A wheel hub spinning device

Abstract

The invention discloses a wheel hub spinning device in the field of wheel hub processing and manufacturing, comprising a preheating furnace, the preheating furnace comprising a furnace body arranged horizontally, a heating chamber arranged inside the furnace body, an openable feeding door and a discharging door respectively arranged at the front and rear ends of the furnace body, an automatic manipulator which can transfer the wheel hub on the discharging trolley to the spinning mechanism is arranged corresponding to the discharging trolley; the spinning mechanism comprises a base and a top seat arranged correspondingly up and down, two side seats corresponding to the left and right are arranged between the base and the top seat, a rotatable rotating seat is arranged on the base, a lower die is installed on the rotating seat, during spinning, the wheel hub is correspondingly placed upside down on the lower die, a driven rotating assembly which can be lifted and lowered is arranged on the top seat, an upper die is installed on the lower side of the driven rotating assembly, and the upper die presses the upper end face of the wheel hub; a heating flame spraying assembly and a spinning knife assembly are respectively arranged on the two side seats. The invention can automatically send the preheated wheel hub to the spinning mechanism for automatic spinning, thereby improving the spinning efficiency.

Description

Technical Field

[0001] The invention belongs to the field of wheel hub processing and manufacturing, and particularly relates to a wheel hub spinning device. Background Art

[0002] In the prior art, there is a mold and a working method for direct spinning of a cast aluminum alloy wheel blank, and the patent application number is 201611054549.4; the application date is 2016.11. 25; the structure includes a casting mold top mold, a spinning mold upper mold and a spinning mold lower mold, the lower end of the spinning mold upper mold is provided with an aluminum alloy wheel blank processing piece, the bottom of the aluminum alloy wheel blank processing piece is provided with a cylindrical mating surface, the bottom of the mating surface is provided with the spinning mold lower mold, and three spinning rollers arranged in a herringbone manner are provided on both sides of the aluminum alloy wheel blank processing piece. When the mold and the working method are used, the production cycle of the product is shortened and the production cost is reduced, but the disadvantage is that it is impossible to realize the automated and efficient processing and forming from the preheating of the wheel hub to the spinning process, the mechanization degree is not high enough, and the efficiency of the wheel hub spinning process is low. Summary of the invention

[0003] The purpose of the present invention is to provide a wheel hub spinning device, which can realize automated and efficient processing and forming from wheel hub preheating to spinning. The preheated wheel hub is automatically sent out from the furnace body, and the preheated wheel hub is automatically sent to the spinning mechanism by a manipulator for automatic spinning, thereby improving the spinning efficiency.

[0004] The object of the present invention is achieved as follows: a wheel hub spinning device comprises a preheating furnace, the preheating furnace comprises a transversely arranged furnace body, a heating chamber is arranged inside the furnace body, a plurality of conveying rollers arranged in sequence along the transverse direction are arranged in the furnace body below the heating chamber, the left and right ends of each conveying roller are rotatably supported on the corresponding side walls of the furnace body, one end of each conveying roller extends out of the furnace body and is transmission-connected to a rotating drive mechanism, the front and rear ends of the furnace body are respectively provided with an openable feeding door and a discharging door, and a feeding trolley and an discharging trolley are respectively provided corresponding to the feeding door and the discharging door. A material trolley is provided with an automatic manipulator corresponding to the discharging trolley, which can transfer the wheel hub on the discharging trolley to the spinning mechanism; the spinning mechanism includes a base and a top seat correspondingly arranged up and down, and two side seats corresponding to the left and right are arranged between the base and the top seat, and a rotatable rotating seat is provided on the base, and a lower mold is installed on the rotating seat. During spinning, the wheel hub is placed upside down on the lower mold, and a liftable driven rotating component is provided on the top seat, and an upper mold is installed on the lower side of the driven rotating component, and the upper mold presses the upper end surface of the wheel hub; a heating flame-spraying component and a spinning knife component are respectively provided on the two side seats.

