CN115503135A

CN115503135A - Roller shaft assembly, cutting assembly and wire cutting machine

Info

Publication number: CN115503135A
Application number: CN202211210239.2A
Authority: CN
Inventors: 张璐; 于云飞; 孙承政; 张艾贞
Original assignee: Qingdao Gaoce Technology Co Ltd
Current assignee: Qingdao Gaoce Technology Co Ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2022-12-23

Abstract

The invention relates to the technical field of wire cutting machines, and particularly provides a roller shaft assembly, a cutting assembly and a wire cutting machine. The application aims at solving the problems that the temperature of the roller shaft is increased and the quality of a cutting material is reduced in the cutting process. To this end, the roller shaft assembly of the present application includes: roll shaft and axial locking's pull rod, insert in the first shaft hole of roll shaft and establish the pull rod, set up first passageway in the pull rod and with inlet and the liquid outlet of first passageway intercommunication, and there is the clearance and regard as the second passageway between pull rod and the first shaft hole, make cutting fluid among the cutting fluid feeding device can flow into in the first passageway through the inlet, the rethread liquid outlet flows into the second passageway, cutting fluid in the second passageway flows back to cutting fluid feeding device again, cool off to the roll shaft with this circulation, reduce the temperature of cutting in-process roll shaft, thereby reduce the heat altered shape that the roll shaft produced when high-speed cutting, improve the cutting quality of cutting material, avoid the problem that the diamond wire appears the broken string.

Description

Roller shaft assembly, cutting assembly and wire cutting machine

Technical Field

The invention relates to the field of wire cutting machines, and particularly provides a roller shaft assembly, a cutting assembly and a wire cutting machine.

Background

The diamond wire cutting technology has the advantages of high sheet yield, high cutting efficiency, low material loss, small environmental pollution and the like, and is gradually replacing the old mortar wire cutting technology in the field of cutting of high-hardness and brittle materials.

When the diamond wire cutting machine works, the diamond wire is driven by at least two roll shafts to move repeatedly to cut a fed material to be cut. However, as the cutting progresses, the temperature of the roll shaft gradually increases, so that the thermal deformation of the roll shaft increases, and the increase in thermal deformation of the roll shaft causes a decrease in the cutting accuracy of the diamond wire cutting machine, a decrease in the quality of the cut material, and even a problem of wire breakage.

Accordingly, there is a need in the art for a new solution to the above problems.

Disclosure of Invention

In order to solve at least one problem among the prior art, for solve the problem that the roller temperature increases and leads to cutting material quality to reduce among the cutting process, this application provides a roller subassembly, roller subassembly includes:

the roller shaft is provided with a first shaft hole;

the pull rod is used for axially locking the roll shaft, at least part of the pull rod is inserted into the first shaft hole, a first channel is arranged in the pull rod, and a liquid inlet and a liquid outlet which are communicated with the first channel are respectively arranged on the pull rod; a gap exists between the outer wall of the pull rod and the inner wall of the first shaft hole and serves as a second channel, the liquid inlet is communicated with the outlet of the cutting liquid supply device, the liquid outlet is communicated with the first end of the second channel, and the second end of the second channel is communicated with the inlet of the cutting liquid supply device.

Through inserting the pull rod of establishing axial locking in the primary shaft hole on the roller, set up first passageway and inlet and the liquid outlet with first passageway intercommunication in the pull rod, and there is the clearance and as the second passageway between the outer wall of pull rod and the inner wall of primary shaft hole, make cutting fluid among the cutting fluid feeding device can flow into in the first passageway through the inlet, the rethread liquid outlet flows into the second passageway, cutting fluid in the second passageway flows back again in the cutting fluid feeding device, can cool off the roller with this circulation, reduce the temperature of roller among the cutting process, thereby reduce the heat altered shape that the roller produced when high-speed cutting, improve the cutting precision of golden wire cut-off machine and the cutting quality of cutting material, can also avoid the problem that the broken string appears in the golden wire.

In a preferred technical solution of the above roller assembly, the roller assembly further includes a first connecting portion, the first connecting portion is connected to a first end of the roller shaft, the first connecting portion is provided with a third channel, a first end of the third channel is communicated with the first channel through the liquid outlet, and a second end of the third channel is communicated with the second channel.

Set up the third passageway through setting up on the first connecting portion and communicate first passageway and second passageway, can carry out auxiliary cooling to first connecting portion, can also cool off the whole of roller simultaneously, improve cooling effect and cooling homogeneity.

In a preferred technical solution of the above roller assembly, the pull rod portion is connected to the third channel, and the liquid outlet is located at a portion where the pull rod is connected to the third channel.

The connecting firmness of the first connecting part and the roll shaft can be increased by connecting the pull rod part to the third channel; through setting up the liquid outlet in the part that the pull rod is connected in the third passageway for the whole overall arrangement of roller subassembly is rationalized more, and the structure change cost is lower.

In a preferred technical solution of the above roller assembly, the first connecting portion is a first bearing box, a first rotating shaft of the first bearing box is connected with the roller shaft, and one end of the first rotating shaft, which is close to the roller shaft, is provided with the third channel.

Through set up the third passageway on first rotation axis, can utilize current bearing box to arrange the third passageway on the one hand, avoid increasing new structural component and improve the structure complexity, on the other hand can also carry out auxiliary cooling to first rotation axis, improves the cooling effect of first bearing box to improve roller assembly's operating stability.

In a preferred technical solution of the above roller assembly, the third channel includes a first pore passage and a second pore passage which are opened at one end of the first rotating shaft close to the roller shaft, the first pore passage is arranged along an axis of the first rotating shaft, a first end of the first pore passage is communicated with the liquid outlet, a second end of the first pore passage is communicated with a first end of the second pore passage, and a second end of the second pore passage is communicated with the second channel.

Through setting up first pore and second pore for in the cutting fluid in the first passageway can flow into first pore through the liquid outlet, the cutting fluid in the first pore flows into second pore and second channel again in proper order and flows back to cutting fluid feeding device, can reduce the high-speed temperature that rotates the in-process production of first rotation axis, reduces the structural change to the roller simultaneously, improves the structural strength of roller.

In a preferred embodiment of the above roller shaft assembly, the third channel further includes a radial hole formed radially on an outer circumferential side of the first rotating shaft, the radial hole connects a second end of the first hole with a first end of the second hole, and an end of the radial hole on the outer circumferential side is blocked; or alternatively

The second aperture is angled such that a first end of the second aperture is in direct communication with a second end of the first aperture.

Through adopting two kinds of modes intercommunication first pore and second pore, one kind is that first pore and second pore pass through radial pore intercommunication, and another kind is that first passageway and second pore are direct to be communicated, and two kinds of intercommunication modes realize the cooling to roller assembly, have increased the practicality of roller assembly.

In a preferred embodiment of the roller axle assembly, an end of the pull rod near the first rotation shaft is screwed with the first end of the first hole, and/or

The liquid outlet is arranged at one end of the pull rod close to the first rotating shaft along the axial direction of the pull rod;

the liquid inlet is arranged at one end, far away from the first rotating shaft, of the pull rod along the axial direction of the pull rod.

The pull rod is connected to the first hole channel in a threaded connection mode, so that the installation is convenient and reliable. In addition, through setting up liquid outlet, inlet at the pull rod both ends for the overall arrangement of roller axle subassembly has more the rationality, and structural change is simple, change with low costs.

In the preferable technical scheme of the roller shaft assembly, the roller shaft assembly further comprises a second connecting part, the second connecting part is connected to one end, far away from the first connecting part, of the roller shaft, a second shaft hole is formed in the second connecting part, the first end of the second shaft hole is communicated with the second end of the second channel, and the second end of the second shaft hole is communicated with the inlet of the cutting fluid supply device.

Set up the second shaft hole on through the second connecting portion, with the import intercommunication of second passageway and cutting fluid feeding device, can carry out auxiliary cooling to the second connecting portion, can also cool off the whole of roller simultaneously, improve cooling effect and cooling uniformity.

In a preferred technical solution of the above roller assembly, a portion of the pull rod, which is far away from the first connecting portion, extends out of the first shaft hole, a portion of the pull rod, which extends out of the first shaft hole, is inserted into the second shaft hole, a gap exists between an inner wall of the second shaft hole and an outer wall of the pull rod, and the gap serves as a fifth channel, a first end of the fifth channel is communicated with a second end of the second channel, and a second end of the fifth channel is communicated with an inlet of the cutting fluid supply device.

By extending the pull rod part into the second shaft hole, a gap is formed between the outer wall of the pull rod and the inner wall of the second shaft hole and serves as a fifth channel, so that the cutting fluid in the second channel can flow back into the cutting fluid supply device through the fifth channel, a cooling circulation path is formed, and cooling of the roller component and auxiliary cooling of the second connecting part are achieved.

