CN217914741U

CN217914741U - Polishing grinding head driving device and polishing machine

Info

Publication number: CN217914741U
Application number: CN202221624379.XU
Authority: CN
Inventors: 吴锐明; 隋旭东; 袁金波; 詹新平
Original assignee: Keda Industrial Group Co Ltd
Current assignee: Keda Industrial Group Co Ltd
Priority date: 2022-06-27
Filing date: 2022-06-27
Publication date: 2022-11-29
Anticipated expiration: 2032-06-27

Abstract

The utility model provides a polishing grinding head driving device and a polishing machine, which comprises a main shaft, a polishing grinding head and a polishing wheel head, wherein the main shaft is used for connecting the polishing grinding head; the bearing seat is sleeved outside the main shaft and is rotationally connected with the main shaft; and a stator of the direct drive motor is fixedly connected to the bearing seat, and a rotor of the direct drive motor is sleeved outside the main shaft and is in transmission connection with the main shaft. The utility model discloses an use and directly drive the motor drive main shaft, reduced polishing bistrique drive arrangement's volume and weight greatly, simplified polishing bistrique drive arrangement's overall structure, the simple easy to maintain of assembly has ensured production efficiency when reducing the device fault rate.

Description

Polishing grinding head driving device and polishing machine

Technical Field

The utility model relates to a pottery, stone material polishing technical field especially relate to a polishing bistrique drive arrangement and burnishing machine.

Background

The conventional ceramic polishing grinding head is mostly driven by a motor through a belt to transmit torque, and the driving mode has at least the following defects in production:

1. the belt is easy to wear, and the phenomenon of belt slip can occur after long-time use, and the belt needs to be replaced regularly, so that the normal production efficiency is influenced;

2. the driving device is large in size, inconvenient to install, high in failure rate and capable of increasing the structural complexity of the equipment.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model aims to provide a polishing bistrique drive arrangement, its simple structure, easy to assemble.

Another object of the utility model is to provide a polishing machine, the polishing bistrique drive arrangement of its use is small light in weight, can realize energy-conservation when promoting work efficiency.

The embodiment of the utility model discloses a realize through following technical scheme:

a polishing grinding head driving device comprises a main shaft, a grinding head and a grinding wheel, wherein the main shaft is used for connecting the polishing grinding head; the bearing seat is sleeved outside the main shaft and is rotationally connected with the main shaft; and a stator of the direct drive motor is fixedly connected to the bearing seat, and a rotor of the direct drive motor is sleeved outside the main shaft and is in transmission connection with the main shaft.

According to a preferred embodiment, a rotating shaft sleeve is arranged between the rotor and the main shaft, is sleeved outside the main shaft and is in transmission connection with the main shaft; the rotor is in transmission connection with the rotating shaft sleeve; the main shaft is slidable relative to the rotary sleeve in an axial direction of the rotary sleeve.

According to a preferred embodiment, a drive is further included for driving the spindle so that the spindle can slide relative to the rotating sleeve.

According to a preferred embodiment, a bushing is detachably connected in the rotating shaft sleeve, a guide groove is arranged on the inner wall of the bushing, and a guide block matched with the guide groove is arranged on the main shaft; when the rotating shaft sleeve is sleeved outside the main shaft, the guide block is embedded in the guide groove in a sliding manner.

According to a preferred embodiment, the main shaft is sleeved with a connecting shaft sleeve, and the connecting shaft sleeve is rotatably connected with the main shaft; the upper end of the connecting shaft sleeve is provided with a lower sealing disc, and the spindle is sleeved with an upper sealing disc; the upper sealing disc can rotate along with the main shaft; the lower sealing disc comprises a first body, a first through hole penetrates through the first body, and at least two lower slip rings are arranged on the upper surface of the first body; the upper sealing disc comprises a second body, a second through hole penetrates through the second body, and at least two upper slip rings are arranged on the lower surface of the second body; the main shaft penetrates through the first through hole and the second through hole, and after the lower sealing disc and the upper sealing disc are assembled, the lower slip ring and the upper slip ring are distributed in a staggered mode; the driving end of the driving piece is fixedly connected to the connecting shaft sleeve or the lower sealing disc.

