Automatic production line and method for plate heat exchanger plates

Abstract

The present application relates to a kind of plate heat exchanger plate automatic production line and method, belong to plate heat exchanger sheet group production processing technical field.The technical scheme is: containing NC numerical control leveling feeding three-in-one feeder, stamping forming machine, gantry type punching machine, cooling plate sheet leveling machine, high-precision shearing sheet machine, double-end spot welding machine, long-side double-end seam welder, long-side double-end longitudinal shearing machine and automatic sheet stacking machine, which are sequentially arranged and connected by conveying roller way;The conveying speed and interval of the plate sheet are adjusted according to the production rhythm of each station, so that the production line can continuously produce.The positive effect of the present application is: to realize the automation of the whole process from the material roll to the finished product, greatly improve the production efficiency of the heat exchanger sheet, reduce the labor intensity of the operator, and at the same time improve the quality of the product, provide strong support to meet the needs of rapid development of production, and have excellent popularization and application value.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of plate heat exchanger plate automatic production line and method, belong to plate heat exchanger sheet group production processing technical field. BACKGROUND

[0002] With the extensive application of industrial and civil field heat equipment, plate heat exchanger has become one of the very important equipment. Plate heat exchanger has the advantages of compact structure, high heat exchange efficiency, is widely used in petroleum, chemical industry, metallurgy, electric power and other industries. Plate heat exchanger is a new type of high efficiency heat exchanger by a series of heat exchanger plate with certain corrugated shape is stacked, thin rectangular channel is formed between various plates, heat exchange is carried out through plate. Compared with conventional tube-shell heat exchanger, in the same flow resistance and pump power consumption, its heat transfer coefficient is much higher, in the applicable range, there is a tendency to replace tube-shell heat exchanger. At present, the plate heat exchanger plate production of prior art is still multi-station, semi-automatic production mode, manual intervention is more, production efficiency is low, quality is difficult to guarantee, can not further meet the user high efficiency production requirements. SUMMARY

[0003] The purpose of the present application is to provide a kind of plate heat exchanger plate automatic production line and method, realize the automation production from material roll to finished product whole process, greatly improve the production efficiency of heat exchanger sheet, reduce operator labor intensity, improve the quality of product at the same time, to meet the needs of the rapid development of production provides strong support, has good popularization and application value, solve the above technical problems of prior art.

[0004] The technical scheme of the present application is as follows:

[0005] The application discloses an automatic production line for plate heat exchanger plates, which comprises an NC numerical control leveling and feeding three-in-one feeder, a stamping forming machine, a gantry type punching machine, a cooling plate leveling machine, a high-precision plate shearing and combining machine, a double-head spot welding machine, a long-side double-head seam welding machine, a long-side double-head longitudinal shearing machine and an automatic plate stacking machine which are arranged in sequence and connected through conveying roller ways; the NC numerical control leveling and feeding three-in-one feeder is used for automatically feeding a steel coil, leveling and feeding plates and serving in a plate heat exchanger plate stamping forming process; the stamping forming machine performs flow channel stamping forming on the leveled plates through a hydraulic mode, and simultaneously stamps two plates; the gantry type punching machine performs plate cutting through a hydraulic mode, and simultaneously cuts two plates; the cooling plate leveling machine is used for leveling two plates; the high-precision plate shearing and combining machine is used for precisely cutting a single plate, and is used for compensating the precision error of the NC numerical control leveling and feeding three-in-one feeder; the high-precision plate shearing and combining machine can combine two single plates to form a plate group; the double-head spot welding machine is used for intermittently spot welding the long sides of the combined plates, so that the two plates become a whole, and prepares for long-side seam welding; the long-side double-head seam welding machine is used for performing seam welding on the two long sides of the plates after spot welding; the long-side double-head longitudinal shearing machine is used for cutting the long sides of the workpieces; and the automatic plate stacking machine adopts a frame trolley, and quickly stacks the welded plates through a grabber.

[0006] The conveying roller way adjusts the conveying speed and interval of the plates according to the production rhythm of each station, so that the production line can continuously produce.

[0007] The NC numerical control leveling and feeding three-in-one feeder comprises two uncoilers, two sets of pressing platforms, a leveling and feeding device, an encoder detection device and a fixed frame, the two uncoilers are installed at the most front end of the conveying roller way, respectively match a set of pressing platform, the two uncoilers are respectively installed with a material coil, the pressing platform shears the material head of the material coil to be neat, and is used for butt joint of new and old material coils; the uncoiler is provided with the leveling and feeding device, which is used for leveling the material coil into a plate and serving feeding; the leveling and feeding device is provided with two conveying roller ways which respectively match the two uncoilers and convey the leveled plates; the fixed frame is the basis of the leveling and feeding device; the encoder detection device is used for feeding back the feeding length, so as to ensure the feeding precision; the above configuration can ensure that the two plate types are simultaneously stamped in the subsequent process, and the stamping rhythm is saved.

[0008] The punch forming machine comprises an oil hydraulic forming machine and a forming die, the forming die is installed on the oil hydraulic forming machine, the forming die comprises two sets of positive and negative mold cores, which are installed on a die plate, the two sets of positive and negative mold cores are matched with the delivered sheet on the two conveying roller ways respectively and are subjected to positive and negative punching respectively, and the positive and negative sheet are punched out respectively; the forming die is provided with a die changing frame on the side, and the forming die can be slid onto the die changing frame for quick die changing.

