Improved secondary extrusion oil cylinder

Abstract

The utility model discloses an improved secondary extrusion oil cylinder which comprises a secondary extrusion oil cylinder and a die frame, an oil cylinder seat is arranged at the lower end of the secondary extrusion oil cylinder and comprises a first seat and a second seat, and the left end of the second seat is fixedly connected with the die frame. The output end of the secondary extrusion oil cylinder penetrates through the oil cylinder base to be slidably connected with an oil cylinder piston rod sliding base, the lower end of the oil cylinder piston rod sliding base is fixedly connected with an extrusion column, a mold and a connecting pipe are arranged on the mold frame, the connecting pipe is located on the left side of the mold, and an injection molding pipe is fixedly connected between the connecting pipe and the mold. Positioning blocks are fixedly connected between the upper mold and the lower mold, and a casting mold is arranged between the positioning blocks on the two sides. By means of the structure, the problems that due to the fact that the number of casting structures is large, the material level thickness of a product is not uniform, pressure cannot break through the thin wall position in the casting process, the pressure cannot be normally transmitted to the thick position, and consequently the defects of product casting looseness, internal shrinkage cracks and the like are caused are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile accessory equipment improvement, in particular to an improved secondary extrusion oil cylinder. Background Art

[0002] Extrusion cylinder is a device that converts hydraulic energy into mechanical energy and is widely used in die casting, extrusion and other processes in industrial production. In the production process of automotive parts, especially in the manufacture of aluminum alloy precision die castings, the extrusion cylinder is used to control the quality of the parts, reduce pores and shrinkage defects, and improve the density and qualified rate of parts.

[0003] When existing extrusion cylinders are used to cast automotive parts, the thickness of the product is uneven due to the multiple casting structures, resulting in the inability of casting pressure to break through the thin-walled parts, and the pressure cannot be normally transmitted to the thick parts, thus causing defects such as loose casting and internal shrinkage cracks in the product.

[0004] Therefore, an improved secondary extrusion cylinder is proposed. By using an additional extrusion cylinder, the pressure at the far end of the product is difficult to be transmitted to the position, and the aluminum liquid that fills the cavity is used for secondary back pressure to ensure that there is enough pressure for extrusion when the metal cools and shrinks. In this way, the density of the shrinking position is guaranteed. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model provides an improved secondary extrusion cylinder, which solves the problem that the product material level thickness is uneven due to the multiple casting structures, resulting in the inability of casting pressure to break through the thin-walled position, resulting in the inability to normally transmit the pressure to the thick position, thus causing defects such as loose casting and internal shrinkage cracks in the product.

[0006] The utility model also provides the above-mentioned improved secondary extrusion oil cylinder, comprising: a secondary extrusion oil cylinder and a mold frame, a cylinder seat is provided at the lower end of the secondary extrusion oil cylinder, the cylinder seat comprises a first seat and a second seat, the first seat is fixedly connected to the secondary extrusion oil cylinder located on both sides of the output end of the secondary extrusion oil cylinder, the first seat is fixedly connected to the second seat by bolts, the left end of the second seat is fixedly connected to the mold frame, the output end of the secondary extrusion oil cylinder is slidably connected to a cylinder piston rod slide seat through the cylinder seat, the lower end of the cylinder piston rod slide seat is fixedly connected to an extrusion column, a mold and a connecting pipe are provided on the mold frame, the connecting pipe is located on the left side of the mold, and an injection molding pipe is fixedly connected to the mold, the mold comprises an upper mold and a lower mold, the lower mold is fixedly connected in the mold frame, a positioning block is fixedly connected between the upper mold and the lower mold, and a casting mold is provided between the positioning blocks on both sides.

[0007] According to the improved secondary extrusion oil cylinder, the output end of the secondary extrusion oil cylinder is fixedly connected with a clamping block, and the end of the cylinder piston rod slide close to the secondary extrusion oil cylinder is provided with a clamping groove, and the clamping block is slidably connected to the clamping groove and adapted to the clamping groove.

[0008] According to the improved secondary extrusion cylinder, a primary extrusion cylinder is installed on the upper end of the connecting pipe.

[0009] According to the improved secondary extrusion cylinder, there are two casting molds, which are arranged parallel to each other.

[0010] According to the improved secondary extrusion oil cylinder, limit blocks are provided on both sides of the oil cylinder piston rod slide seat, and are slidably connected to the mold frame through the limit blocks.

[0011] The utility model has the following beneficial effects:

[0012] In the utility model, a secondary extrusion oil cylinder and an extrusion rod are arranged at the other end of the casting mold. After the completion of the first extrusion, the aluminum liquid has not yet reached a completely solidified state, and the secondary extrusion oil cylinder is used to perform secondary pressurization. When the far end of the casting is not compensated for shrinkage, the excess liquid is used to perform pressurization on the far end of the product, and finally the shrinkage of the product that is not shrunk or not in place due to uneven structure can be compensated, so that the casting can obtain better density.

[0013] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0015] Figure 1 This is a structural diagram of an improved secondary extrusion cylinder of the utility model;

[0016] Figure 2 This is an internal structure diagram of an improved secondary extrusion cylinder of the utility model;

[0017] Figure 3 for Figure 2 A magnified view of the structure at center A;

[0018] Figure 4 for Figure 2 A magnified view of the structure at point B.

