A press-fitting device for an automotive steering column assembly

Abstract

The present invention relates to a press-fitting device for an automotive column assembly, belonging to the technical field of automotive parts production equipment. The press-fitting device for the automotive column assembly includes a frame, a fork-type loader, a positioning ring, a gripper and a shaft-type loader; a lifting slide is installed on the frame through a guide rail and a press-fitting cylinder; pressing pins are installed on the lifting slide through symmetrically arranged clamping cylinders; a fork-type loader is installed on the frame on one side of the lifting slide; a rotating gear ring is movably installed on the frame below the lifting slide; a driving gear is installed on the frame on one side of the rotating gear ring through a driving motor; a positioning ring is fixedly installed on the frame at the center of the rotating gear ring. The press-fitting device for the automotive column assembly has a compact structure and ingenious design, solves the problems of low work efficiency and high labor intensity existing in the existing assembly method of the automotive column assembly, and is particularly suitable for the needs of the assembly of the automotive column assembly.

Description

Technical Field

[0001] The present invention relates to a pressing device for an automotive column assembly, belonging to the technical field of automotive parts production equipment. Background Art

[0002] In the technical field of automotive parts production equipment, an automotive column assembly includes a joint fork 1 and an intermediate shaft 2; during assembly, the joint fork 1 needs to be pressed onto the intermediate shaft 2 (see the attached drawings of the specification Figure 1 、 2 and 3). The existing pressing device, such as a processing tool for automotive joint forks disclosed in the utility model patent with the authorization publication number CN217703044U, can meet the use of pressing common joint forks. Currently, there is a new type of column assembly, on the circumferential surface of the lower end of the intermediate shaft, there is an exhaust groove 3; on the circumferential surface of the intermediate shaft 2 on both sides of the exhaust groove 3, there are spline grooves 4. During its assembly, it is necessary to ensure a certain phase angle between the joint fork 1 and the exhaust groove 4 of the intermediate shaft 2. Currently, for the assembly of this new type of column assembly, an auxiliary tool is used in combination with a traditional pressing device to complete the assembly, and there are the following problems:

[0003] First: It is necessary to manually complete the adjustment work of the intermediate shaft 2 with the cooperation of the auxiliary tool, and only after making it keep a qualified phase angle with the joint fork 1 can the pressing work be completed, resulting in the problem of low work efficiency.

[0004] Second: It is necessary to manually complete the feeding work of the intermediate shaft 2 and the joint fork, resulting in the problem of high labor intensity caused by the inability to mechanize the assembly work of the automotive column assembly.

[0005] Therefore, it is necessary to develop a new pressing device for an automotive column assembly to solve the above problems existing in the existing assembly method of automotive column assemblies. Summary of the Invention

[0006] The purpose of the present invention is to provide a pressing device for an automotive column assembly with a compact structure and ingenious design, which solves the problems of low work efficiency and high labor intensity existing in the existing assembly method of automotive column assemblies.

[0007] The technical solution of the present invention is:

[0008] A press-fitting device for an automotive column assembly, comprising a frame, a fork-shaped loader, a positioning ring, a gripper and a shaft-shaped loader; characterized in that: a lifting slide is mounted on the frame through a guide rail and a pressing cylinder; pressing pins are mounted on the lifting slide through symmetrically arranged clamping cylinders; a fork-shaped loader is mounted on the frame on one side of the lifting slide; a rotating gear ring is movably mounted on the frame below the lifting slide; a driving gear is mounted on the frame on one side of the rotating gear ring through a driving motor; the driving gear is meshed and connected with the rotating gear ring; the positioning ring is fixedly mounted on the frame at the center of the rotating gear ring; the gripper is mounted on the rotating gear ring; a shaft-shaped loader is mounted on the frame on one side of the rotating gear ring; a conveyor belt is mounted on the frame below the shaft-shaped loader.

[0009] The pressing pin has a "stepped" structure.

[0010] The fork-shaped loader includes a storage box, a pushing cylinder, a pushing shaft and a blanking flap; a storage cavity is arranged in the storage box; a blanking cavity is arranged at one side of the lower end of the storage cavity; the pushing shaft is mounted on the storage box on one side of the blanking cavity through the pushing cylinder; the blanking flap is mounted on the storage box below the storage cavity through a torsion spring; avoiding notches are arranged on the storage box on both sides of the storage cavity; the avoiding notches are arranged facing the pressing pin.

