Metal part reaming equipment for automobile manufacturing

Abstract

The invention relates to the field of metal part reaming, and discloses metal part reaming equipment for automobile manufacturing, which comprises a conveying frame, a material storage conveying structure is arranged on the conveying frame, middle grooves are formed in the middles of the front and rear side surfaces of the conveying frame, and material blocking structures are arranged on the edges of the front and rear sides of the upper surface of the conveying frame. Middle plates are installed at the positions, located in the middle grooves, of the inner walls of the front side and the rear side of the conveying frame, limiting plates are connected to the front edge and the rear edge of the upper face of each middle plate, and U-shaped bases are arranged on the middle plates through rotating switching structures. The pipeline is automatically rotated through the transmission structure and the rotary switching structure, the other end of the pipeline is rotated to one side of the reaming head, and the reaming head continues to move for reaming, so that the reaming work of the two ends of the automobile pipeline is realized, the operation is more labor-saving and convenient, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of metal part hole enlarging, in particular to a metal part hole enlarging device used in automobile manufacturing. Background Art

[0002] ‌Metal parts hole expansion‌ refers to the use of a hole expansion drill to further process the already drilled, cast or forged holes to expand the hole diameter and improve the hole processing quality; hole expansion can be used as a pre-processing before finishing the hole, or as the final processing of the hole with low requirements; when processing metal pipes used in automobile manufacturing, hole expansion equipment is required; In the prior art reaming equipment, a deburring unit and a reaming unit are sequentially arranged on the workbench along the feeding direction. One end of the pipe is first deburred by the deburring unit, and then conveyed to the reaming unit by the feeding unit. The reaming unit is located on the other side of the pipe to reaming the other end of the pipe. However, after expanding one end of the pipe, when it is necessary to expand the other end of the pipe, the automobile pipe needs to be rearranged, the deburred end is placed on one side of the expanding unit, and the pipe is re-conveyed to the expanding unit to continue the expanding work. This operation is time-consuming and laborious, and therefore, there is room for improvement. Summary of the invention

[0003] In order to solve the problems mentioned in the background technology, the present invention provides a metal parts hole expanding device for automobile manufacturing.

[0004] The present invention provides a metal parts hole expanding device for automobile manufacturing, which adopts the following technical solution: A metal parts reaming device for automobile manufacturing, comprising a conveying frame, a material storage conveying structure is arranged on the conveying frame, a middle groove is opened in the middle of the front and rear side surfaces of the conveying frame, a material blocking structure is arranged at the front and rear side edges of the conveying frame, a middle plate is installed at the position of the middle groove on the front and rear inner walls of the conveying frame, a limit plate is connected to the front and rear edges of the middle plate, a U-shaped seat is arranged on the middle plate through a rotation switching structure, a placing seat is arranged in the middle of the lower inner wall of the U-shaped seat, a first fixing plate is installed at the lower edge in the middle of the rear side surface of the conveying frame, and a reaming structure is arranged on the first fixing plate; The rotary switching structure includes a rotary column rotatably connected to the middle of the intermediate plate, the U-shaped seat is arranged on the top of the rotary column through the lifting loading and unloading structure, a gear is fixedly sleeved on the bottom of the rotary column, and a driving structure is arranged on the intermediate plate; The driving structure includes a driving plate arranged on the upper part of the middle plate, a third opening is provided on the front side edge of the driving plate, a moving block is provided below the driving plate below the third opening, a guide groove for the moving block to move is provided along the width direction of the middle plate, a first spring is connected between the moving block and a groove wall at one end of the guide groove, a first opening is provided on the driving plate at the position of the rotating column, and teeth meshing with the gear are provided on the inner wall of one side of the first opening; The reaming structure includes a cylinder installed at the top end of a side of the first fixed plate away from the conveying frame, the end of the cylinder output shaft passing through the first fixed plate is connected to a mounting plate, the middle of the mounting plate is installed with a first motor, the edge of the mounting plate is provided with a fixed plate by pulling the rotating structure, a plurality of reaming heads of different sizes are provided on the fixed plate through a connecting structure, the side of the mounting plate is connected to an arc plate below the first motor, and a transmission structure is provided between the arc plate and the driving plate; The transmission structure includes an insertion rod connected to the middle part of the lower side of the arc plate, the driving plate is provided with a first transverse groove at a position close to the first fixed plate, a first groove is provided on one side groove wall of the first transverse groove at a position away from the first fixed plate, a first rotating shaft is rotatably connected to the lower inner wall of the first groove near one of the corners, a stopper is fixed on the first rotating shaft, a torsion spring is connected between the stopper and the lower groove wall of the first groove, and a side of the stopper away from the first fixed plate is an inclined surface, and a second transverse groove is provided on the driving plate at a position close to the first transverse groove, and the second transverse groove and the first transverse groove are connected through an inclined groove. One end of the stopper is pressed against the upper edge of the inclined groove, and a second groove is provided on one side groove wall of the second transverse groove at the position of the inclined groove, and a second rotating shaft is rotatably connected on the lower groove wall of the second groove, a baffle is fixed on the second rotating shaft, a torsion spring is connected between the baffle and the lower groove of the second groove, and the first transverse groove and the second transverse groove are connected through a longitudinal groove between one end close to the first fixed plate, and the bottom end of the insertion rod is movably inserted into the first transverse groove.

