CN220050264U - Profile saw cutting power head - Google Patents

Abstract

The utility model discloses a profile sawing power head, wherein a supporting shaft sleeve is arranged in a main shaft box, a driving main shaft is rotatably arranged in the supporting shaft sleeve through a rotating bearing group, sealing devices are arranged at two ends of the supporting shaft sleeve, a cooling loop communicated with a cooling cavity is arranged in the supporting shaft sleeve, a circulating liquid inlet and a circulating liquid outlet are formed in the main shaft box, a liquid inlet pipeline is connected to the circulating liquid inlet, a liquid outlet pipeline is connected to the circulating liquid outlet, a suction pump and a radiator are fixed on the main shaft box, the liquid outlet pipeline is communicated with an inlet of the suction pump, an outlet of the suction pump is communicated with a cooling inlet of the radiator, and a cooling outlet of the radiator is communicated with the liquid inlet pipeline; the sawing power head can cool the rotating bearing set when the sawing assembly cuts the profile, helps to cool and lubricate the driving main shaft and the rotating bearing set, and improves the use effect.

Description

Profile saw cutting power head

Technical Field

The utility model relates to the technical field of profile machining, in particular to a profile sawing power head.

Background

The sawing power head is equipment for performing online cutting on a section by utilizing a rapidly rotating saw blade, generally comprises a motor, a belt, a saw blade assembly, a machine body and the like, when the sawing power head is used for cutting, the rotating speed of the motor is adjusted so as to change the rotating speed of the saw blade assembly, thereby being suitable for cutting different materials, when steel is cut, the cutting speed is reduced so as to cut, and when aluminum is cut, the lower cutting speed is not used for finishing the cutting of the aluminum, so that the cutting speed is required to be improved, and because the higher rotating speed is required to be continuously maintained, the driving main shaft connected with the saw blade assembly is continuously rotated to generate higher temperature, effective heat dissipation is not performed, and the cutting effect and the use safety are affected when the sawing power head is continuously used; and in the high-speed rotation process, after contacting with the aluminum material, the high-speed rotating saw blade is subjected to resistance to generate axial shaking, so that the cut aluminum material cutting surface is uneven, the cutting quality is influenced, the saw blade is easy to wear and accelerate, and potential safety hazards are easy to generate.

Disclosure of Invention

The technical problems to be solved by the utility model are as follows: a section bar saw cuts unit head, this saw cuts unit head can effectively cool off the rolling bearing group when saw cuts the subassembly to the section bar, helps the heat dissipation and the lubrication of drive main shaft, rolling bearing group, improves result of use.

In order to solve the technical problems, the technical scheme of the utility model is as follows: the utility model provides a section bar saw cuts unit head, includes the headstock, the headstock is installed on unable adjustment base, be provided with cooling chamber in the headstock, bear and be equipped with cooling lubrication liquid in the cooling chamber, the drive main shaft is installed to the headstock internal rotation, the drive main shaft passes through the drive power device drive and rotates, the one end of drive main shaft runs through the headstock exposes and is fixed with saw cutting the subassembly, be equipped with the support axle sleeve in the headstock, the drive main shaft passes through the rotation bearing group and rotates and install in the support axle sleeve, the support axle sleeve both ends all are equipped with sealing device, be equipped with the cooling circuit with cooling chamber intercommunication in the support axle sleeve, circulation inlet and circulation liquid outlet have been seted up on the headstock, be connected with the feed liquor pipeline on the circulation liquid outlet, be connected with out the liquid pipeline on the headstock, be fixed with suction pump and radiator on the headstock, the inlet intercommunication of liquid pipeline and suction pump, the export and radiator's cooling inlet intercommunication.

As a preferable scheme, saw cutting assembly includes cutting saw bit, supports saw cutting base and external fixation saw bit clamp plate, support saw cutting base and external fixation saw bit clamp plate fixed mounting clamp the fixed with cutting saw bit on the drive spindle, headstock side is fixed with the protection housing that protects the cutting saw bit, be equipped with the stable structure that makes cutting saw bit steady rotation in the protection housing.

As a preferred solution, the protective casing comprises an outer cover plate and an inner casing, the inner casing is mounted on the side of the headstock, and the outer cover plate is hinged to the inner casing and is fixed by a locking structure.

As a preferred scheme, the stabilizing structure comprises an inner airflow stabilizing plate fixed on the inner housing and an outer airflow stabilizing plate fixed on the outer cover plate, the inner airflow stabilizing plate and the outer airflow stabilizing plate are identical in structure and are respectively located on the inner side and the outer side of the cutting saw blade, an air inlet and a plurality of flow grooves communicated with the air inlet are formed in the plate surface of the inner airflow stabilizing plate, and the air inlet is connected with an air inlet nozzle.

As a preferable scheme, the oil nozzle for cooling the cutting saw blade is arranged on the protective housing.

As a preferable scheme, a circulating flow inlet and a circulating flow outlet are formed in the supporting shaft sleeve, a flow gap is formed between the supporting shaft sleeve and the driving main shaft, the circulating flow inlet and the circulating flow outlet are communicated with the flow gap, and the circulating flow inlet, the circulating flow outlet, the flow gap and the gap of the rotating bearing group form the cooling loop together.

