An automobile steering gear screw rod, nut assembly and steel ball assembling device

Abstract

The present application relates to a kind of automobile steering gear screw rod, nut assembly and steel ball assembly device, belong to automobile steering gear assembly equipment technical field.The automobile steering gear screw rod, nut assembly and steel ball assembly device, including rack, screw positioning assembly, screw driving assembly, steel ball material guiding assembly, nut assembly positioning assembly, storage assembly and material rotating assembly;The rack upper end is equipped with storage assembly;The rack below storage assembly is equipped with steel ball material guiding assembly;Steel ball material guiding assembly and the rack of storage assembly side is equipped with material rotating assembly;The rack below steel ball material guiding assembly is equipped with two groups of nut assembly positioning assembly;The rack below nut assembly positioning assembly is equipped with screw driving assembly.The automobile steering gear screw rod, nut assembly and steel ball assembly device, solve the problem of low efficiency of existing installation mode, especially suitable for the needs of automobile steering gear installation.

Description

Technical Field

[0001] This invention relates to an assembly device for a car steering gear lead screw, nut assembly and steel ball, belonging to the technical field of car steering gear assembly equipment. Background Technology

[0002] In the field of automotive steering gear assembly technology, four sets of steel balls are installed between the nut assembly and the lead screw. Currently, the existing installation method involves manual assembly, which suffers from low installation efficiency. Therefore, it is necessary to develop an assembly device that can mechanize the assembly of the lead screw, nut assembly, and steel balls to solve the above-mentioned problems of the existing installation method. Summary of the Invention

[0003] The purpose of this invention is to provide an assembly device for automotive steering system lead screws, nut assemblies, and steel balls that is compact in structure and ingeniously designed, thereby solving the problem of low installation efficiency in existing installation methods for lead screws, nut assemblies, and steel balls.

[0004] The technical solution of this invention is: An assembly device for automotive steering gear lead screw, nut assembly, and steel ball includes a frame, a lead screw positioning assembly, a lead screw drive assembly, a steel ball guiding assembly, a nut assembly positioning assembly, a storage assembly, and a transfer assembly. The device is characterized in that: a storage assembly is mounted on the upper end of the frame; a steel ball guiding assembly is mounted on the frame below the storage assembly; a transfer assembly is mounted on the frame to one side of the steel ball guiding assembly and the storage assembly; two sets of nut assembly positioning assemblies are mounted on the frame below the steel ball guiding assembly; a lead screw drive assembly is mounted on the frame below the nut assembly positioning assembly; and a lead screw positioning assembly is mounted on the frame to one side of the upper end of the lead screw drive assembly.

[0005] The material storage assembly includes a storage box, a guide hose, a discharge sleeve, a sealing block, a transverse slide, a guide plate, a push cylinder, and a reversing cylinder. Multiple storage boxes are spaced apart on the upper end of the frame. Multiple discharge sleeves are spaced apart on the frame side of the storage boxes. The upper end of each discharge sleeve is connected to a corresponding storage box via a guide hose. A sealing block is mounted on the lower end of each discharge sleeve via a cylinder. The sealing block intermittently seals against the discharge sleeve port. A transverse slide is slidably mounted on the frame below the discharge sleeve via a screw mechanism and guide rails. A guide plate is mounted on the transverse slide via a reversing cylinder and a push cylinder. Two sets of guide holes are provided within the guide plate. A guide ramp is mounted inside the storage box via a lifting cylinder.

[0006] The material transfer assembly includes a cross truss, a material transfer storage plate, a displacement probe, and a sealing plate. An assembly plate and a material transfer storage plate are mounted on the frame via the cross truss. A sealing plate is mounted on the assembly plate below the material transfer storage plate via a material transfer cylinder. The sealing plate is slidably and sealingly connected to the lower end of the material transfer storage plate. A displacement probe is mounted above the material transfer storage plate via a detection cylinder and a displacement sensor. Four sets of material transfer sliding holes are spaced apart on the material transfer storage plate.

