Automatic press-fitting machine for coupling assembly

Abstract

This invention relates to an automatic press-fitting machine for coupling assembly, belonging to the field of press-fitting machine technology. It solves the technical problem of misalignment and damage during press-fitting caused by the upper component's lack of positioning and the difficulty in aligning the lower component. The machine includes a frame and a guide frame. A press-fitting plate and a support plate are slidably connected to the guide frame. A feeding plate is slidably connected to the support plate, and a feeding groove is provided on the support plate. Two limiting holes are provided on the feeding plate, and support rings are installed in each of the two limiting holes. Multiple upper clamping blocks are slidably connected to each of the two support rings. A main feeding slope is provided on the top of each upper clamping block, and a support block is slidably connected to one side of each upper clamping block. An auxiliary feeding slope is provided on the top of each support block. This invention effectively avoids press-fitting deviation caused by the tilting of the upper component by clamping, limiting, and automatically centering the upper component of the coupling to be press-fitted. During the press-fitting process, the upper component of the coupling smoothly disengages from the upper clamping block and accurately contacts the lower component to complete the press-fitting process.

Description

Technical Field

[0001] This invention relates to the field of press fitting technology, specifically to an automatic press fitting machine for coupling assembly. Background Technology

[0002] Marine couplings are components in the shafting system of a ship's transmission device that connect two shafts to each other. Their main function is to transmit torque, and some types also have the functions of compensating for the relative displacement of the two shafts and buffering and damping vibration. When assembling couplings, a press machine is needed to press the upper and lower parts of the coupling together to complete the processing.

[0003] Existing press fitting machines typically involve an operator placing the lower part of the coupling on a worktable, then placing the upper part directly on top of the lower part. Subsequently, the piston rod descends and presses against the upper part, continuously applying pressure to press the upper and lower parts together as a single unit.

[0004] However, in the actual assembly process, the upper part is simply stacked on top of the lower part without any limiting structure, which can easily lead to the upper part being placed unevenly or slightly tilted. This imbalance will cause the upper part to descend in an skewed posture during subsequent pressing, which will cause uneven squeezing or scratches on the contact surface of the upper and lower parts, affecting the final assembly quality of the coupling, and may even cause the coupling to become loose or have concentricity deviation after connection.

[0005] Furthermore, the limiting structure on which the lower component is placed has a fixed shape and a single size. When used for smaller couplings, although it can still be placed on it with difficulty, the lower component often cannot be in the center of the press-fit position, resulting in uneven force during the press-fit process. This eccentric force state will cause the upper and lower components to press into each other at an incorrect angle during the connection process, which will cause the coupling itself to have local deformation or assembly defects. In severe cases, it will also affect its normal use in the transmission system.

[0006] Based on this, the present invention provides an automatic press-fitting machine for coupling assembly to solve the above problems. Summary of the Invention

[0007] In view of the above situation and to overcome the defects of the prior art, the present invention provides an automatic press-fitting machine for coupling assembly. The present invention has a novel structure and ingenious design, and effectively solves the technical problems of easy misalignment and damage during press-fitting caused by the upper part having no limit on positioning and the lower part being difficult to align.

[0008] An automatic press-fitting machine for coupling assembly includes a frame, a guide frame, a worktable, a control panel, and a piston rod. A press-fitting plate and a bearing plate are slidably connected to the guide frame. A feeding plate is slidably connected to the bearing plate. A feeding groove is provided on the bearing plate. Two limiting holes are provided on the feeding plate. A support ring is installed in each of the two limiting holes. Multiple upper clamping blocks are slidably connected to each of the two support rings. A main feeding slope is provided on the top of each upper clamping block. A support block is slidably connected to one side of each upper clamping block. An auxiliary feeding slope is provided on the top of each support block.

[0009] Preferably, both sides of the bearing plate are provided with external sliding grooves, and both sides of the feeding plate are fixedly connected with external sliders that match the external sliding grooves.

[0010] Preferably, an upper electric push rod is fixedly connected to the bottom of the support plate, a push frame is fixedly connected to the output end of the upper electric push rod, and tension belts are fixedly connected to both sides of the push frame. The other ends of the four tension belts are respectively fixedly connected to both sides of the two outer sliders.

[0011] Preferably, the pressing plate has two guide grooves, each of which is slidably connected to a sliding frame. The top of the pressing plate is rotatably connected to a bidirectional threaded rod, and both sliding frames are threaded onto the bidirectional threaded rod.

