Assembly device for screw rod, nut assembly and steel ball of automobile steering device

Abstract

The invention relates to an assembling device for a lead screw, a nut assembly and a steel ball of an automobile steering device, and belongs to the technical field of automobile steering device assembling equipment. The assembling device for the lead screw, the nut assembly and the steel ball of the automobile steering device comprises a rack, a lead screw positioning assembly, a lead screw driving assembly, a steel ball guiding assembly, a nut assembly positioning assembly, a storage assembly and a transferring assembly. A material storage assembly is arranged at the upper end of the rack; a steel ball guide assembly is mounted on the rack below the storage assembly; the material transferring assembly is arranged on the rack on one side of the steel ball guiding assembly and the material storing assembly; two groups of nut assembly positioning components are mounted on the rack below the steel ball guide component; and a lead screw driving component is arranged on the rack below the nut assembly positioning component. The assembly device for the screw rod, the nut assembly and the steel ball of the automobile steering device solves the problem of low installation efficiency of an existing installation mode, and is particularly suitable for the installation and use requirements of the automobile steering device.

Description

Technical Field

[0001] The invention relates to an assembly device for a screw rod, a nut assembly and a steel ball of an automobile steering gear, and belongs to the technical field of automobile steering gear assembly equipment. Background Art

[0002] In the field of automobile steering gear assembly technology, four sets of steel balls are installed between the nut assembly and the screw rod. The current existing installation method is to complete the assembly manually, which has the problem of low installation efficiency. Therefore, it is necessary to develop an assembly device that can mechanically complete the assembly of the screw rod, nut assembly and steel balls to solve the above problems of the existing installation method. Summary of the invention

[0003] The purpose of the present invention is to provide an assembly device for an automobile steering gear screw rod, nut assembly and steel ball with a compact structure and ingenious design to solve the problem of low installation efficiency of the existing installation method of the screw rod, nut assembly and steel ball.

[0004] The technical solution of the present invention is: An assembly device for a screw rod, a nut assembly and a steel ball of an automobile steering gear comprises a frame, a screw positioning assembly, a screw driving assembly, a steel ball guide assembly, a nut assembly positioning assembly, a material storage assembly and a material transfer assembly, and is characterized in that: a material storage assembly is mounted on the upper end of the frame; a steel ball guide assembly is mounted on the frame below the material storage assembly; a material transfer assembly is mounted on the frames on one side of the steel ball guide assembly and the material storage assembly; two groups of nut assembly positioning assemblies are mounted on the frame below the steel ball guide assembly; a screw driving assembly is mounted on the frame below the nut assembly positioning assembly; a screw positioning assembly is mounted on the frame on one side of the upper end of the screw driving assembly.

[0005] The material storage assembly includes a material storage box, a material guide hose, a material discharge sleeve, a sealing block, a transverse sliding seat, a material guide plate, a pushing cylinder and a reversing cylinder; a plurality of material storage boxes are installed at intervals on the upper end of the frame; a plurality of material discharge sleeves are installed at intervals on the frame on one side of the material storage box; the upper end of the material discharge sleeve is connected to the corresponding material storage box through a material guide hose; a sealing block is installed at the lower end of the material discharge sleeve through a cylinder; the sealing block is intermittently sealed and connected to the port of the material discharge sleeve; a transverse sliding seat is installed on the frame below the material discharge sleeve through a screw mechanism and a guide rail sliding; a material guide plate is installed on the transverse sliding seat through a reversing cylinder and a pushing cylinder; two groups of material guide sliding holes are arranged in the material guide plate. A guide inclined plate is installed in the material storage box through a lifting cylinder.

