CN108856598B - CNC spring machine synchronous wire feeding frame and wire feeding method - Google Patents
CNC spring machine synchronous wire feeding frame and wire feeding method Download PDFInfo
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- CN108856598B CN108856598B CN201810675826.6A CN201810675826A CN108856598B CN 108856598 B CN108856598 B CN 108856598B CN 201810675826 A CN201810675826 A CN 201810675826A CN 108856598 B CN108856598 B CN 108856598B
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- servo motor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F23/00—Feeding wire in wire-working machines or apparatus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The application discloses a CNC spring machine synchronous wire feeding frame which comprises a box body, wherein a servo motor is arranged in the box body, an output shaft of the servo motor is connected with a gearbox, an output end of the gearbox is connected with a rotary column, a wire feeding disc is fixedly connected to the rotary column, a pull rod box assembly and a plurality of groups of wire columns are arranged outside the box body, a PLC (programmable logic controller) and a frequency converter are arranged in the box body, a servo motor encoder is arranged on the servo motor, the servo motor encoder and the frequency converter are respectively and electrically connected with the PLC, the servo motor encoder is used for converting detected rotation angle and rotation speed information of the servo motor into electric signals and transmitting the electric signals to the PLC, and the PLC receives signals of the servo motor encoder and regulates and controls the servo motor through the frequency converter. The application can realize automatic feeding and simultaneously meet the requirement of synchronous feeding under the condition of meeting the automatic feeding.
Description
Technical Field
The application relates to the technical field of spring machines, in particular to a CNC spring machine synchronous wire feeding frame and a wire feeding method.
Background
Chinese patent grant publication number CN204980528U discloses a full-automatic wire feeder, comprising: the machine frame is provided with a driving motor, the driving motor is connected with a gearbox, the gearbox is connected with a rotary column, a chassis circular plate is connected to the rotary column, a plurality of branch line disk positioning columns are fixedly arranged on the chassis circular plate, at least three groups of wire guide columns are arranged on the periphery of the chassis circular plate, and a wire feeding box assembly is arranged on one side of the chassis circular plate. The wire feeding box assembly comprises a wire feeding box, a detection circuit is arranged in the wire feeding box, a wire feeding support electrically connected with the detection circuit is connected to the wire feeding box, the wire feeding support is connected with the wire feeding box through a rotating shaft, and a wire feeding rod is connected to the tail end of the wire feeding support. The wire feeding support is movably pivoted with the wire feeding box through a rotating shaft, the other side of the wire feeding support is connected with a reset spring, and the other end of the reset spring is connected with the wire feeding box.
The working flow is as follows: the wire rod is placed on the chassis circular plate in an auxiliary mode through the wire coil positioning column, the wire rod passes through the first guide coil on the wire feeding rod after passing through the wire guide column in a matching mode, when follow-up processing equipment works, a detection circuit arranged in the wire feeding box assembly can detect the stress condition of the wire feeding support in real time, when the detection circuit detects that the wire feeding support is stressed, the circuit drives the frequency converter to control the driving motor to work, the driving motor drives the gearbox to work, power is transmitted to the rotating column, and accordingly the chassis circular plate rotates to carry out automatic paying-off. When the detection circuit detects that the tension is not applied, the driving motor is controlled to stop working.
The disadvantages of the prior art are: because the tension of the wire feeding bracket is detected through the detection circuit, the wire needs to overcome a certain tension before the driving motor is started to feed the wire forwards, the repeated actions are performed, the tension born by the wire feeding bracket is pulled by the wire feeding bracket to influence the wire diameter and performance of the wire, the quality of the wire feeding mode is unstable when the small wire diameter and high-precision spring is produced, and the stress of the steel wire becomes inconsistent in the wire drawing process. Therefore, there is a need to improve the existing wire feeder structure to overcome the drawbacks of the thin wire materials that require pulling before moving.
Disclosure of Invention
In order to overcome the defects, the application provides a CNC spring machine synchronous wire feeding frame and a wire feeding method.
