Combined assembling device of automobile universal joint

Abstract

The invention belongs to the technical field of assembling devices, and particularly relates to a combined assembling device of an automobile universal joint, which comprises an automatic feeding check ring mounting mechanism, a bidirectional clamping assembling mechanism, a universal joint clamping mechanism and a settlement avoidance type supporting assembly, the automatic feeding check ring mounting mechanism is arranged below the bidirectional clamping assembling mechanism, and the universal joint clamping mechanism is arranged below the settlement avoidance type supporting assembly. The two-way clamping and assembling mechanism is arranged on the settlement receding type supporting assembly, and the universal joint clamping mechanism is arranged on the settlement receding type supporting assembly. According to the automatic feeding check ring mounting mechanism, on one hand, the lifting action of a special-shaped pressing support during C-shaped check ring mounting serves as the control condition of C-shaped check ring feeding and feeding, a pushing bottom plate is temporarily attracted through a magnetic check ring groove, and rotation of the pushing bottom plate is limited through an elastic edge blocking rod;

Description

Technical Field

[0001] The invention belongs to the technical field of assembly devices, and in particular relates to a combined assembly device for automobile universal joints. Background Art

[0002] The universal joint is a transmission component used in automobiles, mainly composed of a cross shaft and a ball cage, in which the center of the cross shaft is often designed to be spherical. Although the structure of the universal joint is not complicated, its installation and assembly steps are relatively cumbersome and difficult to install. There are still many problems in automatically assembling it through mechanical equipment. First: the number of C-shaped retaining rings used to fix the sleeve is large, and the overall shape is circular (easy to rotate in the fixture), but the opening direction needs to be restricted (it cannot be allowed to rotate in the fixture). It is necessary to ensure the continuity of the C-shaped retaining ring feeding and adjust and restrict its opening direction, which generally requires control through multiple axial and relatively complex mechanisms; Second: The cross-axis ball core needs to be supported by a bracket in the initial state, but when it needs to rotate, the bracket that originally supports the cross-axis ball core will block its rotation.

[0003] Detailed actions like the ones mentioned above generally require complex mechanisms and control systems to implement. If we want to truly popularize automated assembly, the first task is to simplify the above mechanisms and improve the practicality and promotion value of the technical solutions through relatively simple and ingenious designs. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention proposes a combined assembly device of an automobile universal joint with simple structure and stability; in order to realize stable feeding of the C-shaped retaining ring, the present invention creatively proposes an automatic feeding retaining ring installation mechanism, on the one hand, the lifting action of the special-shaped downward pressure bracket that must be possessed when installing the C-shaped retaining ring is used as a control condition for the feeding of the C-shaped retaining ring, and the propulsion base plate is temporarily adsorbed through the magnetic retaining ring groove, and its rotation is restricted by the elastic edge lever; at the same time, the descent of the special-shaped downward pressure bracket and the lateral propulsion of the T-shaped push block are driven by the nut slider, which can simplify the transmission structure and improve stability, and more importantly, through the linkage method, it can achieve stable serialized actions and mutual matching of the movement speeds of various mechanisms without setting position feedback and control modules, only through a clever mechanical structure.

[0005] The technical solution adopted by the present invention is as follows: The present invention proposes a combined assembly device of an automobile universal joint, comprising an automatic feeding retaining ring installation mechanism, a two-way clamping assembly mechanism, a universal joint clamping mechanism and a sinking avoidance type support assembly, wherein the automatic feeding retaining ring installation mechanism is arranged below the two-way clamping assembly mechanism, the two-way clamping assembly mechanism is arranged on the sinking avoidance type support assembly, and the universal joint clamping mechanism is arranged on the sinking avoidance type support assembly.

[0006] Furthermore, the automatic feeding retaining ring installation mechanism includes an automatic downward pressing transmission assembly and a retaining ring feeding assembly, the automatic downward pressing transmission assembly is arranged on the bidirectional synchronous propulsion assembly, and the retaining ring feeding assembly is arranged below the bidirectional synchronous propulsion assembly.

[0007] Preferably, the automatic downward pressure transmission assembly includes a transverse rack, a transmission gear seat, a transmission gear body and a special-shaped downward pressure bracket, the transverse rack is fixed to the side of the T-shaped push block, the transmission gear seat is fixed to the bottom of the gantry frame, the transmission gear body is rotatably arranged in the transmission gear seat, the transmission gear body and the transverse rack are meshed for transmission, the special-shaped downward pressure bracket passes through the gantry frame and slides up and down, a longitudinal rack is provided on the special-shaped downward pressure bracket, the longitudinal rack is meshed for transmission with the transmission gear body, a magnetic retaining ring groove is also provided on the special-shaped downward pressure bracket, and elastic edge levers are symmetrically provided on both sides of the special-shaped downward pressure bracket.