[0005] When the present invention is working, the wheel hub enters the furnace body through the feeding trolley for preheating, the conveying roller sends the heated wheel hub to the discharging trolley outside the furnace body, and then the automatic manipulator transfers the wheel hub on the trolley to the lower mold of the rotating seat, and the heating flame assembly heats the wheel hub to the spinning temperature. Then the upper mold descends to press the upper end of the wheel hub, the rotating seat drives the wheel hub to rotate, and the spinning knife spins against the side of the wheel hub to maintain the spinning temperature of the wheel hub until the spinning operation is completed. Compared with the prior art, the beneficial effect of the present invention is that it can realize automated and efficient processing and forming from wheel hub preheating to spinning processing, the preheated wheel hub is automatically sent out from the furnace body, and the preheated wheel hub is automatically sent to the spinning mechanism by the manipulator for automatic spinning, thereby improving the spinning efficiency.

[0006] In order to separate the wheel hub from the flame in the heating chamber and prevent the wheel hub from being burned, a furnace chamber with a rectangular cross section is provided inside the furnace body, and a plurality of exhaust pipes are arranged in sequence along the length direction on the upper part of the furnace chamber, each exhaust pipe extends upward from the furnace body and is connected to a exhaust fan, and a plurality of horizontal fire partitions are arranged at intervals along the length direction in the furnace chamber, and a heat transfer interval is left between the two adjacent fire partitions, and a heating chamber is formed above each fire partition, and a plurality of burners extending into the heating chamber are arranged at intervals along the length direction on the side of the furnace body, and each burner is located above the corresponding fire partition, and each exhaust pipe is arranged one by one with each burner. The heat in the heating chamber is transferred to the wheel hub through the heat transfer interval, and the exhaust pipe discharges the smoke.

[0007] In order to facilitate the conveying of the hub, each of the conveying rollers is located below the fireproof board. The conveying rollers include a hollow tube. The left and right ends of the hollow tube are fitted with mounting sleeves. A rotating shaft is fitted into the mounting sleeve. One rotating shaft is rotatably connected to a support on the side of the furnace body. The other rotating shaft is rotatably supported on a support on the other side of the furnace body and extends outward. A double sprocket is sleeved on the extended end of the other rotating shaft. The rotating drive mechanism includes a plurality of drive motors 1 arranged at equal intervals laterally on the side of the furnace body. The active sprocket at the output end of the drive motor 1 is connected to the corresponding double sprocket via a chain. Each rotating shaft equipped with a double sprocket is divided into a plurality of sections corresponding to each drive motor 1. The two adjacent double sprockets on the left and right of each section are linked by a chain, and the hub is supported on each conveying roller. The conveying rollers of the corresponding sections are driven by multiple drive motors respectively, and the power is evenly distributed.

[0008] In order to separate the feeding area and the discharging area from the furnace body to avoid high temperature burns, several temperature sensors are arranged at intervals along the horizontal side of the furnace body, two rows of parallel hubs are placed on each conveying roller in the furnace body, the feeding door and the discharging door are movably connected to the corresponding end face of the furnace body in the vertical direction, and two feeding trolleys and two discharging trolleys are arranged on the left and right. Several rotatable transmission rollers are arranged in sequence along the horizontal direction on the surface of the feeding trolley and the discharging trolley. The bottom of the feeding trolley and the discharging trolley is provided with an articulated seat, which is hinged to the end of the piston rod of the pushing cylinder, and the cylinder body of the pushing cylinder is hinged to the articulated seat on the ground. The temperature sensor can detect the temperature inside the furnace body, and the pushing cylinder pushes the feeding trolley and the discharging trolley to move forward and backward to facilitate feeding and discharging.

[0009] As a further improvement of the present invention, the rotating seat is arranged on a rotating platform, a pulley 1 is sleeved on the rotating shaft of the rotating platform, the pulley 1 is connected to the pulley at the output end of the vertical reduction motor through a transmission belt, and the reduction motor is arranged on the side of the spinning mechanism. The motor drives the rotating seat to rotate through the pulley mechanism.

[0010] In order to facilitate the lifting of the wheel hub after spinning to realize blanking, the lower mold includes a bottom mold and a lifting mold, the middle part of the bottom mold is provided with an embedding groove for accommodating the lifting mold, the embedding groove includes a lower circular section and an upper expanded diameter section, the lifting mold includes a lower primary mold and an upper secondary mold, the height of the primary mold is less than the height of the circular section of the embedding groove, the middle part of the secondary mold is provided with a center groove, the upper end of the first mold is provided with an upward convex annular positioning boss, the lower end of the secondary mold is provided with a downward extended positioning part that fits the inner periphery of the annular positioning boss, the upper part of the secondary mold is provided with a positioning surface corresponding to the inner side of the wheel hub, the surface wall of the positioning surface is provided with a protective cushion layer, and the lower surface of the upper mold is matched with the upper part of the wheel hub. The lifting mold is raised to lift the wheel hub for blanking, and the nylon protective cushion layer plays a role in protecting the wheel hub.