According to a preferred embodiment, a cooling channel is provided in the spindle in the axial direction thereof.

According to a preferred embodiment, a conduit is rotationally nested in the cooling channel, said conduit being fixedly connected to the connecting boss or the lower sealing disk; the conduit is used for externally connecting cooling equipment.

According to a preferred embodiment, a sealing ring is arranged between the conduit and the inner wall of the cooling channel.

According to a preferred embodiment, a bushing is disposed between the rotating shaft sleeve and the main shaft, the bushing is slidably sleeved outside the main shaft, and the bushing is fixedly connected with the rotating shaft sleeve.

A polishing machine comprises a polishing grinding head and the polishing grinding head driving device, wherein the polishing grinding head driving device is used for installing and driving the polishing grinding head. The polishing grinding head driving device is simple in structure and small in size, so that the polishing machine is more energy-saving in the working process.

The utility model discloses technical scheme has following advantage and beneficial effect at least:

the utility model provides a polishing bistrique drive arrangement directly drives motor drive main shaft through the use, has reduced polishing bistrique drive arrangement's volume and weight greatly, has simplified polishing bistrique drive arrangement's overall structure, assembles simple easy to maintain, has ensured production efficiency when reducing the device fault rate.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic cross-sectional structural view of a polishing grinding head driving device provided in an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of the structure of FIG. 1 at A;

FIG. 3 is a schematic view of a portion of the structure at B in FIG. 1;

FIG. 4 is an enlarged view of a portion of the structure of FIG. 1 at C;

fig. 5 is a schematic perspective view of an upper sealing disc provided by an embodiment of the present invention;

fig. 6 is a schematic perspective view of a lower sealing disk according to an embodiment of the present invention;

fig. 7 is a schematic perspective view of a polishing grinding head driving device provided by an embodiment of the present invention.

Icon: 1-buffing abrasive heads, 2-first bearings, 3-bushings, 4-rotating bushings, 5-bearing seats, 6-spindles, 601-cooling channels, 7-stators, 8-rotors, 9-flat keys, 10-guide blocks, 11-protective bushings, 12-drives, 13-connecting bushings, 14-conduits, 15-lower sealing disks, 1501-first body, 1502-first through-hole, 1503-lower slip ring, 1504-drainage groove, 16-upper sealing disk, 1601-second body, 1602-second through-hole, 1603-upper slip ring, 17-struts, 18-cover plates, 19-lock cylinders, 1901-inlet, 20-sleeves, 21-limit nuts, 22-second bearings, 23-liner cylinders, 2301-guide grooves, 24-seal rings.

Detailed Description

For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1 to 7, a polishing head driving device includes a main shaft 6 for connecting a polishing head 1; the bearing seat 5 is sleeved outside the main shaft 6 and is rotationally connected with the main shaft 6; and a direct drive motor, wherein a stator 7 of the direct drive motor is fixedly connected to the bearing seat 5, and a rotor 8 is sleeved outside the main shaft 6 and is in transmission connection with the main shaft 6. In the embodiment, the direct drive motor is used for driving the main shaft 6, so that the size and the weight of the polishing grinding head driving device are greatly reduced, the integral structure of the polishing grinding head driving device is simplified, the assembly is simple, the maintenance is easy, the failure rate of the device is reduced, and the production efficiency is guaranteed.

