A digital die-casting machine injection cylinder

Abstract

This utility model discloses a digital die-casting machine injection cylinder, belonging to the technical field of die-casting machine injection cylinders. It includes a cylinder barrel, with a sealing plate and a flange fixedly connected to each end of the cylinder barrel. An end cover is fixedly installed on the flange, and a sealing cover is provided on the sealing plate. A piston is disposed inside the cylinder barrel, and a sealing ring is provided outside the piston. A piston rod is fixedly connected to the piston, penetrating the end cover. A positioning groove is opened on the sealing cover, which is slidably connected to the sealing plate. Multiple mounting grooves are opened through the sealing plate. This utility model allows for the removal of the sealing cover and the sealing plate, at which point the piston rod and piston can be pulled out from the end of the cylinder barrel near the sealing plate, completing the disassembly of the piston rod and piston. The operation process is simple and requires no tools, thus facilitating the replacement of the lubricating oil in the cylinder barrel and the maintenance of the die-casting machine injection cylinder, thereby increasing the practicality and flexibility of the die-casting machine injection cylinder.

Description

Technical Field

[0001] This utility model relates to a digital die-casting machine injection cylinder, belonging to the technical field of die-casting machine injection cylinders. Background Technology

[0002] The injection cylinder of a die-casting machine is a core actuator in die-casting equipment. Its sealing performance and disassembly / assembly efficiency directly affect the stability of equipment operation, maintenance costs, and production efficiency.

[0003] Traditional injection cylinders typically use bolts to fasten the cylinder barrel and end cap. The assembly of the cylinder barrel and end cap requires tightening multiple sets of bolts one by one. The operation relies on special tools, and the installation steps are cumbersome and time-consuming, resulting in low maintenance efficiency and making it inconvenient to maintain the injection cylinder.

[0004] Therefore, a new solution is needed to address this problem. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a digital die-casting machine injection cylinder, which solves the problem that in the prior art, the cylinder barrel and end cover of the traditional injection cylinder are usually connected by bolt fastening. The assembly of the cylinder barrel and end cover requires multiple sets of bolts to be tightened one by one. The operation process relies on special tools, the installation steps are cumbersome and time-consuming, resulting in low maintenance efficiency and inconvenience for the maintenance of the injection cylinder.

[0006] The technical problem to be solved by this utility model is achieved by the following technical solution: A digital die-casting machine injection cylinder includes a cylinder barrel, with a sealing plate and a flange fixedly connected to the ends of the cylinder barrel respectively. An end cover is fixedly installed on the flange, and a sealing cover is provided on the sealing plate. A piston is provided inside the cylinder barrel, and a sealing ring is provided outside the piston. A piston rod that penetrates the end cover is fixedly connected to the piston. A positioning groove that is slidably connected to the sealing plate is opened on the sealing cover. Multiple installation grooves are opened through the sealing plate. Multiple snap-fit ​​blocks that can be inserted into the installation grooves are fixedly connected to the inner wall of the positioning groove away from the sealing plate. A thread is opened on the cylinder barrel, and a threaded ring that is threadedly connected to the thread is fitted on the cylinder barrel. A snap-fit ​​component that can form a snap-fit ​​structure with the snap-fit ​​blocks is provided on the threaded ring. A sealing structure that can seal the sealing cover and the sealing plate is provided on the threaded ring.

[0007] By adopting the above technical solution, during use, the snap-fit ​​block is inserted into the installation groove, and the outer surface of the sealing disc away from the cylinder barrel abuts against the sealing gasket. Then, the snap-fit ​​assembly is rotated to snap the snap-fit ​​assembly and the snap-fit ​​block together. Then, the threaded ring is rotated around the cylinder barrel axis. Because the threaded ring is connected to the threaded thread, rotating the threaded ring in both directions can drive the threaded ring to move back and forth along the cylinder barrel axis. When the rotation direction of the threaded ring and the snap-fit ​​assembly is the same, the threaded ring moves away from the sealing disc. Under the action of the sealing structure, this process drives the snap-fit ​​block to move closer to the cylinder barrel, thereby causing the sealing cover to fit tightly against the sealing disc, thus installing a seal between the sealing cover and the sealing disc. The installation between the sealing cover and the sealing disc can be completed without the use of tools, which is more flexible and labor-saving.