[0008] Through the transmission of the transverse rack and the transmission gear body, the special-shaped downward pressure bracket can produce synchronous longitudinal sliding during the lateral sliding of the T-shaped push block. By lowering the special-shaped downward pressure bracket, the C-shaped retaining ring located in the magnetic retaining ring groove can be lowered and stuck in the countersunk groove, so that the axial position of the mounting sleeve can be limited by the C-shaped retaining ring, thereby completing the assembly and fixation of the universal joint assembly.

[0009] Furthermore, the retaining ring feeding assembly includes a fixed vertical plate, a transverse slide bar, a transverse slide plate and a feeding spring, the fixed vertical plate is fixedly connected to the bottom of the gantry frame, the transverse slide bar is fixedly connected to the fixed vertical plate, the transverse slide plate is engaged and slidably arranged on the transverse slide bar, and the feeding spring is arranged between the fixed vertical plate and the transverse slide plate.

[0010] The feeding spring can make the C-shaped retaining ring on the horizontal slide bar always have the tendency to slide toward the magnetic retaining ring groove, so that after the magnetic retaining ring groove reaches the specified position, the feeding and position limitation of the C-shaped retaining ring are automatically completed.

[0011] Preferably, the bidirectional clamping assembly mechanism comprises a bidirectional synchronous propulsion component and a pushing combination component, the bidirectional synchronous propulsion component is arranged on the main body bottom plate, and the pushing combination component is symmetrically arranged at both ends of the bidirectional synchronous propulsion component.

[0012] As a further preferred embodiment of the present invention, the bidirectional synchronous propulsion assembly includes a gantry frame, a screw support, a double-threaded screw and a screw driving gear. The gantry frame is arranged on the main body bottom plate, the screw support is arranged on the gantry frame, the double-threaded screw is rotatably arranged in the screw support, the screw driving gear is fixed to the middle position of the double-threaded screw, and the double-threaded screw is provided with threads in opposite directions on both sides of the screw driving gear.

[0013] By driving the double-threaded screw to rotate through an external device, the two T-shaped push blocks can be controlled to move closer to and farther from each other. When the two T-shaped push blocks are close to each other, the assembly of the transmission fork and the mounting sleeve, as well as the connection between the mounting sleeve and the connecting shaft can be completed by squeezing the mounting sleeve.

[0014] As a further preferred embodiment of the present invention, the pushing combination assembly includes a pushing slide rod, a T-shaped push block, a nut slider and a pushing spring, the pushing slide rod is fixedly connected to the bottom of the gantry frame, the T-shaped push block is snap-fitted and slidably arranged on the pushing slide rod, the nut slider is snap-fitted and slidably arranged in the gantry frame, the nut slider and the double-threaded screw are threadedly transmitted, and when the double-threaded screw rotates, the two nut sliders slide synchronously and in opposite directions, the nut slider is provided with a sliding push rod, the sliding push rod is slidably arranged in the T-shaped push block, and the pushing spring is arranged between the end of the sliding push rod and the T-shaped push block.

[0015] By pushing the spring, the T-shaped push block can be pushed to slide and support the installation sleeve when the T-shaped push block is not completely limited; and after the installation sleeve has been installed, the compression of the push spring can also prevent the T-shaped push block from restricting the continued sliding of the nut slider, thereby overcoming the technical contradiction that the nut slider must slide but cannot slide.

[0016] Furthermore, the universal joint clamping mechanism includes a universal joint assembly, an axial propulsion assembly and a rotating assembly, the axial propulsion assembly is arranged on the main body bottom plate, the rotating assembly is arranged on the axial propulsion assembly, and the universal joint assembly is arranged on the rotating assembly.

[0017] Preferably, the universal joint assembly includes a cross-axis ball core, a transmission fork, a mounting sleeve and a C-shaped retaining ring, the outer ring of the cross-axis ball core is evenly distributed with four groups of support segments and connecting shafts, the tail of the transmission fork is provided with a transmission shaft, the transmission fork and the connecting shaft are rotatably connected through a mounting sleeve, one end of the mounting sleeve is provided with a tail flange, the mounting sleeve is also provided with a countersunk groove, the C-shaped retaining ring is clamped in the countersunk groove, and both ends of the C-shaped retaining ring are provided with clamping bases.

[0018] The connection between the cross-axis ball core and the transmission fork can be achieved by installing the sleeve, and the position of the installed sleeve can be axially locked by the C-shaped retaining ring, thereby avoiding the embarrassing situation of the installed sleeve slipping out during use. On the other hand, the support section can not only leave position and space for the contact of the Y-shaped support frame, but also through the extrusion contact between its own shoulder and the installation sleeve, the installed cross-axis ball core will not produce obvious axial movement in the transmission fork.