Further, as shown in fig. 1 and 3, a rotating shaft sleeve 4 is disposed between the rotor 8 and the main shaft 6, and the rotating shaft sleeve 4 is sleeved outside the main shaft 6 and is in transmission connection with the main shaft 6; the rotor 8 is in transmission connection with the rotating shaft sleeve 4; the main shaft 6 is slidable relative to the rotary sleeve 4 in the axial direction of the rotary sleeve 4. Specifically, the rotor 8 is in transmission connection with the rotary shaft sleeve 4 through a flat key 9. The rotary sleeve 4 is here rotationally connected to a bearing block 5 via a first bearing 2. The inner wall of the rotating shaft sleeve 4 is fixedly nested with a lining cylinder 23, the main shaft 6 is embedded in the lining cylinder 23, the inner wall of the lining cylinder 23 is provided with a guide groove 2301 along the axial direction of the lining cylinder 23, and the axial direction of the main shaft 6 is parallel to the axial direction of the lining cylinder 23. Further, the main shaft 6 is provided with a guide block 10 adapted to the guide groove 2301; when the rotating sleeve 4 is sleeved outside the main shaft 6, the guide block 10 is slidably inserted into the guide groove 2301.

In this embodiment, the guide groove 2301 is rectangular parallelepiped. Both ends of the guide groove 2301 extend to the end surfaces of the liner 23, and the length of the guide block 10 is greater than the length of the guide groove 2301 (the length of the liner 23). The lining sleeve 23 and the rotary shaft sleeve 4 are detachably connected through bolts or screws, so that the lining sleeve 23 and the rotary shaft sleeve 4 are convenient to detach and replace, and meanwhile, the lining sleeve 23 and the rotary shaft sleeve 4 are convenient to respectively process a key groove matched with the flat key 9 and a guide groove 2301 matched with the guide block 10. Because the guide block 10 is in sliding fit with the guide groove 2301, after the guide block is used for a certain time, the guide groove 2301 is worn to cause reduction of transmission assembly precision, the problem can be avoided by periodically replacing the bushing 23, meanwhile, the bushing 23 is small in size and low in processing cost, and compared with the mode of directly replacing the rotary shaft sleeve 4, the production cost can be effectively reduced.

Of course, in other embodiments, the bushing 23 may be integrally formed with the rotating sleeve 4, that is, the guide groove 2301 may be directly formed on the inner wall of the rotating sleeve 4.

In this embodiment, the guide block 10 is detachably connected to the main shaft 6 by a bolt or a screw, so that the guide block 10 can be easily replaced after being damaged. In other embodiments, the guide block 10 may also be welded to the spindle 6.

As shown in fig. 1 and 7, the polishing grinding head driving apparatus further includes a driving member 12 for driving the main shaft 6 so that the main shaft 6 can slide with respect to the rotary sleeve 4. In this embodiment, the driving member 12 is a cylinder. As shown in fig. 2, after the polishing wheel head 1 is installed and the polishing wheel head driving device is fixed on the frame of the polishing machine, the position between the driving piece 12 and the stator 7 of the direct drive motor is relatively fixed. Furthermore, a connecting shaft sleeve 13 is sleeved outside the main shaft 6, and the connecting shaft sleeve 13 is rotatably connected with the main shaft 6 through a second bearing 22; in order to ensure the coaxiality of the connecting shaft sleeve 13 and the main shaft 6, two second bearings 22 are installed between the connecting shaft sleeve 13 and the main shaft 6, and the two bearings are limited by a sleeve 20.

Furthermore, as shown in fig. 5 and 6, a connecting shaft sleeve 13 is sleeved outside the main shaft 6, and the connecting shaft sleeve 13 is rotatably connected with the main shaft 6; the upper end of the connecting shaft sleeve 13 is provided with a lower sealing disc 15, and an upper sealing disc 16 is sleeved outside the main shaft 6; the upper seal disc 16 can rotate along with the main shaft 6; the lower sealing disk 15 comprises a first body 1501, a first through hole 1502 is arranged on the first body 1501 in a penetrating way, and at least two lower sliding rings 1503 are arranged on the upper surface of the first body 1501; the upper sealing disc 16 comprises a second body 1601, a second through hole 1602 penetrates through the second body 1601, and at least two upper slip rings 1603 are arranged on the lower surface of the second body 1601; the main shaft 6 penetrates through the first through hole 1502 and the second through hole 1602, and after the lower sealing disc 15 and the upper sealing disc 16 are assembled, the lower sliding ring 1503 and the upper sliding ring 1603 are distributed in a staggered mode; the driving end of the driver 12 is fixedly connected to the coupling sleeve 13 or the lower sealing disc 15.

