CN1231307C - Continuous steel belt punching production line - Google Patents

Abstract

The present invention discloses a production line for continuously punching steel belts, which comprises an uncoiler for uncoiling, a straightening and leveling machine for straightening and leveling steel belts, a material storing device arranged on the back side of the straightening and leveling machine, a digital control feeding mechanism connected with the storing device, a pressing machine, a material stripping-off device fixed on the side surface of a discharging part of the pressing machine, a laser distance measuring device arranged on the material storing device, two adjusting brackets respectively arranged on the tail part of the straightening and leveling machine and a feeding end of the digital control feeding mechanism and an electrical control device for controlling a servo of the production line for feeding and continuously punching. Automatic, continuous and high speed punching operation is achieved through a PLC programmable controller in the electrical control device, and high precision and long distance feeding are also achieved. The present invention not only has high productive efficiency, but also has high product process precision, and is a set of high speed, high efficiency, high accuracy and full automatic punching production line.

Description

Lines for continuous stamping of steel strips

technical field

The invention relates to a stamping production line, in particular to a production line for continuous stamping of steel strips.

Background technique

At present, the ultra-narrow steel strip used in the production of plastic-steel doors and windows has a thickness of 2.3-3.5mm and a width of 10-20mm, and the processing of this ultra-narrow steel strip generally adopts sub-processing, that is, blanking and leveling Straightening, line drawing, and punching, multiple holes are also processed step by step, so it is difficult to ensure the position accuracy between holes, and the production efficiency is extremely low.

The fastest stamping frequency of the existing continuous stamping equipment is 20 times/min, so it is urgent to provide high-speed continuous stamping equipment.

Contents of the invention

The problem to be solved by the present invention is to provide a production line for continuous stamping of steel strips, which can not only improve the processing accuracy of the produced products, but also greatly improve the production efficiency.

The present invention achieves the above-mentioned purpose by adopting the following technical solutions: a production line for continuous stamping of steel strips, which includes sequentially arranged: an uncoiler for unrolling steel strip coils, a machine for straightening and straightening steel strips Straightening and leveling machine, the material storage device arranged behind the straightening and leveling machine, the numerical control feeding mechanism arranged next to the storage device, the press machine arranged next to it, the throwing device fixed on the discharge side of the press machine, the production line It also includes an electrical control device for controlling servo feeding and continuous stamping of the production line.

The electrical control device includes: a PLC programmable controller, a press number adjustment system for press speed regulation, a die height regulator, an AC digital servo control system, and an automatic speed regulation system for straightening and leveling machines. Inverter, and electric control cabinet, main control station.

The uncoiler is a double-head uncoiler, which includes: a fuselage, on which two hollow shafts are arranged, and a tensioning device for tightening the inner hole of the steel strip reel is arranged on the hollow shafts, Two pneumatic clamping devices are arranged on the fuselage on the side of the tensioning device.

The upper part of the fuselage of the uncoiler is equipped with a motor that is convenient for automatic feeding and provides power to the hollow shaft of the uncoiler. The two output shafts of the motor are directly connected to the reduction device and then the power source is sent to the hollow shaft through the transmission device; A pneumatic friction device is also provided between the fuselage and the hollow shaft. The pneumatic friction device includes a friction disc fixed on the hollow shaft and a pneumatic tensioning device fixed on the fuselage. The pneumatic friction device is used to make the The coil forms a certain gravitational force between the uncoiler and the straightening and leveling machine.

The tensioning device is a hydraulic tensioning device, which includes: a piston shaft located in the cavity of the hollow shaft, a piston connected to one end of the piston shaft, a piston cylinder arranged outside the piston and matched with the piston, and a piston shaft connected to the piston shaft. The tensioning inner sleeve connected to the end of the other end extending out of the hollow shaft, the tensioning outer sleeve arranged outside the tensioning inner sleeve, and the two ends are respectively hinged on the outer surface of the tensioning inner sleeve and the inner surface of the tensioning outer sleeve with multiple hinges Rod; the tension inner sleeve is connected with the hollow shaft through a key, and slides along the key axis on the hollow shaft.

