CN213033361U

CN213033361U - Eccentric connecting rod driven two-degree-of-freedom edge folding device

Info

Publication number: CN213033361U
Application number: CN202021838444.XU
Authority: CN
Inventors: 王金荣; 周祥; 陈晖�; 王尚斌; 陈扬东; 田斌
Original assignee: Jiangsu Yawei Machine Tool Co Ltd
Current assignee: Jiangsu Yawei Machine Tool Co Ltd
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2021-04-23
Anticipated expiration: 2030-08-28

Abstract

The utility model discloses an eccentric connecting rod driven two-degree-of-freedom edge folding device in the field of sheet metal processing forming machine tools, a pressing mechanism for pressing a workpiece is arranged on a frame, an edge folding die for bending the workpiece is arranged corresponding to the pressing mechanism, the edge folding die is arranged on an edge folding beam, the edge folding beam is connected on a sliding support through a longitudinal motion mechanism, the sliding support is connected on the frame through a transverse motion mechanism, the transverse motion mechanism comprises a transverse guide rail arranged on the frame, a transverse sliding block is arranged in the transverse guide rail in a matching way, and the transverse sliding block is fixed at the bottom of the sliding support; a transverse driving motor is fixed on the rack, an output shaft of the transverse driving motor is in transmission connection with a crankshaft, a main journal of the crankshaft is rotatably arranged on the rack, a connecting rod journal is connected with one end of a connecting rod, and the other end of the connecting rod is movably connected to a sliding support. The device realizes fast forward and fast backward of the beam flanging beam and improves the response speed of the machine tool. It can be used for the flanging of various plate members.

Description

Eccentric connecting rod driven two-degree-of-freedom edge folding device

Technical Field

The utility model relates to a sheet metal working forming machine, in particular to flanging machine.

Background

In the chinese patent database, a bending mechanism is disclosed, and its application number: CN 201821572050.7; the application date is: 20180926, respectively; the publication number is: CN 209272187U; the publication date is: 20190820, respectively; the device comprises a horizontal bending driving device, wherein a horizontal bending shaft arranged in the horizontal direction is arranged on the horizontal bending driving device; the horizontal bending shaft is provided with a linkage bracket; the upper end of the linkage support is also provided with an upper and lower bending driving device, the upper and lower bending driving device is provided with an upper and lower bending shaft in the vertical direction, the shaft end of the upper and lower bending shaft is provided with a flanging die support, and the upper and lower ends of the flanging die support are respectively provided with an upper flanging die and a lower flanging die which correspond to each other in the upper and lower positions; the device also comprises a downward pressing driving lifting device, the downward pressing driving lifting device is vertically arranged, a downward pressing shaft of the downward pressing driving lifting device extends downwards, and a pressing plate is arranged at the shaft end of the downward pressing driving lifting device; the press plate is provided with a detachable upper press knife, and a lower press knife fixedly arranged is arranged below the upper press knife; the upper and lower flanging dies correspond to the upper and lower pressing knives.

The disadvantages are that: firstly, in the transverse direction, the action speed of the flanging die is slow, and the rapid translation of the flanging die is difficult to realize. And secondly, the shaft ends of the upper bending shaft and the lower bending shaft of the device are provided with the flanging die support, so that a large deflection torque can be generated during working, unbalance loading is easy to occur, and the use reliability of the machine tool is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an eccentric connecting rod driven two degree of freedom hem device for hem roof beam and hem mould can the quick travel in horizontal direction, improve the response speed of lathe.

The purpose of the utility model is realized like this: a two-degree-of-freedom edge folding device driven by an eccentric connecting rod comprises a rack, wherein a pressing mechanism used for pressing a workpiece is arranged on the rack, an edge folding die used for bending the workpiece is arranged corresponding to the pressing mechanism, the edge folding die is arranged on an edge folding beam, the edge folding beam is connected to a sliding support through a longitudinal movement mechanism, the sliding support is connected to the rack through a transverse movement mechanism, the transverse movement mechanism comprises a transverse guide rail arranged on the rack, a transverse sliding block is arranged in the transverse guide rail in a matched mode, and the transverse sliding block is fixed to the bottom of the sliding support; a transverse driving motor is fixed on the rack, an output shaft of the transverse driving motor is in transmission connection with a crankshaft, a main journal of the crankshaft is rotatably arranged on the rack, a connecting rod journal eccentrically arranged with the main journal is connected with one end of a connecting rod, and the other end of the connecting rod is movably connected to the sliding support.