[0006] The material transfer assembly includes a cross truss, a material transfer storage plate, a displacement probe and a sealing plate; the frame is provided with an assembly plate and a material transfer storage plate through the cross truss; a sealing plate is provided on the assembly plate below the material transfer storage plate through a material transfer cylinder; the sealing plate is slidably and sealedly connected to the lower end of the material transfer storage plate; a displacement probe is provided above the material transfer storage plate through a detection cylinder and a displacement sensor. Four groups of material transfer sliding holes are provided at intervals on the material transfer storage plate.

[0007] The steel ball material guide assembly includes a material guide box, a material guide rod, an extrusion rod and a transverse slide; the frame is equipped with a transverse slide through a guide rail and a screw mechanism; the transverse slide is equipped with a lifting slide through a control screw; the material guide box is slidably mounted on the lifting slide through a transverse push-pull cylinder and a guide rail; two groups of extrusion rods are mounted on the lifting slide above the material guide box through a vertical slide and a driving cylinder; a material guide rod is fixedly mounted on the lifting slide below the material guide box; two groups of material partition slides are slidably mounted below the material guide box; a slide clamp is mounted on one side of the material guide box through a material dividing cylinder.

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

[0009] The nut assembly positioning component includes a rotating seat, a driving gear, a supporting seat and a clamping block; the rotating seat is installed on the frame through a mounting bracket and a bearing; a driving gear is installed on the mounting bracket on one side of the rotating seat through a motor; the driving gear is meshed and connected with a driven gear installed on one side of the rotating seat; a supporting seat is fixed on the rotating seat; a clamping block is slidably installed above the supporting seat through a slide rail; a clamping cylinder is installed at the bottom of the rotating seat; the clamping cylinder is connected to the clamping block; and an avoidance fork is provided on the rotating seat.

[0010] The screw drive assembly includes a rotating clamping seat, a driving motor, a transmission belt, a main lifting seat and a secondary lifting seat; the main lifting seat is installed on the frame through a screw mechanism; the secondary lifting seat is installed on the main lifting seat through a screw mechanism; and the rotating clamping seat is installed on the secondary lifting seat through a driving motor and a transmission belt.

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

[0012] The advantages of the present invention are: The assembly device of the screw rod, nut assembly and steel ball of the automobile steering gear has a compact structure and an ingenious design, and can mechanically complete the assembly work of the screw rod, nut assembly and steel ball to solve the problem of low installation efficiency in the existing installation method, and is particularly suitable for the needs of automobile steering gear installation and use. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0015] The assembly device of the automotive steering gear screw, nut assembly and steel ball comprises a frame 1, a screw positioning assembly 7, a screw driving assembly 6, a steel ball guide assembly 3, a nut assembly positioning assembly 5, a material storage assembly 2 and a material transfer assembly 4 (see the attached manual). Figure 1 , 2and 3).

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

[0017] A plurality of material storage boxes 8 are installed at intervals on the upper end of the frame 1; the material storage boxes 8 are filled with steel balls of the same type, and the specifications of the steel balls in the various material storage boxes 8 are different.

[0018] A plurality of material discharge sleeves 9 are installed at intervals on the frame 1 on one side of the material storage box 8; the upper end of the material discharge sleeve 9 is connected to the corresponding material storage box 8 through a material guide hose 10 (see the attached manual Fig.19 and 20 ). A guide ramp is installed in the material storage box 8 through a lifting cylinder (not shown in the drawings of the specification). During operation, the guide ramp is lifted by the lifting cylinder, and the steel balls in the material storage box 8 can enter the material discharge sleeve 9 through the material guide hose 10.

[0019] The lower end of the blanking sleeve 9 is provided with a sealing block 11 through a cylinder; the sealing block 11 is intermittently sealed and connected to the port of the blanking sleeve 9 (see the attached manual). Fig.21 ). When the sealing block 11 contacts the port of the blanking sleeve 9 driven by the cylinder, it can seal the bottom end of the blanking sleeve 9. When the sealing block 11 is out of contact with the port of the blanking sleeve 9, the steel balls inside the blanking sleeve 9 will be discharged outward under the action of gravity.