[0008] This utility model is further configured as follows: the snap-fit ​​assembly includes a positioning ring, an inner groove is formed in the positioning ring, a limit ring is provided in the inner groove, a connecting ring groove is formed on the side of the positioning ring near the flange, the threaded ring extends into the inner groove through the connecting ring groove and is fixedly connected to the limit ring, a sliding ring sleeved on the cylinder is fixedly connected on the side of the limit ring away from the flange, a slot is formed on the side of the positioning ring near the cylinder, a plurality of locking blocks that can be inserted into the locking slot are fixedly connected on the sliding ring, and a limit post that can abut against one side of the locking block is fixedly connected on the locking block. The sealing structure includes a sealing gasket fixedly connected to the inner wall of the positioning groove away from the sealing plate, an installation cylinder is fixedly connected to the threaded ring, a fixing groove is formed through the installation cylinder, a rotating column is rotatably connected inside the installation cylinder, a positioning rod is fixedly connected to the rotating column, and a force-saving mechanism is provided on the positioning rod.

[0009] By adopting the above technical solution, during use, the snap-fit ​​block is inserted into the mounting groove, ensuring that the outer surface of the sealing disc away from the cylinder barrel abuts against the sealing gasket. Then, the sliding ring is rotated, causing the snap-fit ​​block to engage with the groove during rotation, until the limiting post abuts against one side of the snap-fit ​​block. At this point, the mounting cylinder is rotated in the same direction as the sliding ring, causing it to rotate around the cylinder barrel's axis. The mounting cylinder drives the threaded ring to rotate. Because the limiting post abuts against the snap-fit ​​block at this point, it restricts the snap-fit ​​block's rotation, preventing it from continuing to rotate during the mounting cylinder's rotation and avoiding misalignment or disengagement. Furthermore, because the threaded ring is threadedly connected, its rotation drives the threaded ring... Moving away from the sealing disc, the limiting ring also moves away from the sealing disc as it rotates within the inner groove. This, in turn, moves the positioning ring, which in turn moves the sliding ring away from the sealing disc. As the sliding ring moves away from the sealing disc, the locking block moves away from the sealing disc, which in turn moves the locking block closer to the cylinder. This process also moves the sealing cover closer to the cylinder, ensuring a tight seal between the sealing gasket and the sealing disc. This achieves a seal between the sealing cover and the sealing disc, making installation and disassembly more efficient and faster, requiring no tools and simplifying operation. This also facilitates the maintenance of the die-casting machine's injection cylinder, improving its practicality.

[0010] During disassembly, rotate the mounting cylinder in the reverse direction to release the tight contact between the sealing cover and the sealing disc. Then, rotate the sliding ring in the reverse direction to disengage the locking block from the slot. This releases the locking block from the snap-fit ​​block, allowing the sealing disc to be pulled away from the sealing cover. This allows the snap-fit ​​block to be pulled out of the mounting slot, and the sealing cover can then be removed from the sealing disc. At this point, the piston rod and piston can be pulled out from the end of the cylinder near the sealing disc, completing the disassembly of the piston rod and piston. The operation is simple and requires no tools, making it easy to change the lubricating oil in the cylinder and to maintain the injection cylinder of the casting machine, thus increasing the practicality and flexibility of the injection cylinder.

[0011] The present invention is further configured as follows: the labor-saving mechanism includes a handle rod, a positioning rod passing through the handle rod, a limiting groove being opened through the outer surface of the handle rod, a limiting block being fixedly connected to the outer surface of the positioning rod and slidably connected to the limiting groove, a handle ball being fixedly connected to the end of the limiting block away from the mounting cylinder, a mounting bracket being fixedly connected to the outer surface of the cylinder, a limiting post being fixedly connected to the end of the mounting bracket, and the handle rod being snapped into the mounting bracket.