[0011] In order to slowly lift the lifting mold and unload the material, a positioning groove is provided in the middle of the first-level mold, and the positioning groove includes a small diameter section at the top and a large diameter section at the bottom. The separation column passes through the bottom mold from the small diameter section of the positioning groove and extends downward. The outer periphery of the separation column is provided with a positioning step that matches the large diameter section of the positioning groove. The lower part of the bottom mold is provided with a lower groove. The outer periphery of the separation column is provided with a limit baffle. A through hole that allows the separation column to pass through is provided in the middle of the limit baffle. The limit baffle is attached to the lower side of the bottom mold at the lower groove. The lower end of the separation column is fixedly connected with an end cap. The outer periphery of the separation rod is provided with a spring 1 located between the limit baffle and the end cap. The lifting oil cylinder slowly lifts the separation rod. Under the buffering action of the spring 1, the first-level mold and the second-level mold are slowly raised to avoid directly lifting the wheel hub and preventing the wheel hub from being damaged due to hard contact.

[0012] In order to further provide buffer protection when the wheel hub is lifted up and unloaded, and when the manipulator places the wheel hub on the lower die, a pad is provided between the bottom wall of the embedding groove and the primary die, a through hole for accommodating the separation rod to pass through is provided in the middle of the pad, a center positioning rod is vertically provided on the upper side of the primary die, the lower end of the center positioning rod is matched with the small diameter section of the positioning groove, an annular positioning plate supported on the surface of the primary die is provided on the outer periphery of the center positioning rod, the center positioning rod passes upward through the center hole of the wheel hub, a plug hole is provided in the middle of the upper die, and a fixing sleeve is provided in the plug hole , the rebound rod passes through the fixed sleeve, the upper end of the rebound rod is provided with an upper baffle supported on the upper end of the fixed sleeve, the lower end of the rebound rod is provided with a lower baffle, and the outer peripheral sleeve of the rebound rod is provided with a spring 2, which is located between the lower baffle and the fixed sleeve; the first-level mold is evenly distributed along the circumference, and the corresponding limit pins are provided with pin holes on the second-level mold, and the pin holes include an upper hole section and a lower hole section. The upper end of the limit pin is inserted into the upper hole section, and the outer peripheral sleeve of the limit pin is provided with a spring 3, and the two ends of the spring 3 elastically contact the upper part of the lower hole section and the surface of the first-level mold respectively. When the wheel hub is not installed on the lower mold, the spring 3 lifts the secondary mold, and after the wheel hub is placed on the lower mold, the secondary mold slowly descends to play a protective role; at the same time, when the separation rod is lifted, the springs 1 and 3 simultaneously buffer the lifting force to protect the wheel hub from being damaged; when the upper mold is lifted, the spring 2 pushes the lower baffle downward so that the center positioning rod will not be lifted with the wheel hub and the upper mold.

[0013] As a further improvement of the present invention, the driven rotating assembly includes a lifting plate, the upper mold is rotatably connected to the lower side of the lifting plate through a rotating head, a lifting cylinder is provided on the top seat, a piston rod of the lifting cylinder passes through the top seat and is connected to the lifting plate, and a plurality of guide rods passing through the top seat are provided on the upper side of the lifting plate. The lifting cylinder drives the lifting plate to rise and fall.

[0014] As a further improvement of the present invention, the heating flame spraying assembly is a burner, and the spinning knife assembly includes a movable knife holder, on which a rough spinning knife and a fine spinning knife corresponding to each other are rotatably arranged, and the axes of the rough spinning knife and the fine spinning knife are arranged obliquely. The wheel hub is firstly rough-spun and then fine-spun, and the processing accuracy is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a top view of the present invention.

[0016] Figure 2 This is the front view of the preheating furnace.

[0017] Figure 3 This is an enlarged view of the discharge trolley.

[0018] Figure 4 This is a cross-sectional view of the preheating furnace.

[0019] Figure 5 for Figure 4 A partial enlarged view of .

[0020] Figure 6 It is a structural schematic diagram of the spinning mechanism.

[0021] Figure 7 It is a schematic diagram of the structure of the upper die and the lower die.