In a preferred embodiment of the above roller assembly, the second connecting portion is a second bearing box, a second rotating shaft of the second bearing box is connected to the roller shaft, and the second rotating shaft is provided with the second shaft hole.

Through set up the second shaft hole on the second rotation axis, can utilize current bearing box to arrange the second shaft hole on the one hand, avoid increasing new structural component and improve the structure complexity, on the other hand can also carry out auxiliary cooling to the second rotation axis, improves the cooling effect of second bearing box to improve roller assembly's operating stability.

In the preferable technical scheme of the roller shaft assembly, the roller shaft assembly further comprises a third connecting part, and the third connecting part is connected to one end, far away from the roller shaft, of the second connecting part; and a sixth channel is arranged on the third connecting part, the first end of the sixth channel is communicated with the second end of the fifth channel, and the second end of the sixth channel is communicated with the inlet of the cutting fluid supply device.

The third connecting portion are connected through the one end of keeping away from the roller at the second connecting portion, set up the sixth passageway on the third connecting portion, the first end and the fifth passageway second end intercommunication of sixth passageway, the second end of sixth passageway and cutting fluid feeding device's import intercommunication, make in the cutting fluid can flow into the sixth passageway through the fifth passageway, flow back again to cutting fluid feeding device, can make and form the cooling circulation path in the roller subassembly and realize cooling off roller assembly in the cutting process, reduce and reform transform the degree of difficulty and cost, improve the structural strength of second connecting portion.

In the preferable technical scheme of above-mentioned roller assembly, the third connecting portion are the rotary joint subassembly, the rotary joint subassembly include the overcoat with set up in the third rotation axis in the inner chamber of overcoat, the third rotation axis connect in the second connecting portion are kept away from the one end of roller, be provided with the third shaft hole on the third rotation axis, the sixth passageway includes the third shaft hole with the inner chamber of overcoat, the first end in third shaft hole with the second end intercommunication of fifth passageway, the second end in third shaft hole with the inner chamber intercommunication of overcoat, the inner chamber of overcoat with cutting fluid feeding device's import intercommunication.

Through adopting the rotary joint subassembly, improved the unobstructed degree of flow of the cutting fluid in the cooling circulation route, do not take place to reveal to the setting up of rotary joint subassembly still is favorable to drawing forth of cutting fluid.

In a preferred technical solution of the above roller shaft assembly, a portion of the pull rod, which is far away from the first connecting portion, extends out of the second shaft hole and is inserted into the third shaft hole, a gap exists between an inner wall of the third shaft hole and an outer wall of the pull rod, and the gap is communicated with an inner cavity of the outer sleeve to form the sixth channel.

Through adopting the sixth passageway, can be favorable to flowing the cutting fluid of fifth passageway on the second bearing box to the sixth passageway with the sixth passageway that forms between the inner wall in third shaft hole and the outer wall of pull rod, cool off the rotary joint subassembly.

In a preferred embodiment of the above roller shaft assembly, a through hole is radially formed on an outer peripheral side of the third rotating shaft, and a gap between an inner wall of the third shaft hole and an outer wall of the pull rod is communicated with an inner cavity of the outer sleeve through the through hole to form the sixth passage.

Through survey at the periphery of third rotation axis and radially seted up the through-hole, do benefit to the cutting fluid discharge in the clearance between the inner wall in third shaft hole and the outer wall of pull rod for cutting fluid and cutting fluid among the cutting fluid feeding device form the cooling circulation route in the roller axle subassembly, improve the cooling effect of roller axle subassembly.

In a preferable technical scheme of the roller shaft assembly, a liquid return port is formed in the outer wall of the outer sleeve, and the inner cavity of the outer sleeve is communicated with the inlet of the cutting liquid supply device through the liquid return port.

Through set up the liquid return mouth on the outer wall of overcoat, do benefit to the cutting fluid that flows back in the rotary joint subassembly and flow into the cutting fluid feeding device through the liquid return mouth in to do benefit to and realize cutting fluid reuse, avoid cutting fluid extravagant.

In a preferred technical scheme of the roller shaft assembly, the outer wall of the outer sleeve is further provided with a liquid injection port which is not communicated with the liquid return port, and the liquid inlet is communicated with an outlet of the cutting liquid supply device through the liquid injection port.

Through set up notes liquid mouth and the liquid mouth that does not communicate each other on the overcoat, be favorable to the introduction and the drawing forth of cutting fluid, conveniently annotate the tube coupling between liquid mouth and the cutting fluid feeding device back, can also prevent to flow back the cutting fluid in the rotary joint subassembly and mix with the cutting fluid of new entering, influence the cooling effect of roller axle subassembly.

In a preferred technical solution of the above roller assembly, the rotary joint assembly further includes a partition member, the partition member is sleeved on the third rotating shaft and abuts against an inner wall of the outer sleeve, so as to partition the outer sleeve into a first inner cavity, a gap between an inner wall of the third shaft hole and an outer wall of the pull rod is communicated with the first inner cavity through the through hole, and the first inner cavity is communicated with an inlet of the cutting fluid supply device through the fluid return port.

Through adopting the inner chamber of separating the overcoat to separate first inner chamber by separating the part, realized cutting fluid business turn over isolated between the flow path, avoided among the backward flow process cutting fluid and the cutting fluid of newly getting into to mix influences the cooling effect to and cutting fluid flows into the inside of rotary joint subassembly, causes the destruction to other parts in the rotary joint subassembly.

In the preferable technical scheme of the above roller shaft assembly, the rotary joint assembly further comprises an end cover, the end cover is buckled in a sealing manner at one end, far away from the second connecting part, of the outer sleeve, so that the end cover, the outer sleeve and the separating part are enclosed to form a second inner cavity, the part, far away from the first connecting part, of the pull rod extends out of the third shaft hole and extends into the second inner cavity, and the liquid inlet is communicated with the liquid injection port through the second inner cavity.

Enclose through end cover and overcoat, partition member and establish and form the second inner chamber, second inner chamber and first inner chamber do not communicate each other, can prevent that the cutting fluid of backward flow from mixing with the cutting fluid that newly flows into the roller subassembly, influencing the cooling effect of roller subassembly. Stretch into the second inner chamber through pull rod one end, do benefit to cutting fluid and flow into first passageway and cool off roller assembly, increased roller assembly's overall arrangement rationality.

In a preferred technical solution of the above roller shaft assembly, the rotary joint assembly further includes a pressing block, the pressing block is sleeved on the portion of the pull rod far away from the first connecting portion and abuts against the third rotating shaft, and a nut is screwed to the portion of the pull rod far away from the first connecting portion and presses against the pressing block.

Through adopting briquetting and nut for the pull rod can carry out axial locking with first bearing box, roller, second bearing box, improves the firm in connection degree of first bearing box, roller, second bearing box.

The present application further provides a cutting assembly including the roller assembly described above in a burdensome manner.

It should be noted that the wire cutting machine has all the technical effects of the roller assembly described above, and the details are not repeated herein.

The application also provides a wire cutting machine, including the roller assembly of any one of the above technical schemes, or the cutting assembly in the above technical scheme.

It should be noted that the wire cutting machine has all the technical effects of the roller assembly or the cutting assembly, and the description thereof is omitted.

Drawings

Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

FIG. 1 is a cross-sectional view of a prior art roller assembly;

FIG. 2 is a structural view of the roll shaft assembly of the present invention;

FIG. 3 is a partial cross-sectional view of the roll shaft assembly of the present invention;

FIG. 4 is an enlarged view of A in FIG. 3;

FIG. 5 is an enlarged view of a portion of the roller shaft of the roller assembly of the present invention;

FIG. 6 is a partial cross-sectional view of the roller axle assembly of the present invention at the second bearing housing and rotary joint assembly;

FIG. 7 is a block diagram of a rotary joint assembly of the roller axle assembly of the present invention;

FIG. 8 is a cross-sectional view of the rotary joint assembly of the roll shaft assembly of the present invention.

