Injection chamber heating device of die-casting machine

Abstract

The utility model relates to the technical field of die-casting machines, in particular to a die-casting machine injection chamber heating device. Comprising an electric heating wire A; the combined covers A are provided with hollow cavities A for accommodating the electric heating wires A, and the two combined covers A are symmetrically arranged and combined into a barrel; an electric heating wire B; the combined covers B are provided with hollow cavities B for accommodating the electric heating wires B, and the two combined covers B are symmetrically arranged and combined into a circular tube; the piston column is in clearance fit with the interior of the cylinder; the insertion rod is fixed on the piston column and is in clearance fit with the inner side of the circular tube; the power assembly is mounted on the cylinder body and is used for driving the piston column to move; and the feeding pipe is communicated with the mold. By means of the mode that temperature is raised in advance, the barrel can be prevented from absorbing heat of pouring liquid, excess materials on a product can be reduced through the arranged insertion rod, the production quality of the product is guaranteed, the disassembly and assembly structure is simple, the excess materials in the barrel can be conveniently cleaned, and practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of die-casting machines, in particular to a heating device for an injection chamber of a die-casting machine. Background Art

[0002] The die-casting products of light alloys are made by injecting molten metal into the mold cavity at high speed and high pressure, filling and casting, and crystallizing and solidifying under high pressure. The whole injection process is divided into three main processes: low speed, high speed, and pressurization. At present, the material used for the injection chamber is SKD61, and the thermal conductivity of the material is 20W / mk. Therefore, the injection chamber will cause the temperature loss (decrease) of the molten metal liquid, which affects the temperature of the molten metal liquid, causing part of the molten metal to solidify first. These solids are filled into the mold cavity with the solution and solidified, which will lead to casting defects such as decreased mechanical properties, poor air tightness, and peeling.

[0003] A Chinese patent with authorization announcement number CN202490920U discloses a heating device for a die-casting machine shot chamber, including an shot chamber arranged in a fixed mold plate of the die-casting machine, and a gate sleeve arranged in a fixed outer mold and a fixed inner mold of the mold, a first heating sleeve is arranged around the outer periphery of the gate sleeve, and a second heating sleeve is arranged around the outer periphery of the shot chamber.

[0004] The above-mentioned patent still has the following technical defects: when too little molten metal is poured in, the product will have bubbles or gaps due to insufficient raw materials; when too much molten metal is poured in, there will be excess material on the product, which needs to be cut and collected later, which is cumbersome. Utility Model Content

[0005] The utility model aims to solve the problems existing in the background technology and proposes a heating device for the injection chamber of a die-casting machine.

[0006] The technical solution of the utility model is a heating device for the injection chamber of a die-casting machine, comprising: an electric heating wire A; a combination cover A with a hollow cavity A for accommodating the electric heating wire A, two combination covers A are symmetrically arranged and combined into a cylinder; an electric heating wire B; a combination cover B with a hollow cavity B for accommodating the electric heating wire B, two combination covers B are symmetrically arranged and combined into a round tube; a piston column matched with the internal clearance of the cylinder and an insertion rod fixed on the piston column and matched with the inner clearance of the round tube; a power component installed on the cylinder and used for driving the piston column to move; a feed pipe connected to the mold, and a detachable connection between the feed pipe and the round tube is achieved through a locking component.

[0007] Preferably, it also includes a connecting pipe connected to the cylinder, a vertical pipe connected to the connecting pipe and a heating box connected to the vertical pipe, an elastic reset mechanism A, and a piston plate movably arranged inside the connecting pipe and connected to the connecting pipe through the elastic reset mechanism A.

[0008] Preferably, the elastic reset mechanism A comprises a guide rod A which movably passes through the end of the connecting pipe and whose two ends are respectively connected to the piston plate and a limit block arranged on the outside of the cylinder, and a spring A which is sleeved on the guide rod A.

[0009] Preferably, the locking connection assembly includes an n-shaped block and a locking block respectively fixedly connected to the round tube and the feed tube, and an elastic reset mechanism B, through which a rectangular frame is slidably installed on the n-shaped block; the elastic reset mechanism B includes a guide rod B fixed on the inner side of the n-shaped block and a spring B sleeved on the guide rod B, and a connecting slider slidably installed on the guide rod B is fixedly connected to the rectangular frame.

[0010] Preferably, the upper combined cover A and the combined cover B are provided with sealing strips arranged along their circumferences, and the lower combined cover A and the combined cover B are provided with matching grooves matching with the sealing strips.

[0011] Preferably, the power assembly includes a threaded sleeve fixedly connected to the piston column, a threaded rod threadedly connected to the threaded sleeve, and a servo motor for driving the threaded rod to rotate.

