A press-fitting integrated assembly for rack tensioner machining

Abstract

The application discloses a press-fitting integrated assembly for rack tensioner machining, and relates to the technical field of tensioner assembly machining, which comprises a lower rack, a dividing turntable rotatably connected to the upper portion of the lower rack, a turntable tool fixing plate assembled to the outer portion of the dividing turntable, a guide pillar structure located above the turntable tool fixing plate, a guide pillar module assembled to the upper portion of the lower rack, the guide pillar module comprising a cylinder clamping jaw one and a cylinder clamping jaw two, a process jacking assembly arranged below the guide pillar module, the process jacking assembly comprising a wedge-shaped block, the independent action of the newly-added tool support seat jacking the tool, the tool being slightly jacked from the dividing turntable before assembly, the tool being completely separated from the turntable running gap and vibration influence, the assembly of the spring, the guide column, the guide pillar and the rack being completed in the suspended state, the part deviation problem caused by the traditional fixed tool due to the turntable vibration being solved, the coaxiality of the guide pillar and the shell being effectively improved, and the adverse rate such as partial load press-fitting and part jamming being reduced.

Description

Technical Field

[0001] This invention relates to the field of tensioner assembly and processing technology, specifically to a press-fit integrated assembly for processing a toothed tensioner. Background Technology

[0002] The rack tensioner is a core component of the engine chain drive system, primarily used to maintain chain tension and eliminate transmission backlash. Its assembly accuracy directly determines the engine's operational stability and service life. The industry commonly uses multi-station rotary automated assembly equipment to complete the entire assembly process of the rack tensioner: the equipment uses an indexing rotary table as the transfer carrier, sequentially completing manual loading and unloading, one-way valve press-fitting, airtightness testing, guide post assembly assembly, check valve press-fitting, flow detection, and spring force testing. The press-fit integrated assembly described in this invention corresponds to the guide post assembly station, used to automatically press-fit and lock the spring, guide post, rack assembly, and pin inside the tensioner housing. This is a crucial process ensuring the coaxiality and assembly reliability of the tensioner's internal structure.

[0003] In existing technologies, the automated assembly of the rack tensioner guide post assembly generally suffers from the following drawbacks: Tooling vibration interferes with assembly accuracy: The tooling is directly fixed to the indexing turntable. The rotation of the turntable and the positioning gap will cause the tooling to vibrate, causing small parts such as springs and guide pillars to shift when they are put into the housing. It is difficult to ensure coaxiality and easy to cause uneven loading or assembly jamming.

[0004] Assembly timing coupling can easily cause interference: A single gripper simultaneously undertakes the assembly of multiple parts and the locking function of the pin. The pin action is time-coupled with the pressing action of the guide post and the rack. If the pressing depth is not up to standard before the pin is inserted, it will cause the parts to bend or the shell to crack.

[0005] Insufficient adaptability to height differences: Different parts require different reference surface heights for assembly. For example, spring assembly requires a higher operating space, and guide post pressing requires a lower reference surface. Existing fixed-height tooling cannot be adaptively adjusted, requiring frequent tooling changes or adjustment of gripper stroke, resulting in low production efficiency and flexibility.

[0006] Pressing impact can easily damage parts: The lack of buffering and gear locking mechanisms during the press-fitting process can cause instantaneous impact loads to deform precision components such as guide posts and gears, affecting the service life and performance stability of the tensioner.

[0007] Therefore, in view of this, the present invention proposes a press-fit integrated assembly for processing a rack tensioner to make up for and improve the deficiencies of the prior art. Summary of the Invention

[0008] To address the aforementioned technical problems, this invention provides a press-fit integrated assembly for processing a rack tensioner, thereby resolving the technical issues raised in the background section.

[0009] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a press-fit integrated assembly for processing a gear tensioner, used for assembling and assembling guide post structural components, including a lower frame, an indexing turntable rotatably connected above the lower frame, a turntable tooling fixing plate mounted on the outside of the indexing turntable, the guide post structural components located above the turntable tooling fixing plate, a guide post mounting module mounted above the lower frame, the guide post mounting module including a cylinder gripper one and a cylinder gripper two, and a process lifting assembly provided below the guide post mounting module, the process lifting assembly including a wedge block; The wedge block is used to lift the fixture on the turntable fixture fixing plate and lift it above the plate surface of the indexing turntable, so that the guide post structure is in a suspended assembly state. The cylinder gripper one sequentially puts the parts in the guide post structure into the corresponding positions and presses them to the preset depth. When the guide post structure is assembled and pressed to a certain depth, the cylinder gripper two inserts the pin to lock it.

