Unwinding device for pull ring belt with easy-to-open cover

Abstract

The utility model discloses an unwinding device for a pull ring belt easy to open. The unwinding device comprises a rack, an unwinding mechanism, a first guide wheel, a second guide wheel, a balance transverse swing rod, a first balance sensing mechanism, a traction belt conveying mechanism, a balance vertical swing rod, a second balance sensing mechanism and a controller. The unwinding mechanism is installed at the bottom of the rack and located below the balance transverse swing rod, the balance transverse swing rod corresponds to the first balance sensing mechanism, the first balance sensing mechanism detects the high position of the balance transverse swing rod when the balance transverse swing rod swings upwards, and the first balance sensing mechanism detects the low position of the balance transverse swing rod when the balance transverse swing rod swings downwards; the balance vertical swing rod corresponds to the second balance induction mechanism, when the balance vertical swing rod swings rightwards, the second balance induction mechanism detects the high position of the balance vertical swing rod, and when the balance vertical swing rod swings leftwards, the second balance induction mechanism detects the low position of the balance vertical swing rod. The tension degree of the pull ring belt in the unwinding process can be monitored and adjusted in real time, constant-speed unwinding is guaranteed, and the stability of belt conveying is guaranteed.

Description

Technical Field

[0001] The utility model relates to an unwinding device, in particular to an unwinding device for an easy-open cover pull ring tape. Background Art

[0002] At present, the pull ring on the easy-open end is made by unwinding a pull ring tape roll, and the pull ring tape is stepped into the pull ring die by a pull ring tape feeding device, and the pull ring is made by punching positioning holes, separation holes, finger holes, rivet holes, slits, pre-curling, 90° downward curling, final curling, nail hole forming and other processes. The made pull ring is connected to the pull ring strip and finally riveted with the easy-open end. However, the existing pull ring tape adopts a passive unwinding structure when unwinding. The tension of the pull ring tape cannot be fixed during the unwinding process, which easily causes the pull ring tape to loosen and the feeding tape to jam, resulting in poor feeding. In severe cases, it may cause the pull ring tape roll to fall off, causing production safety accidents. Utility Model Content

[0003] The problem to be solved by the utility model is to provide an unwinding device for an easy-open lid pull ring belt, which can monitor and adjust the tightness of the pull ring belt in real time during unwinding, ensure uniform unwinding speed, and ensure stable belt feeding.

[0004] In order to solve the above technical problems, the technical solutions adopted by the utility model are as follows:

[0005] A reeling device for an easy-open lid pull ring belt, characterized in that it comprises a frame, a reeling mechanism, a first guide wheel, a second guide wheel, a balancing sway bar, a first balancing induction mechanism, a traction and feeding mechanism, a balancing vertical sway bar, a second balancing induction mechanism and a controller, wherein the first guide wheel, the balancing sway bar, the second guide wheel, the traction and feeding mechanism and the balancing vertical sway bar are sequentially arranged on the frame from left to right; the reeling mechanism is installed at the bottom of the frame and is below the balancing sway bar, the balancing sway bar is horizontally arranged, the fixed end of the balancing sway bar is hingedly installed on the frame, a third guide wheel is arranged on the movable end of the balancing sway bar, the first guide wheel and the second guide wheel can be rotatably installed on the frame, and the first guide wheel is located above the left side of the third guide wheel, and the second guide wheel is located above the right side of the third guide wheel; the first balancing induction mechanism is installed on the frame, the balancing sway bar corresponds to the first balancing induction mechanism, and When the balancing transverse sway bar swings upward, the first balancing sensing mechanism detects the high position of the balancing transverse sway bar, and when the balancing transverse sway bar swings downward, the first balancing sensing mechanism detects the low position of the balancing transverse sway bar; the balancing vertical sway bar is vertically arranged, the upper end of the balancing vertical sway bar is hingedly mounted on the frame, the lower end of the balancing vertical sway bar is provided with a fourth guide wheel, the second balancing sensing mechanism is mounted on the frame, the balancing vertical sway bar corresponds to the second balancing sensing mechanism, and when the balancing vertical sway bar swings to the right, the second balancing sensing mechanism detects the high position of the balancing vertical sway bar, and when the balancing vertical sway bar swings to the left, the second balancing sensing mechanism detects the low position of the balancing vertical sway bar; the controller is mounted on the frame, the signal output end of the first balancing sensing mechanism and the signal output end of the second balancing sensing mechanism are both electrically connected to the control input end of the controller, and the power input end of the unwinding mechanism and the power input end of the traction and belt feeding mechanism are both electrically connected to the control output end of the controller.