[0012] Preferably, the bottom of the pressing plate is provided with an adjustment groove, and the left punch head and the right punch head are fixedly connected to the opposite sides of the two sliding frames respectively.

[0013] Preferably, a fixing ring is fixedly connected to the top of the workbench, and multiple downward extension slots are provided on the fixing ring. Two fixing slots are provided on one side of each of the multiple downward extension slots. A lower clamping block is slidably connected in each of the multiple downward extension slots, and a tension spring is provided between the multiple lower clamping blocks and the multiple downward extension slots.

[0014] Preferably, the top of the workbench is fixedly connected to two supports, and rotating rings are rotatably connected to the two supports. Multiple pushing blocks that slide in cooperation with the lower clamping block are fixedly connected to the rotating rings.

[0015] Preferably, one side of the rotating ring is provided with gear teeth, and a lower electric push rod is fixedly connected to the top of the worktable. The output end of the lower electric push rod is fixedly connected to a rack that meshes with the gear teeth.

[0016] The present invention has the following technical effects.

[0017] 1. This invention, through the upper protruding groove, upper clamping block, clamping spring, and main discharge slope, can assist in the placement of the upper components of the coupling that need to be press-fitted, achieving clamping limit and automatic centering, ensuring that the upper components remain in a horizontal and balanced state, thereby effectively avoiding press-fitting deviations caused by the tilting of the upper components, facilitating smooth subsequent press-fitting operations. Through the fixing block, adjusting screw, support block, and auxiliary discharge slope, the upper components of the coupling are smoothly disengaged from the upper clamping block during the press-fitting process, accurately contacting the lower components to complete the press-fitting, further improving the stability and reliability of the assembly.

[0018] 2. This invention, through a sliding frame, a bidirectional threaded rod, a left punch head, and a right punch head, can flexibly adjust the pressing area when pressing upper parts of different sizes, making the upper parts more uniformly stressed. This effectively avoids the problem of excessive local pressure or uneven force due to a fixed pressing head area, improves the adaptability of the equipment to couplings of different specifications, and ensures the consistency of pressing quality.

[0019] 3. This invention uses a lower clamping block, a rotating ring, a pushing block, and a lower electric push rod to drive multiple lower clamping blocks to move synchronously toward the center of the fixed ring. While clamping the lower component, it achieves precise center positioning, thereby cooperating with the accurately descending upper component to complete the press-fit operation. This ensures that the upper and lower components remain concentric during the press-fit process, avoiding press-fit damage caused by the misalignment of the lower component, and significantly improving the assembly accuracy of the coupling.

[0020] 4. This invention, through the lower extension groove, the fixing groove, and the tension spring, pulls multiple lower clamping blocks to move away from each other synchronously after press-fitting, so as to make room on the fixing ring. This facilitates the placement of coupling lower parts of different sizes without the need for manual adjustment, making the operation simple and quick. It effectively improves the work efficiency when changing lower parts of different specifications, while ensuring the positioning consistency between multiple press-fitting operations. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the assembly structure of the guide frame, pressure plate, bearing plate and worktable in this invention;

[0024] Figure 3 This is a schematic diagram of the assembly structure of the pressure plate, sliding frame and bidirectional threaded rod in this invention;

[0025] Figure 4 This is a schematic diagram of the assembly structure of the adjusting groove, left punch head, and right punch head in this invention;

[0026] Figure 5 This is a schematic diagram of the assembly structure of the sliding frame, left stamping head and right stamping head in this invention;

[0027] Figure 6 This is a schematic diagram of the assembly structure of the bearing plate, tension belt and push frame in this invention;

[0028] Figure 7 This is a schematic diagram of the assembly structure of the feeding plate, limiting hole, inner groove and support ring in this invention;

[0029] Figure 8 This is a schematic diagram of the assembly structure of the upper protruding groove, the upper clamping block, and the sleeve in this invention;

[0030] Figure 9 This is a schematic diagram of the assembly structure of the upper clamping block, the insertion slot, and the clamping spring in this invention;

[0031] Figure 10 This is a schematic diagram of the assembly structure of the upper clamping block, track groove, fixing block and support block in this invention;

[0032] Figure 11 This is a schematic diagram of the assembly structure of the fixed ring, lower clamping block, rotating ring and pushing block in this invention.

