Die casting machine cylinder and production process thereof

Abstract

The application belongs to the technical field of die casting machine manufacturing, and particularly relates to a die casting machine cylinder and a production process thereof. The application provides a die casting machine cylinder which comprises a cylinder body, a hole is formed in the middle of the cylinder body, a feeding opening is formed in one side of the cylinder body, the hole is in a hollow cylindrical shape, the hole and the feeding opening are in communication, and the hole is used for containing metal liquid poured from the feeding opening. The application further provides a production process of the die casting machine cylinder. The hole is coarsely ground and finely ground through a hole grinding device, the grinding precision and efficiency are improved, and the product quality is improved.

Description

Technical Field

[0001] This invention relates to the field of die-casting machine manufacturing technology, and more specifically to a die-casting machine cylinder and its manufacturing process. Background Technology

[0002] The barrel is a high-frequency working component in a die-casting machine. Its structure generally consists of a cylindrical inner hole and a feed inlet connected to the inner hole. During the manufacturing process of the barrel, the inner hole needs to be ground to make the inner wall of the barrel smooth and meet the usage requirements.

[0003] Currently, grinding the inner hole of the barrel usually involves inserting a grinding tool into the inner hole of the barrel. This method results in poor grinding effect and incomplete grinding, which affects the machining accuracy of the inner hole of the barrel. Furthermore, it usually requires manual operation, which affects the processing efficiency. Summary of the Invention

[0004] One of the objectives of this invention is to address the shortcomings of existing technologies by providing a die-casting machine barrel.

[0005] The technical solution of the present invention is as follows:

[0006] A die-casting machine barrel includes a barrel body with an inner hole in the middle and a feed inlet on one side. The inner hole is a hollow cylinder and is connected to the feed inlet. The inner hole is used to hold molten metal poured in from the feed inlet.

[0007] Another design objective of this invention is to provide a manufacturing process for a die-casting machine barrel, the technical solution of which is as follows:

[0008] Step 1: Drilling. Drill a hole in the middle of the barrel body to obtain an inner hole;

[0009] Step 2: Inner hole grinding. Install the barrel body on the worktable and fix it with a fixing bracket. Then, use an inner hole grinding machine to grind the inner hole from Step 1.

[0010] Step 3: Milling a hole. A square hole is made on one side of the barrel body to obtain the feed inlet.

[0011] Step 4: Nitriding. The outer surface of the barrel body and the inner wall of the inner hole are nitrided to obtain the product.

[0012] As a preferred embodiment, the internal hole grinding equipment in step two includes a slide rail disposed on the worktable, a drive assembly disposed on the worktable, a grinding assembly slidably disposed on the slide rail, an expansion assembly disposed within the grinding assembly, and an air blowing assembly disposed on the worktable.

[0013] As a preferred embodiment, the drive assembly includes a first motor fixedly mounted on the workbench, a one-way lead screw driven by the first motor, and a first nut threaded onto the one-way lead screw.

[0014] As a preferred embodiment, the grinding assembly includes a slide fixedly mounted on the top of the first nut, a second motor fixedly mounted on the slide, a rotating shaft fixedly connected to the output shaft of the second motor, and a cutter head fixedly mounted at the end of the rotating shaft. Both the rotating shaft and the cutter head are hollow structures, and the slide is slidably mounted on the slide rail.

[0015] As a preferred embodiment, the expansion assembly includes a bidirectional lead screw rotatably disposed within the cutter head, a second nut threaded onto the bidirectional lead screw, a third nut threaded onto the bidirectional lead screw, a plurality of first connecting plates rotatably disposed on the second nut, a plurality of second connecting plates rotatably disposed on the third nut, a plurality of fixing rods slidably disposed on the inner wall of the cutter head, a fixing seat fixedly disposed at the bottom of the fixing rod, and a grinding head fixedly disposed at the top of the fixing rod. The other ends of the first connecting plates and the second connecting plates are both rotatably disposed at the bottom of the fixing seat, and the second nut and the third nut are symmetrically disposed on the left and right sides of the bidirectional lead screw.

[0016] As a preferred embodiment, the air blowing assembly includes an air cylinder fixedly mounted on the worktable, a piston slidably mounted inside the air cylinder, a first slide rod fixedly mounted on the piston, a second slide rod slidably mounted on the first slide rod, a fixed sleeve fixedly mounted on the slide block, a fixed plate fixedly connected between the fixed sleeve and the second slide rod, and an air pipe fixedly connected between the air cylinder and the fixed plate. The air pipe is a telescopic structure, and the rotating shaft is rotatably mounted inside the fixed plate. The interior of the fixed plate is connected to the interior of the rotating shaft.

