Automatic pin pressing machine

Abstract

The utility model relates to the field of bearing machining, in particular to an automatic pin pressing machine which comprises a machine base, a feeding assembly, a positioning assembly and a press fitting assembly, a positioning station and a press fitting station are arranged on the surface of the machine base, the positioning assembly is connected to the surface, facing the positioning station, of the machine base, and the feeding assembly is connected to the machine base; the press-fitting assembly comprises a press-fitting base, a lifting air cylinder, a material pushing air cylinder and a material pushing plate, the press-fitting base is connected to the surface, facing the press-fitting station, of the machine base, the material pushing air cylinder is connected to the surface of the press-fitting base, the lifting air cylinder is connected to a piston rod of the material pushing air cylinder, and the material pushing plate is connected to a piston rod of the lifting air cylinder. Through the arrangement of the assembling base, the material pushing air cylinder, the lifting air cylinder and the material pushing plate, automatic assembling of the pins in the pin holes in the bearings is achieved, workers do not need to manually embed the pins into the pin holes, the assembling efficiency of the pins is improved, the machining period of the deep groove ball bearings is shortened, and therefore the production cost of the deep groove ball bearings is reduced.

Description

Technical Field

[0001] This application relates to the field of bearing processing, and in particular to an automatic pin presser. Background Technology

[0002] Deep groove ball bearings are a widely used type of rolling bearing. They mainly consist of an outer ring, an inner ring, steel balls, and a cage. The steel balls are evenly distributed through the cage and form rolling contact with the grooves between the inner and outer rings. The outer circumferential surface of the outer ring has pin holes for pin insertion.

[0003] During the assembly of deep groove ball bearings, workers need to insert pins into the pin holes of the outer ring one by one. This repetitive action increases the labor intensity of the workers, reduces the assembly efficiency of the pins, and prolongs the processing cycle of the deep groove ball bearing, thereby increasing the production cost of the deep groove ball bearing. Utility Model Content

[0004] To improve the efficiency of pin assembly, this application provides an automatic pin pressing machine.

[0005] This application provides an automatic pin-pressing machine, which adopts the following technical solution:

[0006] An automatic pin-pressing machine includes a base, a feeding assembly, a positioning assembly, and a pressing assembly. The base has a positioning station and a pressing station on its surface. The positioning assembly is connected to the surface of the base facing the positioning station and is capable of clamping a bearing at the positioning station to form a positioning position. The pin holes of the bearing at the positioning station face the pressing station. The feeding assembly is connected to the base and is capable of transporting multiple pins to be placed sequentially at the pressing station. The axis of the pins at the pressing station coincides with the axis of the pin holes on the bearing at the positioning station. The pressing assembly includes a pressing seat and a lifting pneumatic device. The machine includes a cylinder, a pusher cylinder, and a pusher plate. The pressing base is connected to the surface of the machine base facing the pressing station. The pusher cylinder is connected to the surface of the pressing base. The piston rod axis of the pusher cylinder is parallel to the pin axis on the pressing station. The lifting cylinder is connected to the piston rod of the pusher cylinder. The piston rod axis of the lifting cylinder is perpendicular to the piston rod axis of the pusher cylinder. The pusher plate is connected to the piston rod of the lifting cylinder. When the lifting cylinder drives the pusher plate closer to the pin, the pusher plate is embedded between adjacent pins. The piston rod of the pusher cylinder extends, and the pusher plate pushes the pin into the pin hole on the bearing.

[0007] By adopting the above technical solution, the positioning component clamps the bearing with the pin holes on the bearing facing the pressing station, thus fixing the bearing on the machine base; at the same time, the feeding component transports multiple pins and places them sequentially on the pressing station, with the pin axis and the pin hole axis on the bearing coinciding. The piston rod of the lifting cylinder extends, driving the pusher plate to embed between adjacent pins. The piston rod of the pusher cylinder extends, and the pusher plate abuts against the pin end face, driving the other end of the pin to embed into the pin hole on the bearing at the positioning station. This achieves automated assembly of the pins in the pin holes on the bearing, eliminating the need for manual insertion of pins by operators, improving the assembly efficiency of pins, shortening the processing cycle of deep groove ball bearings, and thus reducing the production cost of deep groove ball bearings.

