Full-automatic reverse molding machine

Abstract

The invention discloses a full-automatic reverse molding machine which comprises a base, a main shell and a plc control box are fixedly arranged at the top of the base, a smelting cavity is fixedly formed in the main shell, an independent casting cavity is connected to the bottom of the smelting cavity, a closed air cylinder is arranged at the bottom of the casting cavity, and the closed air cylinder is connected with the main shell. The full-automatic reverse molding machine controlled through a plc is designed, an electromagnetic heating ring is matched with a temperature induction alarm function, heating is conducted accurately and rapidly to the temperature at which metal raw materials in the smelting cavity are changed into metal liquid, a prompt is given out, and therefore the metal raw materials in the smelting cavity are heated to the temperature at which the metal raw materials are converted into the metal liquid. Automatic closing and opening of the casting cavity are achieved through the closing air cylinder, the casting cavity is matched with automatic lifting of the lifting air cylinder in the casting cavity, product molds are placed and taken, and the overall operation is faster, more convenient, more efficient and safer; the plc has a processing parameter storage function, and can record and store various jewelry processing technological parameters.

Description

Technical Field

[0001] The present invention belongs to the technical field of die casting machines, and particularly relates to a fully automatic die casting machine. Background Art

[0002] Gold is the elemental form of the chemical element gold. It is a soft, yellowish, corrosion-resistant precious metal. Gold is one of the rarer, more precious, and highly regarded metals. Jewelry refers to ornaments worn on the head. Now, jewelry generally refers to hairpins, earrings, necklaces, rings, bracelets, etc. made of precious metals, gemstones, etc. With the improvement of people's living standards, gold jewelry is becoming increasingly popular. Die casting equipment is a casting machine that uses melting and casting by die casting, and occupies an important position in the jewelry manufacturing industry.

[0003] In the existing die casting equipment for jewelry processing, there are too many defective products, such as sand holes, air holes, shrinkage, uneven fineness, and large losses. Therefore, the present invention designs a fully automatic die casting machine. Summary of the Invention

[0004] The purpose of the present invention is to provide a fully automatic die casting machine to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A fully automatic die casting machine includes a base. A main housing and a PLC control box are fixedly arranged on the top of the base. A melting cavity is fixedly arranged on the main housing. The bottom of the melting cavity is connected to an independent casting cavity. A closing cylinder is arranged at the bottom of the casting cavity. A pair of guide rods are connected between the closing cylinder and the melting cavity, and the closing cylinder is fixedly connected to the guide rods. The casting cavity is rotatably installed on one of the guide rods through a connecting sleeve, and the casting cavity can be mutually closed and communicated with or separated from the melting cavity through the lifting movement of the closing cylinder. An openable melting cavity top cover is arranged at the top of the melting cavity. A graphite crucible for melting metal is arranged in the melting cavity. A drain port is arranged at the bottom end of the graphite crucible. A quartz protective sleeve is sleeved outside the graphite crucible. A heating mechanism with temperature sensing is arranged outside the quartz protective sleeve. A plunger sealing mechanism for controlling the drain port is also arranged in the melting cavity. A product mold aligned with the drain port is arranged in the casting cavity. A mold protective sleeve is sleeved outside the product mold. A lifting cylinder for lifting the mold protective sleeve and the product mold is arranged at the inner bottom end of the casting cavity.

[0006] Preferably, the heating mechanism with temperature sensing includes an electromagnetic heating coil sleeved outside the quartz protective sleeve. The upper and lower ends of the electromagnetic heating coil are respectively fixed to the inside of the melting cavity through an upper fixing ring and a lower fixing ring. A temperature detection sensor is also arranged in the melting cavity.

[0007] One end of the top cover of the smelting chamber is rotatably sleeved on a guide rod, and the other end of the top cover of the smelting chamber is snap-connected to another guide rod. A viewing window of the smelting chamber cover is arranged on the top cover of the smelting chamber.

[0008] Preferably, a product viewing window for observing the interior of the smelting chamber is arranged on the outer side of the smelting chamber body, and a closed sealing structure for sealing is arranged at the connection between the smelting chamber body and the casting chamber.

