Equipment for press-fitting an inner ring and an inner core

Abstract

The present invention discloses a device for press-fitting an inner ring and an inner core, which comprises a frame; the frame is provided with a supporting table, a downward pressing driving cylinder, a mounting frame, a vibrating disk and a feeding chute in the X direction. A pressing sleeve is fixed to the piston rod of the downward pressing driving cylinder, and a clamp is provided at the lower opening of the pressing sleeve; the outlet of the disk track of the vibrating disk is communicated with the inlet of the feeding chute; the mounting frame is provided with a U-shaped support seat for receiving the inner ring falling from the outlet of the feeding chute, and the mounting frame is further provided with a first Y-direction cylinder for pushing the U-shaped support seat forward to directly below the pressing sleeve; the U-shaped support seat comprises a base plate and a U-shaped cover plate. The base plate is provided with a plurality of guide rods, and the U-shaped cover plate is movably sleeved on each guide rod. A head is provided at the top of each guide rod, and a corner compression spring is sleeved on the rod portion. The U-shaped cover plate abuts against the heads of the guide rods under the action of the corner compression spring. A cylindrical top head is arranged in the U opening of the U-shaped cover plate, and the cylindrical top head is fixed on the base plate. This device can automatically and accurately snap a single inner ring into the clamp at the lower opening of the pressing sleeve.

Description

Technical Field

[0001] The present invention relates to the technical field of auto parts production and processing, and more specifically, to a pressing device for assembling internal parts of an automotive shock absorber. Even more specifically, it is a device for pressing an internal ring and an internal core. Background Art

[0002] In the auto parts industry, it is often necessary to fit a hard internal ring made of metal such as aluminum or iron or engineering plastic into a circular groove of an internal core made of an elastic material such as polyurethane material to form an internal part of an automotive shock absorber.

[0003] The pressing devices of the prior art are relatively simple. They include a frame, on which a mounting table and a downward pressing drive cylinder are provided. A pressing sleeve with a downward opening is fixed to the piston rod of the downward pressing drive cylinder, and a clamp for clamping the internal ring is provided at the downward opening of the pressing sleeve. The pressing process of the prior art is semi-automatic. Workers need to manually place a single internal core on the mounting table, manually snap a single internal ring into the clamp at the lower opening of the pressing sleeve, and then start the downward pressing drive cylinder to drive the pressing sleeve downward to cover the internal core, and simultaneously carry the internal ring to snap into the circular groove of the internal core.

[0004] Overall, the devices of the above prior art have a low degree of automation and a large proportion of manual operations. Especially in the feeding process of the internal ring, workers need to hold an internal ring and snap it into the clamp at the lower opening of the pressing sleeve individually. Each time a pressing is performed, it needs to be manually snapped in once. The work has no continuity, cannot be batch-operated, has a large labor intensity, requires a single person-hour of labor cost, is inefficient and slow, and does not meet the needs of enterprises; the manual feeding of the internal core is also equally inefficient, labor-consuming, and has a low operation accuracy. It cannot ensure that the internal core is always exactly right below the pressing sleeve each time, affecting the pressing quality and efficiency.

[0005] Moreover, in terms of details, the specific structure of the pressing sleeve of this pressing device also has many shortcomings. For example Figure 1As shown in the figure, the top plate 101 of the bushing is hinged with multi-piece arc-shaped clamping pieces 103, and the above-mentioned clamping pieces are closed to form a cylinder 104; an elastic hoop 105 is provided at the lower part of the outer ring surface of the cylinder. When a worker squeezes the hard inner ring 106 into the lower opening of the cylinder, it will cause the outer expansion of each clamping piece, but the elastic hoop will restrain each clamping piece from expanding outward, thus forming an elastic force to clamp the inner ring. In this way, the bushing relies on the elastic hoop to provide the clamping force. However, the elastic hoop has poor durability and a short service life, and needs to be frequently replaced, resulting in material waste and an increase in the use cost; moreover, when clamping the inner ring, the contact between each clamping piece and the inner ring is a surface contact, which is inevitable to cause scratching and damage; furthermore, the bushing has poor versatility, and the diameter range of the inner ring that can be effectively clamped is small. Once the diameter of the inner ring exceeds the range, it cannot be effectively clamped whether it is too large or too small; in addition, for the hinged assembly of the arc-shaped clamping pieces, chordal pin holes 102 need to be opened on the arc-shaped surfaces of the arc-shaped clamping pieces and the convex part of the top plate, with high preparation process requirements, great preparation difficulty, and high cost; also, the top plate of the bushing is connected to the piston rod of the lower pressing driving cylinder through a pressing plate. Four threaded holes are penetrated through the top plate, and the bushing is screwed to the pressing plate through four bolts; in actual operation, different-sized inner core parts need to be matched, so different-sized bushings need to be frequently replaced. However, each time the bushing is replaced, the bolts need to be screwed 4 times, resulting in a more cumbersome operation, time-consuming and laborious. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a device for pressing an inner ring and an inner core, which can batch-feed and automatically and accurately clamp a single inner ring in the fixture at the lower opening of the bushing.