[0011] The storage cavity has a cylindrical structure.

[0012] Positioning teeth are arranged on the inner ring surface of the positioning ring; positioning spline teeth are arranged on the inner ring surfaces on both sides of the positioning teeth.

[0013] The shaft-shaped loader includes a storage bin, a clamping push plate and a pressing rod; the storage bin has a box-shaped structure with an open upper part; a guiding slide rod is slidably mounted on one side of the storage bin; one end of the guiding slide rod extends into the interior of the storage bin and is fixedly mounted with the clamping push plate; the other end of the guiding slide rod extends out of the storage bin and is fixedly mounted with an operating rod; a pressing spring is sleeved on the guiding slide rod on one side of the clamping push plate; a discharge port is arranged at the bottom of the end of the storage bin; the pressing rod is mounted on the storage bin above the end of the storage bin through a pressing cylinder; the pressing rod corresponds to the discharge port.

[0014] The gripper includes a rotating cylinder, a workpiece gripper, a lifting cylinder, an upper assembly plate, a lower assembly plate and a pressing spring; the upper end of the rotating gear ring is mounted with the upper assembly plate through a bracket and the lifting cylinder; the lower end of the upper assembly plate is movably mounted with the lower assembly plate through a limiting slide rod; the pressing spring is sleeved on the limiting slide rod; the lower end of the lower assembly plate is mounted with a jaw cylinder through the rotating cylinder; the workpiece gripper is mounted on the jaw cylinder.

[0015] The advantages of the present invention are as follows:

[0016] The press-fitting device for the automotive column assembly has a compact structure and ingenious design, and can mechanize the assembly work of the column assembly, thus solving the problems of low work efficiency and high labor intensity existing in the existing assembly methods of the automotive column assembly, and is particularly suitable for the needs of the assembly of the automotive column assembly. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of the automotive column assembly;

[0018] Figure 2 It is a front view structural schematic diagram of the automotive column assembly;

[0019] Figure 3 It is for Figure 2 the left view structural schematic diagram of;

[0020] Figure 4 It is for Figure 2 the A-A direction structural schematic diagram in;

[0021] Figure 5 It is a schematic structural diagram of the present invention;

[0022] Figure 6 It is for Figure 5 the right view structural schematic diagram after removing the fork type feeder;

[0023] Figure 7 It is a schematic structural diagram of the fork type feeder of the present invention;

[0024] Figure 8 It is for Figure 7 the C-C direction structural schematic diagram in;

[0025] Figure 9 It is for Figure 5 the B-B direction structural schematic diagram in;

[0026] Figure 10 It is a schematic structural diagram of the positioning ring of the present invention;

[0027] Figure 11 It is a schematic structural diagram of the gripper of the present invention;

[0028] Figure 12 It is a schematic structural diagram of the shaft type feeder of the present invention.

[0029] In the figure: 1. Joint fork; 2. Intermediate shaft; 3. Exhaust groove; 4. Spline groove; 5. Frame; 6. Pressing cylinder; 7. Lifting slide; 8. Clamping cylinder; 9. Pressing pin; 10. Fork-type loader; 11. Rotating gear ring; 12. Driving motor; 13. Driving gear; 14. Positioning ring; 15. Gripper; 16. Shaft-type loader; 17. Conveyor belt; 18. Storage box; 19. Storage cavity; 20. Discharging cavity; 21. Pushing cylinder; 22. Pushing shaft; 23. Discharging flap; 24. Avoidance notch; 25. Positioning cogs; 26. Positioning spline teeth; 27. Storage bin; 28. Guide slide bar; 29. Clamping push plate; 30. Pressing spring; 31. Discharge port; 32. Lower pressing cylinder; 33. Lower pressing rod; 34. Lifting cylinder; 35. Upper assembly plate; 36. Limit slide bar; 37. Lower assembly plate; 38. Lower pressing spring; 39. Rotating cylinder; 40. Jaw cylinder; 41. Workpiece jaw. Detailed implementation mode

[0030] The pressing device for the automotive column assembly includes a frame 5, a fork-type loader 10, a positioning ring 14, a gripper 15, and a shaft-type loader 16 (see the attached drawings of the specification Figure 5 ).