[0009] The gantry type punching machine comprises an oil hydraulic machine, a cutting die and an auxiliary material rack, the cutting die is arranged on the oil hydraulic machine and is matched with the positive and negative punched sheets on the two conveying roller ways, the auxiliary material racks are arranged on the two conveying roller ways in front of the cutting die respectively; the single sheet punched and formed has insufficient overall rigidity and needs to be supported by the auxiliary material rack, and the auxiliary material rack is used to enter the oil hydraulic machine, the oil hydraulic machine is provided with the cutting die, and the sheet cutting is completed.

[0010] The cooling sheet leveling machine comprises a leveling frame, leveling rollers and a driving mechanism one, the leveling frame is a basic component, the leveling rollers and the driving mechanism one are installed on the leveling frame, the driving mechanism one is connected with the leveling rollers through a chain, and the outer edge of the leveling roller is rubberized; the driving mechanism one is powered by a variable frequency motor, the leveling rollers are driven to rotate through the chain, two sets of leveling rollers complete the leveling of the cut single sheet on the two conveying roller ways, the outer edge of the leveling roller is rubberized to protect the surface of the single sheet from being scratched.

[0011] The high-precision shearing and splicing machine comprises a precision shearing machine and a splicing machine arranged on a conveying roller, the precision shearing machine is consistent with the structure of the gantry die cutting machine, and the die is a shearing die; the splicing machine comprises a frame assembly one, a gripper moving and carrying mechanism one, a gripper lifting mechanism one, a splicing gripper and a splicing rack, the frame assembly one is horizontally arranged above the splicing rack, the gripper moving and carrying mechanism one is arranged on the frame assembly one and is provided with a horizontal linear guide rail, the gripper moving and carrying mechanism one is drivingly connected with a moving and carrying cylinder, the moving and carrying cylinder is extended and retracted to drive the gripper moving and carrying mechanism one to move, the gripper lifting mechanism one is arranged on the side of the gripper moving and carrying mechanism one and is provided with a vertical linear guide rail, the splicing gripper is a sponge suction cup gripper and is rigidly connected with the gripper lifting mechanism one, the gripper lifting mechanism one is drivingly connected with a lifting cylinder, the lifting cylinder is extended and retracted to drive the splicing gripper to move up and down to pick up a positive plate on the conveying roller and place the positive plate on a negative plate to splice the positive plate and the negative plate, and the splicing rack comprises a rack body one, a cross beam, a guide mechanism and a material pushing trolley, the rack body one is a basis of the splicing rack, the cross beam is arranged on the rack body one and is provided with a linear guide rail, a cross beam cylinder is extended and retracted to drive the cross beam to clamp and release, the guide mechanism is arranged on the cross beam and is used for aligning the positive plate and the negative plate in the width direction during splicing, and the material pushing trolley is arranged on the rack body one and is provided with a linear guide rail and is driven by a servo motor one to align the positive plate and the negative plate in the length direction.

[0012] The double-head spot welding machine comprises a spot welding body, a pressing head, a spot welding power supply and an end positioning mechanism, the spot welding body is a basis of the equipment, the pressing head, the spot welding power supply and the end positioning mechanism are all arranged on the spot welding body, the end positioning mechanism cooperates with a pushing plate trolley of a splicing rack of the splicing machine to align the positive plate and the negative plate in the length direction, the positive plate and the negative plate are spot welded along the long edges to be fixed, and the heat exchanger plate is formed into a whole to meet the requirements of seam welding. The spot welding power supply (in the spot welding body) adopts an inverter direct current welding system, the welding parameters are more accurate and stable, and the welding quality is ensured.

[0013] The long-edge double-head seam welding machine comprises a seam welding body, a pressing head, a seam welding head, a welding wheel driving mechanism and a seam welding power supply, the welding body is a basis of the equipment, the pressing head and the welding wheel driving mechanism are both arranged on the seam welding body, the seam welding head is rigidly connected with the pressing head, the pressing head is used for pressing and releasing the workpiece, the seam welding power supply is an inverter alternating current system, provides power for the long-edge double-head seam welding machine, the welding parameters are more accurate and stable, the long-edge double-head seam welding machine is suitable for seam welding and ensures the welding quality.

[0014] The long-edge double-head longitudinal shearing machine comprises a machine base, longitudinal shearing knives, cutting knives and a driving mechanism two, the machine base is a basis of the equipment, the longitudinal shearing knives, the cutting knives and the driving mechanism two are all arranged on the machine base, the driving mechanism two is driven by a variable frequency motor, rotates the longitudinal shearing knives and the cutting knives to cut materials through a gear set, and the longitudinal shearing knives and the cutting knives can cut the materials in two directions. The long-edge double-head longitudinal shearing machine is used for cutting the long edge of the workpiece to ensure the whole width and facilitate the subsequent assembly of the plate group.

[0015] The automatic chip machine comprises a second cantilever assembly, a second gripper moving mechanism, a second gripper lifting mechanism, a gripper overturning mechanism, a gripper, a receiving rack and a taking rack, the second cantilever assembly is horizontally arranged above the taking rack, the second gripper moving mechanism is installed on the beam of the second cantilever assembly and is provided with horizontal rails, is driven by a second servo motor and drives the second gripper lifting mechanism to move; the second gripper lifting mechanism is installed on the side of the second gripper moving mechanism and is provided with vertical rails, is driven by a third servo motor and drives the gripper overturning mechanism to move up and down, the gripper overturning mechanism is rigidly connected with the second gripper lifting mechanism and is driven by a fourth servo motor to overturn the gripper; the gripper is a sponge suction cup gripper and is rigidly connected with the gripper overturning mechanism; the receiving rack is arranged obliquely to ensure that the material sheet will not fall down when the material sheet is stacked; after the stacking is completed, an operator manually completes the assembly of the sheet group on the receiving rack, and then the whole sheet group is hoisted to a subsequent work station, and thus the single sheet processing procedure is completed.

