CN112093567A - Early warning device for realizing multistage material change alarm stepless switching based on film constant-speed unwinding - Google Patents
Early warning device for realizing multistage material change alarm stepless switching based on film constant-speed unwinding Download PDFInfo
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- CN112093567A CN112093567A CN202011128024.7A CN202011128024A CN112093567A CN 112093567 A CN112093567 A CN 112093567A CN 202011128024 A CN202011128024 A CN 202011128024A CN 112093567 A CN112093567 A CN 112093567A
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- early warning
- unwinding
- follow
- warning device
- accommodating cavity
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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
- B65H43/00—Use of control, checking, or safety devices, e.g. automatic devices comprising an element for sensing a variable
- B65H43/02—Use of control, checking, or safety devices, e.g. automatic devices comprising an element for sensing a variable detecting, or responding to, absence of articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H16/00—Unwinding, paying-out webs
- B65H16/02—Supporting web roll
- B65H16/06—Supporting web roll both-ends type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2553/00—Sensing or detecting means
- B65H2553/20—Sensing or detecting means using electric elements
- B65H2553/25—Contact switches
Abstract
The invention relates to an early warning device for realizing stepless switching of multi-stage material change alarms based on constant-speed unwinding of a film, which comprises: the device comprises a support frame, an unreeling roller, an unreeling driving device and a material shortage early warning device; the unwinding roller is rotatably arranged on the support frame, and the unwinding driving device is arranged on the support frame; lack material early warning device includes: the follow-up rotary table, the follow-up rotary column, the switch conducting piece, the insulating spring and the multiple groups of conductive switch contact groups; the follow-up turntable is rotatably arranged on the support frame and is connected with the unreeling roller; the follow-up rotary column is connected with the follow-up rotary disc, and the follow-up rotary column is provided with an accommodating cavity, and the switch conducting piece and the insulating spring are accommodated in the accommodating cavity. The early warning device for realizing the stepless switching of the multi-stage material changing alarms based on the uniform-speed unwinding of the film realizes the multi-stage material changing alarms according to the residual quantity of the plastic film so as to remind workers of changing materials in time, thereby improving the production and processing efficiency of the plastic film; the staff can judge the urgency degree of feeding according to the level of the alarm and arrange the feeding sequence according to the urgency degree.
Description
Technical Field
The invention relates to the technical field of plastic film production and processing, in particular to an early warning device for realizing multistage material change alarm stepless switching based on constant-speed film unreeling.
Background
Plastic film is a very long, wide film structure that is typically stored by being wound onto a roll. When the novel paper roll needs to be used, the novel paper roll is unreeled out for use in a roll unreeling mode.
However, in the existing plastic film production line, in the process of unwinding and processing the film, the plastic film unwinding of the unwinding roller can be known to be finished when no plastic film arrives at the processing station. At the moment, the processing station can only be paused, and the reloading worker at the unreeling station is informed to reload. And after the material changing worker changes the material again, the plastic film is restored to the normal unreeling state again, and when the plastic film is conveyed to the processing station again, the processing station can restore to the normal processing state again. However, the processing station can only pause the processing operation from the time when the processing station finds that the plastic film is not supplied to the processing station to the time when the plastic film is completely replaced and is conveyed to the processing station. This results in inefficient production and processing of the plastic film.
The invention aims to research equipment capable of pre-warning material shortage when a plastic film is about to be unreeled so as to remind workers of replacing materials in time, and therefore the efficiency of plastic film production and processing is improved. And also. The invention continues to optimize to achieve multiple levels of warning based on the remaining amount of plastic film.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides the early warning device for realizing the stepless switching of the multi-stage material changing alarm based on the uniform-speed unwinding of the film, wherein the multi-stage material changing alarm is realized according to the residual quantity of the plastic film so as to remind workers of changing the material in time, so that the production and processing efficiency of the plastic film is improved; and the staff can judge the urgency degree of feeding according to the level of the alarm and arrange the material changing sequence according to the urgency degree.