[0008] Optionally, the feeding assembly includes a vibratory feeder and a hose. The surface of the pressing seat facing the positioning station has a positioning cavity for the hose to be embedded. The inner wall of the positioning cavity abuts against the outer circumferential surface of the hose to form a limit. The inner cavity of the vibratory feeder stores pins. The end of the hose away from the pressing seat is connected to the discharge end of the vibratory feeder. The vibratory feeder can drive multiple pins to be embedded into the inner cavity of the hose in sequence.

[0009] By adopting the above technical solution, one end of the hose is connected to the discharge end of the vibratory feeder, and the other end of the hose is embedded in the positioning cavity. The inner wall of the positioning cavity abuts against the outer circumference of the hose to form a limit, so that the hose is not easy to deviate on the pressing seat. The vibratory feeder can push multiple pins to be embedded in the inner cavity of the hose. Adjacent pins push each other, driving the pins to be discharged from the inner cavity of the hose and enter the pressing station, realizing the automated feeding of pins.

[0010] Optionally, the positioning component includes a clamping cylinder and a positioning motor. The positioning motor is connected to the surface of the machine base facing the positioning station. The motor axis of the positioning motor and the piston rod axis of the lifting cylinder are parallel to each other. The clamping cylinder is connected to the motor shaft of the positioning motor. The clamping end of the clamping cylinder can clamp the outer peripheral surface of the bearing to form a limit.

[0011] By adopting the above technical solution, when the bearing is placed on the clamping cylinder, the clamping end of the clamping cylinder clamps the outer circumference of the bearing to form a limit, thereby fixing the bearing on the clamping cylinder; at the same time, the positioning motor drives the lifting cylinder to rotate, so that the pin hole on the bearing held by the clamping end of the clamping cylinder faces the hose opening, and the axis of the pin hole on the bearing coincides with the axis of the pin on the pressing station, thereby ensuring the stability of the pusher plate pushing the pin on the pressing station to embed into the pin hole on the bearing.

[0012] Optionally, the positioning assembly further includes a controller and a fiber optic sensor. The fiber optic sensor is connected to the surface of the press base facing the positioning station. The controller is electrically connected to the positioning motor and the fiber optic sensor. The fiber optic sensor can detect the position of the pin hole on the bearing at the positioning station and send it to the controller. The controller controls the positioning motor to start. The positioning motor drives the clamping cylinder to rotate, and the pin hole on the bearing held by the clamping end of the clamping cylinder faces the hose opening.

[0013] By adopting the above technical solution, when the clamping cylinder clamps the bearing, the fiber optic sensor detects the position of the pin hole on the bearing clamped by the clamping cylinder and sends it to the controller. The controller controls the positioning motor to run, and the positioning motor drives the clamping cylinder to rotate. The pin hole on the bearing clamped by the clamping cylinder faces the hose opening, realizing automatic alignment between the pin hole and the pin, thereby further improving the assembly efficiency of the pin.

[0014] Optionally, a conveyor belt is connected to the surface of the machine base. The transport direction of the conveyor belt is parallel to the axis of the piston rod of the pusher cylinder. The end face of the conveyor belt is used for bearing placement. The conveyor belt can drive multiple bearings to be placed sequentially on the surface of the clamping cylinder.

[0015] By adopting the above technical solution, the operator places multiple bearings on one end of the conveyor belt. The conveyor belt then drives the multiple bearings to approach the clamping cylinder in sequence. Adjacent bearings push against each other, causing the multiple bearings to be placed on the surface of the clamping cylinder in sequence. The piston rod of the clamping cylinder retracts, and the clamping end of the clamping cylinder clamps the outer circumference of the bearing to form a limit, thereby realizing automated feeding of bearings. This eliminates the need for operators to place the bearings on the surface of the clamping cylinder in sequence, thus reducing the workload of the operators and further improving the assembly efficiency of pins.

[0016] Optionally, it also includes a feeding assembly, which includes a feeding cylinder connected to the surface of the machine base. The piston rod axis of the feeding cylinder is perpendicular to the axis of the positioning motor, and the piston rod of the feeding cylinder faces the clamping end of the clamping cylinder.

[0017] By adopting the above technical solution, when the pin on the pin hole of the bearing held by the clamping cylinder is assembled, the piston rod of the clamping cylinder extends, the clamping end of the clamping cylinder disengages from the bearing, the clamping cylinder's clamping effect on the bearing disappears, the piston rod of the unloading cylinder extends, the piston rod surface of the unloading cylinder abuts against the bearing surface and pushes the bearing out of the clamping cylinder, thereby realizing the automated unloading of the bearing with the pin assembled.

