CN116900148A - Double-servo multi-station press and automatic punching line - Google Patents

Abstract

The invention provides a double-servo multi-station press and an automatic stamping line, and relates to the technical field of forming equipment. The invention controls and plans the servo curve through different servo positions, can realize the motion of incomplete stroke, and improves the yield and the production efficiency.

Description

Double-servo multi-station press and automatic punching line

Technical Field

The invention relates to the technical field of forming equipment, in particular to a double-servo multi-station press and an automatic stamping line.

Background

The new energy automobile popularizes gradually and the new material of automobile body is applied, novel energy-efficient stamping equipment is required, because the stamping is carried out under the condition of single slide block and multiple dies all the time when the multi-station press works, each station cannot be uniformly loaded, and the distances between each station and the center of the press are also different. Therefore, in order to ensure the motion precision of the slide block and the service lives of the transmission system and the die, the unbalanced load problem of the slide block of the multi-station press needs to be overcome.

The product inevitably has a stretching process in the forming process, and most of process arrangement is that the stretching process is placed on the feeding side and is far away from the center of the press, so that the upper die and the lower die of the stretching die can be contacted with dies of other processes before the dies of other processes, and eccentric load is generated by single-side stress of the sliding block, and the problems of high failure rate, unadjustable unbalanced load resistance, low efficiency and the like of the existing single-sliding-block mechanical multi-station press for producing small and medium-sized stamping parts are caused.

Disclosure of Invention

The invention solves the problems that: how to improve the unbalanced load resistance of the press slide block.

To solve the above problems at least to a certain extent, in a first aspect, the present invention provides a dual-servo multi-station press, including an upper beam, a column, a base, and a slider, where the upper beam is connected to the base through a plurality of columns, the slider is located between the columns and slidingly connected to the columns, and an arrangement direction of a plurality of stations is set as a first direction, and the dual-servo multi-station press further includes:

the two groups of driving assemblies are respectively arranged at two ends of the upper beam along the first direction, each driving assembly comprises a first servo motor and a second rotating shaft, and the first servo motor is used for driving the corresponding second rotating shaft to rotate;

the two groups of transmission components are respectively arranged below the two groups of driving components, each group of transmission components comprises a driving end and a transmission end, the driving ends of the two groups of transmission components are respectively and correspondingly connected with two second rotating shafts, the transmission ends of the two groups of transmission components are respectively and correspondingly connected with two ends of the sliding block along the first direction, wherein when the second rotating shafts rotate, the corresponding driving ends of the transmission components eccentrically rotate around the axes of the second rotating shafts, so that the corresponding ends of the sliding block move oppositely or move oppositely relative to the base.

Optionally, the device further comprises two precision detection assemblies, wherein the two precision detection assemblies are respectively arranged on two sides of the sliding block, each precision detection assembly comprises a mounting seat, a supporting rod, a magnetostriction displacement sensor, a sensor sliding block, a ball screw and a guide rail, the mounting seats are connected to the sliding blocks, the mounting seats are connected with one ends of the supporting rods, the other ends of the supporting rods are connected with the sensor sliding blocks through the ball screw, the sensor sliding blocks are slidably connected to the guide rails, the guide rails are connected to the corresponding upright posts, the magnetostriction displacement sensors are connected to the upright posts, each magnetostriction displacement sensor comprises a stainless steel measuring rod and a movable magnetic ring, the movable magnetic ring is sleeved on the stainless steel measuring rod, and the movable magnetic ring is arranged on the sensor sliding blocks.

Optionally, the drive assembly still includes interlock mechanism, interlock mechanism includes gear wheel, driven gear, first pivot, pinion, stopper, driving gear and drive shaft, the output of first servo motor is connected the one end of drive shaft, the cover is equipped with on the drive shaft the driving gear, the other end of drive shaft is connected the stopper, the driving gear meshing driven gear, driven gear suit in the first pivot, the both ends of first pivot are respectively overlapped and are equipped with the pinion, two the pinion respectively mesh one the gear wheel, two the gear wheel suit in the both ends of second pivot.

Optionally, the driving end integrated into one piece of connecting rod is the ring structure, a side eccentric position of gear wheel is equipped with circular bellying, the ring structure rotation cover is located on the circular bellying.