[0022] Figure 8 for Figure 7 Enlarged view of point A in the middle.

[0023] Fig. 9 for Figure 7 Enlarged view of point B in the middle.

[0024] Fig.10 This is an enlarged view of the fine spinning knife.

[0025] Fig.11 It is a top view of the rough spinning tool and the fine spinning tool.

[0026] Among them, 1 preheating furnace, 2 furnace body, 2a furnace cavity, 3 heating cavity, 4 conveying roller, 4a hollow tube, 4b mounting sleeve, 4c rotating shaft, 5 feeding door, 5a feeding trolley, 6 discharging door, 6a discharging trolley, 7 automatic manipulator, 8 base, 9 top seat, 10 side seat, 11 rotating seat, 12 lower mold, 1201 bottom mold, 1202 lifting mold, 1202a primary mold, 1202b secondary mold, 13 upper mold, 14 smoke exhaust pipe, 14a smoke exhaust fan, 15 fireproof board, 16 burner, 17 support, 18 double sprocket, 19 driving motor 1, 19a driving sprocket, 20 temperature sensor, 21 transmission roller, 22 articulated seat, 23 pushing cylinder, 24 rotating platform, 24a rotating shaft , 25 pulley one, 26 reduction motor, 26a pulley two, 27 embedded groove, 27a circular section, 27b expansion section, 28 center groove, 29 positioning boss, 30 downward extension positioning portion, 31 protective cushion layer, 32 positioning groove, 33 separation column, 33a positioning step, 34 limit baffle, 35 end cover, 36 spring one, 37 pad, 38 center positioning rod, 38a positioning disk, 39 jack, 40 fixed sleeve, 41 rebound rod, 41a upper baffle, 41b lower baffle, 42 spring two, 43 limit pin, 44 pin hole, 45 spring three, 46 lifting plate, 47 rotating head, 48 lifting cylinder, 49 guide rod, 50 tool holder, 51 rough spinning knife, 52 fine spinning knife, 53 wheel hub. DETAILED DESCRIPTION

[0027] like Figure 1-11As shown, a hub spinning device includes a preheating furnace 1, which includes a furnace body 2 arranged transversely, a heating chamber 3 is arranged inside the furnace body 2, and a plurality of conveying rollers 4 arranged in sequence along the transverse direction are correspondingly arranged below the heating chamber 3 in the furnace body 2, and the left and right ends of each conveying roller 4 can be rotatably supported on the corresponding side wall of the furnace body 2, one end of each conveying roller 4 extends out of the furnace body 2 and is transmission-connected to the rotating drive mechanism, and the front and rear ends of the furnace body 2 are respectively provided with an openable feeding door 5 and a discharging door 6, and a feeding trolley 5a and a discharging trolley 6a are respectively provided corresponding to the feeding door 5 and the discharging door 6, and the discharging trolley 6a is correspondingly provided with an automatic manipulator 7 which can transfer the wheel hub 53 on the discharge trolley 6a to the spinning mechanism; the spinning mechanism includes a base 8 and a top seat 9 which are correspondingly arranged up and down, and two side seats 10 corresponding to the left and right are arranged between the base 8 and the top seat 9, and a rotatable rotating seat 11 is arranged on the base 8, and a lower mold 12 is installed on the rotating seat 11. During spinning, the wheel hub 53 is correspondingly placed upside down on the lower mold 12, and a liftable driven rotating assembly is arranged on the top seat 9, and an upper mold 13 is installed on the lower side of the driven rotating assembly, and the upper mold 13 presses the upper end surface of the wheel hub 53; a heating flame spraying assembly and a spinning knife assembly are respectively provided on the two side seats 10.

