A squeeze casting die for a rolling bearing cage

Abstract

The present invention relates to the field of casting technology and discloses an extrusion casting mold for a rolling bearing cage, comprising: an upper mold, a lower mold, a cooling auxiliary mechanism and a coolant circulation mechanism; a downwardly concave forming groove body is provided at the top of the lower mold, and the forming groove body includes a main body forming part and a plurality of splicing column forming parts. By setting the cooling auxiliary mechanism, the present invention can be used to control the cooling rate of the splicing columns. In the initial stage of cooling, the heat conduction of the splicing columns is reduced by the gap between the isolation sleeve and the splicing column forming part to slow down the heat dissipation rate of the splicing columns. In the middle stage of cooling, the heat dissipation fins are driven to gradually extend into the gap, and the heat dissipation fins are used as a heat conduction medium to gradually increase the heat dissipation rate of the splicing columns, which is beneficial to making the cooling rate of the splicing columns close to that of other positions of the cage, thereby avoiding the problem of large difference in the cooling degree between the splicing columns and other positions.

Description

Technical Field

[0001] The invention relates to the technical field of casting, and more particularly to an extrusion casting mold for a rolling bearing retainer. Background Art

[0002] Compared with ordinary bearings, rolling bearings can not only withstand radial loads at high speeds, but also bidirectional axial loads due to their deep groove raceways and excellent fit between the raceways and the steel balls. They are commonly used in motors, automobile wheels, and home appliances. The cage is a pipe component of the rolling bearing. It is mainly located between the rollers of the bearing and serves to separate and guide the rolling elements. Most of them use two half cages and are fixed by rivets.

[0003] At present, in the production and manufacturing process of rolling bearing cages, a casting process is generally used for cages with complex structural shapes. In the prior art, in order to solve the problem of fatigue fracture and rivet head falling off caused by fretting wear caused by loose rivets, such as Figures 9 to 11 As shown, a self-riveting structure retainer appears, which replaces the rivet head by arranging multiple integrated splicing columns on the butt end face of one half of the retainer. After the two retainers are butt-jointed, pressure is applied to the top of the rivet head to deform it, thereby forming an integrated rivet structure.

[0004] However, when using traditional casting molds to cast this special cage with splicing columns, the butt-jointed cylinder has a relatively large surface area to volume ratio due to its small size, and is easier to dissipate heat than other larger parts during the cooling process. When the degree of cooling of the splicing column is different from that of other positions, it will cause internal stress in the splicing column, making it easy to deform, thereby affecting the dimensional accuracy of the splicing column. In addition, the existence of internal stress may also cause the cylinder to crack during use, reducing the reliability of the bearing cage. Therefore, there is an urgent need for a casting mold that can be used for rolling bearing cages with integrated splicing columns. Summary of the invention

[0005] The purpose of the present invention is to provide an extrusion casting mold for a rolling bearing cage to solve the above-mentioned technical problems.

[0006] The present invention solves the above-mentioned technical problems through the following technical solutions:

[0007] The present invention provides an extrusion casting die for a rolling bearing cage, comprising: an upper die, a lower die, a cooling auxiliary mechanism and a cooling liquid circulation mechanism;

[0008] The top of the lower mold is provided with a downwardly concave forming groove body, the forming groove body includes a main body forming part and a plurality of splicing column forming parts, and the plurality of splicing column forming parts are evenly distributed in a circumferential manner on the bottom wall of the main body forming part. The bottom of the lower mold is provided with a cooling groove body;

[0009] The cooling auxiliary mechanism is arranged in the cooling groove body. The cooling auxiliary mechanism includes a rotation driving component and a plurality of cooling components with the same number as the splicing column forming parts. The cooling component includes an isolation sleeve, eight heat dissipation fins, a suction component and a telescopic driving component. The isolation sleeve is sleeved on the outside of the splicing column forming part, and its outside is fixed to the inner side wall of the cooling groove body. A gap is left between the inner side of the isolation sleeve and the outside of the splicing column forming part. The plurality of heat dissipation fins are evenly and slidably installed on the outside of the isolation sleeve. The telescopic driving component is connected to the eight heat dissipation fins at the same time and is used to drive the eight heat dissipation fins to slide linearly synchronously relative to the isolation sleeve. The rotation driving component is connected to a plurality of telescopic driving components and is used to drive the plurality of telescopic driving components to move simultaneously. The suction component is slidably arranged at the bottom end of the isolation sleeve and is used to pump the coolant in the cooling groove body into or out of the isolation sleeve.

