Universal bending punch press with automatic feeding and discharging mechanism and machining method

Abstract

The invention discloses a universal bending punch press with an automatic feeding and discharging mechanism. The universal bending punch press comprises a machining base table, a station switching mechanism, feeding assemblies, stamping dies and receiving assemblies, wherein the feeding assemblies, the stamping dies and the receiving assemblies correspond to stations arranged on the machining base table. The station switching mechanism is used for grabbing the machined workpieces to sequentially pass through all the stations. The feeding transfer assembly and the discharging transfer assembly in the station switching mechanism are both arranged on the linear sliding table module, suction and transfer of machined workpieces and finished workpieces can be completed at the same time under driving of the linear sliding table module, and the machining efficiency of the machined workpieces is greatly improved. And meanwhile, the feeding assembly and the receiving assembly can lift the machined workpieces and transfer and temporary storage of the finished workpieces correspondingly, and therefore the time spent on sucking and placing the machined workpieces and the finished workpieces by the feeding transfer assembly and the discharging transfer assembly is shortened.

Description

Technical Field

[0001] The invention belongs to the technical field of automation equipment, and in particular relates to a universal bending punching machine with an automatic loading and unloading mechanism and a processing method thereof. Background Art

[0002] Stamping is a metal processing method that uses molds and stamping equipment to apply pressure to sheet metal to cause plastic deformation or separation of the sheet metal, thereby obtaining parts (stampings) with certain shapes, sizes and performances.

[0003] In the prior art, when a stamping process is performed on a stamping product with a specific structure, the following negative conditions often occur with respect to the local bending of the stamping product.

[0004] Situation 1: The stamped products are placed in the stamping die manually. After the stamping process of the punch press, the materials are unloaded by the cylinder pusher. In this way, the overall production capacity is low, about 400-500 pieces / hour, and the operator is prone to fatigue.

[0005] Situation 2: Figure 1 As shown, when the front and back outer contours of the workpiece 100 to be processed by stamping are similar, and only the inner contour is slightly different (the inner contour is a special-shaped hole), there will be requirements for the front and back sides of the stamping product. Because the shape difference of the inner contour is extremely small when the front or back side is facing up, it is easy to confuse by visual inspection, which makes it easy to put it upside down during manual loading, which in turn leads to reverse bending defects and causes customer complaints.

[0006] Condition 3: After the bending process, customers often report that the product has appearance defects such as bending cracks and obvious indentations at the bending part.

[0007] Through on-site reproduction and analysis, we found that in the first case, the main reason for the low production capacity is that the manual loading must first sort the front and back sides, then manually put them into the mold, and then press the start button with both hands, which makes the overall rhythm slow. Secondly, the unloading method is that after the cylinder pushes the unloading, the products are scattered and filled in a turnover box, and then they need to be manually changed and the parts are sorted, which will divert the operator's operating time.

[0008] In the second case, before the product is placed in the mold, the loading station does not have a front and back side sorting and anti-error tooling, and the positioning design inside the mold does not have a front and back side placement anti-error design, so the front and back sides can only be sorted by visual inspection.

[0009] The third case, such as Figure 2As shown in the figure, because the product is positioned in the bending mold by its outer contour in the X and Y axis directions, the first positioning block 200, the second positioning block 300 and the third positioning block 400 are used for positioning respectively. And because the product is discharged in the X direction, the cylinder push method is used. Therefore, it is impossible to achieve full positioning in the XY plane, and there is a design defect. When the operator places it slightly offset, it will cause bending quality defects. Summary of the invention

[0010] In order to make up for the deficiencies of the prior art, the present invention provides a universal bending punch machine with an automatic loading and unloading mechanism and a processing method to solve the technical problems of low processing efficiency and defects that are easily caused during the processing.

[0011] To achieve the above purpose, the specific technical solutions of the present invention are as follows: On the one hand, a universal bending punch machine with an automatic loading and unloading mechanism is provided, including a processing base, a station switching mechanism, and a feeding assembly, a stamping die and a receiving assembly corresponding to each station of the processing base.

[0012] The station switching mechanism is used to grab the workpiece to be processed and pass through each station in sequence.

[0013] The feeding assembly includes a loading platform, a loading carrier and a lifting mechanism. The loading carrier is used to load the corresponding workpiece to be processed. The lifting mechanism is used to drive the loaded workpiece to be processed to be gradually lifted.

[0014] The material receiving component is used for receiving the finished workpiece.

