

[0004] Therefore, in view of this, the existing structural deficiencies are studied and improved, and a vacuum pumping structure with a leak alarm is proposed. Summary of the invention

[0005] In view of the deficiencies in the prior art, the utility model provides a vacuum pumping structure with a leakage alarm, which solves the problem that the above-mentioned similar scheme proposed in the above-mentioned background technology, during the long-term use of the mold, the closing position of the upper and lower templates deviates, resulting in incomplete sealing, and aluminum liquid continues to be added inside, causing the aluminum liquid to flow out or the produced products to be unqualified. Moreover, when the impact force applied to the aluminum liquid is too large, the aluminum liquid splashes on the exhaust hole. After long-term use, the aluminum liquid will solidify and block the exhaust hole.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a vacuum pumping structure with air leakage alarm, comprising a fixed template, a vacuum pumping assembly and an anti-blocking block, a movable template is arranged on the left side of the fixed template, and a die-casting cavity is arranged between the fixed template and the movable template, a mounting hole is arranged above the die-casting cavity, and the vacuum pumping assembly is located at the upper end surface of the fixed template, the vacuum pumping assembly comprises a vacuum pump, a vacuum gauge, an air pipe and an air extraction hole, and the air pipe is arranged on the inner side of the mounting hole, and the air extraction hole is arranged at the lower end of the air pipe, the vacuum gauge is arranged on the right side of the upper end of the air pipe, and the vacuum pump is arranged below the vacuum gauge, the anti-blocking block is located at the inner bottom end of the mounting hole, and the top of the inner wall of the anti-blocking block is arranged with an internal thread, and a first baffle is arranged below the internal thread, a second baffle is arranged below the first baffle, and a convex thread is arranged at the outer bottom of the anti-blocking block.

[0007] Furthermore, a feeding pipe is provided through the right side of the fixed template, and a plurality of groups of supporting rods are provided through the inner side of the movable template.

[0008] Furthermore, a sealing ring is bonded to the right side of the movable template, and a plurality of groups of protrusions are equidistantly arranged on the inner and outer sides of the sealing ring.

[0009] Furthermore, a sealing groove adapted to the sealing ring is provided on the left end surface of the fixed template, and a push switch is provided above the sealing ring, and the push switch is connected to the vacuum pump through a wire.

[0010] Furthermore, the anti-blocking block forms a disassembly structure with the air pipe and the fixed template through the internal thread and the convex thread, and the first baffle plate and the second baffle plate are installed in a staggered manner.

[0011] Furthermore, an alarm light is provided on the right side of the vacuum pump, and a vacuum sensor is provided at the connection between the air supply pipe and the vacuum pump.

[0012] The utility model provides a vacuum pumping structure for an air leakage alarm, which has the following beneficial effects:

[0013] It can detect and remind you in advance when leakage occurs in the die casting cavity, so as to avoid the situation where aluminum liquid continues to be added, causing aluminum liquid to flow out or the quality of the produced products is unqualified. In addition, when aluminum liquid splashes on the exhaust hole, it is convenient to clean the exhaust hole, so as to prevent the aluminum liquid from solidifying and clogging the exhaust hole. The specific contents are as follows:

[0014] The movement of the movable platen toward the fixed platen closes the sealing ring and the sealing groove, thereby improving the sealing of the connection. After closing, the vacuum pump starts, and the vacuum pump extracts the air in the die-casting cavity through the air pipe until the die-casting cavity is in a vacuum state. The air pressure change in the air pipe is detected by the vacuum sensor and converted into a signal to be transmitted to the vacuum gauge and the control center. Only when the die-casting cavity is in a vacuum, the control center transmits the signal to the feeding device and performs die-casting. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main cross-sectional structure of a vacuum pumping structure capable of providing an air leakage alarm according to the utility model;

[0016] Figure 2 This is a schematic diagram of the main structure of a vacuum pumping structure capable of providing an air leakage alarm according to the utility model;

[0017] Figure 3 This is a schematic diagram of the anti-blocking block structure of a vacuum pumping structure with air leakage alarm according to the utility model;

[0018] Figure 4 The utility model is a schematic diagram of the top structure of a vacuum pumping structure with air leakage alarm.