[0033] Reference numerals: 1. Frame; 2. Guide frame; 3. Press plate; 4. Bearing plate; 5. Worktable; 6. Control panel; 7. Connecting frame; 8. Piston rod; 9. Guide groove; 10. Sliding frame; 11. Double-sided threaded rod; 12. Adjusting groove; 13. Left punch head; 14. Right punch head; 15. Cylinder; 16. Limiting groove; 17. Lifting spring; 18. Feeding plate; 19. Outer sliding groove; 20. Outer slider; 21. Stretching belt; 22. Push frame; 23. Upper electric push rod; 24. Support column; 25. Limiting block; 26. Discharge groove; 27. Limiting hole; 8. Embedded groove; 29. ​​Support ring; 30. Upper protruding groove; 31. Upper clamping block; 32. Inner sliding groove; 33. Inner slider; 34. Sleeve; 35. Insertion groove; 36. Clamping spring; 37. Main discharge slope; 38. Track groove; 39. Fixing block; 40. Slide rod; 41. Adjusting screw; 42. Support block; 43. Auxiliary discharge slope; 44. Fixing ring; 45. Lower protruding groove; 46. Fixing groove; 47. Lower clamping block; 48. Tension spring; 49. Bracket; 50. Rotating ring; 51. Push block; 52. Gear tooth; 53. Lower electric push rod; 54. Rack. Detailed Implementation

[0034] The foregoing and other technical contents, features and effects of the present invention are described in conjunction with the appendix below. Figures 1 to 11 The detailed description of the embodiments will make this clear. All references to the following embodiments are made with reference to the accompanying drawings.

[0035] Exemplary embodiments of the present invention will now be described with reference to the accompanying drawings.

[0036] This invention relates to an automatic press-fitting machine for coupling assembly, comprising a frame 1, a guide frame 2, a worktable 5, a control panel 6, and a piston rod 8. A press-fitting plate 3 and a support plate 4 are slidably connected to the guide frame 2. The support plate 4 is located above the worktable 5, and the press-fitting plate 3 is located above the support plate 4. The support plate 4 is U-shaped. A feeding plate 18 is slidably connected to the support plate 4. A discharge groove 26 is provided on the support plate 4. Two limiting holes 27 are provided on the feeding plate 18. The size of the two limiting holes 27 is the same as that of the discharge groove 26, and the discharge groove 26 corresponds to the two limiting holes 27. In conjunction with this, each of the two limiting holes 27 has an embedded groove 28, and each of the two embedded grooves 28 has a fixed support ring 29. The outer diameter of the support ring 29 is equal to the outer diameter of the embedded groove 28, and the inner diameter of the support ring 29 is the same as the diameter of the limiting hole 27. Each of the two support rings 29 has multiple upper protruding grooves 30, which are rectangular. Each of the multiple upper protruding grooves 30 has an upper clamping block 31 slidably connected to it. The top of the upper clamping block 31 has a main discharge slope 37, and a support block 42 is slidably connected to one side of the upper clamping block 31. The top of the support block 42 has an auxiliary discharge slope 43.

[0037] In this embodiment, the operator first places the lower component of the coupling on the workbench 5, then inserts the upper component into the limiting hole 27. The bottom of the upper component first contacts the main discharge slope 37 at the top of the upper clamping block 31 inside the limiting hole 27. The operator then continues to push the upper component downwards, causing multiple upper clamping blocks 31 to simultaneously extend upwards and retract into the groove 30, thus allowing the upper component to smoothly enter the area between the support block 42 and the upper clamping blocks 31. At this time, the multiple upper clamping blocks 31 simultaneously move towards the center of the limiting hole 27, clamping and limiting the pushed-in upper component, and automatically completing centering. The upper component is kept in the correct position to prepare for subsequent assembly. During the pressing process, the upper piston rod 8 pushes the upper component downward, causing it to descend and contact the lower component. The piston rod 8 continues to push downward, and the upper component slides down along the auxiliary material slope 43, thereby passing over the support block 42 and moving below the support block 42, so that the upper component can be smoothly disengaged from the upper clamping block 31, and finally the entire pressing operation is completed. In addition, while pressing the upper component placed in the limiting hole 27, the operator can place a new upper component in another limiting hole 27 in advance to achieve alternating pressing, thereby greatly improving work efficiency.

