Sprue bush of die-casting machine and production process of sprue bush

Abstract

The invention relates to the technical field of sprue bush machining, in particular to a die-casting machine sprue bush and a production process thereof.The die-casting machine sprue bush comprises a sprue bush body, a first servo motor is started to separate a moving frame, the sprue bush body is fixed, the interior is polished through a polishing rod and a third servo motor, and then the sprue bush body is fixed to rotate; and a synchronous gear and a third transmission screw are used for driving a grinding head to grind the outer surface, finally, a grinding rod is moved out, and the ground sprue bush is taken out. According to the device, through accurate control of the servo motor, key components such as the movable frame, the connecting plate and the grinding rod can be rapidly and accurately moved, so that the machining period is greatly shortened, meanwhile, manual intervention is reduced through automatic operation, the influence of human factors on the production efficiency is reduced, and the whole production process is smoother and more efficient.

Description

Technical Field

[0001] The invention relates to the technical field of gate sleeve processing, in particular to a gate sleeve for a die-casting machine and a production process thereof. Background Art

[0002] The sprue bushing is also called a nozzle, a pouring nozzle, or a sprue filling. It is a metal accessory. Its main function is to connect the molding mold with the injection molding machine and serve as a flow channel component for the molten plastic material to be injected from the nozzle of the injection molding machine into the mold. The processing sequence of the sprue bushing usually includes rough machining, semi-finishing machining, and finishing machining stages. Rough machining and semi-finishing machining are performed before heat treatment to remove a large amount of metal excess and partially complete the processing of shape and size. Finishing machining is performed after heat treatment to ensure that the required accuracy and surface roughness are achieved. In the production of gate sleeves, the inner and outer walls of the gate sleeves need to be polished when the gate sleeves are finely processed after being formed. Currently, the polishing work usually still relies on manual operation, which has low work efficiency, low grinding accuracy, and unstable grinding quality. When performing manual or mechanical polishing, different polishing equipment needs to be switched to achieve the polishing of the inner and outer walls of the gate sleeve, which is relatively troublesome and not only increases production costs, but also reduces production efficiency.

[0003] Therefore, those skilled in the art provide a die-casting machine sprue sleeve and a production process thereof to solve the problems raised in the above background technology. Summary of the invention

[0004] The object of the present invention is to provide a sprue sleeve for a die-casting machine and a production process thereof, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides a sprue bushing for a die-casting machine, comprising a sprue bushing main body.

[0006] The present invention also provides a production process of a die-casting machine sprue sleeve, comprising the following steps: First, start the first servo motor on the operating table, so that the first servo motor drives the first transmission screw to rotate, and the first transmission screw rotates to drive the movable frame to separate from the fixed frame, and the sprue bushing body to be processed is placed between the two fixing rings on the fixing plate, and the sprue bushing body is preliminarily fixed by the two fixing rings; The first servo motor is started again to insert the grinding rod on the connecting plate into the injection runner of the gate sleeve, and the third servo motor is started to drive the grinding rod to rotate to grind the inside of the gate sleeve body; After the inner part is polished, the first servo motor is started again to fix the connection frame and the sprue sleeve body, and the third servo motor is started to drive the sprue sleeve body to rotate, so that the second synchronous gear drives the first synchronous gear and the third transmission screw to rotate, and the third transmission screw drives the sliding frame and the polishing head to slide, and the outer surface of the sprue sleeve body is polished by the polishing head; After the grinding is completed, the first servo motor is started to drive the moving frame to move, so that the grinding rod is moved out of the sprue sleeve body, and the grinded sprue sleeve body can be taken out.

[0007] The production process of the die casting machine sprue sleeve in this application is realized by using the following related components, specifically: It comprises an operating table and a sprue sleeve main body, wherein a sprue sleeve injection flow channel for conveying raw materials is provided inside the sprue sleeve main body, a limiting component is installed on one end of the top of the operating table, an auxiliary moving component is slidably connected to the other end of the operating table, the sprue sleeve main body is placed between the limiting component and the auxiliary moving component, the limiting component comprises two fixing frames, the two fixing frames are respectively installed on both sides of the operating table, a first connecting frame is installed between the two fixing frames, a fixing plate is installed on one side of the first connecting frame, an auxiliary fixing component for fixing the sprue sleeve main body with an auxiliary limiting component is slidably provided above the fixing plate, and a second grinding component for grinding the sprue sleeve main body is also provided on the fixing plate; The auxiliary moving component is also provided with a first grinding component for grinding the inner wall of the sprue sleeve body.

