Bushing bending device

Abstract

The utility model provides a bush bending device, and relates to the technical field of bush production. The device comprises a workbench, a lower die, an upper die, a driving cylinder, a moving die and a die moving driving assembly, the lower die is arranged on the workbench, the upper die is arranged above the lower die and can be spliced with the lower die to form a forming die cavity used for bending a plate, and the driving cylinder is in transmission connection with the upper die and can drive the upper die to be close to or away from the lower die; a guide groove is formed in the lower die, and the movable die is arranged in the guide groove and can move along the guide groove; the mold moving driving assembly is in transmission connection with the moving mold and can drive the moving mold and the upper mold to be spliced to form a pre-pressing mold cavity when the upper mold and the lower mold are spliced, and the end of the plate can be bent by the pre-pressing mold cavity. The device has the beneficial effects that the end of the to-be-machined plate does not need to be bent in advance, and the machining efficiency is high.

Description

Technical Field

[0001] The present application relates to the technical field of bushing production, and in particular to a bushing bending device. Background Art

[0002] In the existing bushing production, generally a sheet is used as the raw material. First, a bushing bending device is used to bend a sheet into a circular ring-shaped bushing with a seam, and then subsequent processing is carried out on the seam.

[0003] The existing bushing bending device generally includes a lower die, an upper die and a die closing driving device. A groove is formed on the lower die, a convex die head is arranged on the upper die, and the die closing driving device is in transmission connection with the upper die and can drive the upper die to be combined with the lower die, so that the convex die head can be inserted into the groove and a bent bending die cavity is formed between the convex die head and the groove wall, thereby enabling the sheet to be bent and formed by using the bending die cavity.

[0004] However, since the sheet is prone to large-degree springback after being directly bent, workers need to pre-bend the two ends of the sheet first to ensure that the sheet will not have a large springback after being pressed, resulting in many processing procedures and low processing efficiency.

[0005] In view of this, a bushing bending device is needed. Utility Model Content

[0006] In order to solve the problem that the existing bushing bending device needs to pre-bend the ends of the sheet to prevent large springback and has low processing efficiency, the present application provides a bushing bending device.

[0007] The present application provides a bushing bending device, which adopts the following technical solution: It includes a workbench, a lower die, an upper die, a driving cylinder, a moving die and a die moving driving component. The lower die is arranged on the workbench, the upper die is arranged above the lower die and can be combined with the lower die to form a forming die cavity for bending the sheet, and the driving cylinder is in transmission connection with the upper die and can drive the upper die to approach or move away from the lower die;

[0008] A guiding groove is formed on the lower die, and the moving die is arranged in the guiding groove and can move along the guiding groove;

[0009] The die moving driving component is in transmission connection with the moving die and can drive the moving die to be combined with the upper die to form a pre-pressing die cavity when the upper die and the lower die are combined, and the ends of the sheet can be bent by the pre-pressing die cavity.

[0010] By adopting the above technical solution, after placing the plate to be processed on the lower die, the worker can first use the driving cylinder to drive the upper die to approach and assemble with the lower die to form a forming cavity, so that the plate can be bent, and then start the mold shifting drive assembly to drive the movable mold to assemble with the upper die to form a pre-pressing cavity, so that the end of the plate can be bent, so that the plate is not prone to large rebound after the upper die and the lower die are separated, so that the worker does not need to pre-bend the end of the plate to be processed, and the processing efficiency is high.

[0011] Specifically, the upper die includes a bending column, the column body of the bending column is arranged in the horizontal direction, and the lower die is provided with a clearance groove corresponding to the bending column;

[0012] The column body of the bending column can abut against the plate and press the plate into the clearance groove, and the movable mold can abut the end of the plate between the movable mold and the column body of the bending column.

[0013] By adopting the above technical solution, the column body of the compression bending column can press the plate into the give way groove. At this time, the middle part of the plate will bend downward along the arc surface of the lower half of the column body, and the end of the plate will bend upward, so that the movable mold can abut the end between the movable mold and the column body of the compression bending column, so that the end can bend along the arc surface of the upper half of the column body, so that the plate can be compressed and formed around the column body of the compression bending column.