[0007] The steel ball guiding assembly includes a guiding box, guiding rods, extrusion rods, and a transverse slide. The transverse slide is mounted on the frame via a guide rail and screw mechanism. A lifting slide is mounted on the transverse slide via a control screw. The guiding box is slidably mounted on the lifting slide via a transverse push-pull cylinder and guide rail. Two sets of extrusion rods are mounted on the lifting slide above the guiding box via a vertical slide and drive cylinder. A guiding rod is fixedly mounted on the lifting slide below the guiding box. Two sets of material separating slide plates are slidably mounted below the guiding box. A slide plate gripper is mounted on one side of the guiding box via a material distribution cylinder.

[0008] The guide rod is provided with two sets of steel ball guide holes; the guide box is provided with four sets of guide sliding holes.

[0009] The nut assembly positioning component includes a rotating seat, a drive gear, a support seat, and a clamping block; the rotating seat is mounted on the frame via a mounting bracket and bearings; a drive gear is mounted on a mounting bracket on one side of the rotating seat via a motor; the drive gear meshes with a driven gear mounted on one side of the rotating seat; a support seat is fixedly mounted on the rotating seat; a clamping block is slidably mounted on the support seat via a slide rail; a clamping cylinder is mounted at the bottom of the rotating seat; the clamping cylinder is connected to the clamping block; and a clearance fork is provided on the rotating seat.

[0010] The lead screw drive assembly includes a rotary clamping seat, a drive motor, a transmission belt, a main lifting seat, and a secondary lifting seat; the main lifting seat is mounted on the frame via a lead screw mechanism; the secondary lifting seat is mounted on the main lifting seat via a lead screw mechanism; and the rotary clamping seat is mounted on the secondary lifting seat via a drive motor and a transmission belt.

[0011] The lead screw positioning assembly includes a locking claw, a locking roller, a locking cylinder, a positioning cylinder, and a positioning block; the locking claw is mounted on the frame via the locking cylinder; multiple sets of locking rollers are symmetrically mounted on the lower end of the locking claw; a positioning cylinder is mounted on the frame below the locking claw; a positioning block is mounted on the end of the positioning cylinder via a buffer spring and a displacement sensor; the end of the positioning block is provided with a threaded groove.

[0012] The advantages of this invention are: This assembly device for automotive steering gear lead screw, nut assembly and steel ball is compact and ingeniously designed. It can mechanize the assembly of lead screw, nut assembly and steel ball, thus solving the problem of low installation efficiency in existing installation methods. It is particularly suitable for the needs of automotive steering gear installation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the main structure of the present invention; Figure 3 This is a schematic diagram of the isometric structure of the present invention; Figure 4 This is a schematic diagram of the left-side structure of the present invention; Figure 5 This is a top view of the structure of the present invention; Figure 6 This is a schematic diagram of the structure of the lead screw positioning assembly and the lead screw driving assembly of the present invention; Figure 7 for Figure 6 Front view structural diagram; Figure 8 for Figure 6 A magnified structural diagram at point B; Figure 9 This is a schematic diagram of the lead screw positioning assembly of the present invention; Figure 10 for Figure 9 Enlarged structural diagram at point C; Figure 11 This is a schematic diagram of the structure of the lead screw drive assembly of the present invention; Figure 12 This is a schematic diagram of the steel ball guiding assembly and the nut assembly positioning assembly of the present invention; Figure 13 This is a schematic diagram of the nut assembly positioning component of the present invention; Figure 14 for Figure 12 Another structural diagram from a different angle; Figure 15 for Figure 12 Another structural diagram from a different angle; Figure 16 This is a schematic diagram of the steel ball guiding assembly of the present invention; Figure 17 for Figure 16 Enlarged structural diagram at point D; Figure 18 This is a schematic diagram of the material guide box and material guide rod of the present invention; Figure 19 This is a schematic diagram of the structure of the material storage assembly of the present invention; Figure 20 This is a schematic diagram of the structure of the material storage assembly of the present invention; Figure 21 for Figure 20 Enlarged structural diagram at point F; Figure 22 This is a schematic diagram of the material transfer assembly of the present invention; Figure 23 for Figure 22 Enlarged structural diagram at point E; Figure 24 for Figure 1 Enlarged structural diagram at point A; Figure 25 This is a schematic diagram of the structure of the material transfer assembly and the steel ball guiding assembly of the present invention. Figure 26 for Figure 25 Front view structural diagram; Figure 27 for Figure 25 A magnified structural diagram of point G in the middle.