[0008] Preferably: a first servo motor is further installed on one side of the operating table, an output end of the first servo motor is fixedly connected to a first transmission screw through a coupling, the first transmission screw is rotatably connected to the bottom of the operating table, and two first sliding rods are further installed at the bottom of the operating table, and the two first sliding rods are respectively arranged on both sides of the first transmission screw; The auxiliary moving assembly comprises a moving frame, one end of the moving frame close to the bottom is fixedly connected with a connecting shaft, the connecting shaft is threadedly connected to the first transmission screw, and both ends of the connecting shaft are slidably connected to the adjacent first sliding rods.

[0009] Preferably: a second servo motor is installed on one side of the mobile frame, and the output end of the second servo motor is fixedly connected to the second transmission screw through a coupling, the second transmission screw is rotatably connected to the mobile frame, and two second sliding rods are also installed in the mobile frame, and the two second sliding rods are respectively located on both sides of the second transmission screw, a second connecting frame is threadedly connected to the second transmission screw, and one end of the second connecting frame close to the two second sliding rods is respectively slidably connected to the two second sliding rods.

[0010] Preferably: the first grinding assembly includes a connecting plate, the connecting plate is fixedly connected to the second connecting frame, a third servo motor is installed on the side of the connecting plate away from the second connecting frame, the output end of the third servo motor is fixedly connected to a connecting frame through a coupling, a grinding rod is threadedly connected in the connecting frame, and a hexagonal connector is provided at one end of the grinding rod away from the connecting frame.

[0011] Preferably, the auxiliary fixing assembly comprises an adjusting plate, the adjusting plate is arranged above the fixing plate, a plurality of limiting grooves are provided on the top of the fixing plate, a moving rod having the same position as the plurality of limiting grooves is installed at the bottom of the adjusting plate, the plurality of moving rods are respectively slidably connected in adjacent limiting grooves, an electric push rod is also installed on the fixing plate, a connecting block is installed at the bottom of the adjusting plate, and an output end of the electric push rod is fixed to the connecting block at the bottom of the adjusting plate; Two sliding grooves are symmetrically arranged on the top of the adjusting plate, connecting rods are slidably arranged in the two sliding grooves, fixing rings are installed on the tops of the two connecting rods, and the gate sleeve body is placed between the two fixing rings.

[0012] Preferably: a through slot is further provided on the top of the adjustment plate, the second grinding assembly is arranged in the through slot, the second grinding assembly includes two limit plates, one of the limit plates is fixed to the first connecting frame, the other limit plate is arranged in the through slot, and the bottom of the limit plate in the through slot is fixed to the fixed plate, a third transmission screw is rotatably connected between the two limit plates, one end of the third transmission screw close to the first connecting frame passes through the adjacent limit plate and extends into the first connecting frame, an extended end of the third transmission screw is fixedly connected to a first synchronous gear, and the first synchronous gear is rotatably connected to the first connecting frame; Two third sliding rods are installed between the two limit plates, and the two third sliding rods are arranged on both sides of the third transmission screw. The third transmission screw is also threadedly connected with a sliding frame. The two ends of the sliding frame are respectively slidably connected to the two third sliding rods. A grinding head is also installed on the top of the sliding frame.

[0013] Preferably: the first connecting frame is also rotatably connected with a second synchronous gear, and the second synchronous gear is meshed with the first synchronous gear, and a connecting cylinder is installed on a side of the second synchronous gear away from the inside of the first connecting frame, and the connecting cylinder passes through the first connecting frame and extends to the outer surface of the first connecting frame; A connecting seat is also installed on the first connecting frame, and a through hole is opened on the connecting seat, and one end of the through hole is connected to the gate sleeve body, and the other end is connected to the connecting tube in the first connecting frame.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. When the present invention is in use, when grinding the inner wall of the gate sleeve, the gate sleeve body can be fixed by the fixing ring, thereby avoiding looseness or deformation caused by grinding. After the inner wall is ground, the grinding rod can be fixed to the second synchronous gear by inserting the hexagonal connector into the connecting tube. The second synchronous gear is meshed with the first synchronous gear for transmission. When the gate sleeve body is driven to rotate by the connecting frame, the third transmission screw can be synchronously driven to rotate by the first synchronous gear, so that the sliding frame and the grinding head move along the third transmission screw. The outer wall of the gate sleeve can be ground by rotating the gate sleeve body and coordinating the movement of the grinding head. The inside and outside of the gate sleeve can be ground by one device. The use is simple and fast, the production efficiency is high, and the processing accuracy is high. The automatic operation reduces labor costs and material waste, and improves product quality.

