Press system and machining method thereof

Abstract

The invention discloses a press machine system and a machining method thereof.The press machine system comprises a press machine, the press machine comprises an upper die capable of moving up and down and further comprises a carrying mechanism, and the carrying mechanism comprises a set of clamping jaws arranged at equal intervals and is in linkage with the upper die through a linkage mechanism; the two chucks of the set of clamping jaws of the carrying mechanism are opened synchronously when the press machine opens a die, the two chucks of the set of clamping jaws of the carrying mechanism are closed synchronously when the press machine opens the die, and after the two chucks of the set of clamping jaws are closed, the carrying mechanism drives the set of clamping jaws to move horizontally by a preset distance synchronously in the same direction through a driving device. According to the structure, the number of driving devices can be effectively reduced, the operation cost is reduced, meanwhile, the action of the carrying mechanism is matched with the mold opening and closing action of the upper mold and the lower mold, the matching degree is high, the opening and closing time of a clamping jaw of the carrying mechanism does not need to be controlled through a sensor and software programming, and the electric control difficulty is effectively reduced.

Description

Technical Field

[0001] The present invention relates to the field of new energy battery processing equipment, in particular to a press system and a processing method thereof. Background Art

[0002] When producing the battery shell of new energy batteries, it will be processed through a press system.

[0003] The patent with authorization announcement number CN208321791U discloses a punch press for processing battery aluminum shells.

[0004] An automatic feeding mechanism is provided to feed the workpiece, and the automatic feeding mechanism comprises a mechanical arm and a first driving mechanism and a second driving mechanism that drive the mechanical arm to translate in two directions.

[0005] Although this structure can meet the needs of moving workpieces between different workstations, it requires multiple drive mechanisms to drive the robot arm to move in two directions, which increases the operating cost. When the equipment is working, it is necessary to control the movement of the first drive mechanism through sensors to adapt to the opening and closing of the press, which increases the difficulty of electronic control. Summary of the invention

[0006] The purpose of the present invention is to solve the above problems existing in the prior art and to provide a press system and a processing method thereof.

[0007] The purpose of the present invention is achieved through the following technical solutions: A press system includes a press, which includes an upper mold that can move up and down, and also includes a conveying mechanism, which includes a group of clamps arranged at equal intervals and is linked with the upper mold through a linkage mechanism. When the upper mold moves downward to close the mold, two chucks of a group of clamps of the conveying mechanism are opened synchronously, and when the upper mold moves upward to open the mold, two chucks of a group of clamps of the conveying mechanism are closed synchronously. After the two chucks of a group of clamps are closed, the conveying mechanism drives a group of clamps to move synchronously and horizontally in the same direction for a predetermined distance through a driving device.

[0008] Preferably, the transport mechanism includes two parallel beams, a row of chucks are arranged on the two beams at equal intervals, the chucks on the two beams correspond to each other one by one, and a pair of chucks that are positioned opposite to each other belong to a clamp, the two beams can be movably arranged on a sliding seat along a first direction, the first direction is parallel to the extension direction of the beams, the sliding seat can be movably arranged on a guide device along a second direction, the second direction is perpendicular to the first direction; the two beams are also respectively connected to a sliding frame movably arranged on a supporting frame along the second direction, and the supporting frame is connected to a driving device that drives it to reciprocate along the first direction.

[0009] Preferably, a connecting block is provided at the bottom of the sliding seat, and an elastic member is provided between the connecting block and a fixed seat at a fixed position, and the elastic member applies a force opposite to the moving direction of the beam to the connecting block when the two beams move in opposite directions.

[0010] Preferably, the linkage mechanism includes a bracket fixed on the sliding seat, a driving member is provided at the upper end of each bracket, the axis of the driving member extends along the first direction, a driving plate matching the driving member is provided at the upper mold, a driving channel for the driving member to be embedded and moved is provided on the driving plate, and the driving channel includes an upper vertical section, a transition section and a lower vertical section arranged in sequence from top to bottom, and the upper vertical section is closer to the outer side of the driving plate than the lower vertical section.

[0011] Preferably, the two cross beams are also provided with adsorption devices located on the input side of the press, the adsorption devices are arranged on the cross beams at equal intervals and distributed along the first direction, and the adsorption devices on the two cross beams correspond to each other one by one, and the adsorption devices are used to adsorb the blanks transported by the feeding conveyor line and transfer them to the lower mold.

[0012] Preferably, there are at least two adsorption devices on each of the cross beams, and a lifting and positioning device is arranged below the cross beam and located between the two cross beams. The lifting and positioning device receives the blank adsorbed by the adsorption device from the loading conveyor line through a lifting platform, and clamps and positions the blank on the lifting platform through a group of positioning parts that are synchronously lifted and translated with the table plate of the lifting platform.

[0013] Preferably, the loading conveyor line comprises a belt conveyor, and the belt conveyor is arranged on a lifting mechanism that drives it to rise and fall between the first height and the second height.

[0014] Preferably, clamping notches are provided at opposite ends of the clamping head, and a notch is provided at the bottom of each clamping notch, and a detection sensor is provided at the notch.

[0015] Preferably, there are two presses and they are arranged in sequence, each press is equipped with one conveying mechanism, all the clamps of the two conveying mechanisms are distributed at equal intervals, and a docking mechanism is arranged between the two presses.