[0014] In the diagram: 1. Frame; 2. Material storage assembly; 3. Steel ball guide assembly; 4. Transfer assembly; 5. Nut assembly positioning assembly; 6. Lead screw drive assembly; 7. Lead screw positioning assembly; 8. Material storage box; 9. Discharge sleeve; 10. Guide hose; 11. Sealing block; 12. Lead screw mechanism; 13. Lateral slide; 14. Reversing cylinder; 15. Pushing cylinder; 16. Guide plate; 17. Guide slide hole; 18. Cross truss; 19. Assembly plate; 20. Transfer storage plate; 21. Transfer cylinder; 22. Sealing plate; 23. Detection cylinder; 24. Displacement sensor; 25. Displacement probe; 26. Transfer slide hole; 27. Lateral slide; 28. Lifting slide; 29. ​​Lateral push-pull cylinder 30. Guide box; 31. Vertical slide; 32. Drive cylinder; 33. Extrusion rod; 34. Guide rod; 35. Material separating slide plate; 36. Material distributing cylinder; 37. Slide plate gripper; 38. Steel ball guide hole; 39. Guide slide hole; 40. Mounting bracket; 41. Rotary seat; 42. Drive gear; 43. Driven gear; 44. Support seat; 45. Clamping block; 46. Clamping cylinder; 47. Clearance fork; 48. Main lifting seat; 49. Auxiliary lifting seat; 50. Drive motor; 51. Transmission belt; 52. Rotary clamping seat; 53. Locking cylinder; 54. Locking claw; 55. Locking roller; 56. Positioning cylinder; 57. Buffer spring; 58. Positioning block; 59. Threaded groove. Detailed Implementation

[0015] The assembly device for assembling the steering screw, nut assembly, and steel ball of this automobile includes a frame 1, a screw positioning assembly 7, a screw drive assembly 6, a steel ball guiding assembly 3, a nut assembly positioning assembly 5, a storage assembly 2, and a transfer assembly 4 (see the attached instruction manual). Figure 1 , 2and 3).

[0016] The upper part of frame 1 is equipped with material storage assembly 2 (see instruction manual). Figure 1 , 2 (and 3). The material storage assembly 2 includes a material storage box 8, a guide hose 10, a discharge sleeve 9, a sealing block 11, a transverse slide 13, a guide plate 16, a push cylinder 15, and a reversing cylinder 14 (see the attached instruction manual). Figure 19 , 20 and 21).

[0017] Multiple storage boxes 8 are installed at intervals on the upper end of the frame 1; the storage boxes 8 contain steel balls of the same type, but the specifications of the steel balls in each storage box 8 are different.

[0018] Multiple feeding sleeves 9 are installed at intervals on the frame 1 on one side of the storage box 8; the upper end of the feeding sleeve 9 is connected to the corresponding storage box 8 through a guide hose 10 (see the instruction manual appendix). Figure 19 and 20 The storage box 8 is equipped with a guide ramp (not shown in the attached diagram of the instruction manual) via a lifting cylinder. During operation, the guide ramp is lifted by the lifting cylinder, and the steel balls in the storage box 8 can enter the discharge sleeve 9 through the guide hose 10.

[0019] The lower end of the feeding sleeve 9 is equipped with a sealing block 11 via a cylinder; the sealing block 11 is intermittently sealed to the port of the feeding sleeve 9 (see the instruction manual appendix). Figure 21 When the sealing block 11 contacts the port of the feeding sleeve 9 under the action of the cylinder, it can seal the bottom end of the feeding sleeve 9. When the sealing block 11 disengages from the port of the feeding sleeve 9, the steel ball inside the feeding sleeve 9 will be discharged outward under the action of gravity.

[0020] A transverse slide block 13 is slidably mounted on the frame 1 below the feeding sleeve 9 via a screw mechanism 12 and a guide rail; a guide plate 16 is mounted on the transverse slide block 13 via a reversing cylinder 14 and a pushing cylinder 15; two sets of guide sliding holes 17 are provided in the guide plate 16 (see the instruction manual appendix). Figure 19 , 20 (and 21). During operation, with the cooperation of the transverse slide 13, the reversing cylinder 14 and the pushing cylinder 15, the guide plate 16 can contact the corresponding feeding sleeve 9, so that the steel ball in the feeding sleeve 9 will fall into the guide sliding hole 17 of the guide plate 16 under the action of gravity.

