Bearing roller double-end-face sand blasting machine

Abstract

The bearing roller double-end-face sand blasting machine comprises a sand blasting chamber and a nozzle, a material channel allowing a roller to pass through in a rolling mode is arranged in the sand blasting chamber, the material channel gradually inclines downwards from the feeding end of the sand blasting chamber to the discharging end of the sand blasting chamber, side plates are fixedly connected to the two sides of the material channel, and the upper ends of the side plates are both lower than the circle center of the roller to be subjected to sand blasting machining; the multiple nozzles are arranged on the outer sides of the side plates and distributed in the length direction of the material channel. During sand blasting, a worker places a roller to be machined at the top end of the material channel, the roller rolls downwards along the material channel under the action of the gravity of the roller and the guiding action of the side plates, and in the rolling process, the nozzles distributed in the length direction of the material channel conduct sand blasting treatment on the parts, higher than the side plates, of the two end faces of the roller at the same time. The two end faces of the roller can be subjected to sand blasting treatment at the same time. The sand blasting device has the effect of improving the sand blasting efficiency of the bearing roller.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of bearing roller production technology equipment, and particularly relates to a bearing roller double-end surface sand blasting machine. BACKGROUND

[0002] The roller is an important component of the roller bearing, and the processing quality of the roller affects the quality of the roller bearing. The traditional processing method of the roller mainly includes the following steps: blank forming, deburring or ring banding, soft grinding of the rolling surface, soft grinding of the double-end surface, heat treatment, front rough grinding of the rolling surface, rough grinding of the double-end surface, rear rough grinding of the rolling surface, final grinding of the double-end surface, final grinding of the rolling surface, superfinishing of the rolling surface, surface treatment, cleaning, drying, final inspection of the appearance, size grouping, oiling and packaging and the like. The surface treatment process usually includes sand blasting, phosphating / oxidation treatment and the like, and the sand blasting is mainly for creating surface texture on the two end surfaces of the roller to improve the friction performance of the interface between the end surface and the bearing retainer.

[0003] In the prior art, the equipment specially used for sand blasting of the end surface of the bearing roller usually includes a sand blasting chamber, an abrasive circulating system, a roller conveying system, a dust removal system and a control system. The common roller conveying system currently is a tray with precise positioning holes. The tray is placed on a movable workbench. The workbench step by step carries the tray into a designated work station of the sand blasting chamber according to the set rhythm, and then the upper nozzle array is aligned with the exposed upper end surface of the roller to perform sand blasting. After the treatment is completed, the lower end surface needs to be treated by another work station or the lower end surface is treated after the roller is turned over at the current work station.

[0004] The above-mentioned method of positioning the roller by the tray needs special trays of different specifications and models for different types of rollers, and the rollers need to be loaded into the positioning holes one by one, and the two end surfaces of the roller need to be turned over for separate sand blasting, and the production efficiency needs to be improved. SUMMARY

[0005] In order to improve the sand blasting efficiency of the bearing roller, the present application provides a bearing roller double-end surface sand blasting machine.

[0006] The present application provides a bearing roller double-end surface sand blasting machine, which adopts the following technical scheme: A bearing roller double-end surface sand blasting machine, comprising a sand blasting chamber and a plurality of nozzles used for sand blasting operation, a material channel for rolling of the roller is arranged in the sand blasting chamber, the material channel extends from the feeding end of the sand blasting chamber to the discharging end of the sand blasting chamber, and the material channel gradually inclines downward from the feeding end of the sand blasting chamber to the discharging end of the sand blasting chamber. Side plates for preventing the roller from falling out of the material channel are fixedly connected to the two sides of the material channel, and the upper end of each side plate is lower than the center of the roller to be sand blasted. The plurality of nozzles are arranged outside the side plates and are arranged along the length direction of the material channel.

