CN218132959U - Oil coating device for inner wall and outer wall of bushing - Google Patents

Abstract

The utility model relates to a bushing inner and outer wall surface oiling device, which comprises an inner wall surface oiling station and an outer wall surface oiling station which are arranged in the front and the back, wherein the front end of the inner wall surface oiling station is connected with an upper chute, and a lower chute is connected between the inner wall surface oiling station and the outer wall surface oiling station; the height of the upper sliding chute is higher than that of the lower sliding chute, and the upper sliding chute and the lower sliding chute both have a tendency of inclining backwards and downwards; the inner wall surface oiling station comprises a supporting rotating mechanism which horizontally supports the bushing and drives the bushing to rotate automatically, and further comprises a rolling brush body which is arranged in parallel with the axial direction of the bushing, wherein the outer wall surface of the rolling brush body is attached to the inner wall surface of the bushing and rotates automatically; the outer wall surface oiling station comprises atomizing nozzles which are arranged in an up-down opposite mode, and the two groups of atomizing nozzles spray oil to the bushing in conveying from the up-down direction; thereby through the automatic mode of internal face fat liquoring, outer wall oil spout, realized the oiling on bush surface, efficient, effectual, the practicality is good.

Description

Oil coating device for inner wall and outer wall of bushing

Technical Field

The utility model belongs to the technical field of automatic fat liquoring equipment technique and specifically relates to a bush inside and outside wall face painting device.

Background

Before the bushing parts are packed and delivered, integral rust prevention treatment is needed; the current bushing or similar products are coated with rust preventive oil on the surface of parts by a manual or semi-automatic manual mode.

The existing oiling mode is difficult to control the oil quantity, uneven oil liquid is smeared, even oil drops in a plurality of places, and an operator can be fully stained with the oil liquid; on the other hand, the whole efficiency is low, the environment is severe, the problems of potential safety hazards, occupational diseases of personnel and the like exist, and meanwhile, the method is not suitable for matching and using of automatic equipment.

SUMMERY OF THE UTILITY MODEL

The applicant provides a lining inner and outer wall surface oiling device with a reasonable structure aiming at the defects in the prior art, so that the inner wall surface is oiled and the outer wall surface is sprayed with oil in an automatic mode, the lining surface oiling efficiency is high, the effect is good, and the overall practicability is good.

The utility model discloses the technical scheme who adopts as follows:

an inner wall surface and outer wall surface oiling device for a bushing comprises an inner wall surface oiling station and an outer wall surface oiling station which are arranged in front and at back, wherein the front end of the inner wall surface oiling station is connected with an upper chute, and a lower chute is connected between the inner wall surface oiling station and the outer wall surface oiling station; the height of the upper chute is higher than that of the lower chute, and the upper chute and the lower chute both have a backward and downward inclination trend; the inner wall surface oiling station comprises a supporting and rotating mechanism which horizontally supports the bushing and drives the bushing to rotate automatically, and further comprises a rolling brush body which is axially parallel to the bushing, wherein the outer wall surface of the rolling brush body is attached to the inner wall surface of the bushing and rotates automatically; the outer wall surface oiling station comprises atomizing nozzles which are arranged in an up-down opposite mode, and two groups of atomizing nozzles spray oil to the bushing in conveying from an upper direction and a lower direction.

As a further improvement of the technical scheme:

the supporting and rotating mechanism is located between the tail end of the upper sliding chute and the front end of the lower sliding chute in height, the upper sliding chute enables the bushings to be orderly and horizontally arranged and fall onto the supporting and rotating mechanism, and after the inner wall surface of the bushing is oiled, the supporting and rotating mechanism loosens the bushings to enable the bushings to fall into the lower sliding chute.

The material limiting and pressing mechanism comprises two groups of baffles which are vertically arranged at intervals, the two groups of baffles are driven by corresponding descending cylinders to move up and down respectively, the two groups of baffles are positioned at the tail end of the upper chute, and the two groups of baffles just isolate the last bushing positioned at the tail end of the upper chute from front to back; the hydraulic buffer is positioned behind the rear baffle plate, moves up and down synchronously with the baffle plate, and the bottom end of the hydraulic buffer faces downwards to the lining supported on the supporting and rotating mechanism.