[0021] The steel ball guide assembly 3 is mounted on the frame 1 below the storage assembly 2 (see the instruction manual appendix). Figure 1 , 2 And 3). The steel ball guiding assembly 3 includes a guide box 30, a guide rod 34, an extrusion rod 33, and a transverse slide 27 (see the instruction manual appendix). Figure 16 , 17 and 18).

[0022] A transverse slide 27 is mounted on the frame 1 via a guide rail and a lead screw mechanism 12; a lifting slide 28 is mounted on the transverse slide 27 via a control lead screw; a guide box 30 is slidably mounted on the lifting slide 28 via a transverse push-pull cylinder 29 and a guide rail. The guide box 30 can slide back and forth under the action of the transverse push-pull cylinder 29.

[0023] Two sets of extrusion rods 33 are mounted on the lifting slide 28 above the guide box 30 via a vertical slide 31 and a drive cylinder 32. The extrusion rods 33 can slide up and down under the guidance of the vertical slide 31.

[0024] A guide rod 34 is fixedly mounted on the lifting slide 28 below the guide box 30; two sets of material separating slide plates 35 are slidably mounted below the guide box 30; a slide plate gripper 37 is mounted on one side of the guide box 30 via the material distribution cylinder 36 (see instruction manual appendix). Figure 17 With the cooperation of the material distribution cylinder 36, the sliding plate gripper 37 can pull the corresponding material separating slide plate 35, thereby achieving the purpose of sealing or opening the guide slide hole 39 in the guide box 30.

[0025] The guide rod 34 is provided with two sets of steel ball guide holes 38; the guide box 30 is provided with four sets of guide sliding holes 39 (see the instruction manual appendix). Figure 18 When the guide hole 39 on the guide box 30 is connected to the steel ball guide hole 38 on the guide rod 34, the steel ball in the guide hole 39 will enter the steel ball guide hole 38 under the action of gravity.

[0026] A transfer assembly 4 is mounted on the frame 1 on one side of the steel ball guiding assembly 3 and the storage assembly 2 (see the instruction manual appendix). Figure 1 , 2 And 3). The transfer assembly 4 includes a cross truss 18, a transfer storage plate 20, a displacement probe 25, and a sealing plate 22 (see the attached instruction manual). Figure 22 ).

[0027] An assembly plate 19 and a transfer storage plate 20 are mounted on the frame 1 via a cross truss 18. A sealing plate 22 is mounted on the assembly plate 19 below the transfer storage plate 20 via a transfer cylinder 21. The sealing plate 22 is slidably and sealingly connected to the lower end of the transfer storage plate 20. Four sets of transfer sliding holes 26 are spaced apart on the transfer storage plate 20 (see the attached instruction manual). Figure 23 ).

[0028] When the transfer storage plate 20 corresponds to the guide plate 16 on the storage assembly 2, the steel balls in the guide plate 16 can fall into the transfer sliding hole 26 of the transfer storage plate 20. When the transfer storage plate 20 corresponds to the guide box 30 on the steel ball guide assembly 3, the steel balls in the transfer storage plate 20 will fall into the steel ball guide assembly 3.

[0029] A displacement probe 25 is mounted above the transfer storage plate 20 via a detection cylinder 23 and a displacement sensor 24. During operation, when the cross truss 18 moves the transfer storage plate 20 to below the displacement probe 25, the displacement probe 25 inserts into the transfer sliding hole 26 of the transfer storage plate 20, and the displacement sensor 24 can detect whether the number of steel balls stored inside the transfer sliding hole 26 meets the requirements.

[0030] Two sets of nut assembly positioning assemblies 5 are mounted on the frame 1 below the steel ball guiding assembly 3 (see the instruction manual appendix). Figure 1 , 2 (and 3). The nut assembly positioning component 5 includes a rotating seat 41, a drive gear 42, a support seat 44, and a clamping block 45 (see the instruction manual appendix). Figure 13 and 14 ).