[0014] Furthermore, the upper die also includes a mounting seat, a movable seat and a guide rod, the mounting seat is connected to the piston rod of the driving cylinder, a sliding hole is provided on the movable seat, the top end of the guide rod is connected to the bottom of the mounting seat, the bottom end of the guide rod is inserted into the sliding hole, and the movable seat can approach or move away from the mounting seat along the guide rod;

[0015] One end of the compression bending column is connected to the side wall of the movable seat, and a contact piece is also provided on the top of the mounting seat. When the movable seat abuts against the mounting seat, the contact piece can abut against one end of the compression bending column away from the movable seat.

[0016] By adopting the above technical solution, when the bending column abuts against the plate to be processed, the mounting seat can abut against the movable seat, and the abutment piece can abut against the end of the bending column away from the movable seat, so that the bending column can bend the plate into the clearance groove.

[0017] Furthermore, a limiting protrusion is provided at the opening of the sliding hole, and an abutting protrusion is provided at the bottom end of the guide rod, and the abutting protrusion can abut against the bottom of the limiting protrusion;

[0018] An elastic member is also sleeved on the guide rod. The elastic member is located between the mounting seat and the movable seat and can apply a force to the movable seat to move away from the mounting seat.

[0019] By adopting the above technical solution, the abutment protrusion can abut against the bottom of the limiting protrusion, so that the movable seat is not easily slipped off the guide rod; the elastic member can apply a force to the movable seat away from the mounting seat, so as to be able to provide a buffer between the movable seat and the mounting seat, thereby preventing the plate from being damaged when the bending column bends the plate.

[0020] Furthermore, a pair of guide grooves are relatively opened on the lower mold with the give way groove as the center, and the movable mold can be slidably connected in each guide groove;

[0021] The mold moving driving assembly includes a pair of abutment heads, a pair of mounting plates and a pair of connecting rods, the pair of abutment heads are arranged at the bottom of the mounting seat, and each of the abutment heads is formed with an abutment slope, which gradually inclines from bottom to top toward the direction close to the bending column, and each of the abutment slopes can abut against the corresponding movable mold and push the movable mold toward the bending column;

[0022] A pair of the mounting plates are disposed on the workbench facing each other, the lower mold is located between the plate surfaces of the pair of mounting plates, each of the mounting plates is provided with a guide hole, one end of each of the connecting rods is connected to the corresponding movable mold, and the other end of each of the connecting rods extends in a direction away from the clearance groove and passes through the corresponding guide hole and is screwed to a nut;

[0023] Each of the connecting rods can slide in the guide hole, and a compression spring is provided between each of the nuts and the corresponding mounting plate, and the compression spring can apply a force to the connecting rod to move away from the clearance groove.

[0024] By adopting the above technical solution, when the mounting seat is close to the lower die, the abutment slope on each abutment head can abut against a corresponding movable die, so that a pair of movable dies can be pushed toward the bending column and the end of the plate can be bent; when the mounting seat is away from the lower die, the compression spring can apply a force to the nut on the connecting rod away from the make way groove, so that a pair of movable dies can move in the direction away from the make way groove.

[0025] Furthermore, a positioning column is provided on the workbench, and a positioning sleeve adapted to the positioning column is provided at the bottom of the mounting seat, and when the bending column enters into the clearance groove, the positioning sleeve can be sleeved on the positioning column;

[0026] A buffer spring is sleeved on the positioning column, and the buffer spring can abut against the bottom port of the positioning sleeve.

[0027] By adopting the above technical solution, the buffer spring can form a buffer between the mounting seat and the workbench; the positioning column can cooperate with the positioning sleeve to position the upper mold, so that the upper mold is not prone to skew when it is assembled with the lower mold.