The pneumatic pressing device includes: a cylinder, a connecting rod mechanism and a pressing wheel, the connecting rod mechanism includes a support arm fixed on the fuselage, the front end of the support arm is provided with a rotatable cantilever shaft, and the cantilever shaft of the cantilever shaft The end of the swing arm is fixedly connected with the rear part of the swing arm through a key, and the swing arm is divided into two parts, the front part and the rear part. The front part accounts for most of the length of the whole swing arm. Connect the front end of the push rod of the cylinder; the cylinder pushes the tail end of the swing arm to make the swing arm rotate along the cantilever shaft at the front end of the support arm, and the pressure wheel at the front end of the swing arm presses the steel belt downward.

The straightening and leveling machine includes: the straightening device and the leveling device are arranged on the machine base; rollers, a pair of lead rollers, and a set of straightening rollers; the straightening rollers and the straightening rollers are arranged perpendicularly to each other.

The numerical control feeding mechanism includes a servo motor, and the motor drives a pair of feeding rollers to rotate and feed through the main transmission mechanism, and an adjusting cylinder for controlling the lifting and falling of the upper feeding roller is arranged on the frame.

The numerical control feeding mechanism further includes an oiling device arranged behind the feeding roller, the oiling device includes: a pair of oiling rollers and an oil supply device, and the oiling roller includes: a hollow shaft and a There are many small holes on the circumferential surface of the hollow shaft and the outer circle of the hollow shaft, and a hole for injecting lubricating oil is opened at one end of the hollow shaft, and the surface of the oiling roller is covered with a layer of felt. The hollow shaft ends of two adjacent oil coating rollers are provided with springs that make the outer surfaces of the two oil coating rollers close to each other.

The material storage device is a storage pit for the strip material to hang down naturally or a storage rack for the strip material to bend upward.

The press is a two-point closed press, which includes: a closed body, a DC motor is arranged on the upper part of the body, a stepless speed regulating device is connected to the motor, and the output terminal of the motor is connected to a two-stage reduction mechanism , and a pair of crank connecting rod mechanism, the connecting rod is connected and drives the slider; a balancer is also arranged above the slider; the press also includes a lubrication system and an air pipeline system.

The throwing device includes: a motor, a deceleration device, a transmission device, a set of upper throwing rollers, a set of lower throwing rollers, a cylinder, a frame, and an upper throwing roller bracket, and the cylinder is fixed on the top of the frame. plane, the push-pull rod of the cylinder is fixed to the upper throwing roller support, the motor is arranged on the upper plane of the upper throwing roller support, and the upper throwing roller is pivoted on the upper throwing roller support in a straight line. The motor is connected to the deceleration device and drives the upper throwing roller to rotate through the transmission device. The lower throwing roller is fixed on the lower part of the frame and is located below the upper throwing roller; the push-pull rod of the cylinder drives the upper throwing roller The bracket moves up and down, thereby driving the upper throwing roller to lift up and down.

Adjustment brackets are respectively provided at the rear of the straightening and leveling machine and at the feeding end of the CNC feeding mechanism; the adjustment brackets include: an arc-shaped bracket whose upper surface is curved upwards, and an arc-shaped bracket is also provided on the upper surface of the bracket. Multiple carrier rollers.

The adjustment bracket is further provided with a material tail detection device, which includes a detection switch. When no material signal is detected, it will be fed back to the PLC controller, and the PLC controller will send a command signal to stop and power off.

The automatic production line further includes a receiving device arranged behind the throwing device. The storage device is also provided with a laser distance measuring device.

Due to the adoption of the above structure, continuous and high-speed stamping can be realized through the electronic control device, and high-precision and large-step feeding can be realized. The reciprocating winding ultra-narrow steel strip is opened by the uncoiler. After the steel strip is straightened and leveled by the straightening and leveling machine, it is sent to the storage device for storage. ±0.15mm/step length, the feeding step distance can reach 2200mm, and the feeding frequency can reach 35-60 times/min; at the same time, a laser distance measuring device is installed at the storage device. When the storage is too much or too little, the laser distance measurement The device transmits the signal to the PLC controller, and the PLC feeds back the electrical signal of the frequency converter of the straightening and leveling machine after processing and calculation, so as to adjust the speed of the frequency conversion motor of the straightening and leveling machine. Through the PLC programmable controller, the stamping dies of the processed parts are programmed, debugged and stored in the PLC, and the stored programs are called out according to different die numbers, and the automatic processing is realized through the material level detection device. At the same time, there is also a man-machine working interface display screen, which shows the running status of the whole production line, various parameters: part number, mold number, fixed length, mold loading height, running speed, count of processed parts, etc., and fault diagnosis information. Each single machine can be used independently. Manual adjustment, and each has an emergency stop function. The whole line is automatically detected, with error display and self-stop functions. Through the communication interface on the PLC control system, the whole line has the ability to exchange information with the upper computer, and can provide production status, various Processing parameters, fault diagnosis information and other production data, and can accept production control instructions sent by the control center.