As a preferable scheme, the rotating bearing group comprises a plurality of rotating bearings arranged on the driving main shaft, the number of the circulating flow inlet holes and the circulating flow outlet holes is a plurality of pairs, and one rotating bearing is arranged between each pair of circulating flow inlet holes and circulating flow outlet holes.

As a preferred solution, the rolling bearing set further includes a first outboard bearing and a second outboard bearing located at both ends of the drive spindle, the circulating flow outlet or circulating flow inlet is provided between the first outboard bearing and the adjacent rolling bearing, the side plates of the headstock corresponding to the first outboard bearing and the second outboard bearing are respectively provided with a first plate-on-circulating passage and a second plate-on-circulating passage, the first plate-on-circulating passage communicates the cooling chamber with the flow gap outside the first outboard bearing, and the second plate-on-circulating passage communicates the cooling chamber with the flow gap outside the second outboard bearing.

As a preferable scheme, the sealing devices at the two ends of the supporting shaft sleeve are identical in structure, the sealing device close to the first outer side bearing comprises a sealing ring, a sealing pressing plate is arranged at the outer side of the sealing ring, the sealing ring and the sealing pressing plate are fixed on the side surface of the main shaft box through fasteners, a sealing piece is arranged between an inner hole of the sealing ring and the driving main shaft, a connecting channel is arranged on the sealing ring, and the connecting channel connects and communicates the circulating channel on the first plate with the flowing gap at the outer side of the first outer side bearing; and a limit protrusion matched with the first outside bearing is arranged on the surface, close to the first outside bearing, of the sealing ring.

As a preferable scheme, an outer spacer bush and an inner spacer bush which are in contact with the end surfaces of the rotary bearings are arranged at intervals among the rotary bearings, the outer spacer bush is arranged on the inner wall of the supporting shaft sleeve, the inner spacer bush is arranged on the outer wall of the driving main shaft, and communication through holes which are in one-to-one correspondence with the circulating flow inlet holes and the circulating flow outlet holes are formed in the outer spacer bush.

After the technical scheme is adopted, the utility model has the following effects: the profile sawing power head comprises a main shaft box, wherein the main shaft box is arranged on a fixed base, a cooling cavity is formed in the main shaft box, cooling lubricating liquid is supported in the cooling cavity, a driving main shaft is rotatably arranged in the main shaft box, the driving main shaft is driven to rotate through a driving power device, one end of the driving main shaft penetrates through the main shaft box to be exposed and is fixedly provided with a sawing assembly, a supporting shaft sleeve is arranged in the main shaft box, the driving main shaft is rotatably arranged in the supporting shaft sleeve through a rotating bearing group, sealing devices are arranged at two ends of the supporting shaft sleeve, a cooling loop communicated with the cooling cavity is arranged in the supporting shaft sleeve, a circulating liquid inlet and a circulating liquid outlet are formed in the main shaft box, a liquid inlet pipeline is connected to the circulating liquid outlet, a liquid suction pump and a radiator are fixedly arranged on the main shaft box, the liquid outlet pipeline is communicated with a suction inlet of the pump, an outlet of the suction pump is communicated with a cooling inlet of the radiator, and a cooling outlet of the radiator is communicated with the liquid inlet pipeline; firstly, driving a driving main shaft to rotate through a driving power device, so that a driving assembly starts to work, then a suction pump sucks the cooling cavity through a liquid outlet pipeline, cooling lubricating liquid enters a radiator through the suction pump, then the radiator radiates the entering cooling lubricating liquid, after radiating, the cooling lubricating liquid enters a circulating liquid inlet from a cooling outlet through a liquid inlet pipeline, and then the cooling lubricating liquid in the cooling cavity enters a cooling loop through the pressure of the suction pump, so that the rotating bearing group can be lubricated and cooled, and the circulating cooling is performed; the sawing power head can cool the rotating bearing set when the sawing assembly cuts the profile, helps to drive the heat dissipation and lubrication of the main shaft and the rotating bearing set, and improves the use effect of the sawing assembly.

The sawing assembly comprises a cutting saw blade, a supporting sawing base and an external fixed saw blade pressing plate, wherein the supporting sawing base and the external fixed saw blade pressing plate are fixedly arranged on a driving spindle to clamp and fix the cutting saw blade, a protective housing for protecting the cutting saw blade is fixed on the side surface of the spindle box, and a stable structure for enabling the cutting saw blade to stably rotate is arranged in the protective housing; the cutting saw blade is fixed in a clamping mode, the structure is simple, the operation is convenient, the cover shell is protected, and the use safety is improved.

The protection housing comprises an outer cover plate and an inner housing, wherein the inner housing is arranged on the side surface of the spindle box, and the outer cover plate is hinged with the inner housing and is fixed through a locking structure; the outer cover plate turns over around the hinge, so that the maintenance, assembly and disassembly of the cutting saw blade are facilitated, and the installation convenience is improved.

