CN215356587U - Automatic wire tightening mechanism with constant tension and wire moving cutting machine - Google Patents
Automatic wire tightening mechanism with constant tension and wire moving cutting machine Download PDFInfo
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- CN215356587U CN215356587U CN202121517612.XU CN202121517612U CN215356587U CN 215356587 U CN215356587 U CN 215356587U CN 202121517612 U CN202121517612 U CN 202121517612U CN 215356587 U CN215356587 U CN 215356587U
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Abstract
The application provides an automatic tight silk mechanism of permanent tension and walk a cutting machine belongs to wire cutting device technical field. The constant-tension automatic wire tensioning mechanism comprises a synchronous belt, a wire tensioning guide wheel, a sliding block and a driving motor, wherein the synchronous belt is sleeved between a driving wheel and a driven wheel, and the driving wheel is driven by the driving motor to rotate so as to drive the synchronous belt to rotate along a closed loop; one end of the sliding block is connected with the synchronous belt and moves synchronously with the synchronous belt, the other end of the sliding block is provided with a wire tensioning guide wheel, and the wire tensioning guide wheel moves along with the sliding block to realize automatic adjustment of the tension of the cutting wire wound on the wire tensioning guide wheel. The constant-tension automatic wire tightening mechanism is applied to the wire moving cutting machine, and has the advantages of adjustable tension, high adjustment precision, self-adaptive real-time regulation and control and the like.
Description
Technical Field
The application relates to a constant-tension automatic wire tightening mechanism and a wire moving cutting machine, and belongs to the technical field of wire cutting devices.
Background
The common equipment for cutting the machined parts is wire moving equipment which generally comprises a lathe bed, a wire frame, a wire moving mechanism, a workbench and the like. In the wire feeding mechanism, in order to control the cutting pressure and the cutting angle, a wire tightening mechanism is usually used to control the tension of the cutting wire.
The tensioning mechanism of conventional reciprocating wire cutting machines typically employs a spring to control the tension, as shown in fig. 1: the tension device comprises an upper tension wheel 1a and a frame 2a, wherein the frame 2a is fixed on a machine tool, a tension seat 11a is slidably mounted on the frame 2a, the tension wheel 1a is fixed on the tension seat, and a spring 3a is connected between the frame 2a and the tension seat 11 a. During wire feeding, the cutting wire is output through the wire barrel 4a, wound out of the first guide wheel 5a, goes upwards to pass through the upper tension wheel 1a, then goes to the guide wheel at the lifting mechanism 6a, goes downwards to cut the workpiece, then passes through the wire guide nozzle 7a and the guide wheel 8a below the wire guide nozzle, then is sent to the lower tension wheel 9a, and then returns to the wire barrel 4a through the second guide wheel 5 a.
In the process, as the cutting is carried out, the upper tension wheel 1a and the lower tension wheel 9a are subjected to certain traction force, when the tension of the cutting wire is too high, the upper tension wheel 1a is pulled to drive the tension seat 11a to move towards the right side in the figure 1, so that the surface tension of the cutting wire is reduced, and at the moment, the spring 4a is compressed; conversely, when the wire tension is reduced, the spring 4a will move to the left as shown in FIG. 1, increasing the wire surface tension.
This approach, although simple, has very significant drawbacks:
(1) in the process of adjusting the tension, the tension is mainly realized by depending on the deformation of a spring, wherein a pressure spring is generally adopted, and under the condition of the same compression deformation, the pressure spring is low in stress at the initial end and needs to be higher when being compressed towards the terminal end, so that the adjustment force of the spring is uneven in the whole compression process, and the phenomenon of obvious tension fluctuation occurs;
(2) to accommodate tension adjustment, the spring needs to be relatively sensitive to deformation, but correspondingly, the deformation range is small.
(3) Tension adjustment is realized by deformation, only coarse adjustment can be performed, and the adjustment precision is low.
SUMMERY OF THE UTILITY MODEL
In view of this, the application provides an automatic tight silk mechanism that self-adaptation, can realize constant tension and adjust.
Specifically, the method is realized through the following scheme:
a constant tension automatic wire tightening mechanism comprises a synchronous belt, a wire tightening guide wheel, a slide block and a driving motor, wherein the synchronous belt is sleeved between a driving wheel and a driven wheel, and the driving wheel is driven by the driving motor to rotate so as to drive the synchronous belt to rotate along a closed loop; one end of the sliding block is connected with the synchronous belt and moves synchronously with the synchronous belt, the other end of the sliding block is provided with a wire tensioning guide wheel, and the wire tensioning guide wheel moves along with the sliding block to realize automatic adjustment of the tension of the cutting wire wound on the wire tensioning guide wheel.