[0028] Furthermore, a ball sleeve is sleeved on the positioning column, and the buffer spring is arranged between the bottom of the ball sleeve and the workbench;

[0029] An abutment ring is provided on the inner wall of the positioning sleeve, and the abutment ring can abut against the top of the ball sleeve.

[0030] By adopting the above technical solution, the arrangement of the ball sleeve can reduce the friction between the positioning sleeve and the positioning column.

[0031] Furthermore, it also includes a discharge assembly, the discharge assembly includes a lifting platform and a driving device, the lifting platform is arranged in the give way groove;

[0032] The driving device is in driving connection with the lifting platform and can drive the lifting platform to move up and down.

[0033] By adopting the above technical solution, after the upper die is separated from the lower die, the driving device can drive the lifting platform to rise and push the bent sheet out of the clearance groove, so that the workers can take out the bent sheet.

[0034] In summary, this application includes the following beneficial technical effects:

[0035] It includes a workbench, a lower die, an upper die, a driving cylinder, a movable die and a die-shifting driving assembly. The lower die is arranged on the workbench, the upper die is arranged above the lower die and can be assembled with the lower die to form a forming cavity for bending a plate. The driving cylinder is transmission-connected to the upper die and can drive the upper die to approach or move away from the lower die. A guide groove is provided on the lower die, and the movable die is arranged in the guide groove and can move along the guide groove. The die-shifting driving assembly is transmission-connected to the movable die and can drive the movable die to be assembled with the upper die to form a pre-pressing cavity when the upper die is assembled with the lower die. The end of the plate can be bent by the pre-pressing cavity, so that the plate is not prone to significant rebound after the upper die and the lower die are separated, thereby enabling workers to pre-bend the end of the plate to be processed without pre-bending the end, thereby achieving high processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a three-dimensional diagram of a bushing bending device of the present application;

[0037] Figure 2 is along Figure 1 A schematic cross-sectional view taken along the center axis of the middle plate;

[0038] Figure 3 yes Figure 2A schematic enlarged view of region A showing the abutment ramp;

[0039] Figure 4 is along Figure 2 Schematic cross-sectional view taken along the center axis of the center guide column.

[0040] Figure numerals: 1. workbench; 11. positioning column; 111. buffer spring; 112. ball sleeve; 2. lower mold; 21. base; 22. limit column; 3. upper mold; 31. bending column; 32. mounting seat; 33. movable seat; 34. guide rod; 341. abutment protrusion; 342. elastic member; 4. driving cylinder; 5. movable mold; 51. supporting plate groove; 6. mold shifting driving assembly; 61. abutment head; 611. abutment slope; 62. mounting plate; 63. connecting rod; 7. unloading assembly; 71. lifting platform; 72. driving device; 8. plate. DETAILED DESCRIPTION

[0041] Figure 1 is a stereoscopic diagram of a bushing bending device of the present application, Figure 2 is along Figure 1 Schematic cross-sectional view of the middle plate taken along the central axis. Figure 1 and Figure 2 The bushing bending device provided in the present application comprises: a workbench 1, a lower die 2, an upper die 3, a driving cylinder 4, a movable die 5 and a die shifting driving assembly 6, wherein the lower die 2 comprises a base 21 and a pair of limiting columns 22, the base 21 is detachably arranged on the workbench 1, the pair of limiting columns 22 are arranged on the base 21 at intervals and are connected to the base 21 by bolts, a clearance groove is formed between the pair of limiting columns 22, and the clearance groove extends all the way to the countersunk hole opened on the base 21; the upper die 3 Arranged above the lower mold 2, the upper mold 3 includes a mounting seat 32, a movable seat 33, a guide rod 34 and a bending column 31. The piston rod of the driving cylinder 4 is connected to the mounting seat 32. A sliding hole is provided on the movable seat 33. The top end of the guide rod 34 is connected to the bottom of the mounting seat 32. The bottom end of the guide rod 34 is inserted into the sliding hole. The movable seat 33 can approach or move away from the mounting seat 32 along the guide rod 34. The column body of the bending column 31 is arranged in the horizontal direction, and one end of the bending column 31 is connected to the side wall of the movable seat 33.