[0031] A rotating seat 41 is mounted on the frame 1 via a mounting bracket 40 and bearings; a drive gear 42 is mounted on the mounting bracket 40 on one side of the rotating seat 41 via a motor; the drive gear 42 meshes with a driven gear 43 mounted on one side of the rotating seat 41 (see the instruction manual appendix). Figure 13 With the cooperation of the driving gear 42 and the driven gear 43, the driving gear 42 can drive the rotating seat 41 to rotate at a certain angle.

[0032] A support base 44 is fixedly mounted on the rotating base 41; a clamping block 45 is slidably mounted on the support base 44 via a slide rail; a clamping cylinder 46 is mounted on the bottom of the rotating base 41 (see the instruction manual appendix). Figure 14 The clamping cylinder 46 is connected to the clamping block 45; the operation is that under the action of the clamping cylinder 46, the clamping block 45 can press and fix the workpiece (nut assembly) onto the support base 44 (see the instruction manual appendix). Figure 13 ).

[0033] The swivel base 41 is provided with a clearance fork 47 (see the instruction manual). Figure 13 During operation, the workpiece (lead screw) can pass through the clearance fork 47 and then be inserted into the workpiece (nut assembly) (see instruction manual appendix). Figure 1 ).

[0034] The lead screw drive assembly 6 is mounted on the frame 1 below the nut assembly positioning component 5 (see the instruction manual appendix). Figure 1 , 2 (and 3). The lead screw drive assembly 6 includes a rotary clamping seat 52, a drive motor 50, a transmission belt 51, a main lifting seat 48, and an auxiliary lifting seat 49 (see the attached instruction manual). Figure 11 ).

[0035] The main lifting seat 48 is mounted on the frame 1 via a lead screw mechanism 12; the auxiliary lifting seat 49 is mounted on the main lifting seat 48 via a lead screw mechanism; the rotary clamping seat 52 is mounted on the auxiliary lifting seat 49 via a drive motor 50 and a transmission belt 51 (see the instruction manual appendix). Figure 11 The rotary clamping seat 52 is an externally purchased device. During operation, it can clamp and fix the lower end of the workpiece (lead screw) through its internal grippers. Subsequently, the drive motor 50 and the transmission belt 51 can drive the rotary clamping seat 52 to rotate automatically, and the main lifting seat 48 and the auxiliary lifting seat 49 can drive the rotary clamping seat 52 to move up and down.

[0036] The lead screw drive assembly 6 is mounted on the upper side of the frame 1, where the lead screw positioning assembly 7 is located (see the instruction manual appendix). Figure 1 , 2 (and 3). The lead screw positioning assembly 7 includes a locking pawl 54, a locking roller 55, a locking cylinder 53, a positioning cylinder 56, and a positioning block 58 (see the attached instruction manual). Figure 8 and 9 ).

[0037] A locking claw 54 is mounted on the frame 1 via a locking cylinder 53; multiple sets of locking rollers 55 are symmetrically mounted on the lower end of the locking claw 54; a positioning cylinder 56 is mounted on the frame 1 below the locking claw 54; a positioning block 58 is mounted on the end of the positioning cylinder 56 via a buffer spring 57 and a displacement sensor 24; the end of the positioning block 58 is provided with a threaded groove 59 (see the attached instruction manual). Figure 9 and 10 ).

[0038] During operation, the locking claw 54 clamps the upper end of the workpiece (lead screw) via the locking roller 55. Under the corrective action of the locking roller 55, the workpiece (lead screw) can move up and down and rotate freely without deflection. During operation, when the positioning block 58 contacts the surface of the workpiece (lead screw) under the action of the buffer spring 57, and when the threaded groove 59 engages with the threaded groove on the workpiece (lead screw), it indicates that the workpiece (lead screw) is at the zero point position. At this time, the displacement sensor 24 can detect the zero point position through displacement changes.