[0015] Furthermore, the loading carrier comprises an integrally formed fixed base and a limiting column. The outer facade of the limiting column is a polygonal structure matching the inner circle of the workpiece being processed. The outer facade of the limiting column is provided with a clearance notch matching the bending portion in the workpiece being processed.

[0016] Furthermore, the lifting mechanism comprises a lifting bracket, a lifting driving element and a lifting adjustment component. The lifting adjustment component is slidably connected to the lifting bracket and can be raised or lowered under the drive of the lifting driving element.

[0017] The lifting adjustment assembly includes a first slider and a lifting member. The first slider is slidably connected to the lifting bracket. The lifting member is fixed to the outer end of the first slider and can form an outer enclosure for the corresponding loading carrier.

[0018] Furthermore, a detection bracket is fixed on the feeding table. A partition assembly and a feeding detection assembly are installed on the detection bracket. The partition assembly includes a partition and an adjustment cylinder. The partitions in the two partition assemblies are arranged relative to each other and can move closer to or farther from the corresponding limit column under the drive of the corresponding adjustment cylinders.

[0019] Furthermore, the feeding detection assembly includes a displacement sensor and a limit sensor arranged in sequence from top to bottom. The displacement sensor is used to detect the distance of the first workpiece to be processed located at the top of the limit column relative to the top surface of the limit column. The limit sensor is used to detect the number of workpieces to be processed when the feeding transfer assembly grabs the workpieces to be processed.

[0020] Furthermore, the material receiving assembly includes a support base, a material receiving rotary table, a material receiving rod and a rotary drive motor. The material receiving rotary table is rotatably connected to the support base and can be rotated under the drive of the rotary drive motor. The material receiving rod is fixed on the material receiving rotary table. The receiving assembly is used to receive the finished workpiece transferred by the station switching mechanism and put it on the material receiving rod.

[0021] Furthermore, the station switching mechanism includes a linear slide module, and a loading transfer assembly and a unloading transfer assembly arranged on the linear slide module. The loading transfer assembly can transfer the processed workpiece output by the feeding module to the stamping die under the drive of the linear slide module. The unloading transfer assembly can transfer the processed workpiece on the stamping die to the receiving assembly under the drive of the linear slide module.

[0022] Furthermore, the stamping die is provided with positioning pins, limit blocks and multiple point detection sensors. There are three limit blocks in total, which are used to limit the circumferential edges of the workpiece being processed; the positioning pins are used to limit the inner concave parts on the opposite sides of the arc edge. The point detection sensors are used to detect the positions of various parts of the workpiece being processed on the stamping die.

[0023] Furthermore, the loading and unloading transfer assembly and the unloading and unloading transfer assembly each include a fixed bracket and a manipulator assembly fixed on the fixed bracket. The fixed bracket is slidably matched with the linear slide module. The manipulator assembly includes a supporting cantilever and a suction cup bracket arranged at the end of the supporting cantilever. The suction cup bracket is provided with a plurality of vacuum nozzles.

[0024] On the other hand, a processing method of a universal bending punch press with an automatic loading and unloading mechanism is provided, and the specific steps are as follows: Step 1: Loading: The staff loads the workpiece onto the corresponding loading carrier according to the required orientation of the workpiece to be processed, and places the loaded loading carrier on the loading table.

[0025] Step 2: feeding, the lifting mechanism drives the loaded workpiece to be processed to be gradually lifted until the first workpiece to be processed at the top is flush with the top surface of the loading carrier.

[0026] Step three, material loading and transfer. Under the drive of the linear slide module, the material loading and transfer component absorbs the processed workpiece output by the feeding module and transfers it to the stamping die.

[0027] Step 4: stamping process. The point detection sensors on the stamping die detect the positions of various parts of the workpiece being processed. When no position error is found between the workpiece being processed and the stamping die, the stamping process is performed to bend the bending part of the workpiece being processed to form a finished workpiece, and then proceed to step 5. Otherwise, the point detection sensor will feedback the detection information and stop the machine to remind you.

[0028] Step five, material unloading and transfer. Driven by the linear slide module, the material unloading and transfer component will suck the finished workpiece on the stamping die and transfer it to the feeding component.

[0029] Step six, finished product collection, the staff will collect the finished workpieces on the feeding assembly and move them away.

[0030] Compared with the prior art, the present invention has the following advantages: 1. The present invention realizes the automated stamping processing of workpieces with different front and back structures by arranging a station switching mechanism, a feeding assembly, a stamping die and a receiving assembly.

