CN210261962U

CN210261962U - Vacuum coating device for bearing

Info

Publication number: CN210261962U
Application number: CN201920869827.4U
Authority: CN
Inventors: 陈颋
Original assignee: Ningbo Hechuang Coating Technology Co Ltd
Current assignee: Ningbo Hechuang Coating Technology Co Ltd
Priority date: 2019-06-11
Filing date: 2019-06-11
Publication date: 2020-04-07
Anticipated expiration: 2029-06-11

Abstract

The utility model discloses a vacuum coating device for bearing, include base, coating film jar and follow the driving wheel, be provided with the cotton heat preservation of pottery in the base, be provided with ceramic fibre furnace in the cotton heat preservation of pottery, be provided with the silicon molybdenum heating rod on the wall of both sides in the ceramic fibre furnace, silicon molybdenum heating rod below is provided with the thermocouple, thermocouple one side is provided with bears the weight of the seat, it is provided with steam outlet to bear the weight of the seat top, the welding of base upper end has the coating film jar, it has the exhaust tube to peg graft on the coating film jar lateral wall. Has the advantages that: the utility model discloses a set up cotton heat preservation of pottery and ceramic fiber furnace, thermal conductivity is low, has splendid heat preservation and heat-proof quality to make the device energy-concerving and environment-protective more, and the heat preservation time is more than ten times of ordinary furnace, does not have the possibility of bore or fracture, and is more durable.

Description

Vacuum coating device for bearing

Technical Field

The utility model relates to a vacuum coating technical field, concretely relates to vacuum coating device for bearing.

Background

Vacuum coating is a method for forming a thin film by heating a metal or non-metal material under a high vacuum condition to evaporate and condense the metal or non-metal material on the surface of a plated part (metal, semiconductor or insulator), and is an important aspect of the vacuum application field.

The heating furnace of the existing vacuum coating device for the bearings uses a common furnace, the heat preservation effect is poor, the heat loss is large, the device is not energy-saving and environment-friendly enough, the phenomena of explosion and cracking can occur after long-term use, the existing vacuum coating device for the bearings is difficult to coat a large number of bearings at one time, and the coating efficiency is low.

Disclosure of Invention

Technical problem to be solved

In order to overcome the defects of the prior art, the vacuum coating device for the bearing is provided, and the problems that a heating furnace of the conventional vacuum coating device for the bearing uses a common hearth, has poor heat preservation effect and large heat loss, is not energy-saving and environment-friendly enough, can generate the phenomena of explosion and cracking after being used for a long time, is difficult to coat a large number of bearings once and has low coating efficiency are solved.

(II) technical scheme

The utility model discloses a following technical scheme realizes: the utility model provides a vacuum coating device for bearing, which comprises a base, a coating tank and a driven wheel, wherein a ceramic cotton heat preservation layer is arranged in the base, a ceramic fiber hearth is arranged in the ceramic cotton heat preservation layer, silicon molybdenum heating rods are arranged on two side walls in the ceramic fiber hearth, a thermocouple is arranged below the silicon molybdenum heating rods, a bearing seat is arranged on one side of the thermocouple, a steam outlet is arranged above the bearing seat, the upper end of the base is welded with the coating tank, an exhaust tube is spliced on one side wall of the coating tank, a pressure gauge is arranged on the exhaust tube, a vacuum pump is arranged at one end of the exhaust tube, a solenoid valve is arranged on one side of the vacuum pump, a rotating shaft is arranged in the coating tank, a fixing piece is arranged on the rotating shaft, a bearing rod is arranged on one side wall of the fixing piece, pivot one end is provided with from the driving wheel, from driving wheel one side being provided with connecting bearing, be provided with the action wheel from the driving wheel below, the nested belt that has on the action wheel, action wheel one side is provided with step motor.

Further, the cotton heat preservation of pottery with ceramic fiber furnace bonds, the silicon molybdenum heating rod with ceramic fiber furnace passes through bolted connection, the thermocouple with bear the seat all with ceramic fiber furnace passes through bolted connection.

By adopting the technical scheme, compared with a common hearth, the ceramic fiber hearth has low thermal conductivity and thermal conductivity, excellent heat preservation and heat insulation performance, the heat preservation time is more than ten times that of the common hearth, no possibility of explosion or cracking exists, and the high temperature resistance is good, the ceramic cotton heat preservation layer also has high temperature resistance, so that the heat preservation performance of the ceramic fiber hearth can be further improved, the heat loss of the device is greatly reduced, the device is more energy-saving, the thermocouple is a temperature measuring element and is connected with an external control system, the thermocouple directly measures the temperature, converts the temperature signal into a thermal electromotive force signal, and converts the thermal electromotive force signal into the temperature of a measured medium through an electric instrument (a secondary instrument).