[0020] A transverse slide 13 is mounted on the frame 1 below the material unloading sleeve 9 through a screw mechanism 12 and a guide rail; a material guide plate 16 is mounted on the transverse slide 13 through a reversing cylinder 14 and a pushing cylinder 15; two sets of material guide sliding holes 17 are arranged in the material guide plate 16 (see the appendix of the manual). Fig.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 material discharge sleeve 9, so that the steel ball in the material discharge sleeve 9 will fall into the guide slide hole 17 of the guide plate 16 under the action of gravity.

[0021] The frame 1 below the material storage assembly 2 is equipped with a steel ball guide assembly 3 (see the attached manual). Figure 1 , 2 and 3). The steel ball guide assembly 3 includes a guide box 30, a guide rod 34, an extrusion rod 33 and a transverse slide 27 (see the attached manual). Fig.16 , 17 and 18).

[0022] The frame 1 is provided with a traverse slide 27 through a guide rail and a screw mechanism 12; the traverse slide 27 is provided with a lifting slide 28 through a control screw; the lifting slide 28 is provided with a material guide box 30 through a lateral push-pull cylinder 29 and a guide rail. The material guide box 30 can slide back and forth under the action of the lateral push-pull cylinder 29.

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

[0024] A material guide rod 34 is fixed on the lifting slide 28 below the material guide box 30; two sets of material separation slides 35 are slidably installed below the material guide box 30; a slide clamp 37 is installed on one side of the material guide box 30 through a material dividing cylinder 36 (see the attached manual). Fig.17 ). The slide plate clamping claw 37 can pull the corresponding material separation slide plate 35 in cooperation with the material distribution cylinder 36, so as to achieve the purpose of sealing or opening the guide slide hole 39 in the material 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 slide holes 39 (see the attached manual for details). Fig.18 ). When the guide sliding hole 39 on the material guide box 30 is connected to the steel ball guide hole 38 on the material guide rod 34, the steel ball in the guide sliding hole 39 will enter the steel ball guide hole 38 under the action of gravity.

[0026] The frame 1 on one side of the steel ball guide assembly 3 and the storage assembly 2 is equipped with a material transfer assembly 4 (see the attached manual). Figure 1 , 2 and 3). 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 (see the attached manual). Fig. 22 ).

[0027] The frame 1 is provided with an assembly plate 19 and a material transfer storage plate 20 through a cross truss 18; a sealing plate 22 is provided on the assembly plate 19 below the material transfer storage plate 20 through a material transfer cylinder 21; the sealing plate 22 is slidably and hermetically connected to the lower end of the material transfer storage plate 20. The material transfer storage plate 20 is provided with four groups of material transfer sliding holes 26 at intervals (see the attached manual). Fig.23 ).

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

[0029] A displacement probe 25 is installed above the transfer material storage plate 20 through a detection cylinder 23 and a displacement sensor 24. During operation, when the cross truss 18 drives the transfer material storage plate 20 to move below the displacement probe 25, after the displacement probe 25 is inserted into the transfer material slide hole 26 of the transfer material storage plate 20, the displacement sensor 24 can sense whether the number of steel balls stored in the transfer material slide hole 26 meets the requirements.

[0030] Two sets of nut assembly positioning components 5 are installed on the frame 1 below the steel ball guide component 3 (see the attached manual). Figure 1 , 2 and 3). The nut assembly positioning component 5 includes a rotating seat 41, a driving gear 42, a supporting seat 44 and a pressing block 45 (see the attached manual). Fig.13 and 14 ).

[0031] The frame 1 is provided with a rotating seat 41 through a mounting bracket 40 and a bearing; a driving gear 42 is provided on the mounting bracket 40 on one side of the rotating seat 41 through a motor; the driving gear 42 is meshed and connected with a driven gear 43 installed on one side of the rotating seat 41 (see the attached manual). Fig.13 ). Under the cooperation of the driving gear 42 and the driven gear 43, the driving gear 42 can drive the rotating seat 41 to rotate a certain angle.