[0009] Preferably, the plunger sealing mechanism includes a graphite plug rod movably located in a graphite crucible, a transmission rod installed at the top end of the graphite plug rod, and a driving servo motor installed on the inner side of the main housing. The output end of the driving servo motor is connected to one end of the transmission rod, and the driving servo motor drives the transmission rod to swing up and down. The bottom end of the graphite plug rod seals along the liquid discharge port.

[0010] Preferably, a motor chamber for sealing and installing the driving servo motor is arranged inside the main housing, and the connection between the motor chamber and the smelting chamber body is hermetically connected.

[0011] Preferably, a handle is arranged on the outer surface of the casting chamber, and a cooling system is also arranged on the casting chamber. The cooling system includes a water inlet and a water outlet arranged on the outer side surface of the casting chamber, and a hollow cooling chamber communicated with the water inlet and the water outlet is arranged inside the casting chamber.

[0012] Preferably, the plc control box includes a display screen for displaying operation parameters, a plc controller for controlling the equipment, a storage module for recording working parameters, and an operation button for starting the equipment.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The present invention designs a fully automatic die casting machine controlled by plc. Through the electromagnetic heating coil and the temperature induction alarm function, it can accurately and quickly heat to the temperature at which the metal raw materials in the smelting chamber body become metal liquid and give a prompt. The automatic closing and opening of the casting chamber are realized through the closing cylinder, and the automatic lifting and lowering are coordinated with the internal lifting cylinder to complete the placement and taking of the product mold. The overall operation is faster, more convenient, more efficient and safer;

[0015] The plc control of the present invention has a processing parameter storage function, and can record and store various jewelry processing process parameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0017] Figure 2 is a sectional structural schematic diagram of the present invention;

[0018] Figure 3 Schematic front view structure diagram of the present invention;

[0019] Figure 4 Schematic top view structure diagram of the present invention;

[0020] Figure 5 Partial structure schematic diagram of the heating mechanism of the present invention;

[0021] In the figure: 1, base; 2, main housing; 3, plc control box; 4, smelting cavity; 5, smelting cavity top cover; 6, smelting cavity cover viewing window; 7, casting cavity; 8, connecting sleeve; 9, closing cylinder; 10, guide rod; 11, handle; 12, product viewing window; 13, graphite plug rod; 14, transmission rod; 15, driving servo motor; 16, product mold; 17, mold protection sleeve; 18, lifting cylinder; 19, closing and sealing structure; 20, graphite crucible; 21, quartz protection sleeve; 22, electromagnetic heating coil; 23, upper fixing ring; 24, lower fixing ring. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Embodiment 1