[0028] In order to separate the hub 53 from the flame in the heating chamber 3 and prevent the hub 53 from being burned, a furnace chamber 2a with a rectangular cross section is provided inside the furnace body 2. A plurality of exhaust pipes 14 are arranged in sequence along the length direction on the upper part of the furnace chamber 2a. Each exhaust pipe 14 extends upward from the furnace body 2 and is connected to an exhaust fan 14a. A plurality of horizontal fire partitions 15 are arranged at intervals along the length direction in the furnace chamber 2a. A heat transfer interval is left between two adjacent fire partitions 15. A heating chamber 3 is formed above each fire partition 15. A plurality of burners 16 extending into the heating chamber 3 are arranged at intervals along the length direction on the side of the furnace body 2. Each burner 16 is located above the corresponding fire partition 15. Each exhaust pipe 14 is arranged in one-to-one correspondence with each burner 16. The heat in the heating chamber 3 is transferred to the hub 53 through the heat transfer interval, and the exhaust pipe 14 discharges the smoke. In order to facilitate the conveying of the hub 53, each conveying roller 4 is located below the fireproof board 15. The conveying roller 4 includes a hollow tube 4a. The left and right ends of the hollow tube 4a are fitted with mounting sleeves 4b. A rotating shaft 4c is fitted into the mounting sleeve 4b. One rotating shaft 4c is rotatably connected to the support 17 on the side of the furnace body 2. The other rotating shaft 4c is rotatably supported on the support 17 on the other side of the furnace body 2 and extends outward. The extended end of the other rotating shaft 4c is sleeved with a double sprocket 18. The rotary drive mechanism includes a plurality of drive motors 19 arranged at equal intervals laterally on the side of the furnace body 2. The active sprocket 19a at the output end of the drive motor 19 is connected to the corresponding double sprocket 18 through a chain. Each rotating shaft 4c equipped with a double sprocket 18 is divided into a plurality of sections corresponding to each drive motor 19. The two adjacent double sprockets 18 on the left and right of each section are linked by a chain. The hub 53 is supported on each conveying roller 4. The conveying rollers 4 of the corresponding sections are driven by a plurality of drive motors, and the power distribution is uniform.

[0029] In order to separate the feeding area and the discharging area from the furnace body 2 to avoid high temperature burns, a number of temperature sensors 20 are arranged at intervals along the horizontal direction on the side of the furnace body 2, two rows of parallel hubs 53 are placed on each conveying roller 4 in the furnace body 2, the feeding door 5 and the discharging door 6 are both movably connected to the corresponding end faces of the furnace body 2 in the vertical direction, and two feeding trolleys 5a and discharging trolleys 6a are arranged on the left and right, and the surfaces of the feeding trolleys 5a and the discharging trolleys 6a are arranged in sequence along the horizontal direction. A hinge seat 22 is arranged at the bottom of the feeding trolley 5a and the discharging trolley 6a, and the hinge seat 22 is hinged to the piston rod end of the push cylinder 23, and the cylinder body of the push cylinder 23 is hinged to the hinge seat 22 on the ground. The temperature sensor 20 can detect the temperature inside the furnace body 2, and the push cylinder 23 pushes the feeding trolley 5a and the discharging trolley 6a to move forward and backward, which is convenient for feeding and discharging.

[0030] The rotating seat 11 is arranged on the rotating platform 24, and a pulley 1 25 is sleeved on the rotating shaft 24a of the rotating platform 24. The pulley 1 25 is connected to the pulley 2 26a at the output end of the vertical reduction motor 26 through a transmission belt. The reduction motor 26 is arranged on the side of the spinning mechanism. The motor drives the rotating seat 11 to rotate through the pulley mechanism.

[0031] In order to facilitate the lifting of the wheel hub 53 after spinning to realize unloading, the lower mold 12 includes a bottom mold 1201 and a lifting mold 1202. The middle of the bottom mold 1201 is provided with an embedding groove 27 for accommodating the lifting mold 1202. The embedding groove 27 includes a circular section 27a at the bottom and an expanded diameter section 27b at the top. The lifting mold 1202 includes a primary mold 1202a at the bottom and a secondary mold 1202b at the top. The height of the primary mold 1202a is less than the circular section 27a of the embedding groove 27. The height of the segment 27a, the middle of the secondary mold 1202b is provided with a central groove 28, the upper end of the primary mold 1202a is provided with an upwardly convex annular positioning boss 29, the lower end of the secondary mold 1202b is provided with a downwardly extending positioning portion 30 that fits the inner circumference of the annular positioning boss 29, the upper part of the secondary mold 1202b is provided with a positioning surface corresponding to the inner side of the hub 53, the surface wall of the positioning surface is provided with a protective cushion layer 31, and the lower surface of the upper mold 13 is matched with the upper part of the hub 53. The lifting mold 1202 is raised to lift the hub 53 to unload the material, and the nylon protective cushion layer 31 plays a role in protecting the hub 53.