[0038] As one embodiment, outer sliding grooves 19 are provided on both sides of the bearing plate 4, outer sliding blocks 20 are fixedly connected to both sides of the feeding plate 18, the two outer sliding blocks 20 are respectively slidably connected in the two outer sliding grooves 19, an upper electric push rod 23 is fixedly connected to the bottom of the bearing plate 4, the upper electric push rod 23 is connected to a power supply and a controller, a push frame 22 is fixedly connected to the output end of the upper electric push rod 23, the push frame 22 is in the shape of a Chinese character '凵', stretch belts 21 are fixedly connected to both sides of the push frame 22, the outer sliding blocks 20, the stretch belts 21 and the push frame 22 are connected end to end, the stretch belts 21 pass through the bearing plate for limiting, and the other ends of the four stretch belts 21 are respectively fixedly connected to both sides of the two outer sliding blocks 20.

[0039] As one embodiment, sleeves 34 are fixedly connected to one side of a plurality of upper protruding grooves 30, insertion grooves 35 are provided on one side of a plurality of upper clamping blocks 31, the plurality of sleeves 34 are respectively slidably connected in the plurality of insertion grooves 35, and a clamping spring 36 is provided between one side of the insertion groove 35 and one side of the sleeve 34.

[0040] In this embodiment, when placing an upper component, the upper component slides on the main blanking slope 37 and pushes the upper clamping blocks 31 outward to make them contract into the upper protruding grooves 30. At this time, the sleeve 34 on one side of the upper protruding groove 30 slides into the insertion groove 35 on the upper clamping block 31, meanwhile the clamping spring 36 located between the upper clamping block 31 and the inner wall of the sleeve 34 is squeezed, undergoes elastic deformation and generates a reverse acting force. After the upper component continues to descend and smoothly enters the area between the support block 42 and the upper clamping blocks 31, the resistance exerted by the upper component on the upper clamping blocks 31 disappears immediately. At this time, the plurality of upper clamping blocks 31 approach each other under the push of the reverse acting force of the clamping springs 36, so as to realize automatic clamping and centering of the upper component, ensure that the upper component is in the correct position, and prepare for subsequent press-fitting. During press-fitting, the upper component slides on the auxiliary blanking slope 43, pushes the plurality of upper clamping blocks 31 to contract into the upper protruding grooves 30 again, and squeezes the clamping springs 36. After the upper component is separated, the plurality of upper clamping blocks 31 reset under the thrust of the clamping springs 36, which is convenient for placing a new upper component again.

[0041] After the upper component is placed in the limiting hole 27, the output end of the upper electric push rod 23 begins to extend, driving the push frame 22 to move to one side at the bottom of the support plate 4. The push frame 22 pulls the two outer sliders 20 through the tension belt 21, causing them to slide to the same side in the two outer sliding grooves 19 respectively. This drives the loading plate 18 to move to that side on the support plate 4, so that the limiting hole 27 containing the upper component is moved directly above the unloading groove 26 to facilitate subsequent pressing operations. While pressing the upper component in the limiting hole 27, the operator can pre-place a new upper component in another limiting hole 27 that has moved to the other side, thus achieving... Synchronous material preparation: When the upper component in a limiting hole 27 is pressed out, the output end of the upper electric push rod 23 shortens, driving the push frame 22 to move in the opposite direction. The tension belt 21 pulls the outer slider 20 in the opposite direction, causing the two outer sliders 20 to slide in opposite directions in the two outer sliding grooves 19 respectively. This causes the loading plate 18 to move in the opposite direction on the bearing plate 4. At this time, the limiting hole 27 loaded with the new upper component is moved above the unloading groove 26, waiting for the next pressing. The empty limiting hole 27 that has just been pressed is moved to one side, making it convenient for workers to quickly reload the upper component, greatly reducing waiting time and significantly improving work efficiency.

[0042] As one embodiment, inner sliding grooves 32 are provided on both sides of the upper protrusion groove 30, and inner sliders 33 are fixedly connected to both sides of the upper clamping block 31. The two inner sliders 33 are slidably connected in the two inner sliding grooves 32 respectively. Track grooves 38 are provided on both sides of the multiple upper clamping blocks 31, and fixing blocks 39 are slidably connected in the multiple track grooves 38. Support blocks 42 are fixedly connected to one side of the two fixing blocks 39. Adjusting screws 41 and sliding rods 40 are respectively provided in the track grooves 38 on both sides of the upper clamping block 31. One fixing block 39 is threadedly connected to the adjusting screw 41, and the other fixing block 39 is slidably connected to the sliding rod 40.