[0010] Furthermore, a separable gap is reserved between the turntable fixture fixing plate and the indexing turntable. When the turntable fixture fixing plate is lifted, it is completely separated from the indexing turntable, ensuring that the guide column structure is free from the vibration of the indexing turntable.

[0011] Furthermore, the guide post module includes a support frame fixedly connected to the upper surface of the lower frame, a transplanting servo 1 is mounted on the surface of the support frame, a transplanting cylinder is mounted on the rear side wall of the transplanting servo 1, and a transplanting servo 2 is mounted on the side wall of the support frame.

[0012] Furthermore, the transplanting servo one and the transplanting servo two are respectively mounted on the outside of the support frame in the vertical and horizontal directions. The transplanting cylinder is connected to the output end of the transplanting servo one. The cylinder gripper one is located above the guide column structure, and the two are in a vertically parallel state. The cylinder gripper two is located on the side of the guide column structure, and the two are in a horizontally perpendicular state.

[0013] Furthermore, the process lifting assembly includes a drive cylinder mounted above the lower frame. The wedge block is fixedly connected to the outer wall of the output shaft end of the drive cylinder. A tooling support seat is slidably connected to the lower surface of the wedge block. The tooling support seat is fixedly connected to the upper surface of the lower frame. The wedge block cooperates with the bottom inclined surface of the turntable tooling fixing plate. The extension and retraction of the drive cylinder drives the wedge block to slide, thereby pushing the turntable tooling fixing plate to drive the guide column structure to complete the lifting and lowering.

[0014] Furthermore, a process adjustment component is provided above the lower frame. The process adjustment component includes a gear and a rack. The gear and rack mesh with each other. By changing the direction of the force between the gear and rack, the guide column structure can be raised and lowered step by step with the assembly process to adapt to the assembly height of different parts. In the initial state, it extends to the highest position. During the assembly process, it retracts step by step and returns to the highest position after the assembly is completed.

[0015] Furthermore, the process adjustment assembly also includes a drive motor mounted on the upper surface of the lower frame, the gear is fixedly connected to the outer wall of the output shaft end of the drive motor, a floating support is fixedly connected to the upper surface of the rack, and connecting springs are evenly installed between the floating support and the turntable fixture fixing plate, with the two ends of the connecting springs being fixedly connected to the floating support and the turntable fixture fixing plate, respectively.

[0016] Furthermore, a fixed support is slidably connected to the lower part of the floating support base, the fixed support base is fixedly connected to the surface of the lower frame, a magnetic column is fixedly connected to the upper surface of the fixed support base, and iron plates are fixedly connected to the lower surface of the floating support base at the positions corresponding to the magnetic columns.

[0017] Furthermore, the magnet posts are located at the four corners above the fixed support base, and in the initial state, the height of the magnet posts is at the same horizontal plane as the apex of the gear.

[0018] Compared with the prior art, the beneficial effects of the present invention are: (1) This device lifts the tooling independently by adding a tooling support base. Before assembly, the tooling is slightly lifted from the indexing turntable, so that the tooling is completely free from the turntable's operating gap and vibration. The spring, guide column, guide post, and rack are assembled in a suspended state. This solves the problem of part offset caused by turntable vibration in traditional fixed tooling, effectively improves the coaxiality of the guide post and the housing, and reduces the defect rate of off-center pressing and part jamming. At the same time, the suspended assembly design also provides sufficient operation and adjustment space for the subsequent assembly of parts of different specifications, enhancing the adaptability of the equipment.

[0019] This device employs a division-of-labor gripper design, clearly defining the functions of cylinder gripper one and cylinder gripper two. Cylinder gripper one is specifically responsible for the sequential picking up, placement into the housing, and pre-pressing of the spring, guide post, guide post, and rack. It can control the pressing depth of the guide post and rack to ensure the precise exposure of the pin mounting hole. Cylinder gripper two is independently responsible for the removal, transfer, insertion, and retraction of the pin. This achieves complete time-sequential decoupling between the pin action and the main assembly action. The pin operation is only triggered after the guide post and rack are pressed into place, completely avoiding interference problems such as premature pin insertion, part bending, or housing cracking caused by action time-sequential coupling, significantly improving the stability and reliability of the assembly process.