The stabilizing structure comprises an inner airflow stabilizing plate fixed on the inner housing and an outer airflow stabilizing plate fixed on the outer cover plate, the inner airflow stabilizing plate and the outer airflow stabilizing plate have the same structure and are respectively positioned on the inner side and the outer side of the cutting saw blade, an air inlet and a plurality of flow grooves communicated with the air inlet are formed in the plate surface of the inner airflow stabilizing plate, and the air inlet is connected with an air inlet nozzle; the cutting saw blade between outer air flow stabilizing plate and the inner air flow stabilizing plate can be connected through the air inlet to blow and stabilize, meanwhile, the impacted wind flows and disperses through the flow grooves on the inner air flow stabilizing plate and the outer air flow stabilizing plate, and meanwhile, part of heat is taken away, so that the stability is effectively improved, the cutting saw blade can be prevented from shaking when cutting, and the section quality of a cut section bar is improved.

And as the oil nozzle for cooling the cutting saw blade is arranged on the protective housing, the cutting saw blade can be effectively assisted in cooling during high-speed rotary cutting, and the cutting efficiency is improved.

The circulating flow inlet and the circulating flow outlet are formed in the supporting shaft sleeve, a flow gap is formed between the supporting shaft sleeve and the driving main shaft, the circulating flow inlet and the circulating flow outlet are communicated with the flow gap, and the circulating flow inlet, the circulating flow outlet, the flow gap and the gap of the rotating bearing group form the cooling loop together; therefore, the cooling lubricating liquid can enter from the circulating flow hole and flow out from the circulating flow outlet hole through the rotating bearing group, and the accuracy of circulating flow cooling can be effectively ensured.

The rotary bearing group comprises a plurality of rotary bearings arranged on the driving main shaft, the number of the circulating flow holes and the circulating flow outlet holes is a plurality of pairs, and one rotary bearing is arranged between each pair of circulating flow holes and the circulating flow outlet holes; therefore, when the cooling lubricating liquid enters the circulating flow hole, the cooling lubricating liquid only passes through one rotating bearing, so that the flow resistance can be effectively reduced, the cooling effect is good, and the efficiency is improved.

The rotating bearing group further comprises a first outer bearing and a second outer bearing which are positioned at two ends of the driving main shaft, the circulating flow outlet holes or circulating flow inlet holes are formed between the first outer bearing and the adjacent rotating bearing and between the second outer bearing and the adjacent rotating bearing, a first plate upper circulating channel and a second plate upper circulating channel are respectively arranged on the side plates corresponding to the main shaft box and the first outer bearing and the second outer bearing, the first plate upper circulating channel is used for communicating the cooling chamber with the flow gap outside the first outer bearing, and the second plate upper circulating channel is used for communicating the cooling chamber with the flow gap outside the second outer bearing; therefore, after the cooling lubricating liquid enters the flow gap, the first outer bearing and the second outer bearing can be cooled and lubricated, and meanwhile, the first outer bearing and the second outer bearing are arranged at two ends of the driving main shaft, so that the driving main shaft can rotate more stably and reliably, and good cooling effect is ensured.

The sealing devices at the two ends of the supporting shaft sleeve are identical in structure, the sealing devices close to the first outer side bearing comprise sealing rings, sealing pressing plates are arranged at the outer sides of the sealing rings, the sealing rings and the sealing pressing plates are fixed on the side surfaces of the main shaft box through fasteners, sealing pieces are arranged between inner holes of the sealing rings and the driving main shaft, connecting channels are arranged on the sealing rings, and the connecting channels connect and communicate the circulating channels on the first plate with the flowing gaps at the outer sides of the first outer side bearing; a limiting protrusion matched with the first outside bearing is arranged on the plate surface, close to the first outside bearing, of the sealing ring; because the first outside bearing and the second outside bearing are arranged at the two ends of the driving main shaft, the cooling lubricating liquid can effectively pass through the first outside bearing and the second outside bearing for convenience, so that the cooling lubricating liquid is required to be effectively prevented from leaking outside the main shaft box and the supporting shaft sleeve by sealing through the sealing rings, and the connecting channels on the sealing rings can also be communicated between the main shaft box and the supporting shaft sleeve; the spacing protrusion can help the effective axial support of first outside bearing in the rotation course to the installation of convenient structure.

Because the outer spacer bush and the inner spacer bush which are in contact with the end surfaces of the rotary bearings are arranged at intervals among the rotary bearings, the outer spacer bush is arranged on the inner wall of the supporting shaft sleeve, the inner spacer bush is arranged on the outer wall of the driving main shaft, and the outer spacer bush is provided with communication through holes which are in one-to-one correspondence with the circulating flow inlet holes and the circulating flow outlet holes; on one hand, the bearing is effectively axially positioned during installation and rotation, and on the other hand, the bearing is prevented from axially shaking during rotation, so that the rotation stability of the driving main shaft is ensured, and the entering of cooling and lubricating liquid is not hindered.

Drawings

The utility model will be further described with reference to the drawings and examples.