[0016] The processing method of the press system according to any one of the above-mentioned steps comprises the following steps: S1, a blank is placed into the lower die of the press in the open die state; S2, controls the press to close the mold for stretching; S3, after the stretching is completed, the press machine opens the mold. During the mold opening process, a group of clamps of the transport mechanism are closed, and two chucks of the clamps corresponding to the lower mold clamp the workpiece ejected after the stretching at the lower mold; S4, the transport mechanism drives all the clamps to translate downstream so that the stretched workpiece clamped by the clamps moves one position downstream; S5, a blank is placed into the lower die of the press in the open die state; S6, control the press to close the mold for stretching, at this time, all the jaws of the handling mechanism are opened, and the handling mechanism drives all the jaws to move in the opposite direction and reset; S7, repeat S3-S6.

[0017] The advantages of the technical solution of the present invention are mainly reflected in: The present invention enables the conveying mechanism to be linked with the upper mold through a linkage mechanism. When the upper mold is closed, the linkage mechanism causes the jaws of the conveying mechanism to open. When the upper mold is opened, the linkage mechanism causes the jaws of the conveying mechanism to close and clamp the workpiece obtained by stretching. A driving device drives a group of jaws to translate to realize conveying. This structure can effectively reduce the number of driving devices, reduce equipment costs and operating costs. At the same time, the action of the conveying mechanism is adapted to the opening and closing actions of the upper and lower molds, with a high degree of matching. There is no need to control the opening and closing timing of the jaws of the conveying mechanism through sensors and software programming, which effectively reduces the difficulty of electrical control.

[0018] The present invention arranges an elastic member between the connecting block and the sliding seat, which can prevent the vibration during rapid opening from affecting the position of the blank when the clamping jaws are opened. At the same time, when the clamping jaws are closed, the elastic member can apply power to make the clamping action of the clamping jaws faster and smoother.

[0019] The present invention adopts a belt conveyor for feeding, and uses an adsorption device on the crossbeam to adsorb and transport the blank on the belt conveyor to the lower die. Further combined with a lifting and positioning device, the position accuracy of the blank can be ensured, and the blank can be effectively adsorbed on the adsorption device, thereby ensuring that the blank is accurately transported to the lower die, which is beneficial to improving the stretching quality.

[0020] The clamping notch of the claw head of the present invention is provided with a notch for installing a detection sensor, which can effectively detect whether each clamp head clamps a workpiece, thereby ensuring the stability of the handling.

[0021] The present invention is divided into 6 steps when stretching the rectangular shell, which can effectively control the deformation amount of each stretching step, thereby effectively improving the quality of the finished product box and the yield rate. At the same time, the 6 steps can effectively divide the steps evenly, so that the two sets of presses can be used for synchronous and stable processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1is a perspective view of a press system of the present invention; Figure 2 is a side view of the press system of the present invention; Figure 3 is a three-dimensional diagram of the transport mechanism of the present invention; Figure 4 is a top view of the transport mechanism of the present invention; Figure 5 yes Figure 3 A partial enlarged view of the Figure 6 It is a schematic diagram of the positions of the transport mechanism and the linkage mechanism of the present invention, in which the linkage mechanism makes the clamping claws in a closed state; Figure 7 It is a top view of the present invention using automated equipment for loading, and the press is not shown in the figure; Figure 8 It is a three-dimensional diagram of the belt conveyor of the present invention; Fig. 9 is an end view of the transport mechanism of the present invention; Fig.10 is an end view of the jacking and positioning device of the present invention; Fig.11 is a three-dimensional diagram of the jacking adsorption device of the present invention; Fig.12 is a side view of a press system of the present invention using two sets of presses and a handling mechanism; Fig.13 It is a schematic diagram of two transport mechanisms of the present invention being connected via a supporting mechanism. DETAILED DESCRIPTION

[0023] The purpose, advantages and features of the present invention will be illustrated and explained by the non-limiting description of the following preferred embodiments. These embodiments are only typical examples of the application of the technical solution of the present invention, and any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of protection claimed by the present invention.

[0024] In the description of the scheme, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience and simplification of 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] The press system disclosed by the present invention is described below in conjunction with the accompanying drawings. Figure 1 , Attachment Figure 2 As shown, it includes a press machine 100, which includes an upper mold 110 that can move up and down and a lower mold 120 matched with the upper mold, and also includes a conveying mechanism 200, wherein the conveying mechanism 200 includes a group of clamps arranged at equal intervals and is linked with the upper mold 110 through a linkage mechanism 300. When the upper mold 110 moves downward to close the mold, two chucks 210 of a group of clamps of the conveying mechanism 200 are synchronously opened, and when the upper mold 110 moves upward to open the mold, the two chucks 210 of a group of clamps of the conveying mechanism 200 are synchronously closed, and after the two chucks 210 of a group of the clamps are closed, the conveying mechanism 200 drives a group of the clamps to move synchronously and horizontally in the same direction for a predetermined distance through a driving device 220.