[0016] The conveying roller table comprises a second frame, conveying rollers, side leaning rollers, a pressing mechanism and a third driving mechanism, the second frame is the main body of the conveying roller table, the conveying rollers, the side leaning rollers, the pressing mechanism and the third driving mechanism are all installed on the second frame, the pressing mechanism presses the workpiece onto the conveying rollers when the workpiece is conveyed, the third driving mechanism is powered by a fifth servo motor and drives the conveying rollers to rotate through chains, and thus the workpiece is driven to move forward and backward; before the sheet combining procedure, the conveying roller table is a double roller table, and after the sheet combining procedure, the conveying roller table is a single roller table.

[0017] An automatic plate heat exchanger plate production method adopts the automatic plate heat exchanger plate production line, and the steps are as follows:

[0018] The NC numerical control leveling and feeding three-in-one feeding machine is used for automatically feeding, leveling and servo feeding of the steel coil in the plate heat exchanger plate stamping forming process; the stamping forming machine performs flow channel stamping forming on the leveled plate through a hydraulic mode, and simultaneously stamps two positive and reverse plates at a time; the gantry type punching machine adopts a hydraulic mode to cut the plate; the cooled plate leveling machine is used for leveling two plates; the high-precision shearing and combining machine is used for accurately cutting a single plate; the high-precision shearing and combining machine combines the positive and reverse single plates together to form a sheet group; the double-head spot welding machine is used for intermittently spot welding the long edges of the combined plate, so that the positive and reverse plates become an integral whole; the long edge double-head seam welding machine is used for seam welding the two long edges of the plate after spot welding; the long edge double-head longitudinal shearing machine is used for cutting the long edge of the workpiece; and the automatic chip machine adopts a cantilever trolley and quickly stacks the welded plate through the gripper.

[0019] The present application realizes automatic production of plate heat exchanger plates, including coiling, automatic stamping forming, fixed-length cutting, high-precision shearing, leveling, sheet combining, spot welding, long edge seam welding, long edge shearing and automatic chip stacking. The conveying roller tables between the work stations are matched with each other to realize full automation of the above process.

[0020] The positive effect of the present application: realize the automation production from the material roll to the finished product, greatly improve the production efficiency of the heat exchanger sheet, reduce the labor intensity of the operator, at the same time improve the product quality, provide strong support to meet the needs of the rapid development of production, have good popularization and application value. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is the top view structural schematic diagram of the NC numerical control leveling and feeding three-in-one feeder of the embodiment of the present application;

[0022] Figure 2 is the top view structural schematic diagram of the stamping forming machine of the embodiment of the present application;

[0023] Figure 3 is the top view structural schematic diagram of the gantry type punching machine of the embodiment of the present application;

[0024] Figure 4 is the structural schematic diagram of the cooling plate sheet leveling machine of the embodiment of the present application;

[0025] Figure 5 is the structural schematic diagram of the high-precision shearing and sheet combining machine of the embodiment of the present application;

[0026] Figure 6 is the structural schematic diagram of the double-head spot welding machine of the embodiment of the present application;

[0027] Figure 7 is the structural schematic diagram of the long-side double-head seam welding machine of the embodiment of the present application;

[0028] Figure 8 is the structural schematic diagram of the long-side double-head longitudinal shearing machine of the embodiment of the present application;

[0029] Figure 9 is the structural schematic diagram of the automatic sheet coding machine of the embodiment of the present application;

[0030] Figure 10 is the structural schematic diagram of the conveying roller way of the embodiment of the present application;

[0031] The figure is marked as follows: decoiler 1.1, pressing platform 1.2, leveling feeding device 1.3, encoder detection device 1.4, fixed frame 1.5, oil pressure forming machine 2.1, forming die 2.2, die changing frame 2.3, auxiliary material rack 3.1, oil press 3.2, cutting die 3.3, leveling frame 4.1, leveling roller 4.2, driving mechanism one 4.3, frame assembly one 5.1, gripper transfer mechanism one 5.2, gripper lifting mechanism one 5.3, sheet combining gripper 5.4, sheet combining rack 5.5, frame one 5.5.1, cross beam 5.5.2, guide mechanism 5.5.3, material pushing trolley 5.5.4, spot welding body 6.1, spot welding power supply 6.2, pressing head 6.3, end positioning mechanism 6.4, seam welding body 7.1, pressing head 7.2, seam welding head 7.3, welding wheel driving mechanism 7.4, seam welding power supply 7.5, machine base 8.1, longitudinal shear 8.2, cutting knife 8.3, driving mechanism two 8.4, frame assembly two 9.1, gripper transfer mechanism two 9.2, gripper lifting mechanism two 9.3, gripper overturning mechanism 9.4, gripper 9.5, material receiving rack 9.6, material taking rack 9.7, frame two 10.1, conveying roller 10.2, side leaning roller 10.3, pressing mechanism 10.4, driving mechanism three 10.5. DETAILED DESCRIPTION

[0032] The application is further described in detail by the following examples.

