Detachable anti-adhesion structure of die-casting die sprue bush

Abstract

This invention relates to the field of die-casting mold sprue sleeve technology, specifically a detachable anti-sticking structure for die-casting mold sprue sleeves. It includes a sprue sleeve inlet seat, with a sprue sleeve delivery pipe fixedly connected to the bottom surface of the sprue sleeve inlet seat. A heating sleeve is slidably connected to the outer surface of the sprue sleeve delivery pipe. An insulation sleeve is fixedly installed inside the heating sleeve, and a set of electric heating wires is fixedly installed inside the insulation sleeve. An external power supply is electrically connected to the outer surface of the insulation sleeve, penetrating the outer surface of the heating sleeve and extending to the outside of the heating sleeve. A cooling water tank is provided inside the sprue sleeve inlet seat. Detachable connection is achieved through a limiting mechanism inside the heating sleeve cooperating with a tongue plate on the bottom surface of the sprue sleeve inlet seat. The heating sleeve can be quickly installed and removed without special tools, making operation simple and convenient, significantly shortening the maintenance and replacement time of the heating components, and improving production continuity.

Description

Technical Field

[0001] This invention relates to the field of die casting mold sprue sleeve technology, and specifically to a detachable anti-sticking structure for die casting mold sprue sleeve. Background Technology

[0002] Die casting molds are the core tools for forming metal castings in die casting production. The sprue bushing, as a key component of the gating system, is responsible for accurately guiding the molten metal output from the injection chamber of the die casting machine into the mold cavity. During die casting, the molten metal flows through the sprue bushing at extremely high speeds, causing its temperature to drop rapidly. Simultaneously, a significant temperature difference exists between the inner wall of the sprue bushing and the molten metal, making it highly susceptible to molten metal adhering and accumulating on the inner wall of the sprue bushing. This not only affects the forming accuracy and surface quality of the casting but also increases the difficulty of mold cleaning and reduces continuous production efficiency.

[0003] To address the issue of material sticking to the sprue bushing, current technologies generally employ a heating sleeve installed on the outside of the sprue bushing. This continuous heating maintains the bushing temperature and slows down the cooling rate of the molten metal. However, existing heating sleeves often use a combination of thermal springs and bolts for fixing, resulting in a cumbersome installation process requiring specialized tools for disassembly and assembly. When the heating component malfunctions and needs repair or replacement, the process is time-consuming, significantly impacting production schedules. Furthermore, existing sprue bushings are typically equipped with a cooling water circulation system to cool and protect the sprue bushing's feed seat, preventing accelerated aging and damage due to prolonged exposure to high-temperature molten metal. However, when disassembling the heating sleeve, operators are prone to forgetting to close the cooling water valve, causing uncontrolled leakage of cooling water onto the mold cavity or electrical components. This can lead to mold corrosion, short circuits, and other problems, increasing production safety hazards and equipment maintenance costs.

[0004] Therefore, the present invention provides a detachable anti-sticking structure for the gate sleeve of a die-casting mold to solve the above problems. Summary of the Invention

[0005] In view of the above situation and to overcome the defects of the prior art, the present invention provides a detachable anti-sticking structure for the sprue sleeve of a die casting mold, so as to solve the problems of cumbersome disassembly and assembly of the sprue sleeve anti-sticking structure in the prior art, and the easy forgetting to close the cooling water valve after disassembly, which leads to leakage.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A detachable anti-sticking structure for a die-casting mold sprue sleeve includes a sprue sleeve inlet seat. A sprue sleeve delivery pipe is fixedly connected to the bottom surface of the sprue sleeve inlet seat. A heating sleeve is slidably connected to the outer surface of the sprue sleeve delivery pipe. An insulation sleeve is fixedly installed inside the heating sleeve. A set of electric heating wires is fixedly installed inside the insulation sleeve. An external power supply is electrically connected to the outer surface of the insulation sleeve. The external power supply penetrates the outer surface of the heating sleeve and extends to the outside of the heating sleeve. A cooling water tank is provided inside the sprue sleeve inlet seat. An inlet pipe and an outlet pipe are provided outside the sprue sleeve inlet seat. Both the inlet pipe and the outlet pipe penetrate the sprue sleeve inlet seat and extend into the cooling water tank. A one-way valve is installed on the inlet pipe, and a drain valve is installed on the outlet pipe. A self-closing mechanism is provided below the drain valve. A tongue plate is fixedly connected to the bottom surface of the sprue sleeve inlet seat. A limit mechanism is provided inside the heating sleeve.