[0007] The technical solution of the present invention is to provide a device for pressing an inner ring and an inner core, which includes a frame; a base and a lower pressing driving cylinder are provided on the frame, a bushing is fixed to the piston rod of the lower pressing driving cylinder, and a fixture for clamping the inner ring is provided at the lower opening of the bushing; the frame is also provided with a first feeding device, the first feeding device includes a mounting frame, a vibrating disk and an X-direction feeding channel, a winding-up channel is provided in the vibrating disk, and the outlet of the winding-up channel is communicated with the inlet of the feeding channel; the mounting frame is provided with a U-shaped support for receiving a single inner ring dropped from the outlet of the feeding channel, and the mounting frame is also provided with a first Y-direction cylinder for pushing the U-shaped support forward to directly below the bushing; the U-shaped support includes a base plate and a U-shaped cover plate. The base plate is provided with a plurality of guide rods, the U-shaped cover plate is movably sleeved on each guide rod, the top of each guide rod is provided with an end, and a corner compression spring is sleeved on the rod part. The U-shaped cover plate abuts against the ends of the guide rods under the action of the corner compression spring. A cylindrical top head is provided in the U-shaped opening of the U-shaped cover plate, and the cylindrical top head is fixed on the base plate.

[0008] Compared with the prior art, the above device has the following advantages.

[0009] The operation process of the device is as follows: Multiple built-in rings are poured into the vibrating bowl in batches. The vibrating bowl vibrates to make each built-in ring wind up along the track in a row and continue to enter the feeding chute in a row. The frontmost built-in ring will fall from the outlet of the feeding chute into the U-shaped bracket. More specifically, the built-in ring is caught by the notch of the U-shaped cover plate and stops advancing, and the built-in ring is placed and supported on the cylindrical head; Subsequently, the first Y-direction cylinder is driven to push the U-shaped bracket forward to send a single built-in ring directly below the bushing; At this time, the downward pressure driving cylinder is started to press down the bushing, so that the lower edge of the bushing abuts against the U-shaped cover plate, and continue to press down to make the U-shaped cover plate overcome the angular compression spring and descend, but the built-in ring is supported by the cylindrical head and remains stationary. In this way, a relative movement in the height direction occurs between the bushing and the built-in ring, resulting in the lower opening of the bushing covering the built-in ring and making the lower clamp of the bushing at the same height as the built-in ring, so as to automatically clamp and connect the built-in ring.

[0010] In summary, for this device, the worker only needs to pour the built-in rings into the vibrating bowl in batches at one time, and it can automatically send a single built-in ring below the bushing. The stationary cylindrical head and the elastic U-shaped cover plate cooperate with each other to make the built-in core in the U-shaped bracket automatically be clamped by the clamp at the lower opening of the bushing; that is, the process of batch feeding of the built-in rings is realized, and the single built-in ring is accurately conveyed and automatically clamped to the lower opening of the bushing; and the above process has a high degree of automation, does not require manual participation, is fast and efficient, saves the labor cost of one person, has high operation accuracy, and good economic benefits.

[0011] The first feeding device is preferably arranged as follows: The mounting frame is provided with a horizontal base plate. The area in front of the base plate and below the bushing is a downward pressure hollow area; The cylinder body of the first Y-direction cylinder is fixed to the base plate and the piston rod is fixed to a Y-direction sliding table; Two first sliders are fixed to the sliding table. The base plate is provided with two long Y-direction slide rails, and the two first sliders are slidably matched on the two Y-direction slide rails; The U-shaped bracket is fixed to the sliding table; In this way, the first Y-direction cylinder pushes the sliding table forward to make the U-shaped bracket reach the downward pressure hollow area; Moreover, the Y-direction slide rail is a long slide rail that extends the entire base plate from front to back, and the hollow area is arranged on the front side of the base plate. In this way, the Y-direction slide rail can extend and cover both sides of the hollow area, so as to provide a firm support for the sliding table and the U-shaped bracket pushed forward below the bushing, so as to ensure the smooth and stable support during the process of the bushing pressing down the U-shaped bracket and clamping the built-in ring from the U-shaped bracket.

[0012] As a gain, the rack is also provided with an X-direction conveyor belt and a motor for driving the conveyor belt. The rack is also provided with an X-direction channel above the conveyor belt, and multiple built-in cores are continuously brought closer together in a row within the X-direction channel. The rack is also provided with a gate cylinder for opening and closing the channel exit in the Y direction. The rack is also slidably fitted with a Y-direction carriage, and a second Y-direction cylinder is provided between the carriage and the rack. A gripper for grasping the built-in core that has left the channel and pushing it in the Y direction to the press-fitting equipment base is provided at the rear end of the cantilever plate of the carriage. The above conveyor belt, motor, X-direction channel, gate cylinder, carriage, second Y-direction cylinder, and gripper constitute the second feeding device.

[0013] The operation process of the second feeding device is as follows: Multiple built-in cores are gathered in a row within the X-direction channel and carried forward by the conveyor belt, and the first built-in core in the row is blocked by the piston of the gate cylinder. Retract the gate cylinder to release the first built-in core, and through the mutual cooperation of the opening and closing timing of the gate cylinder and the conveyor belt stroke, accurately convey a single built-in core to the target position, that is, directly in front of the gripper. Then drive the second Y-direction cylinder, drive the gripper to approach the corresponding built-in core through the Y-direction carriage, drive the gripper to grip the built-in core and continue to move forward, and then release and retract the gripper above the base, leaving the built-in core at the press-fitting station of the base, that is, the area where the base is directly below the press sleeve. From the above analysis, it can be seen that the second feeding device automatically and accurately conveys a single built-in core to the base and ensures that it is directly below the press sleeve. This process also does not require manual participation, further improving the degree of automation, being faster and more efficient, saving the labor cost of one person-time again, having high operation accuracy, and being able to align the built-in core directly below the press sleeve, ensuring the press-fitting quality and efficiency.