[0007] By adopting the technical scheme, the roller to be processed is placed at the top end of the material channel, and the roller rolls downward along the material channel under the action of its own gravity and the guiding action of the side plates, the nozzles arranged along the length direction of the material channel simultaneously perform sand blasting on the parts of the two end faces of the roller that are higher than the side plates, and as the rolling process proceeds, each part of the end face of the roller is subjected to sand blasting, and the roller after sand blasting is taken out from the bottom end of the material channel, so that sand blasting can be simultaneously performed on the two end faces of the roller, which helps to improve the sand blasting efficiency of the bearing roller.

[0008] Optionally, the material channel comprises two support vertical plates arranged in parallel, and at least two groups of adjusting cylinders are arranged between the two support vertical plates, the cylinder body of the adjusting cylinder is fixedly connected with one support vertical plate, and the telescopic shaft of the adjusting cylinder is fixedly connected with the other support vertical plate.

[0009] By adopting the technical scheme, the material channel is composed of two support vertical plates arranged in parallel, the two support vertical plates are connected through the adjusting cylinders, and a large area of gap is formed between the support vertical plates and the adjusting cylinders, so that sand can pass through the material channel and be discharged through the sand discharge port of the sand blasting chamber in time during sand blasting, and sand accumulation can be avoided to prevent the roller from being stuck. Meanwhile, the distance between the two support vertical plates can be adjusted through the adjusting cylinders, and the width of the material channel can be adjusted, so that the roller of different models can be adapted.

[0010] Optionally, the device further comprises an outlet base and an inlet base, the outlet base is arranged at the outlet end of the sand blasting chamber, the outlet end of the material channel is hingedly connected with the outlet base, the inlet base is arranged at the inlet end of the sand blasting chamber, and a lifting plate is slidably connected with the inlet base, and the sliding direction of the lifting plate is the vertical direction, and the inlet end of the material channel is hingedly connected with the lifting plate.

[0011] By adopting the technical scheme, the two ends of the material channel are hingedly connected with the outlet base and the lifting plate respectively, the outlet base is arranged at the outlet end of the sand blasting chamber and is placed on the ground, so that the height of the outlet end of the material channel is fixed, the inlet base is arranged at the inlet end of the sand blasting chamber, and the lifting plate is vertically and slidably connected with the inlet base, so that the height of the inlet end of the material channel can be changed by sliding the lifting plate, the inclination angle of the material channel can be adjusted, and the rolling speed of the roller can be adjusted and controlled.

[0012] Optionally, the inlet base is rotatably connected with a vertically arranged lead screw, the lead screw is threadedly connected with the lifting plate, and the inlet base is fixedly connected with a motor for driving the lead screw to rotate.

[0013] By adopting the technical scheme, the lead screw is fixedly connected with the output shaft of the motor, the motor can drive and control the rotation of the lead screw, and the lifting plate can be lifted and lowered by the rotating lead screw to adjust the inclination angle of the material channel. Meanwhile, the height of the lifting plate can be locked after the lead screw stops rotating, and the inclination angle of the material channel is locked, so that the sand blasting work can be stably performed.

[0014] Optionally, the discharging base is fixedly connected with a discharging cylinder, an extension shaft of the discharging cylinder is vertically arranged, and the extension shaft of the discharging cylinder is fixedly connected with a discharging frame for receiving the discharging end roller.

[0015] By adopting the above technical scheme, the discharging frame is arranged and controlled by the discharging cylinder, and when the sand blasting of the roller is completed, the roller is rolled out from the bottom end of the material channel, the extension shaft of the discharging cylinder is extended, and the discharging frame drives the roller after sand blasting to be pushed out upward, so as to cooperate with the mechanical hand or the worker to complete the discharging.

[0016] Optionally, a chain plate conveyor is arranged in the sand blasting chamber, each chain plate of the chain plate conveyor is vertically provided with a material blocking plate at both ends, and adjacent two material blocking plates of the horizontal part of the chain plate conveyor form a gap matched with the shape of the side surface of the roller.