[0031] 2. The present invention effectively avoids bending reverse defects caused by incorrect placement of the front and back sides of the workpiece being processed by providing two loading carriers corresponding to the inner circle shapes of the front and back sides of the workpiece being processed.

[0032] 3. The present invention arranges a feeding component and a receiving component to cooperate with the station switching mechanism to absorb and transport the workpiece being processed. Among them, the loading and transporting component and the unloading and transporting component in the station switching mechanism are both arranged on the linear slide module, and can simultaneously complete the absorption and transportation of the workpiece being processed and the finished workpiece under the drive of the linear slide module, which greatly improves the processing efficiency of the workpiece being processed. At the same time, the feeding component and the receiving component can respectively complete the lifting of the workpiece being processed and the transportation and temporary storage of the finished workpiece, thereby reducing the time spent by the loading and transporting component and the unloading and transporting component in absorbing and placing the workpiece being processed and the finished workpiece.

[0033] 4. The present invention sets a positioning pin and a plurality of limit blocks on the stamping die to limit the position of the workpiece being processed. At the same time, multiple point detection sensors are set to detect the positions of various parts of the workpiece being processed, further avoiding defects in the finished workpiece due to placement deviation of the workpiece being processed. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the structure of the workpiece to be processed in the present invention; Figure 2 It is a structural schematic diagram of a stamping die in the prior art; Figure 3It is a schematic diagram of the overall structure of the present invention; Figure 4 Schematic diagram of the structure of the feeding assembly in the present invention ( Figure 3 Partial enlarged view of part A in the middle); Figure 5 It is a schematic diagram of the relative positions of the lifting mechanism and the feeding detection assembly in the present invention; Figure 6 It is a structural schematic diagram of the station switching mechanism in the present invention; Figure 7 It is a structural schematic diagram of the robot assembly in the present invention; Figure 8 It is a structural schematic diagram of the stamping die in the present invention; Fig. 9 It is a schematic diagram of the relative positions of the receiving assembly and the receiving rod in the present invention; Fig.10 Schematic diagram of the structure of the material receiving component in the present invention ( Figure 3 (partial enlarged view of part B in the figure).

[0035] Figure numerals: 100, workpiece to be processed; 200, first positioning block; 300, second positioning block; 400, third positioning block; 1, processing base; 2, linear slide module; 2-1, X-axis slide assembly; 2-2, Z-axis slide assembly; 3, loading and transport assembly; 4, unloading and transport assembly; 5, feeding assembly; 5-1, loading platform; 5-2, limiting column; 5-2-1, giving way slot; 5-3, lifting mechanism; 5-3-1, lifting bracket; 5-3-2, lifting member; 6 , material receiving assembly; 6-1, support base; 6-2, material receiving rotary table; 6-3, material receiving rod; 6-4, receiving assembly; 6-4-1, lifting cylinder; 6-4-2, receiving bracket; 7, manipulator assembly; 7-1, supporting cantilever; 7-2, suction cup bracket; 7-3, vacuum nozzle; 8, stamping die; 9, positioning pin; 10, limit block; 11, point detection sensor; 12, feeding detection assembly; 13, partition assembly; 13-1, partition; 13-2, adjusting cylinder. DETAILED DESCRIPTION

[0036] In the description of the present invention, it is necessary to understand that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "center", "end", "length", "outer end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] The present invention will be further described below in conjunction with the accompanying drawings.

[0038] like Figure 3 As shown, a universal bending punch machine with an automatic loading and unloading mechanism and a processing method include a processing base 1, a station switching mechanism, a feeding assembly 5 and a receiving assembly 6. Among them, the processing base 1 is sequentially provided with a loading station, a processing station and a unloading station. A stamping die 8 for stamping operation is fixed on the processing station, which is used to perform stamping processing on the workpiece to be processed. The feeding assembly 5 is arranged on the loading station, and is used to input the workpiece to be processed one by one. The receiving assembly 6 is arranged on the unloading station, and is used to receive the finished workpiece.

[0039] like Figure 3 and 6 As shown, the station switching mechanism includes a loading and transporting assembly 3, a unloading and transporting assembly 4 and a linear slide module 2. The loading and transporting assembly 3 and the unloading and transporting assembly 4 are both arranged on the linear slide module 2 for grabbing the workpiece to be processed. Among them, the loading and transporting assembly 3 can be driven by the linear slide module 2 to switch between the loading station and the processing station. The unloading and transporting assembly 4 can be driven by the linear slide module 2 to switch between the processing station and the unloading station.