[0012] By adopting the above technical solution, during use, the handle is rotated around the rotating column to disengage it from the mounting bracket. The vertical handle is then rotated to a horizontal position, and then pulled out to slide it away from the cylinder, thereby increasing the length of the positioning rod. Rotating the handle at this time can drive the threaded ring to rotate. The increased arm length of the handle makes rotating the threaded ring easier, thus making the installation or removal of the die-casting machine injection cylinder easier. Furthermore, no tools are needed to install or remove the die-casting machine injection cylinder, thereby increasing its practicality and flexibility.

[0013] This utility model is further configured such that: a connecting groove is provided on the side of the end cover near the flange and on the side of the positioning groove opposite to the sealing plate; a second oil hole communicating with the connecting groove is provided on the end cover; and a first oil hole communicating with the connecting groove is also provided on the sealing cover. Rolling ring grooves are provided on the inner walls of opposite sides of the inner ring groove, and multiple rotating grooves are provided on opposite sides of the limiting ring. Rolling balls are slidably connected within the rotating grooves, extending outwards from the outer side of the limiting ring and abutting against the rolling ring grooves.

[0014] By adopting the above technical solution, the area of ​​the rotating groove that encloses the rolling ball exceeds the radius of the rolling ball. This restricts the rolling ball, ensuring that the rotating groove can only roll inside the rolling ball and cannot detach from it.

[0015] During rotation, the limiting ring drives the rolling ball to roll in the rotating groove, and the rolling ball rolls and abuts in the rolling ring groove. The cooperation between the rolling ball and the rolling ring groove can reduce the friction between the limiting ring and the positioning ring, and reduce the friction between the limiting ring and the inner ring groove, thus making it easier to rotate the mounting cylinder.

[0016] The beneficial effects of this utility model are as follows: During disassembly, the mounting cylinder is rotated in the opposite direction to release the tight contact between the sealing cover and the sealing disc. Then, the sliding ring is rotated in the opposite direction to cause the sliding ring to drive the locking block out of the slot. At this time, the locking block and the locking block are released, and the sealing disc can be pulled away from the sealing cover, so that the locking block can be pulled out from the mounting slot. Then, the sealing cover can be removed from the sealing disc. At this time, the piston rod and piston can be pulled out from the end of the cylinder near the sealing disc, thus completing the disassembly of the piston rod and piston. The operation process is simple and does not require the use of tools, which facilitates the replacement of the lubricating oil in the cylinder and the maintenance of the injection cylinder of the casting machine, thereby increasing the practicality and flexibility of the injection cylinder of the casting machine. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the bottom structure of the end cap of this utility model;

[0019] Figure 3 This is a schematic diagram of the sealing disc structure of this utility model;

[0020] Figure 4 This is a vertical cross-sectional view of the positioning ring and limiting ring of this utility model;

[0021] Figure 5 This is a vertical cross-sectional view of the positioning ring of this utility model;

[0022] Figure 6 This is a cross-sectional view of the cylinder of this utility model.

[0023] In the picture:

[0024] 1. Piston rod; 2. End cap; 3. Cylinder; 4. Sealing cap; 5. Sealing disc; 6. Flange; 7. Mounting groove; 8. Snap-fit ​​block; 9. First oil hole; 10. Scale groove; 11. Second oil hole; 12. Sensor assembly; 13. Sealing gasket; 14. Snap-fit ​​groove; 15. Snap-fit ​​block; 16. Limiting post; 17. Sliding ring; 18. Positioning ring; 19. Threaded ring; 20. Connecting ring groove; 21. Limiting ring; 22. Rolling ring groove; 23. Inner ring groove; 24. Rotating groove; 25. Rolling ball; 26. Connecting groove; 27. Rotating post; 28. Fixing groove; 29. ​​Mounting cylinder; 30. Mounting bracket; 31. Limiting post; 32. Thread; 33. Handle lever; 34. Positioning rod; 35. Piston; 36. Sealing ring; 37. Limiting groove; 38. Limiting block; 39. Positioning groove. Detailed Implementation

[0025] To facilitate a clear understanding of the technical means, creative features, objectives, and effects of this utility model, the following details... Figure 1-6 As shown, this utility model is further illustrated.