[0031] A lifting slide 7 is installed on the frame 5 through a guide rail and a pressing cylinder 6 (see the attached drawings of the specification Figure 5 and 6 ). When the pressing cylinder 6 works, it can drive the lifting slide 7 to slide up and down along the guide rail.

[0032] A pressing pin 9 is installed on the lifting slide 7 through symmetrically arranged clamping cylinders 8 (see the attached drawings of the specification Figure 6 ). The pressing pin 9 has a "stepped" structure (see the attached drawings of the specification Figure 6 ). The purpose of setting the clamping cylinder 8 and the pressing pin 9 in this way is that during work, the clamping cylinder 8 can squeeze the assembly hole on the joint fork 1 in a clamping manner through two groups of pressing pins 9 to fix it. In this way, when the lifting slide 7 moves down, the lifting slide 7 can drive the joint fork 1 to move down together through the clamping cylinder 8 and the pressing pin 9.

[0033] A fork-type loader 10 is installed on the frame 5 on one side of the lifting slide 7 (see the attached drawings of the specification Figure 5 ). The fork-type loader 10 includes a storage box 18, a pushing cylinder 21, a pushing shaft 22, and a discharging flap 23 (see the attached drawings of the specification Figure 7 ).

[0034] A storage cavity 19 is provided in the storage box 18; the storage cavity 19 has a cylindrical structure; its structure is consistent with the outer shape of the joint fork 1; limiting chute grooves (not shown in the drawings of the specification) are provided on both sides of the storage cavity 19. During work, the joint fork 1 can be placed inside the storage cavity 19 in a stacked manner in a unified posture under the guidance of the limiting chute grooves (see the attached drawings of the specificationFigure 7 ).

[0035] One side at the lower end of the material storage cavity 19 is provided with a blanking cavity 20 (see the appended drawings of the specification Figure 7 and 8 ). The internal space structure of the blanking cavity 20 is consistent with the external structure of the joint fork 1; on the storage box 18 on one side of the blanking cavity 20, a pushing shaft 22 is installed through a pushing cylinder 21 (see the appended drawings of the specification Figure 7 ). During operation, the pushing shaft 22 can smoothly push the joint fork 1 into the blanking cavity 20 by pushing the side of the joint fork 1, and keep it in a vertical state under the action of the blanking cavity 20 (see the appended drawings of the specification Figure 8 ).

[0036] On the storage box 18 below the material storage cavity 19, a blanking flap 23 is installed through a torsion spring (see the appended drawings of the specification Figure 7 and 8 ). Avoidance notches 24 are provided on the storage boxes 18 on both sides of the material storage cavity 19; the avoidance notches 24 are arranged facing the pressing pin 9 (see the appended drawings of the specification Figure 8 ). The purpose of such a setting is to enable the pressing pin 9 to pass through the avoidance notch 24 to clamp and fix the joint fork 1. Thus, when the lifting slide 7 moves downward, the joint fork 1 can be driven to move downward through the clamping cylinder 8 and the pressing pin 9. During the downward movement of the joint fork 1, the blanking flap 23 can be squeezed, and after it is opened, the joint fork 1 moves to its lower side. When the joint fork 1 moves to its lower side, the blanking flap 23 can reset under the action of the torsion spring force.

[0037] A rotating gear ring 11 is movably installed on the frame 5 below the lifting slide 7; on the frame 5 on one side of the rotating gear ring 11, a driving gear 13 is installed through a driving motor 12 (see the appended drawings of the specification Figure 5 and 9 ). The driving gear 13 is meshed and connected with the rotating gear ring 11.

[0038] When the driving motor 12 works, it can drive the rotating gear ring 11 to rotate freely through the driving gear 13. On the frame 5 at the center of the rotating gear ring 11, a positioning ring 14 is fixedly installed (see the appended drawings of the specification Figure 5 and 9 ).