[0014] The second feeding device is preferably a machine frame with a discharge port in the area behind the support, and a discharge hopper is fixed to the discharge port; a positioning cylinder is provided at the bottom of the support, and a positioning pin is fixed to the piston rod of the positioning cylinder, the positioning pin passes through the support and is located directly below the press sleeve; when the air claw grabs the built-in core and pushes it directly below the press sleeve, the positioning pin on the positioning cylinder is inserted into the center hole of the built-in core; when the press sleeve carries the built-in ring and is pressed into the annular groove of the built-in core directly below, the positioning cylinder retracts the positioning pin to disengage it from the center hole of the built-in core. Let me first clarify a concept: the built-in core that has not been pressed into the built-in ring is a semi-finished product, and the built-in core that has been pressed into the built-in ring is a finished product. First of all, the position of the discharge port is particularly reasonably designed, just behind the press-fitting station, and a blocking guide cover is also set. In this way, when the air claw grasps the semi-finished built-in core and transports it to the base, the air claw will simultaneously push back the previous finished built-in core that is stranded in the press-fitting station, so that it just falls from the discharge hopper, that is, in one action, the two processes of automatic loading of semi-finished products and automatic discharge of finished products are completed simultaneously, which can achieve twice the result with half the effort, improve work efficiency, and strengthen the continuity of each process; moreover, when the air claw sends the next semi-finished built-in core to be assembled to the base, the air claw will automatically push the next semi-finished built-in core to be assembled to the base. When the supporting platform is being transported, the positioning cylinder retracts to disengage the positioning pin from the finished built-in core that is now stranded in the pressing station, ensuring that the finished built-in core will be smoothly squeezed out by the next semi-finished built-in core that arrives at the station, so as to ensure smooth discharge; and when the semi-finished built-in core arrives at the pressing station, the positioning cylinder directly below will push up the positioning pin again to insert it into the center hole of the semi-finished built-in core that has just arrived. In this way, the semi-finished product waiting to be pressed can be further corrected and its position locked, ensuring that the semi-finished product is accurately aligned with the pressing sleeve and the built-in ring, thereby ensuring the assembly quality.

[0015] The X-direction channel is preferably a rear baffle fixed on the frame, and the frame is also equipped with a front baffle rod for clamping a row of annular grooves of multiple built-in cores that are continuously close together, and the front baffle rod and the rear baffle rod constitute the X-direction channel; a longitudinal rod is fixed to the frame, and the front baffle rod is fixed to a cross rod; a transition block is provided between the cross rod and the longitudinal rod, and the transition block is provided with a longitudinal slot and a transverse slot, the longitudinal rod is clamped in the longitudinal slot of the transition block, and the longitudinal slot opening is screwed with a transverse adjustment screw, and the cross rod is clamped in the transverse slot of the transition block, and the transverse slot opening is screwed with a longitudinal adjustment screw; firstly, the structure of the rear baffle plate and the front baffle rod can The built-in cores are accurately gathered into a row, and the shift rod is just inserted into the annular groove of the built-in cores in the row, so as to provide more precise guidance for the built-in cores in the same row, so that they can rely on the close proximity of the rear baffle plate to avoid falling over; moreover, the structure of the above-mentioned channel is streamlined, the preparation and assembly are convenient, and the cost is low; furthermore, after loosening the horizontal or vertical adjustment screws, the Z and Y positions of the front shift rod can be easily adjusted to adapt to different batches of built-in cores, ensuring that the front shift rod can be inserted into the annular grooves of built-in cores of different heights and diameters, so that they are accurately gathered into a row, thereby improving the versatility of different batches of built-in cores.

[0016] The specific structure of the pressing sleeve is preferably that a pressing plate is fixed to the piston rod of the pressing drive cylinder, and the upper end of the pressing sleeve is connected to the pressing plate; a radially inwardly convex pressing ring for pressing down the built-in ring is provided on the side wall of the pressing sleeve, and a plurality of lower radial bolt holes are passed through the area of the side wall below the pressing ring, and ball screws for clamping the built-in ring are screwed into the lower radial bolt holes; in this way, the built-in ring is inserted from the lower opening of the pressing sleeve and abuts against the lower end of the pressing ring, and each ball screw will clamp the built-in ring radially inward; that is, the clamping force is provided by the compression spring in the ball screw, and the durability of the steel compression spring is significantly better than that of the elastic hoop of rubber. It is significantly enhanced, has a long service life, does not require frequent replacement, can save use costs, and reduces material waste; and the glass bead clamps the built-in ring, which is a point contact, and compared with the original clamp surface contact, the scratch damage to the built-in ring is small; and because the glass bead has a larger telescopic stroke, the diameter range of the built-in ring that can be clamped by the press sleeve is significantly increased, and it can clamp workpieces with an outer diameter in the range of 45 to 60 mm; furthermore, the press sleeve only needs to punch radial holes instead of chordal pin holes on the arc surface or arc plate, so the process requirements and preparation difficulty are reduced, which naturally reduces the cost.