Attached pictureRecording a list:

1. a roll shaft; 11. a wire slot; 12. a first plug; 2. a pull rod; 21. a first channel; 22. a liquid inlet; 23. a liquid outlet; 24. a second channel; 3. a first bearing housing; 31. a first rotating shaft; 32. a first duct; 33. a second aperture; 34. a radial bore; 35. a first flange; 36. a first bearing; 37. a first bearing sleeve; 4. a second bearing housing; 41. a second rotation shaft; 42. a fifth channel; 43. a second flange; 44. a second bearing; 45. a second bearing sleeve; 5. a rotary joint assembly; 51. a third rotation axis; 511. a platen; 512. a rotating shaft support; 513. a third bearing; 514. a bearing gland; 515. a lip-shaped seal ring; 516. a lip-shaped sealing ring gland; 517. a third flange; 5171. a second plug; 518. a drain valve; 52. a jacket; 521. a liquid injection port; 522. a liquid return port; 523. a joint; 53. a sixth channel; 531. a through hole; 532. a first lumen; 533. a gap; 54. a partition member; 541. rotating the sleeve; 542. a retainer ring; 55. an end cap; 56. briquetting; 561. a nut; 57. a second lumen; 58. pulling the rod; 581. a fixed seat; 59. mechanical sealing; 6. a diamond wire; 7. a coupling; 8. an electric motor.

Detailed Description

Preferred embodiments of the present application are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principles of the present application, and are not intended to limit the scope of protection of the present application. For example, although the present embodiment is described in connection with application to a wire cutting machine, this is not intended to limit the scope of the present application, and those skilled in the art can apply the present application to other application scenarios without departing from the principles of the present application. For example, the spraying device of the present application can obviously be applied to other types of cutting machines, such as plasma cutting machines, laser cutting machines, etc.

It should be noted that in the description of the present application, the terms of direction or positional relationship indicated by the terms "upper", "lower", "inner", "bottom", "end", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application.

In addition, it should be noted that, in the description of the present application, unless otherwise explicitly stated or limited, the terms "disposed," "connected," and "communicating" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be mechanically coupled, directly coupled, indirectly coupled through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those skilled in the art according to specific situations.

Referring first to fig. 1 to 8, fig. 1 is a sectional view of a prior art roller assembly;

FIG. 2 is a block diagram of the roller assembly of the present invention; FIG. 3 is a partial cross-sectional view of the roll shaft assembly of the present invention;

FIG. 4 is an enlarged view of A in FIG. 3; FIG. 5 is an enlarged view of a portion of the roller shaft of the roller assembly of the present invention;

FIG. 7 is a block diagram of a rotary joint assembly of the roller axle assembly of the present invention; FIG. 8 is a cross-sectional view of the rotary joint assembly of the roll shaft assembly of the present invention.

As shown in fig. 1, the conventional roller assembly includes a roller shaft 1, a first bearing housing 3, a second bearing housing 4, and a pull rod 2, wherein one end of the roller shaft 1 is connected to a first rotation shaft 31 of the first bearing housing 3 in a transmission manner, and the other end is connected to a second rotation shaft 41 of the second bearing housing 4 in a transmission manner. One end of the first rotating shaft 31, which is far away from the roller shaft 1, extends out of the first bearing box 3 and is connected with the motor 8 through a coupling 7. A first shaft hole is formed in the roller shaft 1, the pull rod 2 is inserted into the first shaft hole, a first hole channel 32 is formed in one end, close to the roller shaft 1, of the first rotating shaft 31, and one end of the pull rod 2 is in threaded connection with the first hole channel 32. The second shaft hole is formed in the second rotating shaft 41, the end, far away from the first bearing box 3, of the pull rod 2 sequentially extends out of the first shaft hole and the second shaft hole, and the pull rod 2 extending out of the second shaft hole is axially locked through a nut 561. Through such structure setting for buddha's warrior attendant wire cut electrical discharge machining is in the course of the work, and 8 transmission kinetic energy of motor make first rotation axis 31 rotate at a high speed under shaft coupling 7's effect, because first rotation axis 31 is connected with roller 1 transmission, roller 1 is connected with second rotation axis 41 transmission, consequently roller 1 and second rotation axis 41 synchronous rotation, thereby drive the buddha's warrior attendant wire 6 high-speed rotation of winding on roller 1, the cutting of cutting material is treated in the realization. However, since the roller assembly does not have a cooling function, the temperature of the roller 1 is gradually increased during the cutting process of the diamond wire cutting machine, so that the thermal deformation of the roller 1 is increased, and the increase of the thermal deformation of the roller 1 can cause the cutting precision of the diamond wire cutting machine to be reduced, the quality of the cut material to be reduced, and even cause the diamond wire 6 wound on the roller 1 to be broken.

As shown in fig. 2 and 3, in order to solve the problem of temperature increase of the roller shaft 1 in the cutting process, the roller shaft assembly of the present application comprises a roller shaft 1 and a pull rod 2, wherein a first shaft hole is formed in the roller shaft 1; the pull rod 2 is used for axially locking the roll shaft 1, at least part of the pull rod 2 is inserted into the first shaft hole, a first channel 21 is arranged in the pull rod 2, and a liquid inlet 22 and a liquid outlet 23 which are communicated with the first channel 21 are respectively arranged on the pull rod 2; a gap exists between the outer wall of the pull rod 2 and the inner wall of the first shaft hole and serves as a second channel 24, the liquid inlet 22 is communicated with an outlet of the cutting liquid supply device, the liquid outlet 23 is communicated with a first end of the second channel 24, and a second end of the second channel 24 is communicated with an inlet of the cutting liquid supply device.

Through inserting the pull rod 2 of establishing axial locking in the first shaft hole on roller 1, set up first passageway 21 and inlet 22 and the liquid outlet 23 with first passageway 21 intercommunication in the pull rod 2, and there is the clearance and as second passageway 24 between the inner wall of the outer wall of pull rod 2 and first shaft hole, make the cutting fluid in the cutting fluid feeding mechanism can flow into in first passageway 21 through inlet 22, flow into second passageway 24 through liquid outlet 23 again, the cutting fluid in the second passageway 24 flows back to the cutting fluid feeding mechanism again, form a complete cooling cycle, can cool off roller 1, reduce the temperature of roller 1 in the cutting process, thereby reduce the heat altered shape that roller 1 produced when high-speed cutting, improve the cutting precision of diamond wire cut-off machine and the cutting quality of cutting material, can also avoid diamond wire 6 to appear the problem of broken string.

Referring now to fig. 2-8, a preferred embodiment of the roll axle assembly of the present application will be described. It will be appreciated by those skilled in the art that the following embodiments are presented merely to illustrate the principles of the application and are not intended to limit the scope of the application. On the premise that the roller shaft assembly at least comprises the roller shaft 1 and the pull rod 2, the following arrangement modes can be adjusted by a person skilled in the art, so that the roller shaft assembly can be suitable for more specific application scenes.

Referring to fig. 2-3, in a more preferred embodiment, the roll shaft assembly includes a roll shaft 1, a tie rod 2, a first bearing housing 3, a second bearing housing 4, and a swivel assembly 5. One end of the roll shaft 1 is connected with the first rotating shaft 31 of the first bearing box 3 in a transmission way, the other end of the roll shaft is connected with the second rotating shaft 41 of the second bearing box 4 in a transmission way, and the third rotating shaft 51 of the rotary joint component 5 is connected with the second rotating shaft 41 of the second bearing box 4 in a transmission way. A first shaft hole is formed in the roller shaft 1, a pull rod 2 is inserted into the first shaft hole, a first channel 21 is formed in the pull rod 2, and a gap exists between the outer wall of the pull rod 2 and the inner wall of the first shaft hole and serves as a second channel 24. One end of the first rotating shaft 31 close to the roller shaft 1 is provided with a first pore passage 32 and a second pore passage 33, the first pore passage 32 is communicated with the second pore passage 33, one end of the pull rod 2 is screwed in the first pore passage 32, and one end of the pull rod 2 screwed in the first pore passage 32 is provided with a liquid outlet 23 communicated with the first channel 21. A second shaft hole and a third shaft hole are respectively formed in the second rotating shaft 41 and the third rotating shaft 51, one end, far away from the first bearing box 3, of the pull rod 2 sequentially extends out of the first shaft hole, the second shaft hole and the third shaft hole, the pull rod 2 extending out of the third shaft hole is axially locked through a nut 561, and a liquid inlet 22 is formed in the end. A gap is formed between the outer wall of the tie rod 2 and the inner wall of the second shaft hole as the fifth passage 42, a gap is formed between the outer wall of the tie rod 2 and the inner wall of the third shaft hole, and a through hole 531 communicating with the gap is radially opened on the outer peripheral side of the third rotary shaft 51. In the process of high-speed rotation of the roller shaft assembly, cutting fluid in the cutting fluid supply device flows into the first channel 21 in the pull rod 2 through the fluid inlet 22 of the pull rod 2, sequentially flows through the first pore passage 32, the second channel 24, the fifth channel 42 through the fluid outlet 23, has a gap between the outer wall of the pull rod 2 and the inner wall of the third shaft hole, and flows back into the cutting fluid supply device through the through hole 531 to form a complete cooling circulation path to cool the roller shaft assembly.