[0007] Preferably, the bottom surface of the gate sleeve delivery pipe is provided with a bottom mating groove, and the inner wall of the heating sleeve is fixedly connected with a bottom mating ring, which is in contact with the bottom mating groove.

[0008] Preferably, the self-closing mechanism includes a connecting column and a second bevel gear. A set of handles is fixedly connected to the outer surface of the hand-tightening disc. The bottom surface of the hand-tightening disc is fixedly connected to the connecting column. A first bevel gear is fixedly connected to the outer surface of the connecting column. The first bevel gear meshes with the second bevel gear. A rotating rod is fixedly connected to the outer surface of the second bevel gear. The outer surface of the rotating rod is rotatably connected to the gate insert seat.

[0009] Preferably, the interior of the sprue insert seat has an interconnected inner mounting groove, a first guide groove, and a second guide groove. A gear is fixedly connected to the outer surface of the rotating rod. A rack is slidably connected inside the first guide groove. The rack meshes with the gear, and the bottom end of the rack abuts against the upper surface of the heating sleeve.

[0010] Preferably, a reset plate is fixedly connected to the outer surface of the rack, the outer surface of the reset plate is slidably connected to the second guide groove, and two first springs are fixedly connected to the upper surface of the reset plate, the top ends of the two first springs being fixedly connected to the inner top wall of the second guide groove.

[0011] Preferably, the limiting mechanism includes a third guide groove and a fourth guide groove, the third guide groove and the fourth guide groove are connected, the outer surface of the tongue insert plate is slidably connected to the third guide groove, the inner wall of the fourth guide groove is slidably connected to a tongue baffle, the outer surface of the tongue baffle is in contact with the tongue insert plate, a pull rod is fixedly connected to the left side of the tongue baffle, and the outer surface of the pull rod is slidably connected to the heating sleeve.

[0012] Preferably, a pull plate is fixedly connected to the left end of the pull rod, and a sliding groove communicating with the third guide groove is opened on the outer surface of the heating sleeve, and the pull plate is slidably connected to the sliding groove.

[0013] Preferably, a second spring is sleeved on the outer surface of the pull rod, and the two ends of the second spring are fixedly connected to the inner sidewall of the fourth guide groove and the outer surface of the tongue baffle, respectively.

[0014] Preferably, the outer surface of the pull plate has a pull opening.

[0015] Preferably, a third spring is fixedly connected to the inner bottom wall of the third guide groove, and a top plate is fixedly connected to the top end of the third spring. The upper surface of the top plate abuts against the tongue insert plate.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention achieves a detachable connection by cooperating the limiting mechanism inside the heating jacket with the tongue insert plate on the bottom surface of the sprue sleeve inlet seat. The heating jacket can be quickly installed and disassembled without special tools. The operation is simple and convenient, which greatly shortens the maintenance and replacement time of the heating components and improves production continuity.

[0017] 2. This invention, by setting a self-closing mechanism, uses the displacement during the installation and removal of the heating jacket to drive the gear and rack transmission, thereby automatically controlling the opening and closing of the drain valve. This completely solves the leakage problem caused by forgetting to close the cooling water valve when removing the heating jacket, avoids damage to the mold and related equipment by the cooling water, and reduces production risks and maintenance costs. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a side sectional view of the present invention; Figure 3 This is a partial cross-sectional view of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of point A in the image; Figure 5 This is a partial cross-sectional view of the gate sleeve insert seat of the present invention; Figure 6 This is a front view of the present invention; Figure 7 For the present invention Figure 6 Enlarged view at point B in the middle; Figure 8 For the present invention Figure 6 Enlarged view of point A in the middle.