[0006] Before working, install the pull ring tape roll on the unwinding mechanism, and pass the head end of the pull ring tape through the first guide wheel, the third guide wheel, the second guide wheel, the traction belt feeding mechanism, and the fourth guide wheel in sequence. During working, start the unwinding mechanism and the traction belt feeding mechanism to rotate and feed the belt. The tension generated by the pull ring tape during unwinding can make the balance sway bar swing up and down and the balance vertical sway bar swing left and right. The detection and adjustment methods are as follows:

[0007] Step (1) When the unwinding mechanism rotates and unwinds, the pull ring belt is continuously fed out. At this time, the pull ring belt at the balancing sway bar increases, making the pull ring belt at the balancing sway bar looser and looser, and the balancing sway bar swings downward (because the pull ring belt is loose and there is no tension to hold it). When the first balancing sensing mechanism detects that the balancing sway bar is at the lowest position, the controller controls the unwinding mechanism to stop rotating and unwinding the belt.

[0008] In step (2), when the pull ring belt is continuously sent away by the traction belt feeding mechanism, the pull ring belt at the balance sway bar becomes tighter and tighter, and the balance sway bar swings upward (because the pull ring belt is tight, the tension force pulls upward). When the first balance sensing mechanism detects that the balance sway bar is in the highest position, the controller controls the unwinding mechanism to start rotating and unwinding the belt; then return to step (1) and repeat the cycle;

[0009] Step (3) When the traction belt feeding mechanism rotates, the pull ring belt is continuously fed out. At this time, the pull ring belt of the balancing vertical swing arm increases, making the pull ring belt at the balancing vertical swing arm looser and looser, and the balancing vertical swing arm swings to the left (because the pull ring belt is loose and there is no tension to hold it). When the second balancing sensing mechanism detects that the balancing vertical swing arm is at the lowest position, the controller controls the traction belt feeding mechanism to stop rotating and feeding the belt.

[0010] Step (4) As the pull belt of the rear-stage pull ring forming machine is pulled, the pull ring belt of the balance vertical swing arm becomes tighter and tighter, and the balance vertical swing arm swings to the right (because the pull ring belt is tight, the tension is pulled upward). When the second balance sensing mechanism detects that the balance vertical swing arm is in the highest position, the controller controls the pulling belt feeding mechanism to start rotating the belt feeding; then return to step (3) and repeat the cycle.

[0011] In the preferred embodiment, the first balance sensing mechanism includes a first sensing support plate, a first low-position sensor and a first high-position sensor. The first sensing support plate is vertically mounted on the frame. The first low-position sensor and the first high-position sensor are both mounted on the first sensing support plate, and the first low-position sensor is located above the first high-position sensor. The balance sway bar swings up and down between the first low-position sensor and the first high-position sensor. During the up and down swinging of the balance sway bar, the third guide wheel on the movable end of the balance sway bar will swing up and down according to the tension state of the pull ring belt. When the balance sway bar swings upward, the first high-position sensor can detect that the balance sway bar is in a high position; when the balance sway bar swings downward, the first low-position sensor can detect that the balance sway bar is in a low position.

[0012] In a further preferred embodiment, the first sensing support plate is provided with a first strip-shaped through hole extending in the up-down direction, the first low-position sensor is installed in the lower part of the first strip-shaped through hole and can move up and down in the first strip-shaped through hole, and the first high-position sensor is installed in the upper part of the first strip-shaped through hole and can move up and down in the first strip-shaped through hole. Through this arrangement, the positions of the first low-position sensor and the first high-position sensor can be adjusted according to actual needs to adapt to the changes in the tension of different pull-ring belts during the conveying process.

[0013] In a further preferred embodiment, the first low-position sensor and the first high-position sensor are both provided with a first positioning bolt, the rod of the first positioning bolt is installed with a first nut, the rod of the first positioning bolt passes through the first strip-shaped through hole, and the head of the first positioning bolt and the first nut together clamp the first sensing support plate. Through the cooperation of the first positioning bolt and the first nut, the installation position of the first low-position sensor and the first high-position sensor on the first sensing support plate is adjusted to adapt to the different tensions of the pull ring belt during the conveying and traction process.