[0017] By adopting the above technical scheme, during the sand blasting process, part of the sand will be sprayed to the outer cylindrical surface of the roller through the gap between adjacent rollers, thereby damaging the outer cylindrical surface of the roller which has been super-finished. In the present application, the material blocking plate is arranged and moves with the chain plate of the chain plate conveyor, and a gap matched with the shape of the side surface of the roller is formed between adjacent material blocking plates. During the sand blasting process, the roller is arranged in the gap between adjacent material blocking plates, and the sand is isolated from the outer cylindrical surface of the roller during the sand blasting process, which helps to protect the outer cylindrical surface of the roller during the sand blasting process.

[0018] Optionally, hanger frames are hingedly connected to both ends of the chain plate conveyor in the length direction, a lifting rod is fixedly connected to the top end of the hanger frame, and one end of the lifting rod away from the hanger frame is connected to the top of the sand blasting chamber by bolts.

[0019] By adopting the above technical scheme, the chain plate conveyor is installed in the sand blasting chamber through the hanger frame and the lifting rod, and after the inclination angle of the material channel changes, the inclination angle of the chain plate conveyor can be adjusted to the same state as the inclination angle of the material channel, so that the parallel state of the material channel and the chain plate conveyor is maintained.

[0020] Optionally, the material blocking plate is slidingly connected to the chain plate of the chain plate conveyor, and the sliding direction is perpendicular to the conveying direction of the chain plate conveyor.

[0021] By adopting the above technical scheme, the material blocking plate is slidingly connected to the chain plate of the chain plate conveyor, and the distance between the two material blocking plates on the same chain plate can be adjusted by sliding the material blocking plate, thereby adapting to rollers of different lengths and expanding the application range.

[0022] In summary, the present application has at least one of the following beneficial technical effects: During sand blasting, the worker places the roller to be processed horizontally at the top end of the material channel, the roller rolls downward under the action of its own gravity, and the roller is limited within the range of the material channel through the guiding action of the side plate. During the rolling process, the parts of the two end faces of the roller that are higher than the side plate are exposed to the action range of the nozzle, so that the two end faces of the roller can be sand blasted at the same time, which helps to improve the sand blasting efficiency of the bearing roller; The material channel is composed of two parallel support vertical plates, the two support vertical plates are connected through the adjusting cylinder, the material channel is in a configuration formed by multiple rod splicing, a large gap is formed between the support vertical plate and the adjusting cylinder, during sand blasting, the sand can pass through the material channel in time and be discharged through the sand discharge port of the sand blasting chamber, thereby avoiding sand accumulation and preventing the roller from being stuck, and the adjusting cylinder can adjust the distance between the two support vertical plates, thereby adjusting the width of the material channel, so as to adapt to different types of rollers; The two ends of the material channel are respectively hinged with the discharge base and the feeding base, the discharge base is placed on the ground at the discharge end of the sand blasting chamber to fix the height of the discharge end of the material channel, the lifting plate is vertically and slidingly connected to the feeding base, and the height of the feeding end of the material channel can be changed by sliding the lifting plate to adjust the inclination angle of the material channel, thereby realizing the regulation and control of the rolling speed of the roller. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a whole structure schematic diagram of the embodiment one of the present application.

[0024] Figure 2 is a structure schematic diagram for showing the discharge cylinder in the embodiment one of the present application.

[0025] Figure 3 is a structure schematic diagram for showing the material channel in the embodiment one of the present application.

[0026] Figure 4 is an internal structure schematic diagram for showing the nozzle in the embodiment one of the present application.

[0027] Figure 5 is a whole structure schematic diagram of the embodiment two of the present application.

[0028] Figure 6 is an internal structure schematic diagram of the embodiment two of the present application.

[0029] Figure 7 is an explosion schematic diagram for showing the fixed plate in the embodiment two of the present application.