[0024] Please refer to Figure 1 and Figure 5, the present invention provides a technical solution: a fully automatic die casting machine, including a base 1, on the top of the base 1, a main housing 2 and a PLC control box 3 are fixedly arranged. On the main housing 2, a melting cavity 4 is fixedly arranged. At the bottom of the melting cavity 4, an independent casting cavity 7 is connected. At the bottom of the casting cavity 7, a closing cylinder 9 is arranged. Between the closing cylinder 9 and the melting cavity 4, a pair of guide rods 10 are connected, and the closing cylinder 9 is fixedly connected with the guide rods 10. The casting cavity 7 is rotatably installed on one of the guide rods 10 through a connecting sleeve 8. And the casting cavity 7 can be mutually closed and communicated with or separated from the melting cavity 4 through the lifting movement of the closing cylinder 9. On the top of the melting cavity 4, an openable melting cavity top cover 5 is arranged. Inside the melting cavity 4, a graphite crucible 20 for melting metal is arranged. At the bottom end of the graphite crucible 20, a liquid discharge port is arranged. Outside the graphite crucible 20, a quartz protective sleeve 21 is sleeved. Outside the quartz protective sleeve 21, a heating mechanism with temperature induction is arranged. Inside the melting cavity 4, a plunger sealing mechanism for controlling the liquid discharge port is also arranged. Inside the casting cavity 7, a product mold 16 aligned with the liquid discharge port is arranged. Outside the product mold 16, a mold protective sleeve 17 is sleeved. At the inner bottom end of the casting cavity 7, a lifting cylinder 18 for lifting the mold protective sleeve 17 and the product mold 16 is arranged. In this embodiment, preferably, the heating mechanism with temperature induction includes an electromagnetic heating coil 22 sleeved outside the quartz protective sleeve 21. The upper and lower ends of the electromagnetic heating coil 22 are respectively fixed to the inner side of the melting cavity 4 through an upper fixing ring 23 and a lower fixing ring 24. Inside the melting cavity 4, a temperature detection sensor is also arranged. In this embodiment, preferably, one end of the melting cavity top cover 5 is rotatably sleeved on one of the guide rods 10, and the other end of the melting cavity top cover 5 is snap-connected with the other guide rod 10. In order to facilitate the opening and closing of the melting cavity top cover 5, a melting cavity cover viewing window 6 is arranged on the melting cavity top cover 5. On the outside of the melting cavity 4, a product viewing window 12 for observing the inside of the melting cavity 4 is arranged. At the connection between the melting cavity 4 and the casting cavity 7, a closing and sealing structure 19 for sealing is arranged, in order to play a sealing role and ensure the stability of the internal temperature. In this embodiment, preferably, the plunger sealing mechanism includes a graphite plug rod 13 movably located inside the graphite crucible 20, a transmission rod 14 installed at the top end of the graphite plug rod 13, and a driving servo motor 15 installed inside the main housing 2. The output end of the driving servo motor 15 is connected with one end of the transmission rod 14, and the driving servo motor 15 drives the transmission rod 14 to swing up and down. The bottom end of the graphite plug rod 13 seals along the liquid discharge port. In this embodiment, preferably, inside the main housing 2, a motor cavity for sealingly installing the driving servo motor 15 is arranged, and the connection between the motor cavity and the melting cavity 4 is sealingly connected; by driving the driving servo motor 15 to drive the transmission rod 14 to swing, the graphite plug rod 13 is moved away from the liquid discharge port, so as to smoothly discharge the molten metal into the casting cavity 7.

[0025] In this embodiment, preferably, a handle 11 is provided on the outer surface of the casting cavity 7, and a cooling system is also provided on the casting cavity 7. The cooling system includes a water inlet and a water outlet provided on the outer side surface of the casting cavity 7, and a hollow cooling cavity communicating with the water inlet and the water outlet is provided inside the casting cavity 7, which can play a role in cooling and can be quickly shaped by cooling after casting. In this embodiment, preferably, the PLC control box 3 includes a display screen for displaying operation parameters to facilitate the display of operation information, a PLC controller for controlling the equipment, a storage module for recording working parameters for storing processing parameters of various jewelry, and an operation button for starting the equipment, which can realize automatic control.

[0026] The metal raw material is manually moved the top cover 5 of the melting cavity, and the metal particles are put into the graphite crucible 20, and then the top cover 5 of the melting cavity is closed. Set the PLC parameter control, click to start the automatic process, and the electromagnetic heating coil 22 is started to heat the graphite crucible 20. Check the state of the molten metal through the viewing window 6 of the melting cavity cover. When the temperature reaches, the temperature sensor will automatically emit an alarm sound, the closing cylinder 9 will close, and the casting cavity 7 will be in the lowered and open state. Move the casting cavity 7 away through the handle 11, clamp the high-temperature baked product mold 16, put it into the mold protection sleeve 17 for fixing, reset the casting cavity 7, close the casting cavity 7 and the melting cavity 4 through the closing cylinder 9, start the PLC control system, lift and open the graphite plug 13, pour the molten metal into the product mold 16, and through the cooling system, wait for 2 minutes for the metal to solidify to complete the casting product. The closing cylinder 9 is started to be in the lowered state, the operating handle 11 is moved away, the lifting cylinder 18 jacks up the mold protection sleeve 17, and the product mold 16 can be clamped out.