[0019] As a further preferred embodiment of the present invention, the axial propulsion assembly includes a propulsion base plate, a propulsion guide rail, a propulsion slider and a propulsion electric cylinder, the propulsion base plate is arranged on the main body base plate, the propulsion guide rail is arranged on the propulsion base plate, the propulsion slider is arranged on the propulsion guide rail, and the fixed end of the propulsion electric cylinder is arranged on the propulsion base plate.

[0020] As a further preferred embodiment of the present invention, the rotating assembly includes a clamping base, a rotating sleeve, a rotating motor and a pinion gear. The clamping base is arranged on the propulsion slider, the rotating sleeve is rotatably arranged in the clamping base, an external gear 1 is arranged at one end of the rotating sleeve, the telescopic part of the propulsion electric cylinder is arranged at the bottom of the clamping base, the rotating motor is arranged on the side of the clamping base, the pinion gear is engaged with the output shaft of the rotating motor, and the pinion gear and the external gear 1 are meshed for transmission.

[0021] The axial sliding and horizontal rotation of the transmission fork can be controlled by the axial propulsion assembly and the rotation assembly, thereby creating conditions for the automatic assembly of the complex structure of the present invention.

[0022] Furthermore, the sinking avoidance support assembly includes a Y-shaped support frame, a sliding check slider, a main body bottom plate and a slider return spring, the Y-shaped support frame is slidably arranged in the main body bottom plate, the Y-shaped support frame is provided with a ratchet portion in an array, the sliding check slider is slidably arranged on the main body bottom plate, one end of the slider return spring is arranged on the main body bottom plate, and the other end of the slider return spring is arranged on the sliding check slider.

[0023] The Y-shaped support frame can support the position of the cross-axis ball core in the initial state on the one hand, and can automatically avoid the position when the C-shaped retaining ring is pressed down to install and the installed transmission fork is subsequently rotated by descending the Y-shaped support frame on the other hand.

[0024] The beneficial effects achieved by the present invention using the above structure are as follows: (1) Through the transmission of the transverse rack and the transmission gear body, the special-shaped downward pressing bracket can produce synchronous longitudinal sliding during the horizontal sliding of the T-shaped push block. By descending the special-shaped downward pressing bracket, the C-shaped retaining ring located in the magnetic retaining ring groove can be lowered and stuck in the countersunk groove, so that the axial position of the installation sleeve is limited by the C-shaped retaining ring, thereby completing the assembly and fixation of the universal joint assembly.

[0025] (2) The loading spring can ensure that the C-shaped retaining ring on the horizontal slide bar always has a tendency to slide toward the magnetic retaining ring groove, so that after the magnetic retaining ring groove reaches the specified position, the loading and position limitation of the C-shaped retaining ring are automatically completed.

[0026] (3) By driving the double-threaded screw to rotate through an external device, the two T-shaped push blocks can be controlled to move closer to or farther from each other. When the two T-shaped push blocks move closer to each other, the assembly of the transmission fork and the mounting sleeve, as well as the connection between the mounting sleeve and the connecting shaft can be completed by squeezing the mounting sleeve.

[0027] (4) The push spring can push the T-shaped push block to slide and support the installation sleeve when the T-shaped push block is not fully limited; and after the installation sleeve has been installed, the compression of the push spring can also prevent the T-shaped push block from restricting the continued sliding of the nut slider; thereby overcoming the technical contradiction that the nut slider must slide but cannot slide.

[0028] (5) The connection between the cross-axle ball core and the transmission fork can be achieved by installing the shaft sleeve, and the position of the installed shaft sleeve can be axially locked by the C-shaped retaining ring, thereby avoiding the embarrassing situation that the installed shaft sleeve slips out during use. On the other hand, the support section can not only leave position and space for the contact of the Y-shaped support frame, but also through the extrusion contact between its own shoulder and the installed shaft sleeve, the installed cross-axle ball core will not produce obvious axial movement in the transmission fork.

[0029] (6) The axial sliding and horizontal rotation of the transmission fork can be controlled by the axial propulsion assembly and the rotation assembly, thereby creating conditions for the automated assembly of the complex structure of the present invention.