Optionally, the transmission subassembly includes connecting rod, screw rod and guide cylinder, the one end of screw rod with the connecting rod rotates to be connected, the other end of screw rod connect in the guide cylinder, the guide cylinder connect in on the slider, two sets of the connecting rod of transmission subassembly respectively with the both ends of corresponding second pivot are connected and are used for centers on the axis of second pivot makes eccentric rotation.

Optionally, the die filling height adjusting assembly comprises a second servo motor, a first transmission mechanism, a first transmission rod, a second transmission mechanism, a second transmission rod and a nut, wherein the second servo motor is installed on the sliding block, the output end of the second servo motor is in driving connection with the second transmission rod through the first transmission mechanism, the second transmission rod is in driving connection with the first transmission rod through the second transmission mechanism, two ends of the first transmission rod and two ends of the second transmission rod are respectively provided with a worm, worm gears are meshed with the worm gears, the worm gears are rotationally arranged on the guide cylinders, the worm gears are sleeved on the nuts, and the nuts are in threaded connection with the screw rods.

Optionally, still include tie bolt and tensile pad, tie bolt wears to locate in the stand, just tie bolt's both ends wear out respectively the upper beam with the base compresses tightly through the nut, tensile pad's one end connect in the base, the other end is towards keeping away from the direction setting of slider.

Optionally, the device further comprises at least two work tables and a track, wherein the work tables are used for placing the lower die, a plurality of work tables are movably arranged on the track, and the track is fixed on the base.

Optionally, the device further comprises an upper and lower feeding assembly, wherein the upper and lower feeding assembly is used for placing a workpiece into a lower die or taking the workpiece out of the lower die.

In a second aspect, the invention also provides an automatic stamping line comprising a double-servo multi-station press as described above.

Compared with the prior art, the invention has the following beneficial effects:

through setting up the mould at the lower surface of slider, set up the bed die at the upper surface of base, the slider slides from top to bottom along a plurality of stands, makes the mould and bed die cooperation realize the tensile or blanking step of work piece. The two groups of transmission components are respectively arranged below the two groups of driving components, the driving ends of the two connecting rods in the same group are connected with the two ends of the corresponding second rotating shaft, the driving ends of the two connecting rods in the same group are connected with the corresponding sides of the sliding block, so that the driving ends of the four connecting rods are respectively connected with the two sides of the sliding block, stability and reliability in the lifting process of the sliding block are improved, the two sides of the sliding block are respectively controlled by the independent group of driving components and the driving components, so that the two sides of the sliding block are respectively driven, when the two groups of driving components and the driving components synchronously drive the sliding block, the two sides of the sliding block can synchronously receive pressure or tension, so that the whole sliding block moves relatively to the base or moves reversely, stretching or blanking actions are completed, when one side of the sliding block is stressed to generate eccentric load, the group of driving components and the driving components on one side of the sliding block apply pressure to the other side of the sliding block, and the driving components on the other side of the sliding block apply tension to the other side of the sliding block, and a certain offset load deformation problem is offset, and the first servo motor drives the two corresponding connecting rods to rotate around the axis of the second driving end of the sliding block, so that the left and right side of the sliding block can move in opposite directions and different positions can be controlled by the left and right sides of the curve, and the whole motion can be planned and different, and the production and the full-length and the production and the motion can be achieved.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present invention;

FIG. 2 is a cross-sectional view of an embodiment of the present invention;

FIG. 3 is a schematic diagram of a driving assembly and a transmission assembly according to an embodiment of the present invention;

FIG. 4 is a schematic diagram illustrating the installation of a driving assembly and a transmission assembly according to an embodiment of the present invention;

FIG. 5 is a schematic view illustrating a portion of the assembly of the driving assembly and the transmission assembly according to an embodiment of the present invention;

FIG. 6 is a schematic view of a die height adjusting assembly according to an embodiment of the present invention;

FIG. 7 is an enlarged view of the structure at A in FIG. 1;

FIG. 8 is a diagram illustrating a force analysis of a slider under load in accordance with an embodiment of the present invention.