[0010] As a further optimized solution of the present invention, the telescopic driving component includes a rotation driving part and a transmission part. The top of the rotation driving part is slidably connected in cooperation with the bottom ends of the eight heat dissipation fins. The rotation driving part is in transmission connection with the rotation driving component through the transmission part.

[0011] As a further optimized solution of the present invention, the rotation driving part includes a rotation cylinder body. The rotation cylinder body is rotatably sleeved at the bottom end of the isolation sleeve. The top surface of the rotation cylinder body is provided with arc-shaped grooves with the same number as the heat dissipation fins. The bottom parts of the plurality of heat dissipation fins are respectively slidably connected to the plurality of arc-shaped grooves in a one-to-one correspondence.

[0012] As a further optimized solution of the present invention, the transmission part includes a connecting gear ring and an incomplete gear. The connecting gear ring is fixedly installed at the bottom of the rotation cylinder body. One side of the incomplete gear is meshed with the connecting gear ring. The bottom of the incomplete gear is connected to the driving end of the rotation driving component.

[0013] As a further optimized solution of the present invention, the suction component includes a sealing plug and a lifting driving part. The sealing plug is slidably installed at the bottom end of the isolation sleeve. The lifting driving part is fixed to the bottom of the sealing plug and is used to drive the sealing plug to slide up and down along the inner side of the isolation sleeve. The top surface of the sealing plug is provided with a plurality of through gaps adapted to the heat dissipation fins. The bottom of the heat dissipation fin is slidably connected to the upper end of the through gap. One side of the isolation sleeve is communicated with the outside of the lower mold through an exhaust pipe.

[0014] As a further optimized solution of the present invention, the lifting driving part includes a connecting cylinder, a threaded rod and a mating gear. The connecting cylinder is threadedly sleeved outside the threaded rod, and its top end is fixedly connected to the bottom of the sealing plug. The mating gear is fixedly installed at the bottom end of the threaded rod. When the incomplete gear is separated from the connecting tooth ring, one side of it just meshes with the mating gear.

[0015] As a further optimized solution of the present invention, the rotation driving assembly includes a driving motor, a first gear, an internal tooth ring and a second gear with the same number as the cooling assembly. The driving motor is fixedly installed outside the lower mold. The first gear is fixedly installed at the rotating end of the driving motor. A plurality of the second gears are respectively fixedly corresponding to a plurality of incomplete gears. The internal tooth ring is rotatably installed at the bottom of the lower mold, and its inner ring surface meshes with a plurality of the second gears.

[0016] As a further optimized solution of the present invention, a plurality of heat dissipation grooves are linearly and evenly distributed on one side of the heat sink. The heat sink is a rectangular copper sheet, and the number of the heat sinks is eight.

[0017] As a further optimized solution of the present invention, the splicing column forming part is a cylindrical groove body, and the number of the splicing column forming parts is three.

[0018] As a further optimized solution of the present invention, an annular forming groove adapted to the forming groove body is provided at the bottom of the upper mold, and a plurality of inlet pipes are provided on the top of the upper mold in a circumferential distribution.

