Bicycle spindle press fitting system

Abstract

The application discloses a bicycle middle shaft press-fitting processing system, which comprises a base, a press-fitting table is fixedly connected to the upper surface of the base through a support, a driving block is fixedly connected to the press-fitting table in a penetrating mode, and a press-fitting mechanism is arranged at the driving block. The press-fitting mechanism comprises a hydraulic cylinder, the hydraulic cylinder is fixedly connected to the side wall of the driving block, the cross section of the driving block is in the shape of a concave character with an opening facing downward, a sliding hole is formed in the side wall of the driving block, a lifting plate is slidably connected to the driving block through the sliding hole, a fixing block is fixedly connected to the lifting plate in a penetrating mode, the fixing block is in a hollow structure with an open top wall, a sliding plate is sealingly and slidably connected into the fixing block, and the sliding plate is fixedly connected to the output end of the hydraulic cylinder. The press-fitting processing system can realize automatic detection and automatic feeding and discharging, has a higher degree of automation, greatly improves processing efficiency, and has higher safety.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pressing machine tools, in particular to a bicycle middle shaft pressing machining system. BACKGROUND

[0002] There are various means of transportation, among which bicycles are undoubtedly the best means of transportation for short trips, not only green and environmentally friendly, but also can serve the purpose of exercising the body. The bicycle usually adopts chain transmission, and the rider pedals the pedal through the transmission of the chain to drive the rear wheel to rotate to drive the bicycle forward. The rotation of the pedal cannot be separated from the bicycle middle shaft, which plays a role in bearing the weight of the rider, ensuring the smooth rotation of the pedal, bearing the bumps and impacts of the road surface, and transmitting power. The bicycle middle shaft is usually composed of a shaft sleeve and a bearing, and the shaft sleeve is covered with an outer shell. In the production process, the bearing needs to be pressed into the shaft sleeve through a pressing machining system.

[0003] In the prior art, the existing middle shaft pressing is generally placed by the processing personnel after placing the shaft sleeve, and then the bearing is placed, and then the pressing machine tool is pressed. In the pressing process, whether the bearing is placed horizontally is determined by artificial judgment, and artificial judgment has certain error. If the bearing is not placed horizontally, it will cause abnormal noise during riding after the middle shaft is installed, affecting comfort, and seriously it will cause the shaft sleeve to be directly scrapped. At the same time, in the production process, the manual feeding and discharging mode not only has high labor intensity, but also has low efficiency. In the placing process, the hand needs to be operated below the hydraulic cylinder, which has the risk of being pressed due to misoperation. SUMMARY

[0004] The purpose of the present application is to solve the problems in the prior art and provide a bicycle middle shaft pressing machining system.

[0005] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0006] A bicycle middle shaft pressing machining system, comprising a base, a pressing table is fixedly connected to the upper surface of the base through a support, a driving block is fixedly connected to the pressing table in a penetrating manner, and a pressing mechanism is arranged at the driving block;

[0007] The pressing mechanism comprises a hydraulic cylinder, the hydraulic cylinder is fixedly connected with the side wall of the driving block, the cross section of the driving block is a downward-opening concave shape, a sliding hole is formed in the side wall of the driving block, a lifting plate is slidably connected to the driving block through the sliding hole, a fixed block is fixedly connected to the lifting plate in a penetrating manner, the fixed block is a hollow structure with an open top wall, a sliding plate is sealingly and slidably connected in the fixed block, and the sliding plate is fixedly connected with the output end of the hydraulic cylinder.

[0008] Further, the pressing mechanism further comprises a plurality of pressure springs fixedly connected with the lower surface of the fixed block, the pressure springs are fixedly connected with a pressing head, four conductive blocks are fixedly connected with the side wall on the opposite side of the fixed block, an indicator light is fixedly connected with the upper surface of the driving block, and the conductive blocks and the indicator light are electrically connected through wires.

[0009] Further, the driving mechanism is arranged at the driving block and the pressing table, the driving mechanism comprises a first shaft, the first shaft is rotatably connected with the pressing table through a bearing, the first shaft is fixedly connected with a first gear and a first bevel gear, a torsion spring is fixedly connected between the first gear and the pressing table, a control block is fixedly connected with the lower surface of the lifting plate, the control block is hollow and has an open side wall structure, a sliding block is sealingly and slidably connected with the control block, a rack is fixedly connected with one end of the sliding block outside the control block, the rack is engaged with the first gear, the fixed block and the control block are fixedly connected with a first pipe, and the fixed block and the control block are filled with hydraulic oil.