Reference numerals illustrate:

1. a girder is arranged; 2. a column; 3. a base; 4. a drive assembly; 41. a first servo motor; 42. a large gear; 421. a circular boss; 43. a driven gear; 44. a first rotating shaft; 45. a pinion gear; 46. a brake; 47. a drive gear; 48. a second rotating shaft; 49. a drive shaft; 5. a transmission assembly; 51. a screw; 52. a guide cylinder; 53. a connecting rod; 6. tensioning a bolt; 7. stretching the pad; 8. a work table; 9. a slide block; 10. a precision detection assembly; 101. a mounting base; 102. a support rod; 103. magnetostrictive displacement sensor; 104. a sensor slider; 105. ball screw; 106. a guide rail; 11. feeding and discharging components; 12. a die height adjusting assembly; 121. a second servo motor; 122. a first transmission mechanism; 123. a first transmission rod; 124. a second transmission mechanism; 125. and a second transmission rod.

Detailed Description

In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Moreover, in the drawings, the X-axis represents the lateral direction, i.e., the left-right position, and the positive direction of the X-axis (i.e., the arrow of the X-axis is directed) represents the right, and the negative direction of the X-axis (i.e., the direction opposite to the positive direction of the X-axis) represents the left; the Y-axis in the drawing represents the longitudinal direction, i.e., the front-to-back position, and the positive direction of the Y-axis (i.e., the arrow pointing to the X-axis) represents the front, and the negative direction of the Y-axis (i.e., the direction opposite to the positive direction of the X-axis) represents the rear; the Z-axis in the drawing represents vertical, i.e., up-down position, and the positive direction of the Z-axis (i.e., the arrow pointing in the Z-axis) represents up and down, and the negative direction of the Z-axis (i.e., the direction opposite to the positive direction of the Z-axis).

It should also be noted that the foregoing X-axis, Y-axis, and Z-axis are presented for purposes of facilitating description of the invention and simplifying the description, and are not intended to indicate or imply that the devices or elements being referred to must have, be constructed and operated in a particular orientation and are not to be construed as limiting the invention.

Referring to fig. 1, fig. 2, fig. 3 and fig. 4, an embodiment of the present invention provides a dual-servo multi-station press, including an upper beam 1, a column 2, a base 3 and a slider 9, where the upper beam 1 is connected to the base 3 through a plurality of columns 2, the slider 9 is located between the columns 2 and is slidably connected to the columns 2, and an arrangement direction of the stations is set as a first direction, and the dual-servo multi-station press further includes:

the two groups of driving assemblies 4 are respectively arranged at two ends of the upper beam 1 along the first direction, each driving assembly 4 comprises a first servo motor 41 and a second rotating shaft 48, and the first servo motor 41 is used for driving the corresponding second rotating shaft 48 to rotate;

the two sets of transmission assemblies 5 are respectively arranged below the two sets of driving assemblies 4, each set of transmission assembly 5 comprises a driving end and a driving end, the driving ends of the two sets of transmission assemblies 5 are respectively and correspondingly connected with two second rotating shafts 48, the driving ends of the two sets of transmission assemblies 5 are respectively and correspondingly connected with two ends of the sliding block 9 along the first direction, and when the second rotating shafts 48 rotate, the driving ends of the corresponding transmission assemblies 5 eccentrically rotate around the axes of the second rotating shafts 48, so that the corresponding ends of the sliding block 9 move oppositely or reversely relative to the base 3.

As shown in fig. 1, a first station, a second station … …, an nth station, and the like are sequentially disposed on the base 3 from the left side to the right side, for example, the first station is a stretching station, and subsequent stations such as a subsequent second station … …, an nth station, and the like are mainly responsible for the process flows of trimming, flanging, punching, shaping, and the like of a workpiece except for the stretching station of the first station, that is, the first station is a feeding side, the nth station is a discharging side, and because the feeding side is far away from the center of the press, the upper die and the lower die corresponding to the stretching process can contact before the dies of other processes, so that the single side of the slide block 9 is stressed to generate eccentric load.