The rolling brush body is arranged on the rolling brush transfer rotating mechanism, the rolling brush transfer rotating mechanism comprises a rolling brush moving mechanism for driving the rolling brush body to be close to or far away from the bush, a rolling brush rotating mechanism for driving the rolling brush body to rotate, and an oil supply mechanism, and the oil supply mechanism drips oil towards the rolling brush body through an oil guide component.

One end of the oil guiding component is communicated to the inside of the oil supply mechanism, the other end of the oil guiding component extends to face the outer wall surface of the rolling brush body, and an oil dripping groove is formed right below the rolling brush body.

The structure of the rolling brush moving mechanism is as follows: the device comprises a bracket, wherein a lifting module is vertically arranged on the side surface of the bracket, a lifting seat is movably arranged on the lifting module, and a translation cylinder and a translation track are arranged on the side surface of the lifting seat in parallel at intervals up and down; the output end of the translation cylinder is fixedly installed with a translation seat of the rolling brush rotating mechanism, and the translation seat is assembled with a translation rail in a sliding manner;

the structure of the rolling brush rotating mechanism is as follows: including the translation seat, rotate on the translation seat and install the pivot, the pivot is fixed with the round brush body towards the tip suit of bush, and the belt drive assembly is installed in the link up of the pivot other end, and the pivot is driven through belt drive assembly by power unit and is rotated.

The supporting and rotating mechanism comprises two groups of supporting cylinders which are arranged in parallel at intervals, the bushing is supported above the interval of the two groups of supporting cylinders in parallel, and one of the supporting cylinders is driven by the rotating motor to rotate by taking the self axial direction as the center of a circle; the two groups of supporting cylinders are respectively rotatably arranged on the supporting seats, the supporting seats are jointly arranged on the top surface of the supporting seat through the sliding support of the adjusting track, and the two groups of supporting seats move towards or away from each other along the adjusting track under the drive of power; the right lower parts of the two groups of supporting cylinders are right opposite to the front end part of the lower chute.

The tail end of the lower chute is connected with a mesh belt conveying mechanism in an outer wall surface oil coating station, the mesh belt conveying mechanism comprises a mesh belt supporting a lining, and the mesh belt is driven by a transmission power assembly to transmit backwards; the atomizing nozzles are respectively arranged above and below the mesh belt.

The atomizing nozzle input communicates to the oil tank through the oil pump, is provided with the level gauge on the oil tank, constitutes atomizing oil spout subassembly.

The mesh belt conveying mechanism is contained between the upper housing and the lower housing, a mist collecting device is further installed at the top of the upper housing, and the input end of the mist collecting device extends into the upper housing.

The utility model has the advantages as follows:

the utility model has compact and reasonable structure, convenient operation, even and reliable oiling of the surface of the bush in an automatic way by arranging the double stations which are mutually linked, high efficiency and good effect, is also suitable for other cylindrical parts which are similar to the bush structure, convenient and fast and has good practicability;

the utility model discloses still include following advantage:

the feeding and mutual linking transfer of the two stations are realized through the upper chute and the lower chute which are obliquely arranged, the characteristic of the cylindrical wall surface of the lining is ingeniously utilized, unpowered automatic arrangement and oblique transfer conveying are adopted, the structure is ingeniously simplified under the condition of reliably guaranteeing use, and the layout is optimized.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of another view angle of the present invention.

Fig. 3 is a schematic structural view of the inner wall surface oiling station of the utility model.

Fig. 4 is an installation schematic diagram of the upper and lower chutes, the supporting and rotating mechanism and the material limiting and pressing mechanism of the present invention.

Fig. 5 is a schematic structural diagram of the supporting and rotating mechanism of the present invention.

Fig. 6 is a schematic structural view of the rolling brush transfer rotating mechanism of the present invention.

Fig. 7 is a schematic structural diagram of the rolling brush moving mechanism and the rolling brush rotating mechanism of the present invention.

Fig. 8 is a schematic structural diagram of the outer wall surface oiling station of the utility model.