[0018] Optionally, the feeding assembly further includes a feeding plate, which is connected to the piston rod surface of the feeding cylinder. When the piston rod of the feeding cylinder extends, the surface of the feeding plate abuts against the outer peripheral surface of the bearing and drives the bearing to disengage from the clamping cylinder.

[0019] By adopting the above technical solution, when the piston rod of the feeding cylinder extends, the feeding plate approaches the bearing, and the surface of the feeding plate abuts against the bearing surface, increasing the contact area between the feeding plate and the bearing. This allows the feeding cylinder to stably push the bearing away from the clamping cylinder through the feeding plate, thereby improving the stability of the bearing after the pin assembly is completed and it is released from the clamping cylinder.

[0020] Optionally, the unloading assembly further includes a second conveyor belt, which is connected to the surface of the machine base. The transport direction of the second conveyor belt is parallel to the axis of the piston rod of the unloading cylinder. The second conveyor belt and the unloading cylinder are located on both sides of the clamping cylinder, and the end face of the second conveyor belt is used for placing the bearing. When the piston rod of the unloading cylinder extends, the surface of the unloading plate abuts against the outer circumferential surface of the bearing and drives the bearing to disengage from the clamping cylinder and enter the end face of the second conveyor belt.

[0021] By adopting the above technical solution, the second conveyor belt and the unloading cylinder are located on both sides of the clamping cylinder. When the piston rod of the unloading cylinder extends, the surface of the unloading plate abuts against the outer circumference of the bearing and drives the bearing to disengage from the clamping cylinder and enter the end face of the second conveyor belt. The second conveyor belt drives the bearing with the pin assembly completed away from the positioning station, realizing the automated unloading of the bearing, thereby improving the automation of bearing assembly, shortening the bearing assembly cycle, and reducing the processing cost of the bearing.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. The assembly base, pusher cylinder, lifting cylinder and pusher plate enable automated assembly of the pins in the pin holes of the bearing, eliminating the need for manual insertion of the pins by the workers, improving the assembly efficiency of the pins, shortening the processing cycle of the deep groove ball bearing, and thus reducing the production cost of the deep groove ball bearing.

[0024] 2. The setup of the vibratory feeder and hose allows adjacent pins to push against each other, driving the pins out of the hose cavity and into the pressing station, thus achieving automated feeding of pins;

[0025] 3. The clamping cylinder and positioning motor are designed so that the axis of the pin hole on the bearing coincides with the axis of the pin on the pressing station, thereby ensuring the stability of the pusher plate pushing the pin on the pressing station into the pin hole on the bearing. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this application.

[0027] Figure 2 This is a partial structural diagram of an embodiment of this application.

[0028] Figure 3This is a schematic diagram of the overall structure of the clamping cylinder and the positioning motor in the embodiments of this application.

[0029] Explanation of reference numerals in the attached drawings: 1. Base; 2. Feeding assembly; 21. Vibratory feeder; 22. Hose; 3. Positioning assembly; 31. Clamping cylinder; 311. Body; 312. Piston part; 313. Clamping part; 32. Positioning motor; 33. Fiber optic sensor; 4. Pressing assembly; 41. Pressing seat; 411. Positioning cavity; 42. Lifting cylinder; 43. Pushing cylinder; 44. Pushing plate; 5. Unloading assembly; 51. Unloading cylinder; 52. Unloading plate; 53. Conveyor belt two; 6. Conveyor belt one. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0031] This application discloses an automatic pin-pressing machine. (Refer to...) Figure 1 The automatic pin-pressing machine includes a base 1, a feeding assembly 2, a positioning assembly 3, a pressing assembly 4, and a discharging assembly 5. The bottom of the base 1 abuts against the ground to form support. The surface of the base 1 is provided with a positioning station and a pressing station. The positioning assembly 3 is connected to the surface of the base 1 facing the positioning station. The positioning assembly 3 can clamp the bearing at the positioning station to form a positioning, and the pin hole on the bearing at the positioning station faces the pressing station. The pressing assembly 4 is connected to the surface of the base 1 facing the pressing station. The pressing assembly 4 can push the pin at the pressing station to embed into the pin hole on the bearing at the positioning station. The feeding assembly 2 and the discharging assembly 5 are connected to the surface of the base 1 at intervals. The feeding assembly 2 can sequentially supply pins to the pressing station. The discharging assembly 5 can push the bearing with the pin assembled at the positioning station to disengage from the positioning assembly 3, realizing the automated assembly of the pins embedded in the pin holes of the bearing, improving the assembly efficiency of the pins, shortening the processing cycle of the bearing, and thus reducing the processing cost of the bearing.