The utility model discloses during operation, the hem mould has the motion degree of freedom of horizontal and vertical two directions, through horizontal driving motor through the position that crankshaft connecting rod drove the quick translation of hem roof beam to needs processing, the work piece can carry out the hem processing with the work piece through vertical motion mechanism after hold-down mechanism is fixed. Due to the arrangement of the crankshaft and the connecting rod mechanism, the folded beam can be fast-forwarded and fast-retreated through the eccentric motion of the connecting rod mechanism, and the response speed of the machine tool is improved. More importantly, the structure has the advantages that when the folding beam is closer to the workpiece, the connecting rod is closer to the dead point position, so that the moving speed of the folding beam is slower, the collision force between the workpiece and the folding beam can be reduced, and particularly, the technical effect of safety and reliability is achieved in the process of trial run adjustment feeding. The utility model discloses it is convenient to implement, and is with low costs, can be used to the hem processing of various plates.

As a further improvement of the invention, the longitudinal movement mechanism comprises a longitudinal driving motor arranged on the sliding support, the output end of the longitudinal driving motor is in transmission connection with a longitudinal screw rod through a speed reducer and a coupling, the upper end and the lower end of the longitudinal screw rod are respectively and rotatably arranged on the sliding support through an upper bearing assembly and a lower bearing assembly, the back of the flanging beam is provided with a hole or a groove which longitudinally penetrates through the flanging beam, the longitudinal screw rod penetrates through the hole or the groove, a longitudinal nut is meshed with the longitudinal screw rod and is fixedly connected with the flanging beam. The upper end and the lower end of the longitudinal screw rod are respectively and rotatably arranged on the sliding support through the upper bearing assembly and the lower bearing assembly, so that the two ends of the screw rod are strongly supported and restrained, and the bearing capacity of the screw rod is strong; the back of the flanging beam is provided with a hole or a groove which longitudinally penetrates through the flanging beam, and the longitudinal screw rod penetrates through the hole or the groove, so that the distance from the flanging die to the screw rod can be shortened, the force arm is reduced, the machine tool is not easy to generate unbalance loading, and the use reliability of the device is improved.

The further improvement is that the longitudinal nut is arranged at the top position of the hole or the groove, and can be arranged at the outer side of the top, also can be arranged at the inner side of the top or can be embedded at the top. Alternatively, the longitudinal nut is mounted in the bore or slot. The device can ensure that the folded edge beam has a certain up-and-down movement space, and aims to shorten the length of the longitudinal wire rod as much as possible, so that the distance between the upper bearing assembly and the lower bearing assembly is shortened, and the bearing strength is improved.

In order to further strengthen the support, the flanging beam is connected with the sliding support through a longitudinal guide rail and a longitudinal sliding block, and the longitudinal sliding block is arranged in the longitudinal guide rail in a matching way.

The utility model discloses in, two cantilevers are stretched out respectively at both ends about the hem roof beam, make the hem roof beam section be C shape, and the hem mould includes hemming die and lower hemming die, goes up hemming die and sets up the inboard in opposite directions at the C shape opening of hem roof beam respectively with lower hemming die. The side surface of the flanging beam extends out of a cantilever to enable the section of the flanging beam to be in a horizontal T shape, the flanging die is installed on the cantilever, and the flanging die comprises an integral flanging die with an upper bending part and a lower bending part. The two modes can conveniently carry out flanging processing on the workpiece.

In order to further ensure reliable connection, the transverse driving motor is connected with the crankshaft through an expansion sleeve.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of a partially-assembled three-dimensional structure of the hemming beam.

Fig. 3 is another schematic structural diagram of the present invention.

Fig. 4 is a partially enlarged view of a in fig. 3.

In the figure, 1 machine frame, 2 lower bearing assemblies, 3 longitudinal sliding blocks, 4 longitudinal guide rails, 5 lower flanging dies, 6 pressing mechanisms, 7 upper flanging dies, 8 longitudinal nuts, 9 upper bearing assemblies, 10 couplers, 11 reducers, 12 longitudinal driving motors, 13 longitudinal screw rods, 14 flanging beams, 15 sliding supports, 16 connecting rods, 17 crankshafts, 18 transverse sliding blocks, 19 transverse guide rails, 20 transverse driving motors, 21 integral flanging dies, 21a upper bending parts, 21b lower bending parts and 22 expansion sleeves.