[0019] In the diagram: 1. Sprue sleeve feed seat; 2. Sprue sleeve delivery pipe; 3. Heating sleeve; 4. Bottom mating groove; 5. Bottom mating ring; 6. Insulation sleeve; 7. Electric heating wire; 8. External power supply; 9. Cooling water tank; 10. Water inlet pipe; 11. Water inlet check valve; 12. Water outlet pipe; 13. Drain valve; 14. Hand-operated disc; 15. Hand lever; 16. Connecting column; 17. Bevel gear one; 18. Bevel gear two; 19. Rotating rod; 20. Gear; 21. Rack; 22. Reset plate; 23. First spring; 24. Inner mounting groove; 25. First guide groove; 26. Second guide groove; 27. Third guide groove; 28. Fourth guide groove; 29. ​​Tongue insert plate; 30. Pull plate; 31. Pull opening; 32. Pull rod; 33. Tongue baffle; 34. Second spring; 35. Top plate; 36. Third spring. Detailed Implementation

[0020] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0021] A detachable anti-sticking structure for the gating sleeve of a die-casting mold, such as Figure 1 , Figure 2 As shown, the device includes a sprue sleeve inlet seat 1, with a sprue sleeve delivery pipe 2 fixedly connected to the bottom surface of the sprue sleeve inlet seat 1. A heating sleeve 3 is slidably connected to the outer surface of the sprue sleeve delivery pipe 2. An annular bottom fitting groove 4 is formed on the bottom surface of the sprue sleeve delivery pipe 2, and an annular bottom fitting ring 5 is fixedly connected to the inner wall of the heating sleeve 3. When the heating sleeve 3 is fitted over the outside of the sprue sleeve delivery pipe 2, the bottom fitting ring 5 is embedded in the bottom fitting groove 4 and in close contact with it, achieving coaxial positioning of the heating sleeve 3 and the sprue sleeve delivery pipe 2, and ensuring uniform heating.

[0022] An insulation sleeve 6 is fixedly installed inside the heating jacket 3. The insulation sleeve 6 is made of high-temperature resistant heat-insulating material, which can effectively reduce heat loss and improve energy utilization. A set of electric heating wires 7 is fixedly installed inside the insulation sleeve 6. The electric heating wires 7 are spirally and evenly wound on the inner wall of the insulation sleeve 6, which can provide all-round heating of the pouring pipe 2. An external power supply 8 is electrically connected to the outer surface of the electric heating wires 7. The external power supply 8 passes through the outer surface of the heating jacket 3 and extends to the outside of the heating jacket 3, for connecting to an external power supply system to provide power to the electric heating wires 7.

[0023] An annular cooling water tank 9 is provided inside the sprue insert 1, surrounding the central through hole of the sprue insert 1, allowing for sufficient heat exchange with the sprue insert 1. An inlet pipe 10 and an outlet pipe 12 are provided on the outside of the sprue insert 1, both penetrating the side wall of the sprue insert 1 and extending into the interior of the cooling water tank 9. A one-way valve 11 is installed on the inlet pipe 10 to prevent backflow of cooling water; a drain valve 13 is installed on the outlet pipe 12 to control the discharge flow rate and on / off state of the cooling water. A self-closing mechanism is provided below the drain valve 13 to automatically close the drain valve 13 when the heating jacket 3 is disassembled.

[0024] like Figure 3 , Figure 4 , Figure 5 As shown, the self-closing mechanism includes a first bevel gear 17 and a second bevel gear 18 that mesh with each other. A set of evenly distributed grips 15 are fixedly connected to the outer surface of the hand-tightening disc 14, allowing the operator to manually rotate the hand-tightening disc 14 for manual control. The bottom surface of the hand-tightening disc 14 is fixedly connected to the top of the connecting post 16. The bottom end of the connecting post 16 passes through the gate, fits into the upper surface of the material seat 1, and extends into the interior of the inner mounting groove 24. A first bevel gear 17 is fixedly connected to the outer surface of the connecting post 16. The first bevel gear 17 meshes perpendicularly with the second bevel gear 18. A rotating rod 19 is fixedly connected to the center of the second bevel gear 18, and the two ends of the rotating rod 19 are rotatably connected to the front and rear inner walls of the inner mounting groove 24, respectively.

[0025] The interior of the sprue insert 1 has an interconnected inner mounting groove 24, a first guide groove 25, and a second guide groove 26. A gear 20 is fixedly connected to the outer surface of the rotating rod 19, and the gear 20 is located directly above the first guide groove 25. A rack 21 is slidably connected inside the first guide groove 25. The teeth of the rack 21 mesh with the gear 20. The bottom end of the rack 21 penetrates the bottom wall of the first guide groove 25 and extends to the bottom of the sprue insert 1, and the bottom end of the rack 21 abuts against the upper surface of the heating sleeve 3.