[0026] The specific structure of the upper die and the lower die is a known technology, not an innovation of the present invention, and will not be described here. The number and shape of the upper die and the lower die can be designed according to the product to be processed and the specific process. Preferably, taking the processing of lithium battery shell as an example, the lithium battery shell needs to make the blank undergo 6 stretching to obtain a rectangular parallelepiped groove. Correspondingly, the press 100 includes 6 lower dies and they are arranged at equal intervals from the input side to the output side of the press 100, and the processing depth of the 6 lower dies increases from the input side to the output side of the press 100, and the width and length of the 6 lower dies decrease from the input side to the output side of the press 100.

[0027] Specifically, after stretching at the first lower die, the groove depth of the workpiece is between 25-30 mm, the length of the workpiece is between 330-335 mm, and the width of the workpiece is between 130-136 mm.

[0028] After stretching at the second lower die, the groove depth of the workpiece is between 35-45 mm, the length of the workpiece is between 315-320 mm, and the width of the workpiece is between 105-120 mm.

[0029] After stretching at the third lower die, the groove depth of the workpiece is between 45-50 mm, the length of the workpiece is between 300-305 mm, and the width of the workpiece is between 85-95 mm; After stretching at the fourth lower die, the groove depth of the workpiece is between 55-60 mm, the length of the workpiece is between 290-295 mm, and the width of the workpiece is between 70-75 mm; After stretching at the fifth lower die, the groove depth of the workpiece is between 63-70 mm, the length of the workpiece is between 280-285 mm, and the width of the workpiece is between 62-65 mm; After stretching at the sixth lower die, the groove depth of the workpiece is about 90 mm, the length of the workpiece is about 280 mm, and the width of the workpiece is about 61.5 mm; At the same time, each of the lower molds 120 is provided with a ejection mechanism (not shown in the figure) for ejecting the workpiece 400 at the lower mold to the top of the lower mold. The specific structure of the ejection mechanism can be designed as needed and will not be described in detail here.

[0030] Correspondingly, there are six upper molds 110, and the six upper molds are arranged on an upper mold frame 111. The upper mold frame 111 is connected to an opening and closing mold driving mechanism (not shown in the figure) that drives it to move up and down. The specific structure of the opening and closing mold driving mechanism is a known technology, which can use a hydraulic cylinder, a pneumatic cylinder, a motor, etc. as a power source to drive the upper mold frame to move up and down.

[0031] As attached Figure 3 , Attachment Figure 4 As shown, the transport mechanism 200 is used to synchronously transport the workpiece 400 between different lower dies, and includes two parallel beams 230, the two beams 230 extending in a straight line from the outside of the input side of the press 100 to the outside of the input side of the press 100, and the two beams 230 are located on both sides of a row of the lower dies, and a row of chucks 210 are arranged on the two beams 230 at equal intervals, and the chucks 210 on the two beams 230 correspond to each other one by one, and a pair of chucks 210 facing each other belong to a clamp, and the height of the chuck 210 is slightly higher than the top of the lower die so as to be able to clamp the workpiece 400 ejected to the top. The number of chucks 210 arranged on each beam 230 can be designed as needed. For example, when the number of the lower dies is 6, the number of chucks on the beam 230 is at least 6.

[0032] The structure of the chuck 210 can be designed as required. Figure 4 As shown, a clamping slot 211 is provided at the opposite end of the chuck 210, and the shape of the clamping slot 211 is adaptively designed according to the shape of the workpiece 400 at different lower dies. For example, the clamping slot 211 of the chuck 210 corresponding to the first three lower dies can be set to an arc shape, and the clamping slot 211 of the chuck 210 corresponding to the last three lower dies can be set to a U shape.

[0033] In order to accurately determine whether the chuck 210 of each clamping jaw has grasped the workpiece 400, a notch 212 is provided at the bottom of the clamping notch 211 of each clamping jaw 210, and a detection sensor 213 is provided at the notch, and the detection sensor 213 is a feasible device such as a proximity switch. The detection heights of the detection sensors on the two chucks 210 of a clamping jaw can be the same or different. When it is determined that the two detection sensors of a clamping jaw have detected the workpiece 400, the workpiece can be transported. Otherwise, the chuck 210 may not effectively grasp the workpiece 400, and the machine will stop and alarm at this time.

[0034] As attached Figure 4 As shown, in order to facilitate the installation of the clamp 210, the crossbeam 230 is preferably a profile. In addition, each clamp 210 is connected to the crossbeam 230 through an adjustment plate 214, and the adjustment plate 214 is provided with a waist-shaped hole 215 extending along the second direction Y. The installation position of the clamp 210 in the second direction Y is adjusted through the waist-shaped hole 215 to ensure reliable clamping.

[0035] As attached Figure 3 , Attachment Figure 4 As shown, the two crossbeams 230 are movably arranged on the sliding seat 240 along the first direction X, the first direction X is parallel to the extension direction of the crossbeam 230, each crossbeam 230 is connected to two sliding seats 240, and the two sliding seats 240 are close to the two ends of the crossbeam 230, and the sliding seat 240 is movably arranged on the guide device 250 along the second direction Y, and the second direction Y is perpendicular to the first direction X; the two crossbeams 230 are also connected to the sliding frame 270 movably arranged on the supporting frame 260 along the second direction Y, and the supporting frame 260 is connected to the driving device 220 that drives it to reciprocate along the first direction X. The guiding device 250 and the driving device 220 are arranged on the base frame, and the driving device 220 can be designed as needed. The driving device 220 is preferably a servo slide module, and of course it can also be other feasible devices or structures, such as a hydraulic cylinder or air pressure. The carrier frame 260 includes a bottom plate, which is cross-connected with the driving device 220, and a carrier plate is arranged on the bottom plate. The two ends of the carrier plate are respectively provided with a sliding frame 270, and the two sliding frames 270 are respectively provided with a C-shaped mounting groove, and the cross beam 230 is screwed at the mounting groove. At the same time, the sliding frame 270 is connected to one end of the two cross beams 230.