[0039] The assembly device for the steering gear lead screw, nut assembly, and steel ball operates as follows: First, one end of the workpiece (lead screw) to be installed is inserted into the rotating clamping seat 52, which clamps and fixes the lower end of the workpiece (lead screw). Then, the locking pawl 54 in the lead screw positioning assembly 7, in cooperation with the locking cylinder 53, contacts the upper end of the workpiece (lead screw) via the locking roller 55 (see the attached instruction manual). Figure 6 and 8Then, the positioning cylinder 56 pushes the positioning block 58 to make it contact the surface of the buffer spring 57. At this time, the drive motor 50 and the transmission belt 51 drive the workpiece (lead screw) to rotate freely through the rotating clamping seat 52. At the same time, the auxiliary lifting seat 49 drives the rotating clamping seat 52 and the workpiece (lead screw) to move upward. If the displacement sensor 24 senses the change in the position of the positioning block 58 during this process, it means that the threaded groove 59 of the positioning block 58 is engaged with the threaded groove on the workpiece (lead screw). That is, at this time, the workpiece (lead screw) is at the zero point position. At this time, the workpiece (lead screw) stops moving, thus completing the workpiece (lead screw) loading work.

[0040] After the workpiece (lead screw) has completed the loading process, the workpiece (nut assembly) is placed on the support seat 44 of the corresponding nut assembly positioning component 5 above the workpiece (lead screw). Then, under the action of the clamping cylinder 46, the clamping block 45 can press and fix it on the support seat 44 (see the instruction manual appendix). Figure 13 This completes the loading of the workpiece (nut assembly).

[0041] After the workpiece (nut assembly) loading is completed, the transfer storage plate 20 in the transfer assembly 4 moves to below the corresponding steel ball unloading sleeve 9 under the action of the cross truss 18. Then, the guide plate 16 in the storage assembly 2 is inserted above the transfer storage plate 20 under the action of the screw mechanism 12, the push cylinder 15, and the reversing cylinder 14 (see the instruction manual appendix). Figure 1 and 25 Subsequently, the corresponding sealing block 11 disengages from the bottom end of the feeding sleeve 9, so that the steel balls in the storage box 8 will enter a set of transfer sliding holes 26 in the transfer storage plate 20 along the guide plate 16; when a set of transfer sliding holes 26 is full of the corresponding steel balls, the transfer assembly 4 and the guide plate 16 continuously repeat the above actions until all four sets of transfer sliding holes 26 in the transfer storage plate 20 are full of steel balls. Then the transfer assembly 4 drives the transfer storage plate 20 to reset, and the guide plate 16 resets.

[0042] After the transfer storage plate 20 is filled with steel balls, the cross truss 18 moves the transfer storage plate 20 to below the displacement probe 25. At this time, the displacement probe 25 is inserted into the transfer sliding hole 26 of the transfer storage plate 20. The displacement sensor 24 can then detect the height of the steel balls stored inside the transfer sliding hole 26. If the height meets the requirements, it means that the steel balls stored in the transfer storage plate 20 are qualified. If they are not qualified, the transfer assembly 4 will repeat the action and refill the steel balls with the help of the guide plate 16.

[0043] After the above work is completed, the transverse slide 27 of the steel ball guiding assembly 3 moves to the rightmost position. At this time, the transfer storage plate 20 in the transfer assembly 4 contacts the upper end of the guide box 30 in the steel ball guiding assembly 3 under the action of the cross truss 18 (see the instruction manual appendix). Figure 26 and 27At this time, the transfer cylinder 21 drives the sealing plate 22 to move, causing all the steel balls in the transfer storage plate 20 to fall into the guide box 30. Then, the transfer storage plate 20 resets, and the guide box 30 and guide rod 34 in the steel ball guiding assembly 3 move to correspond with the workpiece (nut assembly) on the nut assembly positioning assembly 5 (see the instruction manual appendix). Figure 15 At this time, the two sets of guide sliding holes 39 in the guide box 30 correspond to the two sets of steel ball guide holes 38 on the guide rod 34 (see the instruction manual appendix). Figure 18 ).

[0044] After the above actions are completed, the lower end of the steel ball guide assembly 3 drives the guide rod 34 to insert into the bottom end of the workpiece (nut assembly). Then, the main lifting seat 48 of the screw drive assembly 6 drives the workpiece (screw) to move, so that its top end contacts and connects with the bottom of the guide rod 34.