[0014] In a further preferred embodiment, the first strip-shaped through hole is an arc-shaped through hole, and the curvature of the arc-shaped through hole can make the installation positions of the first low-position sensor and the first high-position sensor more suitable for the curvature of the up-and-down swing of the balancing sway bar.

[0015] In the preferred embodiment, the second balance sensing mechanism includes a second sensing support plate, a second low-position sensor and a second high-position sensor. The second sensing support plate is vertically mounted on the frame. The second low-position sensor and the second high-position sensor are both mounted on the second sensing support plate, and the second low-position sensor is located to the upper right of the second high-position sensor. The balance vertical swing arm swings left and right between the second low-position sensor and the second high-position sensor. During the left and right swing of the balance vertical swing arm, the fourth guide wheel on the lower end of the balance vertical swing arm will swing left and right according to the tension state of the pull ring belt. When the balance vertical swing arm swings to the right, the second high-position sensor can detect that the balance vertical swing arm is in a high position; when the balance vertical swing arm swings to the left, the second low-position sensor can detect that the balance vertical swing arm is in a low position.

[0016] In a further preferred solution, a second strip-shaped through hole is provided on the second induction support plate, and the second strip-shaped through hole extends in a direction of being lower on the left and higher on the right. The second low-position sensor is installed in the left part of the second strip-shaped through hole and can move left and right in the second strip-shaped through hole, and the second high-position sensor is installed in the right part of the second strip-shaped through hole and can move left and right in the second strip-shaped through hole. Through this arrangement, the positions of the second low-position sensor and the second high-position sensor can be adjusted according to actual needs to adapt to the changes in the tension of different pull-loop belts during the conveying process.

[0017] In a further preferred embodiment, the second low-position sensor and the second high-position sensor are both provided with a second positioning bolt, the rod of the second positioning bolt is installed with a second nut, the rod of the second positioning bolt passes through the second strip-shaped through hole, and the head of the second positioning bolt and the second nut together clamp the second sensing support plate. Through the cooperation of the second positioning bolt and the second nut, the installation position of the second low-position sensor and the second high-position sensor on the second sensing support plate is adjusted to adapt to the different tensions of the pull ring belt during the conveying and traction process.

[0018] In a further preferred embodiment, the second strip-shaped through hole is an arc-shaped through hole, and the curvature of the arc-shaped through hole can make the installation positions of the second low-position sensor and the second high-position sensor more suitable for the curvature of the left-right swing of the balancing vertical swing rod.

[0019] In a preferred embodiment, the unwinding mechanism includes a turntable and an unwinding drive motor capable of driving the turntable to rotate, the unwinding drive motor is mounted on the frame, and the unwinding drive motor is electrically connected to the control output terminal of the controller; the turntable is rotatably mounted on the frame, and a positioning sleeve capable of fixing the pull ring tape roll is provided at the center of the turntable. When installing the pull ring tape roll, the pull ring tape roll is sleeved on the positioning sleeve, so that the central inner wall of the pull ring tape roll is in close contact with the outer wall of the positioning sleeve, so that the pull ring tape roll on the turntable is tensioned on the positioning sleeve and fixed, effectively preventing the displacement problem during the unwinding process of the pull ring tape.

[0020] In a further preferred embodiment, at least one auxiliary guide wheel is provided between the unwinding mechanism and the first guide wheel, and the auxiliary guide wheel is rotatably mounted on the frame. The guide of the auxiliary guide wheel enables the pull ring belt on the unwinding mechanism to be more smoothly transferred to the first guide wheel.

[0021] In the preferred embodiment, the traction and belt feeding mechanism includes a traction unit and a belt feeding unit which are arranged in sequence from left to right, the traction unit includes a traction pressure roller and a traction fixed roller which are arranged opposite to each other up and down, both the traction pressure roller and the traction fixed roller can be rotatably installed on the frame, and the roller surfaces of the traction pressure roller and the traction fixed roller are in contact and cooperation; the belt feeding unit includes a belt feeding pressure roller, a belt feeding active roller and a belt feeding driving motor which can drive the belt feeding active roller to rotate, the belt feeding driving motor is installed on the frame, and the belt feeding driving motor is electrically connected to the control output end of the controller; the belt feeding pressure roller and the belt feeding active roller are arranged opposite to each other up and down and can be rotatably installed on the frame, and the roller surfaces of the belt feeding pressure roller and the belt feeding active roller are in contact and cooperation.