In this embodiment, a stopper nut 21 is threadedly mounted on the upper end of the main shaft 6, the stopper nut 21 is located on the upper side of the upper seal disk 16, and the upper seal disk 16 is stopped by screwing the stopper nut 21 to prevent it from falling off from the upper end of the main shaft 6. Preferably, a rubber gasket is disposed between the retainer nut 21 and the upper seal disk 16 to prevent the retainer nut 21 from crushing the upper seal disk 16.

In use, the main shaft 6 passes through both the first through hole 1502 and the second through hole 1602, and the first through hole 1502 and the second through hole 1602 are coaxial. The upper sliding rings 1603 and the lower sliding rings 1503 can be two or more in one-to-one correspondence, the upper sliding rings 1603 and the lower sliding rings 1503 are nested at intervals, an upper sealing groove is formed between every two adjacent upper sliding rings 1603, a lower sealing groove is formed between every two adjacent lower sliding rings 1503, and external impurities are not prone to entering the second bearing 22 through a gap between the upper sliding rings 1603 and the lower sliding rings 1503 due to the assembling structure that the upper sliding rings 1603 and the lower sliding rings 1503 are nested at intervals.

In this embodiment, the upper slide ring 1603 abuts against the inner ring of the second bearing 22, and the lower slide ring 1503 abuts against the outer ring of the second bearing 22. The outer race of the second bearing 22 is a close fit with the inner wall of the connecting sleeve 13.

In the present embodiment, as shown in fig. 1 and fig. 2, further, a support plate 17 is fixedly mounted on the lower sealing disk 15 by bolts or screws, and a cover plate 18 is fixedly mounted on the support plate 17 by screws or bolts for close protection of the connecting structure of the upper sealing disk 16 and the lower sealing disk 15. In this embodiment, the driving end of the driver 12 is fixedly connected to the support plate 17 for ease of installation. In other embodiments, the drive end of the driver 12 may be fixedly connected to either of the four, as the longitudinal positions between the cover plate 18, the fulcrum plate 17, the lower sealing disk 15 and the connecting boss 13 are relatively fixed, i.e., the four are fixedly connected.

In the embodiment, when the polishing grinding head is used, the direct drive motor is electrified, the rotor 8 rotates and drives the rotary shaft sleeve 4 to synchronously rotate through the flat key 9, and the rotary shaft sleeve 4 is matched with the guide block 10 on the main shaft 6 through the guide groove 2301 on the lining sleeve 23 so as to drive the main shaft 6 to synchronously rotate, so that the polishing grinding head 1 arranged on the main shaft 6 is driven; meanwhile, when it is necessary to lift the polishing head 1 away from the ceramic to be polished or to press the polishing head 1 down close to the ceramic to be polished, the driving member 12 is actuated, the driving end thereof drives the supporting plate 17, and the driving force is transmitted to the main shaft 6 through the lower sealing disk 15, the connecting boss 13 and the second bearing 22 to achieve the longitudinal position adjustment of the polishing head 1. When the polishing grinding head 1 is lifted to be away from the ground ceramic, the driving piece 12 extends, and in the process, the guide block 10 slides upwards in the guide groove 2301, so that the polishing grinding head 1 can be lifted on the premise of not influencing the rotation of the main shaft 6, and further the polishing grinding head 1 is lifted to be away from the ground ceramic; relatively, when pressing down polishing bistrique 1 and making it be close to the pottery of being polished, driving piece 12 shortens, and main shaft 6 and polishing bistrique 1 are under self gravity effect to and under driving piece 12's effect, make main shaft 6 receive along its axial decurrent effort, in-process, guide block 10 is sliding downwards in guide way 2301, thereby can be with pushing down it under the prerequisite that does not influence main shaft 6 pivoted, and then make polishing bistrique 1 be close to the pottery of being polished downwards.