[0045] After the above work is completed, the rotating clamping seat 52 drives the workpiece (lead screw) to rotate. At the same time, the auxiliary lifting seat 49 and the lifting slide 28 of the steel ball guide assembly 3 cooperate to move the workpiece (lead screw) upward during its rotation. During this process, the material separating slide plate 35 at the bottom of the corresponding guide slide hole 39 in the guide box 30 can open the corresponding guide slide hole 39 in the guide box 30 with the cooperation of the slide plate claw 37 and the material distributing cylinder 36. This allows the steel balls in the two sets of corresponding guide slide holes 39 to fall into the steel ball guide hole 38 of the guide rod 34 under the action of gravity, and under the guidance of the steel ball guide hole 38, they enter between the rotating workpiece (lead screw) and the workpiece (nut assembly), thus completing the assembly of the two sets of steel balls.

[0046] After the workpiece (lead screw) moves to a certain position and completes the assembly of the two sets of steel balls, the drive rotary seat 41 in the nut assembly positioning component 5 rotates at a certain angle under the cooperation of the drive gear 42 and the driven gear 43. Then the workpiece (lead screw) and the guide rod 34 move down a certain distance.

[0047] After the above process is completed, the transverse push-pull cylinder 29 in the steel ball guiding assembly 3 pushes the guiding box 30 to move one station, so that the other two sets of guide sliding holes 39 in the guiding box 30 correspond to the two sets of steel ball guide holes 38 on the guiding rod 34. Subsequently, the workpiece (lead screw) moves upward while rotating. During this process, the material separating slide plate 35 at the bottom of the corresponding guide sliding hole 39 in the guiding box 30 can open the corresponding guide sliding hole 39 in the guiding box 30 with the cooperation of the slide plate gripper 37 and the material distributing cylinder 36, so that the steel ball falls into the steel ball guide hole 38 of the guiding rod 34, and enters between the rotating workpiece (lead screw) and the workpiece (nut assembly) under the guidance of the steel ball guide hole 38. Thus, the assembly of the remaining two sets of steel balls is completed. The steel ball assembly work is now complete.

[0048] After the assembly device for the steering gear lead screw, nut assembly and steel ball completes the assembly of the steel ball, the installed workpiece is removed, and the assembly device can then enter the next work cycle.

[0049] The purpose of this application in providing two sets of nut assembly positioning components 5 and lead screw drive components 6 is to enable the other set of nut assembly positioning components 5 and lead screw drive components 6 to perform feeding work while one set of nut assembly positioning components 5 and lead screw drive components 6 are working together, thereby improving assembly efficiency.

[0050] This assembly device for automotive steering gear lead screw, nut assembly and steel ball is compact and ingeniously designed. It can mechanize the assembly of lead screw, nut assembly and steel ball, thus solving the problem of low installation efficiency in existing installation methods. It is particularly suitable for the needs of automotive steering gear installation.