[0017] The pressing sleeve is further preferably provided with a push ring that is slidably fitted inside the pressing sleeve, and a reset spring is also provided inside the pressing sleeve, and the push ring abuts against the upper end of the pressing ring under the action of the reset spring; the design purpose of the above structure is that the pressing sleeve presses down to cover the built-in core, and simultaneously carries the built-in ring to fit into the annular groove of the built-in core, and in this process, the built-in core pushes the push ring to compress the reset spring; and when the lifting drive cylinder drives the pressing sleeve to rise and reset, the push ring is affected by the reset spring to push down the built-in core, thereby preventing the built-in core from rising together with the reset pressing sleeve, so that the built-in core that has been pressed and installed can be smoothly separated from the pressing sleeve. Of course, the above push ring needs to cooperate with the positioning cylinder and the positioning pin, because when the push ring pushes down the built-in core of the finished product, the center hole of the built-in core is constrained by the positioning pin, which avoids the reset spring and the push ring from pressing down too hard, causing the built-in core of the finished product to rebound and leave the pressing station of the platform in advance and fail to discharge smoothly; that is, only when the built-in core of the finished product is completely separated from the pressing sleeve, the positioning pin will shrink inward, thereby ensuring that the built-in core of the finished product is just pushed and dropped into the discharge hopper by the next semi-finished product that arrives at the platform, and the material is discharged smoothly.

[0018] The connection structure between the upper end of the pressure sleeve and the pressure plate is preferably that a connecting head is fixedly connected to the lower surface of the pressure plate. An annular groove and an axial groove are provided on the side surface of the connecting head, and the top end of the axial groove communicates with the annular groove. The upper opening of the pressure sleeve sleeves the connecting head. A upper radial bolt hole is penetrated in the area of the pressure sleeve side wall near the upper opening. A quick-lock bolt is screwed in the upper radial bolt hole. The inner end of the quick-lock bolt slides into the annular groove through the axial groove and hooks the lower groove wall of the annular groove. In this way, only need to place the upper opening of the pressure sleeve below the connecting head, align the inwardly convex quick-lock bolt with the corresponding axial groove, then lift the pressure sleeve, so that the inner end of the quick-lock bolt slides vertically upward along the axial groove and then horizontally displaces along the annular groove, so as to hook the lower groove wall of the annular groove, and then screw the quick-lock bolt to make its inner end abut and lock against the bottom of the annular groove. Push the quick-lock bolt along the axial groove and the annular groove and slightly screw the quick-lock bolt inward, and the quick docking of the pressure sleeve and the pressure plate is completed within ten seconds. Compared with the existing technology connection structure that requires screwing the bolt four times, the speed of replacing the pressure sleeve of this preferred structure is significantly improved, and the operation is more rapid and convenient.

[0019] A further preference for the connection structure between the upper end of the pressure sleeve and the pressure plate is that a leveling annular rib is provided in the area of the pressure sleeve side wall near the upper opening. The upper radial bolt hole is located on the leveling annular rib, and the inner diameter of the leveling annular rib matches the normal outer diameter of the connecting head. The leveling annular rib is provided with two left and right notches for the pushing ring to pass over. The original intention of the above preference is that in order to adapt to a built-in core with a larger diameter, it is necessary to assemble a pressure sleeve with a larger inner diameter. However, there is naturally a gap between the pressure sleeve with a large inner diameter and the connecting head with a small outer diameter, resulting in unstable shaking at the docking place. Therefore, a leveling annular rib is added in the area of the pressure sleeve side wall near the upper opening to fill the leveling gap, so that the pressure sleeve and the connecting head match internally and externally, fit closely to each other, thus eliminating the gap and reducing the shaking, making it more stable. At the same time, in order to prevent the leveling annular rib from blocking the inner cavity of the pressure sleeve, two left and right notches are specially opened, just allowing the pushing ring to pass over the leveling annular rib and reach the installation position at the lower part of the inner cavity of the pressure sleeve.

[0020] A further preference for the pressure sleeve structure is that a gasket ring is also sleeved at the lower opening of the pressure sleeve. The upper end of the gasket ring abuts against the lower end of the pressure ring. A radial locking hole is also penetrated in the pressure sleeve side wall. A locking screw for fastening the gasket ring is screwed into the internal thread of the radial locking hole. In this way, the versatility of the pressure sleeve can be improved to match built-in rings with different axial heights. For example, if the axial distance between the pressure ring and the ball screw is 7 mm and the axial height of a certain batch of built-in rings is only 6 mm, after placing it into the lower opening of the pressure sleeve and abutting against the pressure ring, the ball screw simply cannot contact the built-in ring. Therefore, by padding the gasket ring between the built-in ring and the pressure ring, this radial height difference can be eliminated, ensuring that the ball screw firmly clamps the built-in ring, and the locking screw screwed into the radial locking hole fixes the gasket ring in the pressure sleeve to prevent it from falling off. Description of the Drawings

[0021] Figure 1 is a structural schematic diagram of the pressure sleeve of the prior art press-fitting device.

[0022] Figure 2 It is a schematic structural diagram of the device for press-fitting the built-in ring and the built-in core of the present invention.

[0023] Figure 3 It is Figure 2 a schematic structural diagram after deflecting a certain angle.