The purpose of the invention is realized by the following technical scheme:
realize multistage electrodeless switching's of reloading alarm early warning equipment based on film unreels at the uniform velocity, include: the device comprises a support frame, an unreeling roller, an unreeling driving device and a material shortage early warning device; the unwinding roller is rotatably arranged on the support frame, and the unwinding driving device is arranged on the support frame;
the short-of-material early warning device comprises: the follow-up rotary table, the follow-up rotary column, the switch conducting piece, the insulating spring and the multiple groups of conductive switch contact groups; the follow-up turntable is rotatably arranged on the support frame and is connected with the unreeling roller; the follow-up rotary column is connected with the follow-up rotary disc, an accommodating cavity is formed in the follow-up rotary column, and the switch conducting piece and the insulating spring are accommodated in the accommodating cavity;
the insulating spring is arranged on the top wall of the accommodating cavity; the switch conducting piece is connected with the insulating spring and slides back and forth along the accommodating cavity towards the direction close to or far away from the insulating spring;
the conductive switch contact sets are arranged on the side wall of the accommodating cavity and are arranged at equal intervals along the central axis direction of the accommodating cavity; the switch conducting piece is contacted with one group of the conductive switch contact groups or separated from the plurality of groups of the conductive switch contact groups;
the material shortage early warning device also comprises an early warning driving power supply and a plurality of paths of LED early warning branches, wherein the plurality of paths of LED early warning branches are connected with the plurality of groups of conductive switch contact groups in series in a one-to-one correspondence manner to form a plurality of paths of series branches; and the plurality of series branches are connected in parallel and then connected with the early warning driving power supply.
In one embodiment, the set of conductive switch contacts includes two conductive contacts.
In one embodiment, two conductive contacts are distributed along the radial direction of the accommodating cavity.
In one embodiment, the accommodating cavity is a cylindrical cavity, the switch conducting piece is of a cylindrical structure, and the outer wall of the switch conducting piece is in contact with the side wall of the accommodating cavity.
In one embodiment, the conductive contact extends from a sidewall of the receiving cavity to outside the receiving cavity.
In one embodiment, the early warning driving power supply is fixed on a panel of the follow-up turntable.
In one embodiment, the servo turntable is provided with a containing cavity, and the early warning driving power supply is fixed in the containing cavity.
In one embodiment, the material shortage early warning device further comprises a buzzer, and the LED early warning branches are connected in parallel and then connected in series with the buzzer.
In one embodiment, the LED early warning branches include LED early warning lamps, and the LED early warning lamps are all disposed on the panel of the follow-up turntable.
In one embodiment, the unwinding driving device includes: the unwinding device comprises an unwinding driving motor, an unwinding driving rotating shaft and a free rotating shaft, wherein the unwinding driving rotating shaft is in driving connection with the unwinding driving motor and is rotatably arranged on the supporting frame; the free rotating shaft is rotatably arranged on the supporting frame, and the free rotating shaft is matched with the unreeling driving rotating shaft to clamp and transmit the plastic film.
The early warning device for realizing the stepless switching of the multi-stage material changing alarms based on the uniform-speed unwinding of the film realizes the multi-stage material changing alarms according to the residual quantity of the plastic film so as to remind workers of changing materials in time, thereby improving the production and processing efficiency of the plastic film; and the staff can judge the urgency degree of feeding according to the level of the alarm and arrange the material changing sequence according to the urgency degree.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram (one) of an early warning device for realizing multistage material change alarm stepless switching based on film constant-speed unwinding according to the present invention;
fig. 2 is a schematic structural diagram (ii) of the early warning device for realizing multistage material change alarm stepless switching based on film constant-speed unwinding of the invention;
fig. 3 is a state diagram of the pre-warning device for realizing multistage feed change alarm stepless switching based on film constant-speed unwinding and not unwinding a plastic film, shown in fig. 1;
FIG. 4 is a schematic structural diagram of the short-feeding warning device shown in FIG. 1;
FIG. 5 is a schematic view (I) of a part of the material shortage warning device shown in FIG. 4;
FIG. 6 is a schematic view (II) of a part of the structure of the short-feeding warning device shown in FIG. 4;
fig. 7 is a circuit connection diagram of the short-term warning device shown in fig. 1.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 and 2, the present invention discloses an early warning device 10 for implementing multistage material change alarm stepless switching based on film constant speed unwinding, including: the device comprises a support frame 20, an unwinding roller 30, an unwinding driving device 40 and a material shortage early warning device 50. The unwinding roller 30 is rotatably disposed on the supporting frame 20, and the unwinding driving device 40 is disposed on the supporting frame 20.
