Press fitting device for shell and rotor of automobile steering device

Abstract

The invention discloses a press-fitting device for an automobile steering device shell and a rotor. The press-fitting device comprises a press-fitting assembly, an anti-falling assembly, a switching assembly and a grabbing assembly. The grabbing assemblies are in one-to-one correspondence with the rotors in number, and the grabbing assemblies are used for grabbing the corresponding rotors. The switching assembly is used for driving the grabbing assemblies to synchronously move in a reciprocating mode in the first direction so that the two grabbing assemblies can be sequentially aligned with the press-fitting assembly. The press-fitting assembly comprises a servo press and a lifting air cylinder which are arranged in the second direction in a spaced mode, the servo press is used for pushing the grabbing assembly aligned with the servo press to move downwards, and the lifting air cylinder is connected with the grabbing assembly aligned with the lifting air cylinder in a clamped mode and can limit and lift the grabbing assembly to the first height position. The anti-falling assembly is used for limiting the other grabbing assembly which is not aligned with the press-fitting assembly to the first height position, and the grabbing assembly is prevented from falling under the action of gravity. The press-fitting device can realize sequential press-fitting of a plurality of rotors by only needing one servo press, so that the cost is saved, and quick press-fitting of the shell and the rotors can be realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of robot workstations, and in particular to a press-fitting device for a housing and a rotor of a vehicle steering gear. BACKGROUND

[0002] A vehicle steering gear includes a housing and a rotor, and the assembly of the rotor and the housing is mostly achieved by a press-fitting method, i.e., the rotor is pressed into the housing by mechanical force to realize the installation of the rotor and the housing. Two rotors, i.e., an upper rotor and a lower rotor, need to be press-fitted in a mounting groove of the housing. Generally, the lower rotor is first press-fitted into the mounting groove by a servo press, and then the housing is moved to a working position of a next servo press, and the upper rotor is press-fitted into the mounting groove by the next servo press. That is, the press-fitting of the housing and the rotor requires two stations, and two servo presses are arranged to press-fit the two rotors, but the price of the servo press is relatively high, which increases the cost of the enterprise. SUMMARY

[0003] To overcome the above-mentioned defects, the purpose of the present application is to provide a press-fitting device for a housing and a rotor of a vehicle steering gear, which can realize the press-fitting of multiple rotors in sequence by using only one servo press, save the cost, and realize the rapid press-fitting of the housing and the rotor.

[0004] To achieve the above purpose, the technical scheme adopted by the present application is as follows: a press-fitting device for a housing and a rotor of a vehicle steering gear, which is used for press-fitting multiple rotors into the housing, and includes a fixed frame, a pressing mechanism arranged above the housing on the fixed frame, and the pressing mechanism includes: a grabbing assembly corresponding to the rotors one by one, the grabbing assemblies are arranged at intervals along a first direction and are used for grabbing the corresponding rotors; a switching assembly including a transverse plate and lifting plates corresponding to the grabbing assemblies, the lifting plates are synchronously moved back and forth along the first direction with the transverse plate and can be lifted along the transverse plate, and the grabbing assemblies are arranged on the lifting plates; a press-fitting assembly arranged on the fixed frame, the transverse plate can align the grabbing assemblies with the press-fitting assembly in sequence when the transverse plate moves, the press-fitting assembly includes a servo press and a lifting cylinder arranged at intervals along a second direction, the servo press is used for pushing the grabbing assemblies aligned therewith to move downward along the transverse plate, and the lifting cylinder is connected with the grabbing assemblies aligned therewith and can limit and lift the grabbing assemblies to a first height position; a falling prevention assembly used for limiting other grabbing assemblies not aligned with the press-fitting assembly at the first height position.

[0005] The beneficial effects of the present application are that one servo press can be used for the crimping of multiple rotors, the switching assembly is used to align the rotor grabbing assembly with the servo press in turn, and the servo press is used to press fit multiple rotors in turn. In order to prevent the grabbing assembly from falling along the transverse plate under the action of gravity when the switching assembly switches the grabbing assembly, a lifting cylinder and an anti-falling assembly are provided. The lifting cylinder can be connected with different grabbing assemblies, so as to meet the switching requirement, and the anti-falling assembly is used to prevent other grabbing assemblies from falling under the action of gravity, so as to ensure that all grabbing assemblies can only move downward for press fitting under the action of the servo press.