[0005] Preferably, the lifting and loading and unloading structure includes a top plate connected to the top of the rotating column, an electric telescopic rod is installed in the middle of the top of the top plate, the top of the output shaft of the electric telescopic rod is connected to the U-shaped seat, and an automatic clamping structure is arranged between the U-shaped seat and the top plate.

[0006] Preferably, the automatic clamping structure includes through grooves provided on the left and right side surfaces of the U-shaped seat, driving blocks are movably passed through the two through grooves, clamps are installed on the side surfaces of the two driving blocks that are close to each other, connecting rods are respectively connected to the side edges of the two driving blocks that are far away from each other, the side of the top plate is connected to a second fixed plate at the bottom of each driving block, a driving groove is provided on the second fixed plate, the bottom end of the connecting rod is connected to a driving frame, the driving frame movably passes through the bottom end of the driving groove, and the top end of the driving groove is shaped.

[0007] Preferably, the pulling and rotating structure includes a sleeve connected to the middle of a side surface of the fixed plate near the first fixed plate, a cross bar is movably inserted into the sleeve, a turntable is installed on one end of the cross bar, the turntable is rotatably installed on the mounting plate, a second spring is sleeved on the cross bar, and the two ends of the second spring are respectively connected to the turntable and the sleeve.

[0008] Preferably, the connecting structure includes a plurality of rotating blocks that rotate through the upper edge of the fixed disk, and the plurality of reaming heads are respectively fixedly mounted on the corresponding rotating blocks. A connecting column is connected to one end of the rotating block away from the reaming head, and a connecting groove is provided on the end face of the connecting column, and the connecting groove is a square groove. A connecting block is installed on one end of the output shaft of the first motor, and the connecting block is movably inserted into the connecting groove, and the end face of the connecting block is square.

[0009] Preferably, the material storage conveying structure includes a rotating rod that rotates through the two ends of the inner wall of the conveying frame, and each of the rotating rods is fixedly provided with a conveying wheel near both ends, and a conveyor belt is tightly fitted between the two conveying wheels of each group, and a plurality of conveying grooves are evenly spaced on the conveyor belt. A storage frame is provided at the left position above the conveying frame, and second openings are provided on the left and right side surfaces of the storage frame, and the front and rear side surfaces of the storage frame are fastened to the conveying frame by fastening plates.

[0010] Preferably, the material blocking structure includes four limit frames installed on the front and rear edges of the conveying frame, a spacing is left between each group of two limit frames, a limit rod is connected between the upper and lower inner walls of each limit frame, and a limit cylinder is movably sleeved on each limit rod.