[0020] Compared to traditional fixed-height assembly fixtures, this solution, through the coordinated operation of the process lifting component and the specialized gripper, achieves both vibration isolation of the assembly reference surface and temporal decoupling of assembly actions. Without adding complex adjustment mechanisms, it effectively solves industry pain points such as low assembly accuracy, high defect rate, and poor production flexibility of the rack tensioner guide post assembly. This not only improves the production efficiency and finished product quality of a single machine but also reduces the cost of tooling replacement and debugging, providing a more efficient and reliable solution for the automated mass production of rack tensioners.

[0021] (2) Based on the first embodiment, this device optimizes the fixed height tooling lifting structure into a dynamic adaptive height adjustment scheme. By gradually shrinking the process adjustment component with the assembly process, it accurately adapts to the assembly height requirements of different parts such as springs, guide columns, guide pins and pins, and improves the height difference of the reference surface when assembling different parts. This ensures that the guide column, rack and pin are always coaxially aligned, significantly improving the assembly accuracy of the guide column structure and avoiding problems such as off-center pressing and part offset caused by height mismatch, further reducing the assembly defect rate.

[0022] Compared to the fixed height design of Embodiment 1, the process adjustment component in this embodiment, through the synergistic effect of the buffer damping of the connecting spring and the magnetic locking of the magnetic column during the height adjustment process, not only absorbs the impact force during the pressing process, preventing precision components such as guide columns and gears from deforming or cracking due to impact, but also counteracts the reset tendency of the connecting spring through the gradient-enhanced magnetic adsorption force, ensuring the stability of the tooling height at each level, effectively reducing the damage rate of parts and the failure rate of equipment. At the same time, it can be compatible with tensioner products of different specifications without changing the tooling, greatly improving the flexible production capacity and multi-variety adaptability of the equipment.

[0023] Furthermore, this embodiment replaces the traditional gripper stroke adjustment method with dynamic height adjustment. When assembling different parts, there is no need to adjust the gripper stroke separately. The reference surface can be adapted simply by switching the gear of the process adjustment component. This reduces the number of gripper adjustments and shortens the assembly cycle time of a single station. While ensuring assembly accuracy, it improves the overall production efficiency. At the same time, it provides a more flexible technical foundation for the cycle optimization and specification expansion of subsequent automated production lines, further enhancing the economy and reliability of automated assembly of the rack tensioner. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the axial view of the three-dimensional structure in Embodiment 1 of the present invention.

[0025] Figure 2 This is a top-view planar structural diagram of Embodiment 1 of the present invention.

[0026] Figure 3This is a three-dimensional structural diagram showing the positional relationship of the driving cylinder in Embodiment 1 of the present invention.

[0027] Figure 4 This is a three-dimensional structural diagram of the relevant components of the lifting assembly in Embodiment 1 of the present invention.

[0028] Figure 5 This is a side view of the lifting assembly in Embodiment 1 of the present invention.

[0029] Figure 6 This is a schematic diagram of the axial view of the three-dimensional structure in Embodiment 2 of the present invention.

[0030] Figure 7 This is a three-dimensional structural diagram of the positional relationship of the drive motor in Embodiment 2 of the present invention.

[0031] Figure 8 This is a three-dimensional structural diagram of the relevant components of the process adjustment assembly in Embodiment 2 of the present invention.

[0032] Figure 9 This is a three-dimensional structural diagram showing the positional relationship of the iron sheets in Embodiment 2 of the present invention.

[0033] Figure 10 This is a side view of the process adjustment component in Embodiment 2 of the present invention.