Specifically, four upright posts 2 can be arranged and are respectively positioned at four corners of the upper surface of the base 3, the sliding block 9 is of a rectangular box body structure with an open top, four edges of the sliding block 9 are respectively and slidably connected with the upright posts 2 at corresponding positions, the lower surface of the sliding block 9 is used for installing an upper die, the upper beam 1 can be of a rectangular frame structure and is shaped into a structure which is convenient for installing the driving components 4, the two driving components 4 are symmetrically arranged at two ends of the upper beam 1, namely the left side and the right side of the upper beam 1, along the X axis direction in fig. 1, the upper surface of the base 3 can be used for arranging a lower die, and the upper die and the lower die are matched to realize the stretching or blanking step of a workpiece; the two sets of transmission assemblies 5 are respectively arranged below the two sets of driving assemblies 4, that is, a set of driving assemblies 4 and transmission assemblies 5 are arranged on the left side of the upper beam 1, a set of driving assemblies 4 and transmission assemblies 5 are arranged on the right side of the upper beam 1, the two sets of driving assemblies 4 and transmission assemblies 5 are respectively independent from each other, and driving ends of two connecting rods 53 in the same set of transmission assemblies 5 are connected with two ends of the second rotating shaft 48 on the same side.

In this embodiment, an upper die is disposed on the lower surface of the slider 9, a lower die is disposed on the upper surface of the base 3, and the slider 9 slides up and down along the plurality of columns 2, so that the upper die and the lower die cooperate to realize the drawing or blanking step of the workpiece. The two groups of transmission components 5 are respectively arranged below the two groups of driving components 4, the driving ends of the two connecting rods 53 in the same group are connected with the two ends of the corresponding second rotating shaft 48, the driving ends of the two connecting rods 53 in the same group are connected with the corresponding sides of the sliding block 9, so that the driving ends of the four connecting rods 53 are respectively connected with the two sides of the sliding block 9, stability and reliability of the sliding block 9 in the lifting process are improved, the two sides of the sliding block 9 are respectively controlled by the independent group of driving components 4 and the transmission components 5, the two sides of the sliding block 9 are respectively driven, when the two groups of transmission components 5 and the transmission components 5 synchronously drive the sliding block 9, the two sides of the sliding block 9 can synchronously bear pressure or tensile force, the whole sliding block 9 moves oppositely or moves oppositely relative to the base 3, and stretching or blanking actions are completed, as shown in fig. 8, when one side of the sliding block 9 is stressed to generate eccentric load, the connecting rod 53 on the side of the sliding block 9 is driven by the group of the driving components 4 and the transmission components 5, the driving component on the other side applies pressure to the sliding block 9, the other side of the sliding block 9 is driven by the driving components 4 and the transmission components 5, the connecting rod 53 on the other side of the sliding block 9 on the side of the sliding block 9 is driven by the other side, the two sides of the sliding rod 53 is driven by the corresponding to the right side of the rotating shaft 48, the two servo shafts are not applied by the corresponding motion of the corresponding axes 48, the two servo motion factors can be completely offset, and the motion of the servo axes is not planned, and the motion of the servo axes is realized, and the motion can be completely has the motion has the problem is achieved, and can not has the motion has the corresponding motion of the servo motion, and has the motion curve, and has the motion has.

The incomplete stroke motion refers to a stroke of eccentric rotation of the driving end of the connecting rod 53 around the axis of the second rotating shaft 48, for example, a full stroke turnover motion stroke of 750mm of the press, when the stretching amount of the workpiece to be punched is small, the driving end of the connecting rod 53 does not need to rotate around the axis of the second rotating shaft 48 for one circle, and only needs to have a turnover motion stroke of 500 mm; the servo position control means independent control of the left and right first servomotors 41; the servo curve planning refers to a track when the driving ends of the corresponding two connecting rods 53 eccentrically rotate around the axis of the second rotating shaft 48 under the independent driving of the left and right first servo motors 41.

In addition, in order to further overcome the eccentric load in the working process of the press, the high-precision movement of the sliding block 9 is kept, the material rigidity of the parts except the first servo motor 41 of the driving assembly 4 near the feeding side and the material rigidity of all the parts except the first servo motor 41 of the driving assembly 4 near the discharging side and all the parts of the driving assembly 5 are larger than the material rigidity of the parts except the first servo motor 41, as shown in fig. 1, the material rigidity of the upper beam 1 part, the upright post 2, the base 3 part and the tightening bolt 6 near the feeding side (left side) is larger than the material rigidity of the upper beam 1 part, the upright post 2, the base 3 part and the tightening bolt 6 near the discharging side (right side), and the diameters of the upright post 2 near the feeding side (left side) are larger than the diameters of the upright post 2 near the discharging side.

