A heavy-duty bending workpiece unloading device and operation method

Abstract

The present invention discloses a heavy-duty bending workpiece unloading device and an operation method, comprising a frame one located at the rear side of the bending system and a frame two located at the front side of the bending system, the frame one is equipped with a material-dispensing mechanism for positioning the workpiece when it first falls on the frame one, clamping the workpiece when it is bent, and directional rotation of the workpiece after bending, and a transportation mechanism for horizontally transporting the workpiece when it falls on the frame one again, and the frame two is equipped with a material-supporting mechanism for supporting the workpiece when it is bent and unloading, and a positioning block for positioning the front side of the workpiece. The material-dispensing mechanism is used to position the heavy-duty workpiece when it first falls on the frame one, clamp the heavy-duty workpiece when it is bent, and directional rotation of the heavy-duty workpiece after it is bent. The material-dispensing mechanism integrates the functions of precise positioning of the workpiece, stabilization of the workpiece during the bending process, and directional rotation, so that the workpiece falls on the frame one again, and then cooperates with the material-supporting mechanism and the transportation mechanism to effectively solve the technical problems in the prior art.

Description

Technical Field

[0001] The invention belongs to the field of heavy-duty workpiece unloading devices in bending equipment, and in particular relates to a heavy-duty bending workpiece unloading device and an operating method. Background Art

[0002] After bending, traditional workpieces are generally removed from the bending machine by a manipulator. For example, China's patent CN112875241A discloses a plate unloading device and a plate unloading method, wherein the plate unloading device includes a 90-degree turntable mechanism, a unloading conveyor line, a unloading robot, a lifting and transferring mechanism, a material storage station, a plate centering mechanism, a moving stop mechanism, and a control module. The 90-degree turntable mechanism, the unloading conveyor line, the unloading robot, the lifting and transferring mechanism, the material storage station, the plate centering mechanism, and the moving stop mechanism are all electrically connected to the control module. In this technology, through the automated production process, the efficiency of plate production is improved, the manual participation in production is reduced, which is conducive to reducing the quality loss caused by manual operation and reducing labor costs. However, there are some problems with the above scheme, such as the manipulator cannot carry the unloading of heavy workpieces, which generally refers to workpieces above 2T. Secondly, the manipulator needs to occupy most of the space, which reduces the utilization rate of the workshop space and has a complex structure and high cost. Summary of the invention

[0003] In order to solve the above technical problems, the inventors have obtained the technical solution of the present invention through practice and summary. The present invention discloses a heavy-duty bending workpiece unloading device, including a frame one located at the rear side of the bending system and a frame two located at the front side of the bending system. The frame one is equipped with a material-moving mechanism for positioning the workpiece when it first falls on the frame one, clamping the workpiece during bending, and orienting and rotating the workpiece after bending, as well as a transportation mechanism for transversely transporting the workpiece when it falls on the frame one again. The frame two is equipped with a material-supporting mechanism for supporting the workpiece during bending and unloading, and a positioning block for positioning the front side of the workpiece.

[0004] The following improvements are made in the present application scheme. The material dispensing mechanism includes a slide with a conveyor and can move relative to a frame through the conveyor. An electric push rod is rotatably mounted on the slide. An auxiliary guide groove is provided on the slide. A positioning component with a clamping function is rotatably mounted on the end of the electric push rod.

[0005] The following improvements are made in the present application: the positioning assembly includes a connecting seat rotatably mounted on the electric push rod, the connecting seat is provided with a U-shaped notch, and an automatic clamping structure is provided on the inner side of the U-shaped notch.

[0006] The following improvements are made in the present application scheme: the automatic clamping structure includes a groove arranged on the inner side of the connecting seat, guide groove one and guide groove two are arranged on the side of the groove, the same clamping member is movably installed in guide groove one and guide groove two, the back side of the clamping member is connected to the inner wall of the groove through a spring, guide groove one is horizontally arranged, guide groove two includes a guide part arranged parallel to guide groove one and guide part two integrally connected to the guide part, guide part two is an arc-shaped structure and the center of the circle is located at one end of guide groove one close to guide groove two.

[0007] The following improvements are made in the present application: an elastic clip is installed on the side of the clamping member, and an arc-shaped limit groove matched with the elastic clip is provided at the side of the groove corresponding to the position of the elastic clip. When the elastic clip and the arc-shaped limit groove are matched, the clamping member and the workpiece are in a relatively static state.

