CN211361263U

CN211361263U - Bearing press-in mechanism

Info

Publication number: CN211361263U
Application number: CN201921861856.2U
Authority: CN
Inventors: 陆亦杰; 杨周; 高建
Original assignee: Shanghai Shuangji Intelligent Technology Co ltd
Current assignee: Shanghai Shuangji Intelligent Technology Co ltd
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-08-28
Anticipated expiration: 2029-10-31

Abstract

The utility model discloses a mechanism is gone into to bearing pressure, a serial communication port, compress tightly subassembly, two sets of barrel lifting unit, two sets of barrel ejection assembly, two sets of bearing supporting components and two sets of bearing subassemblies of impressing including frame, a barrel supporting component, a barrel. The barrel pressing component, the bearing supporting component, the barrel ejecting component and the barrel lifting component are symmetrically arranged on the table boards on two sides of the barrel supporting component; the bearing press-in component, the bearing supporting component, the barrel ejection component and the barrel lifting component which are arranged on the same side of the barrel supporting component are sequentially arranged from the outside to the center. The utility model discloses having reduced the manual work, having improved work efficiency, having reduced manufacturing cost, guaranteed the concentricity of roller, axle core, bearing and the quality of product simultaneously, improved the security of work.

Description

Bearing press-in mechanism

Technical Field

The utility model relates to a roller production technical field, concretely relates to mechanism is gone into to bearing pressure.

Background

Nowadays, the automation degree is more and more developed, the roller is visible everywhere in production manufacturing enterprises and logistics industries, the roller structure is shown in fig. 7, and the roller is composed of a barrel 81, a shaft core 82 arranged in the barrel 81 and a bearing 83 used for connecting the shaft core 82 and the barrel 81.

SUMMERY OF THE UTILITY MODEL

In view of above-mentioned technical defect, the utility model provides a mechanism is gone into to bearing pressure has solved among the prior art poor, the installation effectiveness of concentricity low and the unsafe technical problem of manual operation among roller, axle core, the bearing assembling process.

In order to achieve the above technical effect, the utility model discloses a technical scheme is:

the bearing press-in mechanism is characterized by comprising a rack, two groups of barrel lifting assemblies, two groups of bearing supporting assemblies and two groups of bearing press-in assemblies, wherein the rack is provided with a table board; the cylinder body lifting assembly is provided with a supporting plate and a lifting cylinder which is vertically upward, the cylinder body of the lifting cylinder is fixed with the table top, the supporting plate is fixedly arranged at the top of a piston rod of the lifting cylinder, and the upper end of the supporting plate is provided with a first arc-shaped surface matched with the outer wall of the cylinder body; the bearing support assembly is provided with a bearing support and a pushing cylinder horizontally and transversely installed, the cylinder body of the pushing cylinder is fixedly connected with the table top, the front end of a piston rod of the pushing cylinder is fixedly connected with the bearing support, the upper end of the inner side of the bearing support is provided with a second arc-shaped surface matched with the outer wall of the end part of the cylinder body and a third arc-shaped surface connected to the outer side of the second arc-shaped surface and matched with the outer wall of the bearing outer ring, and the height difference between the second arc-shaped surface and the third arc-shaped surface is just the thickness from the outer wall of the bearing outer ring to the; the bearing press-in component is provided with a core adjusting head, a spring, a stamping head, a fixed seat and a stamping cylinder horizontally and transversely installed, the cylinder body of the stamping cylinder is fixedly connected with the table-board, the fixed seat is fixedly installed at the front end of a piston rod of the stamping cylinder, the stamping head is fixedly installed on the front end surface of the fixed seat, the outer diameter of the stamping head is smaller than the outer diameter of a bearing outer ring and larger than the inner diameter of a bearing inner ring, the front end of the whole formed by the stamping head and the fixed seat is provided with a limit groove which is collinear with the axis of the piston rod of the stamping cylinder, the core adjusting head is thin in front and thick in back, the outer diameter of the back end is matched with the limit groove, the back end of the core adjusting head is limited in the limit groove in a sliding way through the spring, the front end of the stamping head extends out of the stamping head, the front end surface of the core adjusting head is provided with a conical guide surface, the axes of the core adjusting head, the, when the spring is in an initial state, the distance from the root of the guide surface of the core adjusting head to the front end face of the stamping head is larger than the thickness of a plurality of bearings needing to be pressed in, and when the spring is compressed to the limit position, the root of the guide surface of the core adjusting head can be retracted into the limit groove.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model is characterized in that a barrel lifting component, a bearing supporting component and a bearing pressing-in component are symmetrically arranged on a table board, a barrel with a shaft core arranged inside is erected on a first arc-shaped surface, a lifting cylinder adjusts the height of a supporting plate until the shaft core axis in the barrel is adjusted to be equal to the axis of a second arc-shaped surface, a pushing cylinder pushes a bearing bracket and a bearing on the bearing bracket to be positioned below the end part of the barrel, a piston rod of the stamping cylinder extends out, a core adjusting head on the stamping head is pushed to penetrate through a bearing inner hole and be inserted into a core fixing hole at the end part of the shaft core to axially position the shaft, the piston rod of the lifting cylinder contracts to adjust the height of the supporting plate again until the shaft axis of the barrel is collinear with the axis of the second arc-shaped surface (the shaft core is supported by the core adjusting heads at two ends, the shaft core is suspended in the barrel), the piston rod of the stamping cylinder extends out again, due to the elastic compression of a spring, the stamping, and (4) finishing roller assembly (the bearing outer ring is fixed with the inner wall of the cylinder body, and the bearing inner ring is fixed with the outer wall of the shaft core). The utility model discloses having reduced the manual work, having improved work efficiency, having reduced manufacturing cost, guaranteed the concentricity of roller, axle core, bearing and the quality of product simultaneously, improved the security of work.

