CN113928892A - Constant tension adjusting mechanism and control method thereof - Google Patents

Constant tension adjusting mechanism and control method thereof Download PDF

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Publication number
CN113928892A
CN113928892A CN202111424644.XA CN202111424644A CN113928892A CN 113928892 A CN113928892 A CN 113928892A CN 202111424644 A CN202111424644 A CN 202111424644A CN 113928892 A CN113928892 A CN 113928892A
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CN
China
Prior art keywords
processed
guide wheel
value
stress
constant tension
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Pending
Application number
CN202111424644.XA
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Chinese (zh)
Inventor
郑太福
张农民
李梓韬
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Jinbo New Material Technology Co ltd
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Jinbo New Material Technology Co ltd
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Priority to CN202111424644.XA priority Critical patent/CN113928892A/en
Publication of CN113928892A publication Critical patent/CN113928892A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H20/00—Advancing webs
    • B65H20/02—Advancing webs by friction roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/16—Registering, tensioning, smoothing or guiding webs longitudinally by weighted or spring-pressed movable bars or rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
    • B65H23/188—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web
    • B65H23/1888—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web and controlling web tension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/26—Registering, tensioning, smoothing or guiding webs longitudinally by transverse stationary or adjustable bars or rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00—Forwarding filamentary material
    • B65H51/02—Rotary devices, e.g. with helical forwarding surfaces
    • B65H51/04—Rollers, pulleys, capstans, or intermeshing rotary elements
    • B65H51/08—Rollers, pulleys, capstans, or intermeshing rotary elements arranged to operate in groups or in co-operation with other elements
    • B65H51/10—Rollers, pulleys, capstans, or intermeshing rotary elements arranged to operate in groups or in co-operation with other elements with opposed coacting surfaces, e.g. providing nips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H57/00—Guides for filamentary materials; Supports therefor
    • B65H57/14—Pulleys, rollers, or rotary bars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
    • B65H59/36—Floating elements compensating for irregularities in supply or take-up of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/11—Dimensional aspect of article or web
    • B65H2701/113—Size
    • B65H2701/1133—Size of webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/36—Wires

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  • Tension Adjustment In Filamentary Materials (AREA)

Abstract

The invention provides a constant tension adjusting mechanism and a control method of the constant tension adjusting mechanism. The constant tension adjusting mechanism comprises a feeding mechanism, a discharging mechanism and a guide wheel mechanism. The guide wheel mechanism is arranged between the feeding mechanism and the discharging mechanism, and the material to be processed enters the discharging mechanism through the guide wheel mechanism after being conveyed by the feeding mechanism. The guide wheel mechanism comprises a tension guide wheel, a stress sensor, a linear driving piece, a balance weight and a controller. The tension guide wheel is installed in a swinging and hinged mode through a swinging arm piece, the linear driving piece is installed on the swinging arm piece along the length of the swinging arm piece, and the balance weight is installed at the driving end of the linear driving piece. According to the technical scheme, the stress value of the material to be processed can be adjusted within a constant range through the closed-loop control, so that the material to be processed meets related processing requirements.

Description

Constant tension adjusting mechanism and control method thereof
Technical Field
The invention relates to the technical field of machining, in particular to a constant tension adjusting mechanism and a control method of the constant tension adjusting mechanism.
Background
Tension is generally understood to be the force generated by deformation, such as the tension of a rope or various straps, and is the pulling force generated by pulling the two ends to slightly deform them. Within the elastic limit, the deformation of the object under the action of external force is in direct proportion to the external force.
In some metal strip processes, a certain tension is applied to the metal strip, and then the metal strip is subjected to a heating process or other processes. Due to the material, some metal strips have a very small cross-section and are themselves very sensitive to deformation in response to the tension to which they are subjected. If the tension is too high, the metal strip is easily broken, while if the tension is too low, the processing conditions of the metal strip are not satisfied.