Wherein: 11. a working platform; 12. a high frame; 13. a lower frame; 14. an extension frame;

21. an upper chute; 22. a lower chute;

3. a support rotation mechanism; 31. a support; 32. adjusting the track; 33. adjusting the motor; 34. a supporting seat; 35. a rotating shaft; 36. a support cylinder; 37. rotating the motor;

4. a material limiting and pressing mechanism; 41. a right-angle frame; 42. a down cylinder; 43. a hydraulic buffer; 44. a baffle plate;

5. a rolling brush transfer rotating mechanism; 51. a rolling brush moving mechanism; 52. a rolling brush rotating mechanism; 53. an oil guide assembly; 54. an oil supply mechanism; 55. an oil dripping groove;

511. a support; 512. a lifting module; 513. translating the rail; 514. a lifting seat; 515. a translation cylinder; 521. a translation seat; 522. a belt drive assembly; 523. a power mechanism; 524. a rolling brush body;

6. a mesh belt conveying mechanism; 61. a mesh belt; 62. a transmission power assembly;

7. an upper housing; 71. a lower housing; 8. a mist collection device;

91. an oil tank; 92. an oil pump; 93. a liquid level meter; 94. an atomizing nozzle;

10. a bushing.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

As shown in fig. 1 and 2, the bushing inner and outer wall surface oiling device of the present embodiment includes an inner wall surface oiling station and an outer wall surface oiling station which are arranged in front and behind, the front end of the inner wall surface oiling station is connected with an upper chute 21, and a lower chute 22 is connected between the inner wall surface oiling station and the outer wall surface oiling station; the height of the upper chute 21 is higher than that of the lower chute 22, and both of the upper chute and the lower chute are inclined backwards and downwards; the inner wall surface oiling station comprises a supporting rotating mechanism 3, the supporting rotating mechanism 3 horizontally supports the bushing 10 and drives the bushing to rotate automatically, and the inner wall surface oiling station also comprises a rolling brush body 524 which is axially parallel to the bushing 10, and the outer wall surface of the rolling brush body 524 is attached to the inner wall surface of the bushing 10 and rotates automatically; the outer wall surface oiling station comprises atomizing nozzles 94 which are arranged in an up-down opposite mode, and two groups of atomizing nozzles 94 spray oil towards the bushing 10 in conveying from the up-down direction.

In this embodiment, the inner wall surface of the bushing 10 is oiled and the outer wall surface is oiled by the mutually-connected double-station arrangement, so that the uniform and reliable oiling of the surface of the bushing 10 is realized in an automatic manner

Particularly, the arrangement of the upper chute 21 and the lower chute 22 which are inclined backwards realizes the feeding and mutual connection transfer of two stations, the characteristics of the cylindrical wall surface of the bushing 10 are skillfully utilized, unpowered automatic arrangement and inclined transfer conveying are adopted, the structure is skillfully simplified and the layout is optimized under the condition of reliably ensuring the use, and the device is also suitable for other cylindrical parts with the structure similar to that of the bushing 10.

Further, as shown in fig. 3 and 4, the supporting and rotating mechanism 3 is located between the tail end of the upper chute 21 and the front end of the lower chute 22 in height, the upper chute 21 orderly and horizontally arranges the bushings 10 and drops the bushings onto the supporting and rotating mechanism 3, and after the oil coating on the inner wall surface of the bushing 10 is finished, the supporting and rotating mechanism 3 releases the bushing 10 and drops the bushing into the lower chute 22; thereby realizing the unpowered feeding and the station transfer of the bush 10 and having ingenious and reasonable layout.

In order to make the feeding to the supporting and rotating mechanism 3 through the upper chute 21 more stable and reliable and ensure the feeding of a single liner 10 during the falling, further, the embodiment further comprises a material limiting and pressing mechanism 4, the material limiting and pressing mechanism 4 comprises two groups of baffles 44 vertically arranged at intervals, the two groups of baffles 44 are driven by corresponding descending cylinders 42 to move up and down respectively, the two groups of baffles 44 are positioned at the tail end of the upper chute 21, and the two groups of baffles 44 just isolate the last liner 10 positioned at the tail end of the upper chute 21 from each other front and back; that is, the spacing distance between the two sets of baffles 44 is consistent with the diameter size of a single bushing 10, so that the bushings 10 falling on the upper chute 21 toward the support rotating mechanism 3 are stably ensured to be single by matching the upward and downward movements of the baffles 44;

