Automatic assembling machine for planar needle roller bearing

Abstract

The present invention discloses an automatic assembly machine for a planar needle roller bearing, which includes a base and a multi-station turntable arranged on the base and driven by a driving mechanism. On the base outside the multi-station turntable, there are successively arranged a first automatic feeding mechanism for loading the seat ring, a first installation mechanism for installing the cage on the seat ring, a first automatic feeding mechanism for loading the shaft ring, a second installation mechanism for installing the shaft ring on the seat ring, and a blanking mechanism. On one side of the first installation mechanism, there is a second automatic feeding mechanism for loading the cage. The present invention uses the multi-station turntable, the first automatic feeding mechanism, the first installation mechanism, the second automatic feeding mechanism, the second installation mechanism and the blanking mechanism in cooperation to achieve automatic assembly, eliminating manual feeding and assembly, improving work efficiency and ensuring product consistency.

Description

Technical Field

[0001] The present invention relates to an automatic assembly machine for a planar needle roller bearing. Background Art

[0002] A planar needle roller bearing generally consists of a cage, an inner ring, and an outer ring. When installing, the cage needs to be installed on the outer ring first, and then the inner ring is snapped onto the outer ring. Existing planar needle roller bearings are all assembled manually by workers, and the consistency of the assembled products cannot be guaranteed, and the work efficiency is low. Summary of the Invention

[0003] To overcome the above disadvantages, the purpose of the present invention is to provide an automatic assembly machine for a planar needle roller bearing that can ensure product consistency and improve production efficiency.

[0004] To achieve the above object, the technical solution adopted by the present invention is: an automatic assembly machine for a planar needle roller bearing, including a base and a multi-station turntable arranged on the base and driven by a driving mechanism. On the base outside the multi-station turntable, there are successively arranged a first automatic feeding mechanism for loading the outer ring, a first installation mechanism for installing the cage on the outer ring, a first automatic feeding mechanism for loading the inner ring, a second installation mechanism for installing the inner ring on the outer ring, and a blanking mechanism. On one side of the first installation mechanism, there is a second automatic feeding mechanism for loading the cage. The beneficial effect of the present invention: By using the multi-station turntable, the first automatic feeding mechanism, the first installation mechanism, the second automatic feeding mechanism, the second installation mechanism, and the blanking mechanism in cooperation, automatic assembly is realized, manual feeding and assembly are eliminated, the work efficiency is improved, and the consistency of the products is guaranteed.

[0005] Preferably, the first automatic feeding mechanism includes a loading component, a feeding conveyor frame, and a plurality of carrier jigs.

[0006] The plurality of carrier jigs are placed in a ring shape and are all driven to rotate at the bottom by a motor. On each carrier jig, there are placed an outer ring substrate and a plurality of outer rings, and the plurality of outer rings are all located above the outer ring substrate.

[0007] A push plate is slidably arranged on the loading component. The push plate is located below the outer ring substrate and can contact it, and the push plate is driven by a servo motor to push the outer ring substrate to move upward.

[0008] One end of the feeding conveyor rack is located above one of the vehicle fixtures. A pneumatic gripper is slidably arranged on the feeding conveyor rack. When the pneumatic gripper slides to the end of the feeding conveyor rack located above the vehicle fixture, the pneumatic gripper can engage with the seat ring at the topmost end of the vehicle fixture and move it. The seat ring placed on the vehicle fixture is clamped and moved for feeding by the pneumatic gripper on the feeding conveyor rack. At the same time, the servo motor drives the push plate on the loading component of the fixture to push the seat ring substrate of the feeding conveyor rack, so that the seat ring placed on the seat ring substrate moves upward to a position where the pneumatic gripper can engage. After the seat ring on one vehicle fixture is clamped, the motor drives the bottom of the vehicle fixture to rotate to the next vehicle fixture. The structure is simple, and the automatic and rapid feeding of the seat ring is realized, achieving the effects of saving time and labor and improving work efficiency.