[0039] On the inner ring surface of the positioning ring 14, positioning teeth 25 are provided; on the inner ring surfaces on both sides of the positioning teeth 25, positioning spline teeth 26 are provided (see the appended drawings of the specification Figure 10 ). The purpose of setting the positioning ring 14 like this is to enable that during operation, when the exhaust groove on the intermediate shaft 2 must correspond to the positioning teeth 25 on the positioning ring 14, the intermediate shaft 2 can be inserted into the inside of the positioning ring 14, and the spline groove 4 is clamped and connected with the positioning spline teeth 26.

[0040] The rotating gear ring 11 is equipped with a gripper 15 (see the attached instructions Figure 6 ). The gripper 15 includes a rotating cylinder 39, a workpiece jaw 41, a lifting cylinder 34, an upper mounting plate 35, a lower mounting plate 37, and a downward pressure spring 38 (see the attached instructions Figure 1 ).

[0041] The upper end of the rotating gear ring 11 is equipped with an upper mounting plate 35 through a bracket and a lifting cylinder 34; when the lifting cylinder 34 works, it can drive the upper mounting plate 35 to move up and down.

[0042] The lower end of the upper mounting plate 35 is movably equipped with a lower mounting plate 37 through a limit slide bar 36; a downward pressure spring 38 is sleeved on the limit slide bar 36; the lower end of the lower mounting plate 37 is equipped with a jaw cylinder 40 through a rotating cylinder 39; a workpiece jaw 41 is installed on the jaw cylinder 40. The purpose of setting the lower mounting plate 37 like this is: when the workpiece jaw 41 is subjected to an upward pressure during work, it will push the lower mounting plate 37 to move upward after overcoming the elastic force of the downward pressure spring 38. In this way, under the action of the elastic force of the downward pressure spring 38, the lower mounting plate 37 and the workpiece jaw 41 can always have a tendency to move downward.

[0043] An axial feeder 16 is installed on the frame 5 on one side of the rotating gear ring 11 (see the attached instructions Figure 6 ). The axial feeder 16 includes a storage bin 27, a clamping push plate 29, and a downward pressure rod 33 (see the attached instructions Figure 12 ).

[0044] The storage bin 27 has a box-shaped structure with an open upper part; the width of the storage bin 27 is the same as the diameter of the intermediate shaft 2, so that the intermediate shaft 2 can be inserted into the storage bin 27 vertically (see the attached instructions Figure 12 ).

[0045] A guiding slide bar 28 is slidably installed on one side of the storage bin 27; one end of the guiding slide bar 28 extends into the interior of the storage bin 27 and is fixedly equipped with a clamping push plate 29; the other end of the guiding slide bar 28 extends outside the storage bin 27 and is fixedly equipped with an operating rod; a compression spring 30 is sleeved on the guiding slide bar 28 on one side of the clamping push plate 29 (see the attached instructions Figure 12 ).

[0046] An outlet 31 is provided at the bottom of the end of the storage bin 27; a downward pressure rod 33 is installed above the end of the storage bin 27 through a downward pressure cylinder 32; the downward pressure rod 33 corresponds to the outlet 31 (see the attached instructions Figure 12 ).

[0047] The purpose of setting the material storage bin 27 in this way is that when working, after the operating rod is pulled to make the clamping push plate 29 overcome the elastic force of the compression spring 30 and move backward, multiple intermediate shafts 2 can be placed in parallel in a vertical manner in the material storage bin 27. When the operating rod is subsequently released, the clamping push plate 29 can clamp the intermediate shaft 2 under the push of the elastic force of the compression spring 30, and at this time, each intermediate shaft 2 will be parallel in the material storage bin 27 under the action of mutual driving force. At this time, when the pressing cylinder 32 presses down the corresponding intermediate shaft 2 through the pressing rod 33, the intermediate shaft 2 will move downward through the discharge port 31 after being pressed. During the downward movement of the intermediate shaft 2, since it will continue to be squeezed by the adjacent intermediate shaft 2, the intermediate shaft 2 will not fall out of the material storage bin 27 under the action of friction.

[0048] A conveyor belt 17 is mounted on the frame 5 below the shaft feeder 16 (see the attached manual). Figure 6 ).