[0011] In summary, the present invention includes the following beneficial technical effects: 1. The present invention is provided with a rotation switching structure, a hole expansion structure, a lifting loading and unloading structure and a transmission structure. After the hole expansion head on the hole expansion structure moves toward one end of the pipe to expand the hole, when the hole expansion head moves in the opposite direction, the transmission structure and the rotation switching structure are used to automatically rotate the pipe, and the other end of the pipe is rotated to one side of the hole expansion head, and the hole expansion head continues to move to expand the hole, thereby realizing the hole expansion work at both ends of the automobile pipe, the operation is more labor-saving and convenient, and the work efficiency is improved; 2. The present invention is provided with a material storage and conveying structure, which can store the pipes to be expanded, and automatically convey the pipes to the expansion structure in sequence, thereby further improving the expansion work efficiency; 3. The present invention can connect the structure by pulling the rotating structure, and can select the corresponding reaming head according to the actual reaming needs to carry out the reaming work, which is more flexible to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of a metal parts hole expanding device used in automobile manufacturing in an embodiment of the present invention; Figure 2 In the embodiment of the present invention Figure 1 A magnified view of the structure at A; Figure 3 is a schematic structural diagram of the middle plate in an embodiment of the present invention; Figure 4 In the embodiment of the present invention Figure 3 A magnified view of the structure at B; Figure 5 In the embodiment of the present invention Figure 3 A magnified view of the structure at C; Figure 6 It is a structural schematic diagram of the rotary switching structure and the lifting loading and unloading structure in an embodiment of the present invention; Figure 7 is a schematic structural diagram of a hole expansion structure in an embodiment of the present invention; Figure 8 In the embodiment of the present invention Figure 7 Enlarged view of the structure at D.

[0013] Description of reference numerals: 1. conveying frame; 2. middle groove; 3. middle plate; 4. limit plate; 5. driving plate; 6. first opening; 7. moving block; 8. guide groove; 9. first spring; 10. third opening; 11. First transverse groove; 12. First groove; 13. Block; 14. Oblique groove; 15. Second transverse groove; 16. Second groove; 17. Baffle; 18. Longitudinal groove; 19. Insertion rod; 20. First fixing plate; 21. Cylinder; 22. Mounting plate; 23. First motor; 24. Arc plate; 25. Reaming head; 26. Rotating column; 27. Gear; 28. U-shaped seat; 29. ​​Placement seat; 30. Through groove; 31. Electric telescopic rod; 32. Top plate; 33. Driving block ; 34. Clamp; 35. Connecting rod; 36. Driving frame; 37. Second fixed plate; 38. Driving groove; 39. Fixed plate; 40. Rotating block; 41. Connecting column; 42. Connecting block; 43. Connecting groove; 44. Sleeve; 45. Cross bar; 46. Second spring; 47. Rotating rod; 48. Conveying wheel; 49. Conveying belt; 50. Conveying groove; 51. Storage frame; 52. Fastening plate; 53. Second opening; 54. Limiting frame; 55. Limiting rod; 56. Limiting cylinder. DETAILED DESCRIPTION

[0014] The following is combined with Figure 1-Figure 8 The present invention is described in further detail.