Specifically, referring to fig. 2 to 3, the roll shaft 1 is in a long shaft shape, a first shaft hole is formed in the axis direction of the roll shaft, two ends of the first shaft hole are in a horn shape with a long inside and a short outside, and the middle part of the first shaft hole is in a cylindrical shape. Annular grooves are formed in inner walls of two ends of a first shaft hole in the middle, first plugs 12 are embedded in the annular grooves, end sealing rings are arranged on the outer end faces of the two first plugs 12, axial sealing rings are arranged between the first plugs 12 and the inner walls of the annular grooves, and the end sealing rings and the axial sealing rings can prevent cutting fluid from leaking from matching surfaces of the roller shaft 1 and rotating shafts of the first bearing box 3 and the second bearing box 4.

Referring to fig. 5, a plurality of wire grooves 11 are formed on the surface of the roller shaft 1, and when the diamond wires 6 are wound in the wire grooves 11 of 2 or more roller shafts 1, a wire mesh is formed, so that a material to be cut can be cut.

Referring to fig. 3, the pull rod 2 is in a long straight strip shape, a part of the pull rod is inserted into the first shaft hole, and two ends of the pull rod extend out of the first shaft hole. A first channel 21 is arranged in the pull rod 2, and the first channel 21 is linear. A gap exists between the outer wall of the drawbar 2 and the inner wall of the first bearing 36 as the second channel 24. One end of the pull rod 2 extends into the first bearing box 3, and the other end extends out of the second bearing box 4 and extends into the rotary joint component 5. 2 one ends of pull rod in stretching into first bearing box 3 have seted up liquid outlet 23, 2 one ends of pull rod in stretching into rotary joint subassembly 5 have seted up inlet 22, inlet 22 all communicates with first passageway 21 with liquid outlet 23, make cutting fluid feeding device can flow into in first passageway 21 through inlet 22, rethread liquid outlet 23 flows, the cutting fluid that flows out from liquid outlet 23 can flow back in second passageway 24, the time of cutting fluid in roller 1 has been prolonged, can improve the cooling effect of cutting in-process roller 1.

Referring back to fig. 3, the two first plugs 12 are further respectively provided with a through hole and a connecting hole, the through holes are arranged along the axis of the first plugs 12, and the through holes are inserted in the pull rod 2; the connecting hole is communicated with the second channel 24, so that the connecting hole can be used as a flow channel of cutting fluid, and a cooling circulation path is formed by the connecting hole, the second channel 24 and the first channel 21 to cool the roller shaft 1.

Referring to fig. 1 to 3, the first bearing housing 3 is cylindrical, the first bearing housing 3 includes a first rotation shaft 31, a plurality of first bearings 36, a first bearing sleeve 37 and a first flange 35, the first rotation shaft 31 is sleeved with the plurality of first bearings 36, the plurality of first bearings 36 are sleeved with the first bearing sleeve 37, the first flange 35 is disposed on the end surface of the first bearing sleeve 37 close to the roller shaft 1, and the first flange 35 is connected to the first bearing sleeve 37 through a bolt. The two ends of the first rotating shaft 31 respectively extend out of the first bearing sleeve 37, and the shaft surface of the part of one end of the first rotating shaft 31 extending out of the first bearing sleeve 37 is a conical surface and can be inserted into the first shaft hole of the roller shaft 1 and is matched and connected with the conical surface of the end part of the first shaft hole with a horn shape, so that the first bearing box 3 is connected with the roller shaft 1 in a transmission manner. The other end of the first rotating shaft 31 extending out of the first bearing housing 3 can be connected to the motor 8 through the coupling 7, so that the roller shaft 1 can be driven by the motor 8 to rotate at a high speed. In the working process of the motor 8, the first rotating shaft 31 on the first bearing box 3 rotates under the action of the coupler 7, and the first rotating shaft 31 is in conical surface fit connection with the roller shaft 1, so that the roller shaft 1 can synchronously rotate under the action of the first rotating shaft 31.

Referring to fig. 3 and 4, during the high-speed rotation of the roller shaft assembly, the first rotating shaft 31 rotates synchronously at a high speed, and in order to reduce the temperature generated during the high-speed rotation of the first rotating shaft 31, a first duct 32 and a plurality of second ducts 33 are formed at one end of the first rotating shaft 31 close to the roller shaft 1, and the first duct 32 is arranged along the axis of the first rotating shaft 31. The plurality of second pore passages 33 are arranged in a circumferential distribution mode, the outer peripheral side of the first rotating shaft 31 is provided with a plurality of radial pore passages 34 along the radial direction, the radial pore passages 34 and the second pore passages 33 are arranged in a one-to-one correspondence mode, and the radial pore passages 34 communicate the second ends of the first pore passages 32 with the first ends of the second pore passages 33, so that the cutting fluid in the first pore passages 32 flows into the second pore passages 33 under the guidance of the radial pore passages 34, the first rotating shaft 31 can be cooled, and the temperature generated in the high-speed rotating process of the first rotating shaft 31 is reduced. Of course, the arrangement of the radial holes 34 is not essential and can be selected by a person skilled in the art according to the specific application scenario. For example, the second hole 33 may be inclined, so that the first end of the second hole 33 is directly connected to the second end of the first hole 32 without the radial hole 34, thereby cooling the first rotating shaft 31.

In order to avoid the cutting fluid in the roller shaft assembly flowing out of the roller shaft assembly through the radial hole channels 34 and causing waste of the cutting fluid, one end of the radial hole channels 34 positioned on the outer peripheral side of the first rotating shaft 31 is blocked, so that the cutting fluid can only flow in the roller shaft assembly. One end of the pull rod 2 is connected in the first duct 32 in a threaded manner, so that the second end of the second duct 33 is communicated with the first end of the first passage 21, a cooling circulation path is formed, the cutting fluid in the first passage 21 can flow into the first duct 32 through the fluid outlet 23, the cutting fluid in the first duct 32 flows into the second duct 33 through the radial duct 34, and the cutting fluid in the second duct 33 flows into the second passage 24, so that the purpose of cooling the roller shaft 1 and the first rotating shaft 31 is achieved.

One end face of the first rotating shaft 31 close to the roller shaft 1 is provided with a plurality of positioning columns, two ends of the roller shaft 1 are respectively provided with a plurality of positioning holes, and the positioning holes correspond to and are matched with the positioning columns one by one, so that the first bearing box 3 can be quickly and accurately installed on the roller shaft 1. When the first rotary shaft 31 is fitted to the end tapered surface of the first shaft hole, the end of the first rotary shaft 31 can be pressed against the end seal ring on the outer end surface of the first plug 12, and the cutting fluid can be prevented from leaking from the fitting surface between the roller shaft 1 and the first rotary shaft.

Referring to fig. 1-3, the second bearing box 4 is cylindrical, the second bearing box 4 includes a second bearing sleeve 45, a plurality of second bearings 44, a second rotating shaft 41 and a second flange 43, a plurality of second bearings 44 are sleeved on the second rotating shaft 41, a second bearing sleeve 45 is sleeved on the second bearings 44, second flanges 43 are arranged at two ends of the second bearing sleeve 45, the second flanges 43 are connected with the second bearing sleeve 45 through bolts, a second rotating shaft 41 is inserted into the second bearing sleeve 45, one end of the second rotating shaft 41 close to the roller shaft 1 extends out of the second bearing sleeve 45, the shaft surface is a conical surface, the second rotating shaft can be inserted into the first shaft hole, the second rotating shaft is connected with the first shaft hole in a horn-shaped end conical surface matching mode, and therefore the second bearing box 4 is in transmission connection with the roller shaft 1, and the second rotating shaft 41 rotates synchronously when the roller shaft 1 rotates.

In the process of high-speed rotation of the roller shaft assembly, the second rotating shaft 41 rotates at high speed synchronously, in order to reduce the temperature generated in the process of high-speed rotation of the second rotating shaft 41, a second shaft hole is formed in one end, close to the roller shaft 1, of the second rotating shaft 41, the pull rod 2 is partially inserted into the second shaft hole, a gap exists between the outer wall of the pull rod 2 and the inner wall of the second shaft hole and serves as a fifth channel 42, the fifth channel 42 is communicated with the second end of the second channel 24, so that cutting fluid in the second channel 24 can flow into the fifth channel 42, the second rotating shaft 41 can be cooled, and the temperature generated in the process of high-speed rotation of the second rotating shaft 41 is reduced.

One end of the second rotating shaft 41 close to the roller shaft 1 is provided with a plurality of positioning columns, the positioning columns can correspond to and cooperate with positioning holes at corresponding positions of the roller shaft 1, so that the second bearing box 4 can be quickly and accurately installed on the roller shaft 1, and meanwhile, the second rotating shaft 41 can also be quickly matched with a horn-shaped end part conical surface of the first shaft hole. When the second rotary shaft 41 is fitted to the end tapered surface of the second shaft hole, the end of the second rotary shaft 41 can be pressed against the end seal ring on the outer end surface of the first plug 12, and the cutting fluid can be prevented from leaking from the fitting surface between the roller shaft 1 and the second rotary shaft 41.