[0019] The beneficial effects of the present invention are as follows:

[0020] By providing a cooling auxiliary mechanism, the present invention can be used to control the cooling speed of the splicing column. In the initial stage of cooling, the heat conduction of the splicing column is reduced by the gap between the isolation sleeve and the splicing column forming part, so as to slow down the heat dissipation speed of the splicing column. In the middle stage of cooling, the heat sink is driven to gradually extend into the gap, and the heat sink is used as a heat conduction medium to gradually increase the heat dissipation speed of the splicing column, which is beneficial to making the cooling speed of the splicing column close to that of other positions of the cage, thereby avoiding problems such as deviation of the dimensional accuracy of the splicing column and cracking of the splicing column during subsequent use due to the large difference in the cooling degree between the splicing column and other positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of an extrusion casting mold for a rolling bearing cage provided by the present invention;

[0022] Figure 2 is an exploded view of an extrusion casting mold for a rolling bearing cage provided by the present invention;

[0023] Figure 3 It is a schematic structural diagram of the interior of the lower die in an extrusion casting die for a rolling bearing cage provided by the present invention;

[0024] Figure 4 It is a sectional view of an extrusion casting die for a rolling bearing cage provided by the present invention;

[0025] Figure 5 is the present invention Figure 4 A partial enlarged schematic view at position A in the present invention;

[0026] Figure 6 It is a sectional view of a cooling assembly in an extrusion casting die for a rolling bearing cage provided by the present invention;

[0027] Figure 7 It is a schematic structural diagram between a rotating cylinder and heat dissipation fins in an extrusion casting die for a rolling bearing cage provided by the present invention;

[0028] Figure 8 It is a schematic structural diagram of a rotary drive assembly in an extrusion casting die for a rolling bearing cage provided by the present invention;

[0029] Figure 9 is a schematic structural diagram of an existing rolling bearing cage;

[0030] Figure 10 is an exploded view of an existing rolling bearing cage;

[0031] Figure 11 is half of a rolling bearing cage cast by the casting die of the present invention.

[0032] In the figure: 1. Upper die; 2. Lower die; 3. Cooling auxiliary mechanism; 31. Rotary drive assembly; 311. Drive motor; 312. First gear; 313. Inner gear ring; 314. Second gear; 32. Cooling assembly; 321. Isolation sleeve; 322. Heat dissipation fins; 323. Rotating cylinder; 324. Arc groove; 325. Connecting gear ring; 326. Incomplete gear; 327. Sealing plug; 328. Through gap; 329. Connecting cylinder; 3210. Threaded rod; 3211. Matching gear; 3212. Heat dissipation groove; 3213. Exhaust pipe; 4. Coolant circulation mechanism; 5. Forming groove body; 51. Main body forming part; 52. Splicing column forming part; 6. Cooling groove body; 7. Annular forming groove; 8. Introduction pipe; 9. Splicing shaft; 10. Cage body. Detailed implementation manners

[0033] Reference will now be made to example embodiments to discuss the subject matter described herein. It should be understood that discussing these embodiments is only to enable those skilled in the art to better understand and thus implement the subject matter described herein. Without departing from the scope of protection of the content of this specification, changes can be made to the functions and arrangements of the elements discussed. Each example can omit, substitute, or add various processes or components as needed. Additionally, the features described relative to some examples can also be combined in other examples.

[0034] Please refer to Figures 1 to 5 , an extrusion casting mold for a rolling bearing cage, comprising: an upper mold 1, a lower mold 2, a coolant circulation mechanism 4, and a cooling assistance mechanism 3. Among them, a downwardly concave forming groove 5 is provided at the top of the lower mold 2. The forming groove 5 includes a main body forming portion 51 and three splicing column forming portions 52. The three splicing column forming portions 52 are evenly distributed in a circumferential manner on the bottom wall of the main body forming portion 51. A cooling groove 6 is provided at the bottom of the lower mold 2. An annular forming groove 7 adapted to the forming groove 5 is provided at the bottom of the upper mold 1. A plurality of circumferentially distributed inlet pipes 8 are provided at the top of the upper mold 1. The pouring liquid is evenly introduced into the forming groove 5 through the inlet pipes 8. The upper mold 1 and the lower mold 2 are spliced and fixed together by a plurality of fastening bolts. The coolant circulation mechanism 4 is connected to the cooling groove 6 through a pipeline, enabling the coolant to circulate in the cooling groove 6 and rapidly cool the cage in the forming groove 5.