[0040] like Figure 4 As shown, the feeding assembly 5 includes a loading platform 5-1, a loading carrier and a lifting mechanism 5-3. The loading carrier can be detachably fixed on the loading platform 5-1. When in use, the staff fixes the loading carrier loaded with the workpieces to be processed on the loading platform 5-1. Driven by the lifting mechanism 5-3, the workpieces to be processed can be lifted up one by one until they are flush with the top surface of the loading carrier, which can effectively prevent the loading and transporting assembly 3 from interfering with or colliding with the loading carrier when grabbing the workpieces to be processed. The workpieces to be processed are transported to the stamping die 8 through the loading and transporting assembly 3 for stamping operations.

[0041] The specific structure is that the loading carrier includes a fixed base located at the bottom and a limit column 5-2 located at the top. Among them, the fixed base can be detachably fixed on the loading platform 5-1. The outer facade of the limit column 5-2 is a polygonal structure that matches the inner circle of the workpiece to be processed. When the workpiece to be processed is turned over to face the reverse side upward, it can be smoothly inserted into the outer periphery of the limit column 5-2, otherwise it cannot be inserted due to size differences.

[0042] Furthermore, the limiting column 5-2 is provided with a clearance groove 5-2-1 that matches the bent portion of the workpiece being processed. When the workpiece being processed is sleeved on the limiting column 5-2, the bent portion of the workpiece being processed is embedded in the clearance groove 5-2-1, so that the position of the workpiece being processed in the circumferential direction is limited, which can effectively prevent the workpiece from rotating and deviating during the lifting process.

[0043] In this embodiment, there are two loading carriers, and the two loading carriers are arranged on the loading platform at an interval.

[0044] Furthermore, a loading station corresponding to the fixed bases in the two loading carriers is provided on the loading platform 5-1. A plurality of pneumatic clamps are provided on the loading station. The pneumatic clamps can complete the clamping of the corresponding fixed base under the drive of the cylinder.

[0045] As shown in 4 and 5, there are two lifting mechanisms 5-3, corresponding to two loading carriers respectively. The lifting mechanism 5-3 includes a lifting bracket 5-3-1, a lifting drive element and a lifting adjustment component. Among them, the lifting bracket 5-3-1 is fixed on the loading platform 5-1. The lifting adjustment component is slidably connected to the lifting bracket 5-3-1, and can complete the lifting operation under the drive of the lifting drive element. When the lifting adjustment component is lifted, the processed parts installed on the loading carrier are driven to be lifted synchronously, thereby facilitating the grabbing of the loading transfer component 3.

[0046] like Figure 3 As shown, the lifting adjustment assembly includes a first slider and a lifting member 5-3-2. The first slider is slidably connected to the lifting bracket 5-3-1. The lifting member 5-3-2 is fixed to the outer end of the first slider. The lifting member 5-3-2 includes two symmetrically arranged arc-shaped claws. A clearance area that cooperates with the loading carrier is formed between the two arc-shaped claws. The loading carrier passes through the clearance area and is fixed to the loading platform. The workpieces to be processed carried on the loading carrier are stacked on the arc-shaped claws. When the arc-shaped claws are lifted upward under the drive of the lifting drive element, the stacked workpieces to be processed will be driven to be lifted synchronously.

[0047] In this embodiment, the lifting drive element adopts a servo motor. A third screw is fixed on the output shaft of the lifting drive element. The third screw is threadedly matched with the first slider, and when the third screw rotates, it can drive the first slider to complete the lifting operation, thereby driving the lifting member 5-3-2 to lift or lower.

[0048] Further, such as Figure 5 As shown, a detection bracket is fixed on the loading platform 5-1. A separation component 13 and a feeding detection component 12 are installed on the detection bracket. Among them, the separation component 13 is used to prevent the two adjacent workpieces from sticking together. The feeding detection component 12 is used to detect the number of workpieces adsorbed by the loading and transporting component 3, and further prevent the two adjacent workpieces from being adsorbed at the same time due to adhesion, which will interfere with the processing.