[0015] 2. The present invention can realize fast and accurate movement of key components such as the mobile frame, connecting plate and polishing rod through precise control of the servo motor. At the same time, automated operation reduces manual intervention and reduces the impact of human factors on production efficiency, making the entire production process smoother and more efficient. The high-precision control of the servo motor, combined with the fine design of the polishing rod and the polishing head, can realize precise polishing of the inside and outside of the gate sleeve body, which not only improves the surface quality of the product, but also ensures the dimensional accuracy and shape accuracy of the gate sleeve body, thereby improving the overall performance of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a work flow chart of the present invention; Figure 2 It is a schematic diagram of the first viewing angle of the present invention; Figure 3 It is a second viewing angle schematic diagram of the present invention; Figure 4 For the present invention Figure 3 The enlarged schematic diagram of point A in the middle; Figure 5 It is a partial structural schematic diagram of the limiting component and the auxiliary fixing component in the present invention; Figure 6 It is a partial structural schematic diagram of the fixing plate and the auxiliary fixing assembly in the present invention; Figure 7 It is a schematic structural diagram of the second grinding assembly in the present invention.

[0017] In the figure: 1, operating table; 11, first servo motor; 12, first transmission screw; 13, first sliding rod; 2, limit assembly; 21, fixed frame; 22, first connecting frame; 23, fixed plate; 24, limit slot; 25, electric push rod; 26, connecting seat; 3, auxiliary moving assembly; 31, moving frame; 32, connecting shaft; 33, second servo motor; 34, second transmission screw; 35, second sliding rod; 36, second connecting frame; 4, first grinding assembly; 41, connecting plate; 42 , the third servo motor; 43, the connecting frame; 44, the grinding rod; 45, the hexagonal connector; 5, the auxiliary fixing assembly; 51, the adjusting plate; 52, the sliding groove; 53, the connecting rod; 54, the fixing ring; 55, the moving rod; 6, the second grinding assembly; 61, the limiting plate; 62, the third transmission screw; 63, the third sliding rod; 64, the first synchronous gear; 65, the second synchronous gear; 66, the connecting tube; 67, the sliding frame; 68, the grinding head; 7, the gate sleeve body; 71, the gate sleeve injection channel. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0020] For example, see Figure 1-7 The present invention provides a production process for a gate sleeve of a die-casting machine, and the process is as follows: First, the first servo motor 11 is started, so that the first servo motor 11 drives the first transmission screw 12 to rotate, and the first transmission screw 12 rotates to drive the moving frame 31 to move in a direction away from the fixed frame 21, so that the moving frame 31 is separated from the fixed frame 21, and the sprue bushing body 7 to be processed is placed between the two fixing rings 54 on the fixing plate 23, and the sprue bushing body 7 is preliminarily fixed by the two fixing rings 54; The first servo motor 11 is started again to move the movable frame 31 toward the fixed frame 21, so that the grinding rod 44 on the connecting plate 41 is inserted into the sprue sleeve body 7 and the hexagonal connector 45 is inserted into the connecting seat 26. The third servo motor 42 is started to drive the connecting frame 43 and the grinding rod 44 to rotate. The inside of the sprue sleeve body 7 is grinded by the rotation of the grinding rod 44. The second servo motor 33 is started to fine-tune the positions of the second connecting frame 36 and the connecting plate 41, so that the grinding is more detailed and thorough. After the inner surface is polished, the first servo motor 11 is started again, so that the first servo motor 11 drives the moving frame 31 to continue to move toward the direction close to the fixed frame 21, so that the hexagonal connector 45 passes through the connecting seat 26 and is inserted into the connecting tube 66, so that the hexagonal connector 45 is fixed to the connecting tube 66, and at the same time, the connecting frame 43 is clamped on one end of the gate sleeve body 7 and fixed to the gate sleeve body 7, and the electric push rod 25 is started to drive the adjustment plate 51 to move, so that the fixing ring 54 is no longer fixed to the gate sleeve body 7; The third servo motor 42 is started again. When the third servo motor 42 rotates, the sprue bushing body 7 is driven to rotate through the connecting frame 43. The second synchronous gear 65 and the connecting cylinder 66 in the first connecting frame 22 rotate synchronously under the drive of the hexagonal connecting head 45. The second synchronous gear 65 drives the first synchronous gear 64 and the third transmission screw 62 to rotate, so that the third transmission screw 62 drives the sliding frame 67 and the grinding head 68 to slide. The grinding head 68 cooperates with the sprue bushing body 7 to rotate, so as to grind the outer surface of the sprue bushing body 7. After grinding is completed, start the first servo motor 11 to move the movable frame 31 away from the fixed frame 21, remove the hexagonal connector 45 from the connecting tube 66, and remove the grinding rod 44 from the gate sleeve body 7, and then take out the ground gate sleeve body 7.

