Vacuum die-casting system for metal castings

Abstract

The invention relates to a vacuum die-casting system for metal castings. The vacuum die-casting system comprises an original box and a main furnace box installed at the upper end of the original box. A die-casting channel is installed in the original box. A slidable die pressing plate is arranged in the die-casting channel; and the die pressing plate is connected with a movement control assembly for controlling the die pressing plate to move. A pressing rod head is arranged at the left end of the pressing template; the left end of the die-casting channel abuts against the auxiliary die, and a kidney-shaped ring sleeve is arranged on the auxiliary die. And an auxiliary pick-up device is further mounted in the original box. According to the liquid metal feeding device, feeding of liquid metal is controlled in a sliding mode through the plugging plate, the adaptability of controlling the feeding amount of the liquid metal every time is achieved through isolation of the F-shaped blocking plate, and therefore waste of the liquid metal is avoided. By controlling die assembly of the die pressing plate and the auxiliary die, die-casting machining forming of a metal casting can be automatically completed. According to the automatic feeding device, after each time of die casting, automatic feeding of cooled die-casting workpieces can be achieved by controlling movement and 90-degree overturning of the longitudinal plate.

Description

Technical Field

[0001] The invention relates to a processing technology for metal parts, in particular to a vacuum die-casting system for metal castings. Background Art

[0002] Die casting is a metal casting process characterized by applying high pressure to molten metal within a mold cavity. The mold is usually made of a higher-strength alloy, and the process is somewhat similar to injection molding. The main working steps are as follows:

[0003] The raw metal (such as aluminum, zinc, or magnesium alloys) is first heated to a liquid state in a furnace and maintained in a holding furnace. The liquid metal is then injected into the mold using a punch at high pressure (typically 30-150 MPa) and high speed (0.5-60 m / s). The injection path is designed with runners and gates, which accelerate metal flow and facilitate subsequent separation. After filling, pressure must be maintained (during the holding phase) to ensure the metal is dense and free of shrinkage cavities during crystallization and solidification. Finally, the casting is cooled naturally or with forced cooling within the mold, and ejected from the mold after complete solidification.

[0004] At present, traditional die-casting equipment has the problem that the use of liquid metal cannot be stably controlled, which easily leads to waste. Moreover, after the die-casting is completed, it is difficult to control the loading of the die-cast workpiece, which makes subsequent shot blasting, infiltration or machining inconvenient. Summary of the Invention

[0005] In order to overcome the dual defects of the above-mentioned traditional technology, namely, waste of liquid metal and difficulty in subsequent material loading, the present invention proposes a vacuum die-casting system for metal castings.

[0006] The technical problem to be solved by the present invention is achieved by adopting the following technical solutions:

[0007] A vacuum die-casting system for metal castings comprises a primary furnace box and a main furnace box mounted above the primary furnace box. A die-casting channel is installed within the primary furnace box. A slidable die plate is located within the die-casting channel. The die plate is connected to a motion control assembly that controls the movement of the die plate. A storage box is also mounted above the primary furnace box. A display panel and a door are mounted at the front of the primary furnace box. A control cabinet is also placed on the left side of the primary furnace box. The main furnace box stores melted liquid metal, which enters the die-casting channel through the primary furnace box. The die plate, under the control of the motion control assembly, then pushes the liquid metal to the left, performing the die-casting operation.

[0008] The storage tank is used to store solid metal that needs to be melted. The display panel shows the temperature inside the die-casting tunnel. There are two doors, both hingedly mounted on the original box. The control cabinet facilitates manual control of all cylinders and hydraulic cylinders.

[0009] Preferably, a pressing rod head is provided at the left end of the die plate; the left end of the die-casting channel abuts against an auxiliary die, which is provided with a waist-shaped ring sleeve; and an auxiliary retrieval device is also installed in the original box. The auxiliary retrieval device is used to extract and load the die-cast workpiece.

[0010] Preferably, a rectangular slot can be provided at the right end of the auxiliary mold so that the left end of the die-casting channel is fitted into the rectangular slot to improve sealing. Two pressing rod heads are provided, and during die-casting, the pressing rod heads can open two circular grooves on the surface of the workpiece.