The coiled metal strip is processed by conveying the metal strip from a spool while applying tension to the metal strip. In the prior art, weights and associated guide wheel mechanisms are typically relied upon to apply tension to the metal strip. However, because the winding force of the metal belt on the spool is not constant, the tension finally exerted on the metal belt by the weight through the guide wheel mechanism is not constant, and finally the tension exerted on the metal belt cannot meet the processing condition.
Disclosure of Invention
The invention mainly aims to provide a constant tension adjusting mechanism and a control method of the constant tension adjusting mechanism, and aims to solve the technical problem that the constant tension adjusting mechanism in the prior art has poor effect of applying constant tension to a material to be processed.
In order to achieve the above object, according to one aspect of the present invention, there is provided a constant tension adjusting mechanism including: the feeding mechanism is used for conveying a material to be processed; the discharging mechanism is used for receiving the material to be processed and sending the material to be processed out; guide wheel mechanism installs between feeding mechanism and discharge mechanism, treats that the processing material is carried the back by feeding mechanism, gets into discharge mechanism through guide wheel mechanism again, and guide wheel mechanism includes: the tension guide wheel is arranged in a hinged mode through the swing arm piece in a swinging mode and used for applying tension to the material to be processed; the stress sensor is used for measuring a stress value on the material to be processed; a linear drive mounted on the swinging arm member along a length of the swinging arm member; the balance weight is arranged at the driving end of the linear driving piece; and the controller is electrically connected with the stress sensor and the linear driving piece respectively, acquires a stress value measured by the stress sensor, and controls the linear driving piece to drive the balance weight to move on the swing arm piece according to the stress value.
In one embodiment, the guide wheel mechanism further comprises an angle sensor, the angle sensor is used for detecting a swing angle value of the swing arm component, the controller is electrically connected with the angle sensor, and the controller obtains the swing angle value and controls the movement speed of the linear driving component to drive the balance weight according to the swing angle value.
In one embodiment, the guide wheel mechanism further comprises a position sensor, the position sensor is used for detecting a movement speed value of the counterweight, the controller is electrically connected with the position sensor, and the controller acquires the movement speed value and controls the movement speed of the linear driving piece driving the counterweight according to the movement speed value.
In one embodiment, the linear drive is a spindle nut or an electric or pneumatic cylinder or a hydraulic or electric push rod.
In one embodiment, the feed mechanism comprises: the first driving motor is used for driving the reel to rotate so as to convey the material to be processed; alternatively, the feeding mechanism comprises: the device comprises a first driving motor and at least one pair of feeding rollers, wherein the at least one pair of feeding rollers are used for pressing materials to be processed, and the first driving motor is used for driving the feeding rollers to rotate so as to convey the materials to be processed.
In one embodiment, the outfeed mechanism comprises: the second driving motor is used for driving the discharging rollers to rotate so as to send out the materials to be processed.
In one embodiment, a stress sensor is mounted on the tension guide wheel, and the stress sensor is used for measuring the stress value of the material to be processed on the tension guide wheel.
In one embodiment, the guide wheel mechanism further comprises a guide wheel fixedly mounted for guiding the material to be processed.
In one embodiment, the guide wheel mechanism further comprises a sensing guide wheel, the sensing guide wheel is fixedly installed, the stress sensor is installed on the sensing guide wheel, and the stress sensor is used for measuring the stress value of the material to be processed on the sensing guide wheel.
In one embodiment, there are two guide pulleys, one guide pulley mounted upstream of the sensor pulley, the tension pulley mounted downstream of the sensor pulley, and the other guide pulley mounted downstream of the tension pulley.
In one embodiment, the weight is a plurality of weights, which are selectively mounted at the drive end of the linear drive.
In order to achieve the above object, according to an aspect of the present invention, there is provided a control method of a constant tension adjusting mechanism, the control method being for controlling the constant tension adjusting mechanism described above, the control method including: when the stress value detected by the stress sensor is smaller than a first preset value, controlling the linear driving piece to drive the balance weight to move on the swing arm piece towards the direction away from the hinge point; when the stress value detected by the stress sensor is larger than a first preset value, the linear driving piece is controlled to drive the balance weight to move on the swing arm piece towards the direction close to the hinge point.