specifically, the action matching of the two sets of baffles 44 may be: the rear baffle 44 is in a low position, the front baffle 44 is also in a low position, at this time, a bush 10 is arranged at the tail end of the upper chute 21 between the two groups of baffles 44, and the bush 10 is not arranged on the rear supporting rotating mechanism 3; then, the rear baffle 44 moves upward, so that the bush 10 at the tail end is unblocked and slides down to the support rotating mechanism 3; then, the rear stop 44 moves downward, the upper stop 44 moves upward, so that the bushings 10 on the upper chute 21 move downward by one, and finally the lower stop 44 moves downward to stop, thereby reliably ensuring that the material is continuously and individually fed through the upper chute 21 toward the support and rotation mechanism 3.

Further, a hydraulic buffer 43 is provided behind the rear baffle 44, the hydraulic buffer 43 moves up and down synchronously with the baffle 44, and the bottom end of the hydraulic buffer 43 faces downward and is opposite to the bush 10 supported on the supporting and rotating mechanism 3; when the hydraulic shock absorber 43 moves downward, it urges the bush 10 on the lower support turning mechanism 3 downward, and the bush 10 can be stably positioned between the two support cylinders 36 supporting the turning mechanism 3.

In this embodiment, the descending cylinders 42 corresponding to the two sets of baffles 44 are installed on the right-angle frame 41 which is horizontally arranged, and the right-angle frame 41 can be installed on the support 511 of the rolling brush transfer rotating mechanism 5 and fixed relatively.

Specifically, as shown in fig. 6, the rolling brush body 524 is mounted on the rolling brush transfer rotating mechanism 5, the rolling brush transfer rotating mechanism 5 includes a rolling brush moving mechanism 51 for driving the rolling brush body 524 to approach or separate from the bush 10, a rolling brush rotating mechanism 52 for driving the rolling brush body 524 to rotate, and an oil supplying mechanism 54, and the oil supplying mechanism 54 drips oil onto the rolling brush body 524 through an oil guiding component 53.

Furthermore, one end of the oil guiding assembly 53 is communicated to the inside of the oil supply mechanism 54, the other end of the oil guiding assembly 53 extends to face the outer wall surface of the rolling brush body 524, and an oil dripping groove 55 is arranged right below the rolling brush body 524 to collect excess oil falling from the rolling brush body 524 or the output end of the oil guiding assembly 53 during use.

Further, as shown in fig. 7, the roller brush moving mechanism 51 has a structure in which: the device comprises a bracket 511, wherein a lifting module 512 is vertically arranged on the side surface of the bracket 511, a lifting seat 514 is movably arranged on the lifting module 512, and a translation cylinder 515 and a translation rail 513 are arranged on the side surface of the lifting seat 514 in parallel at an interval from top to bottom; the output end of the translation cylinder 515 is fixedly installed with a translation seat 521 of the rolling brush rotating mechanism 52, and the translation seat 521 is assembled with the translation track 513 in a sliding manner;

the structure of the rolling brush rotating mechanism 52 is: including translation seat 521, the pivot is installed in the rotation on translation seat 521, and the pivot is fixed with the round brush body 524 towards the tip suit of bush 10, and the belt drive assembly 522 is installed in the link up of the pivot other end, and the pivot is driven by power unit 523 through belt drive assembly 522 and is rotated.

In this embodiment, the oil guiding assembly 53 is fixedly mounted with respect to the bracket 511 of the rolling brush moving mechanism 51, the oil supplying mechanism 54 is a conventional pressure tank which extrudes a solution toward the oil guiding assembly 53 by the action of external compressed air, the oil guiding assembly 53 includes a communicating pipe and a series-connected valve set, the valve set is controlled by a control system to operate, and oil is dripped toward the rolling brush body 524 through the gap of the pipe.