[0049] Specifically, there are two partition assemblies 13, which are symmetrically arranged at both ends of the detection bracket, corresponding to the two loading carriers. The partition assembly 13 includes a partition 13-1 and an adjusting cylinder 13-2. The partitions 13-1 in the two partition assemblies 13 are arranged relatively to each other, and can move closer to or farther from the corresponding limiting column 5-2 side under the drive of the respective corresponding adjusting cylinders 13-2. When the partition 13-1 moves toward the side of the limiting column 5-2 under the drive of the adjusting cylinder 13-2, it will gradually fit with the facade of the workpiece being processed mounted on the loading carrier. The static friction force formed between the partition 13-1 and the corresponding workpiece being processed can effectively prevent adhesion between two adjacent workpieces being processed. After completing the lifting operation of all the workpieces being processed on the limiting column 5-2, the adjusting cylinder 13-2 will drive the partition 13-1 to reset.

[0050] In this embodiment, the separator 13 - 1 is L-shaped, and an arc-shaped chamfer is provided at the outer end.

[0051] The feeding detection component 12 includes a displacement sensor and a limit sensor arranged in sequence from top to bottom. Among them, the displacement sensor adopts an infrared sensor, which is used to detect the distance of the workpiece to be processed located at the top relative to the top surface of the limit column 5-2 under the drive of the lifting component. The limit sensor adopts an optical fiber sensor, which is used to detect the number of workpieces to be processed when the loading and transfer component 3 grabs the workpieces to be processed. When the number of workpieces to be processed grabbed by the loading and transfer component 3 is one, the optical fiber sensor does not detect the workpiece, and the loading and transfer component 3 successfully grabs and transfers. When the number of workpieces to be processed grabbed by the loading and transfer component 3 is greater than one, the optical fiber sensor detects the workpiece and sends an error signal.

[0052] like Figure 6 As shown, the linear slide module 2 includes an X-axis slide assembly 2-1 and a Z-axis slide assembly 2-2. The X-axis slide assembly 2-1 is arranged on the moving end of the Z-axis slide assembly 2-2, and can be raised or lowered under the drive of the Z-axis slide assembly 2-2. The loading and transporting assembly 3 and the unloading and transporting assembly 4 are slidably connected to the X-axis slide assembly 2-1, and can complete the switching between the loading station, the processing station and the unloading station under the cooperation of the X-axis slide assembly 2-1 and the Z-axis slide assembly 2-2, and realize the steps of lifting and lowering, and sucking the processed workpiece.

[0053] The specific structure is that the X-axis slide assembly 2-1 includes an X-axis slide base and an X-axis servo motor. The loading transfer assembly 3 and the unloading transfer assembly 4 are slidably connected to the X-axis slide base. The X-axis servo motor is arranged at the end of the X-axis slide base, and a first screw is arranged on the output shaft. The first screw is threadedly connected to the loading transfer assembly 3 and the unloading transfer assembly 4. When the first screw rotates, it drives the loading transfer assembly 3 and the unloading transfer assembly 4 to move.

[0054] The Z-axis slide assembly 2-2 includes a mounting bracket, a second slider, a Z-axis slide base and a Z-axis servo motor. The Z-axis slide base is fixed on the processing base. The second slider is slidably connected to the Z-axis slide base. The Z-axis servo motor is fixed to the end of the Z-axis slide base, and a second screw is fixed on the output shaft. The second screw is threadedly connected to the second slider. The second slider is raised or lowered by rotating the second screw. The X-axis slide base is fixed to the second slider through the mounting bracket. When the second slider moves, it will drive the X-axis slide base to move synchronously.

[0055] Furthermore, there are two Z-direction slide assemblies 2-2, which are respectively arranged on both sides of the processing base 1. A commutator is arranged on the top of the Z-direction slide base in the Z-direction slide assembly 2-2. One end of the two commutators is connected by a transmission shaft, and the other end is connected to the second screw in the corresponding Z-direction slide assembly 2-2, so that when the Z-direction servo motor in one of the Z-direction slide assemblies 2-2 is working, it can simultaneously drive the mounting brackets in the two Z-direction slide assemblies 2-2 to perform lifting and lowering movements, thereby stably driving the X-direction slide base to complete the lifting and lowering movements.

[0056] like Figure 3 and 6 As shown, the loading transfer assembly 3 and the unloading transfer assembly 4 are spaced apart on the X-axis slide base, and the spacing distance is equal to the distance between the feeding assembly 5 and the stamping die 8 or the distance between the receiving assembly 6 and the stamping die 8.