In one embodiment, when the change amount of the stress value detected by the stress sensor in unit time is larger than a second preset value, the movement speed of the counterweight driven by the linear driving piece on the swing arm piece is reduced.
In one embodiment, a control method is used for the constant tension adjusting mechanism described above, the control method including: when the variation of the swing angle value detected by the angle sensor is larger than a third preset value, the movement speed of the balance weight driven by the linear driving piece on the swing arm piece is reduced.
In one embodiment, a control method is used for the constant tension adjusting mechanism described above, the control method including: when the variation of the motion speed value detected by the position sensor is larger than a third preset value, the motion speed of the counterweight driven by the linear driving piece on the swing arm piece is reduced.
By applying the technical scheme of the invention, the stress value of the material to be processed is measured by the stress sensor, and when the stress value of the material to be processed is changed greatly, the controller controls the linear driving piece to drive the balance weight to move on the swing arm piece to adjust the stress value of the material to be processed. The specific principle is that the counterweight moves on the swinging arm component, the distance from the counterweight to the hinge point can be changed, and then the moment from the tension guide wheel to the hinge point is changed, so that the force applied to the material to be processed by the tension guide wheel can be changed, and the effect of adjusting the stress value on the material to be processed is achieved. Compared with the prior art, the technical scheme of the invention can realize closed-loop control of the stress value on the material to be processed through the stress sensor, the controller and the linear driving piece, and can adjust the stress value on the material to be processed within a constant range through the closed-loop control even if the stress value on the material to be processed is greatly changed due to other reasons, so that the material to be processed meets related processing requirements.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural view showing a first embodiment of a constant tension adjusting mechanism according to the present invention;
FIG. 2 is a schematic structural view showing a second embodiment of the constant tension adjusting mechanism according to the present invention;
fig. 3 is a schematic structural view showing an embodiment three of the constant tension adjusting mechanism according to the present invention;
fig. 4 is a partial schematic structural view showing a fourth embodiment of the constant tension adjusting mechanism according to the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances for describing embodiments of the invention herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Fig. 1 shows a first embodiment of the constant tension adjusting mechanism of the present invention, which includes a feeding mechanism 10, a discharging mechanism 20, and a guide wheel mechanism 30. The feeding mechanism 10 is used for conveying a material L to be processed, and the discharging mechanism 20 is used for receiving the material L to be processed and sending out the material L to be processed. The guide wheel mechanism 30 is installed between the feeding mechanism 10 and the discharging mechanism 20, and the material L to be processed is conveyed by the feeding mechanism 10, passes through the guide wheel mechanism 30 and then enters the discharging mechanism 20. Idler mechanism 30 includes a tension idler 31, a stress sensor 32, a linear drive 33, a counterweight 34, and a controller 35. Wherein the tension guide wheel 31 is pivotally mounted via a swinging arm member 38 for applying tension to the material L to be processed, the stress sensor 32 is for measuring the stress value on the material L to be processed, the linear driving member 33 is mounted on the swinging arm member 38 along the length of the swinging arm member 38, and the counterweight 34 is mounted at the driving end of the linear driving member 33. In the using process, the controller 35 is electrically connected with the stress sensor 32 and the linear driving member 33, respectively, and the controller 35 obtains the stress value measured by the stress sensor 32 and controls the linear driving member 33 to drive the counterweight 34 to move on the swing arm member 38 according to the stress value.