[0021] For example 2, please refer to Figure 1-7The present invention also provides a production device for a gate sleeve of a die-casting machine, comprising an operating table 1 and a gate sleeve body 7, wherein a gate sleeve injection channel 71 for conveying raw materials is provided inside the gate sleeve body 7, a limiting component 2 is installed on one end of the top of the operating table 1, and an auxiliary moving component 3 is slidably connected to the other end of the operating table 1, and the gate sleeve body 7 is placed between the limiting component 2 and the auxiliary moving component 3, and the limiting component 2 comprises two fixing frames 21, and the two fixing frames 21 are respectively installed on both sides of the operating table 1, and a first connecting frame 22 is installed between the two fixing frames 21, and a fixing plate 23 is installed on one side of the first connecting frame 22, and the fixing plate 2 An auxiliary fixing component 5 for fixing the sprue sleeve body 7 with an auxiliary limiting component 2 is slidably arranged above the operating table 1, a second grinding component 6 for grinding the sprue sleeve body 7 is also arranged on the fixing plate 23, a first grinding component 4 for grinding the inner wall of the sprue sleeve body 7 is also arranged on the auxiliary moving component 3, a first servo motor 11 is also installed on one side of the operating table 1, an output end of the first servo motor 11 is fixedly connected to a first transmission screw 12 through a coupling, the first transmission screw 12 is rotatably connected to the bottom of the operating table 1, and two first sliding rods 13 are also installed at the bottom of the operating table 1, and the two first sliding rods 13 The auxiliary moving assembly 3 includes a moving frame 31, one end of the moving frame 31 near the bottom is fixedly connected with a connecting shaft 32, the connecting shaft 32 is threadedly connected to the first driving screw 12, and both ends of the connecting shaft 32 are slidably connected with the adjacent first sliding rod 13, a second servo motor 33 is installed on one side of the moving frame 31, the output end of the second servo motor 33 is fixedly connected with a second driving screw 34 through a coupling, the second driving screw 34 is rotatably connected to the moving frame 31, and two second sliding rods 35 are also installed in the moving frame 31, and the two second sliding rods 35 are respectively located at the second On both sides of the transmission screw 34, the second transmission screw 34 is threadedly connected with a second connecting frame 36, and one end of the second connecting frame 36 close to the two second sliding rods 35 is slidably connected to the two second sliding rods 35 respectively. The first grinding assembly 4 includes a connecting plate 41, and the connecting plate 41 is fixedly connected to the second connecting frame 36. A third servo motor 42 is installed on the side of the connecting plate 41 away from the second connecting frame 36. The output end of the third servo motor 42 is fixedly connected to a connecting frame 43 through a coupling. A grinding rod 44 is threadedly connected in the connecting frame 43, and a hexagonal connector 45 is provided at one end of the grinding rod 44 away from the connecting frame 43; When in use, firstly start the first servo motor 11, so that the first servo motor 11 drives the first transmission screw 12 to rotate, and the first transmission screw 12 drives the mobile frame 31 to move in a direction away from the fixed frame 21 through the connecting shaft 32, so that the mobile frame 31 is separated from the fixed frame 21, and the sprue bushing body 7 to be processed is placed on the auxiliary fixing assembly 5, and the sprue bushing body 7 is preliminarily fixed by the auxiliary fixing assembly 5; After fixation, start the first servo motor 11 again to drive the movable frame 31 to move toward the fixed frame 21, so that the polishing rod 44 on the connecting plate 41 is inserted into the gate sleeve injection channel 71, and start the third servo motor 42 so that the third servo motor 42 drives the connecting frame 43 and the polishing rod 44 to rotate. The inside of the gate sleeve body 7 is polished by the rotation of the polishing rod 44. By starting the second servo motor 33, the position of the second connecting frame 36 and the connecting plate 41 can be fine-tuned to make the polishing more detailed and thorough.