In order to achieve the above purpose, the present application adopts the following technical scheme:
the CNC spring machine synchronous wire feeding frame comprises a box body, wherein a servo motor is arranged in the box body, an output shaft of the servo motor is connected with a gearbox, an output end of the gearbox is connected with a rotary column, a wire feeding disc is fixedly connected to the rotary column, a pull rod box assembly and a plurality of groups of wire poles are arranged outside the box body, the pull rod box assembly is positioned on one side of the wire feeding disc, the groups of wire poles are distributed around the wire feeding disc, and a first wire coil is arranged on the wire poles; the method is characterized in that: the servo motor is characterized in that a PLC (programmable logic controller) and a frequency converter are arranged in the box body, a servo motor encoder is arranged on the servo motor, the servo motor encoder and the frequency converter are respectively and electrically connected with the PLC, the servo motor encoder is used for converting detected rotation angle and rotation speed information of the servo motor into electric signals and transmitting the electric signals to the PLC, and the PLC receives the signals of the servo motor encoder and regulates and controls the servo motor through the frequency converter.
The CNC spring machine synchronous wire feeding frame is characterized in that: the pull rod box assembly comprises a pull rod box, a pull rod, a rotary potentiometer and a transmission gear set, the rotary potentiometer is electrically connected with the PLC, the pull rod is rotationally connected with the pull rod box through a rotating shaft, and a second guide coil is arranged at the tail end of the pull rod; the transmission gear set consists of a large gear and a small gear which are meshed with each other, the large gear is fixedly arranged on a rotating shaft of the rotary potentiometer, and the inner end of the rotating shaft extends into the pull rod box and is fixedly connected with the small gear.
The wire feeding method for the CNC spring machine synchronous wire feeding frame is characterized by comprising the following steps of: and the PLC controller controls the corresponding running time and frequency of the servo motor through the frequency converter to fulfill the aim of automatic feeding.
The wire feeding method as described above is characterized in that: the rotary potentiometer is driven by the pull rod through the transmission gear set, when the wire is not enough, the pull rod slightly acts, the potentiometer immediately sends a signal to the PLC, the PLC prompts the servo motor to accelerate through the frequency converter, the PLC receives the potentiometer signal and calculates the slight action times of the pull rod in unit time, if the slight action times of the pull rod are larger than the set times of the PLC, the PLC increases the rotating speed or the running time of the servo motor through the frequency converter until the slight action times of the pull rod in unit time are smaller than or equal to the set times of the PLC.
Compared with the prior art, the application has the following advantages:
1. the automatic feeding is realized by the wire feeding frame, a servo motor encoder output signal is extracted from a servo motor, a stable PLC acceptable pulse signal is converted, no matter production or equipment debugging is carried out, corresponding pulse signal output exists as long as the servo motor acts, the pulse number of different outputs of each spring material length is also different, and the PLC controller is enabled to control the corresponding running time and frequency of the servo motor through a frequency converter according to material requirements to meet the purpose of automatic feeding through programming the PLC controller.
2. Under the condition of meeting the automatic feeding, the fuzzy logic control is realized to meet the requirement of synchronous feeding. Because the pulse number sent by the spring feeding servo motor is consistent, the size of each circle of each bundle of wires is different, when the circles are small, the material is not enough to pull the wire to alarm and stop, and when the wires are more, the wires can fall on the ground to cause greater trouble. A potentiometer is arranged in the pull rod box, the potentiometer is driven by the pull rod through a gear, when materials are not enough, the pull rod slightly acts on the potentiometer to immediately send a signal to the PLC controller, the frequency converter is accelerated, the micro-action times of the pull rod in unit time are calculated through a calculation instruction of the PLC controller, the frequency or the operation time of the frequency converter is automatically increased if the actions are frequent, and the frequency or the operation time of the frequency converter is automatically reduced if the action times of the pull rod in unit time are less, so that the purpose of automatically synchronizing servo feeding is achieved through fuzzy logic control.
Drawings
Fig. 1 is a schematic diagram of a main view structure of a synchronous wire feeder in the present application.
Fig. 2 is a schematic view of a three-dimensional structure of a synchronous wire feeding frame in the present application.
Fig. 3 is a schematic front view of the draw bar box assembly of the present application.
Fig. 4 is a schematic perspective view of a draw bar box assembly according to the present application.