[0008] The following improvements are made in the present application scheme: the transport mechanism includes a lifting platform installed on the inner side of a frame, the top of the lifting platform is equipped with an inclined rail whose rear height is lower than the front height, a universal roller is provided on the inclined rail, and a conveying unit is installed at the rear end of the inclined rail.

[0009] The following improvements are made in the present application scheme: the lifting platform includes a lifting group 1 and a lifting group 2 arranged on the inner side of a frame 1, the top of the lifting group 1 is slidably matched with the inclined rail, and the top of the lifting group 2 is rotatably connected to the inclined rail.

[0010] The following improvement is made in the solution of the present application: a driving roller is provided on the conveying unit located at the end of the conveying direction, and driven rollers are provided on the other conveying units.

[0011] The following improvements are made in the present application: the material supporting mechanism includes a driving motor mounted on frame two, the output end of the driving motor is connected to a rotating rod rotatably mounted on frame two via a chain drive, and a plurality of material supporting members are fixedly mounted on the rotating rod.

[0012] An operating method of a heavy-duty bending workpiece unloading device, the operating steps are as follows:

[0013] When positioning heavy workpieces:

[0014] The heavy workpiece is hoisted onto the frame one, and the slide moves forward along the frame one under the action of the conveyor, and the rear side of the heavy plate enters into the groove of the connecting seat. When it contacts the clamping part, it will first cause the clamping part to rotate and clamp the heavy workpiece, and then the two move together relative to the connecting seat to the rear side, so that the clamping part and the connecting seat are in a relatively static state. At this time, the elastic clip and the arc-shaped limit groove are adapted until the heavy workpiece is moved to the front side and fits on the positioning block;

[0015] When bending heavy workpieces:

[0016] The driving motor drives the rotating rod to rotate the material support piece to a certain angle, which is adapted to the front side of the heavy workpiece during the bending process. The electric push rod on the other side will automatically start to move the connection seat to the position adapted to the heavy workpiece on this side. During this process, the clamping piece will always clamp the back side of the heavy workpiece.

[0017] When unloading heavy workpieces:

[0018] The driving motor continues to work in this direction, and the electric push rod works in the opposite direction, driving the connecting seat to flip forward. The supporting piece and the connecting seat are used in combination to flip the bent heavy workpiece onto frame one. Then, lifting group one and lifting group two on the lifting platform are started at the same time, driving the inclined rail upward. Lifting group two first reaches the maximum stroke, which is slightly higher than the height of frame one. Lifting group one continues to work to the maximum stroke. At this time, the inclined rail is in a state of high front and low back. The heavy workpiece will move to the rear side, causing the rear side of the heavy workpiece to be in close contact with the driving roller and the driven roller. The driving roller starts to drive the heavy workpiece away from frame one, completing the unloading action of the workpiece.

[0019] Compared with the prior art, the present invention can achieve the following technical effects:

[0020] 1. Compared with the prior art, the technical solution of the present invention adopts a material shifting mechanism which can position the heavy workpiece when it first falls on the frame, clamp the heavy workpiece when it is bent, and directional rotate the heavy workpiece after bending. The material shifting mechanism integrates the functions of precise positioning of the workpiece, stabilization of the workpiece during the bending process, and directional rotation, so that the workpiece falls on the frame again, effectively solving the technical problems in the prior art.

[0021] 2. Compared with the prior art, the technical solution of the present invention adopts a new type of inclined transport mechanism with an inclined plate that is high in the front and low in the back, which is conducive to automatic position correction of heavy workpieces. Finally, the workpieces are unloaded through driving rollers and driven rollers, which is simple to operate and stable and reliable.

[0022] 3. Compared with the prior art, the technical solution of the present invention adopts a material supporting mechanism on the front side, which cooperates with a material shifting mechanism with clamping, positioning and directional flipping functions on the rear side to automatically and steadily drop the bent workpiece back onto the frame 1, and the entire unloading process is safe and stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the overall structure of the frame 1 of the present invention;

[0026] Figure 3 It is a schematic diagram of the overall structure of the frame 2 of the present invention;

[0027] Figure 4 It is a partial enlarged view of the material-pickup mechanism on the frame 1 of the present invention;

[0028] Figure 5 It is a side view of the material-pickup mechanism of the present invention in a natural state and a workpiece positioning state;

[0029] Figure 6 It is a side view of the material-shifting mechanism of the present invention when the workpiece is bent and flipped;

[0030] Figure 7 It is a schematic diagram of the structure of the docking seat of the present invention in a natural state;

[0031] Figure 8 It is a schematic diagram of the structure of the connection seat of the present invention when the connection seat is clamping a workpiece;