[0026] A reset plate 22 is fixedly connected to the outer surface of the rack 21. The reset plate 22 is located inside the second guide groove 26, and its outer surface is slidably connected to the inner wall of the second guide groove 26. Two first springs 23 are fixedly connected to the upper surface of the reset plate 22, and the top ends of both first springs 23 are fixedly connected to the inner top wall of the second guide groove 26. When the heating sleeve 3 is installed in place, the first springs 23 are in a compressed state, providing a downward reset force for the rack 21.

[0027] like Figure 6 , Figure 7 , Figure 8As shown, a tongue plate 29 is fixedly connected to the bottom surface of the gate sleeve inlet seat 1. A limiting mechanism is provided inside the heating sleeve 3 to axially limit the tongue plate 29, thereby achieving a fixed connection between the heating sleeve 3 and the gate sleeve inlet seat 1. The limiting mechanism includes a third guide groove 27 and a fourth guide groove 28. The third guide groove 27 is formed on the upper surface of the heating sleeve 3, and the fourth guide groove 28 is formed on one side of the third guide groove 27, and the third guide groove 27 and the fourth guide groove 28 are interconnected.

[0028] The outer surface of the pull plate 30 is slidably connected to the third guide groove 27. The outer surface of the heating sleeve 3 is provided with a sliding groove. The pull plate 30 is slidably connected to the sliding groove and can be completely hidden therein. The outer surface of the pull plate 30 is provided with a pull opening 31, which makes it convenient for the operator to hold and pull the pull plate 30 with their fingers.

[0029] A tongue baffle 33 is slidably connected to the inner wall of the fourth guide groove 28. One end of the tongue baffle 33 extends into the interior of the third guide groove 27, and the outer surface of the tongue baffle 33 contacts the tongue insert 29. A pull rod 32 is fixedly connected to the left side of the tongue baffle 33. The left end of the pull rod 32 passes through the left side wall of the fourth guide groove 28 and extends to the outside of the heating sleeve 3. The left end of the pull rod 32 is fixedly connected to the right side of the pull plate 30.

[0030] A second spring 34 is fitted onto the outer surface of the pull rod 32. The second spring 34 is located inside the fourth guide groove 28, and its two ends are fixedly connected to the inner side wall of the fourth guide groove 28 and the outer surface of the tongue baffle 33, respectively. When the tongue baffle 29 is not inserted, the second spring 34 is in its natural state, and the end of the tongue baffle 33 extends into the third guide groove 27.

[0031] A third spring 36 is fixedly connected to the inner bottom wall of the third guide groove 27, and a top plate 35 is fixedly connected to the top of the third spring 36. The outer surface of the top plate 35 is slidably connected to the inner wall of the third guide groove 27. When the heating sleeve 3 is fixedly connected to the gate insert seat 1, the tongue plate 29 is inserted into the interior of the third guide groove 27, and the upper surface of the top plate 35 abuts against the bottom surface of the tongue plate 29, and the third spring 36 is in a compressed state.

[0032] Working principle: During normal production, molten metal is fed into the mold cavity through the central through-hole of the sprue bushing feed seat 1, and then injected into the mold cavity after passing through the sprue bushing delivery pipe 2. An external power supply 8 is connected to an external power supply system to provide power to the electric heating wire 7. The electric heating wire 7 generates heat, which is transferred to the sprue bushing delivery pipe 2 through the insulation sleeve 6, continuously heating and maintaining the temperature of the sprue bushing delivery pipe 2 above the solidification point of the molten metal. This effectively slows down the cooling rate of the molten metal during high-speed transport and prevents the molten metal from sticking to the inner wall of the sprue bushing delivery pipe 2 due to excessively low temperature.

[0033] Meanwhile, the outlet pipe of the external water pump is connected to the inlet pipe 10. Cooling water enters the interior of the cooling water tank 9 through the inlet pipe 10 and the inlet check valve 11. The cooling water circulates in the cooling water tank 9, carrying away the heat absorbed by the sprue sleeve 1 and preventing it from aging and being damaged due to long-term exposure to high-temperature molten metal. The hot water after heat exchange is discharged through the outlet pipe 12 and the drain valve 13, forming a complete cooling water circulation system.