FIG. 1 is a perspective view of an embodiment of the present utility model;

FIG. 2 is a view of the structure at the drive spindle of an embodiment of the present utility model;

FIG. 3 is a structural view of the inner shell of an embodiment of the present utility model;

FIG. 4 is a schematic view of a cooling chamber according to an embodiment of the present utility model;

FIG. 5 is a schematic view of the construction of an outer spacer according to an embodiment of the present utility model;

FIG. 6 is an enlarged view of a portion of a seal assembly according to an embodiment of the present utility model;

FIG. 7 is a schematic illustration of a stabilizing structure according to an embodiment of the present utility model;

in the accompanying drawings: 1. a cooling chamber; 2. driving a main shaft; 3. a support shaft sleeve; 4. a circulating liquid inlet; 5. a circulation liquid outlet; 6. cutting the saw blade; 7. a heat sink; 8. a spindle box; 9. a flow gap; 10. a fixed base; 11. a circulation flow inlet; 12. a seal ring; 13. a limit protrusion; 14. a sealing pressing plate; 15. a seal; 16. a first on-board circulation channel; 17. a cooling inlet; 18. a cooling outlet; 19. a heat radiation fan; 20. a liquid pump; 21. a liquid pumping port; 22. an outer spacer; 23. an inner spacer; 24. a communication through hole; 25. an annular sink; 26. a first outboard bearing; 27. a second outboard bearing; 28. a first inboard bearing; 29. a second inboard bearing; 30. a liquid outlet; 31. a liquid injection port; 32. a support base; 33. a second plate circulation channel; 34. a circulating flow outlet; 35. a linking channel; 36. a driving motor; 37. a support plane; 38. a driving shaft; 39. a driving pulley; 40. a driven pulley; 41. a transmission belt; 42. supporting the sawing base; 43. an oil nozzle; 44. a flow channel; 45. an outer fixed saw blade pressing plate; 46. an outer cover plate; 47. an inner housing; 48. a notch; 49. a hinge; 50. an inner air flow stabilizing plate; 51. an outer air flow stabilizing plate; 52. an air inlet; 53. and (5) installing the through holes.

Detailed Description

The present utility model will be described in further detail with reference to the following examples.

As shown in fig. 1 to 7, a section sawing power head comprises a spindle box 8, the spindle box 8 is installed on a fixed base 10, a cooling cavity 1 is arranged in the spindle box 8, cooling lubricating liquid is contained in the cooling cavity 1, a driving spindle 2 is rotationally installed in the spindle box 8, the driving spindle 2 is driven to rotate through a driving power device, one end of the driving spindle 2 penetrates through the spindle box 8 to expose and is fixedly provided with a sawing component, a supporting shaft sleeve 3 is arranged in the spindle box 8, the driving spindle 2 is rotationally installed in the supporting shaft sleeve 3 through a rotating bearing group, sealing devices are arranged at two ends of the supporting shaft sleeve 3, a cooling loop communicated with the cooling cavity 1 is arranged in the supporting shaft sleeve 3, a circulating liquid inlet 4 and a circulating liquid outlet 5 are formed in the spindle box 8, a liquid inlet pipeline is connected to the circulating liquid outlet 5, a suction pump and a radiator 7 are fixedly arranged on the spindle box 8, the liquid outlet pipeline is communicated with an inlet of the suction pump, and an outlet of the suction pump is communicated with the cooling liquid radiator 7, and a cooling radiator is communicated with the cooling liquid inlet 7.

In this embodiment, the fixing base 10 is installed on a fixing platform, so that the profile sawing power head can be installed, the driving power device comprises a driving motor 36, a supporting seat 32 is fixedly installed on the spindle box 8 through threads, two supporting planes 37 are arranged on the supporting seat 32, one supporting plane 37 is located above the supporting seat 32 and is used for supporting the suction pump and the radiator 7, the other supporting plane 37 is fixedly installed on the rear side of the spindle box 8, the driving motor 36 is convenient to install, the driving motor 36 and the driving spindle 2 are driven through a driving belt 41, a driving shaft 38 is arranged on the driving motor 36, a driving belt pulley 39 is arranged on the driving shaft 38, a driven belt pulley 40 is arranged on the driving spindle 2, the driving belt pulley 39 and the driven belt pulley 40 are connected through the driving belt 41, and the diameter of the driving belt pulley 39 is larger than that of the driven belt pulley 40, so that when the rotation speed of the driving belt pulley 39 is increased, the rotation speed of the driving spindle 2 is further increased, and the chip cutting speed is increased.

As shown in fig. 2, the sawing assembly comprises a cutting saw blade 6, a supporting sawing base 42 and an external fixed saw blade pressing plate 45, wherein the supporting sawing base 42 and the external fixed saw blade pressing plate 45 are fixedly installed on a driving spindle 2 to clamp and fix the cutting saw blade 6, a protective cover shell for protecting the cutting saw blade 6 is fixed on the side surface of the spindle box 8, and a stable structure for enabling the cutting saw blade 6 to stably rotate is arranged in the protective cover shell; the supporting saw cutting base 42 is fixedly connected with the driving main shaft 2 firstly, and the supporting saw cutting base 42 is provided with a raised table top, so that the table top is effectively contacted with the cutting saw blade 6, the condition that the contact surface is too many to generate unstable contact is reduced, the external fixing saw blade pressing plate 45 passes through a central hole on the external fixing saw blade pressing plate 45 through a screw to be connected with the driving main shaft 2, and the cutting saw blade 6 is clamped, so that the use effect during cutting is effectively ensured, the structure is simple, the operation is convenient, the use safety is improved through the protecting cover shell.