[0042] Figure 3 yes Figure 2 A schematic enlarged view of the region A in FIG. 1 , showing the abutment ramp. Figure 2 and Figure 3A guide groove is provided at the top of each limiting column 22, and a movable mold 5 is provided in each guide groove. Each movable mold 5 can approach or move away from the giving way groove along the guide groove. The mold moving driving assembly 6 includes a pair of abutting joints 61, a pair of mounting plates 62 and a pair of connecting rods 63. The pair of abutting joints 61 are provided at the bottom of the mounting seat 32, and each abutting joint 61 is formed with an abutting inclined surface 611, which is gradually inclined from bottom to top toward the direction close to the bending column 31. Each movable mold 5 is formed with an abutting inclined surface 611. A pair of mounting plates 62 are arranged on the workbench 1 facing each other, and the lower mold 2 is located between the plate surfaces of the pair of mounting plates 62. A guide hole is opened on each mounting plate 62. One end of each connecting rod 63 is connected to the corresponding movable mold 5, and the other end of each connecting rod 63 extends in a direction away from the clearance groove and passes through the corresponding guide hole and is screwed to the nut; each connecting rod 63 can slide in the guide hole, and a compression spring is provided between each nut and the corresponding mounting plate 62, which can apply a force to the connecting rod 63 away from the clearance groove.

[0043] With the above design, after placing the plate 8 to be processed on the lower die 2, the worker can first control the piston rod of the driving cylinder 4 to extend from the cylinder body and drive the mounting seat 32, the moving seat 33 and the bending column 31 to approach the lower die 2. After the bending column 31 abuts against the plate 8, the mounting seat 32 will continue to move downward until it abuts against the moving seat 33, so that the middle part of the plate 8 can bend downward in accordance with the arc surface of the lower half of the column body, while the end of the plate 8 is tilted upward (a gap is formed between the side wall of the limiting column 22 and the column body of the bending column 31). Then the mounting seat 32 will continue to move downward until the abutting inclined surface 611 on each abutting joint 61 can abut against the inclined surface on the corresponding movable mold 5, so that a pair of movable molds 5 can be driven by the abutting joint 61 to synchronously approach the two ends of the plate 8, so that the movable mold 5 can abut the end between the movable mold 5 and the column body of the bending column 31, and then these ends can bend in accordance with the arc surface of the upper half of the column body (a pre-compression mold cavity is formed between the movable mold 5 and the column body of the bending column 31).

[0044] After the sheet 8 is press-bent, the worker can control the piston rod of the driving cylinder 4 to retract into the cylinder body to drive the mounting seat 32, the movable seat 33 and the press-bending column 31 away from the lower die 2. When the mounting seat 32 is away from the lower die 2, the compression spring can apply a force to the nut on the connecting rod 63 away from the clearance groove, so that the pair of movable molds 5 can move in the direction away from the clearance groove; the sheet 8 can be press-bent around the column body of the press-bending column 31 in the above manner, so that the sheet 8 is not prone to large rebound after the upper die 3 and the lower die 2 are separated, so that the workers do not need to pre-bend the end of the sheet 8 to be processed, and the processing efficiency is high.

[0045] Figure 4 is alongFigure 2 Schematic cross-sectional view of the center axis of the center guide column. Figure 2 and Figure 4 The cam 33 is provided with a plurality of protrusions 342, each of which is provided with a plurality of protrusions 343, 344 and 345, respectively, which can be used to adjust the position of the movable seat 33 so as to prevent the movable seat 33 from sliding off the movable seat 33.