[0035] Please refer to Figures 3 to 7 , the cooling assistance mechanism 3 is arranged in the cooling groove 6. The cooling assistance mechanism 3 includes a rotation driving component 31 and cooling components 32 having the same number as the splicing column forming portions 52. The cooling component 32 includes an isolation sleeve 321, eight heat dissipation fins 322, a suction member, and a telescopic driving member. The isolation sleeve 321 is sleeved outside the splicing column forming portion 52, and its outer side is fixed to the inner side wall of the cooling groove 6. A gap is left between the inner side of the isolation sleeve 321 and the outer side of the splicing column forming portion 52. The eight heat dissipation fins 322 are evenly slidably mounted on the outer side of the isolation sleeve 321. Four heat dissipation grooves 3212 are linearly and evenly distributed on one side of the heat dissipation fin 322. The heat dissipation fin 322 is a rectangular copper sheet. The telescopic driving member is connected to the eight heat dissipation fins 322 simultaneously and is used to drive the eight heat dissipation fins 322 to linearly slide synchronously relative to the isolation sleeve 321. The rotation driving component 31 is connected to a plurality of telescopic driving members and is used to drive the plurality of telescopic driving members to move simultaneously. The suction member is slidably arranged at the bottom end of the isolation sleeve 321 and is used to pump the coolant in the cooling groove 6 into or out of the isolation sleeve 321.

[0036] It should be noted that when the above casting mold is used to cast the cage, after the pouring liquid enters the inside of the forming groove body 5, it starts to cool. The coolant rotates through the operation of the coolant rotation mechanism, and the coolant circulates inside the forming groove body 5, thereby cooling the cage. During the cooling process, due to the presence of the isolation sleeve 321, the coolant is separated from the splicing column forming part 52, so that the coolant cannot come into contact with the splicing column forming part 52 temporarily. At the same time, there is a gap between the isolation sleeve 321 and the splicing column forming part 52, which further slows down the heat conduction from the splicing column forming part 52 to the isolation sleeve 321. In this way, the coolant can first cool other positions of the cage, and the heat dissipation speed of the splicing column position is slowed down. After the temperature of other positions drops to a preset value, the heat dissipation effect of the splicing column is gradually increased. Specifically, driven by the rotation drive assembly 31, three connected telescopic drive parts can be driven to move synchronously, so that the telescopic drive parts can first drive the eight corresponding radiating fins 322 to extend into the isolation sleeve 321 together. After extending to the preset length, the rotation drive assembly 31 stops driving. At this time, since the distance between the radiating fin 322 and the splicing column forming part 52 is shortened, the heat at the splicing column forming part 52 can be conducted into the coolant through the radiating fin 322, so as to increase the cooling speed of the splicing column. By sequentially shortening the distance between the radiating fin 322 and the splicing column forming part 52, the cooling speed of the splicing column is gradually increased, and the cooling speed of the splicing column is gradually slowed down in this way, so that the cooling speed of the splicing column is similar to that of other positions of the cage. In this way, it is possible to avoid problems such as deviation of the dimensional accuracy of the splicing column and cracking of the splicing column during subsequent use due to the large difference in the cooling degree between the splicing column and other positions; when one side of the radiating fin 322 contacts the outer side of the splicing column forming part 52, the heat dissipation effect of the radiating fin 322 is the strongest at this time. However, since the temperature of the splicing column and other positions of the cage is relatively low, and the heat dissipation effect of the splicing column alone is difficult to match the heat dissipation speed of other positions of the cage, the rotation drive assembly 31 is used to drive the suction part to move, and the coolant is pumped into the isolation sleeve 321 to cool the splicing column until the entire cage is completely cooled, and then the coolant is squeezed out of the isolation sleeve 321 by the suction part, and the radiating fin 322 moves to the contracted state.