By applying the technical scheme of the invention, the stress value of the material L to be processed is measured by the stress sensor 32, and when the stress value of the material L to be processed is changed greatly, the controller 35 controls the linear driving piece 33 to drive the balance weight 34 to move on the swing arm piece 38 to adjust the stress value of the material L to be processed. The specific principle is that the movement of the counterweight 34 on the swing arm piece 38 changes the distance from the counterweight 34 to the hinge point, and further changes the moment from the tension guide wheel 31 to the hinge point, so that the force applied by the tension guide wheel 31 to the material L to be processed can be changed, and the effect of adjusting the stress value on the material L to be processed is achieved. Compared with the prior art, the technical scheme of the invention can realize closed-loop control of the stress value on the material L to be processed through the stress sensor 32, the controller 35 and the linear driving element 33, and can adjust the stress value on the material L to be processed within a constant range through the closed-loop control even if the stress value on the material L to be processed is greatly changed due to other reasons, so that the material L to be processed meets related processing requirements.
As shown in fig. 1 and 3, the tension on the material L to be processed is F1By adjusting the weight to G2The distance from the counterweight to the hinge point can realize G on the tension guide wheel 311So as to adjust the tension F on the material L to be processed1。
Specifically, the use method of the constant tension adjusting mechanism comprises the following steps:
when the stress value detected by the stress sensor 32 is smaller than a first preset value, the linear driving part 33 is controlled to drive the counterweight 34 to move on the swing arm part 38 in a direction away from the hinge point;
when the stress value detected by the stress sensor 32 is larger than a first predetermined value, the linear driving member 33 is controlled to drive the counterweight 34 to move on the swing arm member 38 toward the direction close to the hinge point.
It should be noted that the first predetermined value may be a point value or a range value. When the first predetermined value is a range value, a stress value less than the first predetermined value means a stress value less than a minimum value of the range value, and a stress value greater than the first predetermined value means a stress value greater than a maximum value of the range value.
Furthermore, it is more important to prevent the material to be worked L from being broken by an excessively large variation range of the stress value when the stress value on the material to be worked L is adjusted. In the technical scheme of the invention, when the variation of the stress value detected by the stress sensor 32 in unit time is greater than a second preset value, the movement speed of the linear driving piece 33 driving the balance weight 34 on the swing arm piece 38 is reduced, so that the speed of the tension guide wheel 31 for adjusting the stress value on the material to be processed L can be reduced, and the breakage caused by too large variation amplitude of the stress value on the material to be processed L is avoided.
As another alternative embodiment not shown in the drawings, the guide wheel mechanism 30 may further include an angle sensor for detecting a swing angle value of the swing arm 38, the controller 35 is electrically connected to the angle sensor, and the controller 35 obtains the swing angle value and controls a moving speed of the linear driving member 33 to drive the counterweight 34 according to the swing angle value. The difference between this embodiment and the above embodiment is that the amplitude of the change in the stress value on the material L to be processed can be indirectly obtained by detecting the swing angle value of the swing arm 38. When the variation range of the swing angle value is too large, the variation range of the stress value on the material L to be processed can be reflected to be too large, and then the controller 35 can control the linear driving piece 33 to drive the movement speed of the counterweight 34 to be reduced, so that the material L to be processed with the too large variation range is prevented from being broken when the stress value on the material L to be processed is adjusted.
As another alternative embodiment not shown in the drawings, the guide wheel mechanism 30 further includes a position sensor, the position sensor is used for detecting a movement speed value of the counterweight 34, the controller 35 is electrically connected to the position sensor, and the controller 35 obtains the movement speed value and controls the movement speed of the linear driving member 33 to drive the counterweight 34 according to the movement speed value. The difference between this embodiment and the above embodiment is that the magnitude of the change in the stress value on the material L to be processed can be indirectly known by detecting the value of the movement velocity of the counterweight 34. When the variation range of the movement speed of the counterweight 34 is too large, the too large variation range of the stress value on the material to be processed L can be reflected, and then the controller 35 can control the linear driving part 33 to drive the movement speed of the counterweight 34 to be reduced, so that the material to be processed L is prevented from being broken when the stress value on the material to be processed L is adjusted.