[0057] The loading and unloading transport assembly 3 and the unloading and unloading transport assembly 4 have the same structure, and both include a fixed bracket and two manipulator assemblies 7 fixed on the fixed bracket. The fixed bracket is slidably matched with the linear slide module 2, and can move in the horizontal direction under the drive of the linear slide module 2, thereby driving the two manipulator assemblies 7 to move to one side of the workpiece to be processed, so as to grasp the workpiece to be processed.

[0058] like Figure 7 As shown, the manipulator assembly 7 includes a supporting arm 7-1 and a suction cup bracket 7-2 arranged at the end of the supporting arm 7-1. A plurality of vacuum suction nozzles 7-3 are arranged on the suction cup bracket 7-2. The vacuum suction nozzles 7-3 are evenly distributed along the circumference of the axis of the suction cup bracket 7-2, matching the workpiece to be processed, and can evenly suck various parts of the workpiece to be processed.

[0059] Furthermore, a product adsorption sensor is provided on the suction cup bracket 7-2. The product adsorption sensor adopts an optical fiber sensor, and its detection end is oriented in the same direction as the vacuum suction nozzle 7-3, and is used to detect the suction state of the vacuum suction nozzle 7-3 on the workpiece being processed. When the vacuum suction nozzle 7-3 fails to absorb the workpiece being processed, it is detected by the product adsorption sensor and an alarm is sounded. Otherwise, the subsequent stamping or unloading steps are carried out.

[0060] like Figure 8 As shown, the stamping die 8 is fixed with positioning pins 9 and limiting blocks 10 for limiting the workpiece being processed. There are three limiting blocks 10, which are used to limit the circumferential edges of the workpiece being processed; the positioning pins 9 are used to limit the inner concave parts on the opposite sides of the arc edge. When the workpiece being processed is placed on the stamping die 8, the arc edge of the bent part of the workpiece being processed and the two sides are respectively against the inner edges of the three limiting blocks 10; the inner concave parts are engaged with the positioning pins 9 to ensure the all-round positioning of the workpiece being processed in the stamping die 8.

[0061] Furthermore, the stamping die is provided with a plurality of point detection sensors 11. The point detection sensors 11 use optical fiber sensors to detect the positions of various parts of the workpiece being processed. When the deviation is large and the workpiece being processed is not completely fitted into the stamping die, the point detection sensors will feedback the detection information and stop the machine to remind.

[0062] In this embodiment, the tops of the limit block 10 and the positioning pin 9 are both chamfered to ensure that the loading and transferring assembly 3 can be smoothly placed into the stamping die 8 during the transfer process even if there is a deviation within 0.5 mm.

[0063] like Fig. 9 and 10 As shown, the material receiving assembly 6 includes a support base 6-1, a material receiving rotary table 6-2, a material receiving rod 6-3, a rotary drive motor and a receiving assembly. Among them, the material receiving rotary table 6-2 is rotatably connected to the support base 6-1, and can be rotated under the drive of the rotary drive motor. A plurality of material receiving bases that cooperate with the material receiving rod 6-3 are arranged on the material receiving rotary table 6-2. The material receiving rod 6-3 is fixed on the material receiving base and is used to temporarily store the finished workpiece. The receiving assembly is used to receive the finished workpiece transferred by the station switching mechanism and put it on the material receiving rod.

[0064] The specific structure is that the receiving component includes a lifting cylinder and a receiving bracket fixed at the moving end of the lifting cylinder. The lifting cylinder is fixed on the support base, and can drive the receiving bracket to complete the lifting operation in the vertical direction. The receiving bracket includes a connecting bracket, and four supporting frames arranged in sequence along the length direction of the connecting bracket. The supporting frames are grouped in pairs, and are respectively used to receive the finished workpieces transferred by the manipulator assembly in the corresponding unloading and transfer assembly. The spacing area between the two supporting frames in each group forms a material receiving area that cooperates with the receiving rod. When the supporting frame moves downward under the drive of the lifting cylinder, the finished workpiece placed on the supporting frame will automatically be put on the corresponding receiving rod, and slide down to the bottom of the receiving rod under the left and right of gravity.

[0065] In this embodiment, a mounting groove is provided on the outer surface of the material receiving base. A mounting rod is provided in the mounting groove. The mounting rod is rotatably matched with the material receiving base and can be fixed by bolts when rotating to a desired angle.

[0066] Furthermore, a material unloading positioning baffle is fixed to the periphery of the mounting rod to support the workpiece placed at the bottom of the receiving rod 6-3 to avoid jamming when the workpiece is being transported.