[0010] Further, the pressing table is rotatably connected with a second shaft through a bearing, the top end of the second shaft is fixedly connected with a rotating plate, a plurality of sleeve holes are formed in the rotating plate, the bottom end of the second shaft is rotatably connected with a second bevel gear through a one-way bearing, the second bevel gear is engaged with the first bevel gear, and the pressing table is provided with a feeding hole and a discharging hole.

[0011] Further, the base is provided with a feeding mechanism at the pressing table, the feeding mechanism comprises a first material cylinder, the first material cylinder is fixedly connected with the lower surface of the pressing table through bolts, a groove is formed in the base, a third shaft and a threaded cylinder are rotatably connected with the bottom wall in the groove through bearings, the third shaft is rotatably connected with a third bevel gear through a one-way bearing, the third bevel gear is engaged with the first bevel gear, the threaded cylinder is fixedly connected with a third gear, the third shaft is fixedly connected with a second gear, the second gear is engaged with the third gear, the threaded cylinder is threadedly connected with a screw rod, and the top end of the screw rod outside the threaded cylinder is fixedly connected with a top block.

[0012] Further, the feeding mechanism further comprises a sliding sleeve, the sliding sleeve is fixedly connected with the upper surface of the pressing table, the upper surface of the sliding sleeve is fixedly connected with a second material cylinder through a rod, the sliding sleeve is sealingly and slidably connected with a feeding block, a liquid groove is formed in the inner side wall of the groove, a reciprocating block is sealingly and slidably connected in the liquid groove, a plurality of return springs are fixedly connected between the reciprocating block and the inner side wall of the groove, the base, the pressing table and the sliding sleeve are fixedly connected with a second pipe, the second pipe communicates the sliding sleeve with the liquid groove, and the liquid groove and the sliding sleeve are filled with hydraulic oil.

[0013] Further, the inner side wall of the groove is fixedly connected with a mounting plate, the third shaft and the threaded cylinder are both rotatably connected with the mounting plate through bearings, the lower surface of the top block is fixedly connected with a limiting rod, and the limiting rod is slidingly connected with the mounting plate.

[0014] Further, the cross section of the reciprocating block and the sliding block are both T-shaped.

[0015] The present application has the following advantages:

[0016] 1. During the pressing process, the pressure head contacts the bearing, and then the bearing is pressed into the shaft sleeve by applying pressure. During the contact process, if the bearing is placed horizontally, the pressure head will move vertically up and down after contacting, so that the four groups of conductive blocks are in contact, thereby causing the indicator light to light up. If it is not horizontal, the indicator light will not light up after contacting, thereby detecting the horizontal state before pressing to avoid the bearing being pressed in an inclined manner.

[0017] 2. After the pressing is completed, during the resetting process of the pressure head, the meshing of the rack and the first gear drives the first shaft to rotate, and then the meshing of the first bevel gear and the second bevel gear causes the rotation of the rotating plate, so that the pressed part is rotated to the discharging hole, and then falls through the discharging hole, thereby completing automatic discharging without manual discharging, and improving the processing efficiency.

[0018] 3. After the rotating plate rotates, the rack rises until the rack and the first gear disengage, the elastic force of the torsion spring is released, the first shaft is reversed, the first bevel gear drives the third bevel gear to rotate, and then the meshing of the second gear and the third gear causes the threaded cylinder to rotate, and the threaded connection causes the screw rod to drive the top block to rise, thereby completing the automatic feeding of the shaft sleeve without manual feeding, and improving the processing efficiency.

[0019] 4. During the rotation of the second gear, the third gear is driven to rotate and then disengages from the second gear, and then contacts the reciprocating block to drive the reciprocating block to slide into the liquid tank, and the transmission of the hydraulic oil drives the reciprocating block to move the feeding block to push the bearing above the shaft sleeve, thereby completing the automatic feeding of the bearing without manual feeding, and further improving the efficiency.