Optionally, as shown in fig. 1 and 7, the device further comprises two precision detection assemblies 10, which are respectively arranged on two sides of the sliding block 9, each precision detection assembly 10 comprises a mounting seat 101, a supporting rod 102, a magnetostrictive displacement sensor 103, a sensor sliding block 104, a ball screw 105 and a guide rail 106, the mounting seat 101 is connected to the sliding block 9, the mounting seat 101 is connected with one end of the supporting rod 102, the other end of the supporting rod 102 is connected with the sensor sliding block 104 through the ball screw 105, the sensor sliding block 104 is slidably connected to the guide rail 106, the guide rail 106 is connected to the corresponding upright post 2, the magnetostrictive displacement sensor 103 is connected to the upright post 2, the magnetostrictive displacement sensor 103 comprises a stainless steel measuring rod and a movable magnetic ring, the movable magnetic ring is sleeved on the stainless steel measuring rod, and the movable magnetic ring is arranged on the sensor sliding block 104.

In this embodiment, two precision detecting components 10 are respectively disposed on two sides of the slider 9, that is, on the left and right positions of the slider 9, along the X-axis direction in fig. 1, one end of the sensor slider 104 is connected with the guide rail 106 to form a moving pair, and the other end of the sensor slider 104 is connected with the ball screw 105 to form a spherical pair, so that when the pressure body generates displacement deformation, angular deformation and torsional deformation, the measuring device is not affected by additional external force, thereby ensuring the safety of the precision detecting components 10 and the measuring precision thereof, further measuring the stroke value of the slider 9 in real time, and enabling the first servo motor 41 to perform more precise control by accurately feeding back the precision condition of the slider 9.

Optionally, as shown in fig. 4, the driving assembly 4 further includes a linkage mechanism, where the linkage mechanism includes a large gear 42, a driven gear 43, a first rotating shaft 44, a small gear 45, a brake 46, a driving gear 47 and a driving shaft 49, where an output end of the first servo motor 41 is connected to one end of the driving shaft 49, the driving shaft 49 is sleeved with the driving gear 47, another end of the driving shaft 49 is connected to the brake 46, the driving gear 47 engages with the driven gear 43, the driven gear 43 is sleeved on the first rotating shaft 44, two ends of the first rotating shaft 44 are respectively sleeved with the small gear 45, two small gears 45 respectively engage with one large gear 42, and two large gears 42 are sleeved on two ends of the second rotating shaft 48.

Specifically, the first servo motor 41 may be fixed on the upper beam 1 by a screw, the output end of the first servo motor 41 is connected with the driving shaft 49 by a coupling, the pinion 45 may be a gear ring and is connected with the driving shaft 49 by a key, the large gear 42 and the driven gear 43 may be formed by sleeving the gear ring on a flywheel, the large gear 42 may be connected with the first rotating shaft 44 by a key, the pinion 45 may be connected with the driving shaft 49 by a key, and the gear rings are all helical gears.

In this embodiment, the first servo motor 41 drives the driving shaft 49 to rotate, the driving shaft 49 drives the driven gear 43 to rotate through the driving gear 47, the driven gear 43 drives the pinion 45 on the first rotating shaft 44 to rotate, the pinion 45 drives the corresponding large gear 42 to rotate, thereby driving the second rotating shaft 48 to rotate, the brake 46 plays a braking role, and the brake 46 can apply a certain braking force to reduce the torque of the first servo motor 41, so that the first servo motor 41 stops running; when the first servo motor 41 rotates, the brake 46 applies a certain resistance to prevent the first servo motor 41 from excessively accelerating, thereby ensuring the stable operation of the first servo motor 41.

Alternatively, as shown in fig. 4, the transmission assembly 5 includes a connecting rod 53, a screw 51 and a guide cylinder 52, one end of the screw 51 is rotatably connected with the connecting rod 53, the other end of the screw 51 is connected in the guide cylinder 52, the guide cylinder 52 is connected to the sliding block 9, and the connecting rods 53 of the two sets of transmission assemblies 5 are respectively connected with two ends of the corresponding second rotating shaft 48 and are used for eccentrically rotating around the axis of the second rotating shaft 48.