[0015] Reference Figure 1-Figure 8 The embodiment of the present invention discloses a metal part reaming device for automobile manufacturing, comprising a conveying frame 1, a material storage conveying structure is arranged on the conveying frame 1, a middle groove 2 is opened in the middle of the front and rear sides of the conveying frame 1, and a material blocking structure is arranged at the front and rear edges of the conveying frame 1, and a middle plate 3 is installed at the position of the middle groove 2 on the inner walls of the front and rear sides of the conveying frame 1, and a limiting plate 4 is connected to the front and rear edges of the middle plate 3, and a U-shaped seat 28 is arranged on the middle plate 3 through a rotating switching structure, and a placing seat 29 is installed in the middle of the lower inner wall of the U-shaped seat 28, and a first fixing plate 20 is installed at the lower edge of the middle of the rear side of the conveying frame 1, and a reaming structure is arranged on the first fixing plate 20; The rotary switching structure includes a rotary column 26 rotatably connected to the middle of the middle plate 3, a U-shaped seat 28 is arranged on the top of the rotary column 26 through a lifting loading and unloading structure, a gear 27 is fixedly sleeved on the bottom of the rotary column 26, and a driving structure is arranged on the middle plate 3; The driving structure includes a driving plate 5 arranged on the middle plate 3, a third opening 10 is provided on the front edge of the driving plate 5, a moving block 7 is provided below the driving plate 5 below the third opening 10, a guide groove 8 for the moving block 7 to move is provided on the middle plate 3 along its width direction, a first spring 9 is connected between the moving block 7 and one end of the groove wall of the guide groove 8, a first opening 6 is provided on the driving plate 5 at the position of the rotating column 26, and teeth meshing with the gear 27 are provided on the inner wall of one side of the first opening 6; The reaming structure includes a cylinder 21 installed at the top of a side of the first fixed plate 20 away from the conveying frame 1, and a mounting plate 22 is connected to one end of the output shaft of the cylinder 21 passing through the first fixed plate 20, and a first motor 23 is installed in the middle of the mounting plate 22. A fixed plate 39 is provided at the edge of the mounting plate 22 by pulling the rotating structure, and a plurality of reaming heads 25 of different sizes are provided on the fixed plate 39 through a connecting structure. An arc plate 24 is connected to the side of the mounting plate 22 below the first motor 23, and a transmission structure is provided between the arc plate 24 and the driving plate 5; The transmission structure includes an insertion rod 19 connected to the middle of the lower part of the arc-shaped plate 24, a first transverse groove 11 is opened on the driving plate 5 at a position close to the first fixed plate 20, a first groove 12 is opened at a position where the groove wall on one side of the first transverse groove 11 is away from the first fixed plate 20, a first rotating shaft is rotatably connected to the lower inner wall of the first groove 12 near one of the corners, a stopper 13 is fixedly sleeved on the first rotating shaft, a torsion spring is connected between the stopper 13 and the lower groove wall of the first groove 12, a side of the stopper 13 away from the first fixed plate 20 is an inclined surface, a second transverse groove 15 is opened on the driving plate 5 at a position close to the first transverse groove 11, the second transverse groove 15 is connected to the first transverse groove 11 through an inclined groove 14, one end of the stopper 13 is pressed against the upper edge of the inclined groove 14, and the second transverse groove A second groove 16 is provided at the position of the inclined groove 14 on one side of the groove wall 15, and a second rotating shaft is rotatably connected to the lower groove wall of the second groove 16, and a baffle 17 is fixedly sleeved on the second rotating shaft, and a torsion spring is connected between the baffle 17 and the lower groove of the second groove 16. The first transverse groove 11 and the second transverse groove 15 are connected by a longitudinal groove 18 at one end close to the first fixed plate 20, and the bottom end of the insertion rod 19 is movably inserted into the first transverse groove 11. When expanding the pipe hole, the cylinder 21 is started to drive the mounting plate 22 to move toward the side close to the automobile pipe, and the first motor 23 is started to drive the corresponding reaming head 25 to rotate, so that the rotating reaming head 25 is used to expand the pipe end, and the mounting plate 22 drives the bottom end of the insertion rod 19 in the process of moving. When the bottom end of the plunger 19 slides to the position of the stopper 13, as the plunger 19 continues to move, the stopper 13 is pushed to rotate toward the first groove 12 with the first rotating shaft as the axis, so that one end of the plunger 19 can continue to slide in the first transverse groove 11, and when the bottom end of the plunger 19 is driven to break away from the stopper 13, the stopper 13 is driven to rotate in the opposite direction under the action of the torsion spring, and the stopper 13 is again pressed against the groove wall of one side of the inclined groove 14. At this time, the movement of the mounting plate 22 drives the rotating reaming head 25 to expand the hole at one end of the pipeline. After the hole is expanded, the cylinder 21 drives the first motor 23 and the reaming head 25 to move in the opposite direction, driving the bottom end of the plunger 19 to slide in the opposite direction in the first transverse groove 11, and at the stopper 13 Under the cover of, the bottom end of the plug rod 19 slides into the inclined groove 14, and the sliding of the bottom end of the plug rod 19 in the inclined groove 14 pushes the driving plate 5 to move on the middle plate 3, driving the first spring 9 to deform, and driving the rotating column 26 to rotate through the gear 27, so as to switch the other end of the pipeline to one side of the reaming head 25. When the bottom end of the plug rod 19 slides from the inclined groove 14 to the second transverse groove 15, the push baffle 17 of the plug rod 19 rotates into the second transverse groove 15 with the second rotating shaft as the axis. As the bottom end of the plug rod 19 continues to move, when the bottom end of the plug rod 19 is separated from the baffle 17, under the action of the torsion spring, the baffle 17 is driven to rotate in the opposite direction and reset. At this time, the cylinder 21 drives the mounting plate 22 to move toward the side close to the pipeline. Under the cover of the baffle 17 to the plug rod 19,The bottom end of the rod 19 can slide smoothly in the second transverse groove 15, thereby driving the rotating reaming head 25 to reame the other end of the pipe. This makes reaming the two ends of the pipe more convenient and improves work efficiency. After reaming, the cylinder 21 drives the mounting plate 22 to move in the opposite direction, driving the bottom end of the rod 19 to slide into the longitudinal groove 18. Under the elastic force of the first spring 9, the driving plate 5 is pushed to move in the opposite direction on the middle plate 3 to reset, so that the bottom end of the rod 19 is reset to the first transverse groove 11 to continue reaming the next pipe.