As shown in fig. 3 and 4, specifically, the material shortage warning device 50 includes: the switch comprises a follow-up rotary table 200, a follow-up rotary column 300, a switch conducting piece 400, an insulating spring 500 and a plurality of groups. The follow-up rotary table 200 is rotatably disposed on the supporting frame 20 and connected to the conductive switch contact group 600 of the unwinding roller 30. The follower rotary post 300 is connected to the follower rotary plate 200, the follower rotary post 300 is provided with a receiving cavity 310, and the switch conducting piece 400 and the insulating spring 500 are both received in the receiving cavity 310. The insulation spring 500 is disposed on the top wall of the receiving cavity 310; the switch conducting member 400 is connected to the insulation spring 500 and slides back and forth along the receiving cavity 310 in a direction approaching or separating from the insulation spring 500. The plurality of conductive switch contact sets 600 are disposed on the sidewall of the accommodating cavity 310 and are disposed at equal intervals along the central axis direction of the accommodating cavity 310. The switch conducting member 400 is in contact with one of the conductive switch contact sets 600 or is separated from the plurality of conductive switch contact sets 600. That is, the pitch of the two adjacent conductive switch contact groups 600 is identical to the length of the switch conducting member 400. This allows the switch conducting member 400 to be in contact with either none of the sets of conductive switch contacts 600 at all or only one of the sets of conductive switch contacts 600 in any state.
As shown in fig. 7, specifically, the material shortage warning device 50 further includes a warning driving power supply 700 and multiple LED warning branches 800, and the multiple LED warning branches 800 and the multiple conductive switch contact groups 600 are connected in series in a one-to-one correspondence to form multiple series branches. The multiple series branches are connected in parallel and then connected with the early warning driving power supply 700.
Specifically, the conductive switch contact set 600 includes two conductive contacts 610. And, two conductive contacts 610 are distributed along the radial direction of the receiving cavity 310.
As shown in fig. 4 and 5, in a preferred embodiment, the accommodating cavity 310 is a cylindrical cavity, and the switch conducting piece 400 has a cylindrical structure. The outer diameter of the switch conductive member 400 is identical to the diameter of the receiving cavity 310. That is, the outer diameter of the switch conductive member 400 contacts the sidewall of the receiving cavity 310. In a further preferred embodiment, the receiving cavity 310 is a cylindrical cavity, and the switch conducting member 400 is a cylindrical structure.
Specifically, as shown in fig. 6 and 7, the conductive contact 610 extends from the sidewall of the receiving cavity 310 to the outside of the receiving cavity 310. The warning driving power supply 700 is fixed on the panel of the follower turntable 200. Certainly, the early warning driving power supply 700 has other setting modes; for example: the follower turntable 200 has a receiving cavity (not shown) in which the warning driving power supply 700 is fixed. The conductive contact 610 extends out of the receiving cavity 310 and is connected to the warning driving power supply 700 through a wire.
As shown in fig. 6 and 7, specifically, the material shortage warning device 50 further includes a buzzer 900, and the multiple LED warning branches 800 are connected in parallel and then connected in series with the buzzer 900. Specifically, the LED warning branch 800 includes an LED warning light 810, and the LED warning lights 810 are all disposed on the panel of the follow-up turntable 200.
As shown in fig. 3, in detail, the unwinding driving device 40 includes: the unwinding device comprises an unwinding driving motor 401, an unwinding driving rotating shaft 402 and a free rotating shaft 403, wherein the unwinding driving rotating shaft 402 is in driving connection with the unwinding driving motor 401, and the unwinding driving rotating shaft 402 is rotatably arranged on the support frame 20; the free rotation shaft 403 is rotatably disposed on the supporting frame 20, and the free rotation shaft 403 cooperates with the unreeling driving rotation shaft 402 to clamp and transmit the plastic film 100.
As shown in fig. 7, specifically, the number of the conductive switch contact groups 600 is three, and specifically includes: a first conductive switch contact group 601, a second conductive switch contact group 602, and a third conductive switch contact group 603. Correspondingly, the number of the LED early warning branches 800 is three, which specifically includes: a first LED pre-warning branch 801, a second LED pre-warning branch 802, and a third LED pre-warning branch 803. The first LED early warning branch 801 includes a green LED early warning lamp, the second LED early warning branch 802 includes two yellow LED early warning lamps, and the third LED early warning branch 803 includes three red LED early warning lamps. The emergency degree of short of material is realized fast and accurately to the staff through the colour, the quantity of bright lamp. When one worker monitors a plurality of devices, the worker can arrange the material changing sequence according to the emergency degree of material shortage.