[0024] Figure 4 It is a schematic exploded structural diagram of the right U-shaped bracket of the first feeding device of the device of the present invention.

[0025] Figure 5 It is Figure 4 an enlarged schematic structural diagram of part A in

[0026] Figure 6 It is a schematic structural diagram of the built-in core and the built-in ring after assembly of the present invention.

[0027] Figure 7 It is a schematic structural diagram of the first feeding device of the device of the present invention.

[0028] Figure 8 It is a schematic structural diagram of the first feeding device of the device of the present invention after removing the mounting frame.

[0029] Figure 9 It is a schematic structural diagram of the second feeding device of the device of the present invention.

[0030] Figure 10 It is Figure 9 a schematic structural diagram after deflecting a certain angle.

[0031] Figure 11 It is Figure 9 an enlarged schematic structural diagram of part B in

[0032] Figure 12 It is Figure 10 an enlarged schematic structural diagram of part C in

[0033] Figure 13 It is Figure 10 a schematic structural diagram after deflecting a certain angle.

[0034] Figure 14 It is a schematic structural diagram of the pressure sleeve of the device of the present invention.

[0035] Figure 15 It is a schematic exploded structural diagram of the pressure sleeve of the device of the present invention.

[0036] Figure 16 It is Figure 15 a schematic structural diagram after deflecting a certain angle.

[0037] Figure 17 It is a schematic sectional structural diagram of the pressure sleeve of the device of the present invention.

[0038] Figure 18 It is a structural schematic diagram of the upper opening of the pressure sleeve of the device of the present invention after adding a leveling annular rib.

[0039] As shown in the figure, 1. mounting frame, 2. inner ring, 3. vibrating bowl, 4. feeding chute, 5. vibrator, 6. U-shaped bracket, 6.1 U-shaped cover plate, 6.2 guide rod, 6.3 end, 6.4 corner compression spring, 6.5 cylindrical head, 7. first Y-direction cylinder, 8. base plate, 9. lower hollow area, 10. slide table, 10.1 first slider, 11. bar, 12. Y-direction slide rail, 13. inner core, 14. conveyor belt, 15. motor, 16. tension belt, 17. frame, 18. front stop bar, 19. rear baffle, 20. L-shaped plate, 21. longitudinal rod, 22. cross bar, 23. transition block, 24. horizontal adjustment screw, 25. vertical adjustment screw, 26. gate cylinder, 27. slide frame, 28. second Y-direction cylinder, 29. second slider, 30. Y-direction track, 31. gripper, 32. bearing block, 33. discharge hopper, 34. guide cover, 35. positioning cylinder, 36. positioning pin, 37. gap, 38. pressure sleeve, 38.1 upper radial bolt hole, 38.2 pressure ring, 38.3 lower radial bolt hole, 39. electric cylinder, 40. pressure plate, 41. connector, 41.1 upper convex plate, 41.2 ring groove, 41.3 axial groove, 42. quick-lock bolt, 43. ball screw, 44. fastening nut, 45. spacer ring, 46. locking screw, 47. push ring, 48. return compression spring, 49. leveling annular rib, 49.1 notch. Detailed implementation manners

[0040] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0041] As Figures 2 to 18 shown, the device of the present invention for press-fitting the inner ring and the inner core includes a frame; the frame is provided with a press-fitting device, a first feeding device responsible for the inner ring 2, and a second feeding device responsible for the inner core 13.

[0042] The press-fitting device includes a bearing platform 32 and a downward pressing drive cylinder. The downward pressing drive cylinder is preferably an electric cylinder 39, and a pressing sleeve 38 with a downward opening is fixed to the piston rod of the electric cylinder 39. That is, a pressing plate 40 is fixed to the piston rod of the electric cylinder 39. The upper end of the pressing sleeve 38 is connected to the pressing plate 40, and its connection structure is preferably as follows. A connection head 41 is fixed to the lower surface of the pressing plate 40. That is, an upper convex plate 41.1 is provided at the upper end of the connection head 41, and the upper convex plate 41.1 is fixed to the pressing plate 40; a ring groove 41.2 and a plurality of axial grooves 41.3 are provided on the side surface of the connection head 41. In this embodiment, there are three axial grooves 41.3; the top ends of each axial groove 41.3 communicate with the ring groove 41.2; the upper opening of the pressing sleeve 38 sleeves the connection head 41, and three upper radial bolt holes 38.1 corresponding to the axial grooves 41.3 are penetrated in the area of the side wall of the pressing sleeve 38 near the upper opening. Three quick-lock bolts 42 are screwed into the three upper radial bolt holes 38.1. The inner ends of the quick-lock bolts 42 protrude inside the side wall of the pressing sleeve 38. The inner end of each quick-lock bolt 42 slides into the ring groove 41.2 through the corresponding axial groove 41.3 and hooks on the lower groove wall of the ring groove 41.2; the quick-lock bolt 42 is screwed so that its inner end abuts against the bottom of the ring groove 41.2 to lock the pressing sleeve 38 and prevent its circumferential dislocation.