[0017] As a preferred embodiment, a connecting post is rotatably provided on the side of the cutter head near the fixed frame, a first annular plate is fixedly provided on the connecting post, the connecting post is fixedly connected to one end of the bidirectional lead screw, and a first friction layer is fixedly provided on the first annular plate.

[0018] As a preferred embodiment, a support rod is fixedly provided on one side of the fixed base, a second annular plate is fixedly provided on the support rod, and a second friction layer is fixedly provided on the second annular plate, with the first friction layer and the second friction layer cooperating with each other.

[0019] As another preferred embodiment, the rotating shaft has several air holes on the side near the cutter head, and the air holes are connected to the interior of the rotating shaft.

[0020] The beneficial effects of this invention are as follows:

[0021] This invention includes a drive assembly and a grinding assembly. A first motor drives a unidirectional lead screw to rotate, thereby causing the slide to reciprocate on the slide rail. A second motor drives a rotating shaft to rotate, so that the rotating shaft and the cutter head rotate and move in a linear motion to extend into the inner hole for grinding, resulting in high grinding efficiency.

[0022] This invention comprises an expansion assembly, a first friction layer, and a second friction layer. When the cutting head rotates into the inner hole, the grinding head first performs rough grinding on the inner hole. When the first and second friction layers come into contact and generate relative motion, the first annular plate and the bidirectional lead screw rotate. As the bidirectional lead screw rotates, the second and third nuts move closer to each other, thereby causing the fixed seat to drive the fixed rod and the grinding head to move outward from the cutting head. After the grinding head expands, it closely adheres to the inner wall of the inner hole to perform fine grinding, improving the accuracy of the inner hole grinding. Furthermore, through the cooperation of the first and second friction layers, there is no need for manual adjustment of the grinding head's grinding position, thus improving grinding efficiency.

[0023] The present invention is also provided with an air blowing assembly and an air blowing hole. During the grinding process of the grinding head grinding the inner hole, the piston, the first slide rod and the second slide rod move with the fixed sleeve, so that the piston compresses the air in the air cylinder into the air pipe and enters the rotating shaft. The air is then blown out from the air blowing hole, blowing off the grinding debris adhering to the inner wall of the inner hole, which facilitates the cleaning of the inner hole.

[0024] In summary, this invention has the advantages of high grinding efficiency and high grinding precision, and is suitable for the field of die-casting machine manufacturing technology. Attached Figure Description

[0025] The invention will be further described below with reference to the accompanying drawings:

[0026] Figure 1 This is a schematic diagram of the internal hole grinding equipment;

[0027] Figure 2 This is a structural schematic diagram of the expansion support component;

[0028] Figure 3 This is a schematic diagram of the air blowing assembly;

[0029] Figure 4 A schematic diagram showing the state of the grinding head during grinding;

[0030] Figure 5 A schematic diagram showing the state of the grinding head during expansion;

[0031] Figure 6 This is a schematic diagram of the material cylinder of the die-casting machine;

[0032] Figure 7 This is a production process flow diagram of the die-casting machine's barrel.

[0033] Reference numerals: 1-Cylinder body; 11-Inner hole; 12-Inlet; 2-Worktable; 21-Fixed frame; 3-Inner hole grinding equipment; 31-Slide rail; 4-Drive assembly; 41-First motor; 42-One-way lead screw; 43-First nut; 5-Grinding assembly; 51-Slide block; 52-Second motor; 53-Rotating shaft; 54-Cutter head; 55-Air blowing hole; 6-Expansion assembly; 61-Two-way lead screw; 62-Second nut; 6 3-Third nut; 64-First connecting plate; 65-Second connecting plate; 66-Fixing rod; 67-Fixing seat; 68-Grinding head; 7-Blowing assembly; 71-Air cylinder; 72-Piston; 73-First slide rod; 74-Second slide rod; 75-Fixing sleeve; 76-Fixing plate; 77-Air pipe; 8-Connecting column; 81-First annular plate; 82-First friction layer; 9-Support rod; 91-Second annular plate; 92-Second friction layer. Detailed Implementation

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Example 1

[0035] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0036] like Figure 6 As shown, a die-casting machine barrel includes a barrel body 1, an inner hole 11 in the middle of the barrel body 1, and a feed inlet 12 on one side of the barrel body 1. The inner hole 11 is a hollow cylinder and is connected to the feed inlet 12. The inner hole 11 is used to hold the molten metal poured in from the feed inlet 12. When the barrel is in use, after the molten metal enters the inner hole 11 from the feed inlet 12, the die-casting machine punch pushes the molten metal from the outlet of the inner hole 11 to the next component, completing the injection. Example 2