[0026] like Figure 1-6 As shown, this utility model is a digital die-casting machine injection cylinder, including a cylinder barrel 3. A sealing disc 5 and a flange 6 are fixedly connected to the ends of the cylinder barrel 3 respectively. An end cover 2 is fixedly installed on the flange 6 by bolts. A sealing cover 4 is provided on the sealing disc 5. A piston 35 is provided inside the cylinder barrel 3. A sealing ring 36 is provided outside the piston 35. A piston rod 1 that penetrates the end cover 2 is fixedly connected to the piston 35. A positioning groove 39 that is slidably connected to the sealing disc 5 is opened on the sealing disc 5. Multiple installation grooves 7 are opened through the sealing disc 5. Multiple snap-fit ​​blocks 8 that can be inserted into the installation grooves 7 are fixedly connected to the inner wall of the positioning groove 39 away from the sealing disc 5. A thread 32 is opened on the cylinder barrel 3. A threaded ring 19 that is threadedly connected to the thread 32 is sleeved on the cylinder barrel 3. A snap-fit ​​component that can form a snap-fit ​​structure with the snap-fit ​​blocks 8 is provided on the threaded ring 19. A sealing structure that can seal the sealing cover 4 and the sealing disc 5 is provided on the threaded ring 19.

[0027] In use, insert the snap-fit ​​block 8 into the mounting slot 7, and make the outer surface of the sealing disc 5 away from the cylinder 3 abut against the sealing gasket 13. Then rotate the snap-fit ​​assembly to make the snap-fit ​​assembly and the snap-fit ​​block 8 snap together. Then rotate the threaded ring 19 around the axis of the cylinder 3. Since the threaded ring 19 is threadedly connected to the thread 32, rotating the threaded ring 19 in both directions can drive the threaded ring 19 to move back and forth along the axis of the cylinder 3. When the rotation direction of the threaded ring 19 is the same as that of the snap-fit ​​assembly, the threaded ring 19 moves away from the sealing disc 5. Under the action of the sealing structure, the snap-fit ​​block 8 is moved closer to the cylinder 3 during this process, which in turn causes the sealing cover 4 to be tightly attached to the sealing disc 5, so that the sealing cover 4 and the sealing disc 5 are sealed. The installation between the sealing cover 4 and the sealing disc 5 can be completed without the use of tools, which is more flexible and labor-saving.

[0028] like Figure 1-5 As shown, the snap-fit ​​assembly includes a positioning ring 18, an inner groove 23, and a limit ring 21. A connecting ring groove 20 connecting the inner groove 23 is provided in the inner groove 23 on the side of the positioning ring 18 near the flange 6. A threaded ring 19 extends into the inner groove 23 through the connecting ring groove 20 and is fixedly connected to the limit ring 21 on the side away from the flange 6. The limit ring 21 is sleeved on the outside of the cylinder 3. A sliding ring 17 sleeved on the outside of the cylinder 3 is fixedly connected to the side of the limit ring 21 away from the flange 6. A snap-fit ​​groove 14 is provided on the side of the positioning ring 18 near the cylinder 3. The vertical cross-section of the snap-fit ​​groove 14 is "L" shaped. Multiple snap blocks 15 that can be inserted into the snap-fit ​​groove 14 are fixedly connected to the sliding ring 17. The vertical cross-section of the snap blocks 15 is also "L" shaped. The snap-fit ​​groove 14 is arranged in a circumferential array along the cylinder 3. A limit post 16 that can abut against one side of the snap-fit ​​block 8 is fixedly connected to the snap block 15.