[0030] Explanation of reference signs: 1, sand blasting chamber; 11, feeding port; 12, discharging port; 13, sand discharging port; 14, observation window; 15, mounting hole; 2, nozzle; 3, material channel; 31, side plate; 32, supporting vertical plate; 33, adjusting cylinder; 4, discharging base; 41, discharging cylinder; 411, discharging frame; 5, feeding base; 51, lifting plate; 6, lead screw; 7, motor; 8, chain plate conveyor; 81, material blocking plate; 82, hoisting frame; 83, sliding groove; 84, fixing plate; 85, lifting rod; 86, sliding block. DETAILED DESCRIPTION

[0031] The application will be further described in detail below with reference to all the drawings.

[0032] Example 1 The embodiment of the application discloses a bearing roller double-end-face sand blasting machine.

[0033] Reference Figure 1 and Figure 2 A bearing roller double-end-face sand blasting machine, comprising a sand blasting chamber 1, the sand blasting chamber 1 is a closed cavity structure, feeding ports 11 and discharging ports 12 are respectively arranged on the two sides of the sand blasting chamber 1, the feeding ports 11 are used for the rollers to enter the sand blasting chamber 1, and the discharging ports 12 are used for the rollers after sand blasting to be discharged from the sand blasting chamber 1. An observation window 14 is arranged on the top of the sand blasting chamber 1 in a slanting manner, so that workers can observe during the sand blasting process, the bottom wall of the sand blasting chamber 1 is in a funnel shape and is provided with a sand discharging port 13, which is used for recycling sand after the sand blasting and falling on the bottom. A material channel 3 is horizontally arranged in the sand blasting chamber 1 and is used for the rollers to roll through during the sand blasting process, the material channel 3 extends from one end of the feeding port 11 to one end of the discharging port 12 of the sand blasting chamber 1, and the two ends of the material channel 3 extend out of the sand blasting chamber 1 from the feeding port 11 and the discharging port 12 respectively. The ground height of one end of the material channel 3 at the feeding port 11 is greater than the ground height of one end of the material channel 3 at the discharging port 12, and the material channel 3 gradually inclines downward from the feeding end to the discharging end. Side plates 31 are fixedly connected to the two sides of the material channel 3, the side plates 31 are vertically arranged and are used for preventing the rollers from falling out of the material channel 3, and the upper ends of the side plates 31 are all lower than the centers of the rollers to be sand blasted. A plurality of nozzles 2 are arranged on the two sides of the material channel 3 respectively, the nozzles 2 on each side are arranged along the length direction of the material channel 3 and are connected to the side plates 31 through connecting supports, and the sand blasting ports of the nozzles 2 are aligned with the end faces of the rollers when the rollers roll and convey on the material channel 3. After the rollers to be processed enter the sand blasting chamber 1 through the feeding port 11 and are placed on the top end of the material channel 3, the rollers roll under the action of their own gravity and roll along the length direction of the material channel 3 under the guidance of the side plates 31, the two end faces of the rollers which are higher than the side plates 31 are simultaneously subjected to sand blasting treatment during the rolling process, and the rollers after sand blasting are taken out from the bottom end of the material channel 3, which helps to improve the sand blasting efficiency of the bearing rollers.

[0034] Reference Figure 2 and Figure 3The material channel 3 comprises two support vertical plates 32 arranged in parallel, and at least two groups of adjusting cylinders 33 are arranged between the two support vertical plates 32. In the embodiment of the application, five groups of adjusting cylinders 33 are arranged, which are uniformly distributed along the length direction of the material channel 3. The cylinder body of the adjusting cylinder 33 is fixedly connected with one support vertical plate 32, and the telescopic shaft of the adjusting cylinder 33 is fixedly connected with the other support vertical plate 32. The support vertical plate 32 and the adjusting cylinder 33 form multiple large-area gaps, which facilitate the sand to pass through the material channel 3 and be discharged through the sand outlet 13 at the bottom of the sand blasting chamber 1 in time during the sand blasting process, avoid sand accumulation, and prevent the situation of roller jamming. By changing the telescopic amount of the telescopic shaft of the cylinder 33, the spacing between the two support vertical plates 32 can be adjusted, and then the width of the material channel 3 is linearly adjusted, which is convenient for adapting to different models of rollers and widening the application range of the sand blasting machine.