[0046] See also Figure 2 and Figure 3 A positioning column 11 is provided on the workbench 1, and a positioning sleeve adapted to the positioning column 11 is provided at the bottom of the mounting seat 32. When the bending column 31 enters the give way groove, the positioning sleeve can be sleeved on the positioning column 11, so that the upper mold 3 can be positioned through the cooperation of the positioning column 11 and the positioning sleeve, so that the upper mold 3 is not easy to be skewed when it is assembled with the lower mold 2; a buffer spring 111 is sleeved on the positioning column 11, and the buffer spring 111 can abut against the bottom port of the positioning sleeve to form a buffer between the mounting seat 32 and the workbench 1; a ball sleeve 112 is also sleeved on the positioning column 11, and the buffer spring 111 is arranged between the bottom of the ball sleeve 112 and the workbench 1; an abutting ring is provided on the inner wall of the positioning sleeve, and the abutting ring can abut against the top of the ball sleeve 112, so that the friction between the positioning sleeve and the positioning column 11 can be reduced through the setting of the ball sleeve 112.

[0047] See also Figure 1 and Figure 2 A bushing bending device also includes a discharge assembly 7, which includes a lifting platform 71 and a driving device 72. The lifting platform 71 is arranged in the clearance groove; the driving device 72 is connected to the lifting platform 71 by transmission, and the driving device 72 can be a hydraulic cylinder to drive the lifting platform 71 to rise and fall. Through the above design, after the upper mold 3 is separated from the lower mold 2, the driving device 72 can drive the lifting platform 71 to rise and push the bent plate 8 out of the clearance groove, so that the workers can easily remove the bent plate 8.

[0048] The working principle of a bushing bending device of the present application when in use is as follows:

[0049] After placing the plate 8 to be processed on the lower die 2, the worker can first control the piston rod of the driving cylinder 4 to extend from the cylinder body and drive the mounting seat 32, the movable seat 33 and the bending column 31 to approach the lower die 2. After the bending column 31 abuts against the plate 8, the mounting seat 32 will continue to move downward until it abuts against the movable seat 33, so that the middle part of the plate 8 can bend downward along the arc surface of the lower half of the column body, while the end of the plate 8 is tilted upward; then the mounting seat 32 will continue to move downward until the abutting inclined surface 611 on each abutting joint 61 can abut against the inclined surface on the corresponding movable die 5, so that a pair of movable dies 5 can be driven by the abutting joint 61 to synchronously approach the two ends of the plate 8, so that the movable die 5 can abut the end against between the movable die 5 and the column body of the bending column 31, so that these ends can bend in accordance with the arc surface of the upper half of the column body; after the plate 8 is bent and formed, the worker can control the piston rod of the drive cylinder 4 to retract into the cylinder body to drive the mounting seat 32, the movable seat 33 and the bending column 31 away from the lower die 2, and when the mounting seat 32 is away from the lower die 2, the compression spring can apply a force to the nut on the connecting rod 63 away from the clearance groove, so that a pair of movable dies 5 can move in the direction away from the clearance groove, so that the plate 8 can be bent and formed around the column body of the bending column 31 in the above manner, so that the plate 8 is not prone to large rebound after the upper die 3 and the lower die 2 are separated, so that the worker does not need to pre-bend the end of the plate 8 to be processed, and the processing efficiency is high.

[0050] It should be noted that the above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A bushing bending device, used for bending a plate into a bushing, characterized in that: The invention comprises a workbench (1), a lower die (2), an upper die (3), a driving cylinder (4), a movable die (5) and a die-moving driving assembly (6); the lower die (2) is arranged on the workbench (1); the upper die (3) is arranged above the lower die (2) and can be assembled with the lower die (2) to form a forming die cavity for bending the plate (8); the driving cylinder (4) is connected to the upper die (3) in a transmission manner and can drive the upper die (3) to move closer to or away from the lower die (2); The lower mold (2) is provided with a guide groove, and the movable mold (5) is arranged in the guide groove and can move along the guide groove; The mold transfer drive assembly (6) is in transmission connection with the movable mold (5) and can drive the movable mold (5) to be assembled with the upper mold (3) to form a pre-pressing mold cavity when the upper mold (3) and the lower mold (2) are assembled, and the end of the plate (8) can be bent by the pre-pressing mold cavity.

