CN-121972947-A - Automatic freezing press-fitting production line

CN121972947ACN 121972947 ACN121972947 ACN 121972947ACN-121972947-A

Abstract

The invention relates to the technical field of bearing assembly, in particular to an automatic freezing press-fitting production line, which comprises a press-fitting platform, wherein a combined press-fitting mechanism is arranged at the top of the press-fitting platform. According to the invention, the bearing seat hole is fed by the rotary feeding machine, then the bearing seat hole is transferred to the combined pressing mechanism for limiting through the feeding tool II, the sliding bearings are conveyed to the designated position through the liquid nitrogen conveying chain after being frozen and contracted, then the bearing seat hole is transferred to the first feeding tool, the pressing work is carried out through the combined pressing mechanism, then the pressed guide assembly is subjected to classified discharging through the discharging and distributing tool, the sliding bearings are subjected to liquid nitrogen freezing, the bearing is ensured to be reduced and then mounted, the outer surface of the sliding bearings is gradually restored to be in full contact with the bearing seat hole after the bearing is mounted, interference fit is realized, deformation and the like of the bearing when the bearing is mounted through pressure are effectively reduced, the rejection rate of the sliding bearings during mounting is reduced, and the efficiency and quality of the pressing work are improved.

Inventors

SHAN YAMING
ZHOU YINCHUN
TANG QIN
GUO FUYAN
ZHANG YING

Assignees

双飞无油轴承集团股份有限公司

Dates

Publication Date: 20260505
Application Date: 20260407

Claims (10)