[0035] With reference to Figure 2 and Figure 4 , the position opposite to the discharge port 12 of the sand blasting chamber 1 is provided with a discharge base 4, the discharge base 4 is placed on the ground, the discharge end of the material channel 3 is hingedly connected with the discharge base 4, and then the height of the discharge end of the material channel 3 is fixed. The feeding port 11 position of the sand blasting chamber 1 is provided with a feeding base 5, the feeding base is placed on the ground and the feeding base 5 is slidingly connected with a lifting plate 51, the sliding direction of the lifting plate 51 is the vertical direction, the feeding end of the material channel 3 is hingedly connected with the lifting plate 51, the height of the feeding end of the material channel 3 can be changed by sliding the lifting plate 51, and then the inclination angle of the material channel 3 is adjusted to realize the regulation and control of the rolling speed of the roller.

[0036] With reference to Figure 1 and Figure 4 , the feeding base 5 is provided with a lead screw 6, the lead screw 6 is vertically arranged and rotationally connected with the feeding base 5, the lead screw 6 is threadedly connected with the lifting plate 51, the feeding base 5 is fixedly connected with a motor 7, the output shaft of the motor 7 is coaxially fixedly connected with the lead screw 6, the motor 7 can drive and control the rotation of the lead screw 6, the rotation of the lead screw 6 can realize the lifting of the lifting plate 51, and the height of the lifting plate 51 can be locked after the lead screw 6 stops rotating, and then the inclination angle of the material channel 3 is locked, which ensures the stability of the inclination angle of the material channel 3 during the sand blasting process, and helps the stable operation of the sand blasting work.

[0037] With reference to Figure 2 and Figure 4, the discharge base 4 is provided with a discharge cylinder 41, the cylinder body of the discharge cylinder 41 is fixedly connected to the discharge base 4, the telescopic shaft of the discharge cylinder 41 is vertically even and penetrates through the discharge base 4, the telescopic shaft of the discharge cylinder 41 is fixedly connected with a discharge frame 411, the shape of the discharge frame 411 is mutually matched with the shape of the roller, and the discharge frame 411 is used for supporting the roller at the discharge end. When the roller is finished sand blasting and rolls out from the bottom end of the material channel 3, the telescopic shaft of the discharge cylinder 41 is extended, the discharge frame 411 is driven to push the roller finished sand blasting upwards, so that the roller is prevented from continuing to roll to the ground, and the discharge is facilitated in cooperation with the mechanical hand or the worker.

[0038] The implementation principle of the bearing roller double-end-face sand blasting machine in the embodiment of the application is as follows: taking the closed sand blasting chamber 1 as the basis, the funnel-shaped bottom wall cooperates with the sand outlet 13 to realize sand recovery, the top observation window 14 facilitates real-time monitoring of the processing state, the internal inclined material channel 3 cooperates with the two side plates 31 to form a roller conveying channel, the roller rolls along the material channel 3 by virtue of its own gravity, the nozzles 2 on the side plates 31 synchronously sand blast the two end faces of the roller, and the sand blasting efficiency of the end face of the roller is improved. The material channel 3 is composed of two groups of support vertical plates 32, the spacing between the two groups of support vertical plates 32 can be adjusted through the adjusting cylinder 33, different models of rollers are adapted, and the gap between the support vertical plates 32 facilitates sand recovery and avoids sand accumulation and blockage. The lifting plate 51 at the feeding end cooperates with the lead screw 6 and the motor 7, the inclination angle of the material channel 3 can be adjusted, and then the rolling speed of the roller is adjusted and controlled; the roller finished sand blasting is supported and pushed out by the discharge frame 411 driven by the discharge cylinder 41 at the discharge end, and the discharge is facilitated. This is helpful to improve the sand blasting efficiency of the bearing roller.