Fig. 5 is a schematic block diagram of the circuit control in the present application.
Fig. 6 is a signal conversion circuit diagram of the present application for converting the servo motor encoder encoded signal into a pulse signal received by the PLC controller.
In the figure: 1. a base; 2. a PLC controller; 3. a frequency converter; 4. a servo motor; 41. a servo motor encoder; 5. a reduction gearbox; 6. a draw bar box assembly; 61. a pull rod box; 62. a pull rod; 63. rotating the potentiometer; 64. a rotating shaft; 65. a second conductive coil; 66. a large gear; 67. a pinion gear; 7. wire rod feeding tray; 71. a wire coil positioning column; 72. a bending part; 8. a case; 9. a spin column; 10. a wire post; 100. a first conductive coil; 200. a wire rod; 30. a signal conversion circuit; 301. a photo coupler.
Detailed Description
The application is described in further detail below with reference to the attached drawings and detailed description:
as shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, a synchronous wire feeding frame of CNC spring machine, including box 8, box 8 is connected with base 1 through the bracing piece, be provided with servo motor 4 in box 8, servo motor 4 output shaft has gearbox 5, gearbox 5 is worm gearbox, gearbox 5 output is connected with column spinner 9, be equipped with screwed joint and be connected with wire rod feeding tray 7 through the nut locking at column spinner 9 upper end, wire rod feeding tray 7 central point puts and sets firmly many branch dish reference column 71, many branch dish reference column 71 are distributed around screwed joint and nut circumference, be equipped with the bending part 72 of inwards buckling at the end of line dish reference column 71, bending part 72 can make things convenient for the quick guide-in of drum center and suit outside many branch dish reference column 71. The box body 8 is externally provided with a pull rod box assembly 6 and a plurality of groups of wire guide posts 10, the pull rod box assembly 6 is positioned on one side of the wire feeding tray 7, the plurality of groups of wire guide posts 10 are distributed around the wire feeding tray 7, and the wire guide posts 10 are provided with first guide coils 100. The PLC controller 2 and the frequency converter 3 are arranged in the box 8, the servo motor encoder 41 is arranged on the servo motor 4, the servo motor encoder 41 and the frequency converter 3 are respectively and electrically connected with the PLC controller 2, the servo motor encoder 41 is used for converting detected rotation angle and rotation speed information of the servo motor 4 into electric signals and transmitting the electric signals to the PLC controller 2, and the PLC controller 2 receives the signals of the servo motor encoder 41 and regulates and controls the servo motor 4 through the frequency converter 3.
Further improvement: as shown in fig. 6, the servo motor encoder 41 may also convert the rotation speed and rotation angle information of the servo motor 4 into pulse signals through the signal conversion circuit 30 with three groups of high-speed isolation photoelectric couplers 301 and output the pulse signals to the PLC controller 2.
In the application, the pull rod box assembly 6 comprises a pull rod box 61, a pull rod 62, a rotary potentiometer 63 and a transmission gear set, wherein the rotary potentiometer 63 is electrically connected with the PLC 2, the pull rod 62 is rotationally connected with the pull rod box 61 through a rotating shaft 64, and a second guide coil 65 is arranged at the tail end of the pull rod 62; the transmission gear set consists of a large gear 66 and a small gear 67 which are meshed with each other, the large gear 66 is fixedly arranged on a rotating shaft of the rotary potentiometer 63, and the inner end of the rotating shaft 64 extends into the pull rod box 61 and is fixedly connected with the small gear 67.
The working flow of the application is as follows: the wire rod is placed on the wire rod feeding tray 7 through the assistance of the wire coil positioning column 71, the wire rod 200 is matched with the first wire guide coil 100 on the wire guide column 10 and penetrates through the second wire guide coil 65 on the pull rod 62, when the wire rod is connected with subsequent processing equipment to work, a corresponding control program is arranged in the PLC controller 2, the power-on button is pressed, the PLC controller 2 controls the servo motor 4 to rotate according to the set program, meanwhile, the PLC controller 2 monitors the rotating speed and the rotating angle of the servo motor 4 in real time through the servo motor encoder 41 and regulates and controls the rotating speed of the servo motor 4 through the frequency converter 3, the work is started or stopped, the accurate control of the wire rod 200 for automatically synchronizing the wire feeding and the wire feeding length is achieved, the wire rod is not pulled by external force in the whole process, and automatic paying-off can be completed through the built-in program of the PLC controller 2.