[0019] In the figure: 1. fixed template; 101. mounting hole; 102. sealing groove; 2. feeding pipe; 3. moving template; 4. support rod; 5. die casting cavity; 6. sealing ring; 61. protrusion; 7. push switch; 8. vacuum assembly; 801. vacuum pump; 802. vacuum gauge; 803. gas pipe; 804. exhaust hole; 9. anti-blocking block; 91. internal thread; 92. first baffle; 93. second baffle; 94. convex thread; 10. alarm light; 101. vacuum sensor. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0021] like Figures 1 to 4 As shown, a vacuum pumping structure with air leakage alarm includes a fixed template 1, a vacuum pumping assembly 8 and an anti-blocking block 9, a movable template 2 is arranged on the left side of the fixed template 1, a feeding pipe 2 is arranged through the right side of the fixed template 1, and is used to add high-temperature aluminum liquid into the die-casting cavity 5, and a plurality of groups of support rods 4 are arranged through the inner side of the movable template 2, which are used to support the movable template 2 and make it move in a straight line, and a die-casting cavity 5 is arranged between the fixed template 1 and the movable template 2, and a mounting hole 101 is arranged above the die-casting cavity 5, which is used to connect the air delivery pipe 803 with the die-casting cavity 5, and a device at the upper end of the fixed template 1 can prevent the high-temperature aluminum liquid from pouring into the suction hole 804;

[0022] A sealing ring 6 is bonded to the right side of the movable template 2, and a plurality of groups of protrusions 61 are equidistantly arranged on the inner and outer sides of the sealing ring 6. A sealing groove 102 adapted to the sealing ring 6 is arranged on the left end face of the fixed template 1. The diameter of the sealing ring 6 is equal to the diameter of the sealing groove 102 and the central axis coincides, so that when the movable template 3 and the fixed template 1 are closed, the sealing ring 6 can be engaged with the sealing groove 102, thereby improving the sealing around the die-casting cavity 5, and the protrusion 61 can improve the tightness during the connection, and a push switch 7 is arranged above the sealing ring 6, and the push switch 7 is connected to the vacuum pump 801 through a wire, and the vacuum pump 801 is automatically turned on by pressing the push switch 7 when closed, thereby reducing the manual operation steps.

[0023] The vacuum assembly 8 is located on the upper end surface of the fixed mold plate 1. The vacuum assembly 8 includes a vacuum pump 801, a vacuum gauge 802, an air pipe 803 and an air extraction hole 804. The air pipe 803 is arranged on the inner side of the mounting hole 101, and the air extraction hole 804 is arranged at the lower end of the air pipe 803. A vacuum gauge 802 is arranged on the right side of the upper end of the air pipe 803, and a vacuum pump 801 is arranged below the vacuum gauge 802. The vacuum pump 801 extracts air into the die-casting cavity 5 through the air pipe 803, and the vacuum gauge 802 enables the staff to visually measure the pressure in the die-casting cavity 5, which can When air leakage occurs in the die casting cavity, it can be detected in advance. A vacuum sensor 11 is provided at the connection between the air delivery pipe 803 and the vacuum pump 801. The model of the vacuum sensor 11 is KF16. An alarm light 10 is provided on the right side of the vacuum pump 801. The signal is transmitted to the vacuum meter 802 and the control center through the vacuum sensor 11. If the internal air pressure does not meet the standard, the signal is transmitted to the signal light 10. The flashing signal reminds the staff to perform maintenance before adding liquid to avoid the situation where the aluminum liquid continues to be added, resulting in the outflow of aluminum liquid or the quality of the produced products is unqualified.

[0024] The anti-blocking block 9 is located at the inner bottom end of the mounting hole 101, and an internal thread 91 is provided on the top of the inner wall of the anti-blocking block 9, and a convex thread 94 is provided on the outer bottom of the anti-blocking block 9. The anti-blocking block 9 forms a disassembly structure with the gas pipe 803 and the fixed template 1 through the internal thread 91 and the convex thread 94, which is convenient for disassembling the anti-blocking block 9 at any time, thereby facilitating the cleaning of the aluminum liquid, and a first baffle plate 92 is provided below the internal thread 91, and a second baffle plate 93 is provided below the first baffle plate 92, and the first baffle plate 92 and the second baffle plate 93 are staggeredly installed to prevent the aluminum liquid from splashing on the exhaust hole 804, and the aluminum liquid solidifies and blocks the exhaust hole 804.