[0032] Fig. 9 It is a schematic diagram of the structure inside the groove on the connecting seat of the present invention;

[0033] Fig.10 It is a structural schematic diagram of the clamping member on the connecting seat of the present invention;

[0034] Fig.11 It is a structural schematic diagram of the transportation mechanism of the present invention under normal working conditions;

[0035] Fig.12 It is a schematic diagram of the structure of the transport mechanism of the present invention under the conveying condition. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0037] The application principle of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0038] Example

[0039] like Figure 1 to Figure 2As shown, a heavy-duty bending workpiece unloading device includes a frame 10 located at the rear side of the bending system and a frame 20 located at the front side of the bending system. The frame 10 and the frame 20 are connected by a bridge bracket. The frame 10 is equipped with a material dispensing mechanism 40 for positioning the workpiece when it first falls on the frame 10, clamping the workpiece when it is bent, and orienting and rotating the workpiece after bending. Figures 4 to 6 As shown, the material-dispensing mechanism 40 includes a slide 41 with a conveyor and can move relative to the frame 10 through the conveyor. The conveyor can select a screw nut transmission mechanism. An electric push rod 42 is rotatably installed on the slide 41. An auxiliary guide groove 43 is provided on the slide 41. The tail of the electric push rod 42 is movably arranged inside the auxiliary guide groove 43. A positioning component with a clamping function is rotatably installed on the end of the electric push rod 42. The positioning component includes a connecting seat 44 rotatably installed on the electric push rod 42. The connecting seat 44 falls on the slide 41 in a horizontal state in a natural state. A U-shaped notch is provided on the connecting seat 44, and an automatic clamping structure is provided on the inner side of the U-shaped notch, such as Figures 7 to 9 As shown, the automatic clamping structure includes a groove 441 arranged on the inner side of the connecting seat 44, and a guide groove 1 442 and a guide groove 2 443 are arranged on the side of the groove 441. The same clamping member 444 is movably installed in the guide groove 1 442 and the guide groove 2 443. Two rotating shafts are arranged on the clamping member 444, and the rotating shafts are located in the corresponding guide groove 1 442 or the guide groove 2 443. The back side of the clamping member 444 is connected to the inner wall of the groove 441 through a spring. In the natural state, the clamping member 444 is in a natural state under the action of the spring, that is, the side of the clamping member 444 close to the U-shaped notch is hidden in the groove 441, and the guide groove 1 442 is horizontally arranged, and the guide groove 2 443 includes a guiding part arranged parallel to the guide groove 1 442 and a guiding part 2 integrally connected to the guiding part, and the guiding part 2 is arranged in an arc structure and the center of the circle is located at one end of the guide groove 1 442 close to the guide groove 2 443.

[0040] like Fig.10 As shown, an elastic clip 445 is installed on the side of the clamping member 444, and an arc-shaped limiting groove 446 matched with the elastic clip 445 is provided on the side of the groove 441 corresponding to the position of the elastic clip 445. When the elastic clip 445 and the arc-shaped limiting groove 446 are matched, the clamping member 444 and the workpiece are in a relatively static state.

[0041] The slide 41 moves forward under the action of the conveyor until the heavy workpiece enters the U-shaped groove of the connecting seat 44, first contacts the clamping member 444 and drives it to rotate, so that the heavy workpiece is clamped, and then moves with the clamping member 444 and the heavy workpiece. When the elastic clip 445 and the arc-shaped limit groove 446 are adapted, the clamping member 444 and the workpiece are in a relatively static state and move forward together under the action of the conveyor.

[0042] A transport mechanism 50 is also provided for laterally transporting the workpiece when it falls to the frame 10 again. Figure 1 to Figure 2 as well as Fig.11 and Fig.12 As shown, the transport mechanism 50 includes a lifting platform installed on the inner side of the frame 10, and the lifting platform includes a lifting group 1 52 and a lifting group 2 53 arranged on the inner side of the frame 10, the top of the lifting group 1 52 is slidably matched with the inclined rail 51, and the top of the lifting group 2 53 is rotatably connected with the inclined rail 51. The stroke of lifting group 1 52 is slightly larger than that of lifting group 2 53, and the stroke of lifting group 2 53 is slightly larger than that of frame 10. An inclined rail 51 with a rear height lower than the front height is installed on the top of the lifting platform. The inclined rail 51 is set high in the front and low in the back through the stroke difference between lifting group 1 52 and lifting group 2 53. A universal roller is arranged on the inclined rail 51, and the universal roller is utilized to realize the free sliding of heavy workpieces. A conveying unit is installed at the rear end of the inclined rail 51. A driving roller 54 is arranged on the conveying unit located at the end of the conveying direction, and driven rollers 55 are arranged on the remaining conveying units. When the heavy workpiece contacts the driving roller 54 and the driven roller 55, the position of the device is automatically corrected, and then the heavy workpiece is unloaded from frame 10 under the action of the driving wheel 54.