[0043] In this embodiment, when the upper clamping block 31 slides in the upper extension groove 30, the inner sliders 33 on both sides of the upper clamping block 31 slide in the inner sliding grooves 32 on both sides respectively, limiting the sliding upper clamping block 31. When limiting the upper parts of different sizes, the operator can turn the adjusting screw 41 to drive the fixing block 39 and the support block 42 on one side to rise or fall. The other fixing block 39 slides on the slide rod 40, thereby adjusting the height of the support block 42 and the distance between the upper clamping block 31 and the support block 42.

[0044] As an example, a connecting frame 7 is fixedly connected to the top of the press plate 3. The press plate 3 is fixedly connected to the bottom end of the piston rod 8 through the connecting frame 7. A mounting plate is fixedly connected to the bottom end of the piston rod 8. The mounting plate is located inside the connecting frame 7 and is tightened by fixing bolts. Two guide grooves 9 are opened on the press plate 3. Sliding frames 10 are slidably connected in both guide grooves 9. A bidirectional threaded rod 11 is rotatably connected to the top of the press plate 3. The bidirectional threaded rod 11 is a threaded rod with opposite thread directions at both ends. Both sliding frames 10 are threadedly connected to the bidirectional threaded rod 11.

[0045] As one embodiment, the bottom of the pressing plate 3 is provided with an adjustment groove 12. A left punch head 13 and a right punch head 14 are fixedly connected to opposite sides of the two sliding frames 10. Both the left punch head 13 and the right punch head 14 consist of an arc-shaped plate and multiple interlocking support plates. The left punch head 13 and the right punch head 14 can be interlocked to form an elliptical shape. Both the left punch head 13 and the right punch head 14 are slidably connected within the adjustment groove 12. The sides of the left punch head 13 and the right punch head 14 are respectively connected to the adjustment groove 12. The two sides of the groove 12 slide together. The bottom of the press plate 3 is fixedly connected to two cylinders 15. Limiting grooves 16 are opened on both sides of the two cylinders 15. The top of the bearing plate 4 is fixedly connected to two pillars 24. The top of the two pillars 24 is fixedly connected to a limiting block 25. The two pillars 24 are slidably connected to the two cylinders 15 respectively. The two limiting blocks 25 are slidably connected to the limiting grooves 16 on the two cylinders 15 respectively. Lifting springs 17 are provided between the two pillars 24 and the inner walls of the two cylinders 15.

[0046] In this embodiment, during the pressing operation, the piston rod 8 drives the pressing plate 3 to descend, thereby causing the stamping structure composed of the left punch head 13 and the right punch head 14 to move down synchronously. At this time, the bearing plate 4 and the pressing plate 3 are connected as a whole by the support column 24 and the cylinder 15. When the pressing plate 3 begins to descend, the bearing plate 4 follows the pressing plate 3 and descends together under its own gravity until the bottom of the bearing plate 4 contacts the top surface of the worktable 5. Then the bearing plate 4 stops descending, and the pressing plate 3 continues to descend, driving the left punch head 13 and the right punch head 14 to move down further until they contact the upper part and begin to apply pressure to the upper part. During the process of the pressing plate 3 continuing to descend, the cylinder 15 slides down along the surface of the support column 24, thereby squeezing the lifting spring 17 between the cylinder 15 and the support column 24. However, since the bearing plate 4 has stopped, the sliding of the cylinder 15 will cause the lifting spring 17 to be compressed, generating a reverse force to provide power for subsequent reset.

[0047] After the press-fitting is completed, the piston rod 8 drives the press-fitting plate 3 to ascend. At this time, the compressed lifting spring 14 continuously exerts downward pressure on the bearing plate 4 until the spring gradually resets. When the support post 24 slides relative to the cylinder body 15, the limit block 25 on the support post 24 slides in the limit slot 16 to limit the movement of the support post 24, preventing the support post 24 from completely separating from the cylinder body 15. After the limit block 25 descends to the bottom of the limit slot 16 and comes into contact therewith, if the press-fitting plate 3 continues to ascend, the limit block 25 will drive the bearing plate 4 to ascend together. The bearing plate 4 rises accordingly, and the distance between the bearing plate 4 and the workbench 5 increases, thereby providing sufficient space for operators to facilitate placing the lower component to be press-fitted and taking out the press-fitted coupling.