The working principle 10 of the early warning device for realizing stepless switching of multi-stage material change alarms based on constant-speed unwinding of the film is as follows (please refer to fig. 1 to 7):
the plastic film 100 unreeled from the unreeling roller 30 passes through the unreeling driving rotating shaft 402 and the free rotating shaft 403; the unreeling driving motor 401 drives the unreeling driving rotating shaft 402 to rotate at a constant speed, and at the moment, the unreeling driving rotating shaft 402 and the free rotating shaft 403 form clamping and conveying actions on the plastic film 100, so that the plastic film 100 is pulled to move at a constant speed; in the process, the unwinding roller 30 continuously rotates under the pulling of the plastic film 100 and unwinds the plastic film 100 at a constant speed;
it should be noted that, since the plastic film 100 is unreeled at a constant speed, when the remaining amount of the plastic film 100 wound on the unreeling roller 30 is large, the overall diameter of the unreeling roller 30 wound together with the plastic film 100 is large, and at this time, the speed of rotation of the unreeling roller 30 is slow; with the plastic film 100 being continuously unreeled, the overall diameter of the unreeling roller 30 wound together with the plastic film 100 is gradually reduced, and in order to maintain the constant speed unreeling of the plastic film 100, the speed of rotation of the unreeling roller 30 is faster and faster; when the residual amount of the plastic film 100 wound on the unwinding roller 30 is small, the overall diameter of the unwinding roller 30 wound together with the plastic film 100 is small, and at this time, the unwinding roller 30 rotates at a high speed;
in addition, it should be noted that the unwinding roller 30 drives the follower turntable 200 to rotate together when rotating; that is, when the rotation speed of the unwinding roller 30 is slow, the rotation speed of the follower turntable 200 is slow; when the rotation speed of the unwinding roller 30 is high, the rotation speed of the follow-up turntable 200 is high; since the follow-up rotary column 300 is connected with the follow-up rotary disc 200, the follow-up rotary column 300 rotates along with the follow-up rotary disc 200;
when the remaining amount of the plastic film 100 wound around the unwinding roller 30 is large, the unwinding roller 30 rotates at a low speed; at this time, the centrifugal force applied to the switch conducting piece 400 is small, and the pulling force of the insulating spring 500 on the switch conducting piece 400 is larger than the centrifugal force applied to the switch conducting piece 400; therefore, the switch conducting member 400 is kept separated from the conductive switch contact group 600 in the accommodating cavity 310;
with the continuous unwinding of the plastic film 100, the unwinding roller 30 rotates faster and faster, the centrifugal force applied to the switch conducting piece 400 is larger and larger, and when the centrifugal force applied to the switch conducting piece 400 is larger than the pulling force of the insulating spring 500, the switch conducting piece 400 starts to slide in the direction away from the insulating spring 500, that is, the switch conducting piece 400 slides in the direction close to the conductive switch contact group 600;
as the plastic film 100 is continuously unreeled, when the remaining amount of the plastic film 100 on the unreeling roller 30 reaches the early warning amount, the switch conducting piece 400 first contacts with the first conductive switch contact group 601; the first LED early warning lamp branch 801 is connected with the first conductive switch contact group 601 in series and then connected with the early warning driving power supply 700; therefore, the early warning driving power supply 700, the first conductive switch contact group 601, the first LED early warning branch 801 and the buzzer 900 form a closed loop, so that the first LED early warning branch 801 lights up green light and the buzzer 900 sounds an alarm to realize first-level material shortage early warning prompt;
with the plastic film 100 being continuously unreeled, the rotation speed of the unreeling roller 30 is continuously increased, and the switch conducting piece 400 gradually approaches the second conductive switch contact group 602 until contacting the second conductive switch contact group 602; since the distance between the first conductive switch contact group 601 and the second conductive switch contact group 602 is the same as the length of the switch conducting piece 400, when the switch conducting piece 400 is connected with the second conductive switch contact group 602, the switch conducting piece 400 is just separated from the first conductive switch contact group 601; at this time, the early warning driving power supply 700, the second conductive switch contact group 602, the second LED early warning branch 802 and the buzzer 900 form a closed loop, so that the second LED early warning branch 802 lights up yellow light and the buzzer 900 sounds an alarm, so as to realize secondary starved material early warning prompt;