[0029] like Figure 1-4 As shown, the sealing structure includes a sealing gasket 13 fixedly connected to the inner wall of the positioning groove 39 on the side away from the sealing disc 5, an mounting cylinder 29 fixedly connected to the threaded ring 19, a fixing groove 28 extending through the mounting cylinder 29 and extending out of the mounting cylinder 29 on the side away from the threaded ring 19, a rotating column 27 rotatably connected inside the mounting cylinder 29, a positioning rod 34 fixedly connected to the rotating column 27, and a force-saving mechanism provided on the positioning rod 34.

[0030] In use, insert the snap-fit ​​block 8 into the mounting groove 7, ensuring that the outer surface of the sealing disc 5 away from the cylinder 3 abuts against the sealing gasket 13. Then, rotate the sliding ring 17, causing the snap-fit ​​block 15 to engage with the slot 14 during rotation, until the limiting post 16 abuts against one side of the snap-fit ​​block 8. At this point, rotate the mounting cylinder 29 in the same direction as rotating the sliding ring 17, causing the mounting cylinder 29 to rotate around the axis of the cylinder 3. The mounting cylinder 29 drives the threaded ring 19 to rotate. Because the limiting post 16 abuts against the snap-fit ​​block 8, it restricts the snap-fit ​​block 15, preventing it from rotating further during the rotation of the mounting cylinder 29 and avoiding misalignment or disengagement between the snap-fit ​​block 8 and the snap-fit ​​block 15. Since the threaded ring 19 is threadedly connected to the thread 32, the threaded ring 19 rotates during this process. The moving threaded ring 19 moves away from the sealing disc 5, simultaneously causing the limiting ring 21 to rotate within the inner ring groove 23 and move away from the sealing disc 5. This, in turn, causes the positioning ring 18 to move, which in turn causes the sliding ring 17 to move away from the sealing disc 5. As the sliding ring 17 moves away from the sealing disc 5, it also causes the locking block 15 to move away from the sealing disc 5, which in turn causes the locking block 8 to move closer to the cylinder 3. During this process, the sealing cover 4 moves closer to the cylinder 3, thereby ensuring that the sealing gasket 13 and the sealing disc 5 are tightly abutted together. This achieves a sealing seal between the sealing cover 4 and the sealing disc 5, making installation and disassembly more efficient and quick. No tools are required, and the operation is simple, which facilitates the maintenance of the die-casting machine injection cylinder and improves its practicality.

[0031] During disassembly, rotate the mounting cylinder 29 in the reverse direction to release the tight contact between the sealing cover 4 and the sealing disc 5. Then, rotate the sliding ring 17 in the reverse direction to cause the sliding ring 17 to drive the locking block 15 out of the locking groove 14. At this time, the locking block 15 and the locking block 8 are released. The sealing disc 5 can then be pulled away from the sealing cover 4, allowing the locking block 8 to be pulled out from the mounting groove 7. The sealing cover 4 can then be removed from the sealing disc 5. At this time, the piston rod 1 and the piston 35 can be pulled out from the end of the cylinder 3 near the sealing disc 5, completing the disassembly of the piston rod 1 and the piston 35. The operation process is simple and does not require the use of tools, which facilitates the replacement of the lubricating oil in the cylinder 3 and the maintenance of the injection cylinder of the casting machine, thereby increasing the practicality and flexibility of the injection cylinder of the casting machine.

[0032] like Figure 6As shown, the labor-saving mechanism includes a handle 33, a positioning rod 34 that passes through the handle 33, a limiting groove 37 that passes through the outer surface of the handle 33, a limiting block 38 that is slidably connected to the limiting groove 37 that is fixedly connected to the outer surface of the positioning rod 34, a handle ball that is fixedly connected to the end of the limiting block 38 away from the mounting cylinder 29, a mounting bracket 30 that is fixedly connected to the outer surface of the cylinder 3, the mounting bracket 30 being in the shape of a "C", a limiting post 31 that is fixedly connected to the end of the mounting bracket 30 being in the shape of a cylinder, the mounting bracket 30 being made of elastic stainless steel, the handle 33 being snapped into the mounting bracket 30, and the coverage of the mounting bracket 30 over the handle 33 exceeding the radius of the handle 33.