There is a main control station on the whole line, on which the press and feeder can be controlled, and the operating status and fault alarm of each equipment can be indicated. At the same time, in order to facilitate the adjustment of each unit, a small control station is set on each unit to realize the independent manual adjustment of each unit. The operation operation mode is divided into automatic and adjustment, and the automatic operation mode is divided into single and continuous. There are two types; the adjustment operation mode is divided into inching and continuous.

Description of drawings

Fig. 1A is the structural layout schematic diagram of the production line that is used for steel strip continuous stamping of the present invention;

Fig. 1B is the top view arrangement diagram of the production line that is used for steel strip continuous stamping of the present invention;

Fig. 2 is the working principle figure of the production line that is used for steel strip continuous stamping of the present invention;

Fig. 3 A is the side structure schematic diagram of the uncoiler of the production line that is used for the continuous stamping of steel strip of the present invention;

Fig. 3 B is the longitudinal sectional structure schematic diagram of the uncoiler of the production line that is used for the continuous punching of steel strip of the present invention;

Fig. 4 is the structural representation of the straightening and leveling machine of the production line that is used for the continuous stamping of steel strip of the present invention;

Fig. 5 is a schematic diagram of the structure of the production line adjustment bracket for continuous stamping of steel strips according to the present invention;

Fig. 6A is the structure schematic diagram of the numerical control feeding device of the production line that is used for the steel strip continuous stamping of the present invention;

Fig. 6B is a B-B sectional view of Fig. 6A;

Fig. 7 is the structural schematic diagram of the production line press that is used for the continuous punching of steel strip of the present invention;

Fig. 8 is a schematic structural view of a throwing machine used in a production line for continuous stamping of steel strips according to the present invention.

The labels in the above drawings refer to:

Uncoiler 100 Body 101 Motor 102

Sprocket transmission device 103 hollow shaft 104 tensioning device 105

Piston shaft 1051 Piston cylinder 1052 Piston 1053

Tightening inner sleeve 1055 Tightening jacket 1056

Hinge rod 1057 Pneumatic friction device 106 Friction disc 1061

Pneumatic tensioning device 1062 Pneumatic compression device 108 Cylinder 1081

Link mechanism 1082 Press wheel 1083 Support arm 1084

Swing arm 1085 Cantilever shaft 1086

Straightening and leveling machine 200 Straightening device 201 Straightening device 202

Machine base 203 Frequency conversion motor 204 Transmission mechanism 205

Leading roller 206 Straightening roller 207 Leading roller 208

Leveling roller 209

Adjusting bracket 300 Bracket 301 Supporting roller 302

Storage device 400 Storage pit 401 Storage rack 401′

CNC feeding mechanism 500 Servo motor 501 Main transmission mechanism 502

Feeding roller 503 Upper feeding roller 5031 Lower feeding roller 5032

Regulating air 504 Frame 505 Oiling device 506

Oiling roller 5061 Hollow shaft 5062 Jacket 5063

Hole 5064 Hole 5065 Felt 5066

Spring 5067 Oil supply device 5068 Anti-retraction device 507

Press machine 600 Closed body 601 DC motor 602

Stepless speed regulating device 603 Speed reduction mechanism 604 Crank linkage mechanism 605

Connecting rod 606 Slider 607 Balancer 608

Throwing device 700

Motor 701 Transmission device 702 Upper throwing roller 703

Lower throwing roller 704 Cylinder 705 Upper throwing roller support 706

Reduction device 707 Frame 708 Electric control device 900

Material tail detection device 1000 Detection switch 1001 Material receiving device 1100