[0037] like Figures 1 to 7 As shown, components that are the same as or corresponding to those in Embodiment 1 are referred to using the same reference numerals as those in Embodiment 1. For simplicity, only the differences from Embodiment 1 will be described below. The difference between Embodiment 2 and Embodiment 1 is as follows:

[0038] A manufacturing process for a die-casting machine barrel includes the following steps:

[0039] Step 1: Drilling. Drill a hole in the middle of the barrel body 1 to obtain an inner hole 11.

[0040] Step 2: Inner hole grinding. Install the barrel body 1 on the workbench 2 and fix it with the fixing bracket 21. Then grind the inner hole 11 in Step 1 with the inner hole grinding equipment 3.

[0041] Step 3: Milling a hole. A square hole is opened on one side of the barrel body 1 to obtain the feed inlet 12;

[0042] Step 4: Nitriding. Nitriding is performed on the outer surface of the barrel body 1 and the inner wall of the inner hole 11 to obtain the product. Nitriding can further improve the wear resistance and corrosion resistance of the inner hole 11.

[0043] like Figure 1 As shown, the internal hole grinding device 3 in step two includes a slide rail 31 on the worktable 2, a drive assembly 4 on the worktable 2, a grinding assembly 5 slidably mounted on the slide rail 31, an expansion assembly 6 mounted inside the grinding assembly 5, and an air blowing assembly 7 mounted on the worktable 2.

[0044] like Figure 1 As shown, the drive assembly 4 includes a first motor 41 fixedly mounted on the worktable 2, a one-way lead screw 42 driven by the first motor 41, and a first nut 43 threadedly connected to the one-way lead screw 42. In use, the first motor 41 is turned on to drive the one-way lead screw 42 to rotate, thereby driving the first nut 43 and the grinding assembly 5 to reciprocate.

[0045] like Figure 1 As shown, the grinding assembly 5 includes a slide 51 fixedly mounted on the top of the first nut 43, a second motor 52 fixedly mounted on the slide 51, a rotating shaft 53 fixedly connected to the output shaft of the second motor 52, and a cutter head 54 fixedly mounted on the end of the rotating shaft 53. Both the rotating shaft 53 and the cutter head 54 are hollow structures. The slide 51 is slidably mounted on the slide rail 31. In use, the second motor 52 is turned on to drive the rotating shaft 53 and the cutter head 54 to rotate. Under the drive of the drive assembly 4, the rotating shaft 53 and the cutter head 54 rotate and move linearly to extend into the inner hole 11 for grinding, resulting in high grinding efficiency.

[0046] like Figure 2As shown, the expansion assembly 6 includes a bidirectional lead screw 61 rotatably disposed within the cutter head 54, a second nut 62 threadedly connected to the bidirectional lead screw 61, a third nut 63 threadedly connected to the bidirectional lead screw 61, several first connecting plates 64 rotatably disposed on the second nut 62, several second connecting plates 65 rotatably disposed on the third nut 63, several fixing rods 66 slidably disposed on the inner wall of the cutter head 54, a fixing seat 67 fixedly disposed at the bottom of the fixing rods 66, and a grinding head 68 fixedly disposed at the top of the fixing rods 66. The other ends of the first connecting plates 64 and the second connecting plates 65 are rotatably disposed at the bottom of the fixing seat 67. The second nuts 62 and the third nuts 63 are symmetrically disposed on the left and right sides of the bidirectional lead screw 61. In use, when the cutter head 54 rotates into the inner hole 11, the grinding head 68... First, the inner hole 11 is rough ground. When the first friction layer 82 and the second friction layer 92 come into contact with each other and generate relative movement, the first annular plate 81 and the bidirectional lead screw 61 rotate. When the bidirectional lead screw 61 rotates, the second nut 62 and the third nut 63 move closer to each other, thereby causing the fixed seat 67 to drive the fixed rod 66 and the grinding head 68 to move outward of the cutter head 54. After the grinding head 68 expands, it closely adheres to the inner wall of the inner hole 11 to perform fine grinding on the inner hole 11. The grinding accuracy of the inner hole 11 is improved by rough grinding and fine grinding. When the grinding head 68 needs to be reset, the rotating shaft 53 changes the rotation direction and extends into the inner hole 11. When the first friction layer 82 and the second friction layer 92 come into contact with each other, the first annular plate 81 and the bidirectional lead screw 61 rotate, and the second nut 62 and the third nut 63 drive the grinding head 68 to reset.

