Automatic processing device for coupler hollow core

Abstract

The invention discloses an automatic processing device for a hollow core of a coupler, which relates to the technical field of stamping and comprises a processing table and further comprises a plurality of middle shafts movably arranged at the top of the processing table, and a rolling roller I and a rolling roller II which are used for restraining the hollow core and rolling the inner wall of the hollow core sequentially and rotatably sleeve the surfaces of the middle shafts from top to bottom. Through preliminary die assembly of the first-stage sleeve die, the radian section and the first protruding section, supporting rolling of the first rolling roller and the second rolling roller and moving straightening of the second-stage sleeve die, the straightness of the non-boss part of the hollow core is improved, through two-time punching of the first-stage sleeve die and the second-stage sleeve die, the forming quality of the hollow core boss is high, and the forming quality of the hollow core boss is improved. And a rolling head, a first collision supporting plate and a second collision supporting plate are matched for supporting, rotating and flattening, the protruding heights of the surfaces of the protruding parts of the bosses are consistent, the first collision supporting plate and the second collision supporting plate beat the inner walls of the upper face and the lower face of the bosses to make contact with the plane end in a matched mode, and the upper face and the lower face of the bosses tend to be flat.

Description

Technical Field

[0001] The present invention relates to the field of stamping technology, and in particular to an automatic processing device for the hollow of a coupler. Background Art

[0002] The hollow of the coupler is a key structure for optimizing the transmission of electromagnetic waves or optical signals. Its core function is to reduce signal loss by reducing the interference of dielectric materials, while improving power capacity and thermal stability. Usually, bosses need to be machined on the surface of the hollow of the coupler. The bosses can be used as the installation reference for external optical elements (such as lenses, mirrors). By mechanical positioning, the optical axis alignment can be ensured, and the optical loss caused by assembly deviation can be reduced.

[0003] Chinese Patent CN111389988B discloses a metal round tube rolling and bulging device, which includes a base, a rolling and bulging mechanism, a driving and feeding mechanism, and a positioning and clamping mechanism. The rolling and bulging mechanism is installed on the driving and feeding mechanism, and then the driving and feeding mechanism and the positioning and clamping mechanism are installed on the base. Then the pipe is horizontally installed on the positioning and clamping mechanism.

[0004] The following problems exist in the above patent and the prior art: When machining the bosses on the current hollow, the heights of the boss protruding parts at various positions cannot be well in the same plane, and the flatness of the upper and lower surfaces of the bosses cannot tend to be unified. As a result, when the bosses assist in installing the hollow, the installed hollow will be deviated, which will affect the assembly of the coupler. Summary of the Invention

[0005] The purpose of this part is to outline some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part, as well as in the abstract and title of the specification of this application, to avoid obscuring the purpose of this part, the abstract of the specification, and the title of the invention. However, such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: An automatic processing device for the hollow of a coupler, including: a processing table, and further including: a plurality of central shafts are movably arranged on the top of the processing table. A first rolling roller and a second rolling roller for restraining the hollow and rolling the inner wall of the hollow are sequentially sleeved on the surface of the central shaft from top to bottom. An outer extension plate is fixedly connected to the middle of the central shaft. A rolling head is fixedly connected to the outside of the outer extension plate. A first impact support plate and a second impact support plate for patting the inner wall of the boss of the hollow are movably connected to the upper and lower surfaces of the rolling head. First sleeve molds or second sleeve molds are symmetrically arranged on the left and right sides of the upper and lower parts outside the central shaft.

[0007] As a preferred solution of the hollow automatic processing device of the coupler described in the present invention, wherein: the hollow is composed of a convex part, a connecting part symmetrically arranged on the upper and lower parts of the convex part, and a vertical part; A positioning circular block sleeving the vertical part is installed on the top of the processing table, bottom driving sources are symmetrically arranged at the bottom of the positioning circular block, and the output shafts of the bottom driving sources movably pass through the processing table and are fixedly connected with fixed blocks; An eccentric rod is fixedly connected to the outer side of the top of the fixed block, a moving block is movably arranged on the surface of the eccentric rod, the output shaft of a displacement driving source is fixedly connected to the top of the moving block, the top of the displacement driving source is fixedly connected to a top mounting plate, and the displacement driving source is fixedly connected to the processing table through the top mounting plate.

[0008] As a preferred solution of the hollow automatic processing device of the coupler described in the present invention, wherein: a closing driving source is fixedly connected to the side of the moving block and the fixed block opposite to the first-stage sleeve mold, and a clamping block is fixedly connected to the output shaft of the closing driving source; A clamping cavity one or a clamping cavity two is movably clamped and connected to the front end of the clamping block.

[0009] As a preferred solution of the hollow automatic processing device of the coupler described in the present invention, wherein: a connecting block one is fixedly connected to the side of the clamping cavity one, a first-stage sleeve mold is fixedly connected to the side of the connecting block one, a radian section is fixedly connected to the bottom of the first-stage sleeve mold, and the first-stage sleeve mold is fixedly connected to a convex section one through the radian section; A connecting block two is fixedly connected to the side of the clamping cavity two, a second-stage sleeve mold is fixedly connected to the side of the connecting block two, a flat end is fixedly connected to the bottom of the second-stage sleeve mold, and the second-stage sleeve mold is fixedly connected to a convex section two through the flat end.

[0010] As a preferred solution of the hollow automatic processing device of the coupler described in the present invention, wherein: a convex section one or a convex section two is closedly arranged on the upper and lower sides of the convex part; The height of the second-stage sleeve mold is lower than the height of the first-stage sleeve mold.