Detailed ways

Please refer to Fig. 1A, 1B, a kind of production line for the continuous stamping of steel strip according to the present invention is shown among the figure, it comprises sequence arrangement: be used for uncoiler 100 of opening steel strip coil, be used for leveling straightening After opening the straightening and leveling machine 200 of the steel strip, the storage device 400 arranged at the back of the straightening and leveling machine 200 is used to store enough strip material for the next step of feeding, and the numerical control feeding mechanism 500 is connected to the storage device 400 Arranged and fixed on the feed side of the subsequent press 600, the press 600 used for stamping steel strip forming, the throwing device 700 for throwing the processed workpiece is fixed on the discharge side of the press, The material receiving device 1100 is arranged after the throwing device, and the production line also includes an electrical control device 900 for controlling the servo feeding of the production line and continuous stamping; the tail detection device 1000 is further provided on the adjustment bracket, which includes a detection switch 1001, When a material-free signal is detected, it will be fed back to the PLC controller, and the PLC controller will issue a command signal to stop and power off.

Referring to Fig. 2, it is the working principle diagram of the production line that is used for the continuous stamping of steel strip of the present invention, and the action of whole production line is all completed by PLC controller operation, and PLC controller is connected with uncoiler, straightening and leveling machine, numerical control feeding material respectively. Mechanisms, presses, and throwing electromechanical connections. The control device also includes a press number adjustment system for press speed adjustment, a die height regulator, an AC digital servo control system, and an AC frequency converter for automatic speed adjustment of the straightening and leveling machine. By selecting different serial numbers of workpieces to be processed, the operating speed of the press is calculated, and the motor speed of the press is adjusted through the press number adjustment system for press speed regulation. Calculate a speed signal based on the number of press operations and the length of the workpiece to the inverter of the straightening and leveling machine to control the operation of the straightening and leveling machine; at the same time, there is an analog quantity detection switch in the material storage device to detect the storage status and convey After calculation by the PLC, the speed compensation signal obtained by the PLC is sent to the frequency converter to adjust the speed of the straightening and leveling machine; the PLC accurately calculates a speed signal based on the number of times the press runs and the length of the workpiece and sends it to the AC digital servo control system to control The CNC feeding mechanism feeds the material accurately. The whole production line can realize self-uncoiling, straightening and leveling, storage, servo feeding, continuous stamping and throwing through the PLC control system. The feeding step can reach 2000mm, and the feeding cycle can reach 35-60 times/min. The straightness accuracy can reach 0.2mm/m, and the feeding accuracy is ±0.15mm/step, thus realizing high-speed, high-precision, large-step, continuous stamping and processing of ultra-narrow steel strip.

Referring to Fig. 3 A, 3B, the uncoiler 100 among the figure is a double-head uncoiler, and it comprises fuselage 101, is convenient to lead material automatically, provides the motor 102 of unwinding mandrel with power to be located at the top of fuselage 101; The end output shaft is directly connected to the deceleration device, and drives two hollow shafts 104 through the sprocket transmission device 103; a tensioning device 105 for tightening the inner hole of the steel strip reel is provided outside the hollow shaft 104, and the tensioning device 105 is a hydraulic tensioning device, which includes: a piston shaft 1051 located in the cavity of the hollow shaft 104, a piston 1053 connected to one end of the piston shaft 1051, a piston cylinder 1052 arranged outside the piston and matched with the piston, and a piston shaft 1052 connected with the piston shaft. 1051 stretches out the tension inner sleeve 1055 connected to the other end of the hollow shaft 104, and the tension outer sleeve 1056 outside the tension inner sleeve 1055, and the two ends are respectively hinged on the outer surface of the tension inner sleeve 1055 and the tension outer sleeve 1056 A plurality of hinge rods 1057 on the inner surface; the tension inner sleeve 1055 is sleeved on the hollow shaft 104 and slides along the key axis on the hollow shaft 104 . A pneumatic friction device 106 is also provided between the fuselage 101 and the hollow shaft 104, and the pneumatic friction device 106 includes a friction disc 1061 fixed on the hollow shaft 104 and a pneumatic tensioning device 1062 fixed on the fuselage 101 , the pneumatic friction device 106 is used to make the coil form a certain attractive force between the uncoiler and the leveler. The uncoiler further includes two pneumatic pressing devices 108, the pneumatic pressing device 108 includes: a cylinder 1081, a connecting rod mechanism 1082 and a pressing wheel 1083, and the connecting rod mechanism includes two support arms 1084 fixed on the fuselage 101 Above, the front end of the support arm 1084 is provided with a rotatable cantilever shaft 1086, and the swing arm 1085 is placed horizontally with a large front end and a small rear end and is fixed on the cantilever shaft 1086. The front end of the push rod of the cylinder 1081 is directly connected to the swing The rear end of the arm 1085 and the front end of the swing arm 1085 are hinged to the pressing wheel 1083 . When in use, use the pneumatic pressing device 108 to compress the outer edge of the steel strip before uncoiling to prevent the steel strip from hurting people. A certain gravitational force is formed between the straightening and leveling machines after the uncoiler. The hydraulic tensioning device is used to tighten the inner hole of the reel.