[0009] Preferably, the first installation mechanism includes a retainer press-fitting component. The retainer press-fitting component includes a press-fitting fixed seat, a press-fitting guide rail, a press-fitting slider, a first press-fitting block, and a press-fitting device driving cylinder. The press-fitting guide rail is fixedly arranged on the press-fitting fixed seat and is perpendicular to the horizontal plane. The press-fitting block is slidably arranged on the press-fitting guide rail through the press-fitting slider, and the telescopic shaft of the press-fitting device driving cylinder is connected to the press-fitting slider.

[0010] Preferably, the first press-fitting block includes a guiding block, a squeezing block, and a pressing head block. A through convex platform channel and a platform channel are arranged in the guiding block. The pressing head block is arranged in the platform channel and can slide up and down along the platform channel. Two strip-shaped holes are arranged on the squeezing block, and the length direction of the strip-shaped holes intersects with the vertical line to form a certain acute angle. Two circular hole channels penetrating from front to back are arranged on the guiding block, and the circular hole channels are both communicated with the convex platform channel. A metal rod is installed in each circular hole channel, and the metal rod passes through the corresponding strip-shaped hole. The width of the convex platform channel is greater than the width of the squeezing block, and the squeezing block slides up and down in the convex platform channel and can move horizontally. The retainer press-fitting component starts to move vertically driven by the press-fitting guide rail and the press-fitting slider, and the press-fitting block moves downward. The squeezing head first contacts the retainer. Due to the inclined strip-shaped holes of the squeezing head, when the squeezing head retracts, there is also a certain displacement in the horizontal direction of the squeezing head, so as to expand the retainer from the inside to the outside. At this time, the pressing head block contacts the retainer and presses downward to complete the installation of the retainer and the seat ring. The setting of two groups of retainer press-fitting components can avoid damage to the retainer when the pressing head block expands it.

[0011] Preferably, the second installation mechanism includes a shaft ring press-fitting assembly, which includes a press-fitting fixed seat, a press-fitting guide rail, a press-fitting slider, a second press-fitting block, and a press-fitting device driving cylinder. The press-fitting guide rail is fixedly arranged on the press-fitting fixed seat and is perpendicular to the horizontal plane. The second press-fitting block is slidably arranged on the press-fitting guide rail through the press-fitting slider, and the telescopic shaft of the press-fitting device driving cylinder is connected to the press-fitting slider.

[0012] Preferably, it further includes a retainer pre-assembly component, which includes a pre-assembly device driving cylinder, a pre-assembly fixed seat, a pre-assembly guide rail, and a pre-assembly block. The pre-assembly fixed seat is fixedly arranged on the base, the pre-assembly guide rail is fixedly arranged on the pre-assembly fixed seat, the telescopic shaft of the pre-assembly device driving cylinder is connected to the pre-assembly slider, the pre-assembly block is slidably arranged on the pre-assembly guide rail through the pre-assembly slider, and the pre-assembly block can slide to the upper surface of the seat ring fixing block. The retainer pre-assembly component can make the inclined retainer closely contact with two adjacent limit blocks on the seat ring first, which is convenient for the next step of tensioning and pressing.

[0013] Preferably, the second automatic feeding mechanism includes a transmission component arranged on one side of the base and extending above the base. There is a concave platform for placing the retainer on the base at the output end of the transmission component. There is a rotary cylinder between the concave platform and the transmission component. The rotary cylinder is provided with a clamp that can grab the retainer from the transmission component to the concave platform. There is a feeding conveyor on one side of the concave platform. A pneumatic clamp is slidably arranged on the feeding conveyor. When the pneumatic clamp slides to one end of the feeding conveyor above the concave platform, the pneumatic clamp can be engaged with the retainer on the concave platform and move it.