[0043] When the heavy workpiece completes the bending action, the material-shifting mechanism on the rear side drives the workpiece to flip forward until it falls steadily onto the frame 10, and then the lifting group 1 52 and the lifting group 2 53 of the lifting platform will start. When the stroke height exceeds the height of the frame 10, the heavy workpiece on the frame 10 will be lifted up. When the stroke of the lifting group 2 53 is reached, the lifting group 1 52 will continue to work, so that the inclined rail 51 reaches a state of high front and low back, and the heavy workpiece thereon will automatically slide down and be corrected to contact with the driving roller 54 and the driven roller 55, and the workpiece will be removed from the frame 10 under the action of the driving roller 54.

[0044] like Figure 3 As shown, a material supporting mechanism 60 is installed on the frame 20 to support the workpiece during bending and unloading. The material supporting mechanism 60 includes a driving motor 61 installed on the frame 20. The output end of the driving motor 61 is connected to a rotating rod 62 rotatably installed on the frame 20 through a chain transmission. A plurality of material supporting members 63 are fixedly installed on the rotating rod 62. The driving motor 61 drives the rotating rod 62 and the material supporting members 63 to carry out material supporting. When a heavy workpiece is bent, the corresponding angle modification will be made in time with the change of the bending angle. When the bending is completed, the heavy workpiece is stably dropped onto the frame 10 by cooperating with the material dispensing mechanism 40.

[0045] like Figure 3As shown, a positioning block 30 for positioning the front side of the workpiece is also provided on the frame 20. The positioning block 30 can also adopt a movable structure or a fixed structure. The movable structure is a new structure that combines a conveyor and a positioning block 30 that are the same as the bottom of the slide 41, which can solve the problems of the prior art.

[0046] An operating method of a heavy-duty bending workpiece unloading device, the operating steps are as follows:

[0047] When positioning heavy workpieces:

[0048] The heavy workpiece is hoisted onto the frame 10, and the slide 41 moves forward along the frame 10 under the action of the conveyor, and the rear side of the heavy plate enters into the groove 441 of the connecting seat 44. When it contacts the clamping member 444, it will first cause the clamping member 444 to rotate and clamp the heavy workpiece, and then the two move together relative to the connecting seat 44 to the rear side, so that the clamping member 444 and the connecting seat 44 are in a relatively static state, at this time, the elastic clip 445 and the arc-shaped limit groove 446 are adapted until the heavy workpiece is moved to the front side and fits on the positioning block 30;

[0049] When bending heavy workpieces:

[0050] The driving motor 61 drives the rotating rod 62 to rotate the material supporting member 63 to a certain angle, which is adapted to the front side of the heavy workpiece during the bending process. The electric push rod 42 on the other side will automatically start to move the connecting seat 44 to a position adapted to the heavy workpiece on this side. During this process, the clamping member 444 will always clamp the back side of the heavy workpiece.

[0051] When unloading heavy workpieces:

[0052] The driving motor 61 continues to work in this direction, and the electric push rod 42 works in the opposite direction, driving the connecting seat 44 to flip to the front side, and the supporting piece 63 and the connecting seat 44 are used in combination to flip the bent heavy workpiece onto the frame 10, and then the lifting group 1 52 and the lifting group 2 53 on the lifting platform are started at the same time, driving the inclined rail 51 upward, and the lifting group 2 53 first reaches the maximum stroke, which is slightly higher than the height of the frame 10, and the lifting group 1 52 continues to work to the maximum stroke. At this time, the inclined rail 51 is in a state of high front and low back, and the heavy workpiece will move to the rear side, causing the rear side of the heavy workpiece to be in close contact with the driving roller 54 and the driven roller 55. The driving roller 54 starts to drive the heavy workpiece to move away from the frame 10, completing the workpiece unloading action.