[0036] As attached Figure 5As shown, a connecting block 280 is provided at the bottom of the sliding seat 240, and an elastic member 290 is provided between the connecting block 280 and a fixed seat 201 at a fixed position. When the two beams 230 move in opposite directions, the elastic member 290 applies a force to the connecting block 280 in a direction opposite to the moving direction of the beam 230. Specifically, the fixed seat 201 is fixed to the base frame, the guide rail where the sliding seat 240 is located is fixed to the top of the fixed seat 201, and a guide rod 202 extending along the second direction Y is provided on the fixed seat 201, and the guide rod 202 is movably inserted on the connecting block 280, and the elastic member 290 is a spring sleeved on the guide rod 202.

[0037] As attached Figure 6 As shown, the linkage mechanism 300 includes a bracket 310 fixed on the sliding seat 240. The bracket 310 can be set on each of the sliding seats 240, or only on one of the two sliding seats 240 connected to each crossbeam 230. Preferably, the bracket 310 is set on all four sliding seats 240. The bracket 310 is L-shaped, and its vertical portion is fixed on the sliding seat 240 and is located on the outside of the crossbeam 230. The horizontal portion of the bracket 310 extends toward the crossbeam 230 next to it and a driving member 320 is provided at the far end. The axis of the driving member 320 extends along the first direction X. The driving member 320 can be a circular shaft. More preferably, the driving member 320 is a roller, and in order to ensure the stability of the roller, the horizontal portion of the bracket 310 includes two vertical plates 311 set in a gap, and the roller is set between the two vertical plates 311.

[0038] As attached Figure 6 As shown, driving plates 330 matching the driving member 320 are respectively arranged on both sides of the upper mold frame of the upper mold 110, and driving channels 331 for the driving member 320 to be embedded and moved are arranged on the driving plate 330. The driving channels 331 can be grooves or holes. In this embodiment, the driving channels 331 are preferably holes, and in order to adapt to the rollers between the two mounting plates, the driving plate 330 is located between the two mounting plates, including an upper vertical section 332, a transition section 333 and a lower vertical section 334 arranged in sequence from top to bottom, and the upper vertical section 332 is closer to the outer side of the driving plate 330 than the lower vertical section 334. At the same time, the number of the driving channels 331 is two and they are arranged on the driving plate 330 in a mirror-symmetrical manner.

[0039] When the press machine 100 is in the mold opening state, the rollers on the four brackets 310 are located at the lower vertical sections 334 of the four drive channels 331 and close to the lower ends of the lower vertical sections 334. At this time, the clamps 210 on the two crossbeams 230 are in a closed state, and the workpiece 400 at the lower mold can be clamped. After clamping the workpiece 400, the driving device 220 drives the carrier 260 to translate, thereby driving the two crossbeams 230 to translate along the first direction X and then translate the workpiece 400 clamped by the clamp to other lower molds. When the upper mold 110 moves downward to close the mold, the driving plate 330 moves downward. When the driving plate 330 moves up until the roller moves to the transition section 333, as the driving plate continues to move upward, the roller is driven by the transition section to translate in the direction away from the lower mold. At this time, the roller translates the driving bracket 310 and then drives the two beams 230 on the sliding seat 240 to move in opposite directions, so that the distance between the chucks 210 on the two beams 230 increases, and the jaws open. When the roller enters the upper vertical section 332, the roller stops translating. At this time, as the mold frame of the upper mold 110 continues to move downward, stretching is performed.

[0040] When the press system as described above works, the following steps are included: S1, a blank is placed in the first lower die of the press in the open die state, at this time, the clamping jaws of the handling mechanism are closed; the blank can be placed in the first lower die by manual loading, or by a loading robot. After the blank is placed in the lower die, the proximity sensor set at the lower die can be used to check whether there is a blank in the lower die.

[0041] S2, after determining that there is a blank at the first lower die, drive the upper die frame to move downward to close the die for stretching. During the closing process, all the clamps of the transport mechanism are opened.

[0042] S3, after the stretching is completed, the upper mold frame is controlled to move upward to open the mold. During the upward movement of the upper mold frame, all the clamps of the transport mechanism 200 are driven to close, and the two chucks 210 of the clamps located at the first lower mold clamp the workpiece 400 ejected after stretching at the first lower mold.

[0043] S4, at this time, the driving device 220 of the transport mechanism 200 drives the clamping claw holding the stretched workpiece 400 to move horizontally to the next lower die until the stretched workpiece 400 is transferred to the next lower die.

[0044] S5, another blank is placed into the first lower die of the press in the open die state. The specific process refers to S1 and will not be described here.

[0045] S6, controlling the upper mold frame to move downward to close the mold for stretching. During the closing process, all the clamps of the transport mechanism 200 are opened. After the clamps are opened, the transport mechanism 200 drives all the clamps to move in the opposite direction and reset.