[0030] (7) The Y-shaped support frame can support the position of the cross-axis ball core in the initial state. On the other hand, when the C-shaped retaining ring is pressed down to install and the installed transmission fork is subsequently rotated, the Y-shaped support frame can be lowered to automatically avoid the position. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A three-dimensional diagram of a combined assembly device for a vehicle universal joint proposed by the present invention; Figure 2 This is a front view of a combined assembly device for a vehicle universal joint proposed by the present invention; Figure 3 It is a left view of a combined assembly device of a vehicle universal joint proposed by the present invention; Figure 4 A top view of a combined assembly device for a vehicle universal joint proposed by the present invention; Figure 5 for Figure 2 A cross-sectional view along the cutting line AA; Figure 6 for Figure 3 A cross-sectional view along the cutting line BB; Figure 7 An exploded schematic diagram of a combined assembly device for a vehicle universal joint proposed by the present invention; Figure 8 for Figure 7 A partial enlarged view of point Ⅰ in the middle; Fig. 9 for Figure 7 A partial enlarged view of the middle II; Fig.10 for Figure 6 A partial enlarged view of the middle part III; Fig.11 for Figure 6 A partial enlarged view of the middle IV; Fig.12 for Figure 5 A partial enlarged view of point V in the middle; Fig.13 for Figure 5 A partial enlarged view of point VI in the middle.

[0032] Among them, 1. Automatic feeding retaining ring installation mechanism, 2. Two-way clamping assembly mechanism, 3. Universal joint clamping mechanism, 4. Settling avoidance support assembly, 5. Automatic downward pressure transmission assembly, 6. Retaining ring feeding assembly, 7. Horizontal rack, 8. Transmission gear seat, 9. Transmission gear body, 10. Special-shaped downward pressure bracket, 11. Fixed vertical plate, 12. Horizontal slide bar, 13. Horizontal slide plate, 14. Feeding spring, 15. Longitudinal rack, 16. Magnetic retaining ring groove, 17. Elastic edge lever, 18. Two-way synchronous propulsion assembly, 19. Push combination assembly, 20. Gantry frame, 21. Screw support, 22. Double threaded screw, 23. Screw drive gear, 24. Push slide bar, 25. T-shaped push block, 26. nut slider, 27, push spring, 28, sliding push rod, 29, universal joint assembly, 30, axial propulsion assembly, 31, rotating assembly, 32, cross shaft ball core, 33, transmission fork, 34, mounting sleeve, 35, C-shaped retaining ring, 36, propulsion base plate, 37, propulsion guide rail, 38, propulsion slider, 39, propulsion electric cylinder, 40, clamping base, 41, rotating sleeve, 42, rotating motor, 43, pinion, 44, support section, 45, connecting shaft, 46, transmission shaft, 47, tail flange, 48, countersunk groove, 49, fixed ring, 50, external gear 1, 51, Y-shaped support frame, 52, sliding check slider, 53, slider reset spring, 54, ratchet part, 55, main base plate.

[0033] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0036] like Figure 1 to Figure 13 As shown, the present invention proposes a combined assembly device for an automobile universal joint, comprising an automatic feeding retaining ring installation mechanism 1, a two-way clamping assembly mechanism 2, a universal joint clamping mechanism 3 and a sinking avoidance type support assembly 4, wherein the automatic feeding retaining ring installation mechanism 1 is arranged below the two-way clamping assembly mechanism 2, the two-way clamping assembly mechanism 2 is arranged on the sinking avoidance type support assembly 4, and the universal joint clamping mechanism 3 is arranged on the sinking avoidance type support assembly 4.

[0037] The sinking avoidance support assembly 4 includes a Y-shaped support frame 51, a sliding non-return slider 52, a main body bottom plate 55 and a slider return spring 53. The Y-shaped support frame 51 is slidably arranged in the main body bottom plate 55. A ratchet portion 54 is arranged in an array on the Y-shaped support frame 51. The sliding non-return slider 52 is slidably arranged on the main body bottom plate 55. One end of the slider return spring 53 is arranged on the main body bottom plate 55, and the other end of the slider return spring 53 is arranged on the sliding non-return slider 52.

[0038] On the one hand, the Y-shaped support frame 51 can support the position of the cross-axis ball core 32 in the initial state, and on the other hand, when the C-shaped retaining ring 35 is pressed down to install and the installed transmission fork 33 is subsequently rotated, the position can be automatically avoided by descending the Y-shaped support frame 51.

[0039] The universal joint clamping mechanism 3 includes a universal joint assembly 29 , an axial propulsion assembly 30 and a rotation assembly 31 . The axial propulsion assembly 30 is arranged on the main body bottom plate 55 , the rotation assembly 31 is arranged on the axial propulsion assembly 30 , and the universal joint assembly 29 is arranged on the rotation assembly 31 .

[0040] The universal joint assembly 29 includes a cross-axis ball core 32, a transmission fork 33, a mounting sleeve 34 and a C-shaped retaining ring 35. The outer ring of the cross-axis ball core 32 is evenly distributed with four groups of support sections 44 and connecting shafts 45. The tail of the transmission fork 33 is provided with a transmission shaft 46. The transmission fork 33 and the connecting shaft 45 are rotatably connected through the mounting sleeve 34. One end of the mounting sleeve 34 is provided with a tail flange 47. The mounting sleeve 34 is also provided with a countersunk groove 48. The C-shaped retaining ring 35 is clamped in the countersunk groove 48. Clamping bases 40 are provided at both ends of the C-shaped retaining ring 35.