Be applied to tension regulation with this application, the cutting wire is walked around tight silk guide pulley, and when the tension fluctuation appeared, this undulant change transmission was given the controller, and the operation of controller control drive module made driving motor work, and the action wheel rotates, drives the hold-in range operation to drive tight silk guide pulley and take place corresponding upper and lower displacement, compensate this tension fluctuation, until balanced, realize tensile regulation promptly.
Further, as preferable:
the driving motor is a torque motor. The mechanical elements can generate a certain degree of torsional deformation under the action of torque, and the method has important significance for determining and controlling the load of a transmission shaft, designing the strength of working parts of a transmission system, selecting the capacity of a prime mover and the like. By utilizing the principle, when tension fluctuation occurs, the driving motor generates torsion, the driving wheel can be automatically driven to rotate, the driving wheel drives the synchronous belt to run, the wire tightening guide wheel is driven to generate corresponding up-and-down displacement, the torsion is compensated, and the tension adjustment is realized until the torsion balance is finished. The device reflects the surface tension of the cutting wire by the torque data of the driving motor, achieves accurate and precise tension control, adjusts the tension at any time along with the change of the tension, realizes the conversion between the tension and the driving force, and is embodied as the running speed of a synchronous belt and the lifting height of a wire tensioning guide wheel.
The slide block is sleeved on the slide rail. By means of the slide rail, the limitation of the moving space of the slide block is realized, and the defects of large abnormal motion fluctuation and poor moving stability are avoided. The slide rail can adopt a linear slide rail.
Comprises a driving module and a controller; the driving module is connected with a driving motor to control the driving motor to work; the controller receives the tension signal on the cutting wire and is connected with the driving module.
The slide rail is also provided with an upper travel switch and a lower travel switch which are respectively used for monitoring the upper limit and the lower limit of the movement of the wire tensioning guide wheel. When the wire tensioning guide wheel runs to the uppermost end, the wire tensioning guide wheel touches an upper travel switch, the upper travel switch sends a signal to the controller, and the controller controls the driving module to drive the driving motor to rotate reversely so as to prevent the wire tensioning guide wheel from continuously moving upwards; when the tight guide wheel moves to the lowest end, the tight guide wheel touches the down travel switch, the down travel switch sends a signal to the controller, and the controller controls the driving module to drive the driving motor to rotate reversely, so that the tight guide wheel is prevented from continuously moving downwards.
Above-mentioned each part can be installed on the base, and the base is fixed in the frame: the base is provided with a driving wheel, a driven wheel and a slide rail, the slide rail is arranged in parallel with the synchronous belt, the slide block is sleeved on the slide rail, one end of the slide block is fixed with the synchronous belt, the other end of the slide block is fixed with the wire tightening guide wheel, the upper end of the slide rail is provided with an upper travel switch, and the lower end of the slide rail is provided with a lower travel switch.
The connecting plate is installed on the sliding block, one end of the connecting plate is fixed with the synchronous belt, and the other end of the connecting plate is fixed with the wire tightening guide wheel. More preferably: the synchronous belt is clamped between the fixed plate and the connecting plate and fixedly connected through a fixing piece.
Still including the backplate, the backplate is located the hold-in range outside, realizes the protection to the hold-in range, prevents that external environment from causing the interference to the hold-in range, influences tension control's accuracy.
The automatic wire tensioning mechanism is applied to the whole wire traveling cutting machine and comprises a wire barrel, a first guide wheel, the constant-tension automatic wire tensioning mechanism, a second guide wheel, a wire guide nozzle, a third guide wheel and a fourth guide wheel, wherein the cutting wire is arranged along the wire barrel, the first guide wheel, the constant-tension automatic wire tensioning mechanism, the second guide wheel, the wire guide nozzle, the third guide wheel and the fourth guide wheel to form a closed loop, a tension detection mechanism is arranged in cooperation with the closed loop of the cutting wire, and the tension detection mechanism, the wire tensioning guide wheel and a driving motor are matched with each other to realize automatic adjustment of tension on the cutting wire. Preferably: the second guide wheel, the wire guide nozzle and the third guide wheel are positioned on the same vertical line, and when the second guide wheel changes along with the height of the Z-axis lifting mechanism, the smooth cutting surface can be ensured. The third guide wheel and the fourth guide wheel are arranged in the same horizontal direction, so that the cutting wire is prevented from being twisted due to direction change. The fourth guide wheels are at least two, the angle change of the cutting line between the fourth guide wheels and the wire barrel is large, tension fluctuation is easy to occur, and the influence of the fluctuation on the tension can be buffered by arranging more fourth guide wheels. And a fifth guide wheel is arranged between the constant-tension automatic wire tensioning mechanism and the second guide wheel, and the fifth guide wheel and the second guide wheel are arranged horizontally to adjust the tension to a greater degree and more finely.