[0047] like Figure 3 As shown, the air blowing assembly 7 includes an air cylinder 71 fixedly mounted on the workbench 2, a piston 72 slidably mounted inside the air cylinder 71, a first slide rod 73 fixedly mounted on the piston 72, a second slide rod 74 slidably mounted on the first slide rod 73, a fixed sleeve 75 fixedly mounted on the slide block 51, a fixed plate 76 fixedly connected between the fixed sleeve 75 and the second slide rod 74, and an air pipe 77 fixedly connected between the air cylinder 71 and the fixed plate 76. The air pipe 77 is a telescopic structure. The rotating shaft 53 is rotatably mounted inside the fixed plate 76, and the interior of the fixed plate 76 is connected to the interior of the rotating shaft 53. During use, due to... The damping between the first slide rod 73 and the second slide rod 74 is small. During the process of the grinding head 68 entering the end of the inner hole 11, the second slide rod 74 moves with the fixed sleeve 75 and slides on the first slide rod 73 first. After the grinding head 68 enters the inner hole 11 and during the grinding process, the second slide rod 74 drives the first slide rod 73 and the piston 72 to move towards the inner hole 11. The air tube 77 is stretched, so that the piston 72 compresses the air in the air cylinder 71 into the air tube 77 and enters the rotating shaft 53. The air is then blown out from the air blowing hole 55, blowing off the grinding debris adhering to the inner wall of the inner hole 11, which facilitates the cleaning of the inner hole.

[0048] like Figure 2 As shown, a connecting post 8 is rotatably provided on the side of the cutter head 54 near the fixed frame 21. A first annular plate 81 is fixedly provided on the connecting post 8. The connecting post 8 is fixedly connected to one end of the bidirectional lead screw 61. A first friction layer 82 is fixedly provided on the first annular plate 81.

[0049] like Figure 1 and Figure 3 As shown, a support rod 9 is fixedly installed on one side of the fixed base 21, a second annular plate 91 is fixedly installed on the support rod 9, and a second friction layer 92 is fixedly installed on the second annular plate 91. The first friction layer 82 and the second friction layer 92 cooperate with each other. By setting the first friction layer 82 and the second friction layer 92, the rotation of the bidirectional lead screw 61 can be realized without manual adjustment, making the operation more convenient and improving the grinding efficiency.

[0050] like Figure 2 As shown, the rotating shaft 53 has several air holes 55 on the side near the cutter head 54, and the air holes 55 are connected to the interior of the rotating shaft 53.

[0051] Work process

[0052] In use, first fix the barrel body 1 onto the fixing base 21 (fixing the barrel body 1 with the fixing bracket 21 is a mature existing technology and will not be described in detail here). Then, turn on the first motor 41 to drive the one-way lead screw 42 to rotate, thereby driving the first nut 43 and the grinding assembly 5 to move towards the barrel body 1. At the same time, turn on the second motor 52 to drive the rotating shaft 53 and the cutter head 54 to rotate. As the cutter head 54 drives the grinding head 68 to rotate and extend into the inner hole 11, the inner hole 11 is coarsely ground. At the same time, the piston 72, the first slide rod 73 and the second slide rod 74 move with the fixing sleeve 75, so that the piston 72 compresses the air in the air cylinder 71 to the air pipe 7. The air enters the rotating shaft 53 and is then blown out from the air blowing hole 55, blowing off the grinding debris adhering to the inner wall of the inner hole 11. When the grinding head 68 grinds to the outlet of the inner hole 11, the first friction layer 82 and the second friction layer 92 come into contact with each other and generate relative movement, causing the first annular plate 81 and the bidirectional lead screw 61 to rotate. When the bidirectional lead screw 61 rotates, the second nut 62 and the third nut 63 move closer to each other, thereby causing the fixed seat 67 to drive the fixed rod 66 and the grinding head 68 to move outward of the cutter head 54. After the grinding head 68 expands, it closely adheres to the inner wall of the inner hole 11 to perform fine grinding on the inner hole 11, thereby improving the accuracy and efficiency of grinding the inner hole 11.

[0053] In the description of this invention, it should be understood that the terms "front and back", "left and right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0054] Of course, those skilled in the art should understand that the term "a" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple. The term "a" should not be understood as a limitation on the quantity.