In this embodiment, the driving end of the connecting rod 53 may rotate the end of the connecting screw 51 through the pin, the sliding block 9 may be internally provided with a cross beam, the guide cylinder 52 may be fixed on the cross beam through a screw, and when the driving end of the connecting rod 53 eccentrically rotates around the axis of the second rotating shaft 48, the driving end of the connecting rod 53 may drive the sliding block 9 to rise or fall, so as to complete the stretching or blanking work.

Alternatively, as shown in fig. 4 and 5, the driving end of the connecting rod 53 is integrally formed into a circular ring structure, a circular protruding portion 421 is disposed at an eccentric position of a side surface of the large gear 42, and the circular ring structure is rotatably sleeved on the circular protruding portion 421.

Specifically, the circular boss 421 may be integrally formed at the same position on the opposite sides of the two large gears 42 on the same side, that is, between the two large gears 42, the driving end of the connecting rod 53 is integrally formed into a circular ring structure, the circular ring structure is sleeved on the outer peripheral surface of the circular boss 421, and the circular ring structure is in sliding contact with the circular boss 421.

In this embodiment, for the single driving assembly 4, two large gears 42 are sleeved on the second rotating shaft 48, when the second rotating shaft 48 rotates, the two large gears 42 rotate concentrically, and the circular protruding portion 421 rotates eccentrically, and since the driving end of the connecting rod 53 is in a circular ring structure and is rotationally connected with the circular protruding portion 421, the connecting rod 53 integrally performs up-and-down pendulum motion, so as to drive the slider 9 to move up and down.

Optionally, as shown in fig. 4 and 6, the die-filling height adjusting assembly 12 is further included, the die-filling height adjusting assembly 12 includes a second servo motor 121, a first transmission mechanism 122, a first transmission rod 123, a second transmission mechanism 124, a second transmission rod 125 and a nut, the second servo motor 121 is installed on the sliding block 9, an output end of the second servo motor 121 is in driving connection with the second transmission rod 125 through the first transmission mechanism 122, the second transmission rod 125 is in driving connection with the first transmission rod 123 through the second transmission mechanism 124, two ends of the first transmission rod 123 and two ends of the second transmission rod 125 are respectively provided with a worm, the worm is meshed with a worm gear, the worm gear is rotationally arranged on the guide cylinder 52, the worm gear is sleeved on the nut, and the nut is in threaded connection with the screw 51.

Specifically, the first transmission mechanism 122 may be two gears meshed with each other, the output shaft of the second servo motor 121 is provided with one gear through a coupling, the other gear is sleeved on the second transmission rod 125, so that the second servo motor 121 drives the second transmission rod 125 to rotate, the second transmission mechanism 124 may be composed of a plurality of bevel gears and a rotating shaft, the first transmission rod 123 and the second transmission rod 125 are respectively sleeved with a driving bevel gear, two ends of the first transmission rod 123 are respectively sleeved with a driven bevel gear, the driving bevel gears are meshed with the corresponding driven bevel gears, the second transmission rod 125 drives the first transmission rod 123 to rotate, two ends of the first transmission rod 123 and two ends of the second transmission rod 125 are respectively connected with a worm, each worm is meshed with a worm wheel in the corresponding guide cylinder 52, the worm wheel can be rotatably installed inside the guide cylinder 52 through a locking sleeve, and the inner ring of the worm wheel can be connected with the screw rod 51 through a key connecting nut.

In this embodiment, the second servo motor 121 drives the second driving rod 125 to rotate through the first driving mechanism 122, and the second driving rod 125 drives the first driving rod 123 to rotate through the second driving mechanism 124, so that the second driving rod 125 and the worms at two ends of the first driving rod 123 synchronously rotate, the worm wheel is driven to rotate, the worm wheel rotates to drive the nut to rotate, the nut rotates to enable the screw 51 to vertically move, so that the screw 51 can retract inside the guide cylinder 52 or extend outside the guide cylinder 52, and the four guide cylinders 52 are positioned at two sides of the sliding block 9, so that the sliding block 9 is convenient to be subjected to multi-point adjustment.

Optionally, as shown in fig. 1, fig. 2 and fig. 3, the device further comprises a tension bolt 6 and a tension pad 7, the tension bolt 6 is arranged in the upright post 2 in a penetrating manner, two ends of the tension bolt 6 respectively penetrate out of the upper beam 1 and the base 3 and are tightly pressed by nuts, one end of the tension pad 7 is connected to the base 3, and the other end of the tension pad is arranged in a direction away from the sliding block 9.