[0041] The connection between the cross-axis ball core 32 and the transmission fork 33 can be achieved by installing the shaft sleeve 34, and the position of the installation sleeve 34 can be axially locked by the C-shaped retaining ring 35, thereby avoiding the embarrassing situation that the installation sleeve 34 slips out during use. On the other hand, the support section 44 can not only leave a position and space for the contact of the Y-shaped support frame 51, but also through the extrusion contact between its own shoulder and the installation shaft sleeve 34, the installed cross-axis ball core 32 will not produce obvious axial movement in the transmission fork 33.

[0042] The axial propulsion assembly 30 includes a propulsion base plate 36, a propulsion guide rail 37, a propulsion slider 38 and a propulsion electric cylinder 39. The propulsion base plate 36 is arranged on the main body base plate 55, the propulsion guide rail 37 is arranged on the propulsion base plate 36, the propulsion slider 38 is arranged on the propulsion guide rail 37, and the fixed end of the propulsion electric cylinder 39 is arranged on the propulsion base plate 36.

[0043] The rotating assembly 31 includes a clamping base 40, a rotating sleeve 41, a rotating motor 42 and a pinion 43. The clamping base 40 is arranged on the pushing slider 38, and the rotating sleeve 41 is rotatably arranged in the clamping base 40. An external gear 50 is arranged at one end of the rotating sleeve 41. The telescopic part of the pushing electric cylinder 39 is arranged at the bottom of the clamping base 40. The rotating motor 42 is arranged on the side of the clamping base 40. The pinion 43 is engaged with the output shaft of the rotating motor 42, and the pinion 43 and the external gear 50 are meshed for transmission.

[0044] The axial sliding and horizontal rotation of the transmission fork 33 can be controlled by the axial propulsion assembly 30 and the rotation assembly 31, thereby creating conditions for the automatic assembly of the complex structure of the present invention.

[0045] The bidirectional clamping assembly mechanism 2 includes a bidirectional synchronous propulsion component 18 and a pushing combination component 19 . The bidirectional synchronous propulsion component 18 is arranged on the main body bottom plate 55 , and the pushing combination component 19 is symmetrically arranged at both ends of the bidirectional synchronous propulsion component 18 .

[0046] The bidirectional synchronous propulsion assembly 18 includes a gantry frame 20, a screw support 21, a double-threaded screw 22 and a screw drive gear 23. The gantry frame 20 is arranged on the main body bottom plate 55, the screw support 21 is arranged on the gantry frame 20, the double-threaded screw 22 is rotatably arranged in the screw support 21, the screw drive gear 23 is fixedly connected to the middle position of the double-threaded screw 22, and the double-threaded screw 22 is provided with threads in opposite directions on both sides of the screw drive gear 23.

[0047] By driving the double-threaded screw 22 to rotate through an external device, the two T-shaped push blocks 25 can be controlled to approach and move away from each other. When the two T-shaped push blocks 25 approach each other, the transmission fork 33 and the mounting sleeve 34 can be assembled, and the mounting sleeve 34 and the connecting shaft 45 can be connected by squeezing the mounting sleeve 34.

[0048] The pushing assembly 19 includes a pushing slide rod 24, a T-shaped push block 25, a nut slider 26 and a pushing spring 27. The pushing slide rod 24 is fixedly connected to the bottom of the gantry frame 20. The T-shaped push block 25 is slidably arranged on the pushing slide rod 24. The nut slider 26 is slidably arranged in the gantry frame 20. The nut slider 26 and the double-threaded screw rod 22 are threadedly transmitted. When the double-threaded screw rod 22 rotates, the two nut sliders 26 slide synchronously and in opposite directions. A sliding push rod 28 is provided on the nut slider 26. The sliding push rod 28 is slidably arranged in the T-shaped push block 25. The pushing spring 27 is arranged between the end of the sliding push rod 28 and the T-shaped push block 25.

[0049] By pushing the spring 27, the T-shaped push block 25 can be pushed to slide and support the installation sleeve 34 when the T-shaped push block 25 is not completely limited; and after the installation sleeve 34 has been installed, the compression of the push spring 27 can also prevent the T-shaped push block 25 from restricting the continued sliding of the nut slider 26; thereby overcoming the technical contradiction that the nut slider 26 must slide but cannot slide.

[0050] The automatic feeding retaining ring installation mechanism 1 includes an automatic downward pressing transmission component 5 and a retaining ring feeding component 6. The automatic downward pressing transmission component 5 is arranged on the two-way synchronous propulsion component 18, and the retaining ring feeding component 6 is arranged below the two-way synchronous propulsion component 18.