Referring next to fig. 2, 3, 6, 7 and 8, the swivel joint assembly 5 will be described. The rotary joint assembly 5 includes a third rotary shaft 51, an outer sleeve 52, a partition member 54, and an end cap 55. The outer sleeve 52 has an inner cavity, the third rotating shaft 51 is disposed in the inner cavity, and the partition member 54 is fitted over the third rotating shaft 51 and abuts against the inner wall of the outer sleeve 52 to partition the inner cavity of the outer sleeve 52 into the first inner cavity 532. The third rotating shaft 51 is provided with a through hole 531 communicated with the first inner cavity 532, and the end cover 55 is fastened at one end of the outer sleeve 52 far away from the second connecting part in a sealing manner, so that the end cover 55, the outer sleeve 52 and the separating component 54 enclose a second inner cavity 57 which is not communicated with the first inner cavity 532.

Referring to fig. 6 to 8, a pressure plate 511, a rotating shaft support 512, two third bearings 513, a mechanical seal 59, and a partition member 54 are sleeved on the third rotating shaft 51, wherein the pressure plate 511, the rotating shaft support 512, the two third bearings 513, the mechanical seal 59, and the partition member 54 are sequentially arranged from the second bearing box 4 to the direction of the rotary joint assembly 5. The pressing plate 511 is fixed at one end of the third rotating shaft 51 close to the second bearing box 4, the third rotating shaft 51 partially extends out of the pressing plate 511 and is inserted into the second axial hole of the second rotating shaft 41, and the pressing plate 511 is fixedly connected with the end part of the second rotating shaft 41 through a bolt, so that the third rotating shaft 51 can synchronously rotate under the transmission action of the second rotating shaft 41. The rotary shaft support 512 is formed integrally with the third rotary shaft 51, and one end of the rotary shaft support, which is close to the pressure plate 511, abuts against the pressure plate 511, and the rotary shaft support 512 and the pressure plate 511 are sealed by an O-ring for preventing the cutting fluid from flowing into the second bearing housing 4 and causing damage. One of the two third bearings 513 is arranged close to the pressure plate 511, the other bearing is arranged far away from the pressure plate 511, the third bearing 513 far away from the pressure plate 511 is completely arranged in the inner cavity of the outer sleeve 52, the part of the bearing close to the pressure plate 511 is arranged in the inner cavity of the outer sleeve 52 and partially extends out of the inner cavity, a bearing gland 514 is sleeved on the third bearing 513 extending out of the inner cavity, and the bearing gland 514 is fixedly connected with the outer sleeve 52 through bolts. A gap exists between the third bearing 513 close to the pressure plate 511 and the rotating shaft support 512, and a lip-shaped seal ring 515 is sleeved in the gap and on the second rotating shaft 41, so that cutting fluid is prevented from flowing into the second bearing box 4 and damaging the second bearing box 4 after the mechanical seal 59 fails. The lip of the lip seal 515 faces the third bearing 513, a lip seal gland 516 is sleeved on the lip seal 515, and the lip seal gland 516 is fixed between the bearing gland 514 and the rotating shaft support 512. The third rotary shaft 51 is further fitted with a stopper fixed to the third rotary shaft 51, and one end surface of the stopper abuts against one end surface of the third bearing 513 away from the second bearing housing 4, so that the two third bearings 513 are fixed between the stopper and the lip seal 515.

In addition, the mechanical seal 59 sleeved on the third rotating shaft 51 can prevent the third bearing 513 position where the backflow cutting fluid enters from damaging the third bearing 513, wherein the mechanical seal 59 is arranged close to the second bearing box 4, the part of the mechanical seal 59 close to the second bearing box 4 is abutted against the inner wall of the inner cavity and is sealed by a sealing ring, and a gap exists between the outer wall of the rest part of the mechanical seal 59 and the inner wall of the inner cavity.

The separating component 54 comprises a rotating sleeve 541 and a retaining ring 542 which are sleeved on the third rotating shaft 51, the rotating sleeve 541 is abutted against the inner wall of the inner cavity, the retaining ring 542 is fixed at one end of the rotating sleeve 541, which is far away from the second bearing box 4, so that the rotating sleeve 541 has a limiting effect on the rotating sleeve 541, the retaining ring 542 is fixedly connected with the inner wall of the inner cavity, the rotating sleeve 541 is arranged close to the mechanical seal 59, and a gap exists between the rotating sleeve 542 and the mechanical seal 59, so that the rotating sleeve 542 and the retaining ring 541 separate the inner cavity of the outer sleeve 52 into a first inner cavity 532. The provision of the partition member 54 can prevent the cutting fluid flowing back into the rotary joint assembly 5 from being mixed with the newly introduced cutting fluid, affecting the cooling effect of the roller shaft assembly.

The outer sleeve 52 is provided with a liquid injection port 521 and a liquid return port 522, the liquid injection port 521 and the liquid return port 522 are respectively provided with a joint 523, the liquid injection port 521 is communicated with an outlet of the cutting liquid supply device through the joint 523, the liquid return port 522 is communicated with an inlet of the cutting liquid supply device through the joint 523, the liquid return port 522 is communicated with the first inner cavity 532, and the liquid injection port 521 is communicated with the second inner cavity 57. In addition, an end cover 55 is arranged at one end of the outer sleeve 52 far away from the second bearing box 4 in a sealing and buckling mode, and the end cover 55, the outer sleeve 52 and the partition part 54 enclose a second inner cavity 57 which is not communicated with the first inner cavity 532, so that the cutting fluid flowing back into the rotary joint assembly 5 is prevented from being mixed with newly-entered cutting fluid, and the cooling effect of the roller shaft assembly is prevented from being influenced. An O-ring seal is fixed between the end cap 55 and the outer sleeve 52 for preventing the leakage of the cutting fluid.

A through hole 531 is radially formed on the outer peripheral side of the third rotating shaft 51, the through hole 531 is formed in a portion between the mechanical seal 59 and the rotary sleeve 541 on the third rotating shaft 51, and the through hole 531 communicates with the first inner chamber 532. A third shaft hole is further formed in the third rotating shaft 51, the pull rod 2 is partially inserted into the third shaft hole, and a gap 533 is formed between the outer wall of the pull rod 2 and the inner wall of the third shaft hole. The sixth channel 53 is formed by the first inner cavity 532, the through hole 531 on the third rotating shaft 51 and the gap 533 between the outer wall of the pull rod 2 and the inner wall of the third rotating shaft 51, wherein the sixth channel 53 is communicated with the second end of the fifth channel 42, so that the cutting fluid in the fifth channel 42 can flow into the sixth channel 53, and then flows back to the cutting fluid supply device through the sixth channel 53 and the fluid return port 522. In addition, the part of the third rotating shaft 51 far away from the through hole 531 is connected with the pull rod 2 in a sealing manner through an O-ring, so that the cutting fluid can be prevented from flowing into the rotary joint assembly 5 through the sixth channel 53 to damage other parts in the rotary joint assembly 5, and the backflow cutting fluid can be prevented from being mixed with the newly entering cutting fluid.

Referring back to fig. 3, one end of the pull rod 2 extends into the second inner cavity 57 through the third shaft hole, so that the liquid inlet 22 can communicate with the liquid injection port 521 through the second inner cavity 57, and the cutting liquid in the cutting liquid supply device can flow into the first passage 21 through the liquid injection port 521, the second inner cavity 57 and the liquid inlet 22 to cool the roller assembly. The third rotating shaft 51 is further sleeved with a pressing block 56, the pressing block 56 is sleeved on the part, far away from the first connecting part, of the pull rod 2 and is pressed against the third rotating shaft 51, and the nut 561 is screwed on the part, far away from the second bearing box 4, of the pull rod 2 and is pressed on the pressing block 56, so that the second bearing box 4, the roller shaft 1 and the first bearing box 3 are axially locked, and the connecting firmness of the rotary joint component 5, the first bearing box 3, the roller shaft 1 and the second bearing box 4 is improved.