In this embodiment, the matching structure of the guide block 10 and the guide groove 2301 plays a role of sliding guide on one hand and a role of key transmission on the other hand.

In this embodiment, in order to supply the cooling liquid during the operation of the polishing grinding head 1, as shown in fig. 1 and 2, a cooling channel 601 is provided in the spindle 6 along the axial direction thereof. The cooling passage 601 communicates with the polishing head 1. Further, a guide pipe 14 is rotationally nested in the cooling channel 601, and the guide pipe 14 is fixedly connected to the connecting shaft sleeve 13 or the lower sealing disk 15; the conduit 14 is for external cooling equipment. The guide tube 14 is inserted into the cooling channel 601 from the upper end of the main shaft 6, the upper end of the guide tube passes through the cover plate 18, and the guide tube 14 is sealed with the inner wall of the cooling channel 601 by a sealing ring 24. The upper end of the conduit 14 is in threaded connection with a lock cylinder 19, an inlet 1901 is formed in the side wall of the lock cylinder 19, cooling liquid is introduced into the conduit 14 from the inlet 1901 by an external cooling device, and the cooling liquid enters the cooling channel 601 through the conduit 14 and finally reaches the polishing grinding head 1. The sealing ring 24 here prevents the coolant from escaping from the upper end of the cooling channel 601. In actual use, when the seal ring 24 fails, the coolant overflows from the upper end of the cooling passage 601, and the assembled structure of the upper seal disk 16 and the lower seal disk 15 prevents the overflowing coolant from corroding the second bearing 22.

As shown in fig. 6, a drain groove 1504 is formed in the upper surface of the lower seal disk 15, and the drain groove 1504 is provided on the outer side in the circumferential direction of the lower seal disk 15 and communicates with the lower seal groove. In use, the upper seal disk 16 rotates with the main shaft 6, and when coolant overflows from the upper end of the cooling passage 601, the coolant flows into the lower seal disk 15 by the centrifugal force of the rotation of the upper seal disk 16 and overflows through the drainage groove 1504.

In this embodiment, as shown in fig. 1 and 4, the bushing 3 is disposed between the rotating sleeve 4 and the main shaft 6, the bushing 3 is slidably sleeved outside the main shaft 6, and the bushing 3 is fixedly connected to the rotating sleeve 4. The bush 3 here serves to right the spindle 6 at the lower end, prevent it from tilting in the radial direction, ensure the accuracy of the polishing head drive, and function as a sliding bearing. The bush 3 and the rotating shaft sleeve 4 are detachably connected through bolts or screws, when the bush 3 is damaged in the using process and the precision is affected, the bush can be disassembled and replaced, and compared with a mode of directly replacing the rotating shaft sleeve 4, the production cost is saved.

As shown in fig. 1 and 3, a protection sleeve 11 is disposed at an upper end of the rotation sleeve 4, the protection sleeve 11 is sleeved outside the main shaft 6, the upper end of the protection sleeve 11 extends into the connection sleeve 13 from a lower end of the connection sleeve 13, and forms a shield for the main shaft 6 together with the connection sleeve 13, thereby preventing impurities from entering a gap between the guide block 10 and the guide groove 2301.

The embodiment also provides a polishing machine, which comprises a polishing grinding head 1 and the polishing grinding head driving device, wherein the polishing grinding head driving device is used for installing and driving the polishing grinding head 1. The stator 7 of the polishing grinding head driving device and the driving piece 12 are fixedly arranged on a structural member (frame) of the polishing machine. The polishing grinding head driving device is simple in structure and small in size, so that the polishing machine is more energy-saving in the working process.