[0051] The automatic downward pressing transmission assembly 5 includes a transverse rack 7, a transmission gear seat 8, a transmission gear body 9 and a special-shaped downward pressing bracket 10. The transverse rack 7 is fixedly connected to the side of the T-shaped push block 25, the transmission gear seat 8 is fixedly connected to the bottom of the gantry frame 20, the transmission gear body 9 is rotatably arranged in the transmission gear seat 8, the transmission gear body 9 and the transverse rack 7 are meshed for transmission, the special-shaped downward pressing bracket 10 passes through the gantry frame 20 and slides up and down, a longitudinal rack 15 is provided on the special-shaped downward pressing bracket 10, the longitudinal rack 15 and the transmission gear body 9 are meshed for transmission, a magnetic retaining ring groove 16 is also provided on the special-shaped downward pressing bracket 10, and elastic edge levers 17 are symmetrically provided on both sides of the special-shaped downward pressing bracket 10.

[0052] Through the transmission of the transverse rack 7 and the transmission gear body 9, the special-shaped downward pressure bracket 10 can produce synchronous longitudinal sliding during the lateral sliding of the T-shaped push block 25. By descending the special-shaped downward pressure bracket 10, the C-shaped retaining ring 35 located in the magnetic retaining ring groove 16 can be lowered and stuck in the countersunk groove 48, so that the axial position of the mounting sleeve 34 is limited by the C-shaped retaining ring 35, thereby completing the assembly and fixation of the universal joint assembly 29.

[0053] The retaining ring feeding assembly 6 includes a fixed vertical plate 11, a transverse slide bar 12, a transverse slide plate 13 and a feeding spring 14. The fixed vertical plate 11 is fixedly connected to the bottom of the gantry frame 20, the transverse slide bar 12 is fixedly connected to the fixed vertical plate 11, the transverse slide plate 13 is engaged and slidably arranged on the transverse slide bar 12, and the feeding spring 14 is arranged between the fixed vertical plate 11 and the transverse slide plate 13.

[0054] The loading spring 14 can ensure that the C-shaped retaining ring 35 on the horizontal slide bar 12 always has a tendency to slide toward the magnetic retaining ring groove 16, so that after the magnetic retaining ring groove 16 reaches the specified position, the loading and position limitation of the C-shaped retaining ring 35 are automatically completed.

[0055] When in use, the user first needs to place the cross-axis ball core 32 on the Y-shaped support frame 51. Since the Y-shaped support frame 51 supports and clamps the support section 44, the cross-axis ball core 32 will not rotate freely on the Y-shaped support frame 51 without external force. Then, the transmission fork 33 is horizontally pushed toward the position where the cross-axis ball core 32 is located by extending the thrust cylinder 39. The mounting sleeve 34 is pre-installed in the hole of the cross-axis ball core 32 in a previous process, and the front end of the mounting sleeve 34 is clearance-fitted with the hole of the cross-axis ball core 32, so the pre-installation of the mounting sleeve 34 can be completed manually or with a small force; in the subsequent press-installation process, the mounting sleeve 34 and the cross-axis ball core 32 gradually transform into a transition fit and an interference fit.

[0056] The cross-axis ball core 32 is pushed to the position where the mounting sleeve 34 and the connecting shaft 45 are coaxial and then stops. Then, the external device drives the double-threaded screw 22 to rotate through the screw drive gear 23. Since the two ends of the double-threaded screw 22 are provided with threads in different directions, when the double-threaded screw 22 rotates, the nut sliders 26 at both ends will slide toward the center at the same time, and at the same time, the T-shaped push block 25 will slide toward the middle through the push spring 27; After the T-shaped push block 25 contacts the push slide rod 24, as the compression of the push spring 27 increases, the T-shaped push block 25 can completely install the mounting sleeve 34 into the cross-axis ball core 32, and sleeve the mounting sleeve 34 on the outside of the connecting shaft 45, thereby completing the connection between the transmission fork 33 and the cross-axis ball core 32. After the installation is completed, the mounting sleeve 34 and the transmission fork 33 are relatively fixed, and the connecting shaft 45 can rotate in the mounting sleeve 34.

[0057] Then the nut slider 26 continues to slide, and the nut slider 26 will drive the special-shaped pressing bracket 10 to descend through the transmission gear body 9 while sliding with the transverse rack 7. When the C-shaped retaining ring 35 on the magnetic retaining ring groove 16 descends to the countersunk groove 48, the mounting sleeve 34 has been installed. At this time, the special-shaped pressing bracket 10 continues to descend and the C-shaped retaining ring 35 on the magnetic retaining ring groove 16 will be engaged and installed in the countersunk groove 48; in this process, the C-shaped retaining ring 35 is sleeved on the mounting sleeve 34 through its own deformation, and the special-shaped pressing bracket 10 will also press down the Y-shaped support frame 51. At this time, since the cross-axis ball core 32 has been installed on the transmission fork 33, and there is also rotational resistance between the connecting shaft 45 and the mounting sleeve 34, the descent of the Y-shaped support frame 51 will not affect the current position of the cross-axis ball core 32.