[0022] In a further preferred embodiment, an auxiliary guide roller is provided between the traction belt feeding mechanism and the fourth guide wheel, and the auxiliary guide roller is rotatably mounted on the frame. Through the guidance of the auxiliary guide roller, the pull ring belt on the traction belt feeding mechanism can be more smoothly transmitted to the fourth guide wheel.

[0023] Compared with the prior art, the utility model has the following advantages:

[0024] The utility model uses a first balance sensing mechanism to detect whether a balance transverse swing bar is in a high position or a low position when it swings up and down, and a second balance sensing mechanism to detect whether a balance vertical swing bar is in a high position or a low position when it swings left and right, so as to judge whether the pull ring belt is too tight or too loose when unwinding, and controls the start and stop of the power input end of the unwinding mechanism and the power input end of the traction belt feeding mechanism through a controller, so as to monitor and adjust the tightness of the pull ring belt when unwinding in real time, so as to keep it in a stable state, avoid being too tight or loose, make the pull ring belt in a uniform speed unwinding state during the unwinding process, ensure the stability of the belt feeding, and effectively solve the problem of the pull ring belt being too tight or too loose caused by passive unwinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a specific embodiment of the utility model;

[0026] Figure 2 yes Figure 1 A front view of

[0027] Figure 3 yes Figure 1 Top view of the . DETAILED DESCRIPTION

[0028] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] like Figure 1-3As shown, the unwinding device of the easy-open lid pull ring tape in this embodiment includes a frame 1, an unwinding mechanism 2, a first guide wheel 3, a second guide wheel 4, a balancing sway bar 5, a first balancing induction mechanism 6, a traction and feeding mechanism 7, a balancing vertical sway bar 8, a second balancing induction mechanism 9 and a controller (not shown in the figure), wherein the first guide wheel 3, the balancing sway bar 5, the second guide wheel 4, the traction and feeding mechanism 7, and the balancing vertical sway bar 8 are sequentially arranged on the frame 1 from left to right; the unwinding mechanism 2 is installed at the bottom of the frame 1 and is below the balancing sway bar 5, the balancing sway bar 5 is arranged horizontally, the fixed end of the balancing sway bar 5 is hingedly installed on the frame 1, and a third guide wheel 51 is arranged on the movable end of the balancing sway bar 5, the first guide wheel 3 and the second guide wheel 4 can be rotatably installed on the frame 1, and the first guide wheel 3 is located above the left side of the third guide wheel 51, and the second guide wheel 4 is located above the right side of the third guide wheel 51; the first balancing induction mechanism 6 is installed on the frame 1, and the balancing sway bar 5 and the first balancing sway bar 5 are hingedly installed on the frame 1, and the third guide wheel 51 is provided on the movable end of the balancing sway bar 5. The first balancing sensing mechanism 6 corresponds to the first balancing sensing mechanism 6, and when the balancing lateral swing bar 5 swings upward, the first balancing sensing mechanism 6 detects the high position of the balancing lateral swing bar 5, and when the balancing lateral swing bar 5 swings downward, the first balancing sensing mechanism 6 detects the low position of the balancing lateral swing bar 5; the balancing vertical swing bar 8 is vertically arranged, the upper end of the balancing vertical swing bar 8 is hingedly mounted on the frame 1, and the lower end of the balancing vertical swing bar 8 is provided with a fourth guide wheel 81, the second balancing sensing mechanism 9 is installed on the frame 1, the balancing vertical swing bar 8 corresponds to the second balancing sensing mechanism 9, and when the balancing vertical swing bar 8 swings to the right, the second balancing sensing mechanism 9 detects the high position of the balancing vertical swing bar 8, and when the balancing vertical swing bar 8 swings to the left, the second balancing sensing mechanism 9 detects the low position of the balancing vertical swing bar 8; the controller is installed on the frame 1, the signal output end of the first balancing sensing mechanism 6 and the signal output end of the second balancing sensing mechanism 9 are both electrically connected to the control input end of the controller, and the power input end of the unwinding mechanism 2 and the power input end of the traction and feeding mechanism 7 are both electrically connected to the control output end of the controller.