[0034] The numbers on the map are: 1. Lower frame; 11. Indexing turntable; 12. Turntable fixture fixing plate; 2. Guide post module; 21. Bearing frame; 22. Transplanting servo one; 23. Transplanting cylinder; 24. Transplanting servo two; 25. Cylinder gripper one; 26. Cylinder gripper two; 27. Guide post structural component; 3. Process lifting assembly; 31. Drive cylinder; 32. Wedge block; 33. Tooling support base; 4. Process adjustment components; 41. Drive motor; 42. Gear; 43. Rack; 44. Floating support; 45. Connecting spring; 46. Iron sheet; 47. Fixed support; 48. Magnetic column. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention. It should be noted that, as Figure 4As shown, the guide post structure 27 is a standard pre-assembled component of the rack tensioner. It contains a spring, guide post, guide post and rack assembly, representing a mature existing product structure. Its assembly logic and component mating relationships are industry-standard designs. Furthermore, the guide post module 2 and its subordinate components are also existing technology. Among them, the support frame 21 integrates and installs each motion unit through the existing aluminum profile or steel plate welded frame structure, ensuring the installation rigidity and motion coaxiality of the servo components, cylinders and grippers; the transfer servo one 22 and transfer servo two 24 provide high-precision displacement drive function, and realize closed-loop positioning in the vertical and horizontal directions through the existing servo motor + linear module / ball screw structure, so that the cylinder and gripper accurately reach the assembly coordinate point; the transfer cylinder 23 provides pressing and clamping power output function, and realizes linear thrust output through the existing guide rod cylinder or slide cylinder structure, providing stable force for gripper gripping and part pressing; cylinder gripper one 25 and cylinder gripper two 26 provide part gripping and pushing function, and realize parallel opening and closing clamping through the existing pneumatic finger cylinder structure, completing the gripping, transfer and assembly actions of springs, guide columns, guide pins, rack assemblies and pins. Given the universality of these structures, their specific principles will not be described in detail below.

[0036] Example 1: Please refer to Figure 1 - Figure 5 As shown, a press-fit integrated assembly for processing a gear tensioner is used to assemble and process the guide post structure 27. It includes a lower frame 1, an indexing turntable 11 rotatably connected above the lower frame 1, a turntable tooling fixing plate 12 mounted on the outside of the indexing turntable 11, the guide post structure 27 being located above the turntable tooling fixing plate 12, a guide post mounting module 2 mounted above the lower frame 1, the guide post mounting module 2 including a first cylinder gripper 25 and a second cylinder gripper 26, and a process lifting assembly 3 being provided below the guide post mounting module 2, the process lifting assembly 3 including a wedge block 32; The wedge block 32 is used to lift the tooling on the turntable tooling fixing plate 12 and lift it above the disk surface of the indexing turntable 11, so that the guide post structure 27 is in a suspended assembly state. The cylinder gripper 25 sequentially puts the parts in the guide post structure 27 into the corresponding positions and presses them to the preset depth. When the guide post structure 27 is assembled and pressed to a certain depth, the cylinder gripper 26 inserts the pin to lock it.

[0037] It should be noted that a separable gap is reserved between the turntable fixture fixing plate 12 and the indexing turntable 11. In the jacked state, the turntable fixture fixing plate 12 and the indexing turntable 11 are completely separated, ensuring that the guide column structure 27 is free from the vibration influence of the indexing turntable 11. The guide column module 2 includes a support frame 21 fixedly connected to the upper surface of the lower frame 1. The surface of the support frame 21 is equipped with a transfer servo 1 22. The rear side wall of the transfer servo 1 22 is equipped with a transfer cylinder 23. The side wall of the support frame 21 is equipped with a transfer servo 24. The transfer servo 1 22 and the transfer servo 24 are respectively mounted on the outside of the support frame 21 in the vertical and horizontal directions. The transfer cylinder 23 is connected to the output end of the transfer servo 1 22. The cylinder gripper 1 25 is located above the guide column structure 27 and the two are in a vertical parallel state. The cylinder gripper 26 is located on the side of the guide column structure 27 and the two are in a horizontal and vertical state.

[0038] Please refer to Figure 1 as well as Figure 4 , Figure 5 As shown, the process lifting assembly 3 includes a drive cylinder 31 mounted on the upper part of the lower frame 1, a wedge block 32 fixedly connected to the outer wall of the output shaft end of the drive cylinder 31, a tooling support seat 33 slidably connected to the lower surface of the wedge block 32, the tooling support seat 33 fixedly connected to the upper surface of the lower frame 1, the wedge block 32 cooperates with the bottom inclined surface of the turntable tooling fixing plate 12, and the wedge block 32 is driven to slide by the extension and retraction action of the drive cylinder 31, thereby pushing the turntable tooling fixing plate 12 to drive the guide column structure 27 to complete the lifting and lowering.