Further, the protective casing comprises an outer cover plate 46 and an inner casing 47, the inner casing 47 is arranged on the side surface of the spindle box 8, and the outer cover plate 46 is hinged with the inner casing 47 and is fixed through a locking structure; the notch 48 for conveniently exposing the support sawing base 42 is arranged on the inner cover shell 47, the inner cover shell 47 is required to be installed on the side face of the spindle box 8, so that the support sawing base 42 is conveniently installed by conveniently penetrating through the notch 48, the outer cover plate 46 can be turned around the hinge, the hinge is connected in a hinge 49 mode, the hinge 49 is installed above the outer cover plate 46 and the inner cover shell 47, the outer cover plate 46 is turned upwards, accordingly, the cutting saw blade 6 is convenient to assemble, disassemble and maintain, and installation convenience is improved, the locking structure comprises threaded holes formed in the outer cover plate 46 and the inner cover shell 47, and the outer cover plate 46 and the inner cover shell 47 are mutually installed and fixed by penetrating the threaded holes through screws.

As shown in fig. 3 and 7, the stabilizing structure includes an inner airflow stabilizing plate 50 fixed on the inner housing 47 and an outer airflow stabilizing plate 51 fixed on the outer cover 46, the inner airflow stabilizing plate 50 and the outer airflow stabilizing plate 51 have the same structure and are respectively located on the inner side and the outer side of the cutting saw blade 6, an air inlet 52 and a plurality of flow grooves 44 communicated with the air inlet 52 are arranged on the plate surface of the inner airflow stabilizing plate 50, the air inlet 52 is connected with an air inlet nozzle, the outer airflow stabilizing plate 51 is also provided with a corresponding air inlet 52 and a corresponding flow groove 44, the corresponding air inlet 52 is also connected with an air inlet nozzle, the outer airflow stabilizing plate 51 and the inner airflow stabilizing plate 50 are located on two sides of the cutting saw blade 6 and have a certain distance from the cutting saw blade 6, the air inlet nozzle is connected with the air inlet 52 for blowing, the air flows from the two ends of the cutting saw blade 6, so that the two ends of the cutting saw blade 6 are stressed uniformly, the stability of the cutting saw blade 6 is ensured, the section bar 6 can be prevented from shaking during cutting, the section bar after cutting can be improved, and the section bar can also take away heat from the cutting blade 6 along with the flow grooves 44.

Further, the oil nozzle 43 for cooling the cutting saw blade 6 is arranged on the protective cover, and the oil nozzle 43 is positioned above the cutting saw blade 6, so that the outer cover plate 46 and the inner cover shell 47 are provided with the mounting through holes 53 for conveniently mounting the oil nozzle 43, and the cutting saw blade 6 can be accurately cooled.

In this embodiment, a pipe is arranged in the radiator 7, the pipe is placed corresponding to the heat dissipation fins of the radiator 7, the heat dissipation fins are made of materials convenient for heat conduction, the heat of the cooling lubricating liquid in the pipe can be better transferred to the heat dissipation fins, the heat can reach the heat dissipation fins by pumping the cooling lubricating liquid to be cooled into the pipe, then the heat on the fins is blown by the heat dissipation fan 19, so that the heat dissipation is effectively achieved, the heat dissipation fan 19 can better help to dissipate the heat, and the efficiency is improved; the heat sink 7 is a commercially available structure and is therefore not described in detail herein.

As shown in fig. 1, a circulation flow hole 11 and a circulation flow outlet hole 34 are formed in the support shaft sleeve 3, a flow gap 9 is formed between the support shaft sleeve 3 and the drive main shaft 2, the circulation flow hole 11 and the circulation flow outlet hole 34 are communicated with the flow gap 9, and the circulation flow hole 11, the circulation flow outlet hole 34, the flow gap 9 and the gap of the rotating bearing set form the cooling circuit together; this ensures that the cooling lubricant can enter from the circulation flow hole 11, pass through the rolling bearing set, and flow out from the circulation flow outlet hole 34, and effectively ensures the accuracy of circulation flow cooling.

Further, the rotating bearing group comprises a plurality of rotating bearings arranged on the driving main shaft 2, the number of the circulating flow inlet holes 11 and the circulating flow outlet holes 34 is a plurality of pairs, and one rotating bearing is arranged between each pair of circulating flow inlet holes 11 and circulating flow outlet holes 34; therefore, when the cooling lubricating liquid enters the circulating flow hole 11, the cooling lubricating liquid only passes through one rotating bearing, so that the flow resistance can be effectively reduced, the cooling effect is good, the efficiency is improved, the rotating bearings can be uniformly distributed, and the rotation of the driving main shaft 2 is stable.