[0016] See also Figure 1 , Figure 3 , Figure 6 and Figure 7 The lifting and unloading structure includes a top plate 32 connected to the top of the rotating column 26, an electric telescopic rod 31 is installed in the middle of the top of the top plate 32, the top of the output shaft of the electric telescopic rod 31 is connected to the U-shaped seat 28, and an automatic clamping structure is provided between the U-shaped seat 28 and the top plate 32; The automatic clamping structure includes through slots 30 provided on the left and right sides of the U-shaped seat 28, and driving blocks 33 are respectively movably passed through the two through slots 30, and clamping plates 34 are installed on the side surfaces of the two driving blocks 33 close to each other, and connecting rods 35 are respectively connected to the edges of the sides of the two driving blocks 33 away from each other, and the side of the top plate 32 is connected to the second fixing plate 37 below each driving block 33, and the second fixing plate 37 is provided with a driving groove 38, and the bottom end of the connecting rod 35 is connected to a driving frame 36, and the driving frame 36 The movable body passes through the bottom end of the driving groove 38, and the top end of the driving groove 38 is in a Z shape. The electric telescopic rod 31 is started to drive the U-shaped seat 28 to move upward, thereby lifting the pipe to be expanded upward toward the reaming head 25. At the same time, the driving frame 36 at the bottom end of the connecting rod 35 slides upward in the driving groove 38 of the second fixed plate 37. The driving frame 36 squeezes the groove wall of the driving groove 38 to push the driving block 33 to move on the U-shaped seat 28, so that the pipe to be expanded is automatically clamped in the U-shaped seat 28 through the clamping plate 34.

[0017] See also Figure 1 , Figure 7 and Figure 8 The pulling and rotating structure includes a sleeve 44 connected to the middle of a side of the fixed plate 39 near the first fixed plate 20, a cross bar 45 is movably inserted into the sleeve 44, a turntable is mounted on one end of the cross bar 45, and the turntable is rotatably mounted on the mounting plate 22, a second spring 46 is sleeved on the cross bar 45, and the two ends of the second spring 46 are respectively connected to the turntable and the sleeve 44; The connection structure includes a plurality of rotating blocks 40 that rotate through the upper edge of the fixed plate 39, and a plurality of reaming heads 25 are respectively fixedly mounted on the corresponding rotating blocks 40. The end of the rotating block 40 away from the reaming head 25 is connected to a connecting column 41, and a connecting groove 43 is provided on the end surface of the connecting column 41. The connecting groove 43 is a square groove. A connecting block 42 is installed on one end of the output shaft of the first motor 23. The connecting block 42 is movably inserted into the connecting groove 43. The end surface of the connecting block 42 is square. When reaming, it can be adjusted according to the actual situation. To do this, pull the sleeve 44 on the cross bar 45 through the fixed plate 39 to lengthen the second spring 46, then use the rotation of the turntable to rotate the corresponding reaming head 25 to the position of the connecting block 42, then adjust the position of the connecting column 41 on the corresponding reaming head 25, release the fixed plate 39, and under the pulling force of the second spring 46, pull the connecting column 41 to the connecting block 42, so that the corresponding reaming head 25 is connected to the output shaft of the first motor 23, so that the reaming degree can be adjusted, which is more flexible to use.