[0043] A pressing ring 38.2 for downward pressing the built-in ring 2 is provided on the side wall of the pressing sleeve 38 and protrudes radially inward. The pressing ring 38.2 is located near the lower opening of the pressing sleeve 38. A fixture for clamping the built-in ring 2 is provided at the lower opening of the pressing sleeve 38. Specifically, a plurality of, such as three, lower radial bolt holes 38.3 are penetrated in the area of the side wall of the pressing sleeve 38 below the pressing ring 38.2. A ball screw 43 for clamping the built-in ring 2 is screwed into each lower radial bolt hole 38.3. The outer end of the housing of each ball screw 43 protrudes outside the lower radial bolt hole 38.3, and a fastening nut 44 is screwed on the protruding part of the housing of the ball screw 43. The fastening nut 44 abuts against the outer surface of the side wall of the pressing sleeve 38.

[0044] Under normal conditions, the built-in ring 2 sleeved into the lower opening of the pressing sleeve 38 abuts against the lower end of the pressing ring 38.2. However, the axial height of the built-in ring 2 in some batches is small, and it cannot be clamped by the ball screw 43 after abutting against the pressing ring 38.2. Therefore, a spacer ring 45 is additionally provided inside the lower opening of the pressing sleeve 38. The upper end of the spacer ring 45 abuts against the lower end of the pressing ring 38.2. The built-in ring 2 with insufficient axial height abuts against the spacer ring 45 to ensure that the built-in ring 2 is clamped by the ball screw 43; a radial locking hole is also penetrated in the side wall of the pressing sleeve 38, and a locking screw 46 is screwed into the internal thread of the radial locking hole. The locking screw 46 locks the spacer ring 45 to prevent it from falling out of the pressing sleeve 38.

[0045] A push ring 47 is slidably fitted inside the pressing sleeve 38, and a return compression spring 48 is also provided inside the pressing sleeve 38. The lower end of the return compression spring 48 abuts against the push ring 47, and the upper end of the return compression spring 48 abuts against the connection head 41; the push ring 47 abuts against the upper end of the pressing ring 38.2 under the action of the return compression spring 48.

[0046] Under normal conditions, the area of the side wall of the compression sleeve 38 near the upper opening is smooth without convex ribs. However, when the diameter of the built-in core 13 to be press-fitted is relatively large, a compression sleeve 38 with a larger inner diameter needs to be matched. At this time, the gap between the compression sleeve 38 and the connector 41 will expand. Therefore, a leveling annular convex rib 49 is provided in the area of the side wall of the compression sleeve 38 near the upper opening, and the three upper radial bolt holes 38.1 are also located on the leveling annular convex rib 49. The inner diameter of the leveling annular convex rib 49 matches the normal outer diameter of the connector 41; the normal outer diameter of the connector 41 refers to the outer diameter of other parts except the upper convex plate 41.1 and the annular groove 41.2. The inner diameter of the leveling annular convex rib 49 is generally 1.03 - 1.1 times the normal outer diameter of the connector 41. The leveling annular convex rib 49 is provided with two left and right notches 49.1 for the push ring 47 to pass over.

[0047] The first feeding device includes a mounting frame 1, a vibrating disk 3 for receiving a batch of built-in rings 2, and an X-direction feeding channel 4. The above-mentioned mounting frame 1, vibrating disk 3, and feeding channel 4 are all installed on the machine frame 17. The vibrating disk 3 is provided with a winding upward disk track, and each built-in ring 2 rises in a row along the disk track under the vibration of the vibrating disk 3. The disk track in the vibrating disk 3 belongs to mature existing technology, so it is not shown in the figure. The outlet of the disk track is communicated with the inlet of the feeding channel 4; a vibrator 5 is provided below the feeding channel 4.

[0048] The mounting frame 1 is provided with a U-shaped bracket 6 for receiving a single built-in ring 2 that falls from the outlet of the feeding channel 4. The mounting frame 1 is also provided with a first Y-direction cylinder 7 for pushing the U-shaped bracket 6 forward to directly below the compression sleeve 38. Specifically, a horizontal base plate 8 is provided in the middle of the mounting frame 1, and the area in front of the base plate 8 and below the compression sleeve 38 is a downward pressing hollow area 9; the base 32 of the pressing device is also located below the downward pressing hollow area 9. The cylinder block of the first Y-direction cylinder 7 is fixed to the base plate 8, and the piston rod of the first Y-direction cylinder 7 is fixed to a Y-direction sliding table 10; two first sliders 10.1 are fixed to the sliding table 10, and two long Y-direction slide rails 12 are provided on the base plate 8, and the two first sliders 10.1 are respectively slidably engaged on the two Y-direction slide rails 12; the U-shaped bracket 6 is fixed to the sliding table 10. The first Y-direction cylinder 7 advances the U-shaped bracket 6 to reach the downward pressing hollow area 9 by pushing the sliding table 10 forward.

[0049] A stop bar 11 is also provided in the area on the sliding table 10 behind the U-shaped bracket 6 for blocking subsequent built-in rings 2 from falling from the outlet of the feeding channel 4 when the sliding table 10 is pushed forward. The stop bar 11 corresponds to the U-shaped bracket 6 one by one, and each stop bar 11 is fixed to the rear end of the corresponding U-shaped bracket 6.