[0034] When the heating jacket 3 needs to be disassembled for maintenance or replacement, first disconnect the external power supply 8 from the external power supply system. Then, use your fingers to hold the pull plate 30 on the pull opening 31 and pull it to the left. The pull plate 30 drives the pull rod 32 and the tongue baffle 33 to move synchronously to the left, while compressing the second spring 34. When the tongue baffle 33 is completely out of the third guide groove 27, the axial restriction on the tongue insert 29 is released. At this time, the compressed third spring 36 rebounds upward, driving the top plate 35 to push the tongue insert 29 upward, causing the tongue insert 29 to pop out part of the third guide groove 27, making it convenient for the operator to remove the heating jacket 3 from the sprue sleeve delivery pipe 2.

[0035] As the heating jacket 3 moves downwards and disengages from the sprue sleeve delivery pipe 2, the upper surface of the heating jacket 3 no longer exerts an upward resisting force on the rack 21. At this time, the compressed first spring 23 rebounds downwards, causing the reset plate 22 and the rack 21 to move downwards along the first guide groove 25. When the rack 21 moves downwards, it drives the gear 20 meshing with it to rotate. The gear 20 drives the second bevel gear 18 to rotate through the rotating rod 19. The second bevel gear 18 drives the first bevel gear 17 meshing with it to rotate. The first bevel gear 17 drives the hand-cranked disc 14 to rotate through the connecting column 16, thereby causing the drain valve 13 to automatically close, completely avoiding the problem of cooling water flowing out uncontrollably if the cooling water valve is forgotten to be closed when disassembling the heating jacket 3. Finally, the connection between the inlet pipe 10 and the outlet pipe 12 and the external water pipe is disconnected, completing the disassembly of the heating jacket 3.

[0036] When the heating sleeve 3 needs to be installed, first connect the inlet pipe 10 and outlet pipe 12 to the external water pipe. Then, align the heating sleeve 3 with the gate sleeve delivery pipe 2 and push it upwards, so that the gate sleeve delivery pipe 2 is inserted into the interior of the heating sleeve 3 until the bottom mating ring 5 is in tight contact with the bottom mating groove 4. At this time, the tongue plate 29 is inserted into the interior of the third guide groove 27, and the bottom surface of the tongue plate 29 is in contact with the upper surface of the top plate 35. Continue to push the heating sleeve 3 upwards, and the tongue plate 29 presses down on the top plate 35 and compresses the third spring 36. At the same time, the side of the tongue plate 29 pushes the tongue baffle 33 to the left, and the tongue baffle 33 drives the pull rod 32 and the pull plate 30 to the left, while compressing the second spring 34. When the tongue insert plate 29 moves to below the tongue baffle 33, the second spring 34 rebounds to the right, causing the tongue baffle 33 to move to the right and reset. The upper surface of the tongue baffle 33 contacts the lower surface of the tongue insert plate 29, axially limiting the tongue insert plate 29 and achieving a firm connection between the heating sleeve 3 and the gate sleeve inlet seat 1.

[0037] As the heating jacket 3 moves upward, its upper surface pushes up the rack 21, causing it to move upward along the first guide groove 25. Simultaneously, this moves the reset plate 22 upward and compresses the first spring 23. As the rack 21 moves upward, it drives the gear 20 meshing with it to rotate in the opposite direction. The gear 20, through the rotating rod 19, drives the second bevel gear 18 to rotate in the opposite direction. The second bevel gear 18 then drives the first bevel gear 17 and the hand-operated disc 14 to rotate in the opposite direction, thereby automatically opening the drain valve 13 and restoring the cooling water circulation system to normal operation. Finally, the external power supply 8 is connected to the external power supply system, and the system can be put into normal production use.

[0038] It should be noted that in the description of this invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0040] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A detachable anti-sticking structure for a die-casting mold sprue sleeve, comprising a sprue sleeve inlet seat (1), characterized in that, The bottom surface of the sprue sleeve inlet seat (1) is fixedly connected to the sprue sleeve delivery pipe (2). The outer surface of the sprue sleeve delivery pipe (2) is slidably connected to the heating sleeve (3). The heating sleeve (3) is fixedly installed inside the heating sleeve (3). A set of electric heating wires (7) is fixedly installed inside the heating sleeve (6). The outer surface of the heating sleeve (6) is electrically connected to an external power supply (8). The external power supply (8) penetrates the outer surface of the heating sleeve (3) and extends to the outside of the heating sleeve (3). A cooling water tank (9) is opened inside the sprue sleeve inlet seat (1). The outside of the gate insert base (1) is provided with a water inlet pipe (10) and a water outlet pipe (12). The water inlet pipe (10) and the water outlet pipe (12) both pass through the gate insert base (1) and extend into the interior of the cooling water tank (9). A one-way valve (11) is installed on the water inlet pipe (10), and a drain valve (13) is installed on the water outlet pipe (12). A self-closing mechanism is provided below the drain valve (13). A tongue insert plate (29) is fixedly connected to the bottom surface of the gate insert base (1). A limit mechanism is provided inside the heating sleeve (3).