[0055] The above description, in conjunction with the accompanying drawings, represents only preferred embodiments of the present invention. However, the present invention is not limited to the above embodiments. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of the present invention. These modifications and improvements should also be considered within the scope of protection of the present invention and will not affect the effectiveness and practicality of the present invention.

Claims

1. A manufacturing process for a die-casting machine barrel, characterized in that: Includes a barrel body (1), the barrel body (1) has an inner hole (11) in the middle, and an inlet (12) is provided on one side of the barrel body (1). The inner hole (11) is a hollow cylinder, and the inner hole (11) and the inlet (12) are connected. The inner hole (11) is used to hold the molten metal poured in from the inlet (12). Step 1: Drilling. Drill a hole in the middle of the barrel body (1) to obtain an inner hole (11). Step 2: Inner hole grinding. Install the barrel body (1) on the workbench (2) and fix it with the fixing bracket (21). Then grind the inner hole (11) in Step 1 with the inner hole grinding equipment (3). Step 3: Milling hole. A square hole is opened on one side of the barrel body (1) to obtain the feed inlet (12). Step 4: Nitriding. The outer surface of the barrel body (1) and the inner wall of the inner hole (11) are nitrided to obtain the product. The internal hole grinding equipment (3) in step two includes a slide rail (31) on the worktable (2), a drive assembly (4) on the worktable (2), a grinding assembly (5) slidably disposed on the slide rail (31), an expansion assembly (6) disposed in the grinding assembly (5), and an air blowing assembly (7) disposed on the worktable (2). The drive assembly (4) includes a first motor (41) fixedly mounted on the workbench (2), a one-way lead screw (42) driven by the first motor (41), and a first nut (43) threadedly connected to the one-way lead screw (42). The grinding assembly (5) includes a slide (51) fixedly mounted on the top of the first nut (43), a second motor (52) fixedly mounted on the slide (51), a rotating shaft (53) fixedly connected to the output shaft of the second motor (52), and a cutter head (54) fixedly mounted on the end of the rotating shaft (53). The rotating shaft (53) and the cutter head (54) are both hollow structures. The slide (51) is slidably mounted on the slide rail (31). The expansion assembly (6) includes a bidirectional lead screw (61) rotatably disposed in the cutter head (54), a second nut (62) threadedly connected to the bidirectional lead screw (61), a third nut (63) threadedly connected to the bidirectional lead screw (61), a plurality of first connecting plates (64) rotatably disposed on the second nut (62), a plurality of second connecting plates (65) rotatably disposed on the third nut (63), a plurality of fixing rods (66) slidably disposed on the inner wall of the cutter head (54), a fixing seat (67) fixedly disposed at the bottom of the fixing rod (66), and a grinding head (68) fixedly disposed at the top of the fixing rod (66). The other ends of the first connecting plates (64) and the second connecting plates (65) are rotatably disposed at the bottom of the fixing seat (67). The second nut (62) and the third nut (63) are symmetrically disposed on the left and right sides of the bidirectional lead screw (61). The cutter head (54) is rotatably provided with a connecting post (8) on the side near the fixed frame (21). A first annular plate (81) is fixedly provided on the connecting post (8). The connecting post (8) is fixedly connected to one end of the bidirectional lead screw (61). A first friction layer (82) is fixedly provided on the first annular plate (81). A support rod (9) is fixedly installed on one side of the fixed frame (21), and a second annular plate (91) is fixedly installed on the support rod (9). A second friction layer (92) is fixedly installed on the second annular plate (91), and the first friction layer (82) and the second friction layer (92) cooperate with each other.

2. The production process of a die-casting machine cylinder according to claim 1, characterized in that: The air blowing assembly (7) includes an air cylinder (71) fixedly mounted on the workbench (2), a piston (72) slidably mounted inside the air cylinder (71), a first slide rod (73) fixedly mounted on the piston (72), a second slide rod (74) slidably mounted on the first slide rod (73), a fixed sleeve (75) fixedly mounted on the slide block (51), a fixed plate (76) fixedly connected between the fixed sleeve (75) and the second slide rod (74), and an air pipe (77) fixedly connected between the air cylinder (71) and the fixed plate (76). The air pipe (77) is a telescopic structure. The rotating shaft (53) is rotatably mounted inside the fixed plate (76). The interior of the fixed plate (76) is connected to the interior of the rotating shaft (53).

3. The production process of a die-casting machine cylinder according to claim 1, characterized in that: The rotating shaft (53) has several air holes (55) on the side near the cutter head (54), and the air holes (55) are connected to the interior of the rotating shaft (53).

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