[0033] In this design, when in use, the handle lever 33 is rotated around the rotating column 27 to disengage it from the mounting bracket 30. The vertical handle lever 33 is then rotated to a horizontal position, and then pulled out to slide it away from the cylinder 3, thereby increasing the length of the positioning rod 34. Rotating the handle lever 33 at this time can drive the threaded ring 19 to rotate. The handle lever 33 can increase the arm length of the positioning rod 34, making it easier to rotate the threaded ring 19. This makes it easier to install or remove the die-casting machine injection cylinder, and no tools are needed to install or remove the die-casting machine injection cylinder, thus increasing the practicality and flexibility of the die-casting machine injection cylinder.

[0034] Furthermore, after use, slide the handle lever 33 towards the cylinder 3 and then rotate the handle lever 33 around the rotating column 27. During the rotation, the handle lever 33 is re-engaged into the "C"-shaped mounting bracket 30, which has a storage function for the handle lever 33, thereby improving the practicality of the die-casting machine injection cylinder.

[0035] like Figure 1-2 As shown, the end cover 2 has a connecting groove 26 on the side near the flange 6 and the side of the positioning groove 39 opposite to the sealing plate 5. The end cover 2 has a second oil hole 11 that communicates with the connecting groove 26. The sealing cover 4 also has a first oil hole 9 that communicates with the connecting groove 26.

[0036] like Figure 1-2 As shown, the piston rod 1 has multiple scale grooves 10, the sensor assembly 12 is installed in the connecting groove 26 on the end cover 2, and a sealing assembly is provided between the piston rod 1 and the end cover 2.

[0037] The graduated groove 10 is a small groove evenly cut on the piston rod 1 with a length interval of one millimeter. The graduated groove 10 has a bottom and a top. The graduated groove 10 is filled with ceramic, and the surface of the piston rod 1 is coated with a ceramic layer to ensure the hardness and roughness of the piston rod 1 surface, making the piston rod 1 surface smoother. A controller is set on the cylinder 3. The controller is electrically connected to the sensor assembly 12. When the piston rod 1 moves, the sensor on the sensor assembly 12 installed in the connecting groove 26 detects the movement of the graduated groove 10 on the piston rod 1. The sensor assembly 12 outputs a fluctuation signal and transmits it to the controller to read the speed of the graduated groove 10 and output an analog signal. The speed change is displayed by the decoder on the controller, the running speed of the piston rod 1 is calculated, and the result is displayed on the screen. This completes the digital display, which has high reading accuracy, fast response speed, and is convenient for operators to observe and debug.

[0038] like Figure 3-5 As shown, rolling ring grooves 22 are provided on the inner walls of opposite sides of the inner ring groove 23, and multiple rotating grooves 24 are provided on opposite sides of the limiting ring 21. A rolling ball 25 is slidably connected in the rotating groove 24. The rolling ball 25 extends out of the outer side of the limiting ring 21 and abuts against the rolling ring groove 22.

[0039] In this design, the area of ​​the rotating groove 24 that encloses the rolling ball 25 exceeds the radius of the rolling ball 25. This restricts the rolling ball 25, ensuring that the rotating groove 24 can only roll within the rolling ball 25 and cannot detach from it.