Referring to fig. 6 to 8, a third flange 517 is mounted on the outer sleeve 52, and the third flange 517 is fixedly connected to the second flange 43 of the second bearing housing 4 by bolts, thereby connecting the rotary joint assembly 5 and the second bearing housing 4 together. An O-ring is provided at the junction of the third flange 517 and the outer sleeve 52 to prevent dust in the air from intruding into the second bearing housing 4 and causing damage. In addition, the end of the third flange 517, which is far away from the second bearing box 4, is provided with a draw bar 58, the draw bar 58 extends along the third flange 517 in the direction far away from the second bearing box 4, a fixing seat 581 is sleeved on the draw bar 58, one end of the fixing seat 581 is fixedly connected with the outer sleeve 52, so as to prevent the outer sleeve 52 from rotating along with the third rotating shaft 51, and in addition, the arrangement of the draw bar 58 can also assist in dismounting the second bearing box 4.

The roller shaft assembly has a trace amount of cutting fluid to leak from the rotary seal under the normal working state, in order to discharge the leaked cutting fluid, a fluid discharge hole communicated with the inner cavity is further formed in the outer sleeve 52, a fluid discharge valve 518 is arranged on the fluid discharge hole, and the cutting fluid leaked by opening the fluid discharge valve 518 can be discharged through the fluid discharge hole. If the sealing function of the rotary seal fails, in order to prevent the cutting fluid from flowing into the second bearing box 4, a fluid discharge port is formed in the third flange 517 and provided with a second plug 5171, and at the moment, the second plug 5171 is pulled out, so that the cutting fluid in the rotary joint assembly 5 can flow out through the fluid discharge port.

With reference to fig. 2-8, the principle of cooling the roller assembly during high speed rotation is as follows:

the cutting fluid is discharged from an outlet of the cutting fluid supply device, flows into the second inner cavity 57 in the rotary joint component 5 through the fluid injection port 521, flows into the first channel 21 in the pull rod 2 through the fluid inlet 22 on the pull rod 2, flows into the first duct 32 of the first bearing box 3, flows into the gap between the pull rod 2 and the roller shaft 1 through the radial duct 34 and the second duct 33, flows into the gap 533 between the pull rod 2 and the rotary joint component 5 through the gap between the pull rod 2 and the second bearing box 4, and is communicated with the first inner cavity 532 through the through hole 531, so that the cutting fluid can sequentially pass through the first inner cavity 532 and the fluid return port 522 through the through hole 531 and flow back to the cutting fluid supply device, and the cooling of the roller shaft component in the high-speed rotation process is realized by circulation.

It should be noted that the above preferred embodiments are only used for illustrating the principle of the present application, and are not intended to limit the protection scope of the present application. Without departing from the principles of the present application, those skilled in the art can adjust the setting manner, so that the present application can be applied to more specific application scenarios.

For example, in an alternative embodiment, although both ends of the first shaft hole in the roll shaft 1 are flared, the shaft surface of the rotating shaft connected to the first shaft hole is tapered, and the rotating shafts of the first and second bearing boxes 4 are inserted into the first shaft hole and are in driving connection with the tapered end surface of the first shaft hole having the flared shape, there are other driving connection methods between the roll shaft 1 and the rotating shafts, and a person skilled in the art can adjust the driving connection method between the first rotating shaft 31 of the first bearing box 3 and the roll shaft 1, and between the second rotating shaft 41 of the second bearing box 4 and the roll shaft 1, provided that the first rotating shaft 31 of the first bearing box 3 and the roll shaft 1 can be driven and connected. For example, the two end surfaces of the roll shaft 1 are tapered surfaces, the shaft hole of the rotating shaft connected to the roll shaft 1 is flared, and the roll shaft 1 can be inserted into the shaft hole of the rotating shaft and is in transmission connection with the tapered end surface of the shaft hole having a flared shape.

For another example, in another alternative embodiment, although the first bearing housing 3 and the second bearing housing 4 are both cylindrical-like in the above embodiment, the shapes of the first bearing housing 3 and the second bearing housing 4 are not constant, and those skilled in the art can adjust the shapes according to specific application scenarios. For example, the first bearing housing 3 and/or the second bearing housing 4 may have a rectangular parallelepiped shape or the like.

As another example, in another alternative embodiment, although the above embodiment is described in which the tie rod 2 has a long straight bar shape and the first passage 21 has a straight line shape, the shapes of the tie rod 2 and the first passage 21 are not constant, and those skilled in the art may adjust the shapes of the tie rod 2 and the first passage 21 as long as the tie rod 2 can be inserted into the first shaft hole of the roller shaft 1, a gap exists between the outer wall of the tie rod 2 and the inner wall of the first shaft hole, and the first passage 21 can serve as a flow path for the cutting fluid. For example, the tie rod 2 may be curved and/or the first channel 21 may be curved. In addition, the opening positions of the liquid outlet 23 and the liquid inlet 22 on the pull rod 2 are not constant, and those skilled in the art can adjust the opening positions of the liquid outlet 23 and the liquid inlet 22 on the premise that the cutting fluid can flow into the first channel 21 of the pull rod 2 through the liquid inlet 22 and then flow out through the liquid outlet 23. For example, the liquid inlet port 22 and/or the liquid outlet port 23 may be opened on the outer peripheral side surface of the draw bar 2.

For another example, in yet another alternative embodiment, although the foregoing embodiment is described in combination with that the plurality of second ducts 33 are arranged at one end of the first rotating shaft 31 close to the roller shaft 1 in a circumferentially distributed manner, the outer peripheral side of the first rotating shaft 31 is provided with the plurality of radial ducts 34 along the radial direction, the radial ducts 34 and the second ducts 33 are arranged in a one-to-one correspondence, and the radial ducts 34 communicate the second end of the first duct 32 with the first end of the second duct 33, so that the cutting fluid in the first duct 32 can flow into the second duct 33 through the radial ducts 34, the arrangement manner and the arrangement number of the second ducts 33 are not changed, and can be adjusted by a person skilled in the art according to a specific application scenario. For example, the number of the second passages 33 may be 1, and/or a plurality of the second passages 33 may communicate to form one annular passage as the second passage 33, and/or the number of the radial passages 34 may be 1 or another number as long as the first passage 32 can communicate with the second passage 33.

For another example, in an alternative embodiment, although the radial hole 34 is opened radially from the outer circumference of the first rotating shaft 31 in the above embodiment, the specific arrangement of the radial hole 34 is not exclusive, and a person skilled in the art can adjust the specific arrangement of the radial hole 34 on the premise that the first hole 32 is communicated with the second hole 33. For example, the radial ports 34 are formed obliquely from the outer peripheral side of the first rotating shaft 31.

For another example, in yet another alternative embodiment, although the above embodiment is described in connection with the end of the pull rod 2 close to the first rotating shaft 31 being screwed with the first end of the first hole 32, the connection manner of the pull rod 2 and the first hole 32 is not constant, and those skilled in the art can adjust the connection manner as long as the pull rod 2 can be connected with the first hole 32. For example, the pull rod 2 and the first hole 32 can be connected together by welding or clamping.

For another example, in the above-mentioned alternative embodiment, although the above-mentioned embodiment is described in which the pouring port 521 which is not communicated with the liquid return port 522 is provided in the outer wall of the outer sleeve 52, and the cap is sealingly fastened to the end of the outer sleeve 52 remote from the second bearing housing 4, so that the end cap 55, the outer sleeve 52 and the partition member 54 enclose the second inner cavity 57, the portion of the pull rod 2 remote from the second bearing housing 4 extends out of the third shaft hole and into the second inner cavity 57, and the liquid inlet 22 is communicated with the pouring port 521 through the second inner cavity 57, the opening position of the pouring port 521 is not always fixed, and may be adjusted in the art as long as the pouring port 521 can be communicated with the liquid inlet 22 through the second inner cavity 57. For example, the liquid filling port 521 may be formed in the end cap 55, the liquid filling port 521 is not communicated with the liquid return port 522 formed in the outer sleeve 52, and the liquid filling port 521 can be communicated with the liquid inlet 22 through the second inner cavity 57. Of course, the liquid injection port 521 is not necessarily provided, that is, in the case of no end cap 55, the outlet of the cutting liquid supply device is directly communicated with the liquid inlet 22 formed on the draw bar 2.

For another example, in another alternative embodiment, although the above embodiment has been described in connection with the first inner cavity 532 being abutted by the partition member 54 sleeved on the third rotating shaft 51 and the inner wall of the outer sleeve 52, so as to partition the inner cavity of the outer sleeve 52 into the first inner cavity 532, and the partition member 54 includes the rotating sleeve 541 and the retainer ring 542, the arrangement form of the first inner cavity 532 is not constant, and can be adjusted in the art as long as the first inner cavity 532 and the second inner cavity 57 are not communicated, the liquid return port 522 on the outer sleeve 52 can be communicated with the first inner cavity 532, and the sixth channel 53 is formed by the through hole 531 on the first inner cavity 532 and the third rotating shaft 51 and the gap 533 between the outer wall of the pull rod 2 and the inner wall of the third rotating shaft 51. For example, two partition plates may be sleeved on the rotating shaft, a gap is provided between the two partition plates, the through hole 531 is provided on the third rotating shaft 51 corresponding to the gap, and the partition plate abuts against the inner wall of the inner cavity, so that the inner cavity of the outer sleeve 52 is separated into the first inner cavity 532 by the two partition plates.