The utility model discloses further improve as follows:

further, still include barrel supporting component, barrel supporting component is equipped with the barrel support, the barrel support mounting is at the mesa center, the barrel support upper end be equipped with barrel middle part outer wall assorted fourth arcwall face, the axis collineation of fourth arcwall face and second arcwall face. The cylinder supporting assembly is favorable for directly placing the cylinder and the shaft core on the fourth arc-shaped surface, the pressure caused by long-time load bearing of the lifting cylinder is reduced, and the service life of the lifting cylinder is prolonged.

Further, the barrel supporting assembly is further provided with a sliding cylinder, the sliding cylinder is horizontally and longitudinally fixedly installed on the table board, a piston rod of the sliding cylinder is fixedly connected with the barrel support, and the bottom of the barrel support is connected with the table board in a sliding mode through a sliding rail assembly which is horizontally and longitudinally arranged. Through the setting of the sliding cylinder, the cylinder support can be conveniently moved out of the bearing press-in area, and cylinder feeding is carried out outside the bearing press-in area, so that automatic feeding is facilitated.

Further, the cylinder pressing assembly is provided with a pressing plate and a pressing cylinder, the pressing cylinder is vertically and fixedly mounted above the cylinder supporting assembly, the pressing plate is fixedly mounted at the lower end of a piston rod of the pressing cylinder and located right above the cylinder support, and a fifth arc-shaped surface corresponding to the fourth arc-shaped surface is arranged on the lower surface of the pressing plate. Through the setting of the barrel pressing assembly, the stability of the barrel when the bearing is pressed in is guaranteed.

The cylinder ejection assembly is symmetrically arranged at two ends of the table board and is arranged between the bearing supporting assembly and the cylinder lifting assembly, the cylinder ejection assembly is provided with an ejection cylinder and a top plate, the ejection cylinder is vertically and upwards fixedly arranged on the table board, the top plate is fixedly arranged at the top of a piston rod of the ejection cylinder, and the upper end of the top plate is provided with a guide inclined plane inclined towards the discharging direction. Through the setting of the barrel ejection assembly, the automation of roller assembly is further improved.

Furthermore, the bearing support is provided with a bearing entering material channel on the outer side of the third arc-shaped surface, so that automatic bearing feeding is facilitated.

Further, a linear sliding assembly is installed at the bottom of the bearing support, and the bearing support is connected with the table top in a sliding mode through the linear sliding assembly.

Further, the table-board is provided with a bar-shaped through hole parallel to the slide rail of the sliding component on the outer side of the linear sliding component, the bearing support is provided with a sliding plate penetrating through the bar-shaped through hole, the pushing cylinder is fixedly installed on the lower surface of the table-board, and a piston rod of the pushing cylinder is fixedly connected with the bearing support through the sliding plate.