[0032] A support seat 44 is fixedly mounted on the rotating seat 41; a pressing block 45 is mounted above the supporting seat 44 through a sliding rail; a pressing cylinder 46 is mounted at the bottom of the rotating seat 41 (see the attached manual). Fig.14 ); The clamping cylinder 46 is connected to the clamping block 45; the workpiece (nut assembly) can be pressed and fixed on the support seat 44 under the action of the clamping cylinder 46 (see the attached manual). Fig.13 ).

[0033] The rotating seat 41 is provided with an escape fork 47 (see the attached manual). Fig.13 During operation, the workpiece (screw) can pass through the avoidance fork 47 and then be inserted into the interior of the workpiece (nut assembly) (see the attached manual). Figure 1 ).

[0034] The frame 1 below the nut assembly positioning component 5 is equipped with a lead screw drive component 6 (see the attached manual). 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 a secondary lifting seat 49 (see the attached manual). Fig.11 ).

[0035] The frame 1 is provided with a main lifting seat 48 through a screw mechanism 12; the main lifting seat 48 is provided with a secondary lifting seat 49 through a screw mechanism; the secondary lifting seat 49 is provided with a rotating clamping seat 52 through a driving motor 50 and a transmission belt 51 (see the attached manual). Fig.11 ). The rotating clamping seat 52 is an external device. When working, it can clamp the lower end of the workpiece (screw) with its internal clamping claws. Then the driving motor 50 and the transmission belt 51 can drive the rotating clamping seat 52 to rotate automatically, and drive the rotating clamping seat 52 to move up and down through the main lifting seat 48 and the auxiliary lifting seat 49.

[0036] A screw positioning assembly 7 is mounted on the frame 1 on one side of the upper end of the screw drive assembly 6 (see the attached manual). Figure 1 , 2 and 3). The 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 (see the attached manual). Figure 8 and 9 ).

[0037] The frame 1 is provided with a locking claw 54 through a locking cylinder 53; a plurality of locking rollers 55 are symmetrically provided at the lower end of the locking claw 54; a positioning cylinder 56 is provided on the frame 1 below the locking claw 54; a positioning block 58 is provided at the end of the positioning cylinder 56 through a buffer spring 57 and a displacement sensor 24; a threaded groove 59 is provided at the end of the positioning block 58 (see the attached manual). Fig. 9 and 10 ).

[0038] During operation, the locking claw 54 can clamp the upper end of the workpiece (screw) through the locking roller 55. Under the straightening action of the locking roller 55, the workpiece (screw) can move up and down and rotate freely without deflection. During operation, when the positioning block 58 contacts the surface of the workpiece (screw) under the elastic force of the buffer spring 57, and when the thread groove 59 is inserted into the thread groove on the workpiece (screw), it means that the workpiece (screw) is at the zero position. At this time, the displacement sensor 24 can sense the zero position through the displacement change.

[0039] When the assembly device of the automotive steering gear screw, nut assembly and steel ball is in operation, first one end of the workpiece (screw) to be installed is inserted into the rotating clamping seat 52, and the rotating clamping seat 52 clamps the lower end of the workpiece (screw). Then the locking claw 54 in the screw positioning assembly 7 contacts the upper end of the workpiece (screw) through the locking roller 55 under the cooperation of the locking cylinder 53 (see the attached manual). Figure 6 and 8). Then the positioning cylinder 56 pushes the positioning block 58 to make it contact with the surface of the buffer spring 57. At this time, the driving motor 50 and the transmission belt 51 drive the workpiece (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 (screw) to move upward. During this process, if the displacement sensor 24 senses the position change of the positioning block 58, it means that the thread groove 59 of the positioning block 58 is stuck in the thread groove on the workpiece (screw), that is, the workpiece (screw) is at the zero position at this time. At this time, the workpiece (screw) stops moving, and the loading of the workpiece (screw) can be completed.