[0006] Further, the anti-falling assembly comprises an anti-falling track and a follower wheel. The anti-falling track is fixed on the fixed frame. The anti-falling track comprises an upper plate and a lower plate extending along a first direction. An anti-falling groove is formed between the upper plate and the lower plate. A clearance opening is formed in the lower plate corresponding to the position of the servo press. The follower wheel is in one-to-one correspondence with the lifting plate and is rotatably connected to the lifting plate. The follower wheel rolls along the anti-falling groove and can pass through the clearance opening in the vertical direction.

[0007] The anti-falling assembly only needs the low-cost structure of the anti-falling track and the follower wheel to limit the height position of the grabbing assembly. By opening the clearance opening, when the grabbing assembly is aligned with the press assembly, the anti-falling track has released the height position limitation of the grabbing assembly, and the press assembly pushes the grabbing assembly up and down.

[0008] Further, the lifting cylinder and the grabbing assembly are connected through a clamping structure. The clamping structure comprises a connecting block and a clamping block. The connecting block is arranged on the grabbing assembly. A C-shaped sliding groove is formed in the connecting block. The C-shaped sliding groove penetrates the connecting block along the first direction to form two inlets and outlets. The clamping block is fixed to the lower end of the piston rod of the lifting cylinder. The clamping block can be clamped into the C-shaped sliding groove and slide along the C-shaped sliding groove. The structure of the C-shaped sliding groove and the clamping block can quickly clamp and separate the C-shaped sliding groove and the clamping block when the grabbing assembly moves the connecting block along the first direction.

[0009] Further, the C-shaped sliding groove comprises upper and lower limit surfaces arranged in an upper and lower manner. The clamping block is limited between the upper and lower limit surfaces. The upper and lower limit surfaces at the inlets and outlets have inclined portions. The inclined portions form a flared structure at the inlets and outlets. Even if there is a deviation in the Z direction, the clamping block can enter the C-shaped sliding groove from the inlets and outlets due to the flared structure.

[0010] Further, the connecting blocks on the grabbing assemblies in the first height position are located at the same height position, so that the different grabbing assemblies and the lifting cylinders do not need to be adjusted in the Z direction when being connected and separated, and the quick connection and separation of the different grabbing assemblies and the lifting cylinders can be realized, and the machining efficiency is improved.

[0011] Further, the anti-falling assembly further comprises a sensor fixed on the upper plate of the anti-falling track and corresponding to the position of the accommodation opening, and the sensor is used to detect whether the follower wheel is present at the accommodation opening. When the sensor detects the follower wheel, the servo press presses the grabbing assembly aligned therewith downward. In addition to the stroke control of the transverse driving member driving the transverse moving plate to move, the sensor can ensure that the follower wheel and the accommodation opening are aligned, and the problem that the lifting plate cannot be moved downward and is damaged by the servo press is avoided.

[0012] Further, the rotor is provided with two, and the accommodation opening is located at the middle position of the anti-falling track, so that the two lifting plates do not deviate from the anti-falling track during the reciprocating movement in the first direction. The moving distance of the transverse moving plate in the first direction is equal to the distance between the axes of the two follower wheels in the first direction, so as to ensure that the two follower wheels are aligned with the accommodation opening.

[0013] Further, the grabbing assembly comprises a transverse plate, a floating part and a grabbing part, the transverse plate is fixedly connected with the lifting plate, the grabbing part is connected with the transverse plate through the floating part, the pressing head of the servo press is pressed on the transverse plate, and the grabbing part can be lifted relative to the transverse plate while being synchronously lifted with the transverse plate. The floating part is provided, so that the rotor grabbed by the grabbing part is in elastic contact when being in rigid contact with the machine shell, and damage caused by instantaneous rigid contact between the machine shell and the rotor is avoided.

[0014] Further, the grabbing part comprises an inner rod and an outer sleeve sleeved outside the inner rod and coaxially arranged with the inner rod, an adsorption channel is formed between the inner rod and the outer sleeve, a suction nozzle communicating with the adsorption channel is fixed on the outer sleeve, the inner rod is connected with the floating part, and the outer sleeve rotates around the inner rod under the driving of a rotary driving member. The grabbing part can adjust the angle of the rotor through the rotation of the outer sleeve, is suitable for the assembly of different steering gears and rotors, and the universality is improved.