[0022] For example 3, please refer to Figure 1-7 The auxiliary fixing assembly 5 includes an adjusting plate 51, which is arranged above the fixing plate 23. A plurality of limiting grooves 24 are provided on the top of the fixing plate 23. A moving rod 55 having the same position as the plurality of limiting grooves 24 is installed at the bottom of the adjusting plate 51. The plurality of moving rods 55 are respectively slidably connected to adjacent limiting grooves 24. An electric push rod 25 is also installed on the fixing plate 23. A connecting block is installed at the bottom of the adjusting plate 51. The output end of the electric push rod 25 is fixed to the connecting block at the bottom of the adjusting plate 51. Two sliding grooves 52 are symmetrically provided on the top of the adjusting plate 51. The two sliding grooves 52 are symmetrically provided on the top of the adjusting plate 51. A connecting rod 53 is slidably arranged in the movable groove 52, and a fixing ring 54 is installed on the top of the two connecting rods 53. The gate sleeve body 7 is placed between the two fixing rings 54. A through groove is also opened on the top of the adjusting plate 51. The second grinding assembly 6 is arranged in the through groove. The second grinding assembly 6 includes two limit plates 61, one of which is fixed to the first connecting frame 22, and the other limit plate 61 is arranged in the through groove, and the bottom of the limit plate 61 in the through groove is fixed to the fixing plate 23. A third transmission screw 62 is rotatably connected between the two limit plates 61. The third transmission screw One end of the rod 62 close to the first connecting frame 22 passes through the adjacent limiting plate 61 and extends into the first connecting frame 22. The extended end of the third transmission screw 62 is fixedly connected to the first synchronous gear 64. The first synchronous gear 64 is rotatably connected to the first connecting frame 22. Two third sliding rods 63 are also installed between the two limiting plates 61, and the two third sliding rods 63 are arranged on both sides of the third transmission screw 62. The third transmission screw 62 is also threadedly connected with a sliding frame 67. The two ends of the sliding frame 67 are respectively slidably connected to the two third sliding rods 63. The top of the sliding frame 67 A grinding head 68 is also installed on the first connecting frame 22, and a second synchronous gear 65 is rotatably connected to the first connecting frame 22, and the second synchronous gear 65 is meshed with the first synchronous gear 64. A connecting cylinder 66 is installed on the side of the second synchronous gear 65 away from the inside of the first connecting frame 22, and the connecting cylinder 66 penetrates the first connecting frame 22 and extends to the outer surface of the first connecting frame 22. A connecting seat 26 is also installed on the first connecting frame 22, and a through hole is opened on the connecting seat 26, and one end of the through hole is connected to the gate sleeve body 7, and the other end is connected to the connecting cylinder 66 in the first connecting frame 22; After the inner surface is polished, the first servo motor 11 is started again, so that the first servo motor 11 drives the moving frame 31 to continue to move toward the direction close to the fixed frame 21, so that the hexagonal connector 45 passes through the connecting seat 26 and is inserted into the connecting tube 66, so that the hexagonal connector 45 is fixed to the connecting tube 66, and at the same time, the connecting frame 43 is clamped on one end of the gate sleeve body 7 and fixed to the gate sleeve body 7, and the electric push rod 25 is started to drive the adjustment plate 51 to move, so that the two connecting rods 53 on the sliding groove 52 move from the straight groove opening of the sliding groove 52 to the oblique groove opening, so that the two fixing rings 54 are separated from each other and detached from the gate sleeve body 7, and the gate sleeve body 7 is no longer fixed; The third servo motor 42 is started again. When the third servo motor 42 rotates, the sprue bushing body 7 is driven to rotate through the connecting frame 43. The second synchronous gear 65 and the connecting cylinder 66 in the first connecting frame 22 rotate synchronously under the drive of the hexagonal connecting head 45. The second synchronous gear 65 drives the first synchronous gear 64 and the third transmission screw 62 to rotate, so that the third transmission screw 62 drives the sliding frame 67 and the grinding head 68 to slide. The grinding head 68 cooperates with the sprue bushing body 7 to rotate, so as to grind the outer surface of the sprue bushing body 7. After grinding is completed, start the first servo motor 11 to move the movable frame 31 away from the fixed frame 21, remove the hexagonal connector 45 from the connecting tube 66, and remove the grinding rod 44 from the gate sleeve body 7, and then take out the ground gate sleeve body 7.