Referring to Fig. 4, the straightening and leveling machine 200 of the present invention is shown in the figure, which includes: a straightening device 201 and a leveling device 202 are arranged on the base 203 left and right, two frequency conversion motors 204, through a gear transmission mechanism 205, driving a pair of lead rollers 206, a set of straightening rollers 207, a pair of lead rollers 208, and a set of straightening rollers 209 respectively.

Referring to Fig. 5, Fig. 1, this production line also comprises two adjustment brackets 300, and the adjustment brackets 300 are respectively arranged on the end of the straightening and leveling machine 200 and the feeding end of the numerical control feeding mechanism 500; The lower curved arc-shaped bracket 301 is provided with a plurality of rotatable support rollers 302 on the upper arc-shaped surface of the bracket 301 . The function of setting the adjustment bracket after the straightening and leveling machine is to make the steel belt be buffered when the steel belt comes out of the straightening and leveling machine for drooping storage, and the steel belt can be conveyed smoothly according to the drooping direction. Setting the adjustment bracket before the control feeding mechanism 500 has the same effect.

Referring to Fig. 1, the material storage device 400 is a storage pit 401 for the strip material to hang down naturally, or a storage rack 401' (not shown) for the strip material to bend upward.

Referring to Figure 1, this production line also includes a laser distance measuring device. There is a laser distance measuring device at the storage device 400, which detects the sag of the storage material, and feeds back the measured result to the PLC controller in the form of an electrical signal, and outputs a speed adjustment signal to the correction device through the operation of the PLC controller. The frequency converter of the straightening and leveling machine is used to adjust the speed of the straightening and leveling machine.

Referring to Fig. 6A, 6B, in the figure is the digital control feeding mechanism 500 of the present invention, comprises a servomotor 501, and it receives PLC signal to control the operation feeding speed and the frequency of servomotor through AC digital servo controller, and servomotor 501 passes main The transmission mechanism 502 drives a pair of feeding rollers 503 to rotate and feed; the adjusting cylinder 504 is arranged on the frame 505 to control the lifting and falling of the upper feeding roller 5031, and when the feeding is stopped, the upper feeding roller 5031 is lifted; The front end of 503 is provided with an anti-retreat device 507, and the anti-retreat device prevents the belt material from retreating after stopping feeding. The numerical control feeding mechanism 500 further includes an oiling device 506 arranged behind the feeding roller 503, the oiling device 506 includes: a pair of oiling rollers 5061 and an electric oil pump oil supply device 5068, and the oiling roller 5061 includes: a hollow The shaft 5062 and the overcoat 5063 which is arranged outside the hollow shaft 5062 and has a gap with the outer circle of the hollow shaft 5062, have a plurality of small holes 5064 on the circumferential surface of the hollow shaft 5062 and the overcoat 5063, and inject lubrication at one end of the hollow shaft 5062. There are holes 5065 for oil, and the surface of the oiling roller is covered with a layer of felt 5066, and the ends of the hollow shafts 5062 of two adjacent oiling rollers are provided with springs 5067 to compress the two shafts.

Referring to Fig. 7, the press machine 600 of the present invention is shown in the figure, which is a two-point closed press machine, which includes: a closed body 601, a DC motor 602 located on the top of the body 601, and a stepless speed regulating device 603 It is connected with the motor 602, and the output terminal of the motor 602 is connected with a two-stage deceleration mechanism 604 and a pair of crank-link mechanisms 605, and the connecting rod 606 is connected to drive the slider 607; a balancer 608 is also provided above the slider 607; The press also includes a lubrication system and an air piping system.