1. The automatic freezing press-mounting production line is characterized in that a liquid nitrogen conveying chain is arranged on one side wall of the press-mounting platform, a rotary feeding machine is arranged on one side wall of the press-mounting platform, which is perpendicular to the liquid nitrogen conveying chain, a first positioning feeding tool and a second positioning feeding tool are respectively arranged at two edges of the top of the press-mounting platform, which are perpendicular to each other, the input ends of the first positioning feeding tool and the second positioning feeding tool are respectively connected with the liquid nitrogen conveying chain and the output end of the rotary feeding machine, a combined press-mounting mechanism is arranged at the top of the press-mounting platform, and a discharging and shunting tool is arranged at the output end of the combined press-mounting mechanism; The combined press-fitting mechanism comprises a mounting frame II and a driving seat, wherein a press-fitting air cylinder I and a press-fitting air cylinder II are arranged at the top of the mounting frame II, the output end of the press-fitting air cylinder I extends to the bottom of the mounting frame II and is in transmission connection with a pressure piece I, the output end of the press-fitting air cylinder II extends to the bottom of the mounting frame II and is in transmission connection with a pressure piece II, three groups of limiting clamping assemblies are in parallel transmission connection with the conveying end of the driving seat, and pressure sensors are arranged in the pressure piece I and the pressure piece II.
2. The automatic freezing and press-fitting production line is characterized by comprising a box body, wherein a flip cover is hinged to the top of the box body, two groups of telescopic supporting rods are symmetrically arranged on two side walls of the flip cover, sealing cotton is arranged on the top of the box body, two groups of conveying chains are arranged in the box body, each group of conveying chains consists of a plurality of groups of chain plates which are sequentially connected at the first position, a plurality of groups of leakage holes are uniformly distributed on the top of each group of chain plates, two groups of supporting plates are symmetrically arranged on two sides of each group of conveying chains, two groups of guide plates are symmetrically arranged on the top of each group of conveying chains, and two groups of protection boxes are symmetrically arranged at two ends of each four groups of supporting plates.
3. The automatic freezing press-fitting production line is characterized in that two groups of blocking curtains are symmetrically arranged below two ends of sealing cotton, three groups of sealing plates are arranged in parallel in the box body, two groups of pull rods are symmetrically arranged at two ends of the three groups of sealing plates, two groups of adjusting through grooves are symmetrically formed in two ends of each group of supporting plates, each group of pull rods movably penetrate through the corresponding four groups of adjusting through grooves, a plurality of groups of first air guide holes are uniformly arranged on each group of supporting plates at equal intervals, a plurality of groups of second air guide holes are uniformly arranged on each group of sealing plates at equal intervals, each group of second air guide holes are movably communicated with the corresponding first air guide holes, and air inlet pipes and air exhaust pipes are respectively arranged on two side walls of the box body.
4. The automatic freezing and press-fitting production line disclosed by claim 3 is characterized in that a freeze dryer and an exhaust fan are arranged in the box body, the input end of the freeze dryer is communicated with an air inlet pipe, the output end of the freeze dryer is communicated with a plurality of corresponding air guide holes II, a cold source of the freeze dryer is liquid nitrogen, the input end of the exhaust fan is communicated with a plurality of corresponding air guide holes II, the output end of the exhaust fan is communicated with an exhaust pipe, a liquid nitrogen inlet and outlet are formed in the side wall of the bottom of the box body, the positioning and feeding tool I comprises two groups of linear guide rails I and two groups of linear guide rails II which are arranged in a staggered mode, the output ends of the linear guide rails I and the linear guide rails II are respectively connected with a clamp assembly I and a clamp assembly II in a transmission mode, and two groups of internal support seats are arranged between the linear guide rails I and the linear guide rails II in parallel.
5. The automatic freezing and press-fitting production line disclosed by claim 4 is characterized in that the first clamp assembly comprises a heat-preserving barrel, an electric push rod is arranged at the top of the heat-preserving barrel, a first heat-insulating ring is arranged in the heat-preserving barrel, a vacuum heat-insulating cavity is arranged between the outer wall of the first heat-insulating ring and the inner wall of the heat-preserving barrel, a second heat-insulating ring is arranged at the bottoms of the first heat-insulating ring and the heat-preserving barrel, the output end of the electric push rod extends into the heat-preserving barrel and is in transmission connection with a mounting cover, and a rotating ring is arranged on the inner wall of the mounting cover.
6. The automatic freezing press-fitting production line is characterized in that a first installation frame is connected to the inner wall of the rotating ring in a transmission mode, a movable block is connected to the inner wall of the top of the first installation frame in a sliding mode, a driving screw is arranged in the first installation frame and is in threaded connection with the movable block, an air guide column is arranged at the bottom of the movable block, a plurality of groups of first telescopic grooves are distributed on the inner wall of the bottom of the air guide column in an annular array mode, the side view cross section of each group of first telescopic grooves is in a fan shape, a group of telescopic columns penetrate through each group of first telescopic grooves in a movable mode, and one end, far away from the air guide column, of each group of telescopic columns is provided with a group of heat insulation contact blocks.
7. The automatic freezing press-fitting production line is characterized by comprising a clamp holder, wherein two groups of clamping blocks are symmetrically connected to the output end of the clamp holder in a transmission mode, two groups of telescopic grooves are symmetrically formed in the tops of the two groups of clamping blocks, a first group of protection plates movably penetrate through the tops of the two groups of telescopic grooves, the overlooking section of each first group of protection plates is in a sector shape, two ends of each first group of protection plates movably penetrate through the corresponding second group of protection plates respectively, and a group of clamping grooves are formed in the bottoms of one ends, far away from the first protection plates, of each second group of protection plates.
8. The automatic freezing and press-fitting production line of claim 7 is characterized in that a plurality of groups of springs used for ejecting corresponding protection plates II are arranged in each group of protection plates I, a group of electromagnets are arranged on the inner wall of the bottom of each group of telescopic grooves II, each group of electromagnets are magnetically connected with the corresponding group of protection plates I, and a plurality of groups of gas springs I are arranged on the inner wall of the bottom of each group of telescopic grooves II.
9. The automatic freezing and press-fitting production line of claim 8, wherein the top of each group of first gas springs is connected to the bottom of a corresponding group of first protection plates, a group of clamping blocks are respectively and slidably connected to the inner walls of two sides of each group of second telescopic grooves, each group of clamping blocks movably penetrate through the corresponding group of clamping grooves, a group of second gas springs are arranged at the top of each group of clamping blocks, and the top of each group of second gas springs is connected to the bottom of the corresponding group of second protection plates.
10. The automatic freezing press-fitting production line is characterized by comprising a linear conveying belt, wherein a storage bin and a product diversion groove are formed in one side of the linear conveying belt, a first discharging cylinder is arranged on one side, far away from the storage bin, of the linear conveying belt, a first pushing plate is connected to the output end of the first discharging cylinder in a transmission mode, two second discharging cylinders are arranged on one side, far away from the product diversion groove, of the linear conveying belt in parallel, a second pushing plate is connected to the output end of each second discharging cylinder in a transmission mode, and each second pushing plate faces towards a corresponding opening of the product diversion groove.