[0046] S7, repeat the above steps S3-S6 to continuously perform stretching forming of the workpiece 400.

[0047] Example 2 In order to continuously load materials through automated equipment, in this embodiment, as shown in the attached Figure 7 As shown, a conveying device is used to convey the blank. Specifically, a feeding conveyor line 500 is provided at the input side of the press 100, and the feeding conveyor line 500 includes a belt conveyor 510. When the position of the belt conveyor 510 is fixed, its conveying surface is flush with or equal to the height of the top surface of the lower die, and the blank can be placed at the input end of the belt conveyor 510 manually or by automated equipment. In order to realize automatic loading, the input end of the belt conveyor 510 is also provided with an automatic loading mechanism 600, and the automatic loading mechanism 600 includes a jacking storage machine 610 and a transfer robot 620. The structure of the jacking storage machine 610 can be designed as needed. For example, in one embodiment, the jacking storage machine 610 includes a material trough, and the material trough includes a carrier. A group of limiting rods distributed in a square shape are arranged on the carrier. The blanks are stacked in the space between the limiting rods. A jacking device is arranged on the carrier. The jacking device can be a hydraulic cylinder, an electric cylinder or other feasible devices. The jacking device is connected to a pallet for carrying the stacked blanks, and the pallet can also be connected to a guide structure that moves it in a vertical direction.

[0048] More preferably, in order to avoid stopping the supply of parts when adding materials to the jack-up stocker 610, there are two jack-up stockers 610, which are arranged side by side.

[0049] The transfer robot 620 includes a moving mechanism and a vacuum absorber driven by the moving mechanism to translate and lift. The moving mechanism can be a known feasible device, such as a 4-axis robot or a 6-axis robot, etc., which is not limited here. The vacuum absorber absorbs the blanks at the top-lifting storage machine through a group of suction nozzles. Further, in order to facilitate the absorption of only one blank at a time, a spreader (not shown in the figure) is also provided at the top-lifting storage machine 610. The spreader is, for example, a known magnetic spreader. At the same time, in order to avoid interference between the two top-lifting storage machines 610, the two top-lifting storage machines 610 are movably arranged on a track extending along the second direction. When one top-lifting storage machine 610 needs to be charged, the top-lifting storage machine 610 is moved along the track to a position misaligned with the other top-lifting storage machine.

[0050] A stacking detection device (not shown in the figure) is arranged beside the belt conveyor 510 to detect whether there are multiple sheets of blanks stacked together at each location of the conveyor belt 510. When stacking is found, the conveyor belt is stopped and an alarm is issued. The stacking detection device is, for example, a distance sensor or an image acquisition device. The distance sensor can be arranged above the belt conveyor 510, and whether the distance meets the predetermined value is determined by measuring the distance between the distance sensor and the top of the blank on the belt conveyor 510. When the stacking detection device is an image acquisition device, the side of the image acquisition device can be arranged on the side of the belt conveyor 510 with the lens facing the belt conveyor 510, and whether there is stacking is determined by analyzing the thickness of the blank in the image acquired by the image acquisition device.

[0051] As attached Figure 8 As shown, a clamping and positioning device 520 is provided at the belt conveyor 510 near its output end. The structure of the clamping and positioning device 520 can be designed as needed. For example, a clamping driver 521 is provided on both sides of the belt conveyor 510. The clamping driver 521 can be a cylinder, a hydraulic cylinder, etc. The clamping driver 521 is connected to a positioning claw 522. The positioning claw 522 is a C-shaped claw and the opening of the positioning claw 522 faces the belt conveyor 510. When the blank moves between the two positioning claws 522, the two clamping drivers 521 drive the two positioning claws to move toward the blank so as to clamp and position the blank.

[0052] Of course, in another embodiment, the clamping and positioning device 520 can also drive the two positioning claws 522 through a double-headed cylinder arranged at the bottom of the belt conveyor 510.

[0053] In order to prevent the blank from being contaminated with debris, particles, etc. and affecting the stretching quality, a cleaning device (not shown in the figure) is further provided at the belt conveyor 510. The cleaning device can be an air nozzle arranged upstream of the clamping and positioning device 520, which cleans the blank by blowing air onto the surface of the blank transported on the belt conveyor 510.

[0054] At this time, in order to facilitate the accurate transfer of the blanks at the output end of the feeding conveyor line 500 to the press 100, vacuum adsorption is used to transfer the blanks.

[0055] As attached Fig. 9As shown, adsorption devices 203 located on the input side of the press 100 are also provided on the two crossbeams 230. The adsorption devices 203 are arranged on the crossbeams 230 at equal intervals and distributed along the first direction X, and the adsorption devices 203 on the two crossbeams 230 correspond to each other one by one. The adsorption devices 203 are used to adsorb the blanks at the output end of the feeding conveyor line 500 and transfer them to the first lower die of the press.