[0030] Before working, first install the pull ring belt roll on the unwinding mechanism 2, and pass the head end of the pull ring belt 10 through the first guide wheel 3, the third guide wheel 51, the second guide wheel 4, the traction belt feeding mechanism 7, and the fourth guide wheel 81 in sequence. During working, start the unwinding mechanism 2 and the traction belt feeding mechanism 7 to rotate and feed the belt. The tension generated by the pull ring belt 10 during unwinding can make the balance sway bar 5 swing up and down and the balance vertical sway bar 8 swing left and right. The detection and adjustment methods are as follows:

[0031] Step (1) When the unwinding mechanism 2 rotates and unwinds, the pull ring belt 10 is continuously fed out. At this time, the pull ring belt 10 at the balancing sway bar 5 increases, making the pull ring belt 10 at the balancing sway bar 5 looser and looser, and the balancing sway bar 5 swings downward (because the pull ring belt 10 is loose and there is no tension to hold it). When the first balancing sensing mechanism 6 detects that the balancing sway bar 5 is at the lowest position, the controller controls the unwinding mechanism 2 to stop rotating and unwinding.

[0032] Step (2): When the pull ring belt 10 is continuously sent away by the traction belt feeding mechanism 7, the pull ring belt 10 at the balance sway bar 5 becomes tighter and tighter. At this time, the balance sway bar 5 swings upward (because the pull ring belt 10 is tight and the tension is pulled upward). When the first balance sensing mechanism 6 detects that the balance sway bar 5 is in the highest position, the controller controls the unwinding mechanism 2 to start rotating and unwinding. Then, the process returns to step (1) and the cycle is repeated.

[0033] Step (3) When the traction belt feeding mechanism 7 rotates, the pull ring belt 10 is continuously fed out. At this time, the pull ring belt 10 of the balancing vertical swing arm 8 increases, so that the pull ring belt 10 at the balancing vertical swing arm 8 becomes looser and looser, and the balancing vertical swing arm 8 swings to the left (because the pull ring belt 10 is loose and there is no tension to hold it). When the second balancing sensing mechanism 9 detects that the balancing vertical swing arm 8 is at the lowest position, the traction belt feeding mechanism 7 is controlled by the controller to stop rotating and feeding the belt.

[0034] Step (4) As the pull belt of the rear-stage pull ring forming machine is pulled, the pull ring belt 10 of the balance vertical swing arm 8 becomes tighter and tighter, and the balance vertical swing arm 8 swings to the right (because the pull ring belt 10 is tight and the tension is pulled upward). When the second balance sensing mechanism 9 detects that the balance vertical swing arm 8 is in the highest position, the controller controls the pulling and feeding mechanism 7 to start rotating and feeding the belt; then return to step (3) and repeat the cycle.

[0035] The first balancing induction mechanism 6 includes a first induction support plate 61, a first low-position sensor 62 and a first high-position sensor 63. The first induction support plate 61 is vertically mounted on the frame 1. The first low-position sensor 62 and the first high-position sensor 63 are both mounted on the first induction support plate 61, and the first low-position sensor 62 is located above the first high-position sensor 63. The balancing sway bar 5 swings up and down between the first low-position sensor 62 and the first high-position sensor 63. During the up and down swinging of the balancing sway bar 5, the third guide wheel 51 on the movable end of the balancing sway bar 5 swings up and down according to the tension state of the pull ring belt 10. When the balancing sway bar 5 swings upward, the first high-position sensor 63 can detect that the balancing sway bar 5 is in a high position; when the balancing sway bar 5 swings downward, the first low-position sensor 62 can detect that the balancing sway bar 5 is in a low position.

[0036] The first sensing support plate 61 is provided with a first strip-shaped through hole 611 extending in the up-down direction, the first low-position sensor 62 is installed in the lower part of the first strip-shaped through hole 611 and can move up and down in the first strip-shaped through hole 611, and the first high-position sensor 63 is installed in the upper part of the first strip-shaped through hole 611 and can move up and down in the first strip-shaped through hole 611. Through this arrangement, the positions of the first low-position sensor 62 and the first high-position sensor 63 can be adjusted according to actual needs to adapt to the change in tension of different pull-loop belts 10 during the conveying process.