[0040] After the workpiece (screw) is loaded, the workpiece (nut assembly) is placed on the support seat 44 of the corresponding nut assembly positioning component 5 above the workpiece (screw). Then, under the action of the clamping cylinder 46, the clamping block 45 can be pressed and fixed on the support seat 44 (see the attached manual). Fig.13 ). In this way, the loading of the workpiece (nut assembly) can be completed.

[0041] After the workpiece (nut assembly) is loaded, the transfer storage plate 20 in the transfer assembly 4 is moved to the bottom of the corresponding steel ball feed 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 attached manual). Figure 1 and 25 ). Then the corresponding sealing block 11 is separated from the bottom end of the material lowering sleeve 9, so that the steel balls in the material storage box 8 will enter a group of material transfer sliding holes 26 in the material transfer storage plate 20 along the material guide plate 16; when a group of material transfer sliding holes 26 are filled with corresponding steel balls, the material transfer assembly 4 and the material guide plate 16 repeat the above actions until all four groups of material transfer sliding holes 26 of the material transfer storage plate 20 are filled with steel balls. Then the material transfer assembly 4 drives the material transfer storage plate 20 to reset, and the material guide plate 16 is reset.

[0042] After the transfer material storage plate 20 is filled with steel balls, the cross truss 18 drives the transfer material storage plate 20 to move to the bottom of the displacement probe 25. At this time, the displacement probe 25 is inserted into the transfer material slide hole 26 of the transfer material storage plate 20. At this time, the displacement sensor 24 can detect the height of the steel balls stored in the transfer material slide hole 26. If the height meets the requirement, it means that the steel balls stored in the transfer material storage plate 20 are qualified; if they are unqualified, the transfer material component 4 will repeat the action and refill the steel balls with the cooperation of the guide plate 16.

[0043] After the above work is completed, the lateral sliding carriage 27 of the steel ball guide 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 guide assembly 3 under the action of the cross truss 18 (see the attached manual). Fig.26 and 27). At this time, the material transfer cylinder 21 drives the sealing plate 22 to move, so that all the steel balls in the material transfer storage plate 20 fall into the material guide box 30. Then the material transfer storage plate 20 is reset, and the material guide box 30 and the material guide rod 34 in the steel ball material guide assembly 3 move to correspond to the workpiece (nut assembly) on the nut assembly positioning assembly 5 (see the attached manual). Fig.15 ), at this time, the two groups of guide sliding holes 39 in the material guide box 30 correspond to the two groups of steel ball guide holes 38 on the material guide rod 34 (see the attached manual Fig.18 ).

[0044] After the above actions are completed, the steel ball guide assembly 3 drives the lower end of the guide rod 34 to be inserted into the bottom end of the workpiece (nut assembly), and 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 is plugged into the bottom of the guide rod 34.

[0045] After the above work is completed, the rotating clamping seat 52 drives the workpiece (screw) to rotate, while the auxiliary lifting seat 49 and the lifting slide 28 of the steel ball guide assembly 3 cooperate with each other to move the workpiece (screw) upward during the self-rotation. In this process, the material separation slide 35 at the bottom of the corresponding guide slide hole 39 in the material guide box 30 can open the corresponding guide slide hole 39 in the material guide box 30 with the cooperation of the slide clamp 37 and the material dividing cylinder 36. As a result, the two groups of steel balls in the corresponding guide slide holes 39 fall into the steel ball guide holes 38 of the guide rod 34 under the action of gravity, and enter between the rotating workpiece (screw) and the workpiece (nut assembly) under the guidance of the steel ball guide holes 38. In this way, the assembly of the two groups of steel balls can be completed.