Description

Automatic freezing press-fitting production line Technical Field The invention belongs to the technical field of bearing assembly, and particularly relates to an automatic freezing press-fitting production line. Background The standard for producing the guide assembly is to assemble the sliding bearing with the opening into the seat hole of the other bearing, so that the sliding bearing is not turned in the seat hole, and the outer surface of the sliding bearing is fully contacted with the seat hole, thereby being beneficial to bearing load and realizing accurate guide. According to the technical scheme, the automatic bearing production line comprises a ball loading mechanism, a cleaning mechanism and a lining ring pressing mechanism which are sequentially arranged, wherein the ball loading mechanism can complete the assembly of all steel balls through one-time operation, the whole assembly efficiency is improved, an outer ring, an upper inner ring and a lower inner ring of a bearing are separated during cleaning, then the upper inner ring, the lower inner ring and the outer ring of the bearing are respectively washed through a washing structure, the parts of the bearing can be thoroughly cleaned, the cleaning effect is ensured, when the lining ring is pressed in finally, the bearing and the lining ring are respectively and automatically fed, the pressing operation is completed at the lining ring pressing mechanism, the blanking is carried out from the blanking mechanism after the detection of the lining ring detection mechanism, the conveying mechanism realizes the conveying of the bearing between different mechanisms, and the assembly efficiency is improved. The device still has the following drawbacks: The existing bearing press-fitting device presses the sliding bearing into the bearing seat hole by pressure force, but the sliding bearing is easy to deform when receiving excessive pressure, and the rejection rate of press-fitting work is improved. Disclosure of Invention Aiming at the problems, the invention provides an automatic freezing press-fitting production line, which comprises a press-fitting platform, wherein a liquid nitrogen conveying chain is arranged on one side wall of the press-fitting platform, a rotary feeding machine is arranged on one side wall of the press-fitting platform, which is perpendicular to the liquid nitrogen conveying chain, a positioning feeding tool I and a positioning feeding tool II are respectively arranged at two side edges of the top of the press-fitting platform, which are perpendicular to each other, the input ends of the positioning feeding tool I and the positioning feeding tool II are respectively connected with the liquid nitrogen conveying chain and the output end of the rotary feeding machine, a combined press-fitting mechanism is arranged at the top of the press-fitting platform, and a discharging and shunting tool is arranged at the output end of the combined press-fitting mechanism; The combined press-fitting mechanism comprises a mounting frame II and a driving seat, wherein a press-fitting air cylinder I and a press-fitting air cylinder II are arranged at the top of the mounting frame II, the output end of the press-fitting air cylinder I extends to the bottom of the mounting frame II and is in transmission connection with a pressure piece I, the output end of the press-fitting air cylinder II extends to the bottom of the mounting frame II and is in transmission connection with a pressure piece II, three groups of limiting clamping assemblies are in parallel transmission connection with the conveying end of the driving seat, and pressure sensors are arranged in the pressure piece I and the pressure piece II. The liquid nitrogen conveying chain comprises a box body, wherein a flip cover is hinged to the top of the box body, two groups of telescopic supporting rods are symmetrically arranged on two side walls of the flip cover, sealing cotton is arranged on the top of the box body, two groups of conveying chains are arranged in the box body, each group of conveying chains consists of a plurality of groups of chain plates which are sequentially connected at the first position, a plurality of groups of leakage holes are uniformly distributed on the top of each group of chain plates, two groups of supporting plates are symmetrically arranged on two sides of each group of conveying chains, two groups of guide plates are symmetrically arranged on the top of each group of conveying chains, and two groups of protection boxes are symmetrically arranged on two ends of each four groups of supporting plates. Further, two groups of blocking curtains are symmetrically arranged below two ends of the sealing cotton, three groups of sealing plates are arranged in parallel in the box body, two groups of pull rods are symmetrically arranged at two ends of the three groups of sealing plates, two groups of adjusting through grooves are symmetrically formed at two ends of eac