[0019] Legend:

[0020] 1. Secondary extrusion cylinder; 11. Clamping block; 2. Cylinder seat; 21. First seat; 22. Second seat; 3. Sliding seat; 31. Slot; 4. Mold frame; 5. Mold; 51. Upper mold; 52. Lower mold; 6. Connecting pipe; 7. Casting mold; 71. Positioning block; 8. Extrusion column; 9. Injection tube. DETAILED DESCRIPTION

[0021] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0022] Reference Figure 1-4 The utility model embodiment is an improved secondary extrusion oil cylinder, which includes a secondary extrusion oil cylinder 1 and a mold frame 4. The lower end of the secondary extrusion oil cylinder 1 is provided with a cylinder seat 2, and the cylinder seat 2 includes a first seat 21 and a second seat 22. The first seat 21 is fixedly connected to the secondary extrusion oil cylinder 1 on both sides of the output end of the secondary extrusion oil cylinder 1. The first seat 21 is square and larger than the cross-sectional area of ​​the secondary extrusion oil cylinder 1. The first seat 21 is fixedly connected to the second seat 22 by bolts. There are two second seats 22, which are arranged parallel to each other. The left end of the second seat 22 is fixedly connected to the mold frame 4;

[0023] The output end of the secondary extrusion oil cylinder 1 passes through the oil cylinder seat 2 and is slidably connected to the oil cylinder piston rod slide 3. Limit blocks are provided on both sides of the oil cylinder piston rod slide 3, and the limit blocks are slidably connected to the mold frame 4. The output end of the secondary extrusion oil cylinder 1 is fixedly connected to the clamping block 11. The end of the oil cylinder piston rod slide 3 close to the secondary extrusion oil cylinder 1 is provided with a clamping groove 31. The clamping block 11 is slidably connected to the clamping groove 31 and is adapted to the clamping groove 31. The lower end of the oil cylinder piston rod slide 3 is fixedly connected to the extrusion column 8. There are two extrusion columns 8, which are arranged parallel to each other. The lower end of the extrusion column 8 is fixedly connected to the plug, and the incompletely solidified aluminum liquid is secondary pressurized by the plug. The mold frame 4 is provided with a mold 5 and a connection Tube 6, a primary extrusion cylinder is installed on the upper end of the connecting tube 6, the connecting tube 6 is located on the left side of the mold 5, and an injection tube 9 is fixedly connected to the mold 5, and the aluminum liquid is injected into the casting mold 7 through the injection tube 9, the mold 5 includes an upper mold 51 and a lower mold 52, the upper mold 51 is embedded in the lower mold 52, and the lower mold 52 is fixedly connected in the mold frame 4, under the action of the upper mold 51 and the lower mold 52, burns are avoided during casting, a positioning block 71 is fixedly connected between the upper mold 51 and the lower mold 52, and the casting mold 7 is positioned by the positioning block 71, and a casting mold 7 is arranged between the positioning blocks 71 on both sides, and there are two casting molds 7, which are arranged parallel to each other.

[0024] Working principle: When in use, the aluminum liquid is injected into the casting mold 7, and then it is squeezed by the primary extrusion cylinder. After the extrusion is completed, the aluminum liquid has not yet reached a completely solidified state, and the secondary extrusion cylinder 1 is started for secondary pressurization. When the far end of the casting is not compensated for shrinkage, the excess liquid is used to pressurize the far end of the product, and finally the shrinkage of the product can be compensated due to uneven structure, so that the casting can have better density; after the casting is completed, the upper mold 51 can be removed and taken out, which is convenient to operate.

[0025] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. An improved secondary extrusion cylinder, characterized in that: include: A secondary extrusion oil cylinder (1) and a mold frame (4); a cylinder seat (2) is provided at the lower end of the secondary extrusion oil cylinder (1); the cylinder seat (2) comprises a first seat (21) and a second seat (22); the first seat (21) is fixedly connected to the secondary extrusion oil cylinder (1) on both sides of the output end of the secondary extrusion oil cylinder (1); the first seat (21) is fixedly connected to the second seat (22) by bolts; the left end of the second seat (22) is fixedly connected to the mold frame (4); the output end of the secondary extrusion oil cylinder (1) passes through the cylinder seat (2) and is slidably connected to a cylinder piston rod slide The bottom end of the oil cylinder piston rod slide seat (3) is fixedly connected to an extrusion column (8); a mold (5) and a connecting pipe (6) are provided on the mold frame (4); the connecting pipe (6) is located on the left side of the mold (5) and an injection tube (9) is fixedly connected to the mold (5); the mold (5) comprises an upper mold (51) and a lower mold (52); the lower mold (52) is fixedly connected to the mold frame (4); a positioning block (71) is fixedly connected between the upper mold (51) and the lower mold (52); a casting mold (7) is provided between the positioning blocks (71) on both sides.

2. The improved secondary extrusion cylinder according to claim 1, characterized in that: The output end of the secondary extrusion oil cylinder (1) is fixedly connected with a clamping block (11); an end of the oil cylinder piston rod slide seat (3) close to the secondary extrusion oil cylinder (1) is provided with a clamping groove (31); the clamping block (11) is slidably connected with the clamping groove (31) and is adapted to fit the clamping groove (31).

3. The improved secondary extrusion cylinder according to claim 2, characterized in that: A primary extrusion cylinder is installed at the upper end of the connecting pipe (6).

4. The improved secondary extrusion cylinder according to claim 3, characterized in that: There are two casting molds (7) which are arranged parallel to each other.

5. The improved secondary extrusion cylinder according to claim 4, characterized in that: Limit blocks are provided on both sides of the oil cylinder piston rod slide seat (3), and are slidably connected to the mold frame (4) via the limit blocks.

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