[0046] When the workpiece (screw) moves up to a certain position to complete the assembly of the two sets of steel balls, the driving rotating seat 41 in the nut assembly positioning component 5 rotates a certain angle under the cooperation of the driving gear 42 and the driven gear 43. Then the workpiece (screw) and the guide rod 34 are rotated down a distance.

[0047] After the above process is completed, the horizontal push-pull cylinder 29 in the steel ball guide assembly 3 pushes the guide box 30 to move one station, so that the other two groups of guide slide holes 39 in the guide box 30 correspond to the two groups of steel ball guide holes 38 on the guide rod 34. Then the workpiece (screw) moves upward while rotating. In this process, the material separation slide 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 under the cooperation of the slide clamp 37 and the material dividing cylinder 36, so that the steel ball falls into the steel ball guide hole 38 of the guide rod 34, and enters between the rotating workpiece (screw) and the workpiece (nut assembly) under the guidance of the steel ball guide hole 38. In this way, the assembly of the remaining two groups of steel balls can be completed. At this point, the assembly of the steel balls can be completed.

[0048] After the assembly device of the automobile steering gear screw rod, nut assembly and steel ball completes the assembly of the steel ball, the assembled workpiece is removed and the assembly device can enter the next working cycle.

[0049] The purpose of providing two sets of nut assembly positioning components 5 and screw drive components 6 in the present application is to enable one set of nut assembly positioning components 5 and screw drive components 6 to work in conjunction with each other while the other set of nut assembly positioning components 5 and screw drive components 6 can perform loading work, thereby achieving the purpose of improving assembly efficiency.

[0050] The assembly device of the screw rod, nut assembly and steel ball of the automobile steering gear has a compact structure and an ingenious design, and can mechanically complete the assembly work of the screw rod, nut assembly and steel ball to solve the problem of low installation efficiency in the existing installation method, and is particularly suitable for the needs of automobile steering gear installation and use.

Claims

1. An assembly device for a screw rod, a nut assembly and a steel ball of an automobile steering gear, comprising a frame (1), a screw positioning assembly (7), a screw driving assembly (6), a steel ball guide assembly (3), a nut assembly positioning assembly (5), a material storage assembly (2) and a material transfer assembly (4), characterized in that: The upper end of the frame (1) is provided with a material storage assembly (2); a steel ball material guide assembly (3) is provided on the frame (1) below the material storage assembly (2); a material transfer assembly (4) is provided on the frame (1) on one side of the steel ball material guide assembly (3) and the material storage assembly (2); two sets of nut assembly positioning assemblies (5) are provided on the frame (1) below the steel ball material guide assembly (3); a screw drive assembly (6) is provided on the frame (1) below the nut assembly positioning assembly (5); and a screw positioning assembly (7) is provided on the frame (1) on one side of the upper end of the screw drive assembly (6).

2. The assembly device of a screw rod, a nut assembly and a steel ball of an automobile steering gear according to claim 1, characterized in that: The material storage assembly (2) comprises a material storage box (8), a material guide hose (10), a material discharge sleeve (9), a sealing block (11), a transverse sliding seat (13), a material guide plate (16), a pushing cylinder (15) and a reversing cylinder (14); a plurality of material storage boxes (8) are installed at intervals on the upper end of the frame (1); a plurality of material discharge sleeves (9) are installed at intervals on the frame (1) on one side of the material storage box (8); the upper end of the material discharge sleeve (9) is connected to the corresponding material storage box (8) through the material guide hose (10). 8); a sealing block (11) is installed at the lower end of the feeding sleeve (9) through a cylinder; the sealing block (11) is intermittently sealed and connected to the end of the feeding sleeve (9); a transverse sliding seat (13) is installed on the frame (1) below the feeding sleeve (9) through a screw mechanism (12) and a guide rail for sliding; a material guide plate (16) is installed on the transverse sliding seat (13) through a reversing cylinder (14) and a pushing cylinder (15); two groups of material guide sliding holes (17) are arranged in the material guide plate (16). A guide inclined plate is installed in the material storage box (8) through a lifting cylinder.