[0011] As a preferred solution of the hollow automatic processing device of the coupler described in the present invention, wherein: a vertical frame is fixedly connected to the top of the processing table, a downward moving driving source is installed on the top of the vertical frame, a fixed frame is fixedly connected to the bottom of the output shaft of the downward moving driving source, a rotation driving source is fixedly connected to the middle of the fixed frame, and the output shaft of the rotation driving source movably passes through the fixed frame and is fixedly connected with an up-and-down driving source; An insertion and sliding part is fixedly connected to the bottom of the fixed frame, the insertion and sliding part is movably arranged inside an inner ring groove, the inner ring groove is opened on the surface of a bottom disc, and the bottom disc is movably arranged at the bottom of the fixed frame.

[0012] As a preferred embodiment of the hollow-core automatic processing device of the coupler according to the present invention, wherein: extension frames are symmetrically arranged on the surface of the bottom disc, a telescopic rotation source and a counterweight are respectively installed on the surfaces of the symmetric extension frames, the output shaft of the telescopic rotation source is fixedly connected to a driving member, the driving member is transmitted through a transmission member and a driven member sleeved on its surface, and the driven member is fixedly connected to the surface of the rotating disc; A number of arc grooves are annularly distributed on the surface of the rotating disc, a moving groove is correspondingly arranged at the bottom of the arc groove, the moving groove is opened on the surface of the bottom disc, clamping pieces are respectively and movably clamped on the upper and lower surfaces of the arc groove and the moving groove, and a central shaft is fixedly connected to the middle of the clamping piece.

[0013] As a preferred embodiment of the hollow-core automatic processing device of the coupler according to the present invention, wherein: a support member is movably arranged on the top of the bottom disc, the support member is fixedly connected to the surface of the rotating disc, and the output shaft of the vertical pushing source movably passes through the rotating disc and the bottom disc and is fixedly connected to a linkage disc; A number of groups of auxiliary rods are annularly arranged on the outer side of the linkage disc, and two auxiliary rods are in a group. A back plate is movably sleeved on the surface of a group of auxiliary rods, a movable sleeve plate is fixedly connected to the top of the back plate, the movable sleeve plate is movably arranged on the surface of the central shaft, and the movable sleeve plate is movably arranged between the clamping piece and the first rolling roller.

[0014] As a preferred embodiment of the hollow-core automatic processing device of the coupler according to the present invention, wherein: a first impact support plate is fixedly connected to the bottom of the back plate, the first impact support plate is movably sleeved on the surface of the central shaft, and a driving strip and a limiting rod are fixedly connected to the bottom of the first impact support plate; A second impact support plate is movably arranged on the surface of the limiting rod, and a driven strip is fixedly connected to the top of the second impact support plate.

[0015] As a preferred embodiment of the hollow-core automatic processing device of the coupler according to the present invention, wherein: an extension plate is arranged between the first impact support plate and the second impact support plate, a convex plate is fixedly connected to the side of the extension plate opposite to the rolling head, a transmission wheel is rotatably arranged on the surface of the convex plate, and the driving strip is meshed with the driven strip through the transmission wheel.

[0016] The beneficial effects of the present invention: The arc connecting part of the hollow boss is formed by the preliminary die closing and stamping of the first-level sleeve die, the arc section and the first convex section. Then, through the supporting rolling of the first rolling roller and the second rolling roller and the moving straightening of the second-level sleeve die, the flatness of the non-boss part of the hollow is improved. Moreover, the two-time stamping of the first-level sleeve die and the second-level sleeve die results in high-quality forming of the hollow boss, avoiding metal springback in the later stage of one-time forming. Together with the combined support rotation and flattening of the rolling head, the first impact support plate and the second impact support plate, the heights of the surface protrusions of the convex part of the boss are made consistent. And with the cooperation of the intermittent movement, the first impact support plate and the second impact support plate pat the inner walls of the upper and lower surfaces of the boss to contact the flat ends, making the upper and lower surfaces of the boss tend to be flat. Furthermore, through the treatment of the hollow boss part and the non-boss part, the forming quality of the hollow is improved, and thus the installation accuracy of the hollow is enhanced.

[0017] Start the rotary drive source, which drives the up-and-down push source and the linkage disk to rotate. During the rotation of the linkage disk, it will rotate synchronously through the external back plate and the central axis. During the rotation of the central axis, the bottom disk and the rotating disk will be driven to rotate synchronously through the clip. The bottom disk rotates relative to the fixed frame through the cooperation of the inner ring groove and the insertion slider. Thus, during the rotation of the central axis, it will drive the first rolling roller and the second rolling roller to rotate and roll inside the hollow wall. In cooperation with the second-level sleeve die that restricts the outside of the hollow, the coaxiality of each position up and down of the vertical part of the hollow is improved. And under the repeated rolling of the first rolling roller and the second rolling roller, the stress concentration of the second-level sleeve die for the moving straightening of the hollow is reduced, and the subsequent springback of the hollow is decreased.

[0018] When the central axis rotates inside the hollow, the rolling head in the middle and the first impact support plate and the second impact support plate that are coplanar with the rolling head up and down will rotate and move to flatten the inside of the hollow boss, so that the protruding heights of the hollow boss are in the same plane. And by rotating and rolling the connecting part and the protruding part of the hollow, the flatness of the upper and lower surfaces of the hollow boss is improved.