[0032] In order to slowly lift the lifting mold 1202 and unload the material, a positioning groove 32 is opened in the middle of the first-stage mold 1202a, and the positioning groove 32 includes a small diameter section at the top and a large diameter section at the bottom. The separation column 33 passes through the bottom mold 1201 from the small diameter section of the positioning groove 32 and extends downward. The outer periphery of the separation column 33 is provided with a positioning step 33a that matches the large diameter section of the positioning groove 32. A lower groove is provided at the lower part of the bottom mold 1201. A limiting baffle 34 is sleeved on the outer periphery of the separation column 33. A through hole is opened in the middle of the limiting baffle 34 for accommodating the separation column 33 to pass through. The limiting baffle 34 is attached to the lower side of the bottom mold 1201 at the lower groove. The lower end of the separation column 33 is fixedly connected with an end cover 35, and a spring 36 is provided on the outer periphery of the separation rod and is located between the limiting baffle 34 and the end cover 35.

[0033] In order to further provide buffer protection when the wheel hub 53 is lifted up and unloaded, and when the manipulator places the wheel hub 53 on the lower mold 12, a pad 37 is arranged between the bottom wall of the embedding groove 27 and the primary mold 1202a, and a through hole is provided in the middle of the pad 37 for accommodating the separation rod to pass through. A center positioning rod 38 is vertically arranged on the upper side of the primary mold 1202a, and the lower end of the center positioning rod 38 cooperates with the small diameter section of the embedding groove 32, and an annular positioning plate 38a supported on the surface of the primary mold 1202a is arranged on the outer periphery of the center positioning rod 38, and the center positioning rod 38 passes through the center hole of the wheel hub 53 upwardly, and a plug hole 39 is provided in the middle of the upper mold 13, and a fixing sleeve 40 is arranged in the plug hole 39, and a rebound rod 4 1 passes through the fixing sleeve 40, the upper end of the rebound rod 41 is provided with an upper baffle 41a supported on the upper end of the fixing sleeve 40, the lower end of the rebound rod 41 is provided with a lower baffle 41b, and the outer periphery of the rebound rod 41 is provided with a spring 2 42, and the spring 2 42 is located between the lower baffle 41b and the fixing sleeve 40; a plurality of vertical limit pins 43 are evenly distributed along the circumferential direction on the primary die 1202a, and a pin hole 44 is opened on the secondary die 1202b corresponding to the limit pin 43, and the pin hole 44 includes an upper hole section and a lower hole section, the upper end of the limit pin 43 is inserted into the upper hole section, and the outer periphery of the limit pin 43 is provided with a spring 3 45, and the two ends of the spring 3 45 elastically abut against the upper part of the lower hole section and the surface of the primary die 1202a respectively.

[0034] The driven rotating assembly includes a lifting plate 46, the upper mold 13 is rotatably connected to the lower side of the lifting plate 46 via a rotating head 47, a lifting cylinder 48 is provided on the top seat 9, the piston rod of the lifting cylinder 48 passes through the top seat 9 and is connected to the lifting plate 46, and a plurality of guide rods 49 passing through the top seat 9 are provided on the upper side of the lifting plate 46. The lifting cylinder 48 drives the lifting plate 46 to rise and fall. The heating flame spraying assembly is a burner 16, and the spinning knife assembly includes a movable knife holder 50, on which a rough spinning knife 51 and a fine spinning knife 52 corresponding to each other are rotatably provided, and the axes of the rough spinning knife 51 and the fine spinning knife 52 are inclined. The hub 53 is first roughly spun and then finely spun, and the processing accuracy is higher.

[0035] When the present invention is working, the wheel hub 53 enters the furnace body 2 through the feeding trolley 5a for preheating, and the conveying roller 4 sends the heated wheel hub 53 to the discharging trolley 6a outside the furnace body 2, and then the automatic manipulator 7 transfers the wheel hub 53 on the trolley to the lower mold 12 of the rotating seat 11, and the heating flame assembly heats the wheel hub 53 to the spinning temperature, and then the upper mold 13 descends to press the upper end of the wheel hub 53, and the rotating seat 11 drives the wheel hub 53 to rotate, and the spinning knife spins the side of the wheel hub 53 to maintain the spinning temperature of the wheel hub 53 until the spinning operation is completed; the wheel hub 53 is not installed When the lower die 12 is on, the spring three 45 lifts the secondary die 1202b, and after the wheel hub 53 is placed on the lower die 12, the secondary die 1202b slowly descends to play a protective role; after the spinning is completed, when the ejection cylinder lifts the separation rod, the spring one 36 and the spring three 45 buffer the lifting force at the same time, protecting the wheel hub 53 from being injured, so that the primary die 1202a and the secondary die 1202b are slowly raised to avoid directly lifting the wheel hub 53; when the upper die 13 is raised, the spring two 42 pushes the lower baffle plate 41b downward so that the center positioning rod 38 will not be lifted with the wheel hub 53 and the upper die 13. The advantages of the present invention are: it can realize the automated and efficient processing and forming from the preheating of the wheel hub 53 to the spinning process, the preheated wheel hub 53 is automatically sent out from the furnace body 2, and the preheated wheel hub 53 is automatically sent to the spinning mechanism by the manipulator for automatic spinning, thereby improving the spinning efficiency.