[0053] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0054] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A heavy-duty bending workpiece unloading device, characterized in that: It includes a frame 1 located at the rear side of the bending system and a frame 2 located at the front side of the bending system. The frame 1 is equipped with a material-dispensing mechanism for positioning the workpiece when it first falls on the frame 1, clamping the workpiece when it is bent, and orienting and rotating the workpiece after bending, as well as a transportation mechanism for horizontally transporting the workpiece when it falls on the frame 1 again. The frame 2 is equipped with a material-supporting mechanism for supporting the workpiece when it is bent and unloaded, and a positioning block for positioning the front side of the workpiece; The material-dispensing mechanism comprises a slide seat with a conveyor and capable of relative movement with a frame through the conveyor, an electric push rod is rotatably mounted on the slide seat, an auxiliary guide groove is provided on the slide seat, and a positioning assembly with a clamping function is rotatably mounted on the end of the electric push rod; The positioning assembly comprises a connection seat rotatably mounted on the electric push rod, the connection seat is provided with a U-shaped notch, and an automatic clamping structure is provided inside the U-shaped notch; The automatic clamping structure comprises a groove arranged on the inner side of the connecting seat, a guide groove 1 and a guide groove 2 are arranged on the side of the groove, a same clamping member is movably installed in the guide groove 1 and the guide groove 2, the back side of the clamping member is connected to the inner wall of the groove through a spring, the guide groove 1 is arranged horizontally, the guide groove 2 comprises a guide part arranged parallel to the guide groove 1 and a guide part 2 connected integrally with the guide part, the guide part 2 is arranged in an arc structure and the center of the circle is located at one end of the guide groove 1 close to the guide groove 2; An elastic clip is installed on the side of the clamping piece, and an arc-shaped limiting groove adapted to the elastic clip is arranged at the side of the groove corresponding to the position of the elastic clip. When the elastic clip and the arc-shaped limiting groove are adapted, the clamping piece and the workpiece are in a relatively static state; The transport mechanism comprises a lifting platform installed on the inner side of the frame, an inclined rail with a rear side height lower than the front side height is installed on the top of the lifting platform, a universal rolling ball is arranged on the inclined rail, and a conveying unit is installed at the rear end of the inclined rail; The lifting platform comprises a lifting group 1 and a lifting group 2 which are arranged inside a frame 1. The top of the lifting group 1 is slidably matched with the inclined rail, and the top of the lifting group 2 is rotatably connected with the inclined rail.

2. A heavy-duty bending workpiece unloading device according to claim 1, characterized in that: The conveying unit located at the end of the conveying direction is provided with a driving roller, and the other conveying units are provided with driven rollers.

3. A heavy-duty bending workpiece unloading device according to claim 2, characterized in that: The material supporting mechanism comprises a driving motor mounted on the second frame, the output end of the driving motor is connected to a rotating rod rotatably mounted on the second frame via a chain transmission, and a plurality of material supporting members are fixedly mounted on the rotating rod.

4. An operating method of a heavy-duty bending workpiece unloading device, comprising the heavy-duty bending workpiece unloading device according to claim 3, characterized in that: The steps are as follows: When positioning heavy workpieces: The heavy workpiece is hoisted onto the frame one, and the slide moves forward along the frame one under the action of the conveyor, and the rear side of the heavy plate enters into the groove of the connecting seat. When it contacts the clamping part, it will first cause the clamping part to rotate and clamp the heavy workpiece, and then the two move together relative to the connecting seat to the rear side, so that the clamping part and the connecting seat are in a relatively static state. At this time, the elastic clip and the arc-shaped limit groove are adapted until the heavy workpiece is moved to the front side and fits on the positioning block; When bending heavy workpieces: The driving motor drives the rotating rod to rotate the material support piece to a certain angle, which is adapted to the front side of the heavy workpiece during the bending process. The electric push rod on the other side will automatically start to move the connection seat to the position adapted to the heavy workpiece on this side. During this process, the clamping piece will always clamp the back side of the heavy workpiece. When unloading heavy workpieces: The driving motor continues to work in this direction, and the electric push rod works in the opposite direction, driving the connecting seat to flip forward. The supporting piece and the connecting seat are used in combination to flip the bent heavy workpiece onto frame one. Then, lifting group one and lifting group two on the lifting platform are started at the same time, driving the inclined rail upward. Lifting group two first reaches the maximum stroke, which is slightly higher than the height of frame one. Lifting group one continues to work to the maximum stroke. At this time, the inclined rail is in a state of high front and low back. The heavy workpiece will move to the rear side, causing the rear side of the heavy workpiece to be in close contact with the driving roller and the driven roller. The driving roller starts to drive the heavy workpiece away from frame one, completing the unloading action of the workpiece.

Images