Detailed Description

Example 1

As shown in fig. 1-2, a two-degree-of-freedom edge folding device driven by an eccentric connecting rod 16 structurally comprises a frame 1, wherein a pressing mechanism 6 for pressing a workpiece is arranged on the frame 1, an edge folding die for bending the workpiece is arranged corresponding to the pressing mechanism 6, the edge folding die is arranged on an edge folding beam 14, the edge folding beam 14 is connected to a sliding support 15 through a longitudinal movement mechanism, the sliding support 15 is connected to the frame 1 through a transverse movement mechanism, the transverse movement mechanism comprises a transverse guide rail 19 arranged on the frame 1, a transverse sliding block 18 is arranged in the transverse guide rail 19 in a matched manner, and the transverse sliding block 18 is fixed at the bottom of the sliding support 15; a transverse driving motor 20 is fixed on the frame 1, an output shaft of the transverse driving motor 20 is in transmission connection with a crankshaft 17, an expansion sleeve 22 is adopted for transmission connection in the embodiment, other transmission connection modes in the prior art can also be adopted, and direct transmission or indirect transmission can be adopted, for example, direct drive connection, connection through a coupler 10, belt transmission, gear transmission and other connection modes are adopted; the main journal of the crankshaft 17 is rotatably arranged on the frame 1, the connecting rod journal eccentrically arranged with the main journal is connected with one end of the connecting rod 16, and the other end of the connecting rod 16 is movably connected on the sliding support 15, wherein the movable connection can be a hinged connection or a bearing connection.

The longitudinal movement mechanism comprises a longitudinal driving motor 12 arranged on a sliding support 15, the output end of the longitudinal driving motor 12 is in transmission connection with a longitudinal screw 13 through a speed reducer 11 and a coupling 10, the upper end and the lower end of the longitudinal screw 13 are respectively rotatably arranged on the sliding support 15 through an upper bearing assembly 9 and a lower bearing assembly 2, the back of a flanging beam 14 is provided with a hole or a groove which longitudinally penetrates through the flanging beam 14, the longitudinal screw 13 penetrates through the hole or the groove, a longitudinal nut 8 is arranged on the longitudinal screw 13 in a meshing manner, and the longitudinal nut 8 is fixedly connected with the flanging beam 14.

The further improvement is that the longitudinal nut 8 is mounted at the top of the hole or slot, either on the outside of the top, on the inside of the top or on the top. Instead, the longitudinal nut 8 is mounted in a hole or slot. It can ensure that the folding beam 14 has a certain up-and-down movement space, and the aim is to shorten the length of the longitudinal screw rod 13 as much as possible, so that the distance between the upper bearing assembly 9 and the lower bearing assembly 2 is shortened, and the bearing strength is improved.

For further strengthening the support, the folding edge beam 14 is connected with the sliding support 15 through the longitudinal guide rail 4 and the longitudinal slide block 3, and the longitudinal slide block 3 is arranged in the longitudinal guide rail 4 in a matching way.

Two cantilevers extend out from the upper end and the lower end of the hemming beam 14 respectively to enable the section of the hemming beam 14 to be C-shaped, the hemming die comprises an upper hemming die 7 and a lower hemming die 5, the upper hemming die 7 and the lower hemming die 5 are arranged on the opposite inner sides of a C-shaped opening of the hemming beam 14 respectively, and the upper hemming die 7 and the lower hemming die 5 are fixed on the corresponding cantilevers through screws.

The crankshaft 17 can be replaced by an eccentric shaft having two axes of revolution, one corresponding to the main journal of the crankshaft 17 and the other to the connecting rod journal of the crankshaft 17, with the crankshaft crank being simply eliminated, essentially a simple variant of the crankshaft, with equivalent action between the two.

When the flanging die works, the flanging die has the freedom of movement in the transverse direction and the longitudinal direction, the flanging beam 14 is driven by the transverse driving motor 20 through the crankshaft 17 and the connecting rod 16 to be quickly translated to the position to be machined, and the workpiece can be subjected to flanging machining through the longitudinal movement mechanism after being fixed by the pressing mechanism 6. Due to the arrangement of the crank shaft 17 and the connecting rod 16 mechanism, the fast forwarding and fast retreating of the flanging beam 14 are realized through the eccentric motion of the connecting rod 16, and the response speed of the machine tool is improved. More importantly, according to the structure, when the folding beam 14 is closer to the workpiece, the connecting rod 16 is closer to the dead point position, so that the moving speed of the folding beam 14 is slower, the collision force between the workpiece and the folding beam 14 can be reduced, and under a normal working condition, the folding beam 14 cannot collide with the workpiece, but in the process of trial run adjustment feeding, the collision force can be reduced by the machine tool through the design of the scheme, and the safety and reliability technical effects are achieved. The upper end and the lower end of the longitudinal screw rod 13 are respectively and rotatably arranged on the sliding support 15 through the upper bearing assembly 9 and the lower bearing assembly 2, so that the two ends of the screw rod are strongly supported and restrained, and the bearing capacity of the screw rod is strong; the back of the flanging beam 14 is provided with a hole or a groove which longitudinally penetrates through the flanging beam 14, and the design of the longitudinal screw rod 13 through the hole or the groove can shorten the distance from the flanging die to the screw rod, reduce the force arm, ensure that the machine tool is not easy to generate unbalance loading, and further improve the use reliability of the device.