As shown in fig. 5, in one embodiment, the supporting rotation mechanism 3 includes two sets of supporting cylinders 36 arranged in parallel at intervals, the bushing 10 is supported in parallel above the intervals of the two sets of supporting cylinders 36, so that the bushing 10 is supported by the two sets of supporting cylinders 36, one of the supporting cylinders 36 is driven by the rotation motor 37 to rotate around its own axial direction, and thus the bushing 10 can be driven by friction to rotate in a synchronous manner; the two groups of supporting cylinders 36 are respectively rotatably mounted on the supporting seats 34, the supporting seats 34 are jointly mounted on the top surface of the supporting seat 31 through the sliding support of the adjusting track 32, and the two groups of supporting seats 34 move towards or away from each other along the adjusting track 32 under the driving of power, so that the adjustment of the spacing distance between the two groups of supporting cylinders 36 is realized; the two sets of support cylinders 36 are directly below and directly opposite to the front end of the lower chute 22, and as the space between the two sets of support cylinders 36 increases, the bushings 10 supported together above fall from the space, fall to the lower chute 22 and flow backwards along with the same.

In this embodiment, the two sets of supporting seats 34 are slidably assembled on the top surface of the support 31 through the adjusting track 32, and the distance between the two sets of supporting cylinders 36 is adjusted by adjusting the spacing distance between the two sets of supporting seats 34, so that the support is suitable for reliable support of bushings 10 with different diameters; on the other hand, the jointly supported liner 10 can also be lowered and smoothly transferred back by moving the supporting cylinders 36 away from each other.

In this embodiment, a rotating shaft 35 is installed through the center of a single supporting cylinder 36, one end of the rotating shaft 35 is sleeved with the fixed supporting cylinder 36, the other end of the rotating shaft 35 is rotatably installed on the supporting seat 34, the rotating installation of the supporting cylinder 36 relative to the supporting seat 34 is realized through the arrangement of the rotating shaft 35, one of the rotating shafts 35 is connected with a rotating motor 37 and is driven to rotate, and therefore the corresponding supporting cylinder 36 rotates synchronously.

As an implementation manner of the relative movement of the two sets of supporting seats 34 in this embodiment, a lead screw vertically penetrates through the two sets of supporting seats 34, and two ends of the lead screw are provided with reverse threads and are matched with corresponding screw pairs of the supporting seats 34; the screw rod is driven by the adjusting motor 33 to rotate, so that along with the rotation of the screw rod, two groups of supporting seats 34 which are spirally assembled with the screw rod move towards or away from each other by taking the adjusting track 32 as a guide;

as another implementation manner of the relative movement of the two sets of supporting seats 34 in the present embodiment, the two sets of supporting seats 34 may also be driven by respective corresponding powers to move closer or farther, or only one of the supporting seats 34 moves while the other is fixed; the power drive can be a cylinder, an oil cylinder, an electric cylinder and the like which directly output linear motion.

Further, the tail end of the lower chute 22 is connected with the mesh belt conveying mechanism 6 in the outer wall surface oiling station, as shown in fig. 8, the mesh belt conveying mechanism 6 comprises a mesh belt 61 for supporting the bushing 10, and the mesh belt 61 is driven by the transmission power assembly 62 to transmit backwards; the atomizing nozzles 94 are disposed above and below the mesh belt 61, respectively.

In this embodiment, the mesh belt 61 is provided not only to support the liner 10 and feed it backward, but also not to affect the oil injection of the atomizing nozzles 94, especially the lower atomizing nozzles 94, to the outer wall surface of the liner 10.

The input end of the atomizing nozzle 94 is communicated to the oil tank 91 through the oil pump 92, and the oil tank 91 is provided with a liquid level meter 93 to form an atomizing oil injection assembly.

The mesh belt conveying mechanism 6 is contained between an upper housing 7 and a lower housing 71, a mist collecting device 8 is further installed at the top of the upper housing 7, and the input end of the mist collecting device 8 extends into the upper housing 7.

In this embodiment, a high frame 12 and a low frame 13 are arranged at intervals, the upper chute 21 and the inner wall surface oiling station are arranged on the working platform 11 on the top surface of the high frame 12, and the low frame 13 is used for supporting and installing the outer wall surface oiling station, namely the lower housing 71 and the mesh belt conveying mechanism 6; the lower chute 22 is obliquely connected between the two stations; an extension frame 14 is laterally arranged on the side surface of the lower frame 13, and an oil tank 91 and an oil pump 92 are arranged on the extension frame 14.