[0039] Specifically, this component uses a multi-station indexing turntable 11 as a transfer carrier to complete the automated assembly of the rack tensioner at the guide post assembly station. Under the action of the drive mechanism, the indexing turntable 11 completes the previous process (air tightness test) and then transfers to the guide post assembly station, so that the tooling is aligned with the assembly coordinates of the guide post module 2.

[0040] like Figure 5 As shown, after the tooling is in place, the process lifting assembly 3 is activated: the drive cylinder 31 extends, driving the wedge block 32 to slide along the upper surface of the tooling support 33. The inclined surface of the wedge block 32 cooperates with the inclined surface at the bottom of the turntable tooling fixing plate 12, lifting the turntable tooling fixing plate 12 and the upper guide column structure 27 upward as a whole, so that the turntable tooling fixing plate 12 is completely separated from the indexing turntable 11, forming a suspended assembly state. In this stage, the tooling support 33 provides sliding guidance and support for the wedge block 32, ensuring that the lifting action is smooth and without jamming. The suspended state can eliminate the interference of the indexing turntable 11's operating gap and vibration on the assembly accuracy, and avoid the offset during subsequent parts assembly.

[0041] When the guide post module 2 is activated, the horizontal transfer servo 24 and the vertical transfer servo 22 work together to drive the transfer cylinder 23 and the cylinder gripper 25 to move to the spring loading position in the guide post structure 27. After the cylinder gripper 25 closes and grabs the spring, the transfer servo 22 moves it to the top of the housing inside the guide post structure 27. The cylinder gripper 25 then releases and places the spring into the spring cavity at the bottom of the housing. Subsequently, the cylinder gripper 25 sequentially grabs the guide post, the guide post, and the rack assembly, repeating the transfer-placement action until the guide post is nested above the spring, the guide post is coaxially inserted into the guide post, and the rack assembly is docked with the guide post. After all parts are pre-assembled, the transfer cylinder 23 extends and, through the cylinder gripper 25, moves the guide post and rack assembly together. The pins are pressed in synchronously to a preset depth, fully exposing the pin mounting hole. During this stage, the transfer servo 1 22 and the transfer servo 24 ensure the positioning accuracy of the grippers through closed-loop control. After the guide post and rack assembly are pressed in place, the cylinder gripper 26, driven by the machine tool, picks up the pin from the tooling pick-up position and moves it to the pin assembly position, aligning it with the pin hole of the guide post structure 27. After the pressing action is completed, the cylinder gripper 26 pushes the pin into the locking hole of the housing and rack assembly, completing the axial locking of the internal structure of the guide post structure 27. Then, the cylinder gripper 26 and the transfer cylinder 23 synchronously return to the initial position. During this stage, the cylinder gripper 26 and the cylinder gripper 1 25 operate independently, triggering the pin action only after the pressing is completed, avoiding assembly interference.

[0042] After the pin is locked, the drive cylinder 31 retracts, causing the wedge block 32 to slide in the opposite direction. The turntable tooling fixing plate 12 falls back onto the indexing turntable 11, and the tooling returns to its initial flow state. Then the indexing turntable 11 rotates, transferring the assembled guide post structure 27 to the next process, while sending the new guide post structure 27 to be assembled into the workstation, entering the next assembly cycle.

[0043] Example 2: Based on Example 1, please refer to... Figure 7 - Figure 10 As shown, a process adjustment component 4 is provided above the lower frame 1. The process adjustment component 4 includes a gear 42 and a rack 43. The gear 42 and the rack 43 mesh with each other. By changing the direction of the force between the gear 42 and the rack 43, the guide column structure 27 can be raised and lowered step by step with the assembly process to adapt to the assembly height of different parts. In the initial state, it is extended to the highest position. During the assembly process, it is gradually retracted. After the assembly is completed, it is reset to the highest position. The process adjustment component 4 also includes a drive motor 41 mounted on the upper surface of the lower frame 1. The gear 42 is fixedly connected to the outer wall of the output shaft end of the drive motor 41. A floating support seat 44 is fixedly connected to the upper surface of the rack 43. Connecting springs 45 are evenly installed between the floating support seat 44 and the turntable tooling fixing plate 12. The two ends of the connecting springs 45 are fixedly connected to the floating support seat 44 and the turntable tooling fixing plate 12, respectively.