[0011] The motion control assembly includes an extension block connected to the die platen, a lead screw connecting the extension block, dual guide rods that slide with the extension block, and a motor connected to the lead screw. A U-shaped holder, securing the motor and extension block, is mounted on the outer wall of the die-casting channel. The lead screw is mounted on the U-shaped holder via a bearing. Driven by the lead screw nut, it controls the sliding movement of the die platen within the die-casting channel to perform the die-casting operation.

[0012] Preferably, a discharge pipe is provided at the lower part of the main furnace box, and a feed port is provided at the upper end of the middle part of the die-casting channel to abut against the discharge pipe. The above structure can facilitate the liquid metal to enter the die-casting channel through the discharge pipe.

[0013] Preferably, a lateral groove is provided at the lower portion of the discharge pipe, a blocking plate is slidably mounted on the lateral groove, and the blocking plate is connected to an I-type cylinder mounted on the outside of the discharge pipe. By controlling the sliding of the blocking plate, whether the liquid metal enters the die casting channel can be controlled.

[0014] The beneficial effects of the present invention are:

[0015] 1. The sliding of the blocking plate is used to control the feeding of liquid metal, and the isolation of the F-type barrier plate is used to achieve the adaptability of controlling the feeding amount of liquid metal each time, thereby avoiding the waste of liquid metal.

[0016] 2. By controlling the clamping of the die plate and the auxiliary die, the die-casting process of metal castings can be automatically completed.

[0017] 3. During the die-casting process, the inner cavity of the entire die-casting channel is well sealed, ensuring the stable implementation of die-casting.

[0018] 4. After each die-casting, the excess liquid metal can be automatically recovered, further avoiding the waste of resources.

[0019] 5. After each die-casting, the cooled die-cast workpiece can be automatically loaded by controlling the movement and 90-degree flipping of the longitudinal plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and examples.

[0021] Figure 1 is a perspective view of the present invention;

[0022] Figure 2 is a top view of the present invention;

[0023] Figure 3 yes Figure 2 AA section view;

[0024] Figure 4 yes Figure 3 A local enlarged view of location I;

[0025] Figure 5 This is a structural diagram of the present invention after removing the display panel and the door;

[0026] Figure 6 yes Figure 5 A partial enlarged view of location II;

[0027] Figure 7 yes Figure 3 A partial enlarged view of point III;

[0028] Figure 8 It is the structural diagram of the auxiliary mold;

[0029] Figure 9 yes Figure 5 The second perspective structure diagram;

[0030] Figure 10 yes Figure 5 The third perspective structure diagram;

[0031] Figure 11 yes Figure 10 A partial enlarged view of IV;

[0032] Figure 12 It is a structural diagram of the die-casting channel;

[0033] Figure 13 yes Figure 9 A local enlarged view of the V part;

[0034] Figure 14 yes Figure 10 A partial enlarged view of point VI;

[0035] Figure 15 This is an implementation effect diagram of the present invention.