As shown in fig. 2 and 3, in the second and third embodiments, the linear driving member 33 is a screw nut member. The linear driving member 33 includes a motor 331, a lead screw 322, and a sliding block, wherein the motor 331 drives the lead screw 322 to rotate, the lead screw 322 cooperates with the nut structure on the sliding block, so that the sliding block slides on the swing arm member 38, and the sliding block drives the counterweight 34 to move. As other alternative embodiments not shown in the drawings, the linear driving element 33 may be an electric cylinder, an air cylinder, a hydraulic cylinder or an electric push rod, and the above-mentioned four common linear driving elements 33 may also function to drive the counterweight 34 to move.
As shown in fig. 4, the present invention further provides a fourth embodiment of a constant tension adjusting mechanism, and compared with the technical solutions of the above embodiments, in the technical solution of the fourth embodiment, a plurality of weights 34 are provided, and the plurality of weights 34 are selectively installed at the driving end of the linear driving element 33. Therefore, the mass of the counterweight 34 can be changed according to the requirement of applying tension to the material L to be processed, and the counterweight 34 is suitable for adjusting the tension in different ranges.
As shown in fig. 1, in the first embodiment, the feeding mechanism 10 includes a first driving motor and a reel, the reel is used for installing the spool, and the first driving motor is used for driving the reel to rotate to convey the material L to be processed. When the wire winding machine is used, the first driving motor drives the reel to rotate, so that the wire winding wheel arranged on the reel can perform wire unwinding. As another alternative, as shown in fig. 2, in the second embodiment, the feeding mechanism 10 includes a first driving motor and at least one pair of feeding rollers 11, the at least one pair of feeding rollers 11 is used for pressing the material L to be processed, and the first driving motor is used for driving the feeding rollers 11 to rotate to convey the material L to be processed. When the device is used, the first driving motor is in driving connection with one of the pair of feeding rollers 11, the feeding roller 11 serves as a driving wheel, the other feeding roller 11 serves as a driven wheel, the material L to be processed is pressed through the pair of feeding rollers 11, and the material L to be processed is conveyed through the rotating friction force.
As shown in fig. 1, 2 and 3, in the first to third embodiments, the discharging mechanism 20 includes a second driving motor and at least one pair of discharging rollers 21, the discharging rollers 21 are used for pressing the material L to be processed, and the second driving motor is used for driving the discharging rollers 21 to rotate to send out the material L to be processed. When the material feeding device is used, the second driving motor is in driving connection with one of the pair of discharging rollers 21, the discharging roller 21 serves as a driving wheel, the other discharging roller 21 serves as a driven wheel, the material L to be processed is pressed through the pair of discharging rollers 21, and the material L to be processed is sent out through the rotating friction force.
As shown in fig. 2, in the second embodiment, a stress sensor 32 is installed on the tension guide wheel 31, and the stress sensor 32 is used for measuring a stress value of the material L to be processed on the tension guide wheel 31. By measuring the stress value of the material to be processed L on the tension guide wheel 31, the tension on the material to be processed L can be reflected, so that the linear driving piece 33 can be operated conveniently to adjust the force exerted by the tension guide wheel 31 on the material to be processed L.
As shown in fig. 1, in the solution of the first embodiment, the guide wheel mechanism 30 further includes a guide wheel 36, and the guide wheel 36 is fixedly installed to guide the material L to be processed. The material L to be processed is guided by the guide roller 36 so that the tension roller 31 applies tension to the material L to be processed. Optionally, in the technical solution of the first embodiment, the number of the guide pulleys 36 is 3, 1 corresponds to the feeding mechanism 10, 1 corresponds to the tension guide pulley 31, and 1 corresponds to the discharging mechanism 20. Optionally, in the technical solution of the second embodiment, the feeding roller 11 may also function to guide the material L to be processed, so that 2 guiding rollers 36 are provided, 1 corresponding to the tension guiding roller 31, and 1 corresponding to the discharging mechanism 20. Similarly, in the second embodiment, the feeding roller 11 can also guide the material L to be processed, so that the number of the guide rollers 36 is 2.