[0018] See also Figure 1 The material storage conveying structure includes a rotating rod 47 that rotates through the two ends of the inner wall of the conveying frame 1. Each rotating rod 47 is fixedly sleeved with a conveying wheel 48 near both ends. A conveying belt 49 is tightly sleeved between the two conveying wheels 48 of each group. A plurality of conveying grooves 50 are evenly spaced on the conveying belt 49. A storage frame 51 is provided at the left position above the conveying frame 1. Second openings 53 are provided on the left and right side surfaces of the storage frame 51. The front and rear side surfaces of the storage frame 51 are fastened to the conveying frame 1 through fastening plates 52. A second motor is installed on the left side of the rear of the conveying frame 1. The output shaft of the second motor is connected to one end of the corresponding rotating rod 47. The material blocking structure includes four limit frames 54 installed on the front and rear edges of the conveying frame 1, and a spacing is left between each group of two limit frames 54. A limit rod 55 is connected between the upper and lower inner walls of each limit frame 54, and a limit cylinder 56 is movably sleeved on each limit rod 55. When expanding the hole, multiple automobile pipes to be expanded are directly stacked in the storage frame 51, and the second motor is started to drive the rotating rod 47 and the conveying wheel 48 to rotate, so as to drive the conveyor belt 49 to rotate. When the conveying trough 50 on the conveyor belt 49 rotates to the bottom of the storage frame 51, the lowest automobile pipe in the storage frame 51 falls into the conveying trough 50. As the conveyor belt 49 continues to rotate, the automobile pipe is transported to the top of the U-shaped seat 28, thereby realizing the material storage and automatic loading functions.

[0019] The implementation principle of a metal part reaming device for automobile manufacturing according to an embodiment of the present invention is as follows: first, a plurality of automobile pipes to be reamed are stacked in a storage frame 51, and a second motor is started to drive the rotating rod 47 and the conveying wheel 48 to rotate, thereby driving the conveyor belt 49 to rotate. When the conveying groove 50 on the conveyor belt 49 rotates to the bottom of the storage frame 51, the automobile pipe at the bottom of the storage frame 51 falls into the conveying groove 50. As the conveyor belt 49 continues to rotate, the automobile pipe is transported to the top of the U-shaped seat 28. Then, the electric telescopic rod 31 is started to drive the U-shaped seat 28 to move upward, thereby lifting the pipe to be reamed in the U-shaped seat 28 toward the reaming head 25. At the same time, the driving frame 36 at the bottom end of the connecting rod 35 is driven in the driving groove of the second fixed plate 37. 38, and the driving frame 36 is used to squeeze the groove wall of the driving groove 38, so as to push the driving block 33 to move on the U-shaped seat 28, so that the pipe to be expanded is automatically clamped in the U-shaped seat 28 through the clamping plate 34. Then, the cylinder 21 is started to drive the mounting plate 22 to move toward the side close to the automobile pipe, and the first motor 23 is started to drive the corresponding reaming head 25 to rotate, so as to expand the end of the pipe by using the rotating reaming head 25, and the mounting plate 22 drives the bottom end of the insertion rod 19 to move in the first transverse groove 11 toward the side close to the pipe during the movement. When the bottom end of the insertion rod 19 slides to the position of the stopper 13, as the insertion rod 19 continues to move, the stopper 13 is pushed to move toward the first groove 12 with the first rotating shaft as the axis. The piston rod 19 is rotated in the middle, so that one end of the piston rod 19 can continue to slide in the first transverse groove 11, and when the bottom end of the piston rod 19 is driven to disengage from the stopper 13, the stopper 13 is driven to rotate in the opposite direction under the action of the torsion spring, and the stopper 13 is again pressed against the side wall of the inclined groove 14. At this time, the movement of the mounting plate 22 drives the rotating reaming head 25 to expand the hole at one end of the pipe. After the hole is expanded, the cylinder 21 drives the first motor 23 and the reaming head 25 to move in the opposite direction, driving the bottom end of the piston rod 19 to slide in the opposite direction in the first transverse groove 11, and under the cover of the stopper 13, the bottom end of the piston rod 19 slides into the inclined groove 14, and the sliding of the bottom end of the piston rod 19 in the inclined groove 14 is used to push the driving plate 5 to move on the middle plate 3, driving the first spring 9 to deform, and through the gear 27 The rotating column 26 is driven to rotate, thereby switching the other end of the pipe to one side of the reaming head 25. When the bottom end of the plug rod 19 slides from the inclined groove 14 to the second transverse groove 15, the push baffle 17 of the plug rod 19 rotates into the second transverse groove 15 with the second rotating shaft as the axis. As the bottom end of the plug rod 19 continues to move, when the bottom end of the plug rod 19 is separated from the baffle 17, the baffle 17 is driven to rotate in the opposite direction and reset under the action of the torsion spring. At this time, the cylinder 21 drives the mounting plate 22 to move toward the side close to the pipe. Under the shielding of the baffle 17 on the plug rod 19, the bottom end of the plug rod 19 can slide smoothly in the second transverse groove 15, thereby driving the rotating reaming head 25 to expand the other end of the pipe. This makes it more convenient to expand the holes at both ends of the pipe and improves the work efficiency.After the hole is expanded, the cylinder 21 drives the mounting plate 22 to move in the reverse direction, driving the bottom end of the insertion rod 19 to slide into the longitudinal groove 18. Under the elastic force of the first spring 9, the driving plate 5 is pushed to move in the reverse direction on the middle plate 3 to reset, so that the bottom end of the insertion rod 19 is reset to the first transverse groove 11, and the hole expansion work of the next pipe can be continued.