[0036] In the figure: 1, original box; 2, main furnace box; 2a, discharge pipe; 2aa, lateral groove; 3, die casting channel; 3a, feed port; 3b, lateral groove; 3c, clamping plate; 4, die plate; 5, extension block; 6, lead screw; 7, double guide rod; 8, motor; 9, U-shaped clamping seat; 10, blocking plate; 11, type I cylinder; 12, F-type baffle plate; 13, type II cylinder; 14, auxiliary mold; 14a, waist-shaped ring; 14b, rectangular clamping groove; 1 5. Type I hydraulic cylinder; 16. Lateral guide rod; 17. Collecting box; 18. Discharging round rod; 19. Closing plate; 20. Type III cylinder; 21. Vibrating motor; 22. Longitudinal plate; 22a. Center rod; 22b. Steering rod; 23. Large flat plate; 23a. Arc groove; 24. Type II hydraulic cylinder; 25. Inclined guide rail; 26. Distribution block; 26a. Reverse inclined groove; 27. Control cabinet; 28. Display panel; 29. Warehouse door; 30. Storage box. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be explained more clearly and completely below in conjunction with the drawings in the embodiments. Of course, the described embodiments are only a part of the present invention, not all of it. Based on this embodiment, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0038] like Figures 1 to 4 As shown, a vacuum die-casting system for metal castings comprises an original box 1 and a main furnace box 2 mounted above the original box 1. A die-casting channel 3 is installed within the original box 1. A slidable die plate 4 is located within the die-casting channel 3. The die plate 4 is connected to a motion control assembly that controls the movement of the die plate 4. A storage tank 30 is also mounted above the original box 1. A display panel 28 and a compartment door 29 are mounted at the front end of the original box 1. A control cabinet 27 is also placed on the left side of the original box 1. The main furnace box 2 stores melted liquid metal, which enters the die-casting channel 3 through the original box 1. The die plate 4, under the control of the motion control assembly, then pushes the melted metal to the left, performing the die-casting operation.

[0039] The storage tank 30 is used to store solid metal that needs to be melted. The display panel 28 is used to display the temperature inside the die-casting channel 3. There are two doors 29, both hingedly mounted on the original box 1. The control cabinet 27 is used to facilitate manual control of all cylinders and hydraulic cylinders.

[0040] like Figure 3 、 Figure 7 as well as Figure 8As shown, the left end of the die plate 4 is provided with a pressing rod head 4a; the left end of the die casting channel 3 abuts against the auxiliary die 14, which is provided with a waist-shaped ring sleeve 14a; and an auxiliary retrieval device is also installed in the original box 1. The auxiliary retrieval device is used to extract and load the die-cast workpiece.

[0041] As an improvement to the present invention, a rectangular slot 14b can be provided at the right end of the auxiliary mold 14, so that the left end of the die-casting channel 3 abuts against the rectangular slot 14b, thereby improving the sealing performance. Two pressing rod heads 4a are provided, and during die-casting, the pressing rod heads 4a can open two circular grooves on the surface of the workpiece.

[0042] like Figures 4 to 6 As shown, the motion control assembly includes an extension block 5 connected to the die plate 4, a lead screw 6 connected to the extension block 5, a double guide rod 7 that slides with the extension block 5, and a motor 8 connected to the lead screw 6. A U-shaped holder 9 is mounted on the outer wall of the die-casting channel 3, securing the motor 8 and the extension block 5. The lead screw 6 is mounted on the U-shaped holder 9 via a bearing. That is, it is driven by the lead screw nut to control the sliding of the die plate 4 within the die-casting channel 3 to perform the die-casting operation.

[0043] like Figure 4 As shown, a discharge pipe 2a is provided at the lower portion of the main furnace box 2, and a feed port 3a is provided at the upper end of the middle portion of the die casting channel 3 to abut against the discharge pipe 2a. The above structure facilitates the liquid metal to enter the die casting channel 3 through the discharge pipe 2a.

[0044] like Figure 4 As shown, the lower portion of the discharge pipe 2a is provided with a lateral groove 2aa, on which a blocking plate 10 is slidably mounted. This blocking plate 10 is connected to an I-shaped cylinder 11 mounted on the outside of the discharge pipe 2a. This is a conventional design for a sliding structure. By controlling the sliding movement of the blocking plate 10, it is possible to control whether the liquid metal enters the die-casting channel 3.

[0045] like Figures 10 to 12 As shown, the die-casting channel 3 also has a lateral groove 3b in the middle. An F-type baffle plate 12 is slidably mounted in this lateral groove 3b, connected to a Type II cylinder 13. This Type II cylinder 13 is fixedly mounted on the outer wall of the die-casting channel 3. The F-type baffle plate 12 blocks the interior of the die-casting channel 3, thereby limiting the amount of liquid metal entering the die-casting channel 3 through the discharge pipe 2a at a time. During pressing, the F-type baffle plate 12 needs to be removed to ensure the sliding of the die plate 4.