[0032] Reference Figure 1 and Figure 2 The pressing assembly 4 includes a pressing base 41, a lifting cylinder 42, a pushing cylinder 43, and a pushing plate 44. The pressing base 41 is fixed to the surface of the machine base 1 facing the pressing station by bolts. The pushing cylinder 43 is fixed to the top surface of the pressing base 41 by bolts. The piston rod axis of the pushing cylinder 43 is parallel to the length direction of the machine base 1 and the piston rod of the pushing cylinder 43 faces the positioning station. The lifting cylinder 42 is fixed to the piston rod of the pushing cylinder 43 by bolts. The piston rod axis of the lifting cylinder 42 is parallel to the height direction of the machine base 1 and the piston rod of the lifting cylinder 42 faces the pressing station. The pushing plate 44 is fixed to the piston rod surface of the lifting cylinder 42 by bolts.

[0033] Reference Figure 1 and Figure 2When the pin is located at the press-fitting station and the pin hole on the bearing at the positioning station faces the pin, the piston rod of the lifting cylinder 42 extends, the push plate 44 abuts against the end face of the pin away from the bearing, the piston rod of the push cylinder 43 extends, and the push plate 44 drives the pin to approach the bearing at the positioning station. The end of the pin is embedded in the pin hole on the bearing, realizing the automated assembly of the pin in the pin hole on the bearing.

[0034] Reference Figure 1 and Figure 2 The feeding assembly 2 includes a vibratory feeder 21 and a flexible hose 22. The bottom of the vibratory feeder 21 abuts against the ground to form a support. The inner cavity of the vibratory feeder 21 stores pins. The vibratory feeder 21 can drive multiple pins to be discharged sequentially from the discharge end of the vibratory feeder 21. The surface of the pressing seat 41 has a positioning cavity 411 for the end of the flexible hose 22 to be inserted. The inner wall of the positioning cavity 411 abuts against the outer circumference of the flexible hose 22 to form a limit. The axis of the flexible hose 22 coincides with the axis of the pin hole on the bearing at the positioning station. The end of the flexible hose 22 away from the pressing seat 41 is fixed to the discharge end of the vibratory feeder 21 by a flange. The vibratory feeder 21 drives multiple pins to be inserted sequentially into the inner cavity of the flexible hose 22. Adjacent pins push each other, driving the pins from the inner cavity of the flexible hose 22 into the pressing station, realizing automated feeding of pins and further improving the automation of the assembly of pins being inserted into the pin holes on the bearing.

[0035] Reference Figure 1 and Figure 2 A conveyor belt 6 is installed on the surface of the base 1. The transport direction of the conveyor belt 6 is parallel to the length direction of the base 1. The conveyor belt 6 and the vibratory plate 21 are located on both sides of the positioning component 3. The end face of the conveyor belt 6 is used for bearing placement. The conveyor belt 6 can push multiple bearings to be embedded into the positioning component 3 in sequence, so as to realize the automated feeding of bearings.

[0036] Reference Figure 2 and Figure 3 The positioning component 3 includes a clamping cylinder 31, a positioning motor 32, a controller, and a fiber optic sensor 33. The positioning motor 32 is fixed to the surface of the base 1 facing the positioning station by bolts. The motor axis of the positioning motor 32 is parallel to the height direction of the base 1. The clamping cylinder 31 includes a body 311, two piston parts 312, and two clamping parts 313. The body 311 is fixed to the motor shaft of the positioning motor 32 by bolts. The end face of the body 311 is for the bearing on the conveyor belt 6 to be embedded. The two piston parts 312 are slidably connected to both sides of the body 311, and the sliding direction of the piston parts 312 is perpendicular to the motor axis of the positioning motor 32. The clamping parts 313 are fixed one-to-one on the end face of the piston parts 312 away from the body 311. When the bearing on the conveyor belt 6 is embedded in the end face of the body 311, the two piston parts 312 retract, and the two clamping parts 313 move closer to each other. The end faces of the two clamping parts 313 that face each other press against the outer circumferential surface of the bearing to form a limit, thereby fixing the bearing on the clamping cylinder 31.