[0040] During rotation, the limiting ring 21 drives the rolling ball 25 to roll in the rotating groove 24, and the rolling ball 25 rolls and abuts in the rolling ring groove 22. The cooperation between the rolling ball 25 and the rolling ring groove 22 can reduce the friction between the limiting ring 21 and the positioning ring 18, and reduce the friction between the limiting ring 21 and the inner ring groove 23, thereby making it easier to rotate the mounting cylinder 29.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of this utility model. All such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A digitalization injection cylinder for a die casting machine, comprising a cylinder barrel (3), characterized in that: The cylinder (3) is fixedly connected to a sealing disc (5) and a flange (6) at its ends. An end cover (2) is fixedly installed on the flange (6). A sealing cover (4) is provided on the sealing disc (5). A piston (35) is provided inside the cylinder (3). A sealing ring (36) is provided outside the piston (35). A piston rod (1) that penetrates the end cover (2) is fixedly connected to the piston (35). A positioning groove (39) that is slidably connected to the sealing disc (5) is provided on the sealing disc (5). A through-hole is provided on the sealing disc (5). There are multiple mounting slots (7), and multiple snap-fit ​​blocks (8) that can be inserted into the mounting slots (7) are fixedly connected to the inner wall of the positioning slot (39) away from the sealing disc (5). The cylinder (3) is provided with threads (32), and a threaded ring (19) that is threadedly connected to the thread (32) is fitted on the cylinder (3). The threaded ring (19) is provided with snap-fit ​​components that can form a snap-fit ​​structure with the snap-fit ​​blocks (8), and the threaded ring (19) is provided with a sealing structure that can seal the sealing cover (4) and the sealing disc (5).

2. A digitalization injection cylinder of a die casting machine according to claim 1, characterized in that: The snap-fit ​​assembly includes a positioning ring (18), an inner ring groove (23) is provided in the positioning ring (18), a limit ring (21) is provided in the inner ring groove (23), a connecting ring groove (20) is provided on the side of the positioning ring (18) near the flange (6) and connected to the inner ring groove (23), a threaded ring (19) extends into the inner ring groove (23) through the connecting ring groove (20) and is fixedly connected to the limit ring (21) on the side of the limit ring (21) away from the flange (6), a sliding ring (17) sleeved on the cylinder (3) is fixedly connected on the side of the positioning ring (18) near the cylinder (3), a slot (14) is provided on the side of the sliding ring (17), a plurality of locking blocks (15) that can be inserted into the slot (14) are fixedly connected on the sliding ring (17), and a limit post (16) that can abut against one side of the snap-fit ​​block (8) is fixedly connected on the locking block (15).

3. A digitalization injection cylinder of a die casting machine according to claim 1, characterized in that: The sealing structure includes a sealing gasket (13) fixedly connected to the inner wall of the positioning groove (39) away from the sealing disc (5), an mounting cylinder (29) fixedly connected to the threaded ring (19), a fixing groove (28) penetrating through the mounting cylinder (29), a rotating column (27) rotatably connected inside the mounting cylinder (29), a positioning rod (34) fixedly connected to the rotating column (27), and a force-saving mechanism provided on the positioning rod (34).

4. A digitalization injection cylinder of a die casting machine according to claim 3, characterized in that: The force-saving mechanism includes a handle (33), a positioning rod (34) that passes through the handle (33), a limiting groove (37) that passes through the outer surface of the handle (33), a limiting block (38) that slides through the limiting groove (37) that is fixedly connected to the outer surface of the positioning rod (34), a handle ball that is fixedly connected to the end of the limiting block (38) away from the mounting cylinder (29), a mounting bracket (30) that is fixedly connected to the outer surface of the cylinder (3), a limiting post (31) that is fixedly connected to the end of the mounting bracket (30), and the handle (33) that is snapped into the mounting bracket (30).

5. The injection cylinder for a digital die-casting machine according to claim 1, characterized in that: The end cap (2) has a connecting groove (26) on the side near the flange (6) and the positioning groove (39) on the side opposite to the sealing plate (5). The end cap (2) has a second oil hole (11) communicating with the connecting groove (26), and the sealing cap (4) also has a first oil hole (9) communicating with the connecting groove (26).

6. The injection cylinder for a digital die-casting machine according to claim 2, characterized in that: Rolling ring grooves (22) are provided on the inner walls of the opposite sides of the inner ring groove (23), and multiple rotating grooves (24) are provided on the opposite sides of the limiting ring (21). A rolling ball (25) is slidably connected in the rotating groove (24), and the rolling ball (25) extends out of the outer side of the limiting ring (21) and abuts against the rolling ring groove (22).

Images