Claims

1. A wheel hub spinning device, characterized in that: The invention comprises a preheating furnace, wherein the preheating furnace comprises a furnace body arranged transversely, a heating chamber is arranged inside the furnace body, and a plurality of conveying rollers arranged in sequence along the transverse direction are arranged correspondingly in the furnace body and located below the heating chamber, and the left and right ends of each conveying roller are rotatably supported on the corresponding side walls of the furnace body, and one end of each conveying roller extends out of the furnace body and is transmission-connected with the rotating drive mechanism, and the front and rear ends of the furnace body are respectively provided with an openable feeding door and a discharging door, and a feeding trolley and a discharging trolley are respectively provided corresponding to the feeding door and the discharging door, and an automatic manipulator which can transfer the wheel hub on the discharging trolley to the spinning mechanism is provided corresponding to the discharging trolley; the spinning mechanism comprises a base and a top seat arranged correspondingly in upper and lower positions, and a There are two corresponding side seats on the left and right, the base is provided with a rotatable rotating seat, the rotating seat is installed with a lower mold, during spinning, the wheel hub is correspondingly placed upside down on the lower mold, the top seat is provided with a liftable driven rotating assembly, the lower side of the driven rotating assembly is installed with an upper mold, the upper mold presses the upper end surface of the wheel hub; the two side seats are respectively provided with a heating flame spraying assembly and a spinning knife assembly; the lower mold includes a bottom mold and a lifting mold, the middle part of the bottom mold is provided with an embedding groove for accommodating the lifting mold, the embedding groove includes a lower circular section and an upper expanded diameter section, the lifting mold includes a lower primary mold and an upper secondary mold, the height of the primary mold is less than the height of the circular section of the embedding groove, the middle part of the secondary mold is provided with a center groove, and the upper end of the primary mold is provided with an upward convex annular fixed The lower end of the secondary mold is provided with a downward extended positioning part which is fitted with the inner circumference of the annular positioning boss, the upper part of the secondary mold is provided with a positioning surface corresponding to the inner side of the wheel hub, and the surface wall of the positioning surface is provided with a protective cushion layer, and the lower surface of the upper mold is matched with the upper part of the wheel hub; a positioning groove is provided through the middle part of the primary mold, and the positioning groove includes a small diameter section at the top and a large diameter section at the bottom, and the separation column passes through the bottom mold from the small diameter section of the positioning groove and extends downward, and a positioning step matching the large diameter section of the positioning groove is provided on the outer periphery of the separation column, and a lower groove is provided at the lower part of the bottom mold, and a limiting baffle is provided on the outer periphery of the separation column, and a through hole for accommodating the separation column to pass through is provided in the middle of the limiting baffle, and the limiting baffle is fitted on the lower side of the bottom mold at the lower groove, and the lower end of the separation column is fixed An end cover is connected, and a spring 1 located between the limit baffle and the end cover is arranged on the outer periphery of the separation rod; a pad is arranged between the bottom wall of the embedded groove and the primary mold, and a through hole for accommodating the separation rod to pass through is opened in the middle of the pad, a center positioning rod is vertically arranged on the upper side of the primary mold, and the lower end of the center positioning rod cooperates to embed into the small-diameter section of the positioning groove, and an annular positioning disk supported on the surface of the primary mold is arranged on the outer periphery of the center positioning rod, and the center positioning rod passes through the center hole of the wheel hub upward, and a plug hole is opened in the middle of the upper mold, and a fixing sleeve is arranged in the plug hole, and the rebound rod cooperates to pass through the fixing sleeve, and an upper baffle supported on the upper end of the fixing sleeve is arranged at the upper end of the rebound rod, and a lower baffle is arranged at the lower end of the rebound rod, and a spring 2 is arranged on the outer periphery of the rebound rod, and the spring 2 is located between the lower baffle and the fixing sleeve;A plurality of vertical limit pins are evenly distributed along the circumference of the first-stage die, and a pin hole is opened on the second-stage die corresponding to the limit pin. The pin hole includes an upper hole section and a lower hole section. The upper end of the limit pin is inserted into the upper hole section. A spring three is sleeved on the outer circumference of the limit pin. The two ends of the spring three are elastically pressed against the upper part of the lower hole section and the surface of the first-stage die respectively. ; 2. A wheel hub spinning device according to claim 1, characterized in that: A furnace cavity with a rectangular cross-section is arranged inside the furnace body, and a plurality of smoke exhaust pipes are arranged in sequence along the length direction on the upper part of the furnace cavity, each smoke exhaust pipe extends upward from the furnace body and is connected to a smoke exhaust fan, a plurality of horizontal fire partitions are arranged at intervals along the length direction in the furnace cavity, a heat transfer distance is left between two adjacent fire partitions in front and behind, and a heating cavity is formed above each fire partition, and a plurality of burners extending into the heating cavity are arranged at intervals along the length direction on the side of the furnace body, each burner is located above the corresponding fire partition, and each smoke exhaust pipe is arranged in one-to-one correspondence with each burner.

