Pressing device for automobile steering gear housing and rotor

Abstract

The application discloses a kind of press fitting devices of automobile steering gear housing and rotor, including press fitting assembly, anti-falling assembly, switching assembly and grabbing assembly.Grabbing assembly and rotor one-to-one correspondence, grabbing assembly is used to grab corresponding rotor.Switching assembly is used to drive grabbing assembly synchronous reciprocating movement along first direction to make two grabbing assemblies sequentially and press fitting assembly alignment.Press fitting assembly includes servo press and lifting cylinder spaced along second direction, servo press is used to push its alignment grabbing assembly down, lifting cylinder and the clamping of grabbing assembly alignment with it, can limit and lift grabbing assembly to first height position.Anti-falling assembly is used to limit another grabbing assembly without alignment with press fitting assembly at first height position, avoid this grabbing assembly under the action of gravity falling.Press fitting device only needs a servo press, can realize the subsequent press fitting of multiple rotor, saves cost, can realize the rapid press fitting of housing and rotor.

Description

Technical Field

[0001] This invention relates to the field of robotic workstations, and more particularly to a press-fitting device for automotive steering gear housings and rotors. Background Technology

[0002] Automotive steering systems consist of a housing and a rotor. The assembly of the rotor and housing is mostly done using a pressing method, where mechanical force presses the rotor into the housing to achieve rotor-housing installation. Two rotors, an upper rotor and a lower rotor, need to be pressed into one mounting slot in the housing. Typically, a servo press first presses the lower rotor into the mounting slot, then the housing moves to the next servo press, which presses the upper rotor into the mounting slot. In other words, the pressing of the housing and rotor requires two stations and two servo presses, each pressing one rotor separately. However, servo presses are expensive, which increases the company's costs. Summary of the Invention

[0003] To overcome the above-mentioned shortcomings, the purpose of this invention is to provide a press-fitting device for automotive steering gear housings and rotors, which can achieve sequential press-fitting of multiple rotors with only one servo press, saving costs and enabling rapid press-fitting of housings and rotors.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is: a pressing device for a car steering gear housing and rotors, used to press multiple rotors into the housing, the pressing device including a fixing frame, and a pressure mechanism located above the housing on the fixing frame, the pressure mechanism including:

[0005] 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;

[0006] A switching component includes a transverse plate and a lifting plate corresponding to the gripping component. The lifting plate moves synchronously with the transverse plate along a first direction and can move up and down along the transverse plate. The gripping component is disposed on the lifting plate.

[0007] 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.

[0008] A fall arrestor assembly for limiting any other gripping components not aligned with the press-fit assembly to a first height position.

[0009] The beneficial effects of this invention are as follows: one servo press can be used for pressing multiple rotors. By using a switching component, the gripping components holding rotors are aligned sequentially with the servo press, allowing the servo press to press multiple rotors sequentially. To prevent the gripping components from falling along the transverse plate under gravity when the switching component is switching gripping components, a lifting cylinder and an anti-fall component are provided. The lifting cylinder can engage with different gripping components, thus meeting the switching requirements, while the anti-fall component is used to prevent other gripping components from falling under gravity, ensuring that all gripping components can only move down for pressing under the push of the servo press.

[0010] Furthermore, the fall protection assembly includes a fall protection track and a follower wheel. The fall protection track is fixed on a fixed frame and 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 corresponding one-to-one and rotatably connected to the lifting plate. The follower wheel rolls along the fall protection groove and can pass through the clearance opening in the vertical direction.

[0011] The fall arrestor only requires a low-cost structure of fall arrestor rails and follower wheels to limit the height position of the gripping component. By opening a clearance opening, when the gripping component is aligned with the pressing component, the fall arrestor rail has already released the height position limitation of the gripping component, and the pressing component pushes the gripping component to rise and fall.

[0012] Furthermore, the lifting cylinder and the gripping assembly are engaged via a snap-fit ​​structure. This snap-fit ​​structure includes a connecting block and a locking block. The connecting block is mounted on the gripping assembly and has a C-shaped groove extending through it in a first direction, forming two inlets and outlets. The locking block is fixed to the lower end of the piston rod of the lifting cylinder and can engage with and slide along the C-shaped groove. This structure of the C-shaped groove and locking block allows for rapid engagement and disengagement of the C-shaped groove and locking block when the gripping assembly moves the connecting block in the first direction.

[0013] Furthermore, the C-shaped groove includes an upper limit surface and a lower limit surface spaced apart vertically. The locking block is constrained 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, which form a flared structure at the inlet and outlet. Even if the locking block and the connecting block are offset in the Z-direction, the flared structure facilitates the locking block's entry into the C-shaped groove from the inlet and outlet.

[0014] Furthermore, since the connecting blocks on the gripping components at the first height position are at the same height position, when different gripping components and lifting cylinders engage and disengage, neither needs to be adjusted in the Z direction, which enables rapid engagement and disengagement of different gripping components and lifting cylinders, thus improving processing efficiency.

[0015] Furthermore, the fall protection assembly also includes a sensor fixed to the upper plate of the fall protection track and corresponding to the position of the clearance opening. The sensor detects whether the follower wheel is present at the clearance opening. When the sensor detects the follower wheel, the servo press presses down on the gripping assembly aligned with it. In addition to controlling the stroke of the traverse drive component that moves the traverse plate, adding a sensor ensures that the follower wheel and the clearance opening are aligned, preventing the lifting plate from being damaged by the servo press due to its inability to descend.

[0016] Furthermore, two rotors are provided, and the clearance opening is located in the middle of the anti-fall track. In this case, the two lifting plates will never leave the anti-fall track during their reciprocating movement in the first direction. 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, thus ensuring that the two follower wheels are aligned with the clearance opening.