As shown in fig. 2, the rolling bearing set further includes a first outboard bearing 26 and a second outboard bearing 27 at both ends of the drive main shaft 2, the circulating flow outlet 34 or the circulating flow inlet 11 is provided between the first outboard bearing 26 and the adjacent rolling bearing, and between the second outboard bearing 27 and the adjacent rolling bearing, the main shaft box 8 and the side plates corresponding to the first outboard bearing 26 and the second outboard bearing 27 are provided with a first on-plate circulating passage 16 and a second on-plate circulating passage 33, respectively, the first on-plate circulating passage 16 communicates the cooling chamber 1 with the flow gap 9 outside the first outboard bearing 26, and the second on-plate circulating passage 33 communicates the cooling chamber 1 with the flow gap 9 outside the second outboard bearing 27; since four rolling bearings are provided on the drive shaft 2 and are symmetrically installed near both ends of the drive shaft 2, such that a first inner bearing 28 is provided on one side of the first outer bearing 26 and a second inner bearing 29 is provided on one side of the second outer bearing 27, four circulating flow outlet holes 34 or circulating flow inlet holes 11 are provided on the support boss 3, the first inner bearing 28 is provided between the two circulating flow outlet holes 34 or circulating flow inlet holes 11, the second inner bearing 29 is provided between the two circulating flow outlet holes 34 or circulating flow inlet holes 11, and after communicating with the circulating passages 16 on the first plate and the circulating passages 33 on the second plate, the cooling lubricating fluid can flow through the first outer bearing 26, the first inner bearing 28, the second outer bearing 27 and the second inner bearing 29, and the middle of the adjacent support boss 3 is provided with the two circulating flow inlet holes 11, between the first outside bearing 26 and the first inside bearing 28, between the second outside bearing 27 and the second inside bearing 29 are circulation flow outlet holes 34, the circulation flow outlet holes 34 have a diameter larger than the circulation flow inlet holes 11 and the diameters of the first plate circulation passages 16 and the second plate circulation passages 33, so that when the cooling lubricating fluid enters the cooling chamber 1, the cooling lubricating fluid enters the first plate circulation passages 16 and the second plate circulation passages 33 and the two circulation flow inlet holes 11, respectively, and then passes through the first outside bearing 26 and the first inside bearing 28 from both sides, and finally flows out of the two circulation flow outlet holes 34, respectively, the flow of the cooling lubricating fluid is controlled by the pressure difference, so that the rolling bearing can be lubricated and cooled.

As shown in fig. 6, the sealing devices at two ends of the supporting shaft sleeve 3 have the same structure, the sealing device near the first outer side bearing 26 comprises a sealing ring 12, a sealing pressing plate 14 is arranged at the outer side of the sealing ring 12, the sealing ring 12 and the sealing pressing plate 14 are fixed at the side surface of the spindle box 8 through fasteners, a sealing piece 15 is arranged between an inner hole of the sealing ring 12 and the driving spindle 2, a connecting channel 35 is arranged on the sealing ring 12, and the connecting channel 35 connects and communicates the circulating channel 16 on the first plate with the flowing gap 9 at the outer side of the first outer side bearing 26; since the first outboard bearing 26 and the second outboard bearing 27 are located at both ends of the drive spindle 2, the first on-plate circulation channel 16 and the second on-plate circulation channel 33 cannot be directly communicated with the first outboard bearing 26 and the second outboard bearing 27, so communication is effectively assisted by the engagement channel 35 on the seal ring 12, and the seal pressure plate 14 and the seal 15 can be sealed with ensured accuracy in use, while also ensuring that the drive spindle 2 is rotationally stable and does not shake in rotation.

Further, a limiting protrusion 13 matched with the first outer side bearing 26 is arranged on the plate surface, close to the first outer side bearing 26, of the sealing ring 12; the plate surface of the sealing ring 12, which is close to the second outer side bearing 27, is also provided with a limit protrusion 13 matched with the first outer side bearing 26, so that when the rotating bearing is installed, effective positioning is performed, and the rotating bearing can be effectively propped against when the main shaft 2 is driven to rotate, and the stability is improved.

As shown in fig. 5 and 6, an outer spacer 22 and an inner spacer 23 which are in contact with the end surfaces of the rotary bearings are arranged at intervals between the rotary bearings, the outer spacer 22 is arranged on the inner wall of the supporting shaft sleeve 3, the inner spacer 23 is arranged on the outer wall of the driving main shaft 2, and the outer spacer 22 is provided with communication through holes 24 which are in one-to-one correspondence with the circulating flow inlet holes 11 and the circulating flow outlet holes 34; on the one hand, the axial positioning of the rotating bearing is effectively assisted when the rotating bearing is installed and rotated, on the other hand, the rotating bearing is matched with the limiting protrusion 13 in the rotating process, so that the rotating stability of the driving main shaft 2 is guaranteed, the cooling lubricating liquid is not prevented from entering, the widths of the outer spacer 22 and the inner spacer 23 between the first inner bearing 28 and the second inner bearing 29 are larger than those of the outer spacer 22 and the inner spacer 23 which are positioned on two sides, and the rotating bearing is effectively supported and the resistance of the cooling lubricating liquid entering the flowing gap 9 is reduced.

Further, the outer spacer 22 is provided with a plurality of annular sinking grooves 25, and the number of the communication through holes 24 is increased and the communication through holes are located in the annular sinking grooves 25, so that the pressure of the cooling lubricating fluid entering the flow gap 9 can be effectively reduced, the cooling lubricating fluid entering from the circulating flow holes can enter from different communication through holes 24, and simultaneously, the pressure of the cooling lubricating fluid can be effectively reduced when the cooling lubricating fluid is discharged from the flow gap 9, and two annular sinking grooves 25 are formed in the outer spacer 22 between the first inner bearing 28 and the second inner bearing 29.