[0015] Further, the floating part comprises a plurality of guide rods fixedly connected with the grabbing part, the upper ends of the guide rods pass through the transverse plate upward and are fixed with limiting plates, the guide rods can slide up and down along the transverse plate, the limiting plates can abut against the transverse plate to limit the downward movement distance of the guide rods, and springs are sleeved on the guide rods between the grabbing part and the transverse plate. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present invention; Figure 2 This is a three-dimensional structural diagram of the pressure mechanism in an embodiment of the present invention; Figure 3 This is a front view of the pressure mechanism in an embodiment of the present invention; Figure 4 This is a schematic diagram of the fall protection component in an embodiment of the present invention; Figure 5 This is a schematic diagram of the snap-fit ​​structure in an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the grabbing component one in an embodiment of the present invention; Figure 7 This is a schematic diagram of the floating part in an embodiment of the present invention; Figure 8 This is a cross-sectional view of the first grasping component in an embodiment of the present invention; Figure 9 This is a schematic diagram of the pressure mechanism after the gripping component is removed in an embodiment of the present invention; Figure 10 This is a schematic diagram of the gripping part structure of gripping component two in an embodiment of the present invention.

[0017] In the picture: 100. Pressure mechanism; 1. Press assembly; 11. Servo press; 12. Lifting cylinder; 121. Piston rod; 2. Fall protection components; 21. Fall protection track; 21a. Fall protection groove; 211. Upper plate; 212. Lower plate; 2121. Clearance opening; 21211. Inclined section; 22. Follower wheel; 23. Sensor; 3. Switching components; 31. Horizontal sliding plate; 311. Vertical guide rail; 32. Lifting plate; 32a. Lifting plate one; 32b. Lifting plate two; 33. Horizontal sliding drive component; 4. Gripping Components; 4a. Gripping Component One; 4b. Gripping Component Two; 41. Horizontal Plate; 42. Gripping Part; 421. Inner Rod; 422. Outer Arm; 423. Adsorption Channel; 424. Connecting Plate; 425. Rotation Drive Component; 426. Gripping Drive Component; 427. Gripper; 43. Floating Part; 431. Guide Rod; 432. Limiting Plate; 433. Spring; 5. Snap-fit ​​structure; 51. Connecting block; 511. C-shaped slide groove; 5111. Inclined part; 52. Locking block; 200. Fixture; 201. Horizontal guide rail; 300. Vehicles; 400. Conveyor line. Detailed Implementation

[0018] The preferred embodiments of the present application are described in detail below with reference to the accompanying drawings, so that the advantages and features of the present application can be more easily understood by those skilled in the art, and the scope of protection of the present application can be more clearly defined.

[0019] In the following drawings, the first direction is the X direction in the drawings, the second direction is the Y direction in the drawings, and the vertical direction is the Z direction in the drawings.

[0020] The present application discloses a pressing device for a steering gear housing and a rotor of an automobile, the rotor comprises an upper rotor and a lower rotor, and the housing is provided with a mounting groove.

[0021] Referring to FIGS. 1 and 2, Figure 1 As shown in the drawings, the pressing device comprises a carrier 300, a fixing frame 200 and a pressure mechanism 100, the carrier 300 is used for fixing the housing, the fixing frame 200 is located on one side of the carrier 300 in the Y direction, and the pressure mechanism 100 is arranged on the fixing frame 200 and above the housing, and the pressure mechanism 100 is used for pressing the lower rotor and the upper rotor into a mounting groove in sequence.

[0022] Referring to FIGS. 1 and 2, Figure 2 and FIGS. 3 and 4, Figure 3 As shown in the drawings, the pressure mechanism 100 comprises a pressing assembly 1, a falling prevention assembly 2, a switching assembly 3 and a grabbing assembly 4.

[0023] The grabbing assembly 4 and the rotor are one-to-one corresponding, and the grabbing assembly 4 is arranged at intervals along the X direction, for example, two grabbing assemblies 4 are arranged, and the two grabbing assemblies 4 are respectively a first grabbing assembly 4a for grabbing the upper rotor and a second grabbing assembly 4b for grabbing the lower rotor.

[0024] The pressing assembly 1 is fixed on the fixing frame 200, and the switching assembly 3 is used for driving the two grabbing assemblies 4 to move back and forth along the X direction synchronously so that the two grabbing assemblies 4 are aligned with the pressing assembly 1 in sequence. The switching assembly 3 comprises a transverse plate 31 and a lifting plate 32 corresponding to the grabbing assembly 4, the lifting plate 32 moves transversely along the fixing frame 200 synchronously with the transverse plate 31, and the lifting plate 32 can be lifted along the transverse plate 31, and the grabbing assembly 4 is arranged on the lifting plate 32.