The rotary potentiometer 63 in the pull rod box assembly 6 can detect the stress condition of the pull rod 62 in real time, when a wire conveying line breaks down or the wire is used up, the pull rod 62 on the pull rod box assembly 6 is pulled and drives the rotary shaft of the rotary potentiometer 63 to rotate through the transmission gear set, when the rotary potentiometer 63 detects that the pull rod 62 is pulled, the rotary potentiometer 63 sends an alarm signal to the PLC 2, and the PLC 2 receives the alarm signal of the rotary potentiometer 63 and controls the servo motor 4 to stop working.
A wire feeding method for a CNC spring machine synchronous wire feeding frame extracts output signals of a servo motor encoder from a servo motor and converts the output signals into stable pulse signals acceptable by a PLC,
the PLC controls the corresponding running time and frequency of the servo motor through the frequency converter to meet the purpose of automatic feeding.
The rotary potentiometer is driven by the pull rod through the transmission gear set, when the wire is not enough, the pull rod slightly acts, the potentiometer immediately sends a signal to the PLC, the PLC prompts the servo motor to accelerate through the frequency converter, the PLC receives the potentiometer signal and calculates the slight action times of the pull rod in unit time, if the slight action times of the pull rod are larger than the set times of the PLC, the PLC increases the rotating speed or the running time of the servo motor through the frequency converter until the slight action times of the pull rod in unit time are smaller than or equal to the set times of the PLC.
Compared with the prior art, the application has the following advantages:
1. the automatic feeding is realized by the wire feeding frame, a servo motor encoder output signal is extracted from a servo motor, a stable PLC acceptable pulse signal is converted, no matter production or equipment debugging is carried out, corresponding pulse signal output exists as long as the servo motor acts, the pulse number of different outputs of each spring material length is also different, and the PLC controller is enabled to control the corresponding running time and frequency of the servo motor through a frequency converter according to material requirements to meet the purpose of automatic feeding through programming the PLC controller.
2. Under the condition of meeting the automatic feeding, the fuzzy logic control is realized to meet the requirement of synchronous feeding. Because the pulse number sent by the spring feeding servo motor is consistent, the size of each circle of each bundle of wires is different, when the circles are small, the material is not enough to pull the wire to alarm and stop, and when the wires are more, the wires can fall on the ground to cause greater trouble. A potentiometer is arranged in a pull rod box of a wire feeding frame, the potentiometer is driven by a pull rod through a gear, when materials are not used, the pull rod slightly acts on the potentiometer to immediately send signals to a PLC (programmable logic controller), the frequency converter is accelerated, the micro-action times of the pull rod in unit time are calculated through a calculation instruction of the PLC, the frequency or the operation time of the frequency converter is automatically increased if the action is frequent, and the frequency or the operation time of the frequency converter is automatically reduced if the action times of the pull rod in unit time are less, so that the purpose of automatically synchronizing servo feeding is achieved through fuzzy logic control.
The present application has been described in detail with reference to the embodiments of the drawings, and those skilled in the art can make various modifications to the application based on the above description. Accordingly, certain details of the illustrated embodiments are not to be taken as limiting the application, which is defined by the appended claims.