[0037] Please refer to Figures 5 to 7, the telescopic driving member includes a rotary driving part and a transmission part. The top of the rotary driving part is slidably connected to the bottom ends of eight radiating fins 322, and the rotary driving part is drivingly connected to the rotary driving assembly 31 through the transmission part. The rotary driving part includes a rotary cylinder 323 which is rotatably sleeved on the bottom end of the isolation sleeve 321. The top surface of the rotary cylinder 323 is provided with arc-shaped grooves 324 having the same number as the radiating fins 322. The bottom ends of the eight radiating fins 322 are respectively slidably connected to the eight arc-shaped grooves 324 in one-to-one correspondence. The transmission part includes a connecting gear ring 325 and an incomplete gear 326. The connecting gear ring 325 is fixedly installed at the bottom of the rotary cylinder 323. One side of the incomplete gear 326 meshes with the connecting gear ring 325, and the bottom of the incomplete gear 326 is connected to the driving end of the rotary driving assembly 31.

[0038] It should be noted that when the above telescopic driving member drives the radiating fins 322 to expand and contract, driven by the rotary driving assembly 31, the incomplete gear 326 can be driven to rotate. Under the driving action of the incomplete gear 326, the connecting gear ring 325 synchronously drives the rotary cylinder 323 to rotate, and the arc-shaped grooves 324 drive the radiating fins 322 to linearly slide synchronously, so that the radiating fins 322 gradually extend towards the inside of the isolation sleeve 321. When the rotary cylinder 323 stops rotating, the radiating fins 322 also stop sliding. When the incomplete gear 326 is separated from the connecting gear ring 325, at this time, one side of the radiating fins 322 just slides into contact with the outside of the splicing column forming part 52, and the incomplete gear 326 no longer continues to drive the connecting gear ring 325 to rotate.

[0039] Please refer to Figures 5 to 6 , the suction member includes a sealing plug 327 and a lifting driving part. The sealing plug 327 is slidably installed at the bottom end of the isolation sleeve 321. The lifting driving part is fixed to the bottom of the sealing plug 327 and is used to drive the sealing plug 327 to slide up and down along the inside of the isolation sleeve 321. The top surface of the sealing plug 327 is provided with eight through gaps 328 adapted to the radiating fins 322. The bottom of the radiating fins 322 is slidably connected to the upper end of the through gaps 328. One side of the isolation sleeve 321 is communicated with the outside of the lower mold 2 through an exhaust pipe 3213. The sealing plug 327 can be made of rubber material. When the sealing plug 327 is at the bottom of the isolation sleeve 321, the through gaps 328 are in a closed state, so the bottom end of the isolation sleeve 321 can be sealed. The lifting driving part includes a connecting cylinder 329, a threaded rod 3210 and a mating gear 3211. The connecting cylinder 329 is threadedly sleeved on the outside of the threaded rod 3210, and its top end is fixedly connected to the bottom of the sealing plug 327. The mating gear 3211 is fixedly installed at the bottom end of the threaded rod 3210. When the incomplete gear 326 is separated from the connecting gear ring 325, one side of it just meshes with the mating gear 3211.

[0040] It should be noted that when the cooling water is pumped into the interior of the rotating cylinder 323 by the above-mentioned suction member, at this time, the incomplete gear 326 has been separated from the connecting gear ring 325 and is exactly engaged with the mating gear 3211. Driven continuously by the rotary drive assembly 31, the incomplete gear 326 can drive the mating gear 3211 to rotate, and the threaded rod 3210 rotates together with the mating gear 3211. Since the sealing plug 327 is slidably connected to the bottom of the heat sink 322, the heat sink 322 plays a limiting role on the sealing plug 327. When the threaded rod 3210 rotates, the connecting cylinder 329 and the sealing plug 327 can move upward along the inner side of the isolation sleeve 321 together. Since the sealing plug 327 is provided with a through-gap 328 adapted to the heat sink 322, the sealing plug 327 can move upward along the heat sink 322 without being hindered by the heat sink 322. During the upward movement of the sealing plug 327, the gas at the upper end of the inner side of the isolation sleeve 321 is extruded out of the lower mold 2 through the exhaust pipe 3213, and the coolant quickly enters the isolation sleeve 321 under the suction of the sealing plug 327. When the sealing plug 327 moves upward to contact the inner top wall of the isolation sleeve 321, the rotary drive assembly 31 stops driving. The coolant fills the interior of the isolation sleeve 321 and contacts the outside of the splicing column forming part 52, thereby further cooling the splicing column. When the cooling of the entire cage is completed, the rotary drive assembly 31 drives the incomplete gear 326 to rotate in the reverse direction, so that the sealing plug 327 gradually moves downward and extrudes the coolant from the isolation sleeve 321 until the incomplete gear 326 is separated from the mating gear 3211, and the incomplete gear 326 is engaged with the connecting gear ring 325 again, thereby driving the heat sink 322 to move back to its original position. In this way, when the telescopic drive member is used in cooperation with the rotary drive assembly 31, the heat sink 322 can be driven to perform linear expansion and contraction, and the gradual cooling function of the splicing column can be realized. When the telescopic drive member, the rotary drive assembly 31 and the suction member are used in cooperation, the coolant can automatically enter and exit the isolation sleeve 321 to realize the further cooling function of the splicing column.