In the operation process, when the tension on the cutting wire is detected to fluctuate (such as a tension detection device and the like), fluctuation signals are transmitted to the controller, the controller sends an instruction to the driving module according to the signals, the driving module controls the operation state of the driving motor, the driving motor adjusts parameters such as operation speed and operation direction according to the fluctuation signals and feeds back the parameters to the driving wheel, the synchronous belt sleeved on the driving wheel and the driven wheel changes in operation and drives the sliding block to move up and down along the sliding rail, the wire tensioning guide wheel synchronously moves along with the synchronous movement, the tension on the cutting wire changes along with the synchronous movement until the tension fluctuation tends to balance, and the wire tensioning guide wheel does not move any more. The tension monitored in real time is used as a control index of the moving state of the wire tensioning guide wheel, and the tension on the cutting wire loop can be accurately adjusted in real time.
Drawings
FIG. 1 is a schematic structural view of a conventional wire tensioning mechanism;
FIG. 2 is a schematic perspective view of a wire tensioning mechanism according to the present application;
FIG. 3 is a schematic diagram of signal transmission in the present application;
fig. 4 is a schematic diagram of an application state of the present application.
Reference numbers in the figures: 1. a wire tensioning guide wheel; 11. a slider; 12. a slide rail; 13, connecting plates; 131. a guide wheel fixing seat; 132. a fixing plate; 2. a synchronous belt; 21. a guard plate; 3. a drive module; 31. a drive motor; 32. a driving wheel; 33. a driven wheel; 4. a controller; 41. an upper travel switch; 42. a lower travel switch; 5. a base; 6. a wire barrel; 71. a first guide wheel; 72. a second guide wheel; 721, Z-axis elevating mechanism; 73. a third guide wheel; 74. a fourth guide wheel; 75. a fifth guide wheel; 8. a thread guide nozzle.
Detailed Description
The constant-tension automatic wire tensioning mechanism of the embodiment is combined with fig. 2, and comprises a wire tensioning guide wheel 1, a synchronous belt 2, a sliding block 11, a driving module 3 and a controller 4, wherein the synchronous belt 2 is sleeved between a driving wheel 32 and a driven wheel 33, and the driving wheel 32 is driven by a driving motor 31 to rotate so as to drive the synchronous belt 2 to rotate along a closed loop; one end of the sliding block 11 is connected with the synchronous belt 2 and moves synchronously with the synchronous belt 2, the other end of the sliding block is provided with the wire tensioning guide wheel 1, and the wire tensioning guide wheel 1, the controller 4 and the driving module 3 are matched to realize automatic tension regulation and control.
Be applied to tension with this application and adjust, the cutting wire is walked around tight silk leading wheel 1, when the cutting wire detects that tension appears undulant, this tension signal transmission gives controller 4, and 3 operations of controller 4 control drive module make driving motor 31 work, and action wheel 32 rotates, drives hold-in range 2 operation to drive tight silk leading wheel 1 and take place corresponding upper and lower displacement, compensate this tension undulant, until balanced, realize tensile regulation promptly.
As a preferred embodiment: the driving motor 31 adopts a torque motor, and the controller 4 can calculate how much motor torque the torque motor needs to output according to the existing tension signal of the cutting wire, so as to drive the transmission distance of the synchronous belt 2, thereby enabling the sliding block 11 to accurately move up and down together with the wire tensioning guide wheel 1, and realizing the tension adjustment of adjusting the cutting wire.
As a preferred embodiment: the slide block 11 is sleeved on the slide rail 12. The slide rail 12 may be a linear slide rail. The slide rail 12 and the synchronous belt 2 are designed in parallel. By means of the slide rail 12 and the synchronous belt 2 which are designed in a straight line, the limitation of the moving space of the slide block 11 is broken, and the moving stability of the slide block 11 can be ensured.
As a preferred embodiment: install connecting plate 13 on the slider 11, connecting plate 13 one end sets up guide pulley fixing base 131, and tight silk guide pulley 1 is installed on guide pulley fixing base 131. The other end of the connecting plate 13 is connected with the synchronous belt 2. Specifically, a fixing plate 132 can be matched, the synchronous belt 2 is clamped between the connecting plate 13 and the fixing plate 132, and the three are fixed into a whole through fixing parts such as screws. Therefore, the rotation of the synchronous belt 2 can effectively and stably drive the sliding block 11 to move.