Furthermore, the steam outlet is formed in the base, the exhaust pipe is connected with the vacuum pump in an inserting mode, and the pressure gauge and the electromagnetic valve are connected with the exhaust pipe through threads.

By adopting the technical scheme, after the electromagnetic valve is opened through the external control assembly, the vacuum pump works, the vacuum pump can pump the coating tank into a vacuum state through the exhaust pipe during working, the vacuum degree in the coating tank can be observed through the pressure gauge, the maximum working temperature of the silicon-molybdenum heating rod can reach more than 1800 ℃, the target on the bearing seat can be heated during working until components on the surface of the target are evaporated in a radical or ion form, and then target steam can enter the coating tank through the steam outlet.

Further, the rotating shaft is rotatably connected with the coating tank, and the bearing rod and the rotating shaft are welded with the fixing piece.

By adopting the technical scheme, the number of the bearing rods is four, and a large number of bearings can be placed on the bearing rods.

Furthermore, the separation blade with the carrier bar passes through threaded connection, the connection bearing with the pivot and the coating film jar is interference connection.

By adopting the technical scheme, the blocking piece can prevent the bearing to be coated from falling off from the bearing rod, and the connecting bearing can assist the rotating shaft to rotate.

Further, the driven wheel is connected with the rotating shaft key, and the belt is nested on the driven wheel.

By adopting the technical scheme, the rotating shaft can synchronously rotate with the driven wheel.

Furthermore, the driving wheel is connected with the transmission output end key of the stepping motor.

By adopting the technical scheme, the stepping motor can drive the driving wheel to rotate when in work, and the driving wheel can drive the driven wheel to rotate through the belt when rotating.

(III) advantageous effects

Compared with the prior art, the utility model, following beneficial effect has:

1. in order to solve the problems that the heating furnace of the existing vacuum coating device for the bearing uses a common furnace, has poor heat preservation effect and large heat loss, so that the device is not energy-saving and environment-friendly enough, and has the phenomena of explosion and cracking after long-term use, the utility model discloses a ceramic cotton heat preservation layer and a ceramic fiber furnace are arranged, so that the thermal conductivity is low, and the ceramic fiber furnace has excellent heat preservation and heat insulation performance, thereby the device is more energy-saving and environment-friendly, the heat preservation time is more than ten times of that of the common furnace, and the possibility of explosion or cracking is avoided, so that the device is;

2. for solving current vacuum coating device for bearing once be difficult to carry out the coating film to a large amount of bearings, the problem of coating film inefficiency, the utility model discloses a set up pivot, stationary blade, carrier bar, separation blade, bearing, from driving wheel, belt, action wheel and step motor, make the device accessible carrier bar carry a large amount of bearings and carry out the coating film under guaranteeing to the even prerequisite of bearing coating film, make the coating film efficiency of device promote greatly.

Drawings

FIG. 1 is a schematic structural view of a vacuum coating apparatus for a bearing according to the present invention;

FIG. 2 is a cross-sectional view of a base and a coating tank of a vacuum coating apparatus for a bearing according to the present invention;

FIG. 3 is a schematic view showing the connection relationship between the rotating shaft, the fixing plate, the carrying rod and the retaining plate of the vacuum coating apparatus for bearings of the present invention.

The reference numerals are explained below:

1. a base; 2. a ceramic wool heat-insulating layer; 3. a ceramic fiber hearth; 4. a silicon-molybdenum heating rod; 5. a galvanic couple; 6. a bearing seat; 7. a steam outlet; 8. a film coating tank; 9. an air exhaust pipe; 10. a pressure gauge; 11. a vacuum pump; 12. an electromagnetic valve; 13. a rotating shaft; 14. a fixing sheet; 15. a carrier bar; 16. a baffle plate; 17. a driven wheel; 18. connecting a bearing; 19. a driving wheel; 20. a belt; 21. a stepper motor.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in figures 1-3, a vacuum coating device for a bearing comprises a base 1, a coating tank 8 and a driven wheel 17, wherein a ceramic wool insulating layer 2 is arranged in the base 1, a ceramic fiber hearth 3 is arranged in the ceramic wool insulating layer 2, silicon-molybdenum heating rods 4 are arranged on two inner side walls of the ceramic fiber hearth 3, a thermocouple 5 is arranged below the silicon-molybdenum heating rods 4, a bearing seat 6 is arranged on one side of the thermocouple 5, a steam outlet 7 is arranged above the bearing seat 6, the coating tank 8 is welded on the upper end of the base 1, an exhaust tube 9 is inserted on one side wall of the coating tank 8, a pressure gauge 10 is arranged on the exhaust tube 9, a vacuum pump 11 is arranged at one end of the exhaust tube 9, an electromagnetic valve 12 is arranged on one side of the vacuum pump 11, a rotating shaft 13 is arranged in the coating tank 8, a fixing plate 14 is arranged on the rotating shaft, one end of the rotating shaft 13 is provided with a driven wheel 17, one side of the driven wheel 17 is provided with a connecting bearing 18, a driving wheel 19 is arranged below the driven wheel 17, a belt 20 is nested on the driving wheel 19, and one side of the driving wheel 19 is provided with a stepping motor 21.