[0041] Please refer to Figure 3 and Figure 8 Figure, the rotary drive assembly 31 includes a drive motor 311, a first gear 312, an internal gear ring 313 and second gears 314 having the same number as the cooling assemblies 32. The drive motor 311 is fixedly installed on the outer side of the lower mold 2. The drive motor 311 can be a reduction motor. The first gear 312 is fixedly installed on the rotating end of the drive motor 311. The three second gears 314 are respectively fixedly corresponding to the three incomplete gears 326. The internal gear ring 313 is rotatably installed at the bottom of the lower mold 2, and its inner ring surface is engaged with a plurality of second gears 314.

[0042] It should be noted that when the above-mentioned rotation drive assembly 31 is in use, by rotating the drive motor 311, the first gear 312 can drive the internal gear ring 313 to rotate. The three second gears 314 rotate synchronously under the driving action of the internal gear ring 313, and respectively drive the corresponding incomplete gears 326 to rotate.

[0043] The above embodiments of the specific implementation manner have been described, but this embodiment is not limited to the above specific implementation manner. The above specific implementation manner is only illustrative and not restrictive. Under the inspiration of this embodiment, those of ordinary skill in the art can also make many forms, all of which fall within the protection scope of this embodiment.

Claims

1. An extrusion casting die for a rolling bearing cage, characterized in that, Including: an upper mold (1), a lower mold (2), a cooling auxiliary mechanism (3), and a coolant circulation mechanism (4); a downwardly recessed forming groove body (5) is provided at the top of the lower mold (2), the forming groove body (5) includes a main body forming part (51) and a plurality of splicing column forming parts (52), and a plurality of the splicing column forming parts (52) are evenly distributed in a circumferential manner on the bottom wall of the main body forming part (51), and a cooling groove body (6) is provided at the bottom of the lower mold (2); the cooling auxiliary mechanism (3) is arranged in the cooling groove body (6), the cooling auxiliary mechanism (3) includes a rotation driving assembly (31) and a plurality of cooling assemblies (32) having the same number as the splicing column forming parts (52), the cooling assembly (32) includes an isolation sleeve (321), eight heat dissipation fins (322), a suction member, and a telescopic driving member, the isolation sleeve (321) is sleeved on the outer side of the splicing column forming part (52), and its outer side is fixed to the inner side wall of the cooling groove body (6), a gap is left between the inner side of the isolation sleeve (321) and the outer side of the splicing column forming part (52), a plurality of the heat dissipation fins (322) are evenly and slidably mounted on the outer side of the isolation sleeve (321), the telescopic driving member is connected to the eight heat dissipation fins (322) simultaneously, and is used for driving the eight heat dissipation fins (322) to linearly slide synchronously relative to the isolation sleeve (321), the rotation driving assembly (31) is connected to a plurality of telescopic driving members, and is used for driving the plurality of telescopic driving members to move simultaneously, the suction member is slidably arranged at the bottom end of the isolation sleeve (321), and is used for pumping the coolant in the cooling groove body (6) into or out of the isolation sleeve (321).