[0048] When press-fitting upper components of different sizes, an operator can turn the bidirectional threaded rod 11 to drive the two sliding frames 10 to synchronously approach or move away from each other on the bidirectional threaded rod 11, so as to drive the left punching head 13 and the right punching head 14 to adjust the spacing accordingly. The contact range of the punching heads can be flexibly changed according to the actual press-fitting area of the upper component, so that the upper component is stressed more uniformly during the press-fitting process, and local overload or unbalanced load caused by mismatched press-fitting area is avoided.

[0049] As an embodiment, a fixed ring 44 is fixedly connected to the top of the workbench 5, a plurality of lower extension slots 45 are opened on the fixed ring 44, two fixing slots 46 are opened on one side of each of the plurality of lower extension slots 45, a lower clamping block 47 is slidably connected in each of the plurality of lower extension slots 45, the lower clamping block 47 is in the shape of a "square frame", the top and bottom parts of the lower clamping block 47 are slidably connected to the two fixing slots 46 respectively, and a tension spring 48 is arranged between each of the plurality of lower clamping blocks 47 and the corresponding one of the plurality of lower extension slots 45.

[0050] As an embodiment, two supports 49 are fixedly connected to the top of the workbench 5, a rotating ring 50 is rotatably connected to the two supports 49, the centers of the rotating ring 50 and the fixed ring 44 are on the same straight line, a plurality of pushing blocks 51 are fixedly connected to the inner wall of the rotating ring 50, and the plurality of pushing blocks 51 are respectively in sliding fit with the plurality of lower clamping blocks 47.

[0051] As an embodiment, gear teeth 52 are arranged on one side of the rotating ring 50, a lower electric push rod 53 is fixedly connected to the top of the workbench 5, the lower electric push rod 53 is connected to a power supply and a controller, a rack 54 is fixedly connected to the output end of the lower electric push rod 53, and the rack 54 meshes with the gear teeth 52 on the rotating ring 50.

[0052] In this embodiment, when placing the lower component, the operator inserts the bottom of the lower component into the fixing ring 44, so that the protrusion on the surface of the lower component naturally falls on the top of the fixing ring 44. After placement, the lower electric push rod 53 is activated, and its output end extends, driving the rack 54 to move to one side, thereby driving the gear teeth 52 meshing with the rack 54 to rotate. The rotation of the gear teeth 52 causes the rotating ring 50 to rotate synchronously on the two supports 49, thereby causing the push block 51 on the rotating ring 50 to rotate accordingly. During the rotation, the push block 51 pushes multiple lower clamping blocks. 47 slide synchronously within the lower extension groove 45, moving closer to each other to clamp and limit the placed lower component, and complete the center positioning to ensure that the lower component is in the center of the fixing ring 44. After the lower clamping block 47 reliably clamps the lower component, the output end of the lower electric push rod 53 stops extending. As the push block 51 pushes the lower clamping block 47 to move towards the center of the fixing ring 44, the tension spring 48 between the lower clamping block 47 and the lower extension groove 45 is gradually stretched and undergoes elastic deformation, thereby generating a continuous tension on the lower clamping block 47.

[0053] After the coupling is fully press-fitted, the output end of the lower electric push rod 53 begins to retract, causing the rotating ring 50 to rotate in the opposite direction on the bracket 49. The push block 51 also rotates in the opposite direction, gradually disengaging from the lower clamping block 47. At this point, the lower clamping block 47 is no longer subjected to the pushing force of the push block 51, but only to the tension force of the tension spring 48. Under the pull of the tension spring 48, multiple lower clamping blocks 47 synchronously reset and move away from each other, thereby freeing up space inside the fixing ring 44, making it convenient for operators to quickly place the next lower component.

[0054] Working principle of this invention:

[0055] In use, the operator first places the lower part of the coupling on the fixing ring 44, starts the lower electric push rod 53, drives multiple lower clamping blocks 47 to move closer to each other synchronously, reliably clamps the lower part, and completes the center positioning to ensure that the lower part is in the press-fit center position. After the lower part is placed and clamped, the upper part that is used with it is placed into the limiting hole 27. At this time, the clamping spring 36 pushes multiple upper clamping blocks 31 to move closer to each other, clamps and limits the upper part, and also achieves center positioning, so that the upper part is kept in a horizontal and balanced state.