[0033] An automatic production line for plate heat exchanger plates comprises an NC numerical control leveling feeding three-in-one feeding machine, a stamping forming machine, a gantry type punching and cutting machine, a cooling plate leveling machine, a high-precision shearing and combining machine, a double-head spot welding machine, a long-side double-head seam welding machine, a long-side double-head longitudinal shearing machine and an automatic sheet stacking machine arranged in sequence and connected by conveying rollers; the NC numerical control leveling feeding three-in-one feeding machine is used for automatic feeding of a steel coil, leveling of the plates and servo feeding in the stamping forming process of the plate heat exchanger plates; the stamping forming machine performs flow channel stamping forming on the leveled plates by a hydraulic method, and simultaneously stamps two plates; the gantry type punching and cutting machine performs plate cutting by a hydraulic method, and also simultaneously cuts two plates; the cooling plate leveling machine is used for leveling two plates; the high-precision shearing and combining machine is used for accurate size cutting of a single plate, and is used for compensating for the precision error of the NC numerical control leveling feeding three-in-one feeding machine; the high-precision shearing and combining machine can combine two single plates to form a plate group; the double-head spot welding machine is used for long-side intermittent spot welding of the combined plates, so that the two plates become a whole, and prepares for long-side seam welding; the long-side double-head seam welding machine is used for seam welding of the two long sides of the plates after spot welding; the long-side double-head longitudinal shearing machine is used for cutting of the long sides of the workpieces; and the automatic sheet stacking machine adopts a frame trolley, and quickly stacks the welded plates by a gripper.

[0034] The conveying roller table adjusts the conveying speed and interval of the sheet according to the production cycle of each station, so that the production line can continuously produce.

[0035] Referring to the drawings Figure 1 The NC numerical control leveling and feeding three-in-one feeder comprises two uncoilers 1.1, two sets of pressing platforms 1.2, a leveling and feeding device 1.3, an encoder detection device 1.4 and a fixed rack 1.5. The two uncoilers 1.1 are installed at the front end of the conveying roller table and are matched with one set of pressing platforms 1.2 respectively. The two uncoilers 1.1 are respectively installed with a coil. The pressing platforms 1.2 cut the head of the coil to be neat for butt joint of new and old coils. The leveling and feeding device 1.3 is arranged behind the uncoiler 1.1 and is used for leveling the coil into a sheet and servo feeding. The leveling and feeding device 1.3 is provided with two conveying roller tables which are matched with the two uncoilers 1.1 respectively and convey the leveled sheet. The fixed rack 1.5 is the basis of the leveling and feeding device. The encoder detection device 1.4 is used for feeding back the feeding length to ensure the feeding accuracy. The above configuration can ensure simultaneous stamping of positive and negative sheet types in the subsequent process and save the stamping cycle.

[0036] Referring to the drawings Figure 2 The stamping forming machine comprises an oil hydraulic forming machine 2.1 and a forming die 2.2. The forming die 2.2 is installed on the oil hydraulic forming machine 2.1. The forming die 2.2 comprises positive and negative sets of die cores which are installed on a die plate. The positive and negative sets of die cores are respectively matched with the sheets conveyed on the two conveying roller tables and are respectively subjected to positive and negative stamping to stamp out positive and negative sheets. The forming die 2.2 is provided with a die changing rack 2.3 at the side. The forming die 2.2 can be slid onto the die changing rack 2.3 for quick die changing. The stamping forming machine is connected with the NC numerical control leveling and feeding three-in-one feeder. The production line adopts the stamping forming mode, has high forming efficiency, stable product quality and good consistency.

[0037] Referring to the drawings Figure 3 The gantry type punching machine comprises an oil hydraulic machine 3.2, a cutting die 3.3 and an auxiliary material rack 3.1. The cutting die 3.3 is arranged on the oil hydraulic machine 3.2 and is matched with the positive and negative sheets punched on the two conveying roller tables. The auxiliary material racks 3.1 are arranged on the two conveying roller tables in front of the cutting die 3.3. The stamping forming single sheet has insufficient overall rigidity and needs to be supported by the auxiliary material rack 3.1. The auxiliary material rack 3.1 enters the oil hydraulic machine 3.2. The oil hydraulic machine 3.2 is provided with the cutting die 3.3 and cuts the sheet.

[0038] Referring to the drawings Figure 4The cooling sheet straightener comprises a straightener frame 4.1, a straightener roller 4.2 and a driving mechanism 4.3, the straightener frame 4.1 is a base component, the straightener roller 4.2 and the driving mechanism 4.3 are both mounted on the straightener frame 4.1, the driving mechanism 4.3 is connected with the straightener roller through a chain, and the outer edge of the straightener roller 4.2 is rubberized; the driving mechanism 4.3 is powered by a variable frequency motor, rotates the straightener roller 4.2 through the chain, and two sets of straightener rollers 4.2 respectively complete the straightening of the single sheet after being cut on the two conveying roller tracks, the outer edge of the straightener roller 4.2 is rubberized to protect the surface of the single sheet from being scratched.