[0044] It should be noted that a fixed support 47 is slidably connected to the lower part of the floating support 44. The fixed support 47 is fixedly connected to the surface of the lower frame 1. A magnetic column 48 is fixedly connected to the upper surface of the fixed support 47. Iron plates 46 are fixedly connected to the lower surface of the floating support 44 at the positions corresponding to the magnetic column 48. The magnetic column 48 is located at the four corners above the fixed support 47. In the initial state, the height of the magnetic column 48 is at the same level as the apex of the gear 42.

[0045] Specifically, based on Embodiment 1, the core difference in this embodiment is that the process adjustment component 4 is used instead of the process lifting component 3 to achieve adaptive adjustment of the tooling height. The remaining tooling flow, parts assembly, pin locking, and reset flow logic are consistent with Embodiment 1, and will not be elaborated further here. Only the coordinated movement during the height adjustment stage will be explained: like Figure 10 As shown, before the assembly starts, the process adjustment component 4 is in the initial highest gear position: the drive motor 41 remains stationary, the gear 42 and rack 43 are meshed at the highest position, and the floating support seat 44 is raised to the highest point under the support of the rack 43, so that the turntable tooling fixing plate 12 and the guide column structure 27 are at the highest assembly height. During this stage, the fixed support seat 47 provides sliding guidance and bottom support for the floating support seat 44, avoiding height deviation of the tooling during the flow process, and reserving sufficient operating space for spring assembly.

[0046] As the assembly process progresses, the process adjustment component 4 retracts step by step according to the assembly requirements of the parts: After the spring is assembled, the drive motor 41 starts and drives the gear 42 to rotate counterclockwise. Through the meshing transmission between the gear 42 and the rack 43, the rotational motion is converted into a linear downward displacement, driving the rack 43 and the floating support 44 to slide smoothly along the guide structure of the fixed support 47, so that the turntable tooling fixing plate 12 and the guide post structure 27 sink to the first position, aligning with the guide post assembly reference surface, eliminating the height difference caused by spring compression, and ensuring the coaxiality of the guide post and the housing; after the guide post is assembled, the drive motor 41 continues to drive the gear 42 to rotate in the same direction, and the floating support 44 sinks further to the second position, adapting to the guide post pressing height, so that the guide post pressing reference surface is completely consistent with the pressing head height of the cylinder clamp 25, avoiding the bending of the guide post or cracking of the housing caused by uneven pressing; After the column and rack assembly are pressed into place, the floating support 44 retracts to its lowest position, ensuring precise coaxial alignment between the pin mounting hole and the pushing mechanism of the cylinder gripper 26, thus guaranteeing smooth pin insertion. During this stage, the connecting spring 45 is stretched synchronously as the floating support 44 sinks, providing buffer damping to absorb the pressing impact and prevent violent shaking of the tooling, while also helping to maintain the stability of the floating support 44's movement. Meanwhile, the distance between the magnetic column 48 and the iron plate 46 gradually decreases with each position change. This means that although the tension of the connecting spring 45 increases with the stroke, the magnetic attraction force between the magnetic column 48 and the iron plate 46 increases in a gradient, thereby counteracting the reset tendency of the connecting spring 45, ensuring the tooling height is stable during assembly, effectively preventing off-center pressing problems caused by tooling shaking or height deviation, and further improving the assembly accuracy of the guide column and rack assembly.

[0047] After the pin is locked, the drive motor 41 rotates clockwise in the opposite direction, driving the gear 42 to reverse. Through the gear 42-rack 43 transmission, the floating support seat 44 is driven to rise until it returns to the initial highest position. The magnetic column 48 and the iron plate 46 are disconnected from the magnetic attraction lock again. Then the turntable tooling fixing plate 12 is reset with the floating support seat 44, the guide column structure 27 returns to the initial flow height, and the indexing turntable 11 starts to transfer the finished product to the next process and enter the next assembly cycle.

[0048] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A press-fit integrated assembly for processing a gear tensioner, used for assembling a guide post structure (27), comprising a lower frame (1), an indexing turntable (11) rotatably connected above the lower frame (1), a turntable tooling fixing plate (12) assembled on the outside of the indexing turntable (11), and the guide post structure (27) located above the turntable tooling fixing plate (12), characterized in that: The lower frame (1) is equipped with a guide column module (2), which includes a cylinder gripper 1 (25) and a cylinder gripper 2 (26). The lower part of the guide column module (2) is provided with a process lifting assembly (3), which includes a wedge block (32). The wedge block (32) is used to lift the tooling on the turntable tooling fixing plate (12) and lift it above the disk surface of the indexing turntable (11), so that the guide post structure (27) is in a suspended assembly state. The cylinder gripper one (25) sequentially puts the parts in the guide post structure (27) into the corresponding positions and presses them to the preset depth. When the guide post structure (27) is assembled and pressed to a certain depth, the cylinder gripper two (26) inserts the pin to lock it.