[0017] Furthermore, 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 presses against the horizontal plate. The gripping part can move up and down relative to the horizontal plate while moving synchronously with it. The floating part ensures that the rotor gripped by the gripping part makes elastic contact with the machine housing upon initial contact, avoiding damage caused by instantaneous rigid contact between the machine housing and the rotor.

[0018] Furthermore, the gripping part includes an inner rod and an outer sleeve fitted over the inner rod and coaxially arranged with it. 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 to the floating part, and the outer sleeve rotates around the inner rod under the drive of a rotary drive component. Because the gripping part can adjust the rotor angle through the rotation of the outer sleeve, it is suitable for assembling different steering gear housings and rotors, improving versatility.

[0019] Furthermore, 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. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present invention;

[0021] Figure 2 This is a three-dimensional structural diagram of the pressure mechanism in an embodiment of the present invention;

[0022] Figure 3 This is a front view of the pressure mechanism in an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the anti-fall component in an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the snap-fit ​​structure in an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the structure of the grabbing component one in an embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of the floating part in an embodiment of the present invention;

[0027] Figure 8 This is a cross-sectional view of the first grasping component in an embodiment of the present invention;

[0028] Figure 9 This is a schematic diagram of the pressure mechanism after the gripping component is removed in an embodiment of the present invention;

[0029] Figure 10 This is a schematic diagram of the gripping part structure of gripping component two in an embodiment of the present invention.

[0030] In the picture:

[0031] 100. Pressure mechanism;

[0032] 1. Press assembly; 11. Servo press; 12. Lifting cylinder; 121. Piston rod;

[0033] 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;

[0034] 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;

[0035] 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;

[0036] 5. Snap-fit ​​structure; 51. Connecting block; 511. C-shaped groove; 5111. Inclined part; 52. Locking block;

[0037] 200. Fixture; 201. Horizontal guide rail;

[0038] 300. Vehicles;

[0039] 400. Conveyor line. Detailed Implementation

[0040] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention.

[0041] In the figures below, the first direction is the X direction, the second direction is the Y direction, and the vertical direction is the Z direction.

[0042] The present invention relates to a pressing device for a car steering gear housing and a rotor, wherein the rotor includes an upper rotor and a lower rotor, and the housing is provided with a mounting groove.

[0043] See appendix Figure 1 As shown, the pressing device includes a carrier 300, a fixing frame 200 and a pressure mechanism 100. The carrier 300 is used to fix the machine housing. The fixing frame 200 is located on one side of the carrier 300 in the Y direction. The pressure mechanism 100 is set on the fixing frame 200 and located above the machine housing. The pressure mechanism 100 is used to press the lower rotor and the upper rotor into a mounting groove one after the other.

[0044] See appendix Figure 2 and attached Figure 3 As shown, the pressure mechanism 100 includes a pressing assembly 1, a fall protection assembly 2, a switching assembly 3, and a gripping assembly 4.

[0045] The number of gripping components 4 corresponds one-to-one with the number of rotors. The gripping components 4 are spaced apart along the X direction. For example, there are two gripping components 4, namely the first gripping component 4a for gripping the upper rotor and the second gripping component 4b for gripping the lower rotor.

[0046] The pressing assembly 1 is fixed on the fixed frame 200. The switching assembly 3 is used to drive the two gripping assemblies 4 to reciprocate synchronously along the X direction so that the two gripping assemblies 4 are aligned with the pressing assembly 1 in sequence. The switching assembly 3 includes a transverse plate 31 and a lifting plate 32 corresponding to the gripping assembly 4. The lifting plate 32 moves laterally along the fixed frame 200 synchronously with the transverse plate 31, and the lifting plate 32 can move up and down along the transverse plate 31. The gripping assembly 4 is mounted on the lifting plate 32.

[0047] The pressing assembly 1 includes a servo press 11 and a lifting cylinder 12 spaced apart along the Y direction. The servo press 11 pushes the aligned gripping assembly 4 downward along the transverse plate 31 to press the rotor gripped on the gripping assembly 4 into the machine housing. The pressure head of the servo press 11 only abuts against the aligned gripping assembly 4, and the two are not fixed. The lifting cylinder 12 engages with the aligned gripping assembly 4. The lifting cylinder 12 can, on the one hand, limit the gripping assembly 4 to a first height position before the servo press 11 pushes the aligned gripping assembly 4, and on the other hand, lift the downward-moving gripping assembly 4 to the initial first height position.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] See appendix Figure 4 and attached Figure 7As 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] See appendix Figure 7 and attached Figure 8 As 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.

[0073] 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.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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 10 As 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.

[0078] 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.

[0079] 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.

[0080] 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 is provided, which is used to limit all other gripping components that are not aligned with the pressing assembly to a first height position. The fall arrestor assembly includes a fall arrestor track and a follower wheel. The fall arrestor track is fixed on a fixed frame and includes an upper plate and a lower plate extending in a first direction. A fall arrestor 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 corresponds one-to-one with the lifting plate and is rotatably connected to the lifting plate. The follower wheel rolls along the fall arrestor groove and can pass through the clearance opening in a vertical direction. The fall arrestor assembly 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 there is a follower wheel at the clearance opening. When the sensor detects the follower wheel, the servo press presses down to press the gripping component aligned with it.

2. 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.

3. The pressing device according to claim 2, 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.

4. The pressing device according to claim 2, characterized in that: The connecting blocks on all the gripping components at the first height position are at the same height position.

5. The pressing device according to claim 1, 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.

6. The pressing device according to any one of claims 1-5, 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.

7. The pressing device according to claim 6, 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.

8. The pressing device according to claim 6, 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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