[0037] Reference Figure 2 and Figure 3 The fiber optic sensor 33 is fixed to the surface of the press base 41 facing the positioning station by bolts. The controller is electrically connected to the positioning motor 32 and the fiber optic sensor 33. The fiber optic sensor 33 can detect the position of the pin hole on the bearing at the positioning station and send it to the controller. The controller controls the positioning motor 32 to start, and the positioning motor 32 drives the body 311 to rotate, so that the pin hole on the bearing on the body 311 faces the opening of the hose 22, realizing the automatic adjustment of the bearing orientation at the positioning station, thereby improving the assembly accuracy of the pin being embedded in the pin hole on the bearing.

[0038] Reference Figure 2 and Figure 3 The unloading assembly 5 includes an unloading cylinder 51, an unloading plate 52, and a second conveyor belt 53. The unloading cylinder 51 is fixed to the surface of the machine base 1 by bolts. The piston rod axis of the unloading cylinder 51 is parallel to the width direction of the machine base 1, and the piston rod face of the unloading cylinder 51 faces the positioning station. The unloading plate 52 is fixed to the piston rod face of the unloading cylinder 51 by bolts. The second conveyor belt 53 is connected to the surface of the machine base 1. The transport direction of the second conveyor belt 53 is parallel to the piston rod axis of the unloading cylinder 51. The end face of the second conveyor belt 53 is used to place the bearing assembled with pins. The second conveyor belt 53 and the unloading cylinder 51 are located on both sides of the main body 311.

[0039] Reference Figure 2 and Figure 3 When the pusher plate 44 pushes the pin into the pin hole on the bearing, the two piston parts 312 extend, causing the two clamping parts 313 to move away from each other. The clamping effect of the clamping parts 313 on the bearing disappears, the piston rod of the unloading cylinder 51 extends, the surface of the unloading plate 52 abuts against the bearing surface and pushes the bearing away from the body 311 and into the end face of the conveyor belt 2 53, realizing the automated unloading of the bearing with the pin assembled on the body 311, thereby further improving the automated assembly of the pin into the pin hole on the bearing.

[0040] The implementation principle of an automatic pin-pressing machine according to an embodiment of this application is as follows: Conveyor belt 6 drives multiple bearings to be sequentially embedded into the end face of the main body 311. Two piston parts 312 retract, and two clamping parts 313 move closer to each other. The end faces of the two clamping parts 313, facing each other, press against the outer circumferential surface of the bearing to form a limit, thus fixing the bearing on the clamping cylinder 31. Fiber optic sensor 33 detects the position of the pin hole on the bearing at the positioning station and sends it to the controller. The controller controls the positioning motor 32 to start, driving the main body 311 to rotate, so that the pin hole on the bearing on the main body 311 faces the opening of the flexible tube 22, realizing automated adjustment of the bearing orientation at the positioning station. Vibrating plate 21 drives multiple pins to be sequentially embedded into the inner cavity of the flexible tube 22. Adjacent pins push each other, driving the pins from the inner cavity of the flexible tube 22 into the pressing station, realizing automated feeding of the pins. Lifting cylinder 42 piston rod extends... When the pusher plate 44 abuts against the end face of the pin away from the bearing, the piston rod of the pusher cylinder 43 extends, and the pusher plate 44 drives the pin closer to the bearing at the positioning station. The end of the pin is embedded in the pin hole on the bearing, realizing the automated assembly of the pin in the pin hole on the bearing. The two piston parts 312 extend, driving the two clamping parts 313 to move away from each other. The clamping effect of the clamping parts 313 on the bearing disappears. The piston rod of the unloading cylinder 51 extends, and the surface of the unloading plate 52 abuts against the bearing surface and pushes the bearing away from the body 311 and embeds it into the end face of the conveyor belt 2 53, realizing the automated unloading of the bearing with the pin assembled on the body 311. This further improves the automated assembly of the pin embedded in the pin hole on the bearing, eliminating the need for manual insertion of the pin by the operator, improving the assembly efficiency of the pin, shortening the processing cycle of the deep groove ball bearing, and thus reducing the production cost of the deep groove ball bearing.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automatic pin-pressing machine, characterized in that: The assembly includes a base (1), a feeding assembly (2), a positioning assembly (3), and a pressing assembly (4). The base (1) has a positioning station and a pressing station on its surface. The positioning assembly (3) is connected to the surface of the base (1) facing the positioning station. The positioning assembly (3) can clamp the bearing on the positioning station to form a positioning, and the pin hole on the bearing on the positioning station faces the pressing station. The feeding assembly (2) is connected to the base (1). The feeding assembly (2) can transport multiple pins and place them sequentially on the pressing station. The pin axis on the pressing station coincides with the axis of the bearing pin hole on the positioning station. The pressing assembly (4) includes a pressing seat (41), a lifting cylinder (42), a pushing cylinder (43), and a pushing plate (44). The pressing seat (41) is connected to the surface of the machine base (1) facing the pressing station. The pushing cylinder (43) is connected to the surface of the pressing seat (41). The piston rod axis of the pushing cylinder (43) is parallel to the pin axis on the pressing station. The lifting cylinder (42) is connected to the piston rod of the pushing cylinder (43). The piston rod axis of the lifting cylinder (42) is perpendicular to the piston rod axis of the pushing cylinder (43). The pushing plate (44) is connected to the piston rod of the lifting cylinder (42). When the lifting cylinder (42) drives the pushing plate (44) to approach the pin, the pushing plate (44) is embedded between adjacent pins. The piston rod of the pushing cylinder (43) extends out, and the pushing plate (44) pushes the pin to embed into the pin hole on the bearing.