[0019] During the rotation of the extension plate, the impact support plate 1, and the impact support plate 2, the up-and-down pushing source is intermittently activated, causing the up-and-down pushing source to drive the linkage disc and the auxiliary rod to move upward through the moving rod. Thus, during the upward movement of the auxiliary rod, it will drive the back plate and the movable sleeve plate to move upward along the central axis. Therefore, during the upward movement of the back plate, the impact support plate 1 at its bottom will contact the inner wall of the hollow boss, causing the impact support plate 1 to slap the inner wall of the hollow, making it contact the flat end portion on the side of the upper secondary sleeve mold. During the upward movement of the impact support plate 1, it will drive the transmission wheel to rotate through the active strip. Thus, through the transmission of the transmission wheel, the driven strip will move downward and approach the inner wall of the hollow boss, causing the impact support plate 2 at the bottom of the driven strip to slap the inner wall of the hollow, making it contact the flat end portion on the side of the lower secondary sleeve mold. Furthermore, the impact support plate 1 and the impact support plate 2 will move outward synchronously, causing the impact support plate 1 and the impact support plate 2 to symmetrically slap the upper and lower sides of the inner wall of the hollow boss. Furthermore, through the slapping of the impact support plate 1 and the impact support plate 2, the stress concentration caused by the extrusion of the flat end on the arc portion of the boss is reduced, and the flatness of the contact surface between the hollow and the flat end can be improved through the symmetrical slapping of the impact support plate 1 and the impact support plate 2. Furthermore, through the combination of the impact support plate 1 and the impact support plate 2 and the rolling head, the inside of the boss is supported and rotated to be flattened, and the impact support plate 1 and the impact support plate 2 are intermittently and symmetrically slapped on the upper and lower inner walls of the boss, thereby improving the flatness of the upper and lower surfaces of the hollow boss and making the heights of all positions of the protruding portion of the boss consistent. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Among them: Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is Figure 1 an enlarged schematic diagram of part A; Figure 3 is a schematic diagram of the back of the overall structure of the present invention; Figure 4 is Figure 3 an enlarged schematic diagram of part B; Figure 5 is Figure 4 an enlarged schematic diagram of part C; Figure 6 is Figure 4 an enlarged schematic diagram of part D; Figure 7 is a schematic diagram of the connection of the separated comparison structure of the rotating disc and the bottom disc of the present invention; Figure 8 is Figure 7 an enlarged schematic diagram of part E; Figure 9 is a schematic diagram of the internal connection of the first-stage sleeve mold for closing and stamping the hollow of the present invention; Figure 10 is Figure 9 The enlarged structural schematic diagram of part F in Figure 11 is Figure 9 The enlarged structural schematic diagram of part G in Figure 12 The structural connection schematic diagram of the first rolling roller and the second rolling roller of the present invention; Figure 13 is Figure 12 The enlarged structural schematic diagram of part H in Figure 14 is Figure 12 The enlarged structural schematic diagram of part I in Figure 15 The schematic diagram of the combination process of the first-level sleeve die of the present invention; Figure 16 The schematic diagram of the combination process of the second-level sleeve die of the present invention; Figure 17 The internal structure comparison schematic diagram of the first-level sleeve die and the second-level sleeve die of the present invention; Figure 18 The structural connection schematic diagram of the insertion and sliding part and the inner ring groove of the present invention.

[0021] In the figure: 1. Processing and placement unit; 101. Processing table; 1011. Positioning round block; 1012. Bottom pushing source; 1013. Top mounting plate; 102. Vertical frame; 103. Downward pushing source; 1031. Fixed frame; 10311. Bottom disc; 103111. Insertion and sliding part; 10312. Extension frame; 10313. Expansion and contraction rotation source; 10314. Counterweight block; 10315. Driven part; 10316. Transmission part; 10317. Driving part; 10318. Moving groove; 10319. Inner ring groove; 1032. Rotation driving source; 1033. Up and down pushing source; 10331. Moving rod; 10332. Linking disc; 10333. Auxiliary rod; 104. Fixed block; 1041. Displacement pushing source; 1042. Moving block; 1043. Eccentric rod; 1044. Closing pushing source; 1045. Clamping block; 2. Forming unit; 201. Rotating disk; 2011. Radian groove; 2012. Support; 202. Primary sleeve die; 2021. First connecting block; 20211. First clamping cavity; 2022. Radian section; 2023. First protruding section; 203. Central axis; 2031. Clamping piece; 2032. First rolling roller; 2033. Back plate; 20331. Movable sleeve plate; 2034. First impact support plate; 20341. Active strip; 20342. Restricting rod; 20343. First through hole; 2035. Second impact support plate; 20351. Second through hole; 20352. Driven strip; 2036. Second rolling roller; 204. Extension plate; 2041. Rolling head; 2042. Protruding plate; 2043. Transmission wheel; 205. Secondary sleeve die; 2051. Second connecting block; 2052. Second clamping cavity; 2053. Flat end; 2054. Second protruding section; 3. Vertical part; 301. Connecting part; 302. Protruding part. Detailed implementation mode

[0022] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] Embodiment 1: As shown in Figures 1 - 18 An automatic hollow processing device for a coupler includes a processing table 101, and further includes: a plurality of central axes 203 are movably arranged on the top of the processing table 101. A first rolling roller 2032 and a second rolling roller 2036 for restricting the hollow and rolling the inner wall of the hollow are sequentially sleeved on the surface of the central axis 203 from top to bottom. An extension plate 204 is fixedly connected to the middle of the central axis 203. A rolling head 2041 is fixedly connected to the outside of the extension plate 204. A first impact support plate 2034 and a second impact support plate 2035 for patting the inner wall of the hollow boss are movably connected to the upper and lower surfaces of the rolling head 2041. First sleeve dies 202 or second sleeve dies 205 are symmetrically arranged on the left and right sides of the upper and lower parts outside the central axis 203 respectively.