Furthermore, a limiting block used for limiting the initial position of the bearing support is installed on the sliding rail of the linear sliding assembly, and the limiting block is located between the bearing supporting assembly and the bearing pressing-in assembly.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the embodiments, and it is obvious that the described embodiments are some embodiments, not all embodiments of the present invention.

Drawings

Fig. 1 is a schematic view of a three-dimensional structure of the bearing press-in mechanism of the present invention.

Fig. 2 is the utility model discloses get rid of the perspective structure sketch map behind the barrel compresses tightly the subassembly.

Fig. 3 is a sectional view of the bearing press-in mechanism of the present invention.

Fig. 4 is a partial enlarged view of the bearing press-in mechanism of the present invention.

Fig. 5 is an enlarged view of a portion a of fig. 1.

Fig. 6 is an enlarged view of a portion B of fig. 3.

FIG. 7 is a schematic view of a roll structure.

Wherein the numbers and their corresponding part names in the figures are:

10. a frame, 11, a table top, 12, a strip-shaped through hole,

20. a cylinder supporting component, 21, a cylinder bracket, 211, a fourth arc surface,

22. a sliding cylinder, 23, a linear slide rail component, 30, a cylinder body pressing component,

31. a pressure plate 311, a fifth arc surface 32, a pressing cylinder,

40. a cylinder lifting component, 41 a supporting plate, 411 a first arc surface,

42. a lifting cylinder, 50, a cylinder ejection assembly, 51, a top plate,

52. an ejection cylinder, 60 bearing support components, 61 bearing supports,

62. a pushing cylinder, 63 linear sliding assemblies, 64 bearings enter the material channel,

65. a stop block 66, a sliding plate 67, a second arc-shaped surface,

68. a third arc-shaped surface, 70, a bearing press-in component, 71, a core adjusting head,

711. guide surface, 72, spring, 73, punch head,

74. a fixed seat, 75, a stamping cylinder, 76, a wire rail component,

80. roller 81, cylinder 82, axle core 83 and bearing.

Detailed Description

As shown in fig. 1, a bearing press-in mechanism includes a frame 10, a cylinder support assembly 20, a cylinder pressing assembly 30, two sets of cylinder lifting assemblies 40, two sets of cylinder ejecting assemblies 50, two sets of bearing support assemblies 60, and two sets of bearing press-in assemblies 70. The machine frame is provided with a table top 11, the barrel supporting component 20 is arranged in the center of the table top 11, the barrel pressing component 30 is arranged right above the barrel supporting component 20, and the bearing pressing component 70, the bearing supporting component 60, the barrel ejecting component 50 and the barrel lifting component 40 are symmetrically arranged on the table tops 11 on two sides of the barrel supporting component 20; the bearing press-in component 70, the bearing support component 60, the cylinder ejection component 50 and the cylinder lifting component 40 on the same side of the cylinder support component 20 are arranged in sequence from the outside to the center.