[0056] As attached Figure 4 , Attachment Fig. 9 As shown, the suction device 203 includes a connecting plate 204 for connecting the crossbeam 230, and two suction nozzles 205 are arranged on the upper mounting plate of the connecting plate 204 and are located inside the crossbeam 230 and distributed along the first direction X. In addition, two connecting holes 206 distributed in a V shape are arranged on the connecting plate 204, and the two suction nozzles 205 are respectively installed at the connecting holes 206. At the same time, the bottoms of the two suction nozzles 205 are slightly higher than the top of the lower mold, so that the suction nozzles 205 can be translated with the crossbeam 230 to the top of the first lower mold to place the adsorbed blanks on the first lower mold.

[0057] Since the suction nozzle 205 cannot move up and down after being fixed on the beam 230, in order for the suction nozzle 205 to drive the blank to move horizontally on the belt conveyor 510 when it moves horizontally, the lower end of the suction nozzle 205 needs to be slightly higher than the surface of the blank on the belt conveyor, which may result in the suction nozzle 205 being unable to stably and reliably absorb the blank.

[0058] Correspondingly, the belt conveyor 510 is arranged on a lifting mechanism (not shown in the figure) that drives it to rise and fall between the first height and the second height; at the first height, the conveying surface of the belt conveyor 510 is equal to or slightly higher than the bottom height of the suction nozzle 205 of the suction device 203; at the second height, the conveying surface of the belt conveyor is lower than the bottom of the suction nozzle 205. In this way, when the suction nozzle 205 is not needed to be sucked, the belt conveyor 510 is kept at the second height for conveying. When the suction nozzle 205 moves to the top of the blank on the belt conveyor 510, the lifting mechanism lifts the belt conveyor 510 to the first height, so that the blank at the output end of the belt conveyor 510 can be attached to the bottom of the suction nozzle 205. At this time, the suction nozzle 205 can stably suck the blank. After the suction nozzle 205 sucks the blank, the lifting mechanism drives the belt conveyor 510 to return to the second height for conveying, and when a blank is conveyed to the output end of the belt conveyor 510, the belt conveyor 510 stops conveying.

[0059] The lifting mechanism can use a hydraulic cylinder or a pneumatic cylinder as a power source, and use a guide rail mechanism for vertical guidance. More preferably, the lifting mechanism uses a motor to drive a known cam lifting mechanism to drive the belt conveyor 510 to lift. Of course, the lifting mechanism is not necessary, as long as the suction nozzle 205 is controlled to be located above the blank on the belt conveyor at a set distance to ensure that the suction nozzle can reliably absorb the blank.

[0060] The number of the adsorption devices 203 on each crossbeam 230 can be designed according to actual needs. For example, when the blank is directly adsorbed from the belt conveyor 510 and directly transferred to the first lower mold, there can be only one adsorption device 203.

[0061] As attached Figure 4 As shown, there are at least two adsorption devices 203 on each crossbeam 230, and the spacing between the adsorption devices 203 on one crossbeam 230 matches the spacing between the chucks, and the spacing between adjacent adsorption devices 203 and clamps matches the spacing between the chucks.

[0062] This is because the blank is offset when being conveyed on the feeding conveyor line 500. Therefore, before transferring the blank to the first lower die, the blank needs to be positioned. Fig. 9 As shown, a lifting and positioning device 600 is arranged below the cross beam 230 and located between the two cross beams 230. The lifting and positioning device 600 receives the blank adsorbed by the adsorption device 203 from the loading conveyor line 500 through a lifting platform, and clamps and positions the blank on the lifting platform through a group of positioning parts 680 that are synchronously lifted and translated with the table plate 630 of the lifting platform.

[0063] As attached Fig.10 As shown, the lifting and positioning device 600 is arranged on the mold base of the lower mold 120, which includes a fixed frame 610, and the fixed frame 610 includes a horizontal plate 611. The lifting platform is arranged on the horizontal plate 611, and the lifting platform includes a lifting drive 620 and a table 630 driven to move up and down by the lifting drive 620. The lifting drive 620 can be a feasible device such as a cylinder or a hydraulic cylinder. The lifting drive 620 can be installed on the top or bottom of the horizontal plate 611. Preferably, the lifting drive 620 is fixed to the bottom of the horizontal plate 611, and the lifting drive is connected to the guide shaft 650 of the guide rod assembly through the adapter plate 640. The guide sleeve 660 of the guide rod 202 assembly is fixed on the horizontal plate 611, and the upper end of the guide shaft 650 is connected to the table 630.

[0064] As attached Fig.10As shown, a positioning driver 670 is also provided at the bottom of the table 630, and the positioning driver 670 is connected to the positioning member 680 to reciprocate along the second direction Y to realize the positioning of the blank. The positioning driver 670 can be two independent cylinders or hydraulic cylinders. Preferably, the positioning driver 670 is a double-slider cylinder, and the two driving sliders of the double-slider cylinder are respectively connected to a T-shaped plate 690. The T-shaped plate 690 extends to the opposite sides of the table 630 and is respectively provided with two positioning members 680. The positioning members 680 are positioning pins extending in the vertical direction. The two positioning members 680 on one T-shaped plate 690 are opposite to each other in the first direction X, and the four positioning pins are distributed in a rectangular shape. When the positioning driver 670 drives the two T-shaped plates 690 to move toward each other, the four positioning pins move synchronously and in detail to position the blank on the table 630.