[0025] In summary, when the vacuum pumping structure with air leakage alarm is used, first, the movable template 3 is moved along the support rod 4 to the left side of the fixed template 1 through the driving device. At this time, the sealing ring 6 is inserted into the inner side of the sealing groove 102 until it is closed with the fixed template 1. At this time, the right side of the press switch 7 is supported by the fixed template 1, so that the vacuum pump 801 is turned on. The vacuum pump 801 extracts the air in the die-casting cavity 5 through the air pipe 803. The vacuum sensor 11 detects the air pressure change in the air pipe and converts it into a signal to transmit to the vacuum meter 802 and the control center. If there is an air leakage in the die-casting cavity 5, it can be detected by the vacuum sensor 11 and converted into a signal to transmit to the control center. The control center stops feeding into the feeding pipe 2 and transmits a signal to the alarm light 10, and makes the alarm light 10 flash to remind the staff and make corrections in time. When the vacuum gauge 802 shows that the die-casting cavity 5 is in a vacuum state, the vacuum pump 801 stops, and the control center transmits a signal to the feeding device and performs die-casting. The high-temperature aluminum liquid enters through the feeding pipe 2 and quickly fills the entire die-casting cavity 5. When the aluminum liquid splashes upward, it is blocked by the first baffle 92 and the second baffle 93, thereby avoiding clogging the exhaust hole 804. After the die-casting is completed, the anti-blocking block 9 can be removed from the device through the internal thread 91 and the convex thread 94, and cleaned.

Claims

1. A vacuum pumping structure with a gas leakage alarm, comprising a fixed plate (1), a vacuum pumping assembly (8) and an anti-blocking block (9), characterized in that: A movable die plate (3) is arranged on the left side of the fixed die plate (1), and a die casting cavity (5) is arranged between the fixed die plate (1) and the movable die plate (3), a mounting hole (101) is arranged above the die casting cavity (5), and the vacuum pumping component (8) is located on the upper end surface of the fixed die plate (1), the vacuum pumping component (8) comprises a vacuum pump (801), a vacuum gauge (802), an air supply pipe (803) and an air extraction hole (804), and the air supply pipe (803) is arranged on the inner side of the mounting hole (101), and a lower end of the air supply pipe (803) is provided with a The vacuum hole (804) is provided with the vacuum gauge (802) on the right side of the upper end of the gas delivery pipe (803), and the vacuum pump (801) is provided below the vacuum gauge (802), the anti-blocking block (9) is located at the inner bottom end of the mounting hole (101), and the top of the inner wall of the anti-blocking block (9) is provided with an internal thread (91), and a first baffle plate (92) is provided below the internal thread (91), a second baffle plate (93) is provided below the first baffle plate (92), and a convex thread (94) is provided at the outer bottom of the anti-blocking block (9).

2. A vacuum pumping structure with air leakage alarm according to claim 1, characterized in that: A feeding pipe (2) is provided through the right side of the fixed die plate (1), and a plurality of groups of support rods (4) are provided through the inner side of the movable die plate (3).

3. A vacuum pumping structure with air leakage alarm according to claim 2, characterized in that: A sealing ring (6) is bonded to the right side of the movable platen (3), and a plurality of groups of protrusions (61) are equidistantly arranged on both inner and outer sides of the sealing ring (6).

4. A vacuum pumping structure with air leakage alarm according to claim 3, characterized in that: A sealing groove (102) adapted to the sealing ring (6) is provided on the left end surface of the fixed mold plate (1), and a push switch (7) is provided above the sealing ring (6), and the push switch (7) is connected to the vacuum pump (801) via a wire.

5. The vacuum pumping structure with air leakage alarm according to claim 1, characterized in that: The anti-blocking block (9) forms a disassembly structure with the gas delivery pipe (803) and the fixed mold plate (1) through the internal thread (91) and the convex thread (94), and the first baffle plate (92) and the second baffle plate (93) are installed in a staggered manner.

6. The vacuum pumping structure with air leakage alarm according to claim 1, characterized in that: An alarm light (10) is provided on the right side of the vacuum pump (801), and a vacuum sensor (11) is provided at the connection between the air delivery pipe (803) and the vacuum pump (801).

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