As shown in fig. 1-7, the barrel lifting assembly 40 is provided with a supporting plate 41 and a lifting cylinder 42 which is vertically upward, the cylinder body of the lifting cylinder 42 is fixed with the table top 11, the supporting plate 41 is fixedly installed at the top of the piston rod of the lifting cylinder 42, and the upper end of the supporting plate 41 is provided with a first arc surface 411 which is matched with the outer wall of the barrel. The bearing support assembly 60 is provided with a bearing support 61 and a pushing cylinder 62 horizontally and transversely installed, the cylinder body of the pushing cylinder 62 is fixedly connected with the table top 11, the front end of the piston rod of the pushing cylinder 62 is fixedly connected with the bearing support 61, the upper end of the inner side of the bearing support 61 is provided with a second arc-shaped surface 67 matched with the outer wall of the end part of the cylinder body and a third arc-shaped surface 68 connected to the outer side of the second arc-shaped surface 67 and matched with the outer wall of the outer ring of the bearing 83, and the height difference between the second arc-shaped surface 67 and the third arc-shaped surface 68 is just the thickness from the outer wall of the; the bearing support 61 is provided with a bearing entering material channel 64 on the outer side of the third arc-shaped surface 68, and the bearing entering material channels 64 on the two sides can be arranged on the same side or different sides, so that the automatic feeding of the bearing 83 is facilitated. The bearing bracket 61 is provided with a linear sliding assembly 63 at the bottom, and the bearing bracket 61 is connected with the table top 11 in a sliding manner through the linear sliding assembly 63. The table top 11 is provided with a bar-shaped through hole 12 parallel to the slide rail of the linear sliding assembly at the outer side of the linear sliding assembly 63, the bearing bracket 61 is provided with a sliding plate 66 penetrating through the bar-shaped through hole 12, the pushing cylinder 62 is fixedly installed at the lower surface of the table top 11, and the piston rod of the pushing cylinder 62 is fixedly connected with the bearing bracket 61 through the sliding plate 66. A stopper 65 for defining an initial position of the bearing bracket 61 is installed between the bearing support assembly 60 and the bearing press-in assembly 70. The bearing press-in component 70 is provided with a core adjusting head 71, a spring 72, a stamping head 73, a fixed seat 74 and a stamping cylinder 75 which is horizontally and transversely installed, the cylinder body of the stamping cylinder 75 is fixedly connected with the table-board 11 through a cylinder fixed frame, the fixed seat 74 is fixedly installed at the front end of a piston rod of the stamping cylinder 75, the bottom of the fixed seat is in sliding connection with the table-board 11 through a linear rail component 76, the stamping head 73 is fixedly installed on the front end surface of the fixed seat 74, the outer diameter of the stamping head 73 is smaller than the outer ring outer diameter of the bearing 83 and larger than the inner ring inner diameter of the bearing 83, the front end of the whole formed by the stamping head 73 and the fixed seat 74 is provided with a limiting groove which is collinear with the axis of the piston rod of the stamping cylinder 75, the rear end of the core adjusting head 71 is arranged in the limiting groove in a sliding mode through the spring 72, the front end of the stamping head 73, the outer diameter of the core adjusting head 71 is smaller than the inner diameter of the inner ring of the bearing 83 and larger than the aperture arranged at the end of the shaft core 82, when the spring 72 is in an initial state, the distance from the root of the guide surface 711 of the core adjusting head to the front end face of the punch 73 is larger than the thickness of the plurality of bearings 83 needing to be pressed in, when the spring 72 is compressed to a limit position, the root of the guide surface 711 of the core adjusting head can be retracted into the limit groove, and the depth of the limit groove, the length of the core adjusting head 71 and other relevant dimensions can be determined according to whether the two ends of the shaft core 82 extend out of the cylinder body and. Barrel supporting component 20 is equipped with barrel support 21 and sliding cylinder 22, and barrel support 21 installs at mesa 11 center, and barrel support 21 upper end is equipped with the fourth arcwall face 211 with barrel middle part outer wall assorted, the axis collineation of fourth arcwall face 211 and second arcwall face 67. The arrangement of the cylinder supporting component 20 is favorable for directly placing the cylinder and the shaft core 82 on the fourth arc-shaped surface 211, so that the pressure caused by the long-time load of the lifting cylinder 42 is reduced, and the service life of the lifting cylinder 42 is prolonged. The sliding cylinder 22 is horizontally and longitudinally fixedly installed on the table top 11, a piston rod of the sliding cylinder is fixedly connected with the cylinder support 21, and the bottom of the cylinder support 21 is in sliding connection with the table top 11 through a linear sliding rail assembly 23 which is horizontally and longitudinally arranged. Through the setting of cylinder 22 that slides, can conveniently transfer barrel support 21 out bearing press-in area, carry out the barrel material loading outside bearing press-in area, be convenient for carry out automatic material loading. Barrel compresses tightly subassembly 30 and is equipped with clamp plate 31 and compresses tightly cylinder 32, compresses tightly the vertical fixed mounting in barrel supporting component 20 top of cylinder 32, and clamp plate 31 fixed mounting compresses tightly cylinder 32 piston rod lower extreme, and is located directly over barrel support 21, and clamp plate 31 lower surface is equipped with the fifth arcwall face 311 corresponding with fourth arcwall face 211. Through the arrangement of the cylinder pressing assembly 30, the stability of the cylinder 81 when the bearing 83 is pressed in is ensured. The cylinder ejection assembly 50 is provided with an ejection cylinder 52 and a top plate 51, the ejection cylinder 52 is vertically and upwardly fixedly mounted on the table top 11, the top plate 51 is fixedly mounted on the top of a piston rod of the ejection cylinder 52, and the upper end of the top plate 51 is provided with a guide inclined surface inclined towards the discharging direction. The automation of roller assembly is further improved by the arrangement of the cylinder ejection assembly 50.