[0014] Preferably, retainer recycling bins for collecting waste retainers are respectively arranged on both sides of the transmission component, and a retainer pushing component for pushing the waste retainer into the retainer recycling bin. The retainer pushing component includes a cylinder arranged on one side of the transmission component. The telescopic rod of the cylinder is connected to the pushing piece. A bearing is sleeved outside the pushing piece, and the bearing is simultaneously rotatably connected to a bearing seat arranged on one side of the transmission component.

[0015] Preferably, the blanking mechanism includes a blanking conveyor. A pneumatic clamp is slidably arranged on the blanking conveyor.

[0016] Preferably, an industrial camera for monitoring the production status is arranged above the working position of the multi-station turntable, which can improve the product qualification rate and reduce the product rejection rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 For the front view of the present invention Figure 1 ;

[0018] Figure 2 Cross-section of the present invention Figure 2 ;

[0019] Figure 3 Structural schematic diagram of the first mounting mechanism and the pre-assembled holder assembly of the present invention;

[0020] Figure 4 Structural schematic diagram of the first press-fitting block of the present invention;

[0021] Figure 5 Structural schematic diagram of the seat ring of the present invention. Specific embodiments

[0022] The following describes in detail the preferred embodiments of the present invention with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making the protection scope of the present invention more clearly defined.

[0023] See the attached Figure 5 : The needle roller thrust bearing includes a seat ring 332, a retainer and a shaft ring. The seat ring 332 has a circular hole in the center, and an annular protrusion is provided at the position of the circular hole. Four small limit blocks are provided at intervals of 90 degrees on the outer circle of the annular protrusion for fixing the retainer; the retainer is pressed against the seat ring 332 under the action of an external force, and the retainer and the seat ring 332 are engaged by the limit blocks; finally, under the action of an external force, the shaft ring is pressed to complete the assembly of the needle roller thrust bearing.

[0024] See the attached Figures 1-4 As shown, an automatic assembly machine for a needle roller thrust bearing in this embodiment includes a base 1 and a multi-station turntable 2 disposed on the base 1 and driven by a driving mechanism. On the base 1 outside the multi-station turntable 2, a first automatic feeding mechanism 3 for loading the seat ring, a first mounting mechanism 4 for installing the retainer on the seat ring, a first automatic feeding mechanism 3 for loading the shaft ring, a second mounting mechanism 7 for installing the shaft ring on the seat ring, and a blanking mechanism 8 are sequentially provided. A second automatic feeding mechanism 6 for loading the retainer is provided on one side of the first mounting mechanism. In order to facilitate the positioning of the seat ring, a seat ring fixing block 55 is provided on the station of the multi-station turntable 2. In this embodiment, the driving mechanism is a motor, and the multi-station turntable 2 is a four-station turntable. During use, the first automatic feeding mechanism 3 loads the seat ring onto the four-station turntable, the driving mechanism drives the four-station turntable to rotate clockwise by 90 degrees, the retainer is loaded through the second automatic feeding mechanism 6 and installed on the seat ring through the first mounting mechanism 4, the driving mechanism drives the four-station turntable to rotate clockwise by 90 degrees, the first automatic feeding mechanism 3 loads the shaft ring onto the retainer, and presses it through the second mounting mechanism 7. The driving mechanism drives the four-station turntable to rotate clockwise by 90 degrees, and the blanking mechanism 8 unloads to complete one production process.