Of course, it is also possible to adopt another scheme, a circulation flow hole 11 or a circulation flow outlet hole 34 is provided on the support shaft sleeve 3, a flow gap 9 is provided between the support shaft sleeve 3 and the driving spindle 2, the circulation flow hole 11 or the circulation flow outlet hole 34 are all communicated with the flow gap 9, a first plate circulation channel 16 and a second plate circulation channel 33 are respectively provided on the side plates on two sides of the spindle box 8, the first plate circulation channel 16 communicates the cooling chamber 1 with the flow gap 9, the second plate circulation channel 33 communicates the cooling chamber 1 with the flow gap 9, and the circulation flow hole 11 or the circulation flow outlet hole 34, the flow gap 9, and the gap of the rotating bearing set, the first plate circulation channel 16 and the second plate circulation channel 33 together form the cooling circuit; the circulation flow outlet holes 34 or the circulation flow inlet holes 11 are provided between the first inner bearing 28 and the second inner bearing 29, and the circulation flow outlet holes 34 are provided in two numbers, corresponding to the first plate circulation channel 16 and the second plate circulation channel 33, respectively, so that when the circulation flow outlet holes 34 are provided, the first plate circulation channel 16 and the second plate circulation channel 33 are inlet holes, whereas the first plate circulation channel 16 and the second plate circulation channel 33 are outlet holes, the cooling lubricating liquid in the cooling chamber 1 enters the flow gap 9 from the circulation flow inlet holes 11 or the first plate circulation channel 16 and the second plate circulation channel 33, passes through the first outer bearing 26, the first inner bearing 28, the second outer bearing 27 and the second inner bearing 29, respectively, and flows out from the first plate circulation channel 16, the second plate circulation channel 33 or the circulation flow outlet holes 34, so that the cooling lubricating liquid can flow through the respective rolling bearings, thereby effectively cooling and lubricating the cooling.

As shown in fig. 1, the suction pump comprises a liquid suction pump 20, a liquid suction port 21 is arranged at a liquid suction end of the liquid suction pump 20, one end of the liquid suction port 21 is connected with the liquid outlet pipeline, and the other end of the liquid suction port 21 is connected with the cooling inlet 17; because the cooling and lubricating liquid in the cooling cavity 1 needs to be circularly cooled, the pumping of the liquid pump 20 can provide flowing power, the cooling and lubricating liquid can also conveniently enter the circulating flow hole 11 after entering the cooling cavity 1, the radiator 7 and the liquid pump 20 are always in a connection state, and the cooling inlet 17 and the cooling outlet 18 on the radiator 7 can be replaced.

In this embodiment, a liquid outlet 30 for conveniently discharging the cooling lubricant and a liquid injection port 31 for conveniently injecting the cooling lubricant are provided in the cooling chamber 1, and the liquid outlet 30 and the liquid injection port 31 are plugged by threads; the screw plugging is quick and convenient, the efficiency is improved, after the connection of the liquid outlet pipeline and the liquid inlet pipeline is finished, the cooling lubricating liquid is injected, so that the cooling lubricating liquid can be ensured to be in the liquid outlet pipeline and the liquid inlet pipeline, circulation is formed, the liquid outlet pipeline and the liquid inlet pipeline can be cooled circularly, the liquid injection port 31 is positioned at the upper half part of the spindle box 8, and the liquid discharge port 30 is positioned at the lower half part of the spindle box 8.

The working principle of the embodiment is as follows: firstly, a driving motor 36 is transmitted to a driven belt pulley 40 through a driving belt pulley 39 and a transmission belt 41, then the driven belt pulley 40 drives a driving main shaft 2 to rotate, so that a cutting saw blade 6 is driven to rotate for cutting, then an air inlet pipe is communicated through air inlet nozzles on an inner air flow stabilizing plate 50 and an outer air flow stabilizing plate 51 on an inner housing 47 and an outer cover 46, air inlet 52 blows air from two ends of the cutting saw blade 6, and two ends of the cutting saw blade 6 are uniformly stressed to rotate; when the cutting saw blade 6 rotates, the liquid suction pump 20 is operated, the cooling and lubricating liquid in the cooling cavity 1 is pumped by the liquid outlet pipeline, the cooling and lubricating liquid enters the radiator 7 for air cooling, then enters the cooling cavity 1 from the liquid inlet pipeline, liquid starts to enter the first plate circulating channel 16 and the second plate circulating channel 33 on two sides of the cooling cavity 1, the circulating flow hole 11 also starts to enter the liquid inlet, the cooling and lubricating liquid enters the flowing gap 9 through the connecting channel 35 and the communicating through hole 24, flows through the first outer side bearing 26 and the first inner side bearing 28 from the outer side direction middle of the first outer side bearing 26 and the first inner side bearing 28, the second outer side bearing 27 and the second inner side bearing 29 are the same, and finally flows out from the circulating flow outlet 34 in a circulating way.

The sawing power head of the embodiment can be used for sawing nonferrous light metal materials such as aluminum bars, aluminum profiles and the like, and can also be used for sawing plastic pipes.

The above examples are merely illustrative of the preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model, and various modifications and adaptations of the technical solution of the present utility model should and are intended to fall within the scope of the present utility model as defined in the claims.