[0067] In this embodiment, there are four receiving bases, which are arranged in groups of two, along the axis of the receiving rotating table 6-2, and are centrally symmetrically arranged on the receiving rotating table 6-2. When the receiving rods 6-3 on one side of the receiving base are fully loaded with the workpieces to be processed, the rotating drive motor drives the receiving rotating table 6-2 to rotate 180 degrees, so that the positions of the receiving bases on both sides are interchanged, which is convenient for the staff to take the receiving rods 6-3 loaded with the workpieces to be processed.

[0068] The specific processing steps of the present invention are as follows: Step 1: The staff loads the workpiece to be processed onto the corresponding loading carrier according to the required orientation.

[0069] Step 2: Place the loading carrier on the loading station and fix it by the pneumatic clamp on the loading station. At the same time, the workpiece to be processed on the loading carrier is stacked on the arc-shaped claw body.

[0070] Step three: driven by the regulating cylinder 13-2, the partition 13-1 moves closer to the limiting column 5-2 until it fits with the outer surface of the workpiece being processed.

[0071] Step 4: The arc-shaped claw body is lifted upward under the drive of the lifting driving element, driving the stacked workpieces to be processed to be lifted one by one.

[0072] Step 5: The loading and transporting assembly 3 is driven by the X-axis slide assembly 2-1 to move to the top of the loading station. The loading and transporting assembly 3 is driven by the Z-axis slide assembly 2-2 to descend to the height of the workpiece to be processed. The vacuum suction nozzle 7-3 in the loading and transporting assembly 3 sucks the workpiece to be processed and transfers it to the stamping die 8 with the cooperation of the X-axis slide assembly 2-1 and the Z-axis slide assembly 2-2.

[0073] Step 6: The point detection sensor 11 on the stamping die 8 detects the position of each part of the workpiece to be processed, and the stamping process is performed if there is no deviation. If the deviation is large and the workpiece is not completely fitted into the stamping die 8, the point detection sensor 11 will feedback the detection information and stop the machine to remind.

[0074] Step seven, the material transfer assembly 4 moves to the position of the finished workpiece on the stamping die 8 for suction with the cooperation of the X-axis slide assembly 2-1 and the Z-axis slide assembly 2-2, and after the suction is completed, the sucked workpiece is transferred to the material unloading station under the cooperative drive of the X-axis slide assembly 2-1 and the Z-axis slide assembly 2-2, and is received by the receiving rod 6-3 until the receiving rod 6-3 is full.

[0075] Step 9: The rotating drive motor drives the receiving rotary table 6-2 so that the receiving rod 6-3 filled with finished workpieces faces the outer end. The staff manually transfers and outputs the loaded finished workpieces.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A universal bending punch machine with an automatic loading and unloading mechanism, comprising a processing base (1) and a station switching mechanism, characterized in that: It also includes a feeding assembly (5), a stamping die (8) and a receiving assembly (6) arranged on each station of the processing base (1); The station switching mechanism is used to grab the workpiece to be processed and pass through each station in sequence; The feeding assembly (5) comprises a loading platform (5-1), a loading carrier and a lifting mechanism (5-3); the loading carrier is used to load the corresponding workpiece to be processed; the lifting mechanism (5-3) is used to drive the loaded workpiece to be processed to be gradually lifted; The material receiving component (6) is used to receive the finished workpiece.

2. A universal bending punching machine with an automatic loading and unloading mechanism according to claim 1, characterized in that: The outer facade of the loading carrier is a polygonal structure matching the inner circle of the workpiece being processed, and one side is provided with a clearance groove (5-2-1) matching the bending part in the workpiece being processed.

3. A universal bending punch press with an automatic loading and unloading mechanism according to claim 2, characterized in that: The lifting mechanism (5-3) comprises a lifting bracket (5-3-1), a lifting drive element and a lifting adjustment component; the lifting adjustment component is slidably connected to the lifting bracket (5-3-1) and can be raised or lowered under the drive of the lifting drive element; The lifting adjustment component comprises a first sliding block and a lifting member (5-3-2); The first sliding block is slidably connected to the lifting bracket (5-3-1); the lifting member (5-3-2) is fixed on the first sliding block and can form an outer enclosure for the corresponding loading carrier.