[0020] 5. Through automatic feeding and discharging, the processing personnel only need to operate the hydraulic cylinder, without needing to be close to the lower part of the hydraulic cylinder, thereby avoiding the pressure injury caused by misoperation, and further improving the safety of the pressing machine tool.

[0021] 6. The present application only needs one hydraulic cylinder to complete the pressing, automatic feeding and discharging, and other operations, thereby making the operation of the machine tool more simple and easy to operate, and greatly reducing the equipment cost. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1A structure diagram of a bicycle middle shaft press-fitting processing system according to the present application;

[0023] Figure 2 An internal structure diagram of the bicycle middle shaft press-fitting processing system according to the present application;

[0024] Figure 3 An enlarged view of A in Figure 2 ;

[0025] Figure 4 An enlarged view of B in Figure 2 ;

[0026] Figure 5 An enlarged view of C in Figure 2 ;

[0027] Figure 6 An internal structure diagram of the bicycle middle shaft press-fitting processing system according to the present application under another cross section;

[0028] Figure 7 An internal structure diagram of a driving block of the bicycle middle shaft press-fitting processing system according to the present application;

[0029] Figure 8 A structure diagram of a press-fitting table of the bicycle middle shaft press-fitting processing system according to the present application;

[0030] Figure 9 A structure diagram of a press-fitting mechanism of the bicycle middle shaft press-fitting processing system according to the present application.

[0031] In the figure: 1, base; 2, press-fitting table; 3, driving block; 4, hydraulic cylinder; 5, sliding hole; 6, lifting plate; 7, fixed block; 8, sliding plate; 9, pressure spring; 10, press head; 11, conductive block; 13, indicator light; 14, control block; 15, sliding block; 16, first pipe; 17, rack; 18, first shaft; 19, first gear; 20, torsion spring; 21, first bevel gear; 22, second shaft; 23, second bevel gear; 24, rotating plate; 25, sleeve hole; 26, groove; 27, third shaft; 28, third bevel gear; 29, second gear; 30, threaded cylinder; 31, third gear; 32, screw rod; 33, top block; 34, first material cylinder; 35, mounting plate; 36, limiting rod; 37, liquid tank; 38, reciprocating block; 39, return spring; 40, sliding sleeve; 41, feeding block; 42, second pipe; 43, second material cylinder; 44, feeding hole; 45, discharging hole. DETAILED DESCRIPTION

[0032] Referring to Figures 1-9The utility model provides a bicycle middle shaft press -fit processing system, including base 1, the upper surface of base 1 is fixedly connected with press -fit platform 2 through support, press -fit platform 2 is fixedly connected with drive block 3, and drive block 3 is provided with press -fit mechanism at place.

[0033] Press -fit mechanism includes hydraulic cylinder 4, and hydraulic cylinder 4 is fixedly connected with the side wall of drive block 3, and the section of drive block 3 is concave character shape with the opening downward, and the side wall of drive block 3 is opened with sliding hole 5, and drive block 3 is slidably connected with lifting plate 6 through sliding hole 5, and lifting plate 6 is fixedly connected with fixed block 7, as shown in it, Figure 2 Fixed block 7 and lifting plate 6 are fixedly connected with the part of drive block 3 outside, and fixed block 7 is the structure of hollow and open top wall, and sliding plate 8 is slidably connected in fixed block 7, and sliding plate 8 is fixedly connected with the output end of hydraulic cylinder 4, and press -fit mechanism further includes a plurality of pressure springs 9, and pressure spring 9 is fixedly connected with the lower surface of fixed block 7, and pressure head 10 is fixedly connected with four conductive blocks 11 on the side wall of the opposite side of fixed block 7, and drive block 3 is fixedly connected with indicating lamp 13, and conductive block 11 is electrically connected with indicating lamp 13 through wire, when four groups of conductive blocks 11 are contacted correspondingly, indicating lamp 13 can be lit, the output shaft of hydraulic cylinder 4 is stretched, drives lifting plate 6 to descend, so that pressure head 10 contacts bearing and press -fits bearing into the sleeve, and during the press -fitting process, if the bearing is horizontal, when pressure head 10 contacts bearing, it will vertically rise and make four groups of conductive blocks 11 contact simultaneously, so that indicating lamp 13 is lit, and if the bearing is inclined, four groups of conductive blocks 11 cannot contact simultaneously, so that indicating lamp 13 is not lit, when penetrating to indicating lamp 13 is not lit, it needs to stop adjusting, during the press -fitting process, the levelness of bearing is detected automatically, avoids that the inclined bearing press -fitting leads to defective product, and compared with the manual judgment of prior art, it is more accurate.