[0024] As shown in Figure 11 the hollow is composed of a protruding part 302 and connecting parts 301 and a vertical part 3 symmetrically arranged on the upper and lower parts of the protruding part 302; As shown in Figures 1 - 4As shown, a positioning circular block 1011 sleeving the vertical portion 3 is installed on the top of the processing table 101. Symmetrically arranged at the bottom of the positioning circular block 1011 are bottom driving sources 1012. The output shafts of the bottom driving sources 1012 movably pass through the processing table 101 and are fixedly connected to a fixed block 104; On the outer side of the top of the fixed block 104 is fixedly connected an eccentric rod 1043. A moving block 1042 is movably arranged on the surface of the eccentric rod 1043. The top of the moving block 1042 is fixedly connected to the output shaft of a displacement driving source 1041. The top of the displacement driving source 1041 is fixedly connected to a top mounting plate 1013. The displacement driving source 1041 is fixedly connected to the processing table 101 through the top mounting plate 1013. The bottom driving sources 1012, the top mounting plate 1013, the downward moving driving source 103, the up and down driving source 1033, the displacement driving source 1041, and the closing driving source 1044 are preferably cylinders, which are powered by an external energy source and controlled by a unified PLC, and the piston position is detected by a magnetic switch and the air pressure is detected by a pressure sensor.

[0025] As Figures 4 - 5 and Figure 16 shown, on one side of the moving block 1042 and the fixed block 104 relative to the first-stage sleeve die 202 is fixedly connected a closing driving source 1044. The output shaft of the closing driving source 1044 is fixedly connected to a clamping block 1045; The front end of the clamping block 1045 is movably clamped and connected to a first clamping cavity 20211 or a second clamping cavity 2052.

[0026] As Figures 4 - 5 and Figures 15 - 17 shown, on the side of the first clamping cavity 20211 is fixedly connected a first connecting block 2021. On the side of the first connecting block 2021 is fixedly connected a first-stage sleeve die 202. The bottom of the first-stage sleeve die 202 is fixedly connected to a curved section 2022. The first-stage sleeve die 202 is fixedly connected to a first raised section 2023 through the curved section 2022; On the side of the second clamping cavity 2052 is fixedly connected a second connecting block 2051. On the side of the second connecting block 2051 is fixedly connected a second-stage sleeve die 205. The bottom of the second-stage sleeve die 205 is fixedly connected to a flat end 2053. The second-stage sleeve die 205 is fixedly connected to a second raised section 2054 through the flat end 2053. It should be noted that the up and down in this paragraph is only described for the reference numerals.

[0027] As Figures 11 - 17 shown, a first raised section 2023 or a second raised section 2054 is closedly arranged on the upper and lower sides of the raised portion 302; The height of the second-stage sleeve die 205 is lower than that of the first-stage sleeve die 202.

[0028] As Figures 1 - 2 and Figure 18 shown, a vertical frame 102 is fixedly connected to the top of the processing table 101. A downward movement driving source 103 is installed at the top of the vertical frame 102. The bottom of the output shaft of the downward movement driving source 103 is fixedly connected to a fixing frame 1031. A rotation driving source 1032 is fixedly connected to the middle of the fixing frame 1031. The output shaft of the rotation driving source 1032 movably passes through the fixing frame 1031 and is fixedly connected to an up and down pushing source 1033; A plugging and sliding member 103111 is fixedly connected to the bottom of the fixing frame 1031. The plugging and sliding member 103111 is movably arranged inside an inner ring groove 10319. The inner ring groove 10319 is opened on the surface of a bottom disc 10311. The bottom disc 10311 is movably arranged at the bottom of the fixing frame 1031.

[0029] As Figure 2 and Figures 6 - 8 shown, extension frames 10312 are symmetrically arranged on the surface of the bottom disc 10311. A telescopic rotation source 10313 and a counterweight 10314 are respectively installed on the surfaces of the symmetric extension frames 10312. The telescopic rotation source 10313 and the counterweight 10314 have the same weight. The output shaft of the telescopic rotation source 10313 is fixedly connected to a driving member 10317. The driving member 10317 is transmitted with a driven member 10315 through a transmission member 10316 sleeved on its surface. The driven member 10315 and the driving member 10317 are preferably sprockets. The transmission member 10316 is preferably a chain. The driven member 10315 is fixedly connected to the surface of a rotating disc 201; A plurality of arc grooves 2011 are annularly distributed on the surface of the rotating disc 201. A moving groove 10318 is correspondingly arranged at the bottom of the arc groove 2011. The moving groove 10318 is opened on the surface of the bottom disc 10311. Clamping pieces 2031 are movably clamped on the upper and lower surfaces of the arc groove 2011 and the moving groove 10318. A middle shaft 203 is fixedly connected to the middle of the clamping piece 2031; The rotation driving source 1032 and the telescopic rotation source 10313 are preferably servo motors, which are powered by an external energy source and are controlled by a unified PLC in total, and the rotation angle and speed of the motors are detected through an encoder.