Claims (1)
1. The utility model provides a CNC spring machine synchronous wire feeding frame, including box (8), be provided with servo motor (4) in box (8), servo motor (4) output shaft has gearbox (5), gearbox (5) output is connected with column spinner (9), fixedly connected with wire rod feeding tray (7) on column spinner (9), be equipped with pull rod box subassembly (6) and multiunit wire pole (10) on box (8) outward, pull rod box subassembly (6) are located one side of wire rod feeding tray (7), multiunit wire pole (10) are distributed around wire rod feeding tray (7), be equipped with first guide coil (100) on wire pole (10); the method is characterized in that: the automatic control device is characterized in that a PLC (programmable logic controller) controller (2) and a frequency converter (3) are arranged in a box body (8), a servo motor encoder (41) is arranged on a servo motor (4), the servo motor encoder (41) and the frequency converter (3) are respectively and electrically connected with the PLC controller (2), the servo motor encoder (41) is used for converting detected rotation angle and rotation speed information of the servo motor (4) into electric signals and transmitting the electric signals to the PLC controller (2), the PLC controller (2) receives the signals of the servo motor encoder (41) and regulates and controls the servo motor (4) through the frequency converter (3), a pull rod box assembly (6) comprises a pull rod box (61), a pull rod (62), a rotary potentiometer (63) and a transmission gear set, the rotary potentiometer (63) is electrically connected with the PLC controller (2), the pull rod (62) is rotationally connected with the pull rod box (61) through a rotating shaft (64), and a second guide coil (65) is arranged at the tail end of the pull rod (62); the transmission gear set consists of a large gear (66) and a small gear (67) which are meshed with each other, the large gear (66) is fixedly arranged on a rotating shaft of the rotary potentiometer (63), the inner end of the rotating shaft (64) stretches into the pull rod box (61) and is fixedly connected with the small gear (67), wires are placed on a wire feeding disc through the assistance of a wire coil positioning column, a servo motor encoder outputs signals from a servo motor and converts the signals into stable PLC acceptable pulse signals, the PLC controls the corresponding running time and frequency of the servo motor through a frequency converter to meet the purpose of automatic feeding, a rotary potentiometer is arranged in the pull rod box, the rotary potentiometer is driven by a pull rod through the transmission gear set, when the wires are not enough to be used, the potentiometer gives out signals to the PLC immediately, the PLC is enabled to accelerate the servo motor through the frequency converter, the PLC receives the potentiometer signals and calculates the number of slight actions of the pull rod in unit time, and if the number of the slight actions of the pull rod is larger than the PLC is set to be smaller than the number of times of the PLC in unit time, the PLC is enabled to pass through the frequency converter to increase the speed of the servo motor or the running time until the number of the rotation of the servo motor is smaller than the number of times of the PLC is smaller than the set to be equal to the number of times of the PLC in unit time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810675826.6A CN108856598B (en) | 2018-06-27 | 2018-06-27 | CNC spring machine synchronous wire feeding frame and wire feeding method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810675826.6A CN108856598B (en) | 2018-06-27 | 2018-06-27 | CNC spring machine synchronous wire feeding frame and wire feeding method |
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| Publication Number | Publication Date |
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| CN108856598A CN108856598A (en) | 2018-11-23 |
| CN108856598B true CN108856598B (en) | 2023-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810675826.6A Active CN108856598B (en) | 2018-06-27 | 2018-06-27 | CNC spring machine synchronous wire feeding frame and wire feeding method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106493267A (en) * | 2016-10-28 | 2017-03-15 | 嵊州市人和弹簧机械有限公司 | Coiling machine |
| CN106825327A (en) * | 2017-01-09 | 2017-06-13 | 湖北民族学院 | A kind of clutch feed mechanism for being applied to cutter |
| CN106984740A (en) * | 2017-05-25 | 2017-07-28 | 温州江南精机有限公司 | A kind of line sending steering mechanism of computer spring making machine |
| CN107350402A (en) * | 2017-08-31 | 2017-11-17 | 珠海隆鑫科技有限公司 | A kind of automatic material connection device of CNC coiling machines |
-
2018
- 2018-06-27 CN CN201810675826.6A patent/CN108856598B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106493267A (en) * | 2016-10-28 | 2017-03-15 | 嵊州市人和弹簧机械有限公司 | Coiling machine |
| CN106825327A (en) * | 2017-01-09 | 2017-06-13 | 湖北民族学院 | A kind of clutch feed mechanism for being applied to cutter |
| CN106984740A (en) * | 2017-05-25 | 2017-07-28 | 温州江南精机有限公司 | A kind of line sending steering mechanism of computer spring making machine |
| CN107350402A (en) * | 2017-08-31 | 2017-11-17 | 珠海隆鑫科技有限公司 | A kind of automatic material connection device of CNC coiling machines |
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| CN108856598A (en) | 2018-11-23 |
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