2. A bushing bending device according to claim 1, characterized in that: The upper die (3) comprises a bending column (31), the column body of the bending column (31) is arranged in the horizontal direction, and the lower die (2) is provided with a clearance groove corresponding to the bending column (31); The column body of the compression bending column (31) can abut against the plate (8) and press the plate (8) into the clearance groove, and the movable mold (5) can abut the end of the plate (8) between the movable mold (5) and the column body of the compression bending column (31).

3. A bushing bending device according to claim 2, characterized in that: The upper mold (3) further comprises a mounting seat (32), a movable seat (33) and a guide rod (34); the mounting seat (32) is connected to the piston rod of the driving cylinder (4); a sliding hole is provided on the movable seat (33); the top end of the guide rod (34) is connected to the bottom of the mounting seat (32); the bottom end of the guide rod (34) is inserted into the sliding hole; the movable seat (33) can move closer to or farther from the mounting seat (32) along the guide rod (34); One end of the compression bending column (31) is connected to the side wall of the movable seat (33), and a contact piece is also provided on the top of the mounting seat (32). When the movable seat (33) abuts against the mounting seat (32), the contact piece can abut against an end of the compression bending column (31) away from the movable seat (33).

4. A bushing bending device according to claim 3, characterized in that: A limiting protrusion is provided at the opening of the sliding hole, and an abutting protrusion (341) is provided at the bottom end of the guide rod (34), and the abutting protrusion (341) can abut against the bottom of the limiting protrusion; The guide rod (34) is also sleeved with an elastic member (342), which is located between the mounting seat (32) and the movable seat (33) and can exert a force on the movable seat (33) to move away from the mounting seat (32).

5. The bushing bending device according to claim 3, characterized in that: The lower mold (2) is provided with a pair of guide grooves with the clearance groove as the center, and the movable mold (5) can be slidably connected in each guide groove; The mold moving driving assembly (6) comprises a pair of abutment joints (61), a pair of mounting plates (62) and a pair of connecting rods (63); the pair of abutment joints (61) are arranged at the bottom of the mounting seat (32); and each of the abutment joints (61) is formed with an abutment inclined surface (611); the abutment inclined surface (611) is gradually inclined from bottom to top in a direction close to the bending column (31); each of the abutment inclined surfaces (611) can abut against the corresponding movable mold (5) and push the movable mold (5) toward the bending column (31); A pair of the mounting plates (62) are disposed on the workbench (1) facing each other, the lower mold (2) is located between the plate surfaces of the pair of mounting plates (62), each mounting plate (62) is provided with a guide hole, one end of each connecting rod (63) is connected to the corresponding movable mold (5), and the other end of each connecting rod (63) extends in a direction away from the clearance groove and passes through the corresponding guide hole to be screwed to a nut; Each connecting rod (63) is capable of sliding in the guide hole, and a compression spring is provided between each nut and the corresponding mounting plate (62), and the compression spring can apply a force to the connecting rod (63) to move away from the clearance groove.

6. A bushing bending device according to claim 3, characterized in that: The workbench (1) is provided with a positioning column (11), and the bottom of the mounting seat (32) is provided with a positioning sleeve matched with the positioning column (11), and when the bending column (31) enters the clearance groove, the positioning sleeve can be sleeved on the positioning column (11); The positioning column (11) is sleeved with a buffer spring (111), and the buffer spring (111) can abut against the bottom port of the positioning sleeve.

7. A bushing bending device according to claim 6, characterized in that: A ball sleeve (112) is sleeved on the positioning column (11), and the buffer spring (111) is arranged between the bottom of the ball sleeve (112) and the workbench (1); An abutment ring is provided on the inner wall of the positioning sleeve, and the abutment ring can abut against the top of the ball sleeve (112).

8. The bushing bending device according to claim 2, characterized in that: It also includes a discharge assembly (7), the discharge assembly (7) including a lifting platform (71) and a driving device (72), the lifting platform (71) being arranged in the clearance groove; The driving device (72) is in driving connection with the lifting platform (71) and is capable of driving the lifting platform (71) to move up and down.

Images