[0025] Among them, the first automatic feeding mechanism 3 includes a loading component 31, a feeding conveyor frame 32, and a plurality of carrier jigs 33. The plurality of carrier jigs 33 are placed in a ring shape and are all driven to rotate at the bottom by a motor. A seat ring substrate 331 and a plurality of seat rings 332 are placed on each carrier jig 33. The plurality of seat rings 332 are all located above the seat ring substrate 331. A push plate 34 is slidably arranged on the loading component 31. One end of the push plate 34 is located below the seat ring substrate 331 and can contact it. And the push plate 34 is driven by a servo motor to push the seat ring substrate 331 to move upward. One end of the feeding conveyor frame 32 is located above one of the carrier jigs 33. A pneumatic gripper 321 is slidably arranged on the feeding conveyor frame 32. When the pneumatic gripper 321 slides to one end of the feeding conveyor frame 32 located above the carrier jig 33, the pneumatic gripper 321 can clamp and move the seat ring 91 located at the top of the carrier jig 33. An in-position sensor is arranged on the base 1, and the ray of the in-position sensor can intersect with the seat ring 332 located at the top of the carrier jig 33. In order to adjust the angle of the seat ring, an adjustment table can also be arranged on the base 1. The adjustment table is located below the feeding conveyor frame 32, and a rotating table is arranged on the adjustment table. The rotating table is driven by a servo motor to drive the seat ring thereon to rotate. An angle vision detection camera is arranged on the pneumatic gripper 321. The servo motor drives the push plate 34 slidably arranged on the jig loading component 31 to be located below the seat ring substrate 331 and push it upward by a distance of one seat ring 332. When the pneumatic gripper 321 slidably arranged on the feeding conveyor frame 32 reaches one end of the feeding conveyor frame 32, it clamps the seat ring 332 placed at the top of the carrier jig 33 and moves to the other end. At the same time, the angle vision detection camera detects whether the angle of the seat ring 332 meets the feeding condition. Then, by placing the seat ring 332 on the rotating table, the rotating table is driven by a servo motor to drive the seat ring 332 to rotate and adjust the position. After the pneumatic gripper 321 clamps the seat ring 332 with the adjusted angle and places it on the seat ring fixing block 55, it returns to its original position. When the transportation of the seat rings 332 on one carrier jig 33 is completed, the in-position sensor will detect it. The push plate 34 moves downward and moves below the seat ring substrate 331. Then the motor drives the carrier jig 33 to rotate, and the loading of the next row of seat rings starts.

[0026] The first installation mechanism 4 includes a retainer press-fitting assembly, and the retainer press-fitting assembly includes a press-fitting fixed seat 41, a press-fitting guide rail 42, a press-fitting slider 43, a first press-fitting block 44, and a press-fitting device driving cylinder. The press-fitting guide rail 42 is fixedly arranged on the press-fitting fixed seat 41, and the press-fitting guide rail 42 is arranged perpendicular to the horizontal plane. The press-fitting block 44 is slidably arranged on the press-fitting guide rail 42 through the press-fitting slider 43, and the telescopic shaft of the press-fitting device driving cylinder is connected to the press-fitting slider 43. Specifically, the first press-fitting block 44 includes a guide block 443, an extrusion block 444, a press head block 445, a mounting plate 441, and a boss 442. The press head block 445 is fixedly connected to the press-fitting slider 43 through the mounting plate 441. A boss 442 is arranged on the guide block 443, and the guide block 443 is fixedly connected to the mounting plate 441 through the boss 442. A boss channel and a platform channel that penetrate up and down are arranged in the guide block 443. The extrusion block 444 is movably installed in the boss channel, and the press head block 445 is movably arranged in the platform channel. Two strip-shaped holes 446 are arranged on the extrusion block 444. The length direction of the strip-shaped holes 446 intersects with the axial direction of the extrusion block 444 to form a certain acute angle. Two circular holes that penetrate through from front to back are arranged on the guide block 443. The circular holes are respectively communicated with the boss channel. Metal rods are installed in the circular holes, and the metal rods pass through the corresponding strip-shaped holes 446. Springs are arranged in the boss channel and the platform channel. The two ends of the springs respectively abut against the lower plate surface of the mounting plate 441 and the upper surfaces of the extrusion block 444 and the press head block 445. The arrangement of the springs can prevent the press head block 445 from not effectively pressing the retainer and the seat ring, ensure the success rate of the press-fitting, and at the same time ensure that the press head block 445 and the extrusion block 444 can have a proper elastic contraction. The arrangement of the springs can give a certain elastic force to the press head block 445 and the extrusion block 444 to ensure that the press head block 445 and the extrusion block 444 will not damage the retainer during the press-fitting process. At the same time, through the inclined arrangement of the strip-shaped holes 446, it is ensured that the extrusion block 444 moves horizontally to a certain position during the downward pressing process, thereby expanding the retainer, and at the same time the press head block 444 presses downward to complete the engagement of the retainer and the seat ring 332.