[0034] The driving block 3 is provided with a driving mechanism at the pressing station 2, the driving mechanism comprises a first shaft 18, the first shaft 18 is rotatably connected with the pressing station 2 through bearings, the first shaft 18 is fixedly connected with a first gear 19 and a first bevel gear 21, a torsion spring 20 is fixedly connected between the first gear 19 and the pressing station 2, the lower surface of the lifting plate 6 is fixedly connected with a control block 14, the control block 14 is hollow and the side wall is open, the control block 14 is slidably connected with a sliding block 15, one end of the sliding block 15 outside the control block 14 is fixedly connected with a rack 17, the rack 17 is engaged with the first gear 19, the fixed block 7 and the control block 14 are fixedly connected with a first pipe 16, the fixed block 7 and the control block 14 are filled with hydraulic oil, when the pressing is carried out, the hydraulic cylinder 4 is started, the hydraulic cylinder 4 drives the sliding plate 8 to slide down first, the sliding of the sliding plate 8 drives the sliding block 15 to slide, so that the rack 17 moves, so that the downward movement of the rack 17 does not engage with the first gear 19 during the pressing process, that is, the first gear 19 does not rotate during the pressing process, and vice versa, when the rack 17 is reset, it will engage with the first gear 19 and drive it to rotate.

[0035] It should be noted that the sliding connection between the lifting plate 6 and the driving block 3 is provided with a damping pad, so that there is a certain frictional resistance between the two, so that when the hydraulic cylinder 4 is started, the sliding plate 8 will slide first, and when the sliding plate 8 cannot continue to slide, the lifting plate 6 will be lowered, so as to control the position of the rack 17 first and then press.

[0036] The pressing station 2 is rotatably connected with a second shaft 22 through bearings, the top end of the second shaft 22 is fixedly connected with a rotating plate 24, the rotating plate 24 is provided with a plurality of sleeve holes 25, the bottom end of the second shaft 22 is rotatably connected with a second bevel gear 23 through a one-way bearing, the setting of the one-way bearing enables the rack 17 to drive the first gear 19 to rotate and then drive the second shaft 22 to rotate, at this time, the first bevel gear 21 drives the second bevel gear 23 to rotate, and the second bevel gear 23 can drive the second shaft 22 to rotate through the one-way bearing, and vice versa, the second bevel gear 23 is engaged with the first bevel gear 21, the pressing station 2 is provided with a feeding hole 44 and a discharging hole 45, the diameters of the feeding hole 44 and the discharging hole 45 are consistent with those of the sleeve holes 25, the rotation of the first shaft 18 drives the first bevel gear 21 to rotate, and the rotation of the first bevel gear 21 drives the second bevel gear 23 and a third bevel gear 28 engaged therewith to rotate, and due to the setting of the one-way bearing, the second bevel gear 23 drives the second shaft 22 to rotate at this time, and the parts after pressing are rotated to the discharging hole 45, and then fall down through the discharging hole 45 and are collected in a collecting box arranged below, so as to realize automatic discharging without manual discharging, and greatly improve the processing efficiency.