[0012] Preferably, the mold consists of an upper mold and a lower mold.

[0013] Compared with the prior art, the utility model has the following beneficial technical effects: the casting liquid enters the interior of the cylinder through the feed pipe on the cylinder, and the power assembly is set to drive the piston column to move to one side of the mold, so that the casting liquid is squeezed into the mold through the round tube and the feed pipe. When the piston column moves to the limited position, the end of the insertion rod just extends into the inner end of the feed pipe, thereby reducing the residual material generated after the product is solidified and formed, and the cylinder and the round tube are respectively installed with electric heating wire A and electric heating wire B, so that the cylinder and the round tube can be preheated to prevent the cylinder from absorbing the heat of the casting liquid, and the cylinder and the round tube are detachable structures, so that the operator can easily clean the inside of the cylinder; in summary, the utility model can prevent the cylinder from absorbing the heat of the casting liquid by heating in advance, and the insertion rod is set to reduce the residual material on the product and ensure the production quality of the product, and its disassembly and assembly structure is simple, which is convenient for cleaning the residual material inside the cylinder, and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure 2-Figure 4 All of them are structural schematic diagrams of the cylinder in the utility model.

[0016] Figure 5 It is a cross-sectional structural diagram of the vertical pipe and the connecting pipe in the utility model.

[0017] Figure 6 for Figure 2 Schematic diagram of the local enlarged structure at A.

[0018] Figure 7 for Figure 4 Schematic diagram of the local enlarged structure at point B.

[0019] 1. Assembly hood A; 2. Combination hood A; 3. Hollow cavity A; 4. Fitting groove; 5. Piston column; 6. Upper mold; 7. Lower mold; 8. Servo motor; 9. Threaded rod; 10. Threaded sleeve; 11. Insert rod; 12. Sealing strip; 13. Electric heating wire A; 14. Assembly hood B; 15. N-shaped block; 16. Locking block; 17. Rectangular frame; 18. Connecting slider; 19. Guide rod B; 20. Spring B; 21. Electric heating wire B; 22. Limiting block; 23. Piston plate. DETAILED DESCRIPTION

[0020] Embodiment 1

[0021] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, a heating device for the injection chamber of a die-casting machine proposed in this embodiment includes: an electric heating wire A7; a combination cover A101 with a hollow cavity A1001 for accommodating the electric heating wire A7, two combination covers A are symmetrically arranged and combined into a cylinder; an electric heating wire B21; a combination cover B81 with a hollow cavity B8101 for accommodating the electric heating wire B21, two combination covers B are symmetrically arranged and combined into a round tube; a piston column 2 that matches the internal clearance of the cylinder and an insertion rod 5 that is fixed on the piston column 2 and matches the inner clearance of the round tube; a power assembly installed on the cylinder and used to drive the piston column 2 to move, the power assembly includes a threaded sleeve 43 fixedly connected to the piston column 2, a threaded rod 42 threadedly connected to the threaded sleeve 43, and a servo motor 41 for driving the threaded rod 42 to rotate; a feed pipe 12 connected to the mold, the mold consists of an upper mold 301 and a lower mold 302, and the feed pipe 12 and the round tube are detachably connected through a locking assembly.

[0022] The locking connection assembly includes an n-shaped block 15 and a locking block 16 fixedly connected to the round tube and the feed tube 12 respectively, and an elastic reset mechanism B, through which a rectangular frame 17 is slidably installed on the n-shaped block 15; the elastic reset mechanism B includes a guide rod B19 fixed on the inner side of the n-shaped block 15 and a spring B20 sleeved on the guide rod B19, and a connecting slider 18 slidably installed on the guide rod B19 is fixedly connected to the rectangular frame 17; the rectangular frame 17 is pulled upward to a limited position to align the round tube with the feed tube 12, at which time the locking block 16 contacts the n-shaped block 15, and then the rectangular frame 17 is released, and the rectangular frame 17 is driven to move downward under the elastic force of the spring B20, thereby completing the limit connection work of the n-shaped block 15 and the locking block 16.

[0023] The upper combination cover A101 and the combination cover B81 are provided with sealing strips 6 arranged along their circumferences, and the lower combination cover A101 and the combination cover B81 are provided with matching grooves 1002 matching with the sealing strips 6. Through the arrangement of the above structure, the sealing performance between the two combination covers A101 can be increased.