with the plastic film 100 continuously unreeled, the rotation speed of the unreeling roller 30 continues to be increased, and the switch conducting piece 400 gradually approaches the third LED early warning branch 803 until contacting the third LED early warning branch 803; similarly, since the distance between the second conductive switch contact group 602 and the third LED early warning branch 803 is the same as the length of the switch conducting piece 400, when the switch conducting piece 400 contacts the third LED early warning branch 803, the switch conducting piece 400 is just separated from the second conductive switch contact group 602; at this time, the early warning driving power supply 700, the third conductive switch contact group 803, the third LED early warning branch and the buzzer 900 form a closed loop, so that the third LED early warning branch 803 lights up red light and the buzzer 900 sounds an alarm, so as to realize three-level starved early warning prompt; it should be noted that the material shortage early warning prompts in different levels are switched steplessly, that is, the material shortage early warning prompts in different levels are switched very stably and linked very compactly, and the phenomena of shell jamming or false alarm and the like cannot occur, so that the system stability of the early warning equipment is high;
according to the invention, three LED early warning lamps 810 (shown in figure 5) with different colors correspond to three levels of material shortage early warning prompts, when a worker manages a plurality of devices at the same time, if the devices send out the material shortage early warning prompts at the same time, the worker can judge the level of the material shortage early warning prompts (namely the emergency degree of material change) according to the colors of the LED early warning lamps 810, and then arrange the material change sequence according to the level of the material shortage early warning prompts;
certainly, it should be further described that the switch conducting piece 400 has gravity, and in order to reduce the influence of the gravity of the switch conducting piece 400 on the multi-stage refueling alarm and improve the precision and stability of the early warning device, the switch conducting piece 400 of the present invention adopts a hollow cylinder structure formed by conductive sheets; thus, the gravity of the switch conducting piece 400 is negligible with respect to the centrifugal force applied to the insulating spring 100 and the switch conducting piece 400;
it should be noted that if the warning prompt for material shortage is performed by simply lighting the lamp, the worker may easily neglect and fail to see the light in time; therefore, sound early warning is further carried out through the buzzer 900, so that the fact that workers receive the material shortage early warning prompt in time and change materials in time is guaranteed, and therefore the production and processing efficiency of the plastic film 100 is improved; in the material changing process, the unwinding roller 30 needs to be suspended, when the unwinding roller 30 stops rotating, the switch conducting piece 400 loses the centrifugal force, and at this time, the switch conducting piece 400 is reset to the state that the switch conducting piece 400 is separated from the conductive switch contact group 600 under the action of the elastic restoring force of the insulating spring 500.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides a realize electrodeless switching's of multistage reloading alarm early warning equipment based on film unreels at the uniform velocity which characterized in that includes: the device comprises a support frame, an unreeling roller, an unreeling driving device and a material shortage early warning device; the unwinding roller is rotatably arranged on the support frame, and the unwinding driving device is arranged on the support frame;
the short-of-material early warning device comprises: the follow-up rotary table, the follow-up rotary column, the switch conducting piece, the insulating spring and the multiple groups of conductive switch contact groups; the follow-up turntable is rotatably arranged on the support frame and is connected with the unreeling roller; the follow-up rotary column is connected with the follow-up rotary disc, an accommodating cavity is formed in the follow-up rotary column, and the switch conducting piece and the insulating spring are accommodated in the accommodating cavity;
the insulating spring is arranged on the top wall of the accommodating cavity; the switch conducting piece is connected with the insulating spring and slides back and forth along the accommodating cavity towards the direction close to or far away from the insulating spring;
the conductive switch contact sets are arranged on the side wall of the accommodating cavity and are arranged at equal intervals along the central axis direction of the accommodating cavity; the switch conducting piece is contacted with one group of the conductive switch contact groups or separated from the plurality of groups of the conductive switch contact groups;
the material shortage early warning device also comprises an early warning driving power supply and a plurality of paths of LED early warning branches, wherein the plurality of paths of LED early warning branches are connected with the plurality of groups of conductive switch contact groups in series in a one-to-one correspondence manner to form a plurality of paths of series branches; and the plurality of series branches are connected in parallel and then connected with the early warning driving power supply.
2. The early warning device for realizing multistage material change alarm electrodeless switching based on film constant-speed unwinding as claimed in claim 1, wherein the conductive switch contact group comprises two conductive contacts.