Specifically, the upright post 2 is of a hollow structure, the tension bolt 6 is vertically arranged inside the upright post 2, namely in the Z-axis direction in fig. 1, the upper beam 1 penetrates out of one end of the tension bolt 6, the base 3 penetrates out of the other end of the tension bolt 6, nuts are connected with two ends of the tension bolt 6 in a threaded manner, and the tension pad 7 can be installed on the base 3 through screws.

In this embodiment, the upper surface of the upper beam 1 is pressed against the lower surface of the base 3 by the nut, the stretching pad 7 may be an air cushion, a hydraulic cushion or a servo stretching pad, and the stretching pad 7 has two main functions: firstly, the edge of a plate is tightly pressed in the drawing process, so that the workpiece is not wrinkled in the drawing process, the pressing force of the pressing edge is generated, and secondly, the formed workpiece is ejected from the lower die when the drawing or blanking process is finished, and the force ejecting force for ejecting the workpiece is generated.

Optionally, as shown in fig. 1, the device further comprises at least two work tables 8 and a track, the work tables 8 are used for placing the lower mold, the plurality of work tables 8 are movably arranged on the track, and the track is fixed on the base 3.

Specifically, the rail may be welded or screwed to the base 3 and arranged in the Y-axis direction in fig. 1, and two mutually parallel may be provided, and the table 8 may be a traveling carriage, with wheels of the traveling carriage being rollingly provided on the upper surface of the rail, and the upper surface of the traveling carriage being placed with the lower mold.

In this embodiment, by setting at least two working tables 8, one working table 8 works inside the press, and the rest working tables 8 change the lower die outside the press, when the lower die needs to be changed, the working table 8 in the press is moved to one side of the track, and then the working table 8 with the changed lower die is moved to the inside of the press, thereby reducing the occupation of the lower die to the working time of the press.

Optionally, as shown in connection with fig. 1, the device further comprises an upper and lower feeding assembly 11, wherein the upper and lower feeding assembly 11 is used for placing a workpiece into or taking the workpiece out of the lower die.

In this embodiment, the loading and unloading assembly 11 may be a robot loading and unloading or a manual loading and unloading or a coil feeding or a progressive mode loading and unloading, as shown in fig. 1, in this embodiment, the loading and unloading assembly 11 is a three-coordinate manipulator, the three-coordinate manipulator is mounted on the upright posts 2 on two sides, and the X-axis track of the three-coordinate manipulator is along the X-axis direction in fig. 1.

Another embodiment of the present invention also provides an automatic stamping line including the double-servo multi-station press as above, which has the same advantages as above because of having the double-servo multi-station press as above.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. The utility model provides a double-servo multistation press, includes roof beam (1), stand (2), base (3) and slider (9), roof beam (1) pass through a plurality of stand (2) with base (3) are connected, slider (9) are located a plurality of between stand (2) and sliding connection in a plurality of on stand (2), establish the range direction of a plurality of stations and be first direction, its characterized in that, double-servo multistation press still includes:

the two groups of driving assemblies (4) are respectively arranged at two ends of the upper beam (1) along the first direction, each driving assembly (4) comprises a first servo motor (41) and a second rotating shaft (48), and the first servo motor (41) is used for driving the corresponding second rotating shaft (48) to rotate;

the two groups of transmission components (5) are respectively arranged below the two groups of driving components (4), each group of transmission components (5) comprises a driving end and a driving end, the driving ends of the two groups of transmission components (5) are respectively and correspondingly connected with two second rotating shafts (48), the driving ends of the two groups of transmission components (5) are respectively and correspondingly connected with two ends of the sliding block (9) along the first direction, wherein when the second rotating shafts (48) rotate, the driving ends of the corresponding transmission components (5) eccentrically rotate around the axis of the second rotating shafts (48), so that the corresponding ends of the sliding block (9) relatively move or reversely move in opposite directions relative to the base (3).