[0023] It should be noted that the various devices in this application are common devices in the market, and can be selected according to specific needs during specific use. The circuit connection relationship of each device belongs to a simple series and parallel connection circuit. There is no innovation in the circuit connection part. Those skilled in the art can implement it relatively easily. It belongs to the existing technology and will not be elaborated on.

[0024] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A die casting machine sprue bushing, characterized in that: It comprises a sprue sleeve main body (7), wherein a sprue sleeve injection channel (71) for conveying raw materials is provided inside the sprue sleeve main body (7).

2. A production process for a sprue bushing for a die casting machine, characterized in that: The following steps are involved: S1. Fixing the sprue bushing: firstly, start the first servo motor (11) on the operating table (1), so that the first servo motor (11) drives the first transmission screw (12) to rotate, and the first transmission screw (12) drives the movable frame (31) to be separated from the fixed frame (21) by the rotation, and the sprue bushing body (7) to be processed is placed between the two fixing rings (54) on the fixing plate (23), and the sprue bushing body (7) is preliminarily fixed by the two fixing rings (54); S2, inner wall grinding: start the first servo motor (11) again to insert the grinding rod (44) on the connecting plate (41) into the injection channel (71) of the sprue sleeve, and start the third servo motor (42) to drive the grinding rod (44) to rotate to grind the inside of the sprue sleeve body (7); S3, outer wall grinding: after the inner wall is polished, the first servo motor (11) is started again to fix the connection frame (43) and the sprue sleeve body (7), and the third servo motor (42) is started to drive the sprue sleeve body (7) to rotate, so that the second synchronous gear (65) drives the first synchronous gear (64) and the third transmission screw (62) to rotate, and the third transmission screw (62) drives the sliding frame (67) and the grinding head (68) to slide, and the outer surface of the sprue sleeve body (7) is polished by the grinding head (68); S4, removing the component: After the polishing is completed, the first servo motor (11) is started to drive the moving frame (31) to move, so that the polishing rod (44) is removed from the sprue sleeve body (7), and the polished sprue sleeve body (7) is taken out.

3. The production process of a die casting machine sprue bushing according to claim 2, characterized in that: A limit assembly (2) is installed on one end of the top of the operating table (1), and an auxiliary moving assembly (3) is slidably connected to the other end of the operating table (1). The sprue sleeve body (7) is placed between the limit assembly (2) and the auxiliary moving assembly (3). The limit assembly (2) comprises two fixing frames (21), and the two fixing frames (21) are respectively installed on two sides of the operating table (1). A first connecting frame (22) is installed between the two fixing frames (21). The fixing plate (23) is installed on one side of the first connecting frame (22). An auxiliary fixing assembly (5) for fixing the sprue sleeve body (7) by the auxiliary limit assembly (2) is slidably arranged above the fixing plate (23). A second grinding assembly (6) for grinding the sprue sleeve body (7) is also arranged on the fixing plate (23); The auxiliary moving component (3) is also provided with a first grinding component (4) for grinding the inner wall of the sprue sleeve body (7).

4. The production process of a die casting machine sprue bushing according to claim 3, characterized in that: The first servo motor (11) is installed on one side of the operating table (1); one end of the first transmission screw (12) close to the first servo motor (11) is fixed to the output end of the first servo motor (11) via a coupling; the first transmission screw (12) is rotatably connected to the bottom of the operating table (1); two first sliding rods (13) are also installed at the bottom of the operating table (1); the two first sliding rods (13) are respectively arranged on both sides of the first transmission screw (12); The auxiliary moving assembly (3) comprises a moving frame (31), one end of the moving frame (31) close to the bottom is fixedly connected to a connecting shaft (32), the connecting shaft (32) is threadedly connected to the first transmission screw rod (12), and both ends of the connecting shaft (32) are slidably connected to the adjacent first sliding rod (13).