[0039] Referring to the drawings Figure 5 The high-precision cutting and splicing machine comprises a precision cutting machine and a splicing machine arranged on the conveying roller track, the precision cutting machine is consistent with the gantry die cutting machine, and the die is a cutting die; the splicing machine comprises a frame assembly 5.1, a gripper transfer mechanism 5.2, a gripper lifting mechanism 5.3, a splicing gripper 5.4 and a splicing rack 5.5, the frame assembly 5.1 is horizontally arranged above the splicing rack 5.5, the gripper transfer mechanism 5.2 is mounted on the frame assembly 5.1 and is provided with a horizontal linear guide rail, the gripper transfer mechanism 5.2 is drivingly connected with a transfer cylinder, and the transfer cylinder is extended and retracted to drive the gripper transfer mechanism 5.2 to move; the gripper lifting mechanism 5.3 is mounted on the side surface of the gripper transfer mechanism 5.2 and is provided with a vertical linear guide rail, the splicing gripper 5.4 is a sponge suction cup gripper, is rigidly connected with the gripper lifting mechanism 5.3, the gripper lifting mechanism 5.3 is drivingly connected with a lifting cylinder, the lifting cylinder is extended and retracted to drive the splicing gripper 5.4 to move up and down, the splicing gripper 5.4 is used for grabbing the positive sheet on the conveying roller track, and the positive sheet is placed on the negative sheet to splice the two sheets through cooperation with the gripper transfer mechanism 5.2; the splicing rack 5.5 comprises a rack body 5.5.1, a cross beam 5.5.2, a guide mechanism 5.5.3 and a material pushing trolley 5.5.4, the rack body 5.5.1 is a base of the splicing rack 5.5, the cross beam 5.5.2 is mounted on the rack body 5.5.1 and is provided with a linear guide rail, the cross beam 5.5.2 is clamped and released through extension and retraction of a cross beam cylinder; the guide mechanism 5.5.3 is mounted on the cross beam 5.5.2 and is used for aligning the positive sheet and the negative sheet in the width direction during splicing; the material pushing trolley 5.5.4 is mounted on the rack body 5.5.1 and is provided with a linear guide rail, and is driven by a servo motor to align the positive sheet and the negative sheet in the length direction.

[0040] Referring to the drawings Figure 6The double-head tack welder comprises a tack welding body 6.1, a pressing head 6.3, a tack welding power supply 6.2 and an end positioning mechanism 6.4, the tack welding body 6.1 is the base of the device, the pressing head 6.3, the tack welding power supply 6.2 and the end positioning mechanism 6.4 are all installed on the tack welding body 6.1, the end positioning mechanism 6.4 cooperates with the pusher trolley 5.5.4 on the sheet assembling rack 5.5 of the sheet assembling machine to realize the length direction alignment of the positive and negative sheets, facilitating the subsequent tack welding work; the positive and negative single sheets are tack welded along the long edges to form an integral whole, and the heat exchanger sheet meets the requirements of seam welding.

[0041] Referring to the drawings Figure 7 The long-edge double-head seam welder comprises a seam welding body 7.1, a pressing head 7.2, a seam welding head 7.3, a welding wheel driving mechanism 7.4 and a seam welding power supply 7.5, the welding body 7.1 is the base of the device, the pressing head 7.2 and the welding wheel driving mechanism 7.4 are all installed on the seam welding body 7.1, the seam welding head 7.3 is rigidly connected with the pressing head 7.2, the pressing head 7.2 is used to press and release the workpiece, the seam welding power supply 7.5 is an inverter AC system, which provides power for the long-edge double-head seam welder, the control of various welding parameters is more accurate and stable, which is suitable for seam welding and ensures the welding quality.

[0042] Referring to the drawings Figure 8 The long-edge double-head longitudinal shearing machine comprises a machine base 8.1, longitudinal shearing knives 8.2, cutting knives 8.3 and a driving mechanism two 8.4, the machine base 8.1 is the base of the device, the longitudinal shearing knives 8.2, the cutting knives 8.3 and the driving mechanism two 8.4 are all installed on the machine base 8.1; the driving mechanism two 8.4 is powered by a variable frequency motor, and drives the longitudinal shearing knives 8.2 and the cutting knives 8.3 to rotate and cut the material, and the longitudinal shearing knives 8.2 and the cutting knives 8.3 can cope with the cutting work of bidirectional stainless steel. The long-edge double-head longitudinal shearing machine is used for cutting the long edge of the workpiece to ensure the whole width and facilitate the subsequent sheet assembly.

[0043] Referring to the drawings Figure 9The automatic chip machine comprises a second gantry assembly 9.1, a second gripper transfer mechanism 9.2, a second gripper lifting mechanism 9.3, a gripper overturning mechanism 9.4, a gripper 9.5, a receiving rack 9.6 and a taking rack 9.7. The second gantry assembly 9.1 is arranged above the taking rack 9.7. The second gripper transfer mechanism 9.2 is installed on the beam of the second gantry assembly 9.1 and is provided with horizontal rails. The second gripper transfer mechanism 9.2 is driven by a second servo motor to drive the second gripper lifting mechanism 9.3. The second gripper lifting mechanism 9.3 is installed on the side of the second gripper transfer mechanism 9.2 and is provided with vertical rails. The second gripper lifting mechanism 9.3 is driven by a third servo motor to drive the gripper overturning mechanism 9.4 to lift. The gripper overturning mechanism 9.4 is rigidly connected with the second gripper lifting mechanism 9.3 and is driven by a fourth servo motor to overturn the gripper 9.5. The gripper 9.5 is a sponge suction cup gripper and is rigidly connected with the gripper overturning mechanism 9.4. The receiving rack 9.6 is arranged obliquely to ensure that the workpiece is not tilted when the workpiece is fed. After the feeding is completed, an operator manually completes the assembly of the workpiece on the receiving rack. Then, the whole workpiece is hoisted to a subsequent work station. Thus, the single-piece machining process is completed.