As another example, in another alternative embodiment, although the above embodiment is described in connection with the roller shaft assembly including the roller shaft 1, the pull rod 2, the first bearing box 3, the second bearing box 4 and the rotary joint assembly 5, the arrangement of the rotary joint assembly 5 is not necessary, and a person skilled in the art can select whether to arrange the rotary joint assembly 5 according to needs, as long as a cooling circulation path can be formed in the roller shaft assembly, so that the cutting fluid in the cutting fluid supply device can enter the roller shaft assembly through the fluid inlet 22, and finally can flow back to the cutting fluid supply device through the cooling circulation path. For example, the part of the pull rod 2 extending out of the second shaft hole is axially locked by a nut 561, so that the roller shaft 1, the first bearing box 3 and the second bearing box 4 are fixedly connected together, and the liquid inlet 22 is communicated with an outlet of the cutting liquid supply device; the second rotating shaft 41 is sleeved with a partition plate abutted to the inner cavity of the second bearing sleeve 45, the partition plate divides the inner cavity of the second bearing sleeve 45 into a cavity, the second bearing sleeve 45 is provided with a liquid return port communicated with the cavity, the outer peripheral side of the second rotating shaft 41 is radially provided with a through hole communicated with the fifth channel 42, the through hole is communicated with the cavity, the part, far away from the first bearing box 3 and the through hole, of the second rotating shaft 41 is in sealing connection with the pull rod 2 through an O-shaped ring, and cutting liquid in the fifth channel 42 can flow back to the cutting liquid supply device through the through hole, the cavity and the liquid return port.

As another example, in another alternative embodiment, although the above embodiment is described in connection with the roller shaft assembly including the roller shaft 1, the pull rod 2, the first bearing box 3, the second bearing box 4 and the rotary joint assembly 5, the second bearing box 4 is not necessarily provided, and a person skilled in the art can select whether to provide the second bearing box 4 or not as needed, as long as a cooling circulation path can be formed in the roller shaft assembly, so that the cutting fluid in the cutting fluid supply device can enter the roller shaft assembly through the fluid inlet 22, and finally can flow back to the cutting fluid supply device through the cooling circulation path. For example, the shaft surface of the portion of the third rotating shaft 51 extending out of the outer sleeve 52 is a tapered surface, and is inserted into the first shaft hole of the roller shaft 1, and is in fit connection with the end tapered surface having a trumpet shape of the first shaft hole, the end of the third rotating shaft 51 can be pressed against the end sealing ring on the outer end surface of the first plug 12, and the gap between the pull rod 2 and the third shaft hole is communicated with the second channel 24, so that the cutting fluid in the second channel 24 can flow back into the cutting fluid supply device through the sixth channel 53 and the fluid return port 522.

As another example, in another alternative embodiment, although the above embodiment is described in connection with the roller shaft assembly including the roller shaft 1, the pull rod 2, the first bearing housing 3, the second bearing housing 4 and the rotary joint assembly 5, the first bearing housing 3 is not necessarily provided, and one skilled in the art can select whether to provide the first bearing housing 3 or not according to the need, as long as a cooling circulation path can be formed in the roller shaft assembly, so that the cutting fluid in the cutting fluid supply device can enter the roller shaft assembly through the fluid inlet 22, and finally can flow back to the cutting fluid supply device through the cooling circulation path. For example, the roller shaft 1 is directly connected with the motor 8 in a transmission manner, one end of the pull rod 2, which is far away from the second bearing box 4, is inserted into the first shaft hole, and one end of the first shaft hole, which is far away from the second bearing box 4, on the roller shaft 1 is sealed by a plug, so that the cutting fluid flowing out of the fluid outlet 23 can flow into a gap between the pull rod 2 and the inner wall of the first shaft hole, that is, into the second channel 24, and the cutting fluid in the second channel sequentially passes through the fifth channel 42, the sixth channel 53 and the fluid return port 522 and finally flows back into the cutting fluid supply device.

As another example, in another alternative embodiment, although the above embodiment is described in connection with the roller shaft assembly including the roller shaft 1, the pull rod 2, the first bearing box 3, the second bearing box 4 and the rotary joint assembly 5, the arrangement of the rotary joint assembly 5 and the second bearing box 4 is not necessary, and one skilled in the art can select whether to arrange the rotary joint assembly 5 and the second bearing box 4 according to the need, as long as a cooling circulation path can be formed in the roller shaft assembly, so that the cutting fluid in the cutting fluid supply device can enter the roller shaft assembly through the fluid inlet 22, and finally can flow back to the cutting fluid supply device through the cooling circulation path. For example, one end of the pull rod 2, which is far away from the first bearing box 3, extends out of the first shaft hole, the nut 561 is screwed on the portion of the pull rod 2, which extends out of the first shaft hole, and presses the first plug 12, the outlet of the cutting fluid supply device is communicated with the liquid inlet 22, and the inlet of the cutting fluid supply device is communicated with the connecting hole on the first plug 12, so that the cutting fluid in the second channel 24 can flow back into the cutting fluid supply device through the connecting hole.

As another example, in another alternative embodiment, although the above embodiment is described in connection with the roller shaft assembly including the roller shaft 1, the pull rod 2, the first bearing housing 3, the second bearing housing 4 and the rotary joint assembly 5, the arrangement of the rotary joint assembly 5 and the first bearing housing 3 is not essential as long as a cooling circulation path can be formed in the roller shaft assembly, so that the cutting fluid in the cutting fluid supply device can enter the roller shaft assembly through the fluid inlet 22 and finally can flow back to the cutting fluid supply device through the cooling circulation path, and a person skilled in the art can select whether to arrange the rotary joint assembly 5 and the first bearing housing 3 as required. For example, one end of the pull rod 2, which is far away from the second bearing box 4, is inserted into the first shaft hole, the roller shaft 1 is in direct transmission connection with the motor 8, and one end, which is far away from the second bearing box 4, of the first shaft hole on the roller shaft 1 is sealed through a plug, so that the cutting fluid flowing out of the fluid outlet 23 can flow into a gap between the pull rod 2 and the inner wall of the first shaft hole, that is, the second channel 24; the part of the pull rod 2 extending out of the second shaft hole is axially locked through a nut 561, so that the roller shaft 1, the first bearing box 3 and the second bearing box 4 are fixedly connected together, and the liquid inlet 22 is communicated with an outlet of the cutting liquid supply device; the second rotating shaft 41 is sleeved with a partition plate abutted to the inner cavity of the second bearing sleeve 45, the partition plate divides the inner cavity of the second bearing sleeve 45 into a cavity, the second bearing sleeve 45 is provided with a liquid return port communicated with the cavity, the outer peripheral side of the second rotating shaft 41 is radially provided with a through hole communicated with the fifth channel 42, the through hole is communicated with the cavity, the part, far away from the first bearing box 3 and the through hole, of the second rotating shaft 41 is in sealing connection with the pull rod 2 through an O-shaped ring, and cutting liquid in the fifth channel 42 can flow back to the cutting liquid supply device through the through hole, the cavity and the liquid return port.

As another example, in another alternative embodiment, although the above embodiment is described in connection with the roller shaft assembly including the roller shaft 1, the pull rod 2, the first bearing box 3, the second bearing box 4 and the rotary joint assembly 5, the first bearing box 3 and the second bearing box 4 are not necessarily provided as long as a cooling circulation path can be formed in the roller shaft assembly, so that the cutting fluid in the cutting fluid supply device can enter the roller shaft assembly through the fluid inlet 22 and can finally flow back to the cutting fluid supply device through the cooling circulation path, and a person skilled in the art can select whether to provide the first bearing box 3 and the second bearing box 4 as required. For example, one end of the pull rod 2, which is far away from the rotary joint component 5, is inserted into the first shaft hole, the roller shaft 1 is in direct transmission connection with the motor 8, and one end, which is far away from the rotary joint component 5, of the first shaft hole on the roller shaft 1 is sealed through a plug, so that the cutting fluid flowing out of the fluid outlet can flow into a gap between the pull rod 2 and the inner wall of the first shaft hole, namely the second channel 24; the shaft surface of the part of the third rotating shaft 51 extending out of the outer sleeve 52 is a conical surface, is inserted into the first shaft hole of the roller shaft 1, and is in fit connection with the end conical surface of the first shaft hole in a horn shape, the end part of the second rotating shaft 41 can be pressed against the end sealing ring on the outer end surface of the first plug 12, and the gap between the pull rod 2 and the third shaft hole is communicated with the second channel 24, so that the cutting fluid in the second channel 24 can flow back into the cutting fluid supply device through the sixth channel 53 and the fluid return port 522.