[0030] Operation process: The first-stage sleeve mold 202, the closing driving source 1044, and the second-stage sleeve mold 205 corresponding to the upper part of the eccentric rod 1043 in the following text are referred to as the upper first-stage sleeve mold 202, the upper closing driving source 1044, or the upper second-stage sleeve mold 205. The first-stage sleeve mold 202, the closing driving source 1044, and the second-stage sleeve mold 205 corresponding to the lower part of the eccentric rod 1043 are referred to as the lower first-stage sleeve mold 202, the lower closing driving source 1044, or the lower second-stage sleeve mold 205. And the upper and lower closing connection part 301 and the protruding part 302 form a boss; Manually sleeved the bottom of the hollow to be processed onto the outside of the positioning round block 1011, so that the output shaft of the lower closing driving source 1044 is inserted into the first clamping cavity 20211 through the clamping block 1045, and the closing driving source 1044 is used to push the first connecting block 2021, so that the two first-stage sleeve molds 202 inside the first connecting block 2021 are closed. Refer to Figure 15 Step a in. Thus, the bottom of the hollow is clamped and closed by the two lower first-stage sleeve molds 202. At this time, the two upper first-stage sleeve molds 202 are also pushed and closed by the upper closing driving source 1044, so that the top of the hollow is restricted inside the upper closed first-stage sleeve mold 202. At this time, the inner diameter of the upper first-stage sleeve mold 202 after closing is slightly larger than the diameter of the hollow, so that the upper first-stage sleeve mold 202 can slide down along the hollow, and the height of the hollow is greater than the total height of the rolling rollers 2032 on the upper and lower first-stage sleeve molds 202 after closing and docking. Then, the downward movement driving source 103 and the displacement driving source 1041 are started synchronously, so that the rolling rollers 2032, the rolling rollers 2036, and the rolling head 2041 that are shrunk and gathered inside the arc groove 2011 enter the hollow. At this time, there is a gap between the rolling head 2041 and the inner wall of the hollow. Then, the downward movement driving source 103 is used to push the fixing frame 1031 and the bottom disc 10311 downward, so that the bottom disc 10311 closes and covers the top opening of the upper closed first-stage sleeve mold 202, so that the hollow and the top of the upper first-stage sleeve mold 202 are covered by the bottom disc 10311. Refer to Figure 2 ; Then, the downward movement driving source 103 drives the bottom disc 10311 and the hollow core to move synchronously with the displacement driving source 1041 that drives the closed first-stage sleeve die 202, causing the upper and lower first-stage sleeve dies 202 to gradually close, that is, the convex section one 2023 on the opposite surfaces of the upper and lower first-stage sleeve dies 202 closes relatively. As a result, the hollow core bulges outwards under the action of the punching force. Gradually, the top of the hollow core is constrained by the bottom disc 10311 and the first-stage sleeve die 202 and driven to move downward, causing the middle part of the hollow core to move towards the space between the upper and lower first-stage sleeve dies 202, that is, towards the arc section 2022. Consequently, the middle part of the hollow core is gradually stamped and bent to expand the tube outwards. Furthermore, when the upper and lower convex sections one 2023 are closed, under the action of the extrusion force of the downward movement driving source 103, the extruded and outwardly expanded tube-shaped hollow core is formed in the cavity constituted by the closed upper and lower arc sections 2022 and the convex section one 2023. Thus, the middle part of the hollow core is initially stamped and expanded to form a convex platform with a surface arc, refer to Figure 4 ; Then move the downward pushing source 103 upward and pull the closing pushing source 1044 outward, so as to release the constraint on the outside of the preliminarily formed hollow core, and make the moving block 1042 rise a preset height along the eccentric rod 1043, which is convenient for the closing pushing source 1044 to pull the first-stage sleeve die 202 back to its original position, and make the preliminarily formed hollow core still sleeved on the top of the positioning round block 1011. Then move the downward pushing source 103 downward, so that the first rolling roller 2032, the second rolling roller 2036 and the rolling head 2041 at the bottom of the downward pushing source 103 continue to move downward into the inside of the hollow core. Finally, make the rolling head 2041 located in the middle of the boss. Then start the expansion and contraction rotation source 10313, make the expansion and contraction rotation source 10313 rotate through the driving part 10317 installed on its bottom output shaft, make the driving part 10317 drive the rotation of the driven part 10315 through the transmission part 10316 and the driven part 10315 rotates, make the driven part 10315 drive the rotating disk 201 to rotate. Thus, when the rotating disk 201 rotates, the arc groove 2011 on the surface of the rotating disk 201 drives the clamping piece 2031 and the middle shaft 203 to move outward along its arc inside it. Furthermore, the clamping piece 2031 and the middle shaft 203 at the bottom of the arc groove 2011 located on the surface of the moving groove 10318 move outward along the moving groove 10318. During the movement of the clamping piece 2031 and the middle shaft 203, the back plate 2033 at the bottom thereof will also move outward along the auxiliary rod 10333, where the auxiliary rod 10333 is parallel to the moving groove 10318 at its top. Thus, the clamping piece 2031 and the middle shaft 203 move outward, making the surfaces of the first rolling roller 2032 and the second rolling roller 2036 fit with the inner wall of the hollow core. At this time, the rolling head 2041 is inserted into the inside of the boss of the hollow core, and the first impact support plate 2034 and the second impact support plate 2035 above and below the rolling head 2041 are respectively flush with the upper and lower surfaces of the rolling head 2041. Thus, the first rolling roller 2032 and the second rolling roller 2036 perform internal contact constraint on the hollow core. Furthermore, through the first rolling roller 2032 and the second rolling roller 2036, the internal support contact constraint on the hollow core and the sleeving restriction on the inside of the hollow core by the positioning round block 1011 are carried out, so as to reduce the eccentric movement of the hollow core under subsequent stamping; Then, replace the first-level sleeve mold 202 with the second-level sleeve mold 205, and insert the second-level sleeve mold 205 into the interior of the clamping block 1045 through the second clamping cavity 2052 on the outside of the second connecting block 2051, so that the lower closing driving source 1044 pushes the lower second-level sleeve mold 205 to close on the hollow surface. At this time, the upper closing driving source 1044 pushes the clamping block 1045 and the second connecting block 2051 to move, so that the second-level sleeve mold 205 inside the second connecting block 2051 closes above the hollow, and further, the second-level sleeve mold 205 is movably closed on both the upper and lower sides of the hollow, that is, the inner diameter of the second-level sleeve mold 205 after closing is slightly larger than the diameter of the hollow. Because the height of the second-level sleeve mold 205 is lower than that of the first-level sleeve mold 202, and then by adjusting the positions of the displacement driving source 1041 and the bottom driving source 1012 output shafts, the upper and lower positions of the second-level sleeve mold 205 corresponding to the hollow boss are adjusted, so that the flat end 2053 and the second convex section 2054 of the second-level sleeve mold 205 do not contact the boss initially formed on the hollow surface and the bottom disc 10311; Then, start the displacement driving source 1041 and the bottom driving source 1012 synchronously, so that the upper and lower closed second-level sleeve molds 205 move towards the boss part of the hollow in opposite directions. Then, under the internal support and restriction of the first rolling roller 2032 and the second rolling roller 2036 during the movement of the second-level sleeve mold 205, the surface of the hollow is straightened by the movement of the second-level sleeve mold 205, thereby improving the subsequent installation accuracy of the hollow; During the opposite movement of the upper and lower closed second-level sleeve molds 205, the flat ends 2053 and the second convex sections 2054 on the opposite surfaces of the upper and lower closed second-level sleeve molds 205 make closed contact with the connecting part 301 of the convex arc on the boss surface. Thus, when the second convex section 2054 is closed, the flat end 2053 pushes the connecting part 301 of the arc originally formed along the arc section 2022 on the hollow surface to be squeezed flat. The connecting part 301 of this arc is formed between the vertical part 3 and the convex part 302 of the hollow, so that the flat end 2053 squeezes the connecting part 301 of the hollow convex arc to contact the first impact support plate 2034 and the second impact support plate 2035. Then, under the support of the first impact support plate 2034 and the second impact support plate 2035, the boss is not easily overly collapsed during the extrusion into the convex part, ensuring the flatness of the upper and lower surfaces of the hollow boss.