[0020] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A metal parts hole expanding device for automobile manufacturing, comprising a conveying frame (1), characterized in that: The conveying frame (1) is provided with a material storage conveying structure, a middle groove (2) is provided in the middle of the front and rear sides of the conveying frame (1), and a material blocking structure is provided at the front and rear edges of the conveying frame (1). An intermediate plate (3) is installed on the inner walls of the front and rear sides of the conveying frame (1) at the position of the middle groove (2), and a limiting plate (4) is connected to the front and rear edges of the intermediate plate (3). A U-shaped seat (28) is provided on the intermediate plate (3) through a rotating switching structure, and a placement seat (29) is installed in the middle of the lower inner wall of the U-shaped seat (28). A first fixing plate (20) is installed at the lower edge in the middle of the rear side of the conveying frame (1), and a hole expansion structure is provided on the first fixing plate (20); The rotary switching structure comprises a rotary column (26) rotatably connected to the middle of the intermediate plate (3); the U-shaped seat (28) is arranged on the top of the rotary column (26) through a lifting loading and unloading structure; a gear (27) is fixedly sleeved on the bottom of the rotary column (26); and a driving structure is arranged on the intermediate plate (3); The driving structure comprises a driving plate (5) arranged on the upper part of the middle plate (3); a third opening (10) is provided on the front edge of the driving plate (5); a moving block (7) is provided below the driving plate (5) below the third opening (10); a guide groove (8) for the moving block (7) to move is provided on the middle plate (3) along its width direction; a first spring (9) is connected between the moving block (7) and a groove wall at one end of the guide groove (8); a first opening (6) is provided on the driving plate (5) at the position of the rotating column (26); and teeth meshing with the gear (27) are provided on one inner wall of the first opening (6); The reaming structure comprises a cylinder (21) mounted at the top end of a side of a first fixed plate (20) away from the conveying frame (1); an end of an output shaft of the cylinder (21) passing through the first fixed plate (20) is connected to a mounting plate (22); a first motor (23) is mounted in the middle of the mounting plate (22); a fixing plate (39) is arranged at the upper edge of the mounting plate (22) by pulling a rotating structure; a plurality of reaming heads (25) of different sizes are arranged on the fixing plate (39) by a connecting structure; an arc plate (24) is connected to the side of the mounting plate (22) below the first motor (23); a transmission structure is arranged between the arc plate (24) and the driving plate (5); The transmission structure comprises an insertion rod (19) connected to the middle of the lower side of the arc-shaped plate (24); a first transverse groove (11) is provided on the driving plate (5) at a position close to the first fixed plate (20); a first groove (12) is provided on one side of the first transverse groove (11) at a position away from the first fixed plate (20); a first rotating shaft is rotatably connected to the lower inner wall of the first groove (12) near one of the corners; a stopper (13) is fixedly sleeved on the first rotating shaft; a torsion spring is connected between the stopper (13) and the lower groove wall of the first groove (12); a side surface of the stopper (13) away from the first fixed plate (20) is an inclined surface; a second transverse groove (11) is provided on the driving plate (5) at a position close to the first transverse groove (11); The second transverse groove (15) is connected to the first transverse groove (11) through an inclined groove (14), one end of the stopper (13) is pressed against the upper edge of the inclined groove (14), a second groove (16) is provided on one side of the groove wall of the second transverse groove (15) at the position of the inclined groove (14), a second rotating shaft is rotatably connected to the lower groove wall of the second groove (16), a baffle (17) is fixedly sleeved on the second rotating shaft, a torsion spring is connected between the baffle (17) and the lower groove of the second groove (16), the first transverse groove (11) and one end of the second transverse groove (15) close to the first fixed plate (20) are connected through a longitudinal groove (18), and the bottom end of the insertion rod (19) is movably inserted into the first transverse groove (11).