[0044] Referring to the drawings Figure 10 The conveying roller table comprises a second frame body 10.1, conveying rollers 10.2, side rollers 10.3, a pressing mechanism 10.4 and a driving mechanism 10.5. The second frame body 10.1 is the main body of the conveying roller table. The conveying rollers 10.2, the side rollers 10.3, the pressing mechanism 10.4 and the driving mechanism 10.5 are all installed on the second frame body 10.1. When the workpiece is conveyed, the pressing mechanism 10.4 presses the workpiece onto the conveying rollers 10.2. The driving mechanism 10.5 is driven by a fifth servo motor to drive the conveying rollers 10.2 to rotate, thereby driving the workpiece to advance and retreat. Before the sheet combining process, the conveying roller table is a double roller table. After the sheet combining process, the conveying roller table is a single roller table.

[0045] The automatic production method of the plate heat exchanger plate uses the automatic production line of the plate heat exchanger plate, and the steps are as follows.

[0046] The NC numerical control leveling and feeding three-in-one feeding machine is used for automatically feeding, leveling and servo feeding of the steel coil in the plate heat exchanger plate stamping forming process. The stamping forming machine performs flow channel stamping forming on the leveled plate through a hydraulic mode, and simultaneously stamps two positive and negative plates at a time. The gantry type punching machine performs plate cutting through a hydraulic mode. The cooled plate leveling machine is used for leveling two plates. The high-precision shearing and combining machine is used for accurately cutting a single plate. The high-precision shearing and combining machine combines the positive and negative single plates together to form a plate group. The double-head spot welding machine is used for intermittently spot welding the long edges of the combined plate, so that the positive and negative plates become a whole. The long-edge double-head seam welding machine is used for seam welding the two long edges of the plate after spot welding. The long-edge double-head longitudinal shearing machine is used for cutting the long edge of the workpiece. The automatic chip machine adopts a gantry trolley and quickly codes the welded plate through a gripper.

[0047] The application realizes automatic production of plate heat exchanger plates, including coiled material, automatic stamping forming, fixed-length cutting, high-precision shearing, leveling, plate joining, spot welding, long-side seam welding, long-side shearing and automatic plate stacking. The conveying rollerways between the stations are matched with each other to realize full automation of the above processes.

[0048] The NC numerical control leveling feeding three-in-one feeding machine is provided with two uncoilers and is installed at the front end of the straightening line. Two sets of manual welding platforms (pressing platforms) are arranged, which can cut the material head neatly and are used for butt joint of new material coils. The leveling feeding device is connected at the rear end, which is used for leveling and servo feeding of the material coil. The encoder detection device is used for feeding length feedback. The fixed frame is the main body of the leveling feeding machine.

[0049] The positive and negative sets of mold cores of the stamping forming machine are installed on a mold plate, and a mold changing frame is further arranged for quick mold changing. The gantry type punching machine includes a hydraulic press, a cutting die and an auxiliary material rack. The cooling plate leveling machine includes a leveling frame, leveling rollers and a driving mechanism one. The leveling rollers and the driving mechanism one are both installed on the leveling frame, and the leveling rollers are rubberized.

[0050] The high-precision shearing and plate joining machine includes a precision shearing machine and a plate joining machine. The precision shearing machine is consistent with the above-mentioned gantry type punching machine, and the die is different, which will not be described here. The plate joining machine includes a frame assembly one, a gripper moving mechanism one, a gripper lifting mechanism one, a plate joining gripper and a plate joining rack. The frame assembly one is horizontally arranged above the plate joining rack. The gripper moving mechanism one is installed on the beam of the frame assembly one and is provided with a linear guide rail. The gripper moving mechanism one is driven to move by a moving cylinder. The gripper lifting mechanism one is installed on the side of the gripper moving mechanism one and is provided with a linear guide rail. The gripper lifting mechanism one is driven to move up and down by a lifting cylinder. The plate joining gripper is a sponge suction gripper and is rigidly connected with the gripper lifting mechanism one. The plate joining rack includes a frame one, a beam, a guide mechanism and a material pushing trolley. The frame one is the base of the plate joining rack. The beam is installed on the frame one and is provided with a linear guide rail. The beam is driven to clamp and release by a beam cylinder. The guide mechanism is installed on the beam and is used for aligning the two plates in the width direction during plate joining. The material pushing trolley is installed on the frame one and is driven by a servo motor one. The material pushing trolley is used for aligning the two plates in the length direction.

[0051] The double-head spot welding machine includes a spot welding body, a pressing head, a spot welding power supply and an end positioning mechanism. The spot welding body is the base of the equipment. The pressing head, the spot welding power supply and the end positioning mechanism are all installed on the spot welding body. The end positioning mechanism cooperates with the plate aligning trolley on the previous plate joining rack to align the two plates in the length direction, which is convenient for subsequent spot welding work.

[0052] The long-side double-head seam welder comprises a seam welding body, a pressing head, a seam welding head, a welding wheel driving mechanism and a seam welding power source, etc., the welding body is the equipment base, the pressing head, the welding wheel driving mechanism and the welding power source, etc. are installed on the seam welding body, and the seam welding head is rigidly connected with the pressing head.

[0053] The long-side double-head longitudinal shearing machine comprises a machine base, longitudinal shearing knives, cutting knives and a driving mechanism two, the machine base is the equipment base, the longitudinal shearing knives, the cutting knives and the driving mechanism two are installed on the machine base.