3. The assembly device of a screw rod, a nut assembly and a steel ball for an automobile steering gear according to claim 1, characterized in that: The material transfer assembly (4) comprises a cross truss (18), a material transfer storage plate (20), a displacement probe (25) and a sealing plate (22); the frame (1) is provided with an assembly plate (19) and a material transfer storage plate (20) via the cross truss (18); a sealing plate (22) is provided on the assembly plate (19) below the material transfer storage plate (20) via a material transfer cylinder (21); the sealing plate (22) is slidably sealedly connected to the lower end of the material transfer storage plate (20); a displacement probe (25) is provided above the material transfer storage plate (20) via a detection cylinder (23) and a displacement sensor (24). Four groups of material transfer sliding holes (26) are provided at intervals on the material transfer storage plate (20).

4. The assembly device of a screw rod, a nut assembly and a steel ball of an automobile steering gear according to claim 1, characterized in that: The steel ball material guide assembly (3) comprises a material guide box (30), a material guide 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 rod mechanism (12); the transverse slide (27) is mounted with a lifting slide (28) via a control screw rod; the material guide box (30) is mounted on the lifting slide (28) via a transverse push-pull cylinder (29) and a guide rail for sliding; two groups of extrusion rods (33) are mounted on the lifting slide (28) above the material guide box (30) via a vertical slide (31) and a driving cylinder (32); a material guide rod (34) is fixedly mounted on the lifting slide (28) below the material guide box (30); two groups of material partition slides (35) are slidably mounted below the material guide box (30); a slide clamp (37) is mounted on one side of the material guide box (30) via a material dividing cylinder (36).

5. The assembly device of a screw rod, a nut assembly and a steel ball for a steering gear of an automobile according to claim 4, characterized in that: The material guide rod (34) is provided with two groups of steel ball guide holes (38); and the material guide box (30) is provided with four groups of guide sliding holes (39).

6. The assembly device of a screw rod, a nut assembly and a steel ball for a steering gear of an automobile according to claim 1, characterized in that: The nut assembly positioning component (5) comprises a rotating seat (41), a driving gear (42), a supporting seat (44) and a pressing block (45); the rotating seat (41) is mounted on the frame (1) via a mounting bracket (40) and a bearing; a driving gear (42) is mounted on the mounting bracket (40) on one side of the rotating seat (41) via a motor; the driving gear (42) is meshedly connected with a driven gear (43) mounted on one side of the rotating seat (41); a supporting seat (44) is fixedly mounted on the rotating seat (41); a pressing block (45) is slidably mounted above the supporting seat (44) via a slide rail; a pressing cylinder (46) is mounted at the bottom of the rotating seat (41); the pressing cylinder (46) is connected to the pressing block (45); and an avoidance fork (47) is provided on the rotating seat (41).

7. The assembly device of a screw rod, a nut assembly and a steel ball for a steering gear of an automobile according to claim 1, characterized in that: The screw drive assembly (6) comprises a rotary clamping seat (52), a drive motor (50), a transmission belt (51), a main lifting seat (48) and a secondary lifting seat (49); the main lifting seat (48) is mounted on the frame (1) via a screw mechanism (12); the secondary lifting seat (49) is mounted on the main lifting seat (48) via a screw mechanism; and the rotary clamping seat (52) is mounted on the secondary lifting seat (49) via a drive motor (50) and a transmission belt (51).

8. The assembly device of a screw rod, a nut assembly and a steel ball for a steering gear of an automobile according to claim 1, characterized in that: The screw positioning assembly (7) comprises 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); a plurality of locking rollers (55) are symmetrically mounted at 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 at the end of the positioning cylinder (56) via a buffer spring (57) and a displacement sensor (24); a threaded groove (59) is provided at the end of the positioning block (58).

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