[0058] Through the cooperation between the ratchet portion 54 and the rotating motor 42, the Y-shaped support frame 51 will not rebound after being lowered; After the C-shaped retaining ring 35 is installed, the two nut sliders 26 are moved away from each other by rotating the double-threaded screw 22 in the opposite direction, and the T-shaped push block 25 is also reset after the push spring 27 rebounds and resets; When the special-shaped pressing down bracket 10 rises again, the magnetic attraction force of the magnetic retaining ring groove 16 is not enough to carry the C-shaped retaining ring 35 that has been stuck in the countersunk groove 48 to rise, so the C-shaped retaining ring 35 will stay in the countersunk groove 48; in the process of the special-shaped pressing down bracket 10 being raised and lowered, due to the obstruction of the special-shaped pressing down bracket 10 itself, the C-shaped retaining ring 35 located on the horizontal slide bar 12 cannot be advanced. Only after the magnetic retaining ring groove 16 is reset to the top limit position, the C-shaped retaining ring 35 located at the front end of the horizontal slide bar 12 can slide into the magnetic retaining ring groove 16 and be temporarily fixed by the magnetic attraction force of the magnetic retaining ring groove 16. The elastic edge retaining rods 17 on both sides can not only prevent the C-shaped retaining ring 35 from rotating freely in the magnetic retaining ring groove 16, but also allow the C-shaped retaining ring 35 to undergo phase change through its own deformation during installation.

[0059] Each time the special-shaped downward pressure bracket 10 is raised or lowered, a set of C-shaped retaining rings 35 will be lowered and installed on the countersunk groove 48 below; when the cross-axis ball core 32 and a transmission fork 33 are installed, the transmission fork 33 is driven to rotate by the rotating motor 42 to rotate the cross-axis ball core 32 ninety degrees, and then the other transmission fork 33 is pushed to the specified position, and the installation of the sleeve 34 and the C-shaped retaining ring 35 can be completed in the same way as the above steps.

[0060] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0061] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A combined assembly device for automobile universal joints, characterized in that: The invention comprises an automatic feeding retaining ring installation mechanism (1), a two-way clamping assembly mechanism (2), a universal joint clamping mechanism (3) and a subsidence avoidance type support assembly (4), wherein the automatic feeding retaining ring installation mechanism (1) is arranged below the two-way clamping assembly mechanism (2), the two-way clamping assembly mechanism (2) is arranged on the subsidence avoidance type support assembly (4), and the universal joint clamping mechanism (3) is arranged on the subsidence avoidance type support assembly (4); The sinking avoidance support assembly (4) comprises a main body bottom plate (55), and the bidirectional clamping assembly mechanism (2) comprises a bidirectional synchronous propulsion assembly (18) and a propulsion combination assembly (19), wherein the bidirectional synchronous propulsion assembly (18) is arranged on the main body bottom plate (55), and the propulsion combination assembly (19) is symmetrically arranged at two ends of the bidirectional synchronous propulsion assembly (18); The automatic loading retaining ring installation mechanism (1) comprises an automatic downward pressing transmission assembly (5) and a retaining ring loading assembly (6), wherein the automatic downward pressing transmission assembly (5) is arranged on the bidirectional synchronous advancing assembly (18), and the retaining ring loading assembly (6) is arranged below the bidirectional synchronous advancing assembly (18); The universal joint clamping mechanism (3) comprises a universal joint assembly (29), an axial propulsion assembly (30) and a rotation assembly (31); the axial propulsion assembly (30) is arranged on a main body bottom plate (55); the rotation assembly (31) is arranged on the axial propulsion assembly (30); and the universal joint assembly (29) is arranged on the rotation assembly (31).

2. The assembly device of a vehicle universal joint according to claim 1, characterized in that: The bidirectional synchronous propulsion assembly (18) comprises a gantry frame (20), a screw support (21), a double-threaded screw (22) and a screw drive gear (23); the gantry frame (20) is arranged on a main body bottom plate (55); the screw support (21) is arranged on the gantry frame (20); the double-threaded screw (22) is rotatably arranged in the screw support (21); the screw drive gear (23) is fixed to a middle position of the double-threaded screw (22); and the double-threaded screw (22) is provided with threads in opposite directions on both sides of the screw drive gear (23).