Referring to Fig. 8, the throwing device 700 of the present invention includes: a motor 701, a speed reduction device 707, a transmission device 702, a set of upper throwing rollers 703, a set of lower throwing rollers 704, a cylinder 705, and a frame 708, the upper throwing roller bracket 706, the cylinder 705 is fixed on the upper plane of the frame 708, the push-pull rod of the cylinder 705 is fixed to the upper throwing roller bracket 706, and the motor 701 is arranged on the upper throwing roller bracket 706 The upper plane, the upper throwing roller 703 is pivotally arranged on the upper throwing roller bracket 706 in a straight line, the motor 701 is connected to the deceleration device 707 and drives the upper throwing roller 703 to rotate through the transmission device 702, the described The lower throwing roller 704 is fixed on the bottom of the frame 708, and is located below the upper throwing roller 703; the push-pull rod of the cylinder 705 drives the upper throwing roller bracket 706 to move up and down, thereby driving the upper throwing roller 704 to lift up and down.

The electrical control device 900 of the present invention comprises: the PLC programmable controller model is: S7-300 series, the CPU central processing unit model is 315-2DP, also includes the press number adjustment system (Germany) for press speed regulation Siemens), purchased mold height adjuster produced by American MTS company, AC digital servo control system (Germany Rexroth), AC frequency converter (Germany Siemens) for automatic speed adjustment of straightening and leveling machines, and electric control Cabinet master control station, small control stations of each station, touch screen, etc. The action of the whole production line is completed by the PLC controller and centralized control, through the communication interface on the PLC control system, the information exchange between the whole line and the host computer. The PLC controller is connected with the AC digital servo controller of the CNC feeding mechanism through the RS485 serial communication port. The whole line has programmable, storage and recall functions for parts processing. Various technical parameters suitable for continuous stamping of different molds are stored in the programmable controller; by selecting different processing workpiece numbers, the operating speed of the press is calculated. The motor speed of the press is adjusted by the press adjustment system, and a speed signal is accurately calculated by the PLC through the number of press operations and the length of the workpiece, and the material is fed between the communication interface on the PLC control system and the communication port of the AC digital servo control system The speed and frequency signals are transmitted to the servo motor, so that the servo motor can feed materials according to the given speed and frequency, and control the CNC feeding mechanism to feed materials accurately. The laser distance measuring device installed at the material storage device detects whether the sag of the strip material is appropriate, and feeds back the signal to the PLC. After processing and calculation, the PLC sends the AC frequency converter of the straightening and leveling machine to change the speed of the frequency conversion motor to adjust Storage capacity, so that the output speed of the straightening and leveling machine matches the servo feeding speed and stamping speed; the PLC controller is also connected with the DC speed control system and the die height regulator controlling the press to adjust the stroke of the press frequency. When the mold number is input, the height of the mold is automatically adjusted to the preset value through the PLC and the height regulator of the mold, and then stops automatically. According to the stamping frequency of the press, the PLC controller outputs the control signal to control the throwing frequency of the throwing machine, and at the same time feeds back the reset signal of the lower throwing roller to the PLC controller. When the reset is incorrect, the PLC controller sends a power-off and shutdown Signal. The PLC controller controls the pressing device on the uncoiler to press the material by detecting the tension of the uncoiler.

The display screen can display the production status of the whole line, various parameters including part number, mold number, cut-to-length length, mold loading height, running speed, number of processed pieces, etc., as well as fault diagnosis information. Each stand-alone machine can be adjusted manually and has an emergency stop function. The whole line is automatically detected, with error display and self-stop function. The press not only has the automatic adjustment of the mold height, but also has the memory function of the press stop and the function of reversing.