5. The production process of a die casting machine sprue bushing according to claim 4, characterized in that: A second servo motor (33) is installed on one side of the moving frame (31); an output end of the second servo motor (33) is fixedly connected to a second transmission screw (34) via a coupling; the second transmission screw (34) is rotatably connected to the moving frame (31); two second sliding rods (35) are also installed in the moving frame (31); the two second sliding rods (35) are respectively located on both sides of the second transmission screw (34); a second connecting frame (36) is threadedly connected to the second transmission screw (34); and one end of the second connecting frame (36) close to the two second sliding rods (35) is slidably connected to the two second sliding rods (35).

6. The production process of a die casting machine sprue bushing according to claim 5, characterized in that: The first grinding assembly (4) comprises a connecting plate (41), the connecting plate (41) being fixedly connected to the second connecting frame (36), the third servo motor (42) being mounted on a side of the connecting plate (41) away from the second connecting frame (36), the connecting frame (43) being fixed to an output end of the third servo motor (42) via a coupling, the grinding rod (44) being threadedly connected to the connecting frame (43), and a hexagonal connector (45) being provided at one end of the grinding rod (44) away from the connecting frame (43).

7. The production process of a die casting machine sprue bushing according to claim 6, characterized in that: The auxiliary fixing assembly (5) comprises an adjusting plate (51), the adjusting plate (51) being arranged above the fixing plate (23), a plurality of limiting grooves (24) being provided on the top of the fixing plate (23), a moving rod (55) being installed at the bottom of the adjusting plate (51) at the same position as the plurality of limiting grooves (24), the plurality of moving rods (55) being respectively slidably connected in adjacent limiting grooves (24), an electric push rod (25) being also installed on the fixing plate (23), a connecting block being installed at the bottom of the adjusting plate (51), and an output end of the electric push rod (25) being fixed to the connecting block at the bottom of the adjusting plate (51); Two sliding grooves (52) are symmetrically provided on the top of the adjustment plate (51), connecting rods (53) are slidably arranged in the two sliding grooves (52), the two fixing rings (54) are respectively installed on the tops of adjacent connecting rods (53), and the gate sleeve body (7) is placed between the two fixing rings (54).

8. The production process of a gate sleeve for a die casting machine according to claim 7, characterized in that: The top of the adjustment plate (51) is also provided with a through slot, the second grinding assembly (6) is arranged in the through slot, the second grinding assembly (6) comprises two limit plates (61), one of the limit plates (61) is fixed to the first connecting frame (22), the other limit plate (61) is arranged in the through slot, and the bottom of the limit plate (61) in the through slot is fixed to the fixed plate (23), the third transmission screw (62) is rotatably connected between the two limit plates (61), one end of the third transmission screw (62) close to the first connecting frame (22) passes through the adjacent limit plate (61) and extends into the first connecting frame (22), the first synchronous gear (64) is fixed to the extended end of the third transmission screw (62), and the first synchronous gear (64) is rotatably connected to the first connecting frame (22); Two third sliding rods (63) are also installed between the two limiting plates (61), and the two third sliding rods (63) are arranged on both sides of the third transmission screw (62), the sliding frame (67) is threadedly connected to the third transmission screw (62), and the two ends of the sliding frame (67) are respectively slidably connected to the two third sliding rods (63), and the grinding head (68) is installed on the top of the sliding frame (67).

9. The production process of a die-casting machine sprue bushing according to claim 8, characterized in that: The second synchronous gear (65) is rotatably connected to the first connecting frame (22), and the second synchronous gear (65) is meshed with the first synchronous gear (64); a connecting tube (66) is installed on a side of the second synchronous gear (65) away from the inside of the first connecting frame (22), and the connecting tube (66) passes through the first connecting frame (22) and extends to the outer surface of the first connecting frame (22); A connecting seat (26) is also mounted on the first connecting frame (22), and a through hole is formed on the connecting seat (26), one end of the through hole is connected to the sprue sleeve body (7), and the other end of the through hole is connected to the connecting tube (66) in the first connecting frame (22).

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