Different from the second embodiment, in the third embodiment, as shown in fig. 3, the guide wheel mechanism 30 further includes a sensing guide wheel 37, the sensing guide wheel 37 is fixedly installed, the stress sensor 32 is installed on the sensing guide wheel 37, and the stress sensor 32 is used for measuring a stress value of the material L to be processed on the sensing guide wheel 37. In this embodiment, one guide roller 36 is used as the sensor roller 37, and by installing the stress sensor 32 on the sensor roller 37, the measurement of the tension of the material L to be processed can be also performed. In this embodiment, there are two guide rollers 36, one guide roller 36 being mounted upstream of sensing roller 37, tension roller 31 being mounted downstream of sensing roller 37, and the other guide roller 36 being mounted downstream of tension roller 31.
Alternatively, in use, the stress sensor 32 may be mounted on a base to which the tension guide roller 31 or the sensing guide roller 37 is mounted.
It should be noted that the material L to be processed is a wire or a strip, and the wire or the strip may be a metal material, a non-metal material, or a composite material.
The invention also provides a control method of the constant tension adjusting mechanism, which is used for controlling the constant tension adjusting mechanism and comprises the following steps:
when the stress value detected by the stress sensor 32 is smaller than a first preset value, the linear driving part 33 is controlled to drive the counterweight 34 to move on the swing arm part 38 in a direction away from the hinge point;
when the stress value detected by the stress sensor 32 is larger than a first predetermined value, the linear driving member 33 is controlled to drive the counterweight 34 to move on the swing arm member 38 toward the direction close to the hinge point.
The specific principle is that the movement of the counterweight 34 on the swing arm piece 38 changes the distance from the counterweight 34 to the hinge point, and further changes the moment from the tension guide wheel 31 to the hinge point, so that the force applied by the tension guide wheel 31 to the material L to be processed can be changed, and the effect of adjusting the stress value on the material L to be processed is achieved. Compared with the prior art, the technical scheme of the invention can realize closed-loop control of the stress value on the material L to be processed through the stress sensor 32, the controller 35 and the linear driving piece 33, and can adjust the stress value on the material L to be processed within a constant range through the closed-loop control even if the stress value on the material L to be processed is greatly changed due to other reasons, so that the material L to be processed meets related processing requirements
It should be noted that the first predetermined value may be a point value or a range value. When the first predetermined value is a range value, a stress value less than the first predetermined value means a stress value less than a minimum value of the range value, and a stress value greater than the first predetermined value means a stress value greater than a maximum value of the range value.
The control method further comprises the following steps: when the change amount of the stress value detected by the stress sensor 32 in unit time is larger than a second predetermined value, the moving speed of the linear driving part 33 driving the balance weight 34 on the swing arm part 38 is reduced. This can prevent the material to be machined L from breaking when the magnitude of change in the stress value is too large when the stress value on the material to be machined L is adjusted.
In addition to the above control method, the control method may be:
the guide wheel mechanism 30 includes an angle sensor, the angle sensor detects a swing angle value of the swing arm 38, the controller 35 is electrically connected to the angle sensor, and the controller 35 obtains the swing angle value and controls a movement speed of the linear driving member 33 driving the counterweight 34 according to the swing angle value. When the variation of the swing angle value detected by the angle sensor is greater than the third predetermined value, the moving speed of the linear driving element 33 driving the counterweight 34 on the swing arm element 38 is reduced.
The difference between this embodiment and the above embodiment is that the amplitude of the change in the stress value on the material L to be processed can be indirectly obtained by detecting the swing angle value of the swing arm 38. When the variation range of the swing angle value is too large, the variation range of the stress value on the material L to be processed can be reflected to be too large, and then the controller 35 can control the linear driving piece 33 to drive the movement speed of the counterweight 34 to be reduced, so that the material L to be processed with the too large variation range is prevented from being broken when the stress value on the material L to be processed is adjusted.
In addition to the above control method, the control method may be:
the guide wheel mechanism 30 includes a position sensor, the position sensor detects a movement speed value of the counterweight 34, the controller 35 is electrically connected to the position sensor, and the controller 35 obtains the movement speed value and controls the movement speed of the linear driving member 33 driving the counterweight 34 according to the movement speed value. When the variation of the movement speed value detected by the position sensor is larger than a third predetermined value, the movement speed of the linear driving element 33 driving the balance weight 34 on the swing arm member 38 is reduced.