3. The early warning device for realizing multistage material change alarm stepless switching based on film constant-speed unwinding according to claim 2, wherein the two conductive contacts are distributed along the radial direction of the accommodating cavity.
4. The early warning device for realizing multistage material change alarm stepless switching based on film constant-speed unwinding as claimed in claim 3, wherein the accommodating cavity is a cylindrical cavity, the switch conducting piece is of a cylindrical structure, and the outer wall of the switch conducting piece is in contact with the side wall of the accommodating cavity.
5. The early warning device for realizing multistage material change alarm stepless switching based on film constant-speed unwinding as claimed in claim 4, wherein the conductive contact extends from the side wall of the accommodating cavity to the outside of the accommodating cavity.
6. The early warning device for realizing multistage material change alarm stepless switching based on film constant-speed unwinding as claimed in claim 5, wherein the early warning driving power supply is fixed on a panel of the follow-up turntable.
7. The early warning device for realizing multistage material change alarm stepless switching based on film constant-speed unwinding according to claim 5, wherein the follow-up turntable is provided with an accommodating cavity, and the early warning driving power supply is fixed in the accommodating cavity.
8. The early warning device for realizing multistage material change alarm stepless switching based on film constant-speed unwinding as claimed in claim 5, wherein the material shortage early warning device further comprises a buzzer, and the LED early warning branches are connected in parallel and then connected in series with the buzzer.
9. The early warning device for realizing multistage material change alarm stepless switching based on film constant-speed unwinding according to claim 5, wherein the LED early warning branches comprise LED early warning lamps, and the LED early warning lamps are arranged on a panel of the follow-up turntable.
10. The early warning device for realizing multistage material change alarm stepless switching based on film constant-speed unwinding according to claim 5, wherein the unwinding driving device comprises: the unwinding device comprises an unwinding driving motor, an unwinding driving rotating shaft and a free rotating shaft, wherein the unwinding driving rotating shaft is in driving connection with the unwinding driving motor and is rotatably arranged on the supporting frame; the free rotating shaft is rotatably arranged on the supporting frame, and the free rotating shaft is matched with the unreeling driving rotating shaft to clamp and transmit the plastic film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011128024.7A CN112093567A (en) | 2020-10-21 | 2020-10-21 | Early warning device for realizing multistage material change alarm stepless switching based on film constant-speed unwinding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011128024.7A CN112093567A (en) | 2020-10-21 | 2020-10-21 | Early warning device for realizing multistage material change alarm stepless switching based on film constant-speed unwinding |
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| CN112093567A true CN112093567A (en) | 2020-12-18 |
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|---|---|---|---|
| CN202011128024.7A Withdrawn CN112093567A (en) | 2020-10-21 | 2020-10-21 | Early warning device for realizing multistage material change alarm stepless switching based on film constant-speed unwinding |
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| CN101091199A (en) * | 2005-06-29 | 2007-12-19 | 哈莫尼克Ad股份有限公司 | Device with a brake, for opening and closing an opening/closing member |
| CN201660341U (en) * | 2010-01-28 | 2010-12-01 | 宁波大叶园林工业有限公司 | Slow retraction damping device for hose reel |
| CN108455381A (en) * | 2018-03-15 | 2018-08-28 | 深圳市齐创美科技有限公司 | A kind of quick protection formula electric wire reel based on centrifugal-block control |
| CN110697502A (en) * | 2019-10-15 | 2020-01-17 | 何雪峰 | Centrifugal winding mechanism for automobile cable |
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2020
- 2020-10-21 CN CN202011128024.7A patent/CN112093567A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101091199A (en) * | 2005-06-29 | 2007-12-19 | 哈莫尼克Ad股份有限公司 | Device with a brake, for opening and closing an opening/closing member |
| CN201660341U (en) * | 2010-01-28 | 2010-12-01 | 宁波大叶园林工业有限公司 | Slow retraction damping device for hose reel |
| CN108455381A (en) * | 2018-03-15 | 2018-08-28 | 深圳市齐创美科技有限公司 | A kind of quick protection formula electric wire reel based on centrifugal-block control |
| CN110697502A (en) * | 2019-10-15 | 2020-01-17 | 何雪峰 | Centrifugal winding mechanism for automobile cable |
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Application publication date: 20201218 |
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| WW01 | Invention patent application withdrawn after publication |