3. The assembly device of a vehicle universal joint according to claim 2, characterized in that: The pushing assembly (19) comprises a pushing slide bar (24), a T-shaped push block (25), a nut slider (26) and a pushing spring (27); the pushing slide bar (24) is fixedly connected to the bottom of the gantry frame (20); the T-shaped push block (25) is slidably mounted on the pushing slide bar (24); the nut slider (26) is slidably mounted in the gantry frame (20); the nut slider (26) and the double-threaded screw (22) are threadedly driven; when the double-threaded screw (22) rotates, the two nut sliders (26) slide synchronously and in opposite directions; a sliding push rod (28) is provided on the nut slider (26); the sliding push rod (28) is slidably mounted in the T-shaped push block (25); and the pushing spring (27) is disposed between the end of the sliding push rod (28) and the T-shaped push block (25).

4. The assembly device of a vehicle universal joint according to claim 3, characterized in that: The automatic downward pressing transmission assembly (5) comprises a transverse rack (7), a transmission gear seat (8), a transmission gear body (9) and a special-shaped downward pressing bracket (10), wherein the transverse rack (7) is fixedly connected to the side of the T-shaped push block (25), the transmission gear seat (8) is fixedly connected to the bottom of the gantry frame (20), the transmission gear body (9) is rotatably arranged in the transmission gear seat (8), the transmission gear body (9) and the transverse rack (7) are meshed for transmission, the special-shaped downward pressing bracket (10) passes through the gantry frame (20) and slides up and down, the special-shaped downward pressing bracket (10) is provided with a longitudinal rack (15), the longitudinal rack (15) and the transmission gear body (9) are meshed for transmission, the special-shaped downward pressing bracket (10) is also provided with a magnetic retaining ring groove (16), and elastic edge retaining rods (17) are symmetrically provided on both sides of the special-shaped downward pressing bracket (10).

5. The assembly device of a vehicle universal joint according to claim 4, characterized in that: The retaining ring feeding assembly (6) comprises a fixed vertical plate (11), a transverse slide bar (12), a transverse slide plate (13) and a feeding spring (14); the fixed vertical plate (11) is fixedly connected to the bottom of the gantry frame (20); the transverse slide bar (12) is fixedly connected to the fixed vertical plate (11); the transverse slide plate (13) is slidably engaged on the transverse slide bar (12); and the feeding spring (14) is arranged between the fixed vertical plate (11) and the transverse slide plate (13).

6. The assembly device of a vehicle universal joint according to claim 5, characterized in that: The universal joint assembly (29) comprises a cross-axis ball core (32), a transmission fork (33), a mounting sleeve (34) and a C-shaped retaining ring (35); four groups of support sections (44) and connecting shafts (45) are evenly distributed in an annular shape on the outer side of the cross-axis ball core (32); a transmission shaft portion (46) is provided at the rear end of the transmission fork (33); the transmission fork (33) and the connecting shaft (45) are rotatably connected via the mounting sleeve (34); a rear flange (47) is provided at one end of the mounting sleeve (34); a countersunk groove (48) is also provided on the mounting sleeve (34); the C-shaped retaining ring (35) is engaged in the countersunk groove (48); and clamping bases (40) are provided at both ends of the C-shaped retaining ring (35).

7. The assembly device of a vehicle universal joint according to claim 6, characterized in that: The axial propulsion assembly (30) comprises a propulsion base plate (36), a propulsion guide rail (37), a propulsion slider (38) and a propulsion electric cylinder (39); the propulsion base plate (36) is arranged on the main body base plate (55); the propulsion guide rail (37) is arranged on the propulsion base plate (36); the propulsion slider (38) is arranged on the propulsion guide rail (37); and the fixed end of the propulsion electric cylinder (39) is arranged on the propulsion base plate (36).

8. The assembly device of a vehicle universal joint according to claim 7, characterized in that: The rotating assembly (31) comprises a clamping base (40), a rotating sleeve (41), a rotating motor (42) and a pinion (43); the clamping base (40) is arranged on the advancing slider (38); the rotating sleeve (41) is rotatably arranged in the clamping base (40); an external gear (50) is arranged at one end of the rotating sleeve (41); the telescopic portion of the advancing electric cylinder (39) is arranged at the bottom of the clamping base (40); the rotating motor (42) is arranged on the side of the clamping base (40); the pinion (43) is engaged with the output shaft of the rotating motor (42); and the pinion (43) and the external gear (50) are meshed for transmission.

9. The assembly device of a vehicle universal joint according to claim 8, characterized in that: The sinking avoidance support assembly (4) further comprises a Y-shaped support frame (51), a sliding non-return slider (52) and a slider return spring (53); the Y-shaped support frame (51) is slidably arranged in the main body bottom plate (55); a ratchet portion (54) is arranged in an array on the Y-shaped support frame (51); the sliding non-return slider (52) is slidably arranged on the main body bottom plate (55); one end of the slider return spring (53) is arranged on the main body bottom plate (55); and the other end of the slider return spring (53) is arranged on the sliding non-return slider (52).

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