[0037] The base 1 and the press-fitting table 2 are provided with a feeding mechanism, the feeding mechanism comprises a first material cylinder 34, the first material cylinder 34 is fixedly connected with the lower surface of the press-fitting table 2 through bolts, the bolted connection enables the first material cylinder 34 to be freely disassembled, so that the shaft sleeve in the first material cylinder 34 can be supplemented, a groove 26 is formed in the base 1, a third shaft 27 and a threaded cylinder 30 are rotatably connected to the bottom wall in the groove 26 through bearings, the third shaft 27 penetrates and is rotatably connected to a third bevel gear 28 through a one-way bearing, the one-way bearing between the third shaft 27 and the third bevel gear 28 enables the rack 17 to disengage from the first gear 19, and the first gear 19 reverses under the elastic force of the torsion spring 20, at this time, when the first bevel gear 21 rotates to drive the second bevel gear 23 to rotate, the second bevel gear 23 will relatively rotate with the second shaft 22, but will not drive the second shaft 22 to rotate, the third bevel gear 28 can drive the third shaft 27 to rotate through the one-way bearing, the third bevel gear 28 meshes with the first bevel gear 21, the threaded cylinder 30 penetrates and is fixedly connected to a third gear 31, the third shaft 27 penetrates and is fixedly connected to a second gear 29, the second gear 29 meshes with the third gear 31, the threaded cylinder 30 is threadedly connected to a screw rod 32, one end of the screw rod 32 fixedly connected to a top block 33 outside the threaded cylinder 30, the elastic force accumulated by the torsion spring 20 is released, so that the first gear 19 drives the first shaft 18 to reverse, when the first shaft 18 reverses, the first bevel gear 21 rotates to drive the second bevel gear 23 and the third bevel gear 28 which mesh with it to rotate, and due to the arrangement of the one-way bearing, the third bevel gear 28 drives the third shaft 27 to rotate, so that the second gear 29 rotates, when the second gear 29 rotates, it first meshes with the third gear 31 to drive it to rotate, so that the threaded cylinder 30 rotates, the threaded connection enables the screw rod 32 to drive the top block 33 to rise, the shaft sleeve in the first material cylinder 34 is topped into the sleeve hole 25 of the rotating plate 24 through the feeding hole 44, so that the automatic feeding of the shaft sleeve is completed, manual feeding is not required, the degree of automation of the machine tool is further improved, and the processing efficiency is improved.

[0038] The upper feeding mechanism further comprises a sliding sleeve 40 fixedly connected with the upper surface of the pressing table 2, a second barrel 43 fixedly connected with the upper surface of the sliding sleeve 40 through a rod, an upper feeding block 41 sealingly and slidingly connected with the sliding sleeve 40, a liquid groove 37 formed in the inner side wall of the groove 26, a reciprocating block 38 sealingly and slidingly connected in the liquid groove 37, a plurality of return springs 39 fixedly connected between the reciprocating block 38 and the inner side wall of the groove 26, and a second pipe 42 fixedly and penetratingly connected with the base 1, the pressing table 2 and the sliding sleeve 40, which communicates the sliding sleeve 40 with the liquid groove 37. The liquid groove 37 and the sliding sleeve 40 are both filled with hydraulic oil. With the continuous rotation of the second gear 29, the second gear 29 is disengaged from the third gear 31 and contacts the reciprocating block 38, and the reciprocating block 38 is driven to move. Through the transmission of the hydraulic oil, the movement of the reciprocating block 38 drives the upper feeding block 41 to slide and pushes the bearing to above the shaft sleeve, waiting for pressing. When the rotation of the second gear 29 is completed, the second gear 29 is engaged with the third gear 31 again. Under the elastic force of the return spring 39, the reciprocating block 38 slides to the outside of the liquid groove 37, so that the upper feeding block 41 is reset. At this time, under the action of gravity, the bearing in the second barrel 43 falls down, waiting for the next feeding, so as to complete the automatic feeding of the bearing. Combined with the automatic feeding of the shaft sleeve, the whole automatic feeding process is completed, the machining efficiency is improved, and the labor intensity is reduced.

[0039] It is worth mentioning that, in the use process of the present application, only the hydraulic cylinder 4 needs to be operated, the operation is simple, and at the same time, the hands of the processing personnel do not need to be close to the lower side of the hydraulic cylinder 4, avoiding the situation that the misoperation causes pressure injury, greatly improving the safety of the machine tool.

[0040] As shown in Figure 6 The second gear 29 is an incomplete gear. In the rotation process, the second gear 29 is first rotated to drive the third gear 31 to rotate, and then is disengaged from the third gear 31 and contacts the reciprocating block 38 to drive the reciprocating block 38, playing the role of a cam.