[0046] like Figure 9 、 Figure 12 as well as Figure 13As shown, a slidably mounted closing plate 19 is attached to the lower left portion of the die-casting channel 3. This closing plate 19 is connected to a Type III air cylinder 20 mounted on the outer wall of the die-casting channel 3. A retaining plate 3c is provided at the left end of the die-casting channel 3, which fits within the waist-shaped ring 14a. This retaining plate 3c engages the outer side of the waist-shaped ring 14a, further preventing leakage of liquid metal during die-casting. After each die-casting operation, the Type III air cylinder 20 pushes the closing plate 19 open to release excess liquid metal.

[0047] like Figure 9 As shown, the bottom of the original box 1 is also equipped with a collection box 17 and a discharge rod 18. The collection box 17 is located directly below the closing plate 19 and is used to collect excess liquid metal. The discharge rod 18 is the loading point for the workpiece after die casting.

[0048] like Figure 9 and Figure 13 As shown, the auxiliary removal device includes a longitudinal plate 22, an I-type hydraulic cylinder 15, and a lateral guide rod 16, both mounted on the longitudinal plate 22. The I-type hydraulic cylinder 15 is connected to the auxiliary die 14, which slides with the lateral guide rod 16. A vibration motor 21 is mounted on the left end of the auxiliary die 14. This is a conventional design for a controlled sliding mechanism. After die casting is completed, the I-type hydraulic cylinder 15 is pulled to release the auxiliary die 14 from the die casting channel 3.

[0049] like Figure 13 As shown, the rear end of the longitudinal plate 22 is equipped with a center rod 22a and a steering rod 22b. The auxiliary retrieval device also includes a large flat plate 23 installed in the original box 1. The center rod 22a is connected to the large plate 23 via a bearing. The large plate 23 is provided with an arc groove 23a that slides and hinges with the steering rod 22b. The center angle of the arc groove 23a is 90 degrees, and the center position of the arc groove 23a corresponds to the position of the center rod 22a. In other words, the entire longitudinal plate 22 can rotate about the center rod 22a to facilitate workpiece loading.

[0050] like Figure 10 and Figure 14 As shown, the auxiliary retrieval device also includes a Type II hydraulic cylinder 24 and an inclined guide rail 25, both mounted on the rear end of the large flat plate 23. The Type II hydraulic cylinder 24 is connected to a delivery block 26 that slides with the inclined guide rail 25. The delivery block 26 is provided with a reverse slant slot 26a that slides and hinges with the steering rod 22b. This is a multi-sliding structure designed primarily to control the rotation of the longitudinal plate 22 about the center rod 22a.

[0051] During use, the operator only needs to pour the hot-melt liquid metal into the main furnace box 2 , and then the I-type cylinder 11 pushes the sealing plate 10 to allow a certain amount of liquid metal to enter the die-casting channel 3 .

[0052] Furthermore, the I-type cylinder 11 pulls the blocking plate 10 to close the upper end of the die-casting channel 3 again, and the II-type cylinder 13 pushes the F-type blocking plate 12 to remove the blockage of the inner cavity of the die-casting channel 3.

[0053] Furthermore, the motor 8 drives the screw 6 to rotate. Under the transmission action of the screw nut, the die plate 4 moves to the left and cooperates with the auxiliary mold 14 to complete the die casting. After holding the pressure for a certain period of time, the die-cast workpiece is as follows. Figure 15 shown.

[0054] Furthermore, the III-type cylinder 20 pushes open the closing plate 19 to release the excess liquid metal in the inner cavity of the die-casting channel 3, which is convenient for subsequent recycling.

[0055] Finally, the type I hydraulic cylinder 15 pulls the auxiliary mold 14, and the type II hydraulic cylinder 24 pushes the delivery block 26, so that the steering rod 22b moves along the trajectory of the arc groove 23a, so that the longitudinal plate 22 and the workpiece are rotated 90 degrees. After cooling for a certain period of time, the vibration motor 21 works and vibrates the workpiece out of the waist-shaped ring sleeve 14a and into the unloading round roller 18, completing the loading.