[0039] Embodiment two: With reference to Figure 5 and Figure 6 The difference between embodiment two and embodiment one is that a roller outer circular face protection structure is added. In the sand blasting process, part of the sand may be sprayed to the outer circular face of the roller through the gap between adjacent rollers, thereby causing damage to the outer circular face of the roller which has been finished superfinishing. In the embodiment of the application, the chain plate conveyor 8 is installed in the sand blasting chamber 1, and during operation, the chain plate conveyor 8 maintains a posture parallel to the material channel 3, each chain plate of the chain plate conveyor 8 is vertically provided with a material blocking plate 81 at both ends, and adjacent two material blocking plates 81 in the conveying direction form a gap matched with the shape of the side face of the roller. In the sand blasting process, the material blocking plates 81 move synchronously with the chain plates of the chain plate conveyor 8, the roller is placed in the gap between adjacent two material blocking plates 81 in the conveying direction, only the end face is exposed to the action range of the nozzle 2, the sand can be isolated from the outer circular face of the roller in the sand blasting process, and the outer circular face of the roller is protected in the sand blasting process.

[0040] With reference to Figure 5 and Figure 6The two ends of the length direction of the chain plate conveyor 8 are hinged with lifting frames 82, the hinging axes are perpendicular to the conveying direction, the top ends of the lifting frames 82 are fixedly connected with lifting rods 85, the top end of the sand blasting chamber 1 is provided with a strip-shaped mounting hole 15, the width of the mounting hole 15 is matched with the outer diameter of the lifting rod 85, the mounting hole 15 is provided along the length direction of the chain plate conveyor 8, the end of the lifting rod 85 away from the lifting frame 82 is inserted into the mounting hole 15, the lifting rod 85 is threadedly connected with a bolt, the bolt is located outside the sand blasting chamber 1 and the outer diameter of the bolt is greater than the width of the mounting hole 15, and the chain plate conveyor 8 is lifted on the top of the sand blasting chamber 1 by gravity. After the inclination angle of the material channel 3 is changed, the inclination angle of the chain plate conveyor 8 can be adjusted to be the same as that of the material channel 3 by adjusting the length of the lifting rod 85 in the sand blasting chamber 1, so that the parallel state of the material channel 3 and the chain plate conveyor 8 is maintained.

[0041] Referring to Figure 6 and Figure 7 The chain plate of the chain plate conveyor 8 is provided with a sliding groove 83, the sliding groove 83 is provided along the direction perpendicular to the conveying direction of the chain plate conveyor 8, the material blocking plate 81 is fixedly connected with a sliding block 86, the length of the sliding block 86 is matched with the width of the sliding groove 83 and the sliding block 86 is embedded in the sliding groove 83, the material blocking plate 81 is slidably connected to the chain plate of the chain plate conveyor 8 through the sliding groove 83 and the sliding block 86, the sliding direction is perpendicular to the conveying direction of the chain plate conveyor 8, and the sliding block is detachably connected with a fixed plate 84 through a screw, and the length of the fixed plate 84 is greater than the width of the sliding groove 83, so that the material blocking plate 81 is fixed to the chain plate of the chain plate conveyor 8. The spacing between the two material blocking plates 81 on the same chain plate can be adjusted by sliding the material blocking plate 81, so as to adapt to rollers of different lengths and expand the application range.

[0042] The implementation principle of the bearing roller double-end surface sand blasting machine in the embodiment of the application is as follows: in view of the problem that sand is easy to be sprayed to the super-finished outer cylindrical surface of the roller through the gap between the rollers in the sand blasting operation, a protection structure is designed. The adjustable material blocking plate 81 on the chain plate of the chain plate conveyor 8 forms a positioning space, so that the roller is only exposed at the end surface for sand blasting, the outer cylindrical surface is isolated from the sand, and the super-finished surface is prevented from being damaged. The chain plate conveyor 8 can be adjusted synchronously with the inclination angle of the material channel 3 by using the hinged lifting structure, so as to ensure the stability of the conveying posture. By means of the sliding connection between the material blocking plate 81 and the chain plate of the chain plate conveyor 8, the spacing can be adjusted to adapt to rollers of different lengths. While efficiently completing the sand blasting operation, the universality and adaptability of the device are improved.