The utility model discloses the theory of operation: in an initial state, a bearing 83 enters the material channel 64 from the bearing to enter the third arc-shaped surface 68 to wait for being pressed in, piston rods of all cylinders are in a contraction state, the cylinder support 21 is arranged at one end of the table top 11, a cylinder 81 with a shaft core 82 and needing to be provided with the bearing 83 enters the material channel (not shown in the figure) from an external cylinder to enter the fourth arc-shaped surface 211 at the upper end of the cylinder support 21 or the cylinder 81 with the shaft core 82 is placed into the fourth arc-shaped surface 211 through a mechanical arm or a manual work, a piston rod of the sliding cylinder 22 stops acting after pushing the cylinder support 21 and the cylinder 81 on the cylinder support to enter the central position of the table top 11, a piston rod of the lifting cylinder 42 extends out, the first arc-shaped surface 411 of the supporting plate 41 supports the cylinder 81 and stops acting when the axis of the shaft core 82 at the bottom end of the cylinder 81 is lifted to be equal to the axis of the second arc-shaped surface 67, the pushing cylinder 62 works, the bearing support, the piston rod of the stamping cylinder 75 extends out to push the core adjusting head 71 on the stamping head 73 to penetrate through the inner hole of the bearing 83 to be inserted into the core fixing hole at the end of the shaft core 82 to axially position and support the shaft core 82, the piston rod of the lifting cylinder 42 retracts for a certain distance (or resets), the cylinder 81 is seated on the fourth arc-shaped surface 211 with the axis and the end (the shaft core is supported by the core adjusting heads 71 at the two ends and the position of the shaft core 82 is fixed), the pressing cylinder 32 works, the pressing plate 31 presses the cylinder 81, the piston rod of the stamping cylinder 75 continues to extend out, due to the action of the spring 72, the stamping head 73 is tightly attached to the bearing 83, then the bearing 83 is continuously pushed towards the direction of the cylinder 81 and the bearing 83 is pressed into the fixed position in the cylinder 81 to complete the assembly of the roller, then, the stamping cylinder 75, the pressing cylinder 32 and the pushing cylinder 62 are reset, the ejecting cylinder 52 works, the piston rod of the ejecting cylinder 52 drives the top plate 51 to rise The material receiving track is arranged (of course, the mode that the roller enters the material receiving track can be set according to the height of the material receiving track of the finished roller product receiving device, namely, a piston rod of the lifting cylinder 42 extends out, the ejection cylinder 52 works after the product is lifted to a proper height to directly push the roller into the material receiving track or the sliding cylinder 22 resets after the lifting cylinder 42 lifts the product to a certain height to pull the barrel support 21 away from a working area, the ejection cylinder 52 works after the piston rod of the lifting cylinder 42 works for pushing the roller into the material receiving track), and the sliding cylinder 22 and the ejection cylinder 52 reset.

The present invention is not limited to the above specific embodiments, and for those skilled in the art, the above conception can be used without any creative work, and all the changes made fall within the protection scope of the present invention.