[0056] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and description merely illustrate the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A vacuum die-casting system for metal castings, comprising an original box (1) and a main furnace box (2) mounted on the upper end of the original box (1); characterized in that: A die-casting channel (3) is installed inside the original box (1); a slidable die-casting plate (4) is provided inside the die-casting channel (3); the die-casting plate (4) is connected to a movement control component for controlling the movement of the die-casting plate (4); The left end of the pressing plate (4) is provided with a pressing rod head (4a); the left end of the die-casting channel (3) abuts against the auxiliary mold (14), and the auxiliary mold (14) is provided with a waist-shaped ring sleeve (14a); and an auxiliary piece-taking device is also installed in the original box (1).

2. A metal casting vacuum die-casting system according to claim 1, characterized in that: The movement control assembly comprises an extension block (5) connected to a die plate (4), a lead screw (6) connected to the extension block (5), a double guide rod (7) slidingly matched with the extension block (5), and a motor (8) connected to the lead screw (6); a U-shaped holder (9) for fixing the motor (8) and the extension block (5) is installed on the outer wall of the die-casting channel (3).

3. A vacuum die-casting system for metal castings according to claim 1, characterized in that: A discharge pipe (2a) is provided at the lower portion of the main furnace box (2), and a feed port (3a) is provided at the upper end of the middle portion of the die-casting channel (3) and is abutted against the discharge pipe (2a).

4. A vacuum die-casting system for metal castings according to claim 3, characterized in that: A lateral groove (2aa) is provided at the lower portion of the discharge pipe (2a), a blocking plate (10) is slidably mounted on the lateral groove (2aa), and the blocking plate (10) is connected to an I-type cylinder (11) mounted on the outside of the discharge pipe (2a).

5. A vacuum die-casting system for metal castings according to claim 3, characterized in that: A lateral groove (3b) is also provided in the middle of the die-casting channel (3), and an F-type baffle plate (12) is slidably installed in the lateral groove (3b) and is connected to a II-type cylinder (13). The II-type cylinder (13) is fixedly installed on the outer side wall of the die-casting channel (3).

6. A metal casting vacuum die-casting system according to claim 1, characterized in that: The auxiliary piece-picking device comprises a longitudinal plate (22) and an I-type hydraulic cylinder (15) and a lateral guide rod (16) both mounted on the longitudinal plate (22); the I-type hydraulic cylinder (15) is connected to the auxiliary mold (14), and the auxiliary mold (14) and the lateral guide rod (16) are slidably matched; a vibration motor (21) is mounted on the left end of the auxiliary mold (14).

7. The vacuum die-casting system for metal castings according to claim 1, characterized in that: A collecting box (17) and a discharge round stick (18) are also placed on the bottom of the original box (1).

8. The vacuum die-casting system for metal castings according to claim 1, characterized in that: A closing plate (19) is slidably mounted on the lower left portion of the die-casting channel (3), and the closing plate (19) is connected to a type III cylinder (20) mounted on the outer side wall of the die-casting channel (3); a clamping plate portion (3c) adapted to the waist-shaped ring sleeve (14a) is provided at the left end of the die-casting channel (3).

9. The vacuum die-casting system for metal castings according to claim 6, characterized in that: The rear end of the longitudinal plate (22) is respectively provided with a central rod (22a) and a steering rod (22b); the auxiliary picking device also includes a large flat plate (23) installed in the original box (1); the central rod (22a) is connected to the large flat plate (23) through a bearing; the large flat plate (23) is provided with an arc groove (23a) that slides and hinges with the steering rod (22b).

10. A vacuum die-casting system for metal castings according to claim 9, characterized in that: The auxiliary picking device also includes a type II hydraulic cylinder (24) and an inclined guide rail (25) both mounted on the rear end of the large flat plate (23); the type II hydraulic cylinder (24) is connected to a delivery block (26) that is slidably engaged with the inclined guide rail (25); and the delivery block (26) is provided with an anti-bevel groove (26a) that is slidably engaged with the steering rod (22b) and is hingedly engaged.

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