[0025] The pressing assembly 1 comprises a servo press 11 and a lifting cylinder 12 arranged at intervals along the Y direction, the servo press 11 is used for pushing the grabbing assembly 4 aligned therewith to move downward along the transverse plate 31, so as to press the rotor grabbed by the grabbing assembly 4 into the housing, and the pressing head of the servo press 11 only abuts against the grabbing assembly 4 aligned therewith, and the two are not fixed. The lifting cylinder 12 is clamped with the grabbing assembly 4 aligned therewith, and the lifting cylinder 12 can limit the grabbing assembly 4 at a first height position before the servo press 11 pushes the grabbing assembly 4 aligned therewith, and on the other hand, the lifting cylinder 12 can lift the grabbing assembly 4 moved downward to the initial first height position.

[0026] The fall arrestor 2 is used to confine another gripping component 4, which is not aligned with the pressing component 1, to a first height position, preventing this gripping component 4 from falling under the influence of gravity. The gripping component 4 is positioned at the first height position. When the switching component 3 drives the gripping component 4 to a position aligned with the servo press 11 and the lifting cylinder 12, the gripping component 4 and the lifting cylinder 12 directly engage and reach the working range of the servo press 11.

[0027] Compared to the existing technology where the pressing component 1 and the rotor correspond one-to-one, pressing two rotors requires a pressing device with two servo presses 11. In this embodiment, one servo press 11 can be used to press multiple rotors. By switching component 3, the gripping component 4 holding the rotor is aligned with the servo press 11 in sequence, allowing the servo press 11 to press multiple rotors in sequence. The transverse plate 31 does not have a driving component to drive the lifting plate 32 to rise and fall. To prevent the gripping component 4 from falling along the transverse plate 31 under gravity when the switching component 3 switches gripping components 4, a lifting cylinder 12 and an anti-fall component 2 are provided. The lifting cylinder 12 can engage with different gripping components 4, thus meeting the switching requirements. The anti-fall component 2 is used to prevent another gripping component 4 from falling, ensuring that all gripping components 4 can only move down for pressing when pushed by the servo press 11.

[0028] In one embodiment, when the housing needs to press three rotors, three lifting plates 32 and gripping components 4 are provided, which can also enable one servo press 11 to press three rotors.

[0029] See appendix Figure 4 and attached Figure 7 As shown, the fall arrestor 2 includes a fall arrestor track 21 and a follower wheel 22. The fall arrestor track 21 is fixed on the mounting frame 200. The fall arrestor track 21 includes an upper plate 211 and a lower plate 212 extending in the X direction. A fall arrestor groove 21a is formed between the upper plate 211 and the lower plate 212. A clearance opening 2121 is provided through the lower plate 212 at the position corresponding to the servo press 11. The follower wheel 22 corresponds to and is rotatably connected to the lifting plate 32. The follower wheel 22 moves synchronously with the lifting plate 32 and rolls within the fall arrestor groove 21a. The diameter of the follower wheel 22 is smaller than the width of the clearance opening 2121 in the X direction, ensuring that the follower wheel 22 can enter and exit the fall arrestor groove 21a through the clearance opening 2121.

[0030] When the follower wheel 22 and the lower plate 212 abut, the lower plate 212 limits the position of the follower wheel 22, preventing it from falling. This, in turn, prevents the lifting plate 32 and the gripping assembly 4 on the lifting plate 32 from falling under gravity. At this time, the gripping assembly 4 is at the first height position, above the housing. When the follower wheel 22 moves to the position corresponding to the clearance port 2121, the servo press 11 and the gripping assembly 4 on the lifting plate 32 with the follower wheel 22 are aligned. The lifting cylinder 12 engages with the gripping assembly 4. At this time, the anti-fall rail 21 releases the restriction on the follower wheel 22, allowing it to move downward from the clearance port 2121. When the pressure head of the servo press 11 moves down and presses against the gripping assembly 4, the gripping assembly 4 can move downward to press the rotor and the housing together. Meanwhile, the other follower wheel 22 abuts against the lower plate 212, ensuring that the other lifting plate 32 and the gripping assembly 4 on it will not fall.

[0031] In this embodiment, the fall arrestor 2 only requires a low-cost structure such as the fall arrestor rail 21 and the follower wheel 22 to achieve the height position limitation of the gripping component 4. Furthermore, by opening the clearance port 2121, when the gripping component 4 is aligned with the pressing component 1, the fall arrestor rail 21 has already released the height position limitation of the gripping component 4, and the pressing component 1 pushes the gripping component 4 to rise and fall.

[0032] See appendix Figure 4 As shown, the upper surface of the lower plate 212 has an inclined section 21211 near the relief opening 2121. The inclined section 21211 is inclined upward from near the relief opening 2121 to away from the relief opening 2121, thereby guiding the follower wheel 22 entering the anti-fall groove 21a.