[0031] Embodiment 2: The difference between this embodiment and the first embodiment is: As Figures 7 - 10 and Figure 13 shown, a support member 2012 is movably arranged on the top of the bottom disc 10311. The support member 2012 is preferably a universal ball. The support member 2012 is fixedly connected to the surface of the rotating disc 201. The output shaft of the up and down driving source 1033 movably passes through the rotating disc 201 and the bottom disc 10311 and is fixedly connected to the linkage disc 10332; On the outer side of the linkage disk 10332, a number of groups of auxiliary rods 10333 are provided in a ring, and two auxiliary rods 10333 form a group. A back plate 2033 is movably sleeved on the surface of a group of the auxiliary rods 10333. A movable sleeve plate 20331 is fixedly connected to the top of the back plate 2033. The movable sleeve plate 20331 is movably arranged on the surface of the central shaft 203. The movable sleeve plate 20331 is movably arranged between the clamping piece 2031 and the first rolling roller 2032.

[0032] As Figure 14 shown, a first impact support plate 2034 is fixedly connected to the bottom of the back plate 2033. The first impact support plate 2034 is movably sleeved on the surface of the central shaft 203. A driving strip 20341 and a limiting rod 20342 are fixedly connected to the bottom of the first impact support plate 2034; And a round block is fixedly connected to the bottom of the limiting rod 20342 for restricting the second impact support plate 2035 from disengaging from the limiting rod 20342. Of course, in order to enable the second impact support plate 2035 to be supported, a spring can be sleeved on the surface of the central shaft 203 so that the second rolling roller 2036 supports the second impact support plate 2035 through the spring. Correspondingly, the same specification of spring should also be sleeved on the central shaft 203 at the top of the first impact support plate 2034 so that the first rolling roller 2032 is movably connected to the first impact support plate 2034 through the spring. And the distance between the first rolling roller 2032 and the first impact support plate 2034 is the same as the distance between the second rolling roller 2036 and the second impact support plate 2035. Further, under the influence of the spring support, the first impact support plate 2034 and the second impact support plate 2035 move up and down by the same distance. The second impact support plate 2035 is movably arranged on the surface of the limiting rod 20342. A driven strip 20352 is fixedly connected to the top of the second impact support plate 2035.

[0033] As Figure 14 shown, an extension plate 204 is arranged between the first impact support plate 2034 and the second impact support plate 2035. A convex plate 2042 is fixedly connected to the side of the extension plate 204 opposite to the rolling head 2041. A transmission wheel 2043 is rotatably arranged on the surface of the convex plate 2042. The driving strip 20341 is meshed and connected to the driven strip 20352 through the transmission wheel 2043. The transmission wheel 2043 is preferably a transmission gear. The driving strip 20341 and the driven strip 20352 are preferably racks; A second through hole 20351 is arranged on the surface of the second impact support plate 2035 corresponding to the driving strip 20341. A first through hole 20343 is arranged on the surface of the first impact support plate 2034 corresponding to the driven strip 20352. The rolling head 2041 is preferably a semi-circular block or a roller with chamfers on both sides.

[0034] All the other structures are the same as those in the first embodiment.