During use, the steel strip of the whole plate is driven to be uncoiled by the motor 102 of the uncoiler 100, and the coil material forms a certain gravitational force between the uncoiler and the straightening and leveling machine 200 through the pneumatic friction device 106 on the uncoiler, and the steel strip After being straightened and leveled by the straightening and leveling machine 200, the material is stored in the storage pit by adjusting the bracket 300 for step-by-step feeding. A laser detection device is installed in the middle of the storage pit to detect the sagging of the steel belt. Whether the position of the steel belt is within the specified range, if the distance between the steel belt and the upper detection point is close, it means that there is less material stored, then the PLC controller signal is fed back through the laser detection device, and the PLC controller outputs the control signal to the AC frequency conversion of the straightening and leveling machine to adjust the speed of the variable frequency motor. The steel belt is fed through the servo numerical control feeding mechanism under the control of the PLC controller at a fixed speed and frequency, and is continuously punched and cut by the punching machine, and the material is thrown synchronously by the throwing machine to complete the entire automatic production process of the workpiece.

Claims (16)

1. A production line for continuous stamping of steel strips, characterized in that it includes sequentially arranged: an uncoiler (100) for uncoiled steel strips, a straightening and leveling machine for straightening and straightening steel strips (200), material storage device (400), numerically controlled feeding mechanism (500) is fixed on the side of the feeding of press machine (600) thereafter, press machine (600), throwing material device (700) is fixed on press machine On the discharge side, the production line also includes an electrical control device (900) for controlling servo feeding and continuous punching of the production line. 2. The production line for continuous stamping of steel strips according to claim 1, characterized in that: the electrical control device (900) includes: a PLC programmable controller, and also includes a press for speed regulation of the press Adjustment system, mold height regulator, AC digital servo control system, frequency converter for automatic speed regulation of straightening and leveling machines, electric control cabinet, and main control station. 3. The production line for continuous stamping of steel strips according to claim 1, characterized in that: the uncoiler (100) is a double-head uncoiler, which includes: a fuselage (101) with Two hollow shafts (104), a tensioning device (105) for tightening the inner hole of the steel strip reel is arranged on the hollow shaft (104), and two pneumatic compression devices for compressing the steel strip (108) is arranged on the fuselage, the side of tensioning device. 4. The production line for continuous stamping of steel strip according to claim 3, characterized in that: a motor (102) is provided on the upper part of the fuselage to facilitate automatic material introduction and provide power for the uncoiling mandrel, and the motor (102) The two output shafts are directly connected to the reduction gear, and then connected to the hollow shaft (104) through the transmission device (103); a pneumatic friction device (106) is also provided between the fuselage (101) and the hollow shaft (104). ), the pneumatic friction device (106) includes a friction disc (1061) fixed on the hollow shaft (104) and a pneumatic tensioner (1062) fixed on the fuselage (101), used to make the coil material in the uncoiler A certain gravitational force is formed between the straightening and leveling machine. 5. The production line for continuous stamping of steel strip according to claim 3 or 4, characterized in that: said tensioning device (105) is a hydraulic tensioning device, which includes: a hollow shaft (104) The piston shaft (1051) in the cavity, the piston (1053) connected to one end of the piston shaft (1051), the piston cylinder (1052) that is arranged outside the piston and cooperates with the piston, and the piston shaft (1051) stretch out the hollow shaft ( 104) the tension inner sleeve (1055) connected to the other end, the tension outer sleeve (1056) outside the tension inner sleeve (1055), the two ends are respectively hinged on the outer surface of the tension inner sleeve (1055) and A plurality of hinge rods (1057) on the inner surface of the overcoat (1056) are tightened; the inner sleeve (1055) is sleeved on the hollow shaft (104) and slides along the key axis on the hollow shaft (104). 6. The production line for continuous stamping of steel strip according to any one of claims 3 or 4, characterized in that: the pneumatic pressing device (108) includes: a cylinder (1081), a connecting rod mechanism (1082) and the pressing wheel (1083), the link mechanism (1082) includes a support arm (1084) fixed on the fuselage (101), and the front end of the support arm (1084) is provided with a rotatable cantilever shaft (1086), The cantilever end of the cantilever shaft (1086) is fixedly connected with the rear portion of the swing arm (1085) through a key, and the swing arm (1085) is divided into front and rear parts, and the front part accounts for most of the length of the whole swing arm (1085). part, the front end of the swing arm (1085) is hinged to the pressure wheel (1083), and the tail end of the swing arm (1085) is connected to the push rod front end of the cylinder (1081). 