3. A wheel hub spinning device according to claim 2, characterized in that: Each of the conveying rollers is located below the fire isolation board, and the conveying roller includes a hollow tube, and the left and right ends of the hollow tube are cooperated with inserted with mounting sleeves, and a rotating shaft is cooperated with inserted in the mounting sleeve, one rotating shaft is rotatably connected to a support on the side of the furnace body, and the other rotating shaft is rotatably supported on the support on the other side of the furnace body and extends outward, and a double sprocket is sleeved on the extended end of the other rotating shaft, and the rotating drive mechanism includes a plurality of driving motors 1 arranged at equal intervals laterally on the side of the furnace body, and the active sprocket at the output end of the driving motor 1 is transmission-connected with the corresponding double sprocket via a chain, and each rotating shaft equipped with a double sprocket is divided into a plurality of sections corresponding to each driving motor 1, and the two adjacent double sprockets on the left and right of each section are linked by a chain, and the hub is supported on each conveying roller.

4. A wheel hub spinning device according to any one of claims 1 to 3, characterized in that: A plurality of temperature sensors are arranged at intervals along the lateral direction on the side of the furnace body, two rows of parallel wheel hubs are placed on each conveying roller in the furnace body, the feed door and the discharge door are movably connected to the corresponding end face of the furnace body along the vertical direction, two feed trolleys and two discharge trolleys are arranged on the left and right respectively, and a plurality of rotatable transmission rollers are arranged in sequence along the lateral direction on the surface of the feed trolley and the discharge trolley, and an articulated seat is arranged at the bottom of the feed trolley and the discharge trolley, which is hinged to the end of the piston rod of the pushing cylinder, and the cylinder body of the pushing cylinder is hinged to the articulated seat on the ground.

5. A wheel hub spinning device according to any one of claims 1 to 3, characterized in that: The rotating seat is arranged on a rotating platform, a pulley 1 is sleeved on the rotating shaft of the rotating platform, the pulley 1 is connected to the pulley at the output end of the vertical reduction motor through a transmission belt, and the reduction motor is arranged on the side of the spinning mechanism.

6. A wheel hub spinning device according to any one of claims 1 to 3, characterized in that: The driven rotating assembly includes a lifting plate, the upper mold is rotatably connected to the lower side of the lifting plate via a rotating head, a lifting cylinder is provided on the top seat, a piston rod of the lifting cylinder passes through the top seat and is connected to the lifting plate, and a plurality of guide rods passing through the top seat are provided on the upper side of the lifting plate.

7. A wheel hub spinning device according to any one of claims 1 to 3, characterized in that: The heating flame spraying assembly is a burner, and the spinning knife assembly comprises a movable knife holder, on which a coarse spinning knife and a fine spinning knife corresponding to each other are rotatably arranged, and the axes of the coarse spinning knife and the fine spinning knife are arranged obliquely.

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