[0035] Operation process: Start the rotary drive source 1032, and let the rotary drive source 1032 drive the up-and-down pushing source 1033 and the linkage disk 10332 to rotate. During the rotation of the linkage disk 10332, it will rotate synchronously through the external backplane 2033 and the central axis 203. During the rotation of the central axis 203, it will drive the bottom disk 10311 and the rotating disk 201 to rotate synchronously through the clip 2031. The bottom disk 10311 rotates relative to the fixed frame 1031 through the cooperation of the inner ring groove 10319 and the insertion and sliding member 103111. Thus, during the rotation of the central axis 203, it will drive the first rolling roller 2032 and the second rolling roller 2036 to rotate and roll on the inner wall of the hollow core, cooperating with the secondary sleeve die 205 constrained outside the hollow core, thereby improving the coaxiality of each position above and below the vertical part 3 of the hollow core. Under the repeated rolling of the first rolling roller 2032 and the second rolling roller 2036, the stress concentration of the secondary sleeve die 205 on the straightening of the hollow core movement is reduced, and the subsequent springback of the hollow core is reduced; When the central axis 203 rotates inside the hollow core, the rolling head 2041 in the middle thereof, the first collision support plate 2034 and the second collision support plate 2035 that are coplanar with the rolling head 2041 up and down will rotate and move to flatten the inside of the boss of the hollow core, so that the protruding heights of the bosses of the hollow core are in the same plane, and the connecting part 301 and the protruding part 302 of the hollow core are rotationally rolled, improving the flatness of the upper and lower surfaces of the hollow core boss; During the rotation of the extension plate 204, the first impact support plate 2034, and the second impact support plate 2035, the up-and-down pushing source 1033 is intermittently activated. The up-and-down pushing source 1033 drives the linkage disk 10332 and the auxiliary rod 10333 to move upward through the moving rod 10331. Thus, when the auxiliary rod 10333 moves upward, it drives the back plate 2033 and the movable sleeve plate 20331 to move upward along the central axis 203. When the back plate 2033 moves upward, the first impact support plate 2034 at its bottom contacts the inner wall of the hollow boss, causing the first impact support plate 2034 to slap the inner wall of the hollow, so that it partially contacts the flat end 2053 on the side of the upper secondary sleeve mold 205. When the first impact support plate 2034 moves upward, it drives the transmission wheel 2043 to rotate through the active strip 20341. Through the transmission of the transmission wheel 2043, the driven strip 20352 moves downward and approaches the inner wall of the hollow boss, causing the second impact support plate 2035 at the bottom of the driven strip 20352 to slap the inner wall of the hollow, so that it partially contacts the flat end 2053 on the side of the lower secondary sleeve mold 205. Then, the first impact support plate 2034 and the second impact support plate 2035 move outward synchronously, causing the first impact support plate 2034 and the second impact support plate 2035 to symmetrically slap the upper and lower sides of the inner wall of the hollow boss. Furthermore, through the slapping of the first impact support plate 2034 and the second impact support plate 2035, the stress concentration caused by the extrusion of the flat end 2053 on the arc part of the boss is reduced, and the flatness of the contact surface between the hollow and the flat end 2053 can be improved by the symmetrical slapping of the first impact support plate 2034 and the second impact support plate 2035. Furthermore, through the combination of the first impact support plate 2034, the second impact support plate 2035, and the rolling head 2041, the inside of the boss is supported and rotated to be flattened, and the first impact support plate 2034 and the second impact support plate 2035 are intermittently and symmetrically slapped on the upper and lower inner walls of the boss, so as to improve the flatness of the upper and lower surfaces of the hollow boss, and keep the heights of all positions of the convex part 302 of the boss consistent; After the secondary sleeve mold 205 finishes processing the hollow, the rolling head 2041 retracts and then lifts, causing the secondary sleeve mold 205 to close and open, so that the hollow can be easily taken from the top of the positioning round block 1011; In summary: The arc connecting part 301 of the hollow boss is formed by the preliminary mold closing and stamping of the first-stage sleeve mold 202, the arc section 2022 and the first convex section 2023. Then, through the support and rolling of the first rolling roller 2032 and the second rolling roller 2036 and the movement and straightening of the second-stage sleeve mold 205, the flatness of the non-boss part of the hollow is improved. Moreover, the two-time stamping of the first-stage sleeve mold 202 and the second-stage sleeve mold 205 results in a high forming quality of the hollow boss, avoiding the metal springback in the later stage of one-time forming. Then, in combination with the combined support, rotation and leveling of the rolling head 2041, the first impact support plate 2034 and the second impact support plate 2035, the heights of the surface protrusions of the boss protrusion part 302 are made consistent. And with the cooperation of the intermittent operation, the first impact support plate 2034 and the second impact support plate 2035 pat the inner walls of the upper and lower surfaces of the boss to contact the flat end 2053, making the upper and lower surfaces of the boss tend to be flat. Furthermore, through the treatment of the hollow boss part and the non-boss part, the forming quality of the hollow is improved, and thus the installation accuracy of the hollow is improved.

Claims

1. An automatic processing device for the hollow core of a coupler, comprising: The processing table (101) is characterized by further comprising: a plurality of central shafts (203) are movably arranged on the top of the processing table (101), and a first rolling roller (2032) for restricting the hollow core and rolling the inner wall of the hollow core and a second rolling roller (2036) are sequentially sleeved on the surface of the central shaft (203) from top to bottom; An extension plate (204) is fixedly connected to the middle of the central shaft (203), a rolling head (2041) is fixedly connected to the outside of the extension plate (204), a first impact support plate (2034) and a second impact support plate (2035) for patting the inner wall of the hollow core boss are movably connected to the upper and lower surfaces of the rolling head (2041), and a first sleeve mold (202) or a second sleeve mold (205) is symmetrically arranged on the left and right sides of the upper and lower parts of the outside of the central shaft (203).