As a preferred embodiment: the upper limit position and the lower limit position of the sliding block 11 further comprise an upper travel switch 41 and a lower travel switch 42 which are respectively used for monitoring the upper limit and the lower limit of the movement of the wire tensioning guide wheel 1. Travel switch sets up the dog respectively, and hold-in range 2 is fixed with slider 11, and driving motor 31 rotates, drives slider 11 and reciprocates, realizes promptly that the cutting wire tension through tight silk guide pulley 1 changes. When the slide block 11 contacts with the stop of the upper travel switch 41 or the lower travel switch 42, the travel limit model is generated and fed back to the controller 4, and a feedback instruction is waited for by the controller 4.
As a preferred embodiment: with reference to fig. 2, the components may be mounted on a base 5, the base 5 being fixed to the frame; the base 5 is provided with a driving wheel 32, a driven wheel 31, a slide rail 12 (and an upper travel switch 41 arranged at the upper end of the slide rail 12 and a lower travel switch 42 arranged at the lower end of the slide rail 12 if necessary). Slide rail 12 and hold-in range 2 parallel arrangement, slider 11 suit are on slide rail 12 to make its one end and hold-in range 2 fixed, the other end is fixed with tight silk guide pulley 1.
As a preferred embodiment: still including backplate 21, backplate 21 is located the hold-in range 2 outside, realizes the protection to hold-in range 2, prevents that external environment from causing the interference to hold-in range 2, influences tension control's accuracy. Backplate 21 mountable is on base 5, and backplate 21 can set up to U-shaped groove structure, and the opening is towards hold-in range 2 one side, realizes the protection to hold-in range 2 traffic route.
The automatic wire tensioning mechanism is applied to the whole wire traveling cutting machine, and with reference to fig. 4, the automatic wire tensioning mechanism comprises a wire barrel 6, a first guide wheel 71, the constant-tension automatic wire tensioning mechanism, a second guide wheel 72, a wire guide nozzle 8, a third guide wheel 73 and a fourth guide wheel 74, wherein the second guide wheel 72 forms a closed loop along with a Z-axis lifting mechanism 721, the cutting wire forms a tension detection mechanism (which is not marked in the figure and can adopt a tension sensor or a similar structure) along with the wire barrel 6, the first guide wheel 71 and the wire tensioning guide wheel 1, the second guide wheel 72, the wire guide nozzle 8, the third guide wheel 73 and the fourth guide wheel 74 of the constant-tension automatic wire tensioning mechanism, the tension detection mechanism is connected with a controller 4, and the tension detection mechanism, the wire tensioning guide wheel 1, the controller 4 and the driving module 3 are matched with each other to realize automatic adjustment of the tension on the cutting wire.
The second guide wheel 72, the godet nozzle 8 and the third guide wheel 73 are positioned on the same vertical line, and when the height of the second guide wheel 72 changes along with the height of the Z-axis lifting mechanism 721, the smooth cutting surface can be ensured. The third guide wheel 73 is arranged horizontally with the fourth guide wheel 74 to avoid twisting of the cutting wire due to direction changes. The number of the fourth guide wheels 74 is at least two, the angle change of the cutting line between the fourth guide wheels 74 and the wire barrel 6 is large, tension fluctuation is easy to occur, and the influence of the fluctuation on the tension can be buffered by connecting the fourth guide wheels in a large number. At this time, one of the fourth guide wheels, which is close to the third guide wheel 73, is disposed horizontally with the third guide wheel 73. A fifth guide wheel 75 is arranged between the constant-tension automatic wire tightening mechanism and the second guide wheel 72, and at the moment, the fifth guide wheel 75 and the second guide wheel 72 are arranged horizontally to adjust the tension to a greater degree and more finely.
In this embodiment, the operation process of the wire moving cutting machine is as follows: when the tension on the cutting wire is detected to fluctuate (components such as a tension detection device and the like), the tension signal is transmitted to the controller 4, the controller 4 sends an instruction to the driving module 3 according to the signal, the driving module 3 controls the driving motor 31 to accurately work, the rotating speed, the rotating direction and the like of the synchronous wheels (namely the driving wheel 32 and the driven wheel 33) are controlled, the synchronous belt 2 sleeved on the driving wheel 32 and the driven wheel 33 changes in operation, the sliding block 11 is driven to make corresponding displacement along the sliding rail 12, the wire tensioning guide wheel 1 synchronously displaces along with the displacement, the tension of the cutting wire changes along with the change until the tension is adjusted to a required optimal state, and the wire tensioning guide wheel 1 does not displace any more. The tension can be monitored in real time, real-time accurate adjustment is made for the movement of the wire tensioning guide wheel, and the constancy of the tension on the cutting wire loop is achieved.