[0041] The inner side wall of the groove 26 is fixedly connected with a mounting plate 35, the third shaft 27 and the threaded barrel 30 are both rotatably connected with the mounting plate 35 through bearings, the lower surface of the top block 33 is fixedly connected with a limiting rod 36, and the limiting rod 36 is slidingly connected with the mounting plate 35. The mounting plate 35 plays a certain supporting role for the third shaft 27 and the threaded barrel 30, ensuring the stable rotation thereof. The limiting rod 36 ensures the stable up-and-down movement of the top block 33, avoiding the situation that the top block 33 rotates together with the threaded barrel 30.

[0042] The cross sections of the reciprocating block 38 and the sliding block 15 are both T-shaped, and the T-shaped structure plays a certain limiting role, avoiding excessive sliding.

[0043] In the present application, the shaft sleeve is installed in the first barrel 34, and the bearing is installed in the second barrel 43. At this time, the hydraulic cylinder 4 is started.

[0044] The hydraulic cylinder 4 is started to extend, first makes the sliding plate 8 slide down, the hydraulic oil in the fixed block 7 is pressed into the control block 14 through the first pipe 16, so that the sliding block 15 slides, drives the rack 17 to move, and then the sliding plate 8 cannot continue to slide, at this time the output shaft of the hydraulic cylinder 4 continues to extend, then drives the lifting plate 6 to descend, so that the pressure head 10 contacts with the bearing and the bearing is pressed into the shaft sleeve, and in the pressing process, if the bearing is horizontal, at this time the pressure head 10 contacts with the bearing, rises vertically, and makes four groups of conductive blocks 11 contact at the same time, so that the indicator light 13 is lit, and if the bearing is inclined, at this time the four groups of conductive blocks 11 cannot contact at the same time, at this time the indicator light 13 is not lit, when the indicator light 13 is not lit, the machine needs to be stopped for adjustment.

[0045] After the pressing is completed, the hydraulic cylinder 4 is operated to reset, and in the resetting process, the sliding plate 8 is first made to slide up, the hydraulic oil in the control block 14 is drawn back into the fixed block 7, so that the sliding block 15 drives the rack 17 to reset, at this time the rack 17 is engaged with the first gear 19, and at the same time the sliding plate 8 cannot continue to slide up, the hydraulic cylinder 4 drives the lifting plate 6 to rise, the lifting plate 6 drives the rack 17 to rise together, so that the rack 17 drives the first gear 19 to rotate, the first gear 19 rotates on one hand to accumulate the elastic force of the torsion spring 20, and on the other hand drives the first shaft 18 to rotate, the first shaft 18 rotates to drive the first bevel gear 21 to rotate, the first bevel gear 21 rotates to drive the second bevel gear 23 and the third bevel gear 28 engaged therewith to rotate, and due to the setting of the one-way bearing, at this time the second bevel gear 23 drives the second shaft 22 to rotate, and the third bevel gear 28 relatively rotates the third shaft 27, the rotation of the second shaft 22 drives the rotating plate 24 to rotate, and the pressed component is rotated to the discharging hole 45, the pressed component falls through the discharging hole 45 and is collected in the collecting box arranged below.

[0046] With the continuous rising of the rack 17, until the hydraulic cylinder 4 is completely reset, at this time the rack 17 is disengaged from the first gear 19, so that the elastic force accumulated by the torsion spring 20 is released, so that the first gear 19 drives the first shaft 18 to reverse, when the first shaft 18 reverses, the first bevel gear 21 rotates to drive the second bevel gear 23 and the third bevel gear 28 engaged therewith to rotate, and due to the setting of the one-way bearing, at this time the second bevel gear 23 relatively rotates the second shaft 22, and the third bevel gear 28 drives the third shaft 27 to rotate, so that the second gear 29 rotates, when the second gear 29 rotates, it is first engaged with the third gear 31 to drive it to rotate, so that the threaded cylinder 30 rotates, and through the threaded connection, the screw rod 32 drives the top block 33 to rise, and the shaft sleeve in the first material cylinder 34 is topped into the sleeve hole 25 of the rotating plate 24 through the feeding hole 44.

[0047] And with the second gear 29 continues to rotate, it is disengaged from the third gear 31, and with the reciprocating block 38 contact, and reciprocating block 38, through the drive of hydraulic oil, the movement of the reciprocating block 38 drive the upper block 41 slip, the bearing is pushed to the shaft sleeve above, waiting for the press, while the second gear 29 rotation is completed, it restores the engagement with the third gear 31, at the same time in the elastic force of the reset spring 39, the reciprocating block 38 to the outside of the liquid tank 37 slide, so that the upper block 41 reset, at this time under the action of gravity, the bearing in the second barrel 43 fall, waiting for the next time the loading.