2. The coupler hollow core automatic processing device according to claim 1, characterized in that: The hollow core is composed of a convex part (302), a connecting part (301) symmetrically arranged on the upper and lower parts of the convex part (302), and a vertical part (3); A positioning circular block (1011) sleeving the vertical part (3) is installed on the top of the processing table (101), bottom driving sources (1012) are symmetrically arranged at the bottom of the positioning circular block (1011), and the output shafts of the bottom driving sources (1012) movably pass through the processing table (101) and are fixedly connected to a fixed block (104); An eccentric rod (1043) is fixedly connected to the outside of the top of the fixed block (104), a moving block (1042) is movably arranged on the surface of the eccentric rod (1043), the output shaft of a displacement driving source (1041) is fixedly connected to the top of the moving block (1042), the top of the displacement driving source (1041) is fixedly connected to a top mounting plate (1013), and the displacement driving source (1041) is fixedly connected to the processing table (101) through the top mounting plate (1013).

3. The coupler hollow core automatic processing device according to claim 2, characterized in that: A closing driving source (1044) is fixedly connected to one side of the moving block (1042) and the fixed block (104) opposite to the first sleeve mold (202), and the output shaft of the closing driving source (1044) is fixedly connected to a clamping block (1045); The front end of the clamping block (1045) is movably clamped and connected to a first clamping cavity (20211) or a second clamping cavity (2052).

4. The coupler hollow core automatic processing device according to claim 3, characterized in that: A first connecting block (2021) is fixedly connected to the side of the first clamping cavity (20211), a first sleeve mold (202) is fixedly connected to the side of the first connecting block (2021), a radian section (2022) is fixedly connected to the bottom of the first sleeve mold (202), and the first sleeve mold (202) is fixedly connected to a first convex section (2023) through the radian section (2022); A connecting block two (2051) is fixedly connected to the side of the clamping cavity two (2052). A secondary sleeve mold (205) is fixedly connected to the side of the connecting block two (2051). A flat end (2053) is fixedly connected to the bottom of the secondary sleeve mold (205). The secondary sleeve mold (205) is fixedly connected through the flat end (2053) and the convex section two (2054).

5. The hollow automatic processing device for couplers according to claim 4, characterized in that: A convex section one (2023) or a convex section two (2054) is closedly arranged on the upper and lower sides of the convex part (302); The height of the secondary sleeve mold (205) is lower than the height of the primary sleeve mold (202).

6. The hollow automatic processing device for couplers according to any one of claims 1-5, characterized in that: A vertical frame (102) is fixedly connected to the top of the processing table (101). A downward moving push source (103) is installed on the top of the vertical frame (102). A fixed frame (1031) is fixedly connected to the bottom of the output shaft of the downward moving push source (103). A rotation driving source (1032) is fixedly connected to the middle of the fixed frame (1031). The output shaft of the rotation driving source (1032) movably passes through the fixed frame (1031) and is fixedly connected to the up and down push source (1033); An insertion and sliding part (103111) is fixedly connected to the bottom of the fixed frame (1031). The insertion and sliding part (103111) is movably arranged inside an inner ring groove (10319). The inner ring groove (10319) is opened on the surface of the bottom disc (10311). The bottom disc (10311) is movably arranged at the bottom of the fixed frame (1031).

7. The hollow automatic processing device for couplers according to claim 6, characterized in that: Extension frames (10312) are symmetrically arranged on the surface of the bottom disc (10311). A telescopic rotation source (10313) and a counterweight (10314) are respectively installed on the surfaces of the symmetric extension frames (10312). The output shaft of the telescopic rotation source (10313) is fixedly connected to a driving part (10317). The driving part (10317) is transmitted through a transmission part (10316) sleeved on its surface and a driven part (10315). The driven part (10315) is fixedly connected to the surface of the rotating disc (201); A plurality of arc grooves (2011) are annularly distributed on the surface of the rotating disc (201). A moving groove (10318) is correspondingly arranged at the bottom of the arc groove (2011). The moving groove (10318) is opened on the surface of the bottom disc (10311). Clamping pieces (2031) are movably clamped on the upper and lower surfaces of the arc groove (2011) and the moving groove (10318). A middle shaft (203) is fixedly connected to the middle of the clamping piece (2031).

8. The hollow automatic processing device for couplers according to claim 6, characterized in that: A support member (2012) is movably arranged on the top of the bottom disk (10311). The support member (2012) is fixedly connected to the surface of the rotating disk (201). The output shaft of the up-and-down pushing source (1033) movably passes through the rotating disk (201) and the bottom disk (10311) and is fixedly connected to the linkage disk (10332). A number of groups of auxiliary rods (10333) are annularly arranged on the outer side of the linkage disk (10332), and two auxiliary rods (10333) are in a group. A back plate (2033) is movably sleeved on the surface of a group of the auxiliary rods (10333). The top of the back plate (2033) is fixedly connected to a movable sleeve plate (20331). The movable sleeve plate (20331) is movably arranged on the surface of the central shaft (203). The movable sleeve plate (20331) is movably arranged between the clamping piece (2031) and the first rolling roller (2032).

9. The hollow automatic processing device for a coupler according to claim 8, wherein: The bottom of the back plate (2033) is fixedly connected to a first collision support plate (2034). The first collision support plate (2034) is movably sleeved on the surface of the central shaft (203). The bottom of the first collision support plate (2034) is fixedly connected to a driving strip (20341) and a limiting rod (20342). A second collision support plate (2035) is movably arranged on the surface of the limiting rod (20342). The top of the second collision support plate (2035) is fixedly connected to a driven strip (20352).

10. The hollow automatic processing device for a coupler according to claim 9, wherein: An extension plate (204) is arranged between the first collision support plate (2034) and the second collision support plate (2035). A convex plate (2042) is fixedly connected to the side of the extension plate (204) opposite to the rolling head (2041). A transmission wheel (2043) is rotatably arranged on the surface of the convex plate (2042). The driving strip (20341) is meshed and connected to the driven strip (20352) through the transmission wheel (2043).

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