The utility model discloses a use-way does:

manually arranging and placing the bushings 10 to be oiled in the upper chute 21, enabling the bushings 10 to move backwards along with the inclination of the upper chute 21, and enabling the last bushing 10 on the upper chute 21 to continuously and sequentially fall onto two groups of supporting cylinders 36 in the supporting and rotating mechanism 3 by matching with the action of the material limiting and pressing mechanism 4, and driving the bushings 10 to synchronously and automatically rotate along with the rotation of one supporting cylinder 36;

the rolling brush moving mechanism 51 drives the rolling brush body 524 to extend into the bushing 10 on the supporting cylinder 36 through horizontal movement; the rolling brush moving mechanism 51 drives the outer wall surface of the rolling brush body 524 to be attached to the inner wall surface of the bushing 10 through vertical movement;

the rolling brush rotating mechanism 52 drives the rolling brush body 524 to rotate, and along with the respective self-rotation of the rolling brush body 524 and the bushing 10, the outer wall surface of the rolling brush body 524 is tightly attached to the inner wall surface of the bushing 10, and simultaneously, the inner wall surface attached to the bushing 10 is coated with oil; when the bushing 10 rotates more than one circle, the inner wall is oiled; the rotation times and time during oiling can be set according to actual requirements;

the two supporting cylinders 36 in the supporting and rotating mechanism 3 are away from each other, so that the bushings 10 fall down into the lower chute 22 from between, and the bushings 10 are turned backwards to the mesh belt 61 of the mesh belt conveying mechanism 6 along with the inclination of the lower chute 22;

with the continuous work of the transmission power assembly 62, the bushing 10 flows backwards along with the mesh belt 61, when the bushing flows through the atomizing nozzles 94, the outer wall surface of the bushing 10 is sprayed with oil by the upper and lower groups of atomizing nozzles 94, and the bushing continues to flow backwards along with the mesh belt 61 until the working procedure is finished or the material is discharged into a material frame; thereby completing the oiling of the inner and outer wall surfaces of the liner 10.

The utility model discloses can be fast, reliably, evenly carry out the fat liquoring to the bushing inner and outer wall through automatic mode, also be applicable to other section of thick bamboo type parts similar with the bush structure, convenient and reliable, the practicality is good, has effectively reduced manual work intensity.

The above description is for the purpose of explanation and not limitation of the invention, which is defined in the claims, and any modifications may be made within the scope of the invention.

Claims (10)

1. The utility model provides a lining inside and outside wall face painting device which characterized in that: the device comprises an inner wall surface oiling station and an outer wall surface oiling station which are arranged in front and back, wherein the front end of the inner wall surface oiling station is connected with an upper chute (21), and a lower chute (22) is connected between the inner wall surface oiling station and the outer wall surface oiling station; the height of the upper sliding chute (21) is higher than that of the lower sliding chute (22), and the upper sliding chute and the lower sliding chute both have a tendency of inclining backwards and downwards; the inner wall surface oiling station comprises a supporting rotating mechanism (3), the supporting rotating mechanism (3) horizontally supports the bushing (10) and drives the bushing to rotate automatically, and the inner wall surface oiling station also comprises a rolling brush body (524) which is axially parallel to the bushing (10), and the outer wall surface of the rolling brush body (524) is attached to the inner wall surface of the bushing (10) and rotates automatically; the outer wall surface oiling station comprises atomizing nozzles (94) which are arranged in an up-down opposite mode, and two groups of atomizing nozzles (94) spray oil to the conveying lining (10) from an upper direction and a lower direction.

2. The apparatus for coating the inner and outer walls of a liner as claimed in claim 1, wherein: the supporting and rotating mechanism (3) is located between the tail end of the upper sliding groove (21) and the front end of the lower sliding groove (22) in height, the upper sliding groove (21) enables the bushes (10) to be orderly and horizontally arranged and fall onto the supporting and rotating mechanism (3), and after the inner wall surface of the bush (10) is oiled, the supporting and rotating mechanism (3) loosens the bush (10) to enable the bush to fall into the lower sliding groove (22).