As shown in figure 2, the ceramic cotton heat-insulating layer 2 is glued with the ceramic fiber hearth 3, the silicon-molybdenum heating rod 4 is connected with the ceramic fiber hearth 3 through bolts, the thermocouple 5 and the bearing seat 6 are connected with the ceramic fiber hearth 3 through bolts, the ceramic fiber hearth 3 has low heat conductivity and low heat conductivity compared with the common hearth, has excellent heat-insulating property, has more than ten times of heat-insulating time of the common hearth, and has no possibility of chamber explosion or cracking, and has good high temperature resistance, the ceramic cotton heat-insulating layer 2 also has high temperature resistance, the heat-insulating property of the ceramic fiber hearth 3 can be further improved, thereby greatly reducing the heat loss of the device and leading the device to be more energy-saving, the thermocouple 5 is a temperature measuring element, and the temperature sensor is connected with an external control system, directly measures the temperature, converts the temperature signal into a thermal electromotive force signal, and converts the thermal electromotive force signal into the temperature of the measured medium through an electric instrument (a secondary instrument).

As shown in fig. 1-2, the steam outlet 7 is formed on the base 1, the air exhaust tube 9 is inserted with the vacuum pump 11, the pressure gauge 10 and the electromagnetic valve 12 are connected with the air exhaust tube 9 through screw threads, after the electromagnetic valve 12 is opened through the external control component, the vacuum pump 11 is enabled to work, the vacuum pump 11 can pump the interior of the coating tank 8 into a vacuum state through the exhaust tube 9 when working, the vacuum degree in the coating tank 8 can be observed through the pressure gauge 10, when the coating tank 8 reaches the proper vacuum degree, the vacuum pump 11 is closed through the external control component, the electromagnetic valve 12 is closed, the maximum working temperature of the silicon-molybdenum heating rod 4 can reach more than 1800 ℃, during operation, the target on the bearing seat 6 can be heated until the surface components of the target are evaporated in the form of atomic groups or ions, and then the target steam enters the coating tank 8 through the steam outlet 7.

As shown in fig. 1-3, the rotating shaft 13 is rotatably connected to the coating tank 8, the bearing rods 15 and the rotating shaft 13 are welded to the fixing pieces 14, the number of the bearing rods 15 is four, and a large number of bearings can be placed on the bearing rods 15.

As shown in fig. 2-3, the blocking piece 16 is connected with the bearing rod 15 through a screw thread, the connecting bearing 18 is connected with the rotating shaft 13 and the coating tank 8 in an interference manner, the blocking piece 16 can prevent the bearing to be coated from falling off from the bearing rod 15, and the connecting bearing 18 can assist the rotating shaft 13 to rotate.

As shown in fig. 1, the driven pulley 17 is keyed to the shaft 13, and the belt 20 is nested on the driven pulley 17.

As shown in fig. 1, the driving wheel 19 is connected with the transmission output end key of the stepping motor 21, the stepping motor 21 can drive the driving wheel 19 to rotate when working, and the driving wheel 19 can drive the driven wheel 17 and the rotating shaft 13 to rotate through the belt 20 when rotating, so that the fixing piece 14 and the bearing rod 15 can drive the bearing to be coated to rotate, and the coating of the bearing is more uniform.