[0054] The automatic chip coder comprises a frame assembly two, a gripper moving and carrying mechanism two, a gripper lifting mechanism two, a gripper overturning mechanism, a gripper, a receiving rack and a taking rack, the frame assembly two is horizontally arranged above the taking rack, the gripper moving and carrying mechanism two is installed on the cross beam of the frame assembly two and is configured with a steel rail and is driven by a servo motor two to drive the gripper lifting mechanism two to act; the gripper lifting mechanism two is installed on the side surface of the gripper moving and carrying mechanism two and is configured with a linear guide rail and is driven by a servo motor three to drive the gripper overturning mechanism to lift, the gripper overturning mechanism is rigidly connected with the gripper lifting mechanism two and is driven by a servo motor four to overturn the gripper; the gripper is a sponge suction cup gripper and is rigidly connected with the gripper overturning mechanism; the receiving rack is arranged obliquely to ensure that the material sheet will not fall down when the material sheet is coded.

[0055] The conveying roller table comprises a frame two, conveying rollers, side leaning rollers, a pressing mechanism and a driving mechanism three, the frame two is the main body of the conveying roller table, the conveying rollers, the side leaning rollers, the pressing mechanism and the driving mechanism three are all installed on the frame two, the pressing mechanism presses the workpiece onto the conveying rollers when the workpiece is conveyed, the driving mechanism three drives the conveying rollers to rotate through a chain, thereby driving the workpiece to advance and retreat.

Claims

1. An automated production line for plate heat exchanger plates, characterized in that: The system includes a CNC leveling and feeding three-in-one feeder, a stamping and forming machine, a gantry punching and cutting machine, a cooling plate leveling machine, a high-precision shearing and assembling machine, a double-head spot welding machine, a long-side double-head seam welding machine, a long-side double-head slitting machine, and an automatic sheet stacking machine, arranged sequentially and connected by conveyor rollers. The CNC leveling and feeding three-in-one feeder is used for automatic feeding, leveling, and servo feeding of steel coils during the plate heat exchanger plate stamping and forming process. The stamping and forming machine uses hydraulic pressure to perform flow channel stamping and forming on the leveled plates, simultaneously stamping two plates of opposite sides. The gantry punching and cutting machine uses hydraulic pressure to cut the plates, also employing a dual-mold design, cutting two plates of opposite sides simultaneously. The cooling plate leveling machine is used to level two plates; the high-precision shearing and joining machine is used to precisely cut single pieces to size, compensating for the accuracy error of the NC leveling and feeding three-in-one feeder; the high-precision shearing and joining machine can join two single pieces of opposite sides together to form a piece group; the double-head spot welding machine is used to intermittently spot weld the long side after the plates are joined, making the two pieces of opposite sides a whole, preparing for long side seam welding; the long side double-head seam welding machine is used to seam weld the two long sides of the plate after spot welding; the long side double-head slitting machine is used to cut the long side of the workpiece; the automatic piece stacking machine uses a truss trolley to quickly stack the welded plates using grippers. The NC leveling and feeding three-in-one feeder includes two uncoilers (1.1), two sets of clamping platforms (1.2), a leveling and feeding device (1.3), an encoder detection device (1.4), and a fixed frame (1.5). The two uncoilers (1.1) are installed at the front end of the conveyor rollers and are matched with a set of clamping platforms (1.2) respectively. The two uncoilers (1.1) are respectively installed with their own material rolls. The clamping platforms (1.2) trim the material heads of the material rolls neatly for connecting new and old material rolls. The leveling and feeding device (1.3) is set after the uncoilers (1.1) to level the material rolls into plates and feed them by servo. The leveling and feeding device (1.3) is equipped with two conveyor rollers, which are matched with the two uncoilers (1.1) respectively and convey the leveled plates. The fixed frame (1.5) is the foundation of the leveling and feeding device. The encoder detection device (1.4) is used to provide feedback on the feeding length to ensure feeding accuracy. The high-precision shearing and assembling machine includes a precision shearing machine and an assembling machine mounted on a conveyor roller conveyor. The precision shearing machine has the same structure as the gantry punching machine, and the mold is a shearing mold. The assembling machine includes a truss assembly (5.1), a gripper transfer mechanism (5.2), a gripper lifting mechanism (5.3), an assembling gripper (5.4), and an assembling rack (5.5). The truss assembly (5.1) spans across the assembling rack (5.5), and the gripper transfer mechanism (5.2) is installed... A horizontal linear guide rail is configured on the truss assembly (5.1). The gripper transfer mechanism (5.2) is driven by the transfer cylinder. The extension and retraction of the transfer cylinder drives the gripper transfer mechanism (5.2) to move. The gripper lifting mechanism (5.3) is installed on the side of the gripper transfer mechanism (5.2) and configured with a vertical linear guide rail. The assembly gripper (5.4) is a sponge suction cup gripper, which is rigidly connected to the gripper lifting mechanism (5.3). The gripper lifting mechanism (5.3) is connected to the lifting mechanism. The lowering cylinder drives the connection, and the extension and retraction of the lifting cylinder drives the piecing gripper (5.4) to move up and down, grabbing the positive plate on the conveyor roller, and placing the positive plate on the negative plate in cooperation with the gripper transfer mechanism (5.2) to assemble the plate; the piecing rack (5.5) includes a frame (5.5.1), a crossbeam (5.5.2), a guide mechanism (5.5.3) and a pusher trolley (5.5.4), with the frame (5.5.1) serving as the foundation of the piecing rack (5.5). The crossbeam (5.5.2) is installed on the frame (5.5.1) and equipped with a linear guide rail. The crossbeam (5.5.2) is clamped and released by the extension and retraction of the crossbeam cylinder. The guide mechanism (5.5.3) is installed on the crossbeam (5.5.2) and is used to align the width direction of the front and back plates when the plates are assembled. The pusher trolley (5.5.4) is installed on the frame (5.5.1) and equipped with a linear guide rail. It is driven by a servo motor and is used to align the length direction of the front and back plates.