2. The dual-servo multi-station press machine according to claim 1, further comprising two precision detection assemblies (10), wherein the two precision detection assemblies are respectively arranged on two sides of the sliding block (9), each precision detection assembly (10) comprises a mounting seat (101), a supporting rod (102), a magnetostrictive displacement sensor (103), a sensor sliding block (104), a ball screw (105) and a guide rail (106), the mounting seats (101) are connected to the sliding block (9), the mounting seats (101) are connected to one ends of the supporting rods (102), the other ends of the supporting rods (102) are connected to the sensor sliding blocks (104) through the ball screw (105), the sensor sliding blocks (104) are connected to the guide rails (106), the guide rails (106) are connected to the corresponding upright posts (2), the magnetostrictive displacement sensor (103) comprises a stainless steel magnetic ring and a moving sleeve, the moving sleeve is arranged on the stainless steel magnetic ring, and the moving sleeve is arranged on the stainless steel magnetic ring sensor sliding block (104).

3. The dual-servo multi-station press as claimed in claim 2, wherein the driving assembly (4) further comprises a linkage mechanism, the linkage mechanism comprises a large gear (42), a driven gear (43), a first rotating shaft (44), a small gear (45), a brake (46), a driving gear (47) and a driving shaft (49), the output end of the first servo motor (41) is connected with one end of the driving shaft (49), the driving gear (47) is sleeved on the driving shaft (49), the other end of the driving shaft (49) is connected with the brake (46), the driving gear (47) is meshed with the driven gear (43), the driven gear (43) is sleeved on the first rotating shaft (44), two ends of the first rotating shaft (44) are respectively sleeved with the small gear (45), two small gears (45) are respectively meshed with one large gear (42), and two large gears (42) are sleeved on two ends of the second rotating shaft (48).

4. A dual-servo multi-station press as claimed in claim 3, wherein the transmission assembly (5) comprises a connecting rod (53), a screw rod (51) and a guide cylinder (52), one end of the screw rod (51) is rotatably connected with the connecting rod (53), the other end of the screw rod (51) is connected in the guide cylinder (52), the guide cylinder (52) is connected to the sliding block (9), and the connecting rods (53) of the two groups of transmission assemblies (5) are respectively connected with two ends of the corresponding second rotating shafts (48) and are used for eccentrically rotating around the axis of the second rotating shafts (48).

5. The dual-servo multi-station press as claimed in claim 4, wherein the driving end of the connecting rod (53) is integrally formed into a circular ring structure, a circular protruding portion (421) is arranged at an eccentric position of one side surface of the large gear (42), and the circular ring structure is rotatably sleeved on the circular protruding portion (421).

6. The dual-servo multi-station press machine according to claim 5, further comprising a die-filling height adjusting assembly (12), wherein the die-filling height adjusting assembly (12) comprises a second servo motor (121), a first transmission mechanism (122), a first transmission rod (123), a second transmission mechanism (124), a second transmission rod (125) and a nut, the second servo motor (121) is mounted on the sliding block (9), the output end of the second servo motor (121) is in driving connection with the second transmission rod (125) through the first transmission mechanism (122), the second transmission rod (125) is in driving connection with the first transmission rod (123) through the second transmission mechanism (124), two ends of the first transmission rod (123) and two ends of the second transmission rod (125) are respectively provided with a worm, the worm is meshed with a worm, the rotation is arranged on the guide cylinder (52), the nut is sleeved on the nut, and the worm wheel is in threaded connection with the worm wheel (51).

7. The double-servo multi-station press machine according to claim 1, further comprising a tension bolt (6) and a tension pad (7), wherein the tension bolt (6) is arranged in the upright post (2) in a penetrating manner, two ends of the tension bolt (6) respectively penetrate out of the upper beam (1) and the base (3) and are pressed by nuts, one end of the tension pad (7) is connected with the base (3), and the other end of the tension pad is arranged in a direction away from the sliding block (9).

8. The dual-servo multi-station press as claimed in claim 1, further comprising at least two tables (8) and a rail, wherein the tables (8) are used for placing a lower die, a plurality of the tables (8) are movably arranged on the rail, and the rail is fixed on the base (3).

9. The dual servo multi-station press as claimed in claim 1, further comprising an up-down assembly (11), wherein the up-down assembly (11) is used for putting a workpiece into or taking a workpiece out of the lower die.

10. An automatic stamping line comprising a double-servo multi-station press as claimed in any one of claims 1 to 9.