The difference between this embodiment and the above embodiment is that the magnitude of the change in the stress value on the material L to be processed can be indirectly known by detecting the value of the movement velocity of the counterweight 34. When the variation range of the movement speed of the counterweight 34 is too large, the too large variation range of the stress value on the material to be processed L can be reflected, and then the controller 35 can control the linear driving part 33 to drive the movement speed of the counterweight 34 to be reduced, so that the material to be processed L is prevented from being broken when the stress value on the material to be processed L is adjusted.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (15)

1. A constant tension adjustment mechanism, comprising:
a feeding mechanism (10) for conveying a material (L) to be processed;
the discharging mechanism (20) is used for receiving the material (L) to be processed and sending out the material (L) to be processed;
the guide wheel mechanism (30) is installed between the feeding mechanism (10) and the discharging mechanism (20), the material (L) to be processed is conveyed by the feeding mechanism (10) and then enters the discharging mechanism (20) through the guide wheel mechanism (30), and the guide wheel mechanism (30) comprises:
a tension guide wheel (31) which is pivotally mounted via a swinging arm (38) and is used for applying tension to the material (L) to be processed;
a stress sensor (32) for measuring a stress value on the material (L) to be worked;
a linear drive (33) mounted on the swing arm (38) along the length of the swing arm (38);
a counterweight (34) mounted at the drive end of the linear drive (33);
and the controller (35) is electrically connected with the stress sensor (32) and the linear driving part (33) respectively, and the controller (35) acquires a stress value measured by the stress sensor (32) and controls the linear driving part (33) to drive the balance weight (34) to move on the swinging arm part (38) according to the stress value.
2. The constant tension adjusting mechanism according to claim 1, wherein the guide wheel mechanism (30) further comprises an angle sensor for detecting a swing angle value of the swing arm member (38), the controller (35) is electrically connected to the angle sensor, and the controller (35) obtains the swing angle value and controls a moving speed of the linear driving member (33) driving the counterweight (34) according to the swing angle value.
3. The constant tension adjusting mechanism according to claim 1, wherein the guide wheel mechanism (30) further comprises a position sensor for detecting a motion speed value of the counterweight (34), the controller (35) is electrically connected to the position sensor, the controller (35) obtains the motion speed value and controls the motion speed of the linear driving member (33) driving the counterweight (34) according to the motion speed value.
4. Constant tension adjusting mechanism according to claim 1, characterized in that the linear drive (33) is a lead screw nut member or an electric or pneumatic or hydraulic or electric push rod.
5. The constant tension adjustment mechanism according to claim 1, wherein the feeding mechanism (10) comprises:
a first driving motor and a reel, wherein the reel is used for installing a wire wheel, and the first driving motor is used for driving the reel to rotate so as to convey the material (L) to be processed;
alternatively, the feeding mechanism (10) comprises:
the device comprises a first driving motor and at least one pair of feeding rollers (11), wherein the at least one pair of feeding rollers (11) is used for pressing the material (L) to be processed, and the first driving motor is used for driving the feeding rollers (11) to rotate so as to convey the material (L) to be processed.
6. The constant tension adjustment mechanism of claim 1, wherein the outfeed mechanism (20) comprises:
the material conveying device comprises a second driving motor and at least one pair of discharging rollers (21), wherein the discharging rollers (21) are used for pressing the material (L) to be processed, and the second driving motor is used for driving the discharging rollers (21) to rotate so as to send out the material (L) to be processed.
7. The constant tension adjusting mechanism according to claim 1, characterized in that the stress sensor (32) is mounted on the tension guide wheel (31), the stress sensor (32) being configured to measure a stress value of the material to be processed (L) on the tension guide wheel (31).
8. The constant tension adjusting mechanism according to claim 1, wherein the guide wheel mechanism (30) further comprises a guide wheel (36), the guide wheel (36) being fixedly mounted for guiding the material (L) to be processed.