7. The production line for continuous stamping of steel strips according to claim 1, characterized in that: the straightening and leveling machine (200) comprises: a straightening device (201) and a leveling device (202) The left and right are arranged on the machine base (203); the two variable frequency motors (204) respectively drive a pair of lead rollers (206), a group of straightening rollers (207) and a pair of The lead roller (208), a set of straightening rollers (209); the straightening rollers (207) and the straightening rollers (209) are arranged perpendicularly to each other. 8. The production line for continuous stamping of steel strips according to claim 1, characterized in that: the numerical control feeding mechanism (500) includes a servo motor (501), and the motor (501) is driven by a transmission mechanism (502) A pair of feeding rollers (503) are rotated and fed, and the adjusting cylinder (504) for controlling the lifting and falling of the upper feeding roller (5031) is arranged on the frame (505). 9. The production line for continuous stamping of steel strip according to claim 8, characterized in that: said numerical control feeding mechanism (500) further includes an oiling device (506) arranged behind the feeding roller (503), This oiling device (506) comprises: a pair of oiling rollers (5061) and oil supply device (5068), and described oiling roller (5061) comprises: hollow shaft (5062) and be located at outside the hollow shaft (5062) And with the overcoat (5063) of hollow shaft (5062) outer circle interval gap, the circumferential surface of hollow shaft (5062) and overcoat (5063) has a plurality of small holes (5064), and one end of hollow shaft (5062) has The hole (5065) for injecting lubricating oil, the surface of the oiling roller is covered with a layer of felt (5066), and the ends of the hollow shafts (5062) of two adjacent oiling rollers are provided with springs (5067 ). 10. The production line for continuous stamping of steel strips according to claim 1, characterized in that: the storage device (400) is a storage pit (401) for the strip-shaped material to sag naturally or a storage pit for the strip-shaped material Material storage rack (401 ') that material bends upwards. 11. The production line for continuous stamping of steel strip according to claim 1, characterized in that: said press (600) is a two-point closed press, which includes: a closed body (601), The DC motor (602) is located on the top of the fuselage (601), the stepless speed regulating device (603) is connected with the motor (602), the output terminal of the motor (602) is connected with a two-stage reduction mechanism (604), and a pair of Crank link mechanism (605), the connecting rod (606) is connected and drives the slider (607); a balancer (608) is also arranged above the slider (607); the press also includes a lubrication system and an air pipe road system. 12. The production line for continuous stamping of steel strips according to claim 1, characterized in that: the throwing device (700) includes: a motor (701), a reduction device (707), a transmission device (702), One set of upper throwing rollers (703), one set of lower throwing rollers (704), air cylinder (705), frame (708), upper throwing roller support (706), and the cylinder (705) is fixed on the frame (708), the push-pull rod of the cylinder (705) is fixed to the upper throwing roller bracket (706), and the motor (701) is arranged on the upper plane of the upper throwing roller bracket (706). The upper throwing roller (703) is pivoted on the upper throwing roller bracket (706) in a straight line, and the motor (701) is connected to the reduction device (707) and drives the upper throwing roller (703) through the transmission device (702) Rotate, the lower throwing roller (704) is fixed on the bottom of the frame (708), and is located below the upper throwing roller (703); the push-pull rod of the cylinder (705) drives the upper throwing roller bracket (706 ) to move up and down, thereby driving the upper throwing roller (704) to lift and fall. 13. The production line for continuous stamping of steel strip according to any one of claims 1-4, 7-12, characterized in that: at the end of the straightening and leveling machine (200) and the feeding mechanism (500) Adjustment brackets (300) are respectively provided at the material ends; the adjustment brackets (300) include: an arc-shaped bracket (301) whose upper surface is curved upwards, and multiple arc-shaped brackets are arranged on the upper surface of the bracket (301). a carrier roller (302). 14. The production line for continuous stamping of steel strips according to any one of claims 1-4, 7-12, characterized in that: a tail detection device (1000) is further provided on the adjustment bracket (300) ), which includes a detection switch (1001), when a material-free signal is detected, it will be fed back to the PLC controller, and the PLC controller will send an instruction signal to stop and power off. 15. The production line for continuous stamping of steel strips according to any one of claims 1-4, 7-12, characterized in that: the automatic production line further includes a receiving material behind the throwing device (700) device (1100). 16. The production line for continuous stamping of steel strip according to any one of claims 1-4, 7-12, characterized in that: the storage device (400) is also provided with a laser distance measuring device.

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