[0033] The clearance opening 2121 is located in the middle of the fall arrest rail 21. When multiple lifting plates 32 move back and forth along the X direction, the height of the lifting plates 32 located on both sides of the clearance opening 2121 in the X direction can be limited by the fall arrest rail 21, so as to prevent the lifting plates 32 on both sides of the clearance opening 2121 from falling and to meet the reciprocating movement requirements of multiple lifting plates 32 relative to the transverse moving plate 31.

[0034] The fall arrestor assembly 2 also includes a sensor 23, which is fixed at the position corresponding to the upper plate 211 of the fall arrestor track 21 and the clearance opening 2121. The sensor 23 is used to detect whether there is a follower wheel 22 at the clearance opening 2121. When there is a follower wheel 22 at the clearance opening 2121, it indicates that the gripping assembly 4 and the pressing assembly 1 are aligned. At this time, the pressure head of the servo press 11 can move down to push the gripping assembly 4 down. For example, the sensor 23 is an inductive proximity switch. When the follower wheel 22 is detected, it sends a signal to the controller.

[0035] When the gripping component 4 is at the first height position, the piston rod 121 of the lifting cylinder 12 is in the retracted state, while the pressure of the servo press 11 is relatively large. Therefore, when the servo press 11 pushes the corresponding gripping component 4 downward, the gripping component 4 can pull the piston rod 121 of the lifting cylinder 12, which is engaged with it, downward. After the rotor is pressed into place, the servo press 11 resets and no longer applies pressure to the corresponding gripping component 4. The lifting cylinder 12 is vented and pulls the piston rod 121 upward to reset, thereby pulling the gripping component 4, which is engaged with it, upward until the gripping component 4 moves to the first height position. At this time, the follower wheel 22 and the anti-fall groove 21a are aligned in the X direction. When the transverse plate 31 moves laterally, the follower wheel 22 can directly enter the anti-fall groove 21a.

[0036] See appendix Figure 5 and attached Figure 7 As shown, the lifting cylinder 12 and the gripping assembly 4 are connected by a snap-fit ​​structure 5. The gripping assembly 4 includes a horizontal plate 41, which is fixed to the lifting plate 32 and extends in the horizontal direction. The pressure head of the servo press 11 presses against the horizontal plate 41 and presses down on the entire gripping assembly 4.

[0037] The snap-fit ​​structure 5 includes a connecting block 51 fixed to the upper surface of the horizontal plate 41. The connecting block 51 has a C-shaped groove 511, which extends through the connecting block 51 in the X direction to form two inlets and outlets. The snap-fit ​​structure 5 also includes a locking block 52 fixed to the lower end of the piston rod 121 of the lifting cylinder 12. The locking block 52 can engage with the C-shaped groove 511 and slide along the C-shaped groove 511. The locking block 52 enters and exits the C-shaped groove 511 from the inlet and outlet.

[0038] The C-shaped slide 511 includes an upper limit surface and a lower limit surface spaced apart vertically. The upper limit surface has a channel through which the piston rod of the lifting cylinder 12 passes. When the locking block 52 enters the C-shaped slide 511 from the inlet / outlet, the locking block 52 engages with the C-shaped slide 511. Due to the limitation of the upper and lower limit surfaces, the locking block 52 cannot disengage from the C-shaped slide 511 in the Z-direction. At this time, the lifting cylinder 12 can pull the engaging connecting block 51 (corresponding gripping component 4) upwards to reset. Because the C-shaped slide 511 has inlets and outlets at both ends in the X-direction, when the transverse plate 31 moves along the X-direction, the locking block 52 can slide out of the C-shaped slide 511 of one connecting block 51 and enter the C-shaped slide 511 of the other connecting block 51. When both gripping components 4 are at the first height position, the connecting blocks 51 of the two gripping components 4 are set at the same height, ensuring that when the two gripping components 4 move laterally, they can engage with the locking block 52 respectively, without needing to adjust their position in the Z-direction.

[0039] The length of the C-shaped slide 511 in the X direction is greater than the width of the clearance opening 2121 in the X direction. This ensures that the locking block 52 has slid into the C-shaped slide 511 before the follower wheel 22 is aligned with the clearance hole. This ensures that the gripping component 4 is engaged with the locking block 52 on the lifting cylinder 12 before it is disengaged from the anti-fall groove 21a, thus preventing the gripping component 4 from falling.