4. A universal bending punch press with an automatic loading and unloading mechanism according to claim 1, characterized in that: A detection bracket is fixed on the loading platform (5-1); a partition assembly (13) and a feeding detection assembly (12) are installed on the detection bracket; the partition assembly (13) comprises a partition (13-1) and an adjusting cylinder (13-2); the partition (13-1) is fixed on the moving end of the adjusting cylinder (13-2) and can move closer to or farther from a corresponding loading carrier under the drive of the adjusting cylinder (13-2).

5. A universal bending punching machine with an automatic loading and unloading mechanism according to claim 4, characterized in that: The feeding detection component (12) comprises a displacement sensor and a limit sensor arranged in sequence from top to bottom; the displacement sensor is used to detect the distance of the first processed workpiece (100) located at the top of the limit column (5-2) relative to the top surface of the limit column (5-2); and the limit sensor is used to detect the number of processed workpieces (100) grasped by the feeding transfer component (3) when grasping the processed workpieces (100).

6. The universal bending punching machine with automatic loading and unloading mechanism according to claim 1, characterized in that: The material receiving assembly (6) comprises a supporting base (6-1), a material receiving rotating table (6-2), a material receiving rod (6-3), a rotating drive motor and a receiving assembly; the material receiving rotating table (6-2) is rotatably connected to the supporting base (6-1) and can be rotated under the drive of the rotating drive motor; the material receiving rod (6-3) is fixed on the material receiving rotating table (6-2), and the receiving assembly is used to receive the finished workpiece transferred by the workstation switching mechanism and put it on the material receiving rod.

7. A universal bending punch press with an automatic loading and unloading mechanism according to claim 1, characterized in that: The workstation switching mechanism comprises a linear slide module (2), and a loading transfer component (3) and a unloading transfer component (4) arranged on the linear slide module (2); the loading transfer component (3) can transfer the processed workpiece output by the feeding module to the stamping die (8) under the drive of the linear slide module (2); the unloading transfer component (4) can transfer the processed workpiece on the stamping die (8) to the receiving component (6) under the drive of the linear slide module (2).

8. A universal bending punching machine with an automatic loading and unloading mechanism according to claim 7, characterized in that: The stamping die (8) is provided with a positioning pin (9), a limiting block (10) and a plurality of point position detection sensors (11); the limiting blocks (10) are three in number and are used to define the circumferential edges of the workpiece being processed; the positioning pin (9) is used to define the inner concave portion on the opposite side of the arc edge; and the point position detection sensors (11) are used to detect the position of various parts of the workpiece being processed on the stamping die (8).

9. A universal bending punching machine with an automatic loading and unloading mechanism according to claim 8, characterized in that: The loading and transporting assembly (3) and the unloading and transporting assembly (4) both comprise a fixed bracket and a manipulator assembly (7) fixed on the fixed bracket; the fixed bracket is slidably matched with the linear slide module (2); the manipulator assembly (7) comprises a supporting cantilever (7-1) and a suction cup bracket (7-2) arranged at the end of the supporting cantilever (7-1); a plurality of vacuum suction nozzles (7-3) are arranged on the suction cup bracket (7-2).

10. According to the processing method of the universal bending punch machine with automatic loading and unloading mechanism as claimed in claim 9, the specific steps are as follows: Step 1: Loading: The staff loads the workpiece to be processed onto the corresponding loading carrier according to the required orientation of the workpiece, and places the loaded loading carrier on the loading platform (5-1); Step 2: feeding, the lifting mechanism (5-3) drives the loaded workpiece to be processed to be gradually lifted until the first workpiece to be processed at the top is flush with the top surface of the loading carrier; Step three, material loading and transfer, the material loading and transfer component (3) is driven by the linear slide module (2) to absorb the workpiece to be processed output by the feeding module and transfer it to the stamping die (8); after completing the transfer of the workpiece to be processed, the material loading and transfer component (3) and the material unloading and transfer component (4) are driven by the linear slide module (2) to move away from the stamping die, and enter step four; Step 4: stamping processing, each point detection sensor (11) on the stamping die (8) detects the position of each part of the workpiece being processed; when no position error is found between the workpiece being processed and the stamping die (8), stamping processing is performed, so that the bending part of the workpiece being processed is bent to form a finished workpiece, and then step 5 is entered; otherwise, the point detection sensor (11) feeds back detection information and stops the machine for reminder; Step 5: material unloading and transfer: the material unloading and transfer component (4) is driven by the linear slide module (2) to absorb the finished workpiece on the stamping die (8) and transfer it to the feeding component (5); Step 6: Finished product collection: the staff will collect the finished workpieces collected on the feeding assembly (5) and move them away.

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