[0027] The second installation mechanism 7 includes an axle ring press-fitting assembly. The axle ring press-fitting assembly includes a press-fitting fixed seat 71, a press-fitting guide rail 72, a press-fitting slider 73, a second press-fitting block 74, and a press-fitting device driving cylinder. The press-fitting guide rail 72 is fixedly arranged on the press-fitting fixed seat 71, and the press-fitting guide rail 72 is arranged perpendicular to the horizontal plane. The second press-fitting block 74 is slidably arranged on the press-fitting guide rail 72 through the press-fitting slider 43, and the telescopic shaft of the press-fitting device driving cylinder is connected to the press-fitting slider 73. After the axle ring is placed on the retainer, the press-fitting device driving cylinder drives the press-fitting slider 73 to slide on the press-fitting guide rail 72, driving the second press-fitting block 74 to press the axle ring onto the seat ring 332.

[0028] In order to enable the retainer to be pre-engaged with the seat ring 332 and increase the success rate of engagement, the first mounting mechanism 4 and the second mounting mechanism 7 further include a retainer pre-assembly component 5. The retainer pre-assembly component includes a pre-assembly device drive cylinder, a pre-assembly fixed seat 51, a pre-assembly guide rail 52, and a pre-assembly block 53. The pre-assembly fixed seat 51 is fixedly arranged on the base 1, the pre-assembly guide rail 52 is fixedly arranged on the pre-assembly fixed seat 51, the telescopic shaft of the pre-assembly device drive cylinder is connected to a pre-assembly slider 54, the pre-assembly block 53 is slidably arranged on the pre-assembly guide rail 52 through the pre-assembly slider 54, and the pre-assembly block 53 can slide to the upper surface of the seat ring fixing block 55.

[0029] The second automatic feeding mechanism 6 includes a transmission component 61 arranged on one side of the base 1 and extending above the base 1. There is a concave platform 62 for placing the retainer on the base 1 at the output end of the transmission component 61. A rotary cylinder 63 is arranged between the concave platform 62 and the transmission component 61. A clamping jaw 64 capable of grasping the retainer from the transmission component 61 to the concave platform 62 is arranged on the rotary cylinder 63. A feeding conveyor frame 38 is arranged on one side of the concave platform 62. A pneumatic clamping jaw 381 is slidably arranged on the feeding conveyor frame 38. When the pneumatic clamping jaw 381 slides to one end of the feeding conveyor frame 38 above the concave platform 62, the pneumatic clamping jaw 381 can engage with the retainer on the concave platform 62 and drive it to move. In order to enable the retainer on the concave platform 62 to be fed at a better angle, a rotary motor is arranged below the concave platform 62 to drive it to rotate the retainer by a certain angle, which is convenient for the subsequent engagement of the retainer. An angle vision detection camera is arranged on the clamping jaw to detect the angle. The retainer is transmitted to the output end of the transmission component 61 through the transmission component 61. The clamping jaw 64 clamps the retainer, and the rotary cylinder 63 rotates to drive the clamping jaw 64 to rotate, so that the retainer is moved from the transmission component 61 to the concave platform 62. The drive motor drives the concave platform 62 to rotate to the required angle, and the pneumatic clamping jaw 381 on the feeding conveyor frame 38 grabs it to the working position.