2. The squeeze casting die for a rolling bearing cage according to claim 1, characterized in that, The telescopic driving member includes a rotation driving part and a transmission part, the top of the rotation driving part is in sliding connection with the bottom ends of the eight heat dissipation fins (322) in a matching manner, and the rotation driving part is in transmission connection with the rotation driving assembly (31) through the transmission part.

3. The squeeze casting die for a rolling bearing cage according to claim 2, wherein, The rotation driving part includes a rotation cylinder body (323), the rotation cylinder body (323) is rotatably sleeved on the bottom end of the isolation sleeve (321), an arc-shaped groove (324) having the same number as the heat dissipation fins (322) is provided on the top surface of the rotation cylinder body (323), and the bottom ends of the plurality of heat dissipation fins (322) are respectively in sliding connection with the plurality of arc-shaped grooves (324) in a one-to-one correspondence manner.

4. The squeeze casting die for a rolling bearing cage according to claim 3, characterized in that, The transmission part includes a connecting gear ring (325) and an incomplete gear (326), the connecting gear ring (325) is fixedly mounted on the bottom of the rotation cylinder body (323), one side of the incomplete gear (326) is meshed with the connecting gear ring (325), and the bottom of the incomplete gear (326) is connected to the driving end of the rotation driving assembly (31).

5. The squeeze casting die for a rolling bearing cage according to claim 4, characterized in that, The suction member includes a sealing plug (327) and a lifting drive portion. The sealing plug (327) is slidably installed at the bottom end of the isolation sleeve (321). The lifting drive portion is fixed to the bottom of the sealing plug (327) and is used to drive the sealing plug (327) to slide up and down along the inner side of the isolation sleeve (321). The top surface of the sealing plug (327) is provided with a number of through gaps (328) adapted to the heat sinks (322). The bottom of the heat sinks (322) is slidably connected to the upper end of the through gaps (328). One side of the isolation sleeve (321) is communicated with the outside of the lower mold (2) through an exhaust pipe (3213).

6. The squeeze casting die for a rolling bearing cage according to claim 5, characterized in that, The lifting drive portion includes a connecting cylinder (329), a threaded rod (3210), and a mating gear (3211). The connecting cylinder (329) is threadedly sleeved on the outside of the threaded rod (3210), and its top end is fixedly connected to the bottom of the sealing plug (327). The mating gear (3211) is fixedly installed at the bottom end of the threaded rod (3210). When the incomplete gear (326) is separated from the connecting tooth ring (325), one side thereof just meshes with the mating gear (3211).

7. The squeeze casting die for a rolling bearing cage according to claim 6, characterized in that, The rotary drive assembly (31) includes a drive motor (311), a first gear (312), an internal gear ring (313), and a number of second gears (314) equal to the number of the cooling assemblies (32). The drive motor (311) is fixedly installed on the outside of the lower mold (2). The first gear (312) is fixedly installed on the rotating end of the drive motor (311). A number of the second gears (314) are respectively fixedly corresponding to a number of incomplete gears (326). The internal gear ring (313) is rotatably installed at the bottom of the lower mold (2), and its inner ring surface meshes with a number of the second gears (314).

8. A squeeze casting die for a rolling bearing cage according to claim 1, characterized in that, One side of the heat sinks (322) is provided with a number of heat dissipation grooves (3212) linearly and evenly distributed. The heat sinks (322) are rectangular copper sheets, and the number of the heat sinks (322) is set to eight.

9. The squeeze casting die for a rolling bearing cage according to claim 1, characterized in that, The splicing post forming portion (52) is a cylindrical groove body, and the number of the splicing post forming portions (52) is set to three.

10. The squeeze casting die for a rolling bearing cage according to claim 1, characterized in that, The bottom of the upper mold (1) is provided with an annular forming groove (7) adapted to the forming groove body (5). The top of the upper mold (1) is provided with a number of inlet pipes (8) distributed in a circle.

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