2. The press-fit integrated assembly for processing a rack tensioner according to claim 1, characterized in that: A separable gap is reserved between the turntable fixture fixing plate (12) and the indexing turntable (11). When the turntable fixture fixing plate (12) is lifted, it is completely separated from the indexing turntable (11), ensuring that the guide column structure (27) is free from the vibration influence of the indexing turntable (11).

3. The press-fit integrated assembly for processing a rack tensioner according to claim 1, characterized in that: The guide post module (2) includes a support frame (21) fixedly connected to the upper surface of the lower frame (1). The surface of the support frame (21) is equipped with a transplanting servo one (22). The rear side wall of the transplanting servo one (22) is equipped with a transplanting cylinder (23). The side wall of the support frame (21) is equipped with a transplanting servo two (24).

4. The press-fit integrated assembly for processing a rack tensioner according to claim 3, characterized in that: The transplanting servo one (22) and transplanting servo two (24) are respectively mounted on the outside of the support frame (21) in the vertical and horizontal directions. The transplanting cylinder (23) is connected to the output end of the transplanting servo one (22). The cylinder gripper one (25) is located above the guide column structure (27) and the two are in a vertical parallel state. The cylinder gripper two (26) is located on the side of the guide column structure (27) and the two are in a horizontal and vertical state.

5. The press-fit integrated assembly for processing a rack tensioner according to claim 1, characterized in that: The process lifting assembly (3) includes a drive cylinder (31) mounted on the upper part of the lower frame (1). The wedge block (32) is fixedly connected to the outer wall of the output shaft end of the drive cylinder (31). The lower surface of the wedge block (32) is slidably connected to a tooling support seat (33). The tooling support seat (33) is fixedly connected to the upper surface of the lower frame (1). The wedge block (32) cooperates with the bottom inclined surface of the turntable tooling fixing plate (12). The wedge block (32) is driven to slide by the extension and retraction action of the drive cylinder (31), thereby pushing the turntable tooling fixing plate (12) to drive the guide column structure (27) to complete the lifting and lowering.

6. The press-fit integrated assembly for processing a rack tensioner according to claim 1, characterized in that: A process adjustment component (4) is provided above the lower frame (1). The process adjustment component (4) includes a gear (42) and a rack (43). The gear (42) and the rack (43) mesh with each other. By changing the direction of the force between the gear (42) and the rack (43), the guide column structure (27) can be raised and lowered step by step with the assembly process to adapt to the assembly height of different parts. In the initial state, it extends to the highest position. During the assembly process, it contracts step by step. After the assembly is completed, it is reset to the highest position.

7. The press-fit integrated assembly for processing a rack tensioner according to claim 6, characterized in that: The process adjustment assembly (4) also includes a drive motor (41) mounted on the upper surface of the lower frame (1), the gear (42) is fixedly connected to the outer wall of the output shaft end of the drive motor (41), a floating support seat (44) is fixedly connected to the upper surface of the rack (43), and connecting springs (45) are evenly installed between the floating support seat (44) and the turntable tooling fixing plate (12). The two ends of the connecting springs (45) are fixedly connected to the floating support seat (44) and the turntable tooling fixing plate (12) respectively.

8. The press-fit integrated assembly for processing a rack tensioner according to claim 7, characterized in that: A fixed support (47) is slidably connected to the bottom of the floating support (44). The fixed support (47) is fixedly connected to the surface of the lower frame (1). A magnet column (48) is fixedly connected to the upper surface of the fixed support (47). Iron plates (46) are fixedly connected to the lower surface of the floating support (44) at the positions corresponding to the magnet column (48).

9. The press-fit integrated assembly for processing a rack tensioner according to claim 8, characterized in that: The magnet column (48) is located at the four corners above the fixed support base (47), and in the initial state, the height of the magnet column (48) is at the same level as the apex of the gear (42).

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