[0049] When the press-fitting device of the automobile column assembly is working, the rotating cylinder 39 drives the clamping cylinder 40 to rotate so that the workpiece clamping jaw 41 is in an open state and is located below the discharge port 31 of the storage bin 27; then the pressing cylinder 32 presses down the corresponding intermediate shaft 2 through the pressing rod 33, so that it gradually passes through the discharge port 31 and moves downward. When the intermediate shaft 2 moves downward for a certain distance and the bare rod part of the intermediate shaft 2 is located inside the workpiece clamping jaw 41, the pressing rod 33 is reset, and at this time, the workpiece clamping jaw 41 clamps the intermediate shaft 2.

[0050] After the workpiece clamp 41 clamps the intermediate shaft 2, the lifting cylinder 34 of the clamp 15 drives the intermediate shaft 2 to move downward to the bottom of the storage bin 27 through the upper assembly plate 35, the lower assembly plate 37, the rotating cylinder 39 and the clamp cylinder 40. The rotating cylinder 39 will drive the intermediate shaft 2 to rotate to the top of the positioning ring 14 and contact it.

[0051] After the intermediate shaft 2 moves to the top of the positioning ring 14, the lifting cylinder 34 drives the intermediate shaft 2 to move downward through the upper assembly plate 35, the lower assembly plate 37, the rotating cylinder 39 and the clamping cylinder 40 until it contacts the positioning ring 14. The lifting cylinder 34 continues to move, so that the lower assembly plate 37 overcomes the elastic force of the downward pressure spring 38 and moves upward relative to the upper assembly plate 35 for a distance and then stops. In this process, the intermediate shaft 2 will maintain a relative position with the positioning ring 14 unchanged, and the intermediate shaft 2 has a tendency to press the positioning ring 14 downward under the elastic force of the downward pressure spring 38.

[0052] After the above actions are completed, the driving motor 12 drives the rotating gear ring 11 to rotate through the driving gear 13; during the rotation of the rotating gear ring 11, the intermediate shaft 2 will be driven to rotate through the clamp 15; during the rotation of the intermediate shaft 2, when the exhaust groove on the intermediate shaft 2 rotates to correspond to the positioning tooth 25 on the positioning ring 14, the intermediate shaft 2 will be inserted into the interior of the positioning ring 14 under the action of the elastic force of the downward pressure spring 38, so that the spline groove 4 is engaged with the positioning spline tooth 26.

[0053] When the intermediate shaft 2 is inserted into the interior of the positioning ring 14, the sensor at the bottom of the positioning ring 14 will transmit a signal to stop the rotating gear ring 11. Then the push shaft 22 on the fork feeder 10 can push the yoke 1 smoothly into the feeding cavity 20 by pushing the side of the yoke 1.

[0054] After the yoke 1 enters the material discharge chamber 20, the clamping cylinder 8 can drive the pressing pin 9 to pass through the avoidance notch 24 to clamp and fix the yoke 1. Then the press cylinder 6 will push the lifting slide 7 to move downward. When the lifting slide 7 moves downward, the yoke 1 can be driven downward by the clamping cylinder 8 and the pressing pin 9. During the downward movement of the yoke 1, the material discharge flap 23 can be squeezed to open, and the yoke 1 moves to the bottom of the material storage box 18. At this time, the material discharge flap 23 will be reset under the action of the torsion spring elastic force.

[0055] When the yoke 1 moves to the bottom of the storage box 18, the lifting slide 7 continues to move downward. During the downward movement of the lifting slide 7, the yoke 1 is driven downward and finally pressed onto the intermediate shaft 2, so that the assembly of the automobile column assembly can be completed. Then the pressing pin 9 releases the yoke 1, and the lifting slide 7 is reset.

[0056] After the lifting slide 7 is reset, the rotating gear ring 11 rotates and resets, and then the lifting cylinder 34 drives the intermediate shaft 2 to move up to make it disengage from the positioning ring 14, and then the rotating cylinder 39 drives the intermediate shaft 2 to rotate to the bottom of the storage bin 27, and then the workpiece clamp 41 releases the automobile column assembly, and at this time the automobile column assembly will fall onto the conveyor belt 17 under the action of gravity, and then the conveyor belt 17 will output the automobile column assembly. At this point, the press-fitting device of the automobile column assembly has completed the assembly work of the automobile column assembly, and the press-fitting device can enter the next working cycle.