[0043] The above are the preferred embodiments of the application, which do not limit the protection scope of the application, so that: any equivalent changes made on the basis of the structure, shape and principle of the application should be covered within the protection scope of the application.

Claims

1. A bearing roller double-sided blasting machine comprising a blasting chamber (1) and a number of nozzles (2) for blasting operations, characterized in that: The sand blasting chamber (1) is provided with a material channel (3) for the roller to roll through, the material channel (3) extends from the feeding end of the sand blasting chamber (1) to the discharging end of the sand blasting chamber (1), and the material channel (3) is gradually inclined downward from the feeding end of the sand blasting chamber (1) to the discharging end of the sand blasting chamber (1), the side plates (31) are fixedly connected on both sides of the material channel (3) to prevent the roller from falling out of the material channel (3), the upper ends of the side plates (31) are lower than the center of the roller to be sand blasted, and the plurality of nozzles (2) are arranged outside the side plates (31) and along the length direction of the material channel (3).

2. A bearing roller double faced blasting machine as claimed in claim 1 wherein: The material channel (3) comprises two parallel support vertical plates (32), and at least two groups of adjusting cylinders (33) are arranged between the two support vertical plates (32), the cylinder body of the adjusting cylinder (33) is fixedly connected with one support vertical plate (32), and the telescopic shaft of the adjusting cylinder (33) is fixedly connected with the other support vertical plate (32).

3. A bearing roller double faced blasting machine as claimed in claim 1 wherein: Further comprising a discharging base (4) and a feeding base (5), the discharging base (4) is arranged at the discharging end of the sand blasting chamber (1), the discharging end of the material channel (3) is hingedly connected with the discharging base (4), the feeding base (5) is arranged at the feeding end of the sand blasting chamber (1), a lifting plate (51) is slidably connected on the feeding base (5), the sliding direction of the lifting plate (51) is the vertical direction, and the feeding end of the material channel (3) is hingedly connected with the lifting plate (51).

4. A bearing roller double faced blasting machine as claimed in claim 3 wherein: The feeding base (5) is rotationally connected with a vertically arranged lead screw (6), the lead screw (6) is threadedly connected with the lifting plate (51), and the feeding base (5) is fixedly connected with a motor (7) for driving the lead screw (6) to rotate.

5. A bearing roller double faced blasting machine as claimed in claim 3 wherein: The discharging base (4) is fixedly connected with a discharging cylinder (41), the telescopic shaft of the discharging cylinder (41) is vertically arranged, and the telescopic shaft of the discharging cylinder (41) is fixedly connected with a discharging rack (411) for receiving the roller at the discharging end.

6. A bearing roller double faced blasting machine as defined in claim 1 wherein: The sand blasting chamber (1) is provided with a chain plate conveyor (8), each chain plate of the chain plate conveyor (8) is vertically provided with a material blocking plate (81) at both ends, and adjacent two material blocking plates (81) of the horizontal part of the chain plate conveyor (8) form a gap matched with the shape of the side surface of the roller.

7. A bearing roller double faced blasting machine as claimed in claim 6 wherein: Both ends of the chain plate conveyor (8) in the length direction are hingedly connected with a lifting rack (82), the top end of the lifting rack (82) is fixedly connected with a lifting rod (85), and one end of the lifting rod (85) away from the lifting rack (82) is bolted to the top of the sand blasting chamber (1).

8. A bearing roller double faced blasting machine as defined in claim 6 wherein: The material blocking plate (81) is slidably connected on the chain plate of the chain plate conveyor (8), and the sliding direction is perpendicular to the conveying direction of the chain plate conveyor (8).

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