[0040] In one embodiment, the upper and lower limit surfaces at the inlet and outlet have inclined portions 5111, with the inclined portions 5111 on the upper and lower limit surfaces tilting in opposite directions, forming a flared structure at the inlet and outlet. In this case, even if the locking block 52 and the connecting block 51 are offset in the Z direction, the flared structure facilitates the entry of the locking block 52 from the inlet and outlet into the C-shaped groove 511.

[0041] See appendix Figure 9 As shown, a vertical guide rail 311 corresponding to the lifting plate 32 is fixed on the transverse plate 31. A vertical slider is fixed on the lifting plate 32, which is sleeved on the vertical guide rail 311 and slides along the vertical guide rail 311. The vertical guide rail 311 guides the sliding of the lifting plate 32 and, in conjunction with the vertical slider, prevents the vertical slider from disengaging from the vertical guide rail 311 in the Y and X directions. In other words, it limits the position of the lifting plate 32 relative to the transverse plate 31 in the Y and X directions, preventing the lifting plate 32 from moving in the Y and X directions and ensuring that the lifting plate 32 can only move up and down relative to the transverse plate 31 in the Z direction.

[0042] A horizontal guide rail 201 extending in the X direction is fixed on the fixed frame 200, and a horizontal slider is fixed on the transverse plate 31, which is sleeved on the horizontal guide rail 201 and slides along the horizontal guide rail 201. The horizontal guide rail 201 guides the sliding of the transverse plate 31 and cooperates with the horizontal slider to ensure that the transverse plate 31 can only slide relative to the fixed frame 200 in the X direction.

[0043] The switching component 3 includes a lateral drive 33, which is fixed to the mounting bracket 200 and is used to drive the lateral plate 31 to slide along the horizontal guide rail 201. For example, the lateral drive 33 is a lateral cylinder.

[0044] The lateral drive 33 drives the lateral plate 31 to move a distance equal to the distance between the axes of the two follower wheels 22 in the X direction. Thus, when the lateral drive 33 drives the lateral plate 31, the two follower wheels 22 alternately align with the clearance opening 2121. The length of the fall-prevention track 21 in the X direction is greater than twice the distance between the axes of the two follower wheels 22 in the X direction. The length of the fall-prevention track 21 must meet the rolling requirements of the follower wheels 22, ensuring that the follower wheels 22 do not slip off from either end of the fall-prevention track 21 during movement. In other words, the fall-prevention track 21 provides a fall-prevention effect during the movement of the follower wheels 22.

[0045] The two gripping components 4 are gripping component one 4a and gripping component two 4b. Gripping component one 4a grips the lower rotor (the lower rotor and the rotor sensor are fixed and connected as a whole), and gripping component two 4b grips the upper rotor. Gripping component one 4a is mounted on lifting plate one 32a, and a follower wheel one is rotatably connected to lifting plate one 32a. Gripping component one 4a includes a connecting block one. Gripping component two 4b is mounted on lifting plate two 32b, and a follower wheel two is rotatably connected to lifting plate two 32b. Gripping component two 4b includes a connecting block two. When the pressing device is working, the transverse drive 33 first drives the transverse plate 31 to move to align the gripping component 4a and the pressing component 1. At this time, the follower wheel 1 and the clearance port 2121 are aligned, but the locking block 52 is locked into the C-shaped slide groove 511 of the connecting block 1, so the gripping component 4a will not move down. At the same time, the follower wheel 2 is located in the anti-fall groove 21a, and the gripping component 4b is displaced to the first height position, so it will not fall.

[0046] The pressure head of the servo press 11 moves downward, pushing the gripping assembly 4a and the lifting plate 32a downward synchronously until the lower rotor on the gripping assembly 4a is pressed onto the machine housing, and the gripping assembly 4a releases its fixation on the lower rotor. The lifting cylinder 12 pulls the gripping assembly 4a and the lifting plate 32a upward synchronously via the locking block 52, restoring them to the first height position. Next, the transverse drive 33 drives the transverse plate 31 to move to align the gripping assembly 4b and the pressing assembly 1. At this time, the follower wheel 2 and the clearance port 2121 are aligned, but the locking block 52 is engaged in the C-shaped slide groove 511 of the connecting block 2, so the gripping assembly 4b will not move downward. At the same time, the follower wheel 1 is located in the anti-fall groove 21a, and the gripping assembly 4a is displaced to the first height position, preventing it from falling.

[0047] The pressure head of the servo press 11 moves down, pushing the gripping component 2 4b and the lifting plate 2 32b to move down synchronously until the upper rotor on the gripping component 2 4b is pressed onto the machine housing. The gripping component 2 4b then releases its fixation on the upper rotor, completing the assembly of the two rotors and the machine housing.