2. The metal parts hole expanding device for automobile manufacturing according to claim 1, characterized in that: The lifting and loading and unloading structure comprises a top plate (32) connected to the top of a rotating column (26); an electric telescopic rod (31) is installed in the middle of the top of the top plate (32); the top end of the output shaft of the electric telescopic rod (31) is connected to a U-shaped seat (28); and an automatic clamping structure is provided between the U-shaped seat (28) and the top plate (32).

3. The metal parts hole expanding device for automobile manufacturing according to claim 2, characterized in that: The automatic clamping structure comprises through grooves (30) provided on the left and right side surfaces of the U-shaped seat (28), driving blocks (33) movably passing through the two through grooves (30), clamping plates (34) being installed on the side surfaces of the two driving blocks (33) close to each other, connecting rods (35) being connected to the edges of the sides of the two driving blocks (33) away from each other, a second fixing plate (37) being connected to the side surface of the top plate (32) below each driving block (33), a driving groove (38) being provided on the second fixing plate (37), a driving frame (36) being connected to the bottom end of the connecting rod (35), the driving frame (36) movably passing through the bottom end of the driving groove (38), and the top end of the driving groove (38) being in a (Z) shape.

4. The metal parts hole expanding device for automobile manufacturing according to claim 1, characterized in that: The pulling and rotating structure comprises a sleeve (44) connected to the middle of a side surface of the fixed disk (39) close to the first fixed plate (20), a cross bar (45) is movably inserted into the sleeve (44), a turntable is mounted on one end of the cross bar (45), and the turntable is rotatably mounted on the mounting disk (22), a second spring (46) is sleeved on the cross bar (45), and two ends of the second spring (46) are respectively connected to the turntable and the sleeve (44).

5. The metal parts hole expanding device for automobile manufacturing according to claim 1, characterized in that: The connection structure comprises a plurality of rotating blocks (40) which rotate and pass through the upper edge of the fixed plate (39); the plurality of reaming heads (25) are respectively fixedly mounted on the corresponding rotating blocks (40); one end of the rotating block (40) away from the reaming head (25) is connected to a connecting column (41); a connecting groove (43) is provided on the end surface of the connecting column (41); the connecting groove (43) is a square groove; a connecting block (42) is mounted on one end of the output shaft of the first motor (23); the connecting block (42) is movably inserted into the connecting groove (43); the end surface of the connecting block (42) is square.

6. The metal parts hole expanding device for automobile manufacturing according to claim 1, characterized in that: The material storage conveying structure comprises a rotating rod (47) which rotates through the two ends of the inner wall of the conveying frame (1); each rotating rod (47) is fixedly sleeved with a conveying wheel (48) near the two ends; a conveying belt (49) is tightly sleeved between the two conveying wheels (48) of each group; a plurality of conveying grooves (50) are evenly spaced on the conveying belt (49); a storage frame (51) is arranged at a left position above the conveying frame (1); a second opening (53) is opened on both left and right side surfaces of the storage frame (51); and front and rear side surfaces of the storage frame (51) are fastened to the conveying frame (1) through fastening plates (52).

7. The metal parts hole expanding device for automobile manufacturing according to claim 1, characterized in that: The material blocking structure comprises four limit frames (54) mounted on the front and rear edges of the conveying frame (1), a spacing being left between each group of two limit frames (54), a limit rod (55) being connected between the upper and lower inner walls of each limit frame (54), and a limit cylinder (56) being movably sleeved on each limit rod (55).

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