9. The constant tension adjusting mechanism according to claim 8, wherein the guide wheel mechanism (30) further comprises a sensing guide wheel (37), the sensing guide wheel (37) is fixedly installed, the stress sensor (32) is installed on the sensing guide wheel (37), and the stress sensor (32) is used for measuring the stress value of the material (L) to be processed on the sensing guide wheel (37).
10. Constant tension adjusting mechanism according to claim 9, characterized in that the guide pulleys (36) are two, one guide pulley (36) being mounted upstream of the sensing pulley (37), the tension pulley (31) being mounted downstream of the sensing pulley (37), the other guide pulley (36) being mounted downstream of the tension pulley (31).
11. The constant tension adjustment mechanism of claim 1, wherein the weight (34) is plural, and plural weights (34) are selectively mounted at a driving end of the linear driving member (33).
12. A control method of a constant tension adjusting mechanism, the control method being used for controlling the constant tension adjusting mechanism according to any one of claims 1 to 11, the control method comprising:
when the stress value detected by the stress sensor (32) is smaller than a first preset value, controlling the linear driving part (33) to drive the balance weight (34) to move on the swinging arm part (38) in a direction away from a hinge point;
when the stress value detected by the stress sensor (32) is larger than a first preset value, the linear driving part (33) is controlled to drive the balance weight (34) to move on the swinging arm part (38) towards the direction close to the hinge point.
13. The control method according to claim 12, characterized in that when the change amount of the stress value detected by the stress sensor (32) in unit time is larger than a second predetermined value, the moving speed of the linear driving member (33) driving the balance weight (34) on the swinging arm member (38) is reduced.
14. The control method according to claim 12, for controlling the constant tension adjusting mechanism according to claim 2, the control method comprising:
when the variation of the swing angle value detected by the angle sensor is larger than a third preset value, the movement speed of the linear driving piece (33) driving the balance weight (34) on the swing arm piece (38) is reduced.
15. The control method according to claim 12, for controlling the constant tension adjusting mechanism according to claim 3, the control method comprising:
when the variation of the motion speed value detected by the position sensor is larger than a third preset value, the motion speed of the counterweight (34) on the swinging arm component (38) driven by the linear driving component (33) is reduced.
CN202111424644.XA 2021-11-26 2021-11-26 Constant tension adjusting mechanism and control method thereof Pending CN113928892A (en)

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CN202111424644.XA CN113928892A (en) 2021-11-26 2021-11-26 Constant tension adjusting mechanism and control method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111424644.XA CN113928892A (en) 2021-11-26 2021-11-26 Constant tension adjusting mechanism and control method thereof

Publications (1)

Publication Number Publication Date
CN113928892A true CN113928892A (en) 2022-01-14

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Family Applications (1)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202200007304A1 (en) * 2022-04-13 2023-10-13 Atop Spa CABLE TENSIONING GROUP FOR FORMING ELECTRICAL WINDING COMPONENTS.
CN117819298A (en) * 2024-03-06 2024-04-05 常州宏大智慧科技有限公司 Wire belt tension control device and wire belt conveying assembly applying same
CN117819298B (en) * 2024-03-06 2024-05-28 常州宏大智慧科技有限公司 Wire belt tension control device and wire belt conveying assembly applying same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202200007304A1 (en) * 2022-04-13 2023-10-13 Atop Spa CABLE TENSIONING GROUP FOR FORMING ELECTRICAL WINDING COMPONENTS.
WO2023198831A1 (en) * 2022-04-13 2023-10-19 Atop S.P.A. Assembly for tensioning wires for forming components of electrical windings
CN117819298A (en) * 2024-03-06 2024-04-05 常州宏大智慧科技有限公司 Wire belt tension control device and wire belt conveying assembly applying same
CN117819298B (en) * 2024-03-06 2024-05-28 常州宏大智慧科技有限公司 Wire belt tension control device and wire belt conveying assembly applying same

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