Claims (10)
1. The utility model provides an automatic tight silk mechanism of constant tension which characterized in that: the synchronous belt is sleeved between a driving wheel and a driven wheel, and the driving wheel is driven by the driving motor to rotate so as to drive the synchronous belt to rotate along a closed loop; one end of the sliding block is connected with the synchronous belt and moves synchronously with the synchronous belt, the other end of the sliding block is provided with a wire tensioning guide wheel, and the wire tensioning guide wheel moves along with the sliding block to realize automatic adjustment of the tension of the cutting wire wound on the wire tensioning guide wheel.
2. The constant-tension automatic wire tensioning mechanism according to claim 1, characterized in that: the driving motor is a torque motor.
3. The constant-tension automatic wire tensioning mechanism according to claim 1, characterized in that: comprises a driving module and a controller; the driving module is connected with a driving motor to control the driving motor to work; the controller receives the tension signal on the cutting wire and is connected with the driving module.
4. The constant-tension automatic wire tensioning mechanism according to claim 1, characterized in that: the slide block is sleeved on the slide rail.
5. The constant-tension automatic wire tensioning mechanism according to claim 4, characterized in that: the slide rail is also provided with an upper travel switch and a lower travel switch which are respectively used for monitoring the upper limit and the lower limit of the movement of the wire tensioning guide wheel.
6. A constant-tension automatic wire tensioning mechanism as claimed in claim 1, wherein the slide block is provided with a connecting plate, one end of the connecting plate is provided with a wire tensioning guide wheel, and the other end of the connecting plate is fixed with the synchronous belt.
7. The constant-tension automatic wire tensioning mechanism according to claim 6, characterized in that: the synchronous belt clamping device is characterized by further comprising a fixing plate, wherein the synchronous belt is clamped between the fixing plate and the connecting plate and fixedly connected through a fixing piece.
8. The constant-tension automatic wire tensioning mechanism according to claim 1, characterized in that: the automatic thread tightening device comprises a base, wherein a driving wheel, a driven wheel and a sliding rail are mounted on the base, the sliding rail is arranged in parallel with a synchronous belt, a sliding block is sleeved on the sliding rail, one end of the sliding block is fixed with the synchronous belt, the other end of the sliding block is fixed with a thread tightening guide wheel, an upper travel switch is arranged at the upper end of the sliding rail, and a lower travel switch is arranged at the lower end of the sliding rail.
9. The constant-tension automatic wire tensioning mechanism according to claim 1, characterized in that: still including the backplate, the backplate is located the hold-in range outside, realizes the protection to the hold-in range.
10. A wire-moving cutting machine is characterized in that: the automatic constant-tension wire tensioning mechanism comprises a wire barrel, a first guide wheel and the automatic constant-tension wire tensioning mechanism, a second guide wheel, a wire guide nozzle, a third guide wheel and a fourth guide wheel, wherein the wire guide nozzle, the third guide wheel and the fourth guide wheel form a closed loop along the wire barrel, the first guide wheel, the automatic constant-tension wire tensioning mechanism, the second guide wheel, the wire guide nozzle, the third guide wheel and the fourth guide wheel, a tension detection mechanism is arranged in a matched manner with the closed loop of the cutting wire, and the tension detection mechanism, the wire tensioning guide wheel and a driving motor are matched with each other to realize automatic adjustment of tension on the cutting wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121517612.XU CN215356587U (en) | 2021-07-05 | 2021-07-05 | Automatic wire tightening mechanism with constant tension and wire moving cutting machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121517612.XU CN215356587U (en) | 2021-07-05 | 2021-07-05 | Automatic wire tightening mechanism with constant tension and wire moving cutting machine |
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| CN215356587U true CN215356587U (en) | 2021-12-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114506739A (en) * | 2022-01-20 | 2022-05-17 | 新华都特种电气股份有限公司 | Constant tension buffer mechanism for transformer winding and transformer winding production equipment |
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2021
- 2021-07-05 CN CN202121517612.XU patent/CN215356587U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114506739A (en) * | 2022-01-20 | 2022-05-17 | 新华都特种电气股份有限公司 | Constant tension buffer mechanism for transformer winding and transformer winding production equipment |
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