[0027] Although the embodiments of the present invention have been shown and described, see the above detailed description. For those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fully automatic mold casting machine, comprising a base (1), characterized in that: A main housing (2) and a PLC control box (3) are fixedly arranged on the top of the base (1). A smelting cavity (4) is fixedly arranged on the main housing (2). The bottom of the smelting cavity (4) is connected to an independent casting cavity (7). A closing cylinder (9) is arranged at the bottom of the casting cavity (7). A pair of guide rods (10) are connected between the closing cylinder (9) and the smelting cavity (4), and the closing cylinder (9) is fixedly connected to the guide rods (10). The casting cavity (7) is rotatably installed on one of the guide rods (10) through a connecting sleeve (8). The casting cavity (7) can be mutually closed and communicated with or separated from the smelting cavity (4) through the lifting movement of the closing cylinder (9). An openable smelting cavity top cover (5) is arranged at the top of the smelting cavity (4). A graphite crucible (20) for smelting metal is arranged in the smelting cavity (4). A liquid discharge port is arranged at the bottom end of the graphite crucible (20). A quartz protective sleeve (21) is sleeved outside the graphite crucible (20). A heating mechanism with temperature induction is arranged outside the quartz protective sleeve (21). A plunger sealing mechanism for controlling the liquid discharge port is also arranged in the smelting cavity (4). A product mold (16) aligned with the liquid discharge port is arranged in the casting cavity (7). A mold protective sleeve (17) is sleeved outside the product mold (16). A lifting cylinder (18) for lifting the mold protective sleeve (17) and the product mold (16) is arranged at the inner bottom end of the casting cavity (7).

2. The fully automatic die casting machine according to claim 1, wherein: The heating mechanism with temperature induction includes an electromagnetic heating coil (22) sleeved outside the quartz protective sleeve (21). The upper and lower ends of the electromagnetic heating coil (22) are respectively fixed to the inner side of the smelting cavity (4) through an upper fixing ring (23) and a lower fixing ring (24). A temperature detection sensor is also arranged in the smelting cavity (4).

3. The full-automatic die casting machine according to claim 1, characterized in that: One end of the smelting cavity top cover (5) is rotatably sleeved on one of the guide rods (10). The other end of the smelting cavity top cover (5) is snap-connected to the other guide rod (10). A smelting cavity cover viewing window (6) is arranged on the smelting cavity top cover (5).

4. The full-automatic die casting machine according to claim 1, characterized in that: A product viewing window (12) for observing the inside of the smelting cavity (4) is arranged outside the smelting cavity (4). A closing and sealing structure (19) for sealing is arranged at the connection between the smelting cavity (4) and the casting cavity (7).

5. The full-automatic die casting machine according to claim 1, characterized in that: The plunger sealing mechanism includes a graphite plug rod (13) movably located in the graphite crucible (20), a transmission rod (14) installed at the top end of the graphite plug rod (13), and a driving servo motor (15) installed inside the main housing (2). The output end of the driving servo motor (15) is connected to one end of the transmission rod (14), and the driving servo motor (15) drives the transmission rod (14) to swing up and down. The bottom end of the graphite plug rod (13) seals along the liquid discharge port.

6. The fully automatic die casting machine according to claim 5, wherein: A motor cavity for sealing and installing the driving servo motor (15) is arranged inside the main housing (2), and the communication part between the motor cavity and the smelting cavity (4) is sealedly connected.

7. A fully automatic die casting machine according to claim 1, characterized in that: A handle (11) is provided on the outer surface of the casting cavity (7). A cooling system is also provided on the casting cavity (7). The cooling system includes a water inlet and a water outlet provided on the outer side surface of the casting cavity (7), and a hollow cooling cavity communicating with the water inlet and the water outlet is provided in the casting cavity (7).

8. The full-automatic die-casting machine according to claim 1, characterized in that: The PLC control box (3) includes a display screen for displaying operation parameters, a PLC controller for controlling the equipment, a storage module for recording working parameters, and an operation button for starting the equipment.

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