[0056] After the upper component is clamped, the piston rod 8 is activated to push the pressing plate 3 and the bearing plate 4 to descend synchronously. When the bearing plate 4 descends to the point of contacting the top of the worktable 5 and encountering resistance, the bearing plate 4 stops descending, while the pressing plate 3 continues to move downward. The pressing plate 3 drives the left punch head 13 and the right punch head 14 to apply pressure to the upper component, so that the upper component overcomes the resistance of the clamping spring 36 and disengages from the multiple upper clamping blocks 31. The upper component continues to descend and contacts the lower component that has been positioned below. Under the continuous push of the piston rod 8, the pressing operation of the coupling is completed.

[0057] After pressing is completed, the piston rod 8 drives the pressing plate 3 and the bearing plate 4 to rise and reset. During the entire pressing process, the workers can place new upper parts in the other limiting hole 27 of the loading plate 18 in advance to achieve synchronous material preparation. The upper electric push rod 23 drives the loading plate 18 to move back and forth on the bearing plate 4, so that the limiting hole 27 loaded with the new upper parts moves sequentially to the top of the unloading groove 26, thereby realizing continuous and alternating pressing operations and greatly improving work efficiency.

[0058] Meanwhile, after the pressing is completed, the lower electric push rod 53 at the bottom no longer applies a pushing force to the multiple lower clamping blocks 47. At this time, the tension spring 48 pulls the multiple lower clamping blocks 47 to move away from each other and reset, making room inside the fixing ring 44, so that the staff can quickly place the new lower parts and prepare for the next pressing operation.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic press-fitting machine for assembling couplings, comprising a frame (1), a guide frame (2), a worktable (5), a control panel (6), and a piston rod (8), characterized in that, The guide frame (2) is slidably connected to a pressing plate (3) and a bearing plate (4). The bearing plate (4) is slidably connected to a feeding plate (18). The bearing plate (4) is provided with a feeding groove (26). The feeding plate (18) is provided with two limiting holes (27). Each of the two limiting holes (27) is equipped with a support ring (29). Each of the two support rings (29) is slidably connected to multiple upper clamping blocks (31). The top of the upper clamping block (31) is provided with a main feeding slope (37). One side of the upper clamping block (31) is slidably connected to a support block (42). The top of the support block (42) is provided with an auxiliary feeding slope (43). Both sides of the bearing plate (4) are provided with external sliding grooves (19), and both sides of the feeding plate (18) are fixedly connected with external sliding blocks (20) that match the external sliding grooves (19). The bottom of the bearing plate (4) is fixedly connected to an upper electric push rod (23), the output end of the upper electric push rod (23) is fixedly connected to a push frame (22), and both sides of the push frame (22) are fixedly connected to tension belts (21). The other ends of the four tension belts (21) are respectively fixedly connected to the two sides of the two outer sliders (20). The press plate (3) has two guide grooves (9), and each guide groove (9) is slidably connected to a sliding frame (10). The top of the press plate (3) is rotatably connected to a bidirectional threaded rod (11), and the two sliding frames (10) are threadedly connected to the bidirectional threaded rod (11). The top of the workbench (5) is fixedly connected to a fixing ring (44), and multiple lower extension slots (45) are provided on the fixing ring (44). Two fixing slots (46) are provided on one side of each of the multiple lower extension slots (45). Lower clamping blocks (47) are slidably connected in each of the multiple lower extension slots (45), and tension springs (48) are provided between the multiple lower clamping blocks (47) and the multiple lower extension slots (45).

2. The automatic press-fitting machine for coupling assembly according to claim 1, characterized in that, The bottom of the press plate (3) is provided with an adjustment groove (12), and the left punch head (13) and the right punch head (14) are fixedly connected to the opposite sides of the two sliding frames (10).

3. The automatic press-fitting machine for coupling assembly according to claim 1, characterized in that, The top of the workbench (5) is fixedly connected to two supports (49), and a rotating ring (50) is rotatably connected to the two supports (49). The rotating ring (50) is fixedly connected to a plurality of push blocks (51) that slide with the lower clamping block (47).

4. The automatic press-fitting machine for coupling assembly according to claim 3, characterized in that, The rotating ring (50) has a gear tooth (52) on one side, and a lower electric push rod (53) is fixedly connected to the top of the worktable (5). The output end of the lower electric push rod (53) is fixedly connected to a rack (54) that meshes with the gear tooth (52).

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