[0065] When working, the lifting storage machine lifts the blanks stored thereon to the separator, and the separator separates the top few blanks. Then, the transfer robot adsorbs the top blank through the vacuum adsorption device and places the blank on the belt conveyor. After the blank is placed on the belt conveyor, the belt conveyor starts to convey the blanks. The transfer robot places the blanks one by one on the belt conveyor according to the predetermined loading rhythm, and the belt conveyor stops conveying when unloading. When the blank on the belt conveyor moves through the cleaning device, the cleaning device blows the upper surface of the blank. When the blank moves to the clamping and positioning device, the two positioning claws of the clamping and positioning device close to position the blank. When the blank is transported to the discharge position, the first suction nozzle (the upstreammost suction nozzle) on the conveying mechanism is directly above the blank at the discharge position. At this time, the lifting mechanism drives the belt conveyor to lift to a high position so that the blank contacts the suction nozzle and is adsorbed by the suction nozzle. After the suction nozzle adsorbs the blank, the crossbeam translates downstream, and the blank adsorbed by the suction nozzle moves to directly above the lifting and positioning device. The table of the lifting and positioning device rises to receive the blank adsorbed by the suction nozzle. The suction nozzle stops adsorbing, and the table moves downward. At the same time, the positioning driver drives the positioning member to position the blank on the table. Then the crossbeam moves in the opposite direction and resets, and sucks the next blank at the belt conveyor again. At the same time, the second suction nozzle moves to the top of the lifting and positioning device, and the table rises to make the blank contact with the second suction nozzle. After the second suction nozzle sucks the blank, the positioning member moves in the opposite direction and resets. At the same time, the table moves down. At this time, the first suction nozzle sucks another blank. Then, the crossbeam moves downstream, and the first suction nozzle moves another blank to the top of the lifting and positioning device. The second suction nozzle transfers the blank positioned at the lifting and positioning device to the first lower mold. The above process is repeated to continuously transport the blank conveyed by the belt conveyor to the first lower mold.

[0066] As attached Figure 4, Attachment Fig.11 As shown, when the number of adsorption devices on each crossbeam is greater than 2, a plurality of jacking-type fixed tables 800 are further provided on the outer side of the input side of the press to cooperate with the additional adsorption devices. For example, when the number of adsorption devices on a crossbeam is 4, two jacking-type fixed tables are required. The structure of the jacking-type fixed table can refer to the jacking positioning device 600, with the difference that: the jacking-type fixed table no longer needs to be provided with the positioning driver 670 and the positioning member 680, but an adsorption hole 810 is provided on the table plate 630, and a vacuum adsorption disk 820 is provided at the adsorption hole 810. There are two vacuum adsorption disks arranged along the second direction Y, and the two vacuum adsorption disks are fixed on the mounting frame 830 at the bottom of the table plate.

[0067] Example 2 In the above embodiment, six lower molds can be set at one press machine 100, but this requires a high driving force. In order to ensure the stretching quality, as shown in the attached Fig.12 As shown, there are two presses 100 arranged in sequence, each of the presses 100 has three lower molds, and each of the presses 100 is equipped with a conveying mechanism 200, all the jaws of the two conveying mechanisms 200 are evenly spaced, the conveying mechanism arranged at the upstream press 100 includes an adsorption device, and at the same time, a docking mechanism 700 is arranged between the two presses 100, and an output support mechanism 900 is arranged on the output side of the downstream press.

[0068] As attached Fig.13 As shown, the docking mechanism 700 includes a first jacking and adsorption mechanism 710, a support mechanism 720, and a second jacking and adsorption mechanism 730, which are arranged in sequence. The first jacking and adsorption mechanism 710 is arranged at the output side of the upstream press 100, and is used to receive the workpiece 400 output from the upstream press 100. The support mechanism 720 is used to receive the workpiece 400 located between the first jacking and adsorption mechanism 710 and the second jacking and adsorption mechanism 730. The second jacking and adsorption mechanism 730 is arranged at the input side of the downstream pressure belt conveyor 510, so that the workpiece 400 can be smoothly transported to the downstream pressure belt conveyor 510. The structures of the first jacking and adsorption mechanism 710 and the second jacking and adsorption mechanism 730 can refer to the above-mentioned jacking fixed platform, and will not be repeated here. After the clamp grasps the workpiece 400, when the clamp moves horizontally, the table plates of the first lifting and adsorption mechanism 710 and the second lifting and adsorption mechanism 730 descend. When the clamp moves horizontally into place, the table plates of the first lifting and adsorption mechanism 710 and the second lifting and adsorption mechanism 730 rise to receive the workpiece 400 clamped by the clamp. At the same time, the vacuum adsorption plate on the table plate starts to adsorb and fix the workpiece 400 to prevent the vibration when the clamp is opened from affecting the position of the workpiece 400.

[0069] The support mechanism 720 includes a carrier plate 721, which extends along the first direction X. At the same time, a row of adsorption areas with equal spacing is provided on the carrier plate 721. The adsorption areas correspond to the positions of several clamps on the transport mechanism 200. At least one through hole is provided at each adsorption area. A vacuum suction cup 722 is provided at each through hole. The adsorption end of the vacuum suction cup 722 faces upward and the suction cup is fixed on a mounting frame (not shown in the figure) at the bottom of the carrier plate 721. At the same time, the carrier plate 721 is connected to a lifting device (not shown in the figure) that drives it to move up and down. Similarly, when the clamp grabs the workpiece 400 and transfers it, the lifting device drives the carrier plate to descend to avoid interfering with the translation of the workpiece 400. When the clamp is translated into place, the lifting device drives the carrier plate 721 to rise below the workpiece 400 clamped by the clamp to support the workpiece 400. At the same time, the adsorption area on the carrier plate 721 adsorbs and fixes the workpiece 400 corresponding to the adsorption area.