[0037] The first low-position sensor 62 and the first high-position sensor 63 are both provided with a first positioning bolt 621, and the rod of the first positioning bolt 621 is installed with a first nut (not shown in the figure). The rod of the first positioning bolt 621 passes through the first strip-shaped through hole 611, and the head of the first positioning bolt 621 and the first nut together clamp the first sensing support plate 61. Through the cooperation of the first positioning bolt 621 and the first nut, the installation position of the first low-position sensor 62 and the first high-position sensor 63 on the first sensing support plate 61 is adjusted to adapt to different tensions of the pull ring belt 10 during the conveying and traction process.

[0038] The first strip-shaped through hole 611 is an arc-shaped through hole, and the curvature of the arc-shaped through hole can make the installation positions of the first low-position sensor 62 and the first high-position sensor 63 more suitable for the curvature of the up-and-down swing of the balancing yaw bar 5 .

[0039] The second balance sensing mechanism 9 includes a second sensing support plate 91, a second low-position sensor 92 and a second high-position sensor 93. The second sensing support plate 91 is vertically mounted on the frame 1. The second low-position sensor 92 and the second high-position sensor 93 are both mounted on the second sensing support plate 91, and the second low-position sensor 92 is located above the right side of the second high-position sensor 93. The balance vertical swing arm 8 swings left and right between the second low-position sensor 92 and the second high-position sensor 93. During the swinging of the balance vertical swing arm 8, the fourth guide wheel 81 at the lower end of the balance vertical swing arm 8 swings left and right according to the tension state of the pull ring belt 10. When the balance vertical swing arm 8 swings to the right, the second high-position sensor 93 can detect that the balance vertical swing arm 8 is in a high position; when the balance vertical swing arm 8 swings to the left, the second low-position sensor 92 can detect that the balance vertical swing arm 8 is in a low position.

[0040] The second sensing support plate 91 is provided with a second strip through hole 911, which extends in a direction of being lower on the left and higher on the right. The second low-position sensor 92 is installed in the left part of the second strip through hole 911 and can move left and right in the second strip through hole 911. The second high-position sensor 93 is installed in the right part of the second strip through hole 911 and can move left and right in the second strip through hole 911. Through this arrangement, the positions of the second low-position sensor 92 and the second high-position sensor 93 can be adjusted according to actual needs to adapt to the changes in the tension of different pull-loop belts 10 during the conveying process.

[0041] The second low-position sensor 92 and the second high-position sensor 93 are both provided with a second positioning bolt 921, and the rod of the second positioning bolt 921 is installed with a second nut (not shown in the figure). The rod of the second positioning bolt 921 passes through the second strip-shaped through hole 911, and the head of the second positioning bolt 921 and the second nut together clamp the second sensing support plate 91. Through the cooperation of the second positioning bolt 921 and the second nut, the installation position of the second low-position sensor 92 and the second high-position sensor 93 on the second sensing support plate 91 is adjusted to adapt to the different tensions of the pull ring belt 10 during the conveying and traction process.

[0042] The second strip-shaped through hole 911 is an arc-shaped through hole, and the curvature of the arc-shaped through hole can make the installation positions of the second low-position sensor 92 and the second high-position sensor 93 more suitable for the curvature of the left-right swing of the balancing vertical swing rod 8.

[0043] The unwinding mechanism 2 includes a turntable 21 and an unwinding drive motor 22 capable of driving the turntable 21 to rotate. The unwinding drive motor 22 is mounted on the frame 1 and is electrically connected to the control output terminal of the controller. The turntable 21 is rotatably mounted on the frame 1, and a positioning sleeve 23 capable of fixing the pull ring tape roll is provided at the center of the turntable 21. When installing the pull ring tape roll, the pull ring tape roll is sleeved on the positioning sleeve 23, so that the central inner wall of the pull ring tape roll is in close contact with the outer wall of the positioning sleeve 23, so that the pull ring tape roll on the turntable 21 is tensioned on the positioning sleeve 23 and fixed, effectively preventing the displacement problem of the pull ring tape 10 during the unwinding process.

[0044] At least one auxiliary guide wheel 11 is provided between the unwinding mechanism 2 and the first guide wheel 3, and the auxiliary guide wheel 11 is rotatably mounted on the frame 1. Through the guidance of the auxiliary guide wheel 11, the pull ring belt on the unwinding mechanism 2 can be transmitted to the first guide wheel 3 more smoothly.