Claims

1. An assembly device for a car steering screw, nut assembly and steel ball, comprising a frame (1), a screw positioning assembly (7), a screw drive assembly (6), a steel ball guiding assembly (3), a nut assembly positioning assembly (5), a storage assembly (2) and a transfer assembly (4), characterized in that: The upper end of the frame (1) is equipped with a material storage assembly (2); the frame (1) below the material storage assembly (2) is equipped with a steel ball guiding assembly (3); the frame (1) on one side of the steel ball guiding assembly (3) and the material storage assembly (2) is equipped with a material transfer assembly (4); the frame (1) below the steel ball guiding assembly (3) is equipped with two sets of nut assembly positioning assemblies (5); the frame (1) below the nut assembly positioning assembly (5) is equipped with a screw drive assembly (6); the frame (1) on one side of the upper end of the screw drive assembly (6) is equipped with a screw positioning assembly (7). The steel ball guiding assembly (3) includes a guiding box (30), a guiding rod (34), an extrusion rod (33), and a transverse slide (27). The transverse slide (27) is mounted on the frame (1) via a guide rail and a screw mechanism (12). A lifting slide (28) is mounted on the transverse slide (27) via a control screw. The guiding box (30) is slidably mounted on the lifting slide (28) via a transverse push-pull cylinder (29) and a guide rail. Two sets of extrusion rods (33) are mounted on the lifting slide (28) above the guiding box (30) via a vertical slide (31) and a drive cylinder (32). A guiding rod (34) is fixedly mounted on the lifting slide (28) below the guiding box (30). Two sets of material separating slide plates (35) are slidably mounted below the guiding box (30). A slide plate gripper (37) is mounted on one side of the guiding box (30) via a material separating cylinder (36). The guide rod (34) is provided with two sets of steel ball guide holes (38); the guide box (30) is provided with four sets of guide sliding holes (39). The nut assembly positioning component (5) includes a rotating seat (41), a drive gear (42), a support seat (44), and a clamping block (45); the rotating seat (41) is mounted on the frame (1) via a mounting bracket (40) and bearings; the drive gear (42) is mounted on the mounting bracket (40) on one side of the rotating seat (41) via a motor; the drive gear (42) meshes with the driven gear (43) mounted on one side of the rotating seat (41); the support seat (44) is fixedly mounted on the rotating seat (41); the clamping block (45) is slidably mounted on the support seat (44) via a slide rail; a clamping cylinder (46) is mounted on the bottom of the rotating seat (41); the clamping cylinder (46) is connected to the clamping block (45); and a clearance fork (47) is provided on the rotating seat (41). The lead screw drive assembly (6) includes a rotary clamping seat (52), a drive motor (50), a transmission belt (51), a main lifting seat (48), and an auxiliary lifting seat (49); the main lifting seat (48) is mounted on the frame (1) via a lead screw mechanism (12); the auxiliary lifting seat (49) is mounted on the main lifting seat (48) via a lead screw mechanism; the rotary clamping seat (52) is mounted on the auxiliary lifting seat (49) via a drive motor (50) and a transmission belt (51); The lead screw positioning assembly (7) includes a locking claw (54), a locking roller (55), a locking cylinder (53), a positioning cylinder (56), and a positioning block (58); the locking claw (54) is mounted on the frame (1) via the locking cylinder (53); multiple sets of locking rollers (55) are symmetrically mounted on the lower end of the locking claw (54); the positioning cylinder (56) is mounted on the frame (1) below the locking claw (54); the positioning block (58) is mounted on the end of the positioning cylinder (56) via a buffer spring (57) and a displacement sensor (24); the end of the positioning block (58) is provided with a threaded groove (59).

2. The assembly device for an automotive steering gear lead screw, nut assembly, and steel ball according to claim 1, characterized in that: The storage assembly (2) includes a storage box (8), a guide hose (10), a discharge sleeve (9), a sealing block (11), a transverse slide (13), a guide plate (16), a push cylinder (15), and a reversing cylinder (14); multiple storage boxes (8) are spaced apart on the upper end of the frame (1); multiple discharge sleeves (9) are spaced apart on the frame (1) on one side of the storage box (8); the upper end of the discharge sleeve (9) is connected to the corresponding storage box (8) through the guide hose (10); the discharge sleeve (9) The lower end of the sleeve (9) is equipped with a sealing block (11) via a cylinder; the sealing block (11) is intermittently sealed to the port of the unloading sleeve (9); a transverse slide (13) is slidably mounted on the frame (1) below the unloading sleeve (9) via a screw mechanism (12) and a guide rail; a guide plate (16) is mounted on the transverse slide (13) via a reversing cylinder (14) and a pushing cylinder (15); two sets of guide sliding holes (17) are provided in the guide plate (16); a guide inclined plate is mounted in the storage box (8) via a lifting cylinder.

3. The assembly device for an automotive steering gear lead screw, nut assembly, and steel ball according to claim 1, characterized in that: The material transfer assembly (4) includes a cross truss (18), a material transfer storage plate (20), a displacement probe (25), and a sealing plate (22); the frame (1) is equipped with an assembly plate (19) and a material transfer storage plate (20) via the cross truss (18); the assembly plate (19) below the material transfer storage plate (20) is equipped with a sealing plate (22) via a material transfer cylinder (21); the sealing plate (22) is slidably and sealingly connected to the lower end of the material transfer storage plate (20); the material transfer storage plate (20) is equipped with a displacement probe (25) via a detection cylinder (23) and a displacement sensor (24); the material transfer storage plate (20) is equipped with four sets of material transfer sliding holes (26) spaced apart.

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