[0070] The output support mechanism 900 includes a third lifting and adsorption mechanism 910 and a fourth lifting and adsorption mechanism 920. The third lifting and adsorption mechanism is arranged on the lower die base of the downstream press machine, and its structure refers to the first lifting and adsorption mechanism. The structure of the fourth lifting and adsorption mechanism refers to the support mechanism 720.

[0071] There are many implementation methods of the present invention, and all technical solutions formed by equivalent transformation or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A press system, comprising a press, wherein the press comprises an upper die that can move up and down, characterized in that: It also includes a conveying mechanism, which includes a group of clamping jaws arranged at equal intervals and is linked with the upper mold through a linkage mechanism. During the process of the upper mold moving downward to close the mold, two clamping heads of a group of clamping jaws of the conveying mechanism are synchronously opened. During the process of the upper mold moving upward to open the mold, two clamping heads of a group of clamping jaws of the conveying mechanism are synchronously closed. After the two clamping heads of a group of clamping jaws are closed, the conveying mechanism drives a group of clamping jaws to move synchronously and horizontally in the same direction for a predetermined distance through a driving device.

2. The press system according to claim 1, characterized in that: The transport mechanism includes two parallel beams, and a row of chucks are arranged on the two beams at equal intervals. The chucks on the two beams correspond to each other one by one, and a pair of chucks that are directly opposite to each other belong to a clamp. The two beams can be movably arranged on a sliding seat along a first direction, and the first direction is parallel to the extension direction of the beams. The sliding seat can be movably arranged on a guide device along a second direction, and the second direction is perpendicular to the first direction; the two beams are also respectively connected to a sliding frame movably arranged on a carrier frame along the second direction, and the carrier frame is connected to a driving device that drives it to reciprocate along the first direction.

3. The press system according to claim 2, characterized in that: A connecting block is arranged at the bottom of the sliding seat, and an elastic member is arranged between the connecting block and a fixed seat at a fixed position. When the two beams move in opposite directions, the elastic member applies a force to the connecting block in a direction opposite to the moving direction of the beams.

4. The press system according to claim 2, characterized in that: The linkage mechanism includes a bracket fixed on the sliding seat, and a driving member is arranged at the upper end of each bracket, and the axis of the driving member extends along the first direction. A driving plate matching the driving member is arranged at the upper mold frame where the upper mold is located, and a driving channel for the driving member to be embedded and moved is arranged on the driving plate. The driving channel includes an upper vertical section, a transition section and a lower vertical section which are arranged in sequence from top to bottom, and the upper vertical section is closer to the outer side of the driving plate than the lower vertical section.

5. The press system according to claim 2, characterized in that: The two crossbeams are also provided with adsorption devices located on the input side of the press. The adsorption devices are arranged on the crossbeams at equal intervals and distributed along the first direction, and the adsorption devices on the two crossbeams correspond to each other one by one. The adsorption devices are used to adsorb the blanks transported by the feeding conveyor line and transfer them to the lower mold.

6. The press system according to claim 5, characterized in that: There are at least two adsorption devices on each crossbeam, and a lifting and positioning device is arranged below the crossbeam and between the two crossbeams. The lifting and positioning device receives the blank adsorbed by the adsorption device from the loading conveyor line through a lifting platform, and clamps and positions the blank on the lifting platform through a group of positioning parts that are synchronously lifted and translated with the table plate of the lifting platform.

7. The press system according to claim 5, characterized in that: The feeding conveyor line comprises a belt conveyor, and the belt conveyor is arranged on a lifting mechanism that drives the belt conveyor to rise and fall between a first height and a second height.

8. The press system according to claim 1, characterized in that: The opposite ends of the clamping head are provided with clamping notches, and a notch is provided at the bottom of each clamping notch, and a detection sensor is provided at the notch.

9. The press system according to any one of claims 1 to 8, characterized in that: There are two presses which are arranged in sequence, each of which is equipped with a transport mechanism, all the clamps of the two transport mechanisms are distributed at equal intervals, and a docking mechanism is arranged between the two presses.

10. The processing method of a press system according to any one of claims 1 to 9, characterized in that: The steps include: S1, a blank is placed into the lower die of the press in the open die state; S2, controls the press to close the mold for stretching; S3, after the stretching is completed, the press machine opens the mold. During the mold opening process, a group of clamps of the transport mechanism are closed, and two chucks of the clamps corresponding to the lower mold clamp the workpiece stretched at the lower mold; S4, the transport mechanism drives all the clamps to translate downstream so that the stretched workpiece clamped by the clamps moves one position downstream; S5, another blank is placed into the lower die of the press in the open die state; S6, controlling the press machine to close the mold for stretching, at which time, all the clamps of the transport mechanism are opened, and the transport mechanism drives all the clamps to move in the opposite direction and reset; S7, repeat S3-S6.

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