[0048] After the unloading and loading is completed, the hydraulic cylinder 4 is opened again, and the press is carried out. Thus, the press is carried out repeatedly, and the press processing can be carried out.

Claims

1. A bicycle bottom bracket press-fitting system, comprising a base, characterized in that, A pressing platform is fixedly connected to the upper surface of the base via a bracket. A drive block is fixedly connected through the pressing platform, and a pressing mechanism is provided at the drive block. The pressing mechanism includes a hydraulic cylinder, which is fixedly connected to the side wall of the drive block. The cross-section of the drive block is a U-shaped opening facing downwards. A sliding hole is provided on the side wall of the drive block. A lifting plate is slidably connected to the drive block through the sliding hole. A fixed block is fixedly connected to the lifting plate. The fixed block is a hollow structure with an open top wall. A sliding plate is slidably connected inside the fixed block. The sliding plate is fixedly connected to the output end of the hydraulic cylinder. The pressing mechanism also includes multiple pressure springs, which are fixedly connected to the lower surface of the fixed block. The pressure springs are all fixedly connected to the pressure head. Four conductive blocks are fixedly connected to the side wall of the pressure head on the opposite side of the fixed block. An indicator light is fixedly connected to the upper surface of the drive block. The conductive blocks and the indicator light are electrically connected through wires. A drive mechanism is provided at the drive block and the pressing table. The drive mechanism includes a first shaft, which is rotatably connected to the pressing table through a bearing. A first gear and a first bevel gear are fixedly connected through the first shaft. A torsion spring is fixedly connected between the first gear and the pressing table. A control block is fixedly connected to the lower surface of the lifting plate. The control block is a hollow structure with an open sidewall. A slider is slidably connected to the control block. A rack is fixedly connected to one end of the slider outside the control block. The rack meshes with the first gear. A first pipe is fixedly connected through both the fixed block and the control block. Both the fixed block and the control block are filled with hydraulic oil. The pressing table is rotatably connected to a second shaft through a bearing. A rotating plate is fixedly connected to the top of the second shaft. The rotating plate has multiple sleeve holes. The bottom of the second shaft is rotatably connected to a second bevel gear through a one-way bearing. The second bevel gear meshes with the first bevel gear. The pressing table has a loading hole and a unloading hole. A feeding mechanism is provided at the base and the pressing table. The feeding mechanism includes a first material cylinder, which is fixedly connected to the lower surface of the pressing table by bolts. A groove is provided in the base. A third shaft and a threaded cylinder are rotatably connected to the bottom wall of the groove through a bearing. A third bevel gear is rotatably connected to the third shaft through a one-way bearing. The third bevel gear meshes with the first bevel gear. A third gear is fixedly connected to the threaded cylinder. A second gear is fixedly connected to the third shaft. The second gear meshes with the third gear. A screw is threadedly connected to the threaded cylinder. A top block is fixedly connected to one end of the screw located outside the threaded cylinder. The feeding mechanism also includes a sliding sleeve, which is fixedly connected to the upper surface of the pressing table. A second material cylinder is fixedly connected to the upper surface of the sliding sleeve via a rod. A feeding block is slidably connected to the sliding sleeve. A liquid tank is opened on the inner side wall of the groove. A reciprocating block is slidably connected to the liquid tank. Several return springs are fixedly connected between the reciprocating block and the inner side wall of the groove. A second pipe is fixedly connected through the base, the pressing table, and the sliding sleeve. The second pipe connects the sliding sleeve and the liquid tank. Both the liquid tank and the sliding sleeve are filled with hydraulic oil. An installation plate is fixedly connected to the inner wall of the groove. The third shaft and the threaded cylinder are both rotatably connected to the installation plate through bearings. A limit rod is fixedly connected to the lower surface of the top block, and the limit rod is slidably connected to the installation plate.

2. The bicycle bottom bracket press-fitting system according to claim 1, characterized in that, Both the reciprocating block and the slider have T-shaped cross sections.

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