2. The automatic production line for plate heat exchanger plates according to claim 1, characterized in that: The conveyor rollers adjust the conveying speed and interval of the plates according to the production rhythm of each station, so that the production line can produce continuously.

3. The automatic production line for plate heat exchanger plates according to claim 1, characterized in that: The stamping forming machine includes a hydraulic forming machine (2.1) and a forming mold (2.2). The forming mold (2.2) is installed on the hydraulic forming machine (2.1). The forming mold (2.2) includes two sets of mold cores, one for the front and one for the back, which are mounted on a template. The two sets of mold cores are matched with the plates conveyed on the two conveyor rollers and are stamped in the front and back respectively to produce a positive plate and a negative plate. A mold changing frame (2.3) is provided on the side of the forming mold (2.2). The forming mold (2.2) can slide onto the mold changing frame (2.3) for quick mold changing.

4. The automatic production line for plate heat exchanger plates according to claim 3, characterized in that: The gantry punching machine includes a hydraulic press (3.2), a cutting die (3.3), and an auxiliary material rack (3.1). The cutting die (3.3) is set on the hydraulic press (3.2) to match the punched positive and negative plates on the two conveyor rollers. The auxiliary material rack (3.1) is set on the two conveyor rollers in front of the cutting die (3.3).

5. The automatic production line for plate heat exchanger plates according to claim 1, characterized in that: The cooling plate leveling machine includes a leveling frame (4.1), a leveling roller (4.2), and a drive mechanism (4.3). The leveling frame (4.1) is the basic component. The leveling roller (4.2) and the drive mechanism (4.3) are both installed on the leveling frame (4.1). The drive mechanism (4.3) is connected to the leveling roller by a chain. The outer edge of the leveling roller (4.2) is coated with rubber. The drive mechanism (4.3) is powered by a variable frequency motor and drives the leveling roller (4.2) to rotate through the chain. The two sets of leveling rollers (4.2) respectively complete the leveling of the single plates cut on the two conveyor roller tracks. The outer edge of the leveling roller (4.2) is coated with rubber.

6. The automatic production line for plate heat exchanger plates according to claim 1, characterized in that: The dual-head spot welding machine includes a spot welding body (6.1), a pressure head (6.3), a spot welding power supply (6.2), and an end positioning mechanism (6.4). The spot welding body (6.1) is the foundation of the equipment. The pressure head (6.3), the spot welding power supply (6.2), and the end positioning mechanism (6.4) are all installed on the spot welding body (6.1). The end positioning mechanism (6.4) cooperates with the pusher trolley (5.5.4) on the sheet assembly rack (5.5) of the sheet assembly machine to achieve alignment of the front and back sheet length directions.

7. An automated production line for plate heat exchanger plates according to claim 1 or 2, characterized in that: The automatic chip encoder includes a second truss assembly (9.1), a second gripper transfer mechanism (9.2), a second gripper lifting mechanism (9.3), a gripper flipping mechanism (9.4), a gripper (9.5), a receiving rack (9.6), and a picking rack (9.7). The second truss assembly (9.1) spans across the picking rack (9.7). The second gripper transfer mechanism (9.2) is installed on the crossbeam of the second truss assembly (9.1) and equipped with a horizontal steel rail. It is driven by a second servo motor to drive the second gripper lifting mechanism (9.3). The second gripper lifting mechanism (9.3) is installed on the side of the second gripper transfer mechanism (9.2) and equipped with a vertical guide rail. It is driven by the third servo motor to lift the gripper flipping mechanism (9.4). The gripper flipping mechanism (9.4) is rigidly connected to the second gripper lifting mechanism (9.3). It is driven by the fourth servo motor to flip the gripper (9.5). The gripper (9.5) is a sponge suction cup gripper, which is rigidly connected to the gripper flipping mechanism (9.4). The receiving rack (9.6) is arranged at an angle to ensure that the material will not tip over when stacking.

8. An automated production method for plate heat exchanger plates, characterized in that... The automatic production line for plate heat exchanger plates according to any one of claims 1-7 comprises the following steps: the NC leveling and feeding three-in-one feeder is used for automatic feeding of steel coils, leveling into plates, and servo feeding during the plate heat exchanger plate stamping process; the stamping forming machine performs flow channel stamping forming on the leveled plates using hydraulic means, simultaneously stamping two plates in opposite directions at one time; the gantry punching machine performs plate cutting using hydraulic means; and the cooling plate leveling machine is used to cut the two plates... The high-precision shearing and assembling machine is used to precisely cut single pieces to size; the high-precision shearing and assembling machine combines two single pieces of opposite sides together to form a piece group; the double-head spot welding machine is used to intermittently spot weld the long sides of the assembled plates, making the two pieces of opposite sides a whole; the long-side double-head seam welding machine is used to seam weld the two long sides of the plate after spot welding; the long-side double-head slitting machine is used to cut the long sides of the workpiece; the automatic piece stacking machine uses a truss trolley to quickly stack the welded plates using grippers.

Images