[0050] Each U-shaped bracket 6 includes a base plate and a U-shaped cover plate 6.1. The base plate is provided with multiple, such as 4, guide rods 6.2. Four mounting holes are provided at the four corners of the U-shaped cover plate 6.1. The U-shaped cover plate 6.1 is movably sleeved with the 4 guide rods 6.2 through the mounting holes at the four corners. A head 6.3 is provided at the top of each guide rod 6.2, and a compression spring 6.4 is sleeved on the rod part of each guide rod 6.2. The U-shaped cover plate 6.1 abuts against the heads 6.3 of the respective guide rods 6.2 under the action of the compression spring 6.4. A cylindrical head 6.5 is provided inside the U-shaped opening of the U-shaped cover plate 6.1, and the cylindrical head 6.5 is fixed on the base plate. A positioning chamfer is provided on the top surface of the cylindrical head 6.5.

[0051] The base plate of the U-shaped bracket 6 can be fixed on the base plate 8, or directly use a part of the base plate 8 as the base plate of the U-shaped bracket 6, and directly weld the respective guide rods 6.2 and the cylindrical head 6.5 on the base plate 8.

[0052] The structure of the second feeding device is as follows.

[0053] An X-direction conveyor belt 14 and a motor 15 for driving the conveyor belt 14 are provided on the frame 17. Specifically, the driving wheel of the conveyor belt 14 and the output shaft of the motor 15 are driven by a tension belt 16.

[0054] The frame 17 is also provided with an X-direction channel above the conveyor belt 14. A plurality of built-in cores 13 are continuously brought closer together in a row in the X-direction channel. The X-direction channel is composed of a front stop rod 18 and a rear baffle 19. The rear baffle 19 is actually the vertical plate of an L-shaped plate 20, and the horizontal plate of the L-shaped plate 20 is fixed to the frame 17. The annular grooves of a row of multiple built-in cores 13 are all caught by the front stop rod 18. The front stop rod 18 is installed on the frame 17. Specifically, a longitudinal rod 21 is fixed to the frame 17, and the front stop rod 18 is fixed to a cross bar 22. A transition block 23 is provided between the cross bar 22 and the longitudinal rod 21. The transition block 23 is provided with a longitudinal card slot and a transverse card slot. The longitudinal rod 21 is stuck in the longitudinal card slot of the transition block 23, and a transverse adjustment screw 24 is screwed at the opening of the longitudinal card slot. The cross bar 22 is stuck in the transverse card slot of the transition block 23, and a longitudinal adjustment screw 25 is screwed at the opening of the transverse card slot.

[0055] The frame 17 is also provided with a gate cylinder 26 for opening and closing the channel outlet along the Y direction.

[0056] The frame 17 is also slidably fitted with a Y-direction carriage 27, and a second Y-direction cylinder 28 is provided between the carriage 27 and the frame 17. Specifically, two second sliders 29 are provided at the bottom of the carriage 27, and two Y-direction rails 30 are fixed to the frame 17. The two second sliders 29 are slidably fitted with the two Y-direction rails 30. The cylinder block of the second Y-direction cylinder 28 is fixed inside the carriage 27, and the piston rod of the second Y-direction cylinder 28 is fixed to the frame 17. At the rear end of the cantilever plate at the top of the Y-direction carriage 27, there is a gripper 31 for grasping the built-in core 13 out of the separation channel and pushing it in the Y direction to the mounting table 32 of the pressing device.

[0057] The area of the mounting table 32 directly below the bushing 38 is the pressing station. The area of the frame 17 behind the mounting table 32 is hollowed out with a discharge port, and a discharge hopper 33 is fixed to the discharge port. A guide cover 34 is covered at the rear side of the discharge port to prevent the finished built-in core 13 from being pushed out of the range of the discharge port.

[0058] A positioning cylinder 35 is provided at the lower part of the mounting table 32. A positioning pin 36 is fixed to the piston rod of the positioning cylinder 35. The positioning pin 36 penetrates through the mounting table 32 and the positioning pin 36 is directly below the bushing of the pressing device. When the gripper 31 grasps the semi-finished built-in core 13 and pushes it to directly below the bushing, the positioning cylinder 35 jacks up the positioning pin 36 to insert into the central hole of the built-in core 13. After the bushing carries the inner ring and is pressed into the annular groove of the built-in core 13 directly below, the positioning cylinder 35 retracts the positioning pin 36 to disengage from the central hole of the finished built-in core 13 after pressing.

[0059] When the gripper 31 tightly holds the semi-finished built-in core 13 to the maximum extent, there is still a gap 37 between the two fingers at the front end of the gripper 31.

[0060] The above conveyor belt 14, motor 15, X-direction channel, gate cylinder, carriage, second Y-direction cylinder, gripper, etc. constitute the second feeding device.

Claims

1. A device for press-fitting an inner ring and an inner core, which comprises a frame; the frame is provided with a bearing platform and a downward pressing drive cylinder, a pressing sleeve is fixed to the piston rod of the downward pressing drive cylinder, and a fixture for clamping the inner ring is arranged at the lower opening of the pressing sleeve; characterized in that: The frame is also provided with a first feeding device, which includes a mounting frame, a vibrating plate and an X-direction feeding chute, a winding ascending disc is provided in the vibrating plate, and the disc outlet is connected with the feeding chute inlet; the mounting frame is provided with a U-shaped bracket for receiving a single built-in ring dropped from the feeding chute outlet, and the mounting frame is also provided with a first Y-direction cylinder for pushing the U-shaped bracket forward to the bottom of the pressing sleeve; the U-shaped bracket includes a base plate and a U-shaped cover plate, the base plate is provided with a plurality of guide rods, the U-shaped cover plate is movably fitted with each guide rod, each guide rod is provided with an end head at the top and an angle compression spring is provided on the rod part, the U-shaped cover plate abuts against the end heads of each guide rod under the action of the angle compression spring, a cylindrical head is provided in the U-mouth of the U-shaped cover plate, and the cylindrical head is fixed on the base plate.