[0048] See appendix Figure 6 As shown, the gripping assembly 4 also includes a gripping part 42 located below the horizontal plate 41. The gripping part 42 moves up and down synchronously with the horizontal plate 41 and is used to grip the rotor. The gripping part 42 can fix the rotor.

[0049] In one embodiment, the gripping assembly 4 further includes a floating part 43, and the gripping part 42 is connected to the horizontal plate 41 through the floating part 43. In this case, the gripping part 42 can rise and fall relative to the horizontal plate 41 while rising and falling synchronously with the horizontal plate 41. In this way, when the rotor gripped by the gripping part 42 comes into contact with the housing, it is an elastic contact, avoiding damage caused by instantaneous rigid contact between the housing and the rotor.

[0050] See appendix Figure 7 and attached Figure 8As shown, the floating part 43 includes multiple guide rods 431 fixedly connected to the gripping part 42. The upper end of the guide rod 431 passes upward through the horizontal plate 41 and is fixed with a limiting plate 432. The guide rod 431 can slide up and down along the horizontal plate 41. The limiting plate 432 can abut against the horizontal plate 41 to limit the downward movement distance of the guide rod 431 and prevent the gripping part 42 and the horizontal plate 41 from separating. A spring 433 is sleeved on the guide rod 431 located between the gripping part 42 and the horizontal plate 41. When the gripping part 42 abuts against the housing and moves upward relative to the horizontal plate 41 under the push of the housing, the spring 433 is continuously compressed to store force for the gripping part 42 to reset.

[0051] In one embodiment, the gripping part 42 of the gripping component 4a uses vacuum adsorption to attract the rotor. In this case, the gripping part 42 includes a suction nozzle and an adsorption channel 423 connected to the suction nozzle. When the adsorption channel 423 is evacuated by an external vacuum generator, the suction nozzle adsorbs the rotor.

[0052] Because the lower rotor gripped by the gripping assembly 4a needs to be angled to align with the machine housing, the gripping part 42 of the gripping assembly 4a can also drive the lower rotor to rotate. (See attached diagram) Figure 8 As shown, the gripping part 42 of the gripping assembly 4a includes an inner rod 421 and an outer sleeve 422 that is sleeved outside the inner rod 421 and coaxial with the inner rod 421. An adsorption channel 423 is formed between the inner rod 421 and the outer sleeve 422. The inner rod 421 is fixed to a connecting plate 424 on which a guide rod 431 is fixed. The suction nozzle is fixed to the outer sleeve 422, and the outer sleeve 422 can rotate around the inner rod 421. At this time, when the outer sleeve 422 rotates, the suction nozzle can still adsorb the lower rotor, and because the suction nozzle and the outer sleeve 422 rotate synchronously, the angle of the lower rotor can be adjusted.

[0053] The gripping part 42 of the gripping assembly 4a also includes a rotary drive 425, which is fixed to a fixed plate that is fixed to the inner rod 421. The rotary drive 425 drives the outer sleeve 422 to rotate through a transmission structure. For example, the rotary drive 425 is a motor located on one side of the inner rod 421, with a drive gear fixed to the motor's rotation shaft, and a driven gear meshing with the drive gear fixed on the outer sleeve 422.

[0054] The gripping part 42 on the gripping assembly 4a can adjust the angle of the lower rotor and can also be used in the assembly of housings and rotors of different steering gears, thus improving versatility.

[0055] The upper rotor typically does not require angle adjustment; therefore, the gripping part 42 of gripping assembly 2 4b uses grippers 427 to hold the upper rotor. (See attached diagram) Figure 10As shown, the gripping part 42 of the gripping assembly 4b includes a connecting plate 424 with a guide rod 431 fixed thereon. A gripping drive member 426 is fixed on the connecting plate 424. The gripping drive member 426 drives two grippers 427 to move relative to or away from each other to grip the upper rotor. In order to position the upper rotor, the connecting plate 424 of the gripping assembly 4b is also provided with a number of positioning pins, which can be inserted into the positioning holes of the upper rotor.

[0056] The gripping part 42 of the gripping component 4 is selected and set according to actual needs. It only needs to be able to grip and release the rotor. It can be determined whether the rotor angle needs to be rotated according to the pressing requirements.

[0057] In one embodiment, see Appendix Figure 1 As shown, the carrier 300 is fixed on the conveyor line 400, and the conveyor line 400 conveys the carrier 300 along the X direction. When the housing and rotor on a carrier 300 are pressed, they can be moved to the next station by the conveyor line 400. The next housing to be pressed is conveyed by the conveyor line 400 to the working area of ​​the pressure mechanism 100 for processing.