2. The automatic pin-pressing machine according to claim 1, characterized in that: The feeding assembly (2) includes a vibratory plate (21) and a hose (22). The pressing seat (41) has a positioning cavity (411) on its surface facing the positioning station for the hose (22) to be embedded. The inner wall of the positioning cavity (411) abuts against the outer circumferential surface of the hose (22) to form a limit. The inner cavity of the vibratory plate (21) is used to store pins. The end of the hose (22) away from the pressing seat (41) is connected to the discharge end of the vibratory plate (21). The vibratory plate (21) can drive multiple pins to be embedded into the inner cavity of the hose (22) in sequence.

3. The automatic pin-pressing machine according to claim 2, characterized in that: The positioning component (3) includes a clamping cylinder (31) and a positioning motor (32). The positioning motor (32) is connected to the surface of the machine base (1) facing the positioning station. The motor axis of the positioning motor (32) and the piston rod axis of the lifting cylinder (42) are parallel to each other. The clamping cylinder (31) is connected to the motor shaft of the positioning motor (32). The clamping end of the clamping cylinder (31) can clamp the outer circumferential surface of the bearing to form a limit.

4. The automatic pin-pressing machine according to claim 3, characterized in that: The positioning component (3) also includes a controller and an optical fiber sensor (33). The optical fiber sensor (33) is connected to the surface of the press base (41) facing the positioning station. The controller is electrically connected to the positioning motor (32) and the optical fiber sensor (33). The optical fiber sensor (33) can detect the position of the pin hole on the bearing at the positioning station and send it to the controller. The controller controls the positioning motor (32) to start. The positioning motor (32) drives the clamping cylinder (31) to rotate. The pin hole on the bearing clamped by the clamping end of the clamping cylinder (31) faces the opening of the hose (22).

5. The automatic pin-pressing machine according to claim 1, characterized in that: The base (1) is connected to a conveyor belt (6). The transport direction of the conveyor belt (6) is parallel to the piston rod axis of the pusher cylinder (43). The end face of the conveyor belt (6) is for placing bearings. The conveyor belt (6) can drive multiple bearings to be placed sequentially on the surface of the clamping cylinder (31).

6. The automatic pin-pressing machine according to claim 3, characterized in that: It also includes a feeding assembly (5), which includes a feeding cylinder (51). The feeding cylinder (51) is connected to the surface of the machine base (1). The piston rod axis of the feeding cylinder (51) is perpendicular to the motor axis of the positioning motor (32). The piston rod of the feeding cylinder (51) faces the clamping end of the clamping cylinder (31).

7. The automatic pin-pressing machine according to claim 6, characterized in that: The feeding assembly (5) also includes a feeding plate (52), which is connected to the piston rod surface of the feeding cylinder (51). When the piston rod of the feeding cylinder (51) extends, the surface of the feeding plate (52) abuts against the outer peripheral surface of the bearing and drives the bearing to disengage from the clamping cylinder (31).

8. The automatic pin-pressing machine according to claim 7, characterized in that: The feeding assembly (5) also includes a second conveyor belt (53), which is connected to the surface of the base (1). The transport direction of the second conveyor belt (53) is parallel to the axis of the piston rod of the feeding cylinder (51). The second conveyor belt (53) and the feeding cylinder (51) are located on both sides of the clamping cylinder (31), and the end face of the second conveyor belt (53) is used for bearing placement. When the piston rod of the feeding cylinder (51) extends, the surface of the feeding plate (52) abuts against the outer circumference of the bearing and drives the bearing to disengage from the clamping cylinder (31) and enter the end face of the second conveyor belt (53).

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