2. The detachable anti-sticking structure for a die-casting mold gating sleeve according to claim 1, characterized in that, The bottom surface of the pouring sleeve delivery pipe (2) is provided with a bottom mating groove (4), and the inner wall of the heating sleeve (3) is fixedly connected with a bottom mating ring (5), which is in contact with the bottom mating groove (4).

3. The detachable anti-sticking structure for a die-casting mold gate sleeve according to claim 1, characterized in that, The self-closing mechanism includes a connecting column (16) and a second bevel gear (18). A set of handles (15) are fixedly connected to the outer surface of the hand-tightening plate (14). The bottom surface of the hand-tightening plate (14) is fixedly connected to the connecting column (16). A first bevel gear (17) is fixedly connected to the outer surface of the connecting column (16). The first bevel gear (17) meshes with the second bevel gear (18). A rotating rod (19) is fixedly connected to the outer surface of the second bevel gear (18). The outer surface of the rotating rod (19) is rotatably connected to the gate insert seat (1).

4. The detachable anti-sticking structure for a die-casting mold gate sleeve according to claim 3, characterized in that, The interior of the sprue insert (1) is provided with an internal mounting groove (24), a first guide groove (25) and a second guide groove (26) that are interconnected. A gear (20) is fixedly connected to the outer surface of the rotating rod (19). A rack (21) is slidably connected inside the first guide groove (25). The rack (21) meshes with the gear (20). The bottom end of the rack (21) abuts against the upper surface of the heating sleeve (3).

5. The detachable anti-sticking structure for a die-casting mold gate sleeve according to claim 4, characterized in that, A reset plate (22) is fixedly connected to the outer surface of the rack (21). The outer surface of the reset plate (22) is slidably connected to the second guide groove (26). Two first springs (23) are fixedly connected to the upper surface of the reset plate (22). The top ends of the two first springs (23) are fixedly connected to the inner top wall of the second guide groove (26).

6. The detachable anti-sticking structure for a die-casting mold gating sleeve according to claim 1, characterized in that, The limiting mechanism includes a third guide groove (27) and a fourth guide groove (28). The third guide groove (27) and the fourth guide groove (28) are connected. The outer surface of the tongue insert plate (29) is slidably connected to the third guide groove (27). The inner wall of the fourth guide groove (28) is slidably connected to a tongue baffle (33). The outer surface of the tongue baffle (33) is in contact with the tongue insert plate (29). The left side of the tongue baffle (33) is fixedly connected to a pull rod (32). The outer surface of the pull rod (32) is slidably connected to the heating sleeve (3).

7. The detachable anti-sticking structure for a die-casting mold gate sleeve according to claim 6, characterized in that, The left end of the pull rod (32) is fixedly connected to the pull plate (30), and the outer surface of the heating sleeve (3) is provided with a sliding groove that communicates with the third guide groove (27). The pull plate (30) is slidably connected to the sliding groove.

8. The detachable anti-sticking structure for a die-casting mold gate sleeve according to claim 6, characterized in that, The outer surface of the pull rod (32) is fitted with a second spring (34), and the two ends of the second spring (34) are fixedly connected to the inner side wall of the fourth guide groove (28) and the outer surface of the tongue baffle (33), respectively.

9. A detachable anti-sticking structure for a die-casting mold gating sleeve according to claim 6, characterized in that, The outer surface of the pull plate (30) is provided with a pull opening (31).

10. A detachable anti-sticking structure for a die-casting mold gate sleeve according to claim 6, characterized in that, The inner bottom wall of the third guide groove (27) is fixedly connected to a third spring (36), and the top end of the third spring (36) is fixedly connected to a top plate (35). The upper surface of the top plate (35) abuts against the tongue insert plate (29).

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