[0030] In addition, on both sides of the transmission component 61, there are respectively provided a retainer recycling bin 65 for collecting waste retainers and a retainer pushing component 66 for pushing the waste retainers into the interior of the retainer recycling bin. The retainer pushing component 66 includes a cylinder 661 disposed on one side of the transmission component. The telescopic rod of the cylinder 661 is connected to a pushing member 662. A bearing is sleeved outside the pushing member, and the bearing is rotatably connected to a bearing seat 663 disposed on one side of the transmission component 61 at the same time. Among them, the pushing member 662 has a cylindrical shaft portion, and a pushing plate and a connecting plate are respectively disposed at both ends of the shaft portion. The connecting plate is connected to the telescopic rod of the cylinder 661 through a connecting rod (the connecting rod is not shown). A bearing is sleeved outside the shaft portion. The pushing plate is located on the transmission component 61. By the telescopic rod of the cylinder 661 extending, the shaft portion is driven to rotate, so that the pushing plate rotates and pushes the unqualified retainers into the retainer recycling bin 65.

[0031] The blanking mechanism 8 includes a blanking conveying frame 81, and a pneumatic gripper is slidably disposed on the blanking conveying frame 81. In this embodiment, both the loading conveying frame 38 and the blanking conveying frame 81 include a bracket. A linear reciprocating mechanism I is disposed transversely on the bracket. A linear reciprocating mechanism II is disposed longitudinally on the slider of the linear reciprocating mechanism I. A pneumatic gripper is disposed on the slider of the linear reciprocating mechanism II, so as to realize that the pneumatic gripper can move along the X-axis and the Z-axis directions. The linear reciprocating mechanism I and the linear reciprocating mechanism II can adopt a lead screw assembly driven by a motor, or other mechanisms capable of realizing linear reciprocating motion.

[0032] The above embodiments are only used to illustrate the technical concept and features of the present invention. The purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it, and it cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. An automatic assembly machine for a planar needle roller bearing, comprising a base (1) and a multi-station turntable (2) disposed on the base (1) and driven by a driving mechanism. On the base (1) outside the multi-station turntable (2), there are successively arranged a first automatic feeding mechanism (3) for loading a seat ring (332), a first installation mechanism (4) for installing a retainer on the seat ring (332), a first automatic feeding mechanism (3) for loading a shaft ring, a second installation mechanism (7) for installing the shaft ring on the seat ring (332), and a blanking mechanism (8). On one side of the first installation mechanism, there is a second automatic feeding mechanism (6) for loading a retainer; The first automatic feeding mechanism (3) includes a loading assembly (31), a first feeding conveyor frame (32), and a plurality of carrier jigs (33); The plurality of carrier jigs (33) are placed in a ring shape and are all driven to rotate at the bottom by a motor. On each carrier jig (33), there are placed a seat ring substrate (331) and a plurality of seat rings (332). The plurality of seat rings (332) are all located above the seat ring substrate (331); A push plate (34) is slidably arranged on the loading assembly (31). The push plate (34) is located below the seat ring substrate (331) and can contact it. And the push plate (34) is driven by a servo motor to push the seat ring substrate (331) to move upward; One end of the first feeding conveyor frame (32) is located above one of the carrier jigs (33). A first pneumatic gripper (321) is slidably arranged on the first feeding conveyor frame (32). When the first pneumatic gripper (321) slides to the end of the first feeding conveyor frame (32) located above the carrier jig (33), the first pneumatic gripper (321) can engage with the seat ring (91) at the top of the carrier jig (33) and drive it to move; The first installation mechanism (4) includes a retainer press-fitting assembly. The retainer press-fitting assembly includes a first press-fitting fixed seat (41), a first press-fitting guide rail (42), a first press-fitting slider (43), a first press-fitting block (44), and a press-fitting device driving cylinder. The first press-fitting guide rail (42) is fixedly arranged on the first press-fitting fixed seat (41), and the first press-fitting guide rail (42) is perpendicular to the horizontal plane. The press-fitting block (44) is slidably arranged on the first press-fitting guide rail (42) through the first press-fitting slider (43). The telescopic shaft of the press-fitting device driving cylinder is connected to the first press-fitting slider (43); The second installation mechanism (7) includes a shaft ring press-fitting assembly. The shaft ring press-fitting assembly includes a second press-fitting fixed seat (71), a second press-fitting guide rail (72), a second press-fitting slider (73), a second press-fitting block (74), and a press-fitting device driving cylinder. The second press-fitting guide rail (72) is fixedly arranged on the second press-fitting fixed seat (71), and the second press-fitting guide rail (72) is perpendicular to the horizontal plane. The second press-fitting block (74) is slidably arranged on the second press-fitting guide rail (72) through the second press-fitting slider (73). The telescopic shaft of the press-fitting device driving cylinder is connected to the second press-fitting slider (73); The second automatic feeding mechanism (6) includes a transmission component (61) arranged on one side of the base (1) and extending above the base (1). A concave platform (62) for placing a retainer is provided on the base (1) at the output end of the transmission component (61). A rotary cylinder (63) is provided between the concave platform (62) and the transmission component (61). A clamping jaw (64) capable of grasping the retainer from the transmission component (61) and placing it on the concave platform (62) is provided on the rotary cylinder (63). A second feeding conveyor (38) is provided on one side of the concave platform (62). A second pneumatic clamping jaw (381) is slidably arranged on the second feeding conveyor (38). When the second pneumatic clamping jaw (381) slides to one end of the second feeding conveyor (38) located above the concave platform (62), the second pneumatic clamping jaw (381) can be engaged with the retainer on the concave platform (62) and move it away. The blanking mechanism (8) includes a blanking conveyor (81). A third pneumatic clamping jaw is slidably arranged on the blanking conveyor (81).