The utility model provides a vacuum coating device's for bearing theory of operation: the device uses an external power supply and is controlled by an external control component, after a cover at the upper end of a coating tank 8 is opened, a baffle 16 is screwed down, then a bearing to be coated is placed on a bearing rod 15, then the baffle 16 is arranged on the bearing rod 15, the number of the bearing rods 15 is four, a large number of bearings can be placed on the bearing rod 15, the baffle 16 can prevent the bearing to be coated from falling off from the bearing rod 15, a vacuum pump 11 can pump the interior of the coating tank 8 into a vacuum state through an exhaust tube 9 during operation, the vacuum degree in the coating tank 8 can be observed through a pressure gauge 10, when the interior of the coating tank 8 reaches a proper vacuum degree, the vacuum pump 11 is closed through the external control component, an electromagnetic valve 12 is closed, the maximum working temperature of a silicon-molybdenum heating rod 4 can reach more than 1800 ℃, the target on a bearing seat 6 can be heated during operation until the surface components of the target are evaporated out in the form of radicals or ions, then the target material steam enters the film coating tank 8 through the steam outlet 7 and settles on the surface of the bearing, a film is formed through the scattered point-island structure-labyrinth structure-layered growth in the film forming process, the stepping motor 21 can drive the driving wheel 19 to rotate when in work, the driving wheel 19 can drive the driven wheel 17 and the rotating shaft 13 to rotate through the belt 20 when in rotation, so that the fixing piece 14 and the bearing rod 15 can drive the bearing to be coated to rotate, the coated film of the bearing is more uniform, the ceramic fiber hearth 3 has low heat conductivity and excellent heat preservation and insulation performance compared with the common hearth, the heat preservation time is more than ten times of the common hearth, the possibility of explosion or cracking is avoided, the high temperature resistance is good, the ceramic cotton heat preservation layer 2 also has the high temperature resistance, the heat preservation performance of the ceramic fiber hearth 3 can be further improved, and the heat loss of the device is greatly reduced, the device is more energy-saving, the thermocouple 5 is a temperature measuring element, is connected with an external control system, directly measures the temperature, converts a temperature signal into a thermal electromotive force signal, and converts the thermal electromotive force signal into the temperature of a measured medium through an electric instrument (a secondary instrument).

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and are not intended to limit the spirit and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by the technical solution of the present invention by those skilled in the art should fall into the protection scope of the present invention, and the technical contents claimed by the present invention have been fully recorded in the claims.

Claims

1. A vacuum coating device for a bearing is characterized in that: comprises a base (1), a coating tank (8) and a driven wheel (17), wherein a ceramic cotton heat-insulating layer (2) is arranged in the base (1), a ceramic fiber hearth (3) is arranged in the ceramic cotton heat-insulating layer (2), silicon-molybdenum heating rods (4) are arranged on two inner side walls of the ceramic fiber hearth (3), a thermocouple (5) is arranged below the silicon-molybdenum heating rods (4), a bearing seat (6) is arranged on one side of the thermocouple (5), a steam outlet (7) is arranged above the bearing seat (6), the coating tank (8) is welded on the upper end of the base (1), an exhaust pipe (9) is inserted into one side wall of the coating tank (8), a pressure gauge (10) is arranged on the exhaust pipe (9), a vacuum pump (11) is arranged at one end of the exhaust pipe (9), and an electromagnetic valve (12) is arranged on one side of the vacuum pump, be provided with pivot (13) in coating film jar (8), be provided with stationary blade (14) on pivot (13), be provided with carrier bar (15) on stationary blade (14) a lateral wall, carrier bar (15) one end is provided with separation blade (16), pivot (13) one end is provided with from driving wheel (17), be provided with from driving wheel (17) one side and connect bearing (18), be provided with action wheel (19) from driving wheel (17) below, nested belt (20) have on action wheel (19), action wheel (19) one side is provided with step motor (21).

2. The vacuum coating apparatus for a bearing according to claim 1, wherein: ceramic wool heat preservation (2) with ceramic fiber furnace (3) splice, silicon molybdenum heating rod (4) with ceramic fiber furnace (3) pass through bolted connection, thermocouple (5) and bear seat (6) all with ceramic fiber furnace (3) pass through bolted connection.

3. The vacuum coating apparatus for a bearing according to claim 1, wherein: the steam outlet (7) is formed in the base (1), the air exhaust pipe (9) is connected with the vacuum pump (11) in an inserting mode, and the pressure gauge (10) and the electromagnetic valve (12) are connected with the air exhaust pipe (9) through threads.

4. The vacuum coating apparatus for a bearing according to claim 1, wherein: the rotating shaft (13) is rotatably connected with the film coating tank (8), and the bearing rod (15) and the rotating shaft (13) are welded with the fixing piece (14).

5. The vacuum coating apparatus for a bearing according to claim 1, wherein: the baffle plate (16) is in threaded connection with the bearing rod (15), and the connecting bearing (18) is in interference connection with the rotating shaft (13) and the coating tank (8).

6. The vacuum coating apparatus for a bearing according to claim 1, wherein: the driven wheel (17) is in key connection with the rotating shaft (13), and the belt (20) is nested on the driven wheel (17).

7. The vacuum coating apparatus for a bearing according to claim 1, wherein: the driving wheel (19) is connected with the transmission output end key of the stepping motor (21).