Example 2

As shown in fig. 3 to 4, another eccentric link driven two-degree-of-freedom hemming device is different from embodiment 1 in that a cantilever is extended from a side surface of a hemming beam 14 to make the section of the hemming beam 14 in a horizontal T shape, a hemming die is mounted on the cantilever, the hemming die includes an integral hemming die 21 having an upper bending portion 21a and a lower bending portion 21b, and the integral hemming die 21 is mounted on the corresponding cantilever via a screw.

The present invention is not limited to the above embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some replacements and transformations for some technical features without creative labor according to the disclosed technical contents, and these replacements and transformations are all within the protection scope of the present invention.

Claims

1. The utility model provides an eccentric connecting rod driven two degree of freedom hem device, includes the frame, be equipped with the hold-down mechanism that is used for compressing tightly the work piece in the frame, correspond with hold-down mechanism and be equipped with the hem mould that is used for bending the work piece, the hem mould sets up on the hem roof beam, the hem roof beam is connected on sliding support through longitudinal movement mechanism, and sliding support connects through transverse movement mechanism in the frame, its characterized in that: the transverse movement mechanism comprises a transverse guide rail arranged on the rack, a transverse sliding block is arranged in the transverse guide rail in a matched manner, and the transverse sliding block is fixed at the bottom of the sliding support; a transverse driving motor is fixed on the rack, an output shaft of the transverse driving motor is in transmission connection with a crankshaft, a main journal of the crankshaft is rotatably arranged on the rack, a connecting rod journal eccentrically arranged with the main journal is connected with one end of a connecting rod, and the other end of the connecting rod is movably connected to the sliding support.

2. The eccentric link driven two degree of freedom hemming device of claim 1 wherein: the longitudinal movement mechanism comprises a longitudinal driving motor arranged on the sliding support, the output end of the longitudinal driving motor is in transmission connection with a longitudinal screw rod through a speed reducer and a coupler, the upper end and the lower end of the longitudinal screw rod are respectively and rotatably arranged on the sliding support through an upper bearing assembly and a lower bearing assembly, a hole or a groove longitudinally penetrating through the hemming beam is formed in the back of the hemming beam, the longitudinal screw rod penetrates through the hole or the groove, a longitudinal nut is arranged on the longitudinal screw rod in a meshed mode, and the longitudinal nut is fixedly connected with the hemming beam.

3. The eccentric link driven two degree of freedom hemming device of claim 2 wherein: the longitudinal nut is mounted at the top position of the hole or slot.

4. The eccentric link driven two degree of freedom hemming device of claim 2 wherein: the longitudinal nut is mounted in the bore or slot.

5. An eccentric link driven two degree of freedom hemming device according to any one of claims 1 to 4 wherein: the folding edge beam is connected with the sliding support through a longitudinal guide rail and a longitudinal sliding block, and the longitudinal sliding block is arranged in the longitudinal guide rail in a matching mode.

6. An eccentric link driven two degree of freedom hemming device according to any one of claims 1 to 4 wherein: the upper end and the lower end of the flanging beam respectively extend out of the two cantilevers, so that the section of the flanging beam is C-shaped, the flanging die comprises an upper flanging die and a lower flanging die, and the upper flanging die and the lower flanging die are respectively arranged on the opposite inner sides of the C-shaped opening of the flanging beam.

7. An eccentric link driven two degree of freedom hemming device according to any one of claims 1 to 4 wherein: the side face of the flanging beam extends out of a cantilever to enable the section of the flanging beam to be in a horizontal T shape, the flanging die is installed on the cantilever, and the flanging die comprises an integral flanging die with an upper bending portion and a lower bending portion.

8. An eccentric link driven two degree of freedom hemming device according to any one of claims 1 to 4 wherein: the transverse driving motor is connected with the crankshaft through an expansion sleeve.