[0024] In this embodiment, the casting liquid enters the interior of the cylinder through the feed pipe on the cylinder, and a power assembly is provided to drive the piston column 2 to move toward one side of the mold, thereby squeezing the casting liquid into the mold through the circular tube and the feed pipe 12. When the piston column 2 moves to a limited position, the end of the insertion rod 5 just extends into the inner end of the feed pipe 12, thereby reducing the residual material generated after the product is solidified and formed. Electric heating wire A7 and electric heating wire B21 are respectively installed inside the cylinder and the circular tube, thereby realizing preheating of the cylinder and the circular tube to prevent the cylinder from absorbing the heat of the casting liquid. The cylinder and the circular tube are detachable structures, so that the operator can easily clean the inside of the cylinder.

[0025] Embodiment 2

[0026] like Figure 1 and Figure 5 As shown, a heating device for the injection chamber of a die-casting machine proposed in this embodiment, compared with the first embodiment, in this embodiment, further includes a connecting pipe 11 connected to the cylinder, a vertical pipe 10 connected to the connecting pipe 11 and a heating box 9 connected to the vertical pipe 10, an elastic reset mechanism A, and a piston plate 23 movably arranged inside the connecting pipe 11 and connected to the connecting pipe 11 through the elastic reset mechanism A.

[0027] The elastic reset mechanism A comprises a guide rod A14 which movably passes through the end of the connecting pipe 11 and whose two ends are respectively connected to the piston plate 23 and the limit block 22 arranged outside the cylinder body, and a spring A13 which is sleeved on the guide rod A14.

[0028] In this embodiment, when too little casting liquid is injected, there will be gaps in the product in the mold. When too much casting liquid is injected, a large amount of residual material will be produced. In order to ensure the production quality of the product, a sufficient amount of casting liquid is injected into the cylinder. When there is too much casting liquid, the pressure inside the cylinder increases and pushes the piston plate 23 to move, so that the casting liquid flows into the interior of the heating box 9 through the connecting pipe 11 and the vertical pipe 10.

[0029] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A heating device for a die casting machine injection chamber, characterized in that: include: Electric heating wire A (7); A combined cover A (101) is provided with a hollow cavity A (1001) for accommodating an electric heating wire A (7), and two combined covers A are symmetrically arranged and combined into a cylinder; Electric heating wire B (21); A combined cover B (81) is provided with a hollow cavity B (8101) for accommodating an electric heating wire B (21), and two combined covers B are symmetrically arranged and combined into a circular tube; A piston column (2) which is in clearance with the inside of the cylinder and an insertion rod (5) which is fixed on the piston column (2) and in clearance with the inside of the cylinder; A power assembly mounted on the cylinder and used to drive the piston rod (2) to move; A feed pipe (12) is connected to the mold, and a detachable connection is achieved between the feed pipe (12) and the round tube via a locking assembly.

2. A heating device for a die casting machine injection chamber according to claim 1, characterized in that: It also includes a connecting pipe (11) connected to the cylinder, a vertical pipe (10) connected to the connecting pipe (11), and a heating box (9) connected to the vertical pipe (10), an elastic reset mechanism A, and a piston plate (23) movably arranged inside the connecting pipe (11) and connected to the connecting pipe (11) via the elastic reset mechanism A.

3. A heating device for a die casting machine injection chamber according to claim 2, characterized in that: The elastic reset mechanism A comprises a guide rod A (14) which movably passes through the end of the connecting pipe (11) and whose two ends are respectively connected to the piston plate (23) and a limit block (22) arranged outside the cylinder body, and a spring A (13) which is sleeved and mounted on the guide rod A (14).

4. The heating device for the injection chamber of a die casting machine according to claim 1, characterized in that: The locking connection assembly comprises an n-shaped block (15) and a locking block (16) respectively fixedly connected to a round tube and a feed tube (12), and an elastic reset mechanism B, through which a rectangular frame (17) is slidably mounted on the n-shaped block (15); the elastic reset mechanism B comprises a guide rod B (19) fixed to the inner side of the n-shaped block (15) and a spring B (20) sleeved on the guide rod B (19); and a connecting slider (18) slidably mounted on the guide rod B (19) is fixedly connected to the rectangular frame (17).

5. The heating device for the injection chamber of a die casting machine according to claim 1, characterized in that: The upper combined cover A (101) and the combined cover B (81) are provided with sealing strips (6) arranged along their circumferences, and the lower combined cover A (101) and the combined cover B (81) are provided with matching grooves (1002) matching with the sealing strips (6).

6. The heating device for the injection chamber of a die casting machine according to claim 1, characterized in that: The power assembly comprises a threaded sleeve (43) fixedly connected to the piston column (2), a threaded rod (42) threadedly connected to the threaded sleeve (43), and a servo motor (41) for driving the threaded rod (42) to rotate.

7. The heating device for the injection chamber of a die casting machine according to claim 1, characterized in that: The mold consists of an upper mold (301) and a lower mold (302).

Images