[0058] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A pressing device for a car steering gear housing and rotors, used to press multiple rotors into the housing, characterized in that: The pressing device includes a fixed frame, and a pressure mechanism located above the housing is disposed on the fixed frame. The pressure mechanism includes: A gripping component, wherein the gripping component corresponds one-to-one with the rotor, and the gripping component is spaced apart along a first direction and is used to grip the corresponding rotor; A switching component includes a transverse plate and a lifting plate corresponding to the gripping component. The lifting plate and the transverse plate move synchronously and reciprocate along a first direction and can rise and fall along the transverse plate. The gripping component is disposed on the lifting plate. A pressing assembly is mounted on the fixed frame. When the transverse plate moves, it can align the gripping assembly with the pressing assembly in sequence. The pressing assembly includes a servo press and a lifting cylinder spaced apart along a second direction. The servo press is used to push the gripping assembly it is aligned with to move down along the transverse plate. The lifting cylinder engages with the gripping assembly it is aligned with and can limit and lift the gripping assembly to a first height position. A fall arrestor assembly for limiting any other gripping components not aligned with the press-fit assembly to a first height position.

2. The pressing device according to claim 1, characterized in that: The fall protection assembly includes a fall protection track and a follower wheel. The fall protection track is fixed on a fixed frame. The fall protection track includes an upper plate and a lower plate extending along a first direction. A fall protection groove is formed between the upper plate and the lower plate. A clearance opening is provided through the lower plate at a position corresponding to the servo press. The follower wheel and the lifting plate are in one-to-one correspondence and are rotatably connected to the lifting plate. The follower wheel rolls along the anti-fall groove and can pass through the clearance opening in the vertical direction.

3. The pressing device according to claim 1, characterized in that: The lifting cylinder and the gripping assembly are connected by a snap-fit ​​structure, which includes a connecting block and a locking block. The connecting block is disposed on the gripping assembly and has a C-shaped groove. The C-shaped groove passes through the connecting block along a first direction to form two inlets and outlets. The locking block is fixed to the lower end of the piston rod of the lifting cylinder and can be engaged in the C-shaped groove and slide along the C-shaped groove.

4. The pressing device according to claim 3, characterized in that: The C-shaped chute includes an upper limit surface and a lower limit surface that are spaced apart vertically. The locking block is limited between the upper limit surface and the lower limit surface. The upper limit surface and the lower limit surface at the inlet and outlet have inclined portions, and the inclined portions form a flared structure at the inlet and outlet.

5. The pressing device according to claim 3, characterized in that: The connecting blocks on all the gripping components at the first height position are at the same height position.

6. The pressing device according to claim 2, characterized in that: The fall arrestor also includes a sensor, which is fixed on the upper plate of the fall arrestor track and corresponds to the position of the clearance opening. The sensor is used to detect whether the follower wheel is at the clearance opening. When the sensor detects the follower wheel, the servo press presses down on the gripping component aligned with it.

7. The pressing device according to claim 2, characterized in that: Two rotors are provided, and the clearance opening is located in the middle of the anti-fall track. Each time the transverse plate moves a distance in the first direction, it is equal to the distance between the axes of the two follower wheels in the first direction.

8. The pressing device according to any one of claims 1-7, characterized in that: The gripping assembly includes a horizontal plate, a floating part, and a gripping part. The horizontal plate and the lifting plate are fixedly connected. The gripping part is connected to the horizontal plate through the floating part. The pressure head of the servo press is pressed against the horizontal plate. The gripping part can move up and down relative to the horizontal plate while moving up and down synchronously with the horizontal plate.

9. The pressing device according to claim 8, characterized in that: The gripping part includes an inner rod and an outer sleeve that is sleeved outside the inner rod and coaxially arranged with the inner rod. An adsorption channel is formed between the inner rod and the outer sleeve. A suction nozzle that communicates with the adsorption channel is fixed on the outer sleeve. The inner rod is connected to the floating part. The outer sleeve rotates around the inner rod under the drive of a rotary drive component.

10. The pressing device according to claim 8, characterized in that: The floating part includes a plurality of guide rods fixedly connected to the gripping part. The upper end of the guide rod passes upward through the horizontal plate and is fixed with a limiting plate. The guide rod can slide up and down along the horizontal plate. The limiting plate can abut against the horizontal plate to limit the downward movement distance of the guide rod. A spring is sleeved on the guide rod located between the gripping part and the horizontal plate.

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