[0057] The press-fitting device of the automobile column assembly has a compact structure and an ingenious design, and can mechanizedly complete the assembly of the column assembly, thereby solving the problems of low work efficiency and high labor intensity in the existing assembly method of the automobile column assembly, and is particularly suitable for the needs of automobile column assembly assembly.

Claims

1. A press-fitting device for an automotive steering column assembly, comprising a frame (5), a fork-type loader (10), a positioning ring (14), a gripper (15) and a shaft-type loader (16); characterized in that: A lifting slide table (7) is mounted on the described frame (5) through guide rails and a pressing cylinder (6); a pressing pin (9) is mounted on the lifting slide table (7) through symmetrically arranged clamping cylinders (8); a fork-type loader (10) is mounted on the frame (5) on one side of the lifting slide table (7); a rotating gear ring (11) is movably mounted on the frame (5) below the lifting slide table (7); a driving gear (13) is mounted on the frame (5) on one side of the rotating gear ring (11) through a driving motor (12); the driving gear (13) is meshed and connected with the rotating gear ring (11); a positioning ring (14) is fixedly mounted on the frame (5) below the center of the rotating gear ring (11); a gripper (15) is mounted on the rotating gear ring (11); a shaft-type loader (16) is mounted on the frame (5) on one side of the rotating gear ring (11); a conveyor belt (17) is mounted on the frame (5) below the shaft-type loader (16).

2. The press-fitting device for an automotive column assembly according to claim 1, characterized in that: The described pressing pin (9) has a "stepped" structure.

3. The press-fitting device for an automotive column assembly according to claim 1, characterized in that: The described fork-type loader (10) includes a storage box (18), a pushing cylinder (21), a pushing shaft (22), and a blanking flap (23); a storage cavity (19) is arranged in the storage box (18); a blanking cavity (20) is arranged at one side of the lower end of the storage cavity (19); a pushing shaft (22) is mounted on the storage box (18) on one side of the blanking cavity (20) through a pushing cylinder (21); a blanking flap (23) is mounted on the storage box (18) below the storage cavity (19) through a torsion spring; avoiding notches (24) are arranged on the storage box (18) on both sides of the storage cavity (19); the avoiding notches (24) are arranged facing the pressing pin (9).

4. The press-fitting device for an automotive column assembly according to claim 3, characterized in that: The described storage cavity (19) has a cylindrical structure.

5. The press-fitting device for an automotive column assembly according to claim 1, characterized in that: Positioning teeth (25) are arranged on the inner ring surface of the described positioning ring (14); positioning spline teeth (26) are arranged on the inner ring surfaces on both sides of the positioning teeth (25).

6. The press-fitting device for an automotive column assembly according to claim 1, characterized in that: The described shaft-type loader (16) includes a storage bin (27), a clamping push plate (29), and a pressing rod (33); the storage bin (27) has a box-type structure with an open upper part; a guiding slide rod (28) is slidably mounted on one side of the storage bin (27); one end of the guiding slide rod (28) extends into the interior of the storage bin (27) and is fixedly mounted with the clamping push plate (29); the other end of the guiding slide rod (28) extends outside the storage bin (27) and is fixedly mounted with an operating rod; a pressing spring (30) is sleeved on the guiding slide rod (28) on one side of the clamping push plate (29); a discharge port (31) is arranged at the bottom of the end of the storage bin (27); a pressing rod (33) is mounted on the storage bin (27) above the end through a pressing cylinder (32); the pressing rod (33) corresponds to the discharge port (31).

7. The press-fitting device for an automotive column assembly according to claim 1, characterized in that: The described gripper (15) includes a rotary cylinder (39), a workpiece jaw (41), a lifting cylinder (34), an upper mounting plate (35), a lower mounting plate (37), and a downward pressure spring (38); the upper end of the rotary gear ring (11) is provided with an upper mounting plate (35) through a bracket and a lifting cylinder (34); the lower end of the upper mounting plate (35) is movably provided with a lower mounting plate (37) through a limit slide bar (36); the limit slide bar (36) is sleeved with a downward pressure spring (38); the lower end of the lower mounting plate (37) is provided with a jaw cylinder (40) through a rotary cylinder (39); and a workpiece jaw (41) is mounted on the jaw cylinder (40).

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