The technical means disclosed by the scheme of the present invention is not limited to the technical means disclosed by the above embodiments, but also includes the technical scheme formed by the arbitrary combination of the above technical features. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also considered as the protection scope of the present invention.

Claims

1. A polishing head driving device characterized by comprising:

the main shaft (6) is used for connecting the polishing grinding head (1);

the bearing seat (5) is sleeved outside the main shaft (6) and is rotationally connected with the main shaft (6); and

the stator (7) of the direct-drive motor is fixedly connected to the bearing seat (5), and the rotor (8) is sleeved outside the main shaft (6) and is in transmission connection with the main shaft (6).

2. The polishing stone head drive device of claim 1 wherein: a rotating shaft sleeve (4) is arranged between the rotor (8) and the main shaft (6), and the rotating shaft sleeve (4) is sleeved outside the main shaft (6) and is in transmission connection with the main shaft (6);

the rotor (8) is in transmission connection with the rotating shaft sleeve (4);

the main shaft (6) can slide relative to the rotating shaft sleeve (4) along the axial direction of the rotating shaft sleeve (4).

3. The polishing grinding head driving device according to claim 2, wherein: and a driving piece (12) for driving the main shaft (6) to enable the main shaft (6) to slide relative to the rotating shaft sleeve (4).

4. The polishing stone driving device of claim 2 or 3, wherein: a lining cylinder (23) is detachably connected in the rotary shaft sleeve (4), a guide groove (2301) is arranged on the inner wall of the lining cylinder (23), and a guide block (10) matched with the guide groove (2301) is arranged on the main shaft (6);

when the rotating shaft sleeve (4) is sleeved outside the main shaft (6), the guide block (10) is embedded in the guide groove (2301) in a sliding manner.

5. The polishing grinding head driving device according to claim 3, wherein: a connecting shaft sleeve (13) is sleeved outside the main shaft (6), and the connecting shaft sleeve (13) is rotationally connected with the main shaft (6);

a lower sealing disc (15) is arranged at the upper end of the connecting shaft sleeve (13), and an upper sealing disc (16) is sleeved outside the main shaft (6);

the upper sealing disc (16) can rotate along with the main shaft (6);

the lower sealing disc (15) comprises a first body (1501), a first through hole (1502) penetrates through the first body (1501), and at least two lower slip rings (1503) are arranged on the upper surface of the first body (1501);

the upper sealing disc (16) comprises a second body (1601), a second through hole (1602) penetrates through the second body (1601), and at least two upper sliding rings (1603) are arranged on the lower surface of the second body (1601);

the main shaft (6) penetrates through the first through hole (1502) and the second through hole (1602), and after the lower sealing disc (15) and the upper sealing disc (16) are assembled, the lower sliding ring (1503) and the upper sliding ring (1603) are distributed in a staggered mode;

the drive end of the drive element (12) is fixedly connected to the connecting sleeve (13) or the lower sealing disk (15).

6. The polishing grinding head driving device according to claim 5, wherein: and a cooling channel (601) penetrates through the main shaft (6) along the axial direction of the main shaft.

7. The polishing grinding head driving device according to claim 6, wherein: a guide pipe (14) is rotationally nested in the cooling channel (601), and the guide pipe (14) is fixedly connected to the connecting shaft sleeve (13) or the lower sealing disc (15);

the conduit (14) is for externally connecting a cooling device.

8. The polishing stone head drive arrangement of claim 7, wherein: a sealing ring (24) is arranged between the guide pipe (14) and the inner wall of the cooling channel (601).

9. The polishing grinding head driving device according to claim 8, wherein: rotatory axle sleeve (4) with dispose bush (3) between main shaft (6), bush (3) sliding sleeve is located outside main shaft (6), bush (3) with rotatory axle sleeve (4) fixed connection.

10. A polishing machine is characterized in that: comprising a polishing abrasive head and a polishing abrasive head driving device according to any one of claims 1 to 9 for mounting and driving the polishing abrasive head (1).