Claims

1. The bearing press-in mechanism is characterized by comprising a rack, two groups of barrel lifting assemblies, two groups of bearing supporting assemblies and two groups of bearing press-in assemblies, wherein the rack is provided with a table board; the cylinder body lifting assembly is provided with a supporting plate and a lifting cylinder which is vertically upward, the cylinder body of the lifting cylinder is fixed with the table top, the supporting plate is fixedly arranged at the top of a piston rod of the lifting cylinder, and the upper end of the supporting plate is provided with a first arc-shaped surface matched with the outer wall of the cylinder body; the bearing support assembly is provided with a bearing support and a pushing cylinder horizontally and transversely installed, the cylinder body of the pushing cylinder is fixedly connected with the table top, the front end of a piston rod of the pushing cylinder is fixedly connected with the bearing support, the upper end of the inner side of the bearing support is provided with a second arc-shaped surface matched with the outer wall of the end part of the cylinder body and a third arc-shaped surface connected to the outer side of the second arc-shaped surface and matched with the outer wall of the bearing outer ring, and the height difference between the second arc-shaped surface and the third arc-shaped surface is just the thickness from the outer wall of the bearing outer ring to the; the bearing press-in component is provided with a core adjusting head, a spring, a stamping head, a fixed seat and a stamping cylinder horizontally and transversely installed, the cylinder body of the stamping cylinder is fixedly connected with the table-board, the fixed seat is fixedly installed at the front end of a piston rod of the stamping cylinder, the stamping head is fixedly installed on the front end surface of the fixed seat, the outer diameter of the stamping head is smaller than the outer diameter of a bearing outer ring and is larger than the inner diameter of a bearing inner ring, the front end of the whole formed by the stamping head and the fixed seat is provided with a limit groove which is collinear with the axis of the piston rod of the stamping cylinder, the core adjusting head is thin in front and thick in back, the outer diameter of the back end is matched with the limit groove, the back end of the core adjusting head is limited in the limit groove in a sliding mode through the spring, the front end of the stamping head extends out of the stamping head, the front end surface of the core adjusting head is provided with, when the spring is in an initial state, the distance from the root of the guide surface of the core adjusting head to the front end face of the stamping head is larger than the thickness of a plurality of bearings needing to be pressed in, and when the spring is compressed to the limit position, the root of the guide surface of the core adjusting head can be retracted into the limit groove.

2. The bearing press-in mechanism according to claim 1, further comprising a barrel support assembly, wherein the barrel support assembly is provided with a barrel support, the barrel support is mounted in the center of the table top, a fourth arc-shaped surface matched with the outer wall of the middle part of the barrel is arranged at the upper end of the barrel support, and the axis of the fourth arc-shaped surface is collinear with the axis of the second arc-shaped surface.

3. The bearing press-in mechanism according to claim 2, wherein the cylinder support assembly is further provided with a sliding cylinder, the sliding cylinder is horizontally and longitudinally fixedly installed on the table top, a piston rod of the sliding cylinder is fixedly connected with the cylinder support, and the bottom of the cylinder support is slidably connected with the table top through a sliding rail assembly which is horizontally and longitudinally arranged.

4. The bearing press-in mechanism according to claim 2, further comprising a barrel pressing assembly, wherein the barrel pressing assembly is provided with a pressing plate and a pressing cylinder, the pressing cylinder is vertically and fixedly installed above the barrel supporting assembly, the pressing plate is fixedly installed at the lower end of a piston rod of the pressing cylinder and is located right above the barrel support, and a fifth arc-shaped surface corresponding to the fourth arc-shaped surface is arranged on the lower surface of the pressing plate.

5. The bearing press-in mechanism according to claim 1, further comprising a barrel ejection assembly, wherein the barrel ejection assembly is symmetrically arranged at two ends of the table board and is arranged between the bearing support assembly and the barrel lifting assembly, the barrel ejection assembly is provided with an ejection cylinder and a top plate, the ejection cylinder is vertically and upwardly fixedly arranged on the table board, the top plate is fixedly arranged at the top of a piston rod of the ejection cylinder, and the upper end of the top plate is provided with a guide inclined surface inclined towards the discharging direction.

6. The bearing press-in mechanism of claim 1, wherein the bearing support is provided with a bearing entry gallery outboard of the third arcuate surface.

7. The bearing press-in mechanism according to claim 1, wherein a linear sliding assembly is mounted at the bottom of the bearing support, and the bearing support is slidably connected with the table top through the linear sliding assembly.

8. The bearing press-in mechanism according to claim 7, wherein the table top is provided with a strip-shaped through hole parallel to the slide rail of the linear sliding assembly on the outer side of the linear sliding assembly, the bearing support is provided with a sliding plate penetrating through the strip-shaped through hole, the pushing cylinder is fixedly arranged on the lower surface of the table top, and a piston rod of the pushing cylinder is fixedly connected with the bearing support through the sliding plate.

9. The bearing press-in mechanism according to claim 8, wherein a stopper is provided on the slide rail of the linear sliding assembly, and the stopper is located between the bearing support assembly and the bearing press-in assembly.