2. The automatic assembly machine for a flat needle roller bearing according to claim 1, wherein: The first pressing block (44) includes a guiding block (443), a pressing block (444) and a pressing head block (445). A convex platform channel and a platform channel that penetrate up and down are arranged in the guiding block (443). The pressing head block (445) is arranged in the platform channel and can slide up and down along the platform channel. Two strip holes (446) are arranged on the pressing block (444). The length direction of the strip holes (446) intersects with the vertical line to form a certain acute angle. Two circular holes that penetrate through the front and back are arranged on the guiding block (443). The circular holes are all communicated with the convex platform channel. A metal rod is installed in each circular hole, and the metal rod passes through the corresponding strip hole (446). The width of the convex platform channel is greater than the width of the pressing block (444). The pressing block (444) slides up and down in the convex platform channel and can move horizontally.

3. The automatic assembling machine for planar needle roller bearings according to claim 1, characterized in that: It further includes a retainer pre-assembly component (5). The retainer pre-assembly component includes a pre-assembly device driving cylinder, a pre-assembly fixing seat (51), a pre-assembly guide rail (52), and a pre-assembly block (53). The pre-assembly fixing seat (51) is fixedly arranged on the base (1). The pre-assembly guide rail (52) is fixedly arranged on the pre-assembly fixing seat (51). The telescopic shaft of the pre-assembly device driving cylinder is connected to a pre-assembly slider (54). The pre-assembly block (53) is slidably arranged on the pre-assembly guide rail (52) through the pre-assembly slider (54), and the pre-assembly block (53) can slide to the upper surface of the seat ring fixing block (55).

4. The automatic assembly machine for a flat needle roller bearing according to claim 1, characterized in that: Retainer recycling bins (65) for collecting waste retainers are respectively arranged on both sides of the transmission component (61). A retainer pushing component (66) for pushing the waste retainers into the interior of the retainer recycling bins is provided. The retainer pushing component (66) includes a cylinder (661) arranged on one side of the transmission component. The telescopic rod of the cylinder (661) is connected to a pushing member (662). A bearing is sleeved outside the pushing member, and the bearing is simultaneously rotatably connected to a bearing seat (663) arranged on one side of the transmission component (61).

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