As another example, in another alternative embodiment, although the above embodiment is described in connection with the roller shaft assembly including the roller shaft 1, the tie rod 2, the first bearing box 3, the second bearing box 4 and the rotary joint assembly 5, the arrangement of the first bearing box 3, the second bearing box 4 and the rotary joint assembly 5 is not essential as long as a cooling circulation path can be formed in the roller shaft assembly, so that the cutting fluid in the cutting fluid supply device can enter the roller shaft assembly through the fluid inlet 22 and finally can flow back to the cutting fluid supply device through the cooling circulation path, and a person skilled in the art can select whether to arrange the first bearing box 3, the second bearing box 4 and the rotary joint assembly 5 as required. For example, the end of the pull rod 2 provided with the liquid inlet 22 extends out of the first shaft hole and is axially locked through the nut 561, the end of the pull rod provided with the liquid outlet 23 is inserted into the first shaft hole, the roller shaft 1 is in direct transmission connection with the motor 8, and the end, away from the rotary joint component 5, of the first shaft hole on the roller shaft 1 is sealed through the plug, so that the cutting liquid flowing out from the liquid outlet 23 can flow into the gap between the pull rod 2 and the inner wall of the first shaft hole, namely, the second channel 24. One end of the pull rod 2, which is far away from the first bearing box 3, extends out of the first shaft hole, the nut 561 is screwed on the portion of the pull rod extending out of the first shaft hole and abuts against the first plug 12, an outlet of the cutting fluid supply device is communicated with the liquid inlet 22, and an inlet of the cutting fluid supply device is communicated with a connecting hole in the first plug 12, so that the cutting fluid in the second channel 24 can flow back into the cutting fluid supply device through the through hole, the cavity and the liquid return port.

Of course, the above alternative embodiments, and the alternative embodiments and the preferred embodiments can also be used in a cross-matching manner, so that a new embodiment is combined to be suitable for a more specific application scenario.

Those skilled in the art will appreciate that although some embodiments described herein include some features included in other embodiments instead of others, combinations of features of different embodiments are meant to be within the scope of the application and form different embodiments. For example, in the claims of the present application, any of the claimed embodiments may be used in any combination.

So far, the technical solutions of the present application have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present application is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the present application, and the technical scheme after the changes or substitutions will fall into the protection scope of the present application.

Claims

1. A roller assembly, comprising:

the roller shaft is provided with a first shaft hole;

the pull rod is used for axially locking the roll shaft, at least part of the pull rod is inserted into the first shaft hole, a first channel is arranged in the pull rod, and a liquid inlet and a liquid outlet which are communicated with the first channel are respectively arranged on the pull rod; the pull rod with there is the clearance between the first shaft hole to as the second passageway, the inlet communicates with cutting fluid feeding device's export, the liquid outlet with the first end intercommunication of second passageway, the second end of second passageway with cutting fluid feeding device's import intercommunication.

2. The roll shaft assembly of claim 1 further comprising a first connection, the first connection being connected to the first end of the roll shaft, the first connection having a third channel disposed thereon, the first end of the third channel being in communication with the first channel via the liquid outlet, and the second end of the third channel being in communication with the second channel.

3. A roller assembly according to claim 2, wherein said pull rod is connected to said third passage in part, and said liquid outlet is located in the part of said pull rod connected to said third passage.

4. The roller assembly according to claim 3, wherein the first connecting portion is a first bearing housing, a first rotating shaft of the first bearing housing is connected with the roller shaft, and the third passage is provided at an end of the first rotating shaft close to the roller shaft.

5. The roller assembly of claim 4, wherein the third channel comprises a first channel and a second channel that open at an end of the first rotating shaft near the roller shaft, the first channel being disposed along an axis of the first rotating shaft, a first end of the first channel being in communication with the liquid outlet, a second end of the first channel being in communication with a first end of the second channel, and a second end of the second channel being in communication with the second channel.

6. The roller assembly of claim 5, wherein said third passageway further comprises a radial port radially opened from an outer circumferential side of said first rotating shaft, said radial port communicating a second end of said first port with a first end of said second port, an end of said radial port on said outer circumferential side being blocked; or

The second hole passage is arranged obliquely so that a first end of the second hole passage is in direct communication with a second end of the first hole passage.

7. A roller assembly according to claim 5, characterised in that the end of the tie rod near the first axis of rotation is in threaded engagement with the first end of the first aperture and/or

8. The roller shaft assembly of any one of claims 2 to 7, further comprising a second connecting portion connected to an end of the roller shaft remote from the first connecting portion, wherein a second shaft hole is provided in the second connecting portion, a first end of the second shaft hole communicates with a second end of the second channel, and a second end of the second shaft hole communicates with an inlet of the cutting fluid supply device.

9. The roller assembly according to claim 8, wherein a portion of the pull rod, which is far away from the first connecting portion, extends out of the first shaft hole, a portion of the pull rod, which extends out of the first shaft hole, is inserted into the second shaft hole, a gap exists between the second shaft hole and the pull rod to serve as a fifth channel, a first end of the fifth channel is communicated with a second end of the second channel, and a second end of the fifth channel is communicated with an inlet of the cutting fluid supply device.

10. The roller assembly according to claim 8, wherein the second connecting portion is a second bearing housing having a second rotation shaft connected to the roller shaft, the second rotation shaft having the second shaft hole provided therein.

11. The roller shaft assembly of claim 9 further comprising a third connecting portion connected to an end of the second connecting portion remote from the roller shaft; and a sixth channel is arranged on the third connecting part, the first end of the sixth channel is communicated with the second end of the fifth channel, and the second end of the sixth channel is communicated with the inlet of the cutting fluid supply device.

12. The roller shaft assembly of claim 11, wherein the third connecting portion is a rotary joint assembly, the rotary joint assembly includes a casing and a third rotating shaft disposed in an inner cavity of the casing, the third rotating shaft is connected to an end of the second connecting portion away from the roller shaft, a third shaft hole is disposed on the third rotating shaft, the sixth passage includes the third shaft hole and the inner cavity of the casing, a first end of the third shaft hole is communicated with a second end of the fifth passage, a second end of the third shaft hole is communicated with the inner cavity of the casing, and the inner cavity of the casing is communicated with the inlet of the cutting fluid supply device.

13. The roller axle assembly of claim 12, wherein a portion of said tie bar remote from said first connection extends through said second axle bore and is inserted into said third axle bore, a gap exists between said third axle bore and said tie bar, said gap communicating with an interior cavity of said outer sleeve to form said sixth passageway.

14. A roller assembly according to claim 13, wherein the outer circumferential side of the third rotary shaft is radially provided with a through hole, and the gap between the third shaft hole and the pull rod is communicated with the inner cavity of the outer sleeve through the through hole to form the sixth passage.

15. The roller assembly of claim 14, wherein a fluid return port is provided on the outer sleeve, and the inner cavity of the outer sleeve is in communication with the inlet of the cutting fluid supply device through the fluid return port.

16. A roller axle assembly according to claim 15, wherein a liquid injection port which is not communicated with the liquid return port is further provided on the outer sleeve, and the liquid inlet is communicated with an outlet of the cutting liquid supply device through the liquid injection port.

17. The roller assembly according to claim 16, further comprising a separation member, wherein the separation member is sleeved on the third rotating shaft and abuts against an inner wall of the outer sleeve, so as to separate the outer sleeve into a first inner cavity, a gap between the third shaft hole and the pull rod is communicated with the first inner cavity through the through hole, and the first inner cavity is communicated with an inlet of the cutting fluid supply device through the fluid return port.

18. A roller axle assembly according to claim 17, wherein said rotary joint assembly further comprises an end cap, said end cap being sealingly fastened to an end of said cover remote from said second connecting portion, whereby said end cap, said cover and said partition member enclose a second inner cavity, a portion of said pull rod remote from said first connecting portion extends through said third axle hole and into said second inner cavity, and said fluid inlet is in communication with said fluid injection port through said second inner cavity.

19. A roller assembly according to claim 18, wherein the rotary joint assembly further comprises a pressing block, the pressing block is sleeved on the portion of the pull rod away from the first connecting portion and pressed against the third rotary shaft, and a nut is screwed on the portion of the pull rod away from the first connecting portion and pressed against the pressing block.

20. A cutting assembly, characterized in that it comprises a roller assembly according to any one of claims 1 to 19.

21. A wire cutting machine comprising a spool assembly according to any one of claims 1 to 19 or a cutting assembly according to claim 20.