Claims (10)

1. The utility model provides a section bar saw cuts unit head, includes the headstock, the headstock is installed on unable adjustment base, be provided with cooling cavity in the headstock, bear and have cooling lubricant in the cooling cavity, the drive main shaft is installed to the headstock internal rotation, the drive main shaft passes through the drive power device drive and rotates, the one end of drive main shaft runs through the headstock exposes and is fixed with saw cutting the subassembly, its characterized in that: the novel cooling device is characterized in that a supporting shaft sleeve is arranged in the main shaft box, the driving main shaft is rotatably arranged in the supporting shaft sleeve through a rotating bearing group, sealing devices are arranged at two ends of the supporting shaft sleeve, a cooling loop communicated with a cooling cavity is arranged in the supporting shaft sleeve, a circulating liquid inlet and a circulating liquid outlet are formed in the main shaft box, a liquid inlet pipeline is connected to the circulating liquid inlet, a liquid outlet pipeline is connected to the circulating liquid outlet, a suction pump and a radiator are fixed on the main shaft box, the liquid outlet pipeline is communicated with an inlet of the suction pump, an outlet of the suction pump is communicated with a cooling inlet of the radiator, and a cooling outlet of the radiator is communicated with the liquid inlet pipeline.

2. A profile sawing power head as claimed in claim 1, characterized in that: the sawing assembly comprises a cutting saw blade, a supporting sawing base and an external fixed saw blade pressing plate, the supporting sawing base and the external fixed saw blade pressing plate are fixedly installed on a driving spindle to clamp and fix the cutting saw blade, a protection housing for protecting the cutting saw blade is fixed on the side face of the spindle box, and a stable structure for enabling the cutting saw blade to stably rotate is arranged in the protection housing.

3. A profile sawing power head as claimed in claim 2, characterized in that: the protection housing comprises an outer cover plate and an inner housing, the inner housing is arranged on the side face of the spindle box, and the outer cover plate is hinged with the inner housing and fixed through a locking structure.

4. A profile sawing power head as claimed in claim 3, characterized in that: the stabilizing structure comprises an inner airflow stabilizing plate fixed on the inner housing and an outer airflow stabilizing plate fixed on the outer cover plate, the inner airflow stabilizing plate and the outer airflow stabilizing plate are identical in structure and are respectively located on the inner side and the outer side of the cutting saw blade, an air inlet and a plurality of flow grooves communicated with the air inlet are formed in the plate surface of the inner airflow stabilizing plate, and the air inlet is connected with an air inlet nozzle.

5. A profile sawing power head as claimed in claim 4, characterized in that: and the protective housing is provided with an oil nozzle for cooling the cutting saw blade.

6. A profile sawing power head as claimed in any one of claims 1 to 5, characterized in that: the cooling device comprises a support shaft sleeve, and is characterized in that a circulating flow inlet hole and a circulating flow outlet hole are formed in the support shaft sleeve, a flow gap is formed between the support shaft sleeve and a driving main shaft, the circulating flow inlet hole and the circulating flow outlet hole are communicated with the flow gap, and the circulating flow inlet hole, the circulating flow outlet hole, the flow gap and the gap of a rotating bearing set form the cooling loop together.

7. A profile sawing power head as claimed in claim 6, characterized in that: the rotary bearing group comprises a plurality of rotary bearings arranged on the driving main shaft, the number of the circulating flow inlet holes and the circulating flow outlet holes is multiple, and one rotary bearing is arranged between each pair of circulating flow inlet holes and each pair of circulating flow outlet holes.

8. A profile sawing power head as claimed in claim 7, characterized in that: the rotating bearing group further comprises a first outer bearing and a second outer bearing which are positioned at two ends of the driving main shaft, the circulating flow outlet holes or circulating flow inlet holes are formed between the first outer bearing and the adjacent rotating bearing and between the second outer bearing and the adjacent rotating bearing, a first plate circulating channel and a second plate circulating channel are respectively arranged on side plates corresponding to the main shaft box and the first outer bearing and the second outer bearing, the first plate circulating channel is used for communicating the cooling chamber with the flow gap outside the first outer bearing, and the second plate circulating channel is used for communicating the cooling chamber with the flow gap outside the second outer bearing.

9. A profile sawing power head as claimed in claim 8, characterized in that: the sealing devices at two ends of the supporting shaft sleeve are identical in structure, the sealing device close to the first outer side bearing comprises a sealing ring, a sealing pressing plate is arranged at the outer side of the sealing ring, the sealing ring and the sealing pressing plate are fixed on the side face of the main shaft box through fasteners, a sealing piece is arranged between an inner hole of the sealing ring and the driving main shaft, a connecting channel is arranged on the sealing ring, and the connecting channel connects and communicates the circulating channel on the first plate with the flowing gap at the outer side of the first outer side bearing; and a limit protrusion matched with the first outside bearing is arranged on the surface, close to the first outside bearing, of the sealing ring.

10. A profile sawing power head as claimed in claim 9, characterized in that: the interval department between each rolling bearing all installs outer spacer and interior spacer with rolling bearing terminal surface contact, outer spacer is installed on the inner wall of support axle sleeve, interior spacer is installed on the outer wall of drive main shaft, outer spacer has seted up the intercommunication through-hole with circulation flow inlet and circulation flow outlet one-to-one.