3. The apparatus for coating the inner and outer walls of a liner as claimed in claim 1, wherein: the material limiting and pressing mechanism (4) is further included, the material limiting and pressing mechanism (4) comprises two groups of baffles (44) which are vertically arranged at intervals, the two groups of baffles (44) are driven by corresponding descending cylinders (42) to move up and down respectively, the two groups of baffles (44) are positioned at the tail end of the upper chute (21), and the two groups of baffles (44) just isolate the last bushing (10) positioned at the tail end of the upper chute (21) from front to back; the hydraulic buffer device also comprises a hydraulic buffer (43) positioned behind the rear baffle plate (44), wherein the hydraulic buffer (43) moves up and down synchronously with the baffle plate (44), and the bottom end of the hydraulic buffer (43) faces downwards and is right opposite to the bushing (10) supported on the supporting and rotating mechanism (3).

4. The apparatus for coating inner and outer walls of a liner as claimed in claim 1, wherein: the rolling brush body (524) is arranged on a rolling brush transfer rotating mechanism (5), the rolling brush transfer rotating mechanism (5) comprises a rolling brush moving mechanism (51) for driving the rolling brush body (524) to approach or be far away from the bush (10), a rolling brush rotating mechanism (52) for driving the rolling brush body (524) to rotate automatically, and an oil supply mechanism (54), and the oil supply mechanism (54) drips oil towards the rolling brush body (524) through an oil guide component (53).

5. The apparatus for coating inner and outer walls of a liner as claimed in claim 4, wherein: one end of the oil guiding component (53) is communicated to the inside of the oil supply mechanism (54), the other end of the oil guiding component (53) extends to face the outer wall surface of the rolling brush body (524), and an oil dripping groove (55) is arranged right below the rolling brush body (524).

6. The apparatus for coating inner and outer walls of a liner as claimed in claim 4, wherein: the structure of the rolling brush moving mechanism (51) is as follows: the device comprises a bracket (511), wherein a lifting module (512) is vertically arranged on the side surface of the bracket (511), a lifting seat (514) is movably arranged on the lifting module (512), and a translation cylinder (515) and a translation rail (513) are arranged on the side surface of the lifting seat (514) at intervals in parallel up and down; the output end of the translation cylinder (515) is fixedly installed with a translation seat (521) of the rolling brush rotating mechanism (52), and the translation seat (521) is assembled with a translation track (513) in a sliding mode;

the structure of the rolling brush rotating mechanism (52) is as follows: including translation seat (521), rotate on translation seat (521) and install the pivot, the pivot is fixed with round brush body (524) towards the tip suit of bush (10), and the pivot other end links up installs belt drive assembly (522), and the pivot is driven the rotation by power unit (523) through belt drive assembly (522).

7. The apparatus for coating the inner and outer walls of a liner as claimed in claim 1, wherein: the supporting and rotating mechanism (3) comprises two groups of supporting cylinders (36) which are arranged in parallel at intervals, the bushing (10) is supported above the intervals of the two groups of supporting cylinders (36) in parallel, and one supporting cylinder (36) rotates by taking the self axial direction as a circle center under the driving of a rotating motor (37); the two groups of supporting cylinders (36) are respectively and rotatably arranged on the supporting seats (34), the supporting seats (34) are jointly and slidably supported and arranged on the top surface of the support (31) through the adjusting track (32), and the two groups of supporting seats (34) move towards or away from each other along the adjusting track (32) under the driving of power; the lower part of the two groups of supporting cylinders (36) is just opposite to the front end part of the lower chute (22).

8. The apparatus for coating inner and outer walls of a liner as claimed in claim 1, wherein: the tail end of the lower chute (22) is connected with a mesh belt conveying mechanism (6) in an outer wall surface oiling station, the mesh belt conveying mechanism (6) comprises a mesh belt (61) for supporting a lining (10), and the mesh belt (61) is driven by a transmission power assembly (62) to transmit backwards; the atomizing nozzles (94) are respectively arranged above and below the mesh belt (61).

9. The apparatus for coating inner and outer walls of a liner as claimed in claim 8, wherein: the input end of the atomizing nozzle (94) is communicated to the oil tank (91) through an oil pump (92), and a liquid level meter (93) is arranged on the oil tank (91) to form an atomizing oil injection assembly.

10. The apparatus for coating inner and outer walls of a liner as claimed in claim 8, wherein: the mesh belt conveying mechanism (6) is contained between the upper housing (7) and the lower housing (71), a mist collecting device (8) is further installed at the top of the upper housing (7), and the input end of the mist collecting device (8) extends into the upper housing (7).

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