2. The device for press-fitting the built-in ring and the built-in core according to claim 1, characterized in that: The mounting frame is provided with a transverse base plate, and the area on the front side of the base plate below the pressing sleeve is a downward pressing hollow area; the cylinder body of the first Y-direction cylinder is fixed to the base plate and the piston rod is fixed to a Y-direction slide; the slide is fixed with two first sliders, and the base plate is provided with two through-length Y-direction slide rails, and the two first sliders are slidably fitted on the two Y-direction slide rails; the U-shaped bracket is fixed on the slide.

3. The device for press-fitting an inner ring and an inner core according to claim 1, characterized in that: The frame is also provided with an X-direction conveyor belt and a motor for driving the conveyor belt. The frame is also provided with an X-direction channel located above the conveyor belt, and a plurality of built-in cores are continuously brought together in a row in the X-direction channel; the frame is also provided with a gate cylinder for opening and closing the channel outlet along the Y-direction; the frame is also slidably matched with a Y-direction slide, and a second Y-direction cylinder is provided between the slide and the frame; an air claw is provided at the rear end of the cantilever plate of the slide for grabbing the built-in core that has left the channel and pushing it to the platform along the Y-direction; the above-mentioned conveyor belt, motor, X-direction channel, gate cylinder, slide, second Y-direction cylinder, and air claw constitute a second feeding device.

4. The device for press-fitting the built-in ring and the built-in core according to claim 3, characterized in that: The area of the frame located behind the pedestal is hollowed out with a discharge port, and a discharge hopper is fixed to the discharge port; a positioning cylinder is provided at the lower part of the pedestal, and a positioning pin is fixed to the piston rod of the positioning cylinder. The positioning pin passes through the pedestal and is located directly below the pressing sleeve; when the air claw grabs the built-in core and pushes it to directly below the pressing sleeve, the positioning pin pushed up by the positioning cylinder is inserted into the center hole of the built-in core; when the pressing sleeve carries the built-in ring and is pressed into the annular groove of the built-in core directly below, the positioning cylinder retracts the positioning pin to make it separate from the center hole of the built-in core.

5. The device for press-fitting an inner ring and an inner core according to claim 3, characterized in that: A rear baffle is fixed on the frame, and the frame is also equipped with a front baffle rod for clamping a row of annular grooves of multiple built-in cores that are continuously close together, and the front baffle rod and the rear baffle rod constitute an X-direction channel; a longitudinal rod is fixed to the frame, and the front baffle rod is fixed to a cross rod; a transition block is provided between the cross rod and the longitudinal rod, and the transition block is provided with a longitudinal slot and a transverse slot, the longitudinal rod is clamped in the longitudinal slot of the transition block, and the longitudinal slot opening is screwed with a transverse adjustment screw, and the cross rod is clamped in the transverse slot of the transition block, and the transverse slot opening is screwed with a longitudinal adjustment screw.

6. The device for press-fitting the built-in ring and the built-in core according to claim 1 or 4, characterized in that: The piston rod of the downward pressure driving cylinder is fixed with a pressure plate, and the upper end of the pressure sleeve is connected to the pressure plate; the side wall of the pressure sleeve is provided with a radially inwardly convex pressure ring for pressing down the built-in ring, and the area of the side wall below the pressure ring is penetrated by multiple lower radial bolt holes, and ball screws for clamping the built-in ring are screwed into the lower radial bolt holes.

7. The device for press-fitting an inner ring and an inner core according to claim 6, characterized in that: A push ring is slidably fitted inside the pressure sleeve. A return compression spring is also provided inside the pressure sleeve. The push ring abuts against the upper end of the pressure ring under the action of the return compression spring.

8. The device for press-fitting an inner ring and an inner core according to claim 7, characterized in that: A connecting head is fixedly connected to the lower surface of the pressure plate. A ring groove and an axial groove are provided on the side surface of the connecting head. The top end of the axial groove communicates with the ring groove. The upper opening of the pressure sleeve sleeves the connecting head. A upper radial bolt hole is penetrated in the area of the pressure sleeve side wall near the upper opening. A quick-lock bolt is screwed into the upper radial bolt hole. The inner end of the quick-lock bolt slides into the ring groove through the axial groove and hooks on the lower groove wall of the ring groove.

9. The device for press-fitting the built-in ring and the built-in core according to claim 8, characterized in that: A leveling annular rib is provided in the area of the pressure sleeve side wall near the upper opening. The upper radial bolt hole is located on the leveling annular rib. The inner diameter of the leveling annular rib matches the normal outer diameter of the connecting head. The leveling annular rib is provided with two left and right notches for the push ring to pass over.

10. The device for press-fitting an inner ring and an inner core according to claim 6, characterized in that: A gasket ring is also sleeved on the lower opening of the pressure sleeve. The upper end of the gasket ring abuts against the lower end of the pressure ring. A radial locking hole is also penetrated in the pressure sleeve side wall. A locking screw for fastening the gasket ring is screwed into the internal thread of the radial locking hole.

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