[0045] The traction and tape feeding mechanism 7 includes a traction unit 71 and a tape feeding unit 72 which are arranged in sequence from left to right. The traction unit 71 includes a traction pressure roller 711 and a traction fixed roller 712 which are arranged opposite to each other up and down. Both the traction pressure roller 711 and the traction fixed roller 712 can be rotatably installed on the frame 1, and the roller surfaces of the traction pressure roller 711 and the traction fixed roller 712 are in contact and cooperation; the tape feeding unit 72 includes a tape feeding pressure roller 721, a tape feeding active roller 722 and a tape feeding driving motor 723 which can drive the tape feeding active roller 722 to rotate. The tape feeding driving motor 723 is installed on the frame 1, and the tape feeding driving motor 723 is electrically connected to the control output end of the controller; the tape feeding pressure roller 721 and the tape feeding active roller 722 are arranged opposite to each other up and down and can be rotatably installed on the frame 1, and the roller surfaces of the tape feeding pressure roller 721 and the tape feeding active roller 722 are in contact and cooperation.

[0046] An auxiliary guide roller 12 is provided between the traction belt feeding mechanism 7 and the fourth guide wheel 81, and the auxiliary guide roller 12 is rotatably mounted on the frame 1. Through the guidance of the auxiliary guide roller 12, the pull ring belt on the traction belt feeding mechanism 7 can be transmitted to the fourth guide wheel 81 more smoothly.

[0047] In addition, it should be noted that the names of the various parts of the specific embodiments described in this specification may be different, and any equivalent or simple changes made based on the structure, features and principles described in the utility model patent concept are included in the protection scope of the utility model patent. The technical personnel of the technical field to which the utility model belongs can make various modifications or supplements to the specific embodiments described or replace them in a similar manner, as long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, they should all fall within the protection scope of the utility model.

Claims

1. An unwinding device for an easy-open lid pull ring, characterized in that: The invention comprises a frame, an unwinding mechanism, a first guide wheel, a second guide wheel, a balancing sway bar, a first balancing sensing mechanism, a traction belt feeding mechanism, a balancing vertical sway bar, a second balancing sensing mechanism and a controller, wherein the first guide wheel, the balancing sway bar, the second guide wheel, the traction belt feeding mechanism and the balancing vertical sway bar are sequentially arranged on the frame from left to right; the unwinding mechanism is installed at the bottom of the frame and is below the balancing sway bar, the balancing sway bar is horizontally arranged, the fixed end of the balancing sway bar is hingedly installed on the frame, a third guide wheel is arranged on the movable end of the balancing sway bar, the first guide wheel and the second guide wheel can be rotatably installed on the frame, and the first guide wheel is located above the left side of the third guide wheel, and the second guide wheel is located above the right side of the third guide wheel; the first balancing sensing mechanism is installed on the frame, the balancing sway bar corresponds to the first balancing sensing mechanism, and the balancing sway bar swings upward The first balancing sensing mechanism detects the high position of the balancing transverse sway bar, and when the balancing transverse sway bar swings downward, the first balancing sensing mechanism detects the low position of the balancing transverse sway bar; the balancing vertical sway bar is vertically arranged, the upper end of the balancing vertical sway bar is hingedly mounted on the frame, and a fourth guide wheel is arranged on the lower end of the balancing vertical sway bar, the second balancing sensing mechanism is mounted on the frame, the balancing vertical sway bar corresponds to the second balancing sensing mechanism, and when the balancing vertical sway bar swings to the right, the second balancing sensing mechanism detects the high position of the balancing vertical sway bar, and when the balancing vertical sway bar swings to the left, the second balancing sensing mechanism detects the low position of the balancing vertical sway bar; the controller is mounted on the frame, the signal output end of the first balancing sensing mechanism and the signal output end of the second balancing sensing mechanism are both electrically connected to the control input end of the controller, and the power input end of the unwinding mechanism and the power input end of the traction and belt feeding mechanism are both electrically connected to the control output end of the controller.

2. The unwinding device for the easy-open lid pull ring according to claim 1, characterized in that: The first balancing sensing mechanism includes a first sensing support plate, a first low-position sensor and a first high-position sensor. The first sensing support plate is vertically mounted on the frame. The first low-position sensor and the first high-position sensor are both mounted on the first sensing support plate, and the first low-position sensor is above the first high-position sensor. The balancing sway bar swings up and down between the first low-position sensor and the first high-position sensor.

3. The unwinding device for the easy-open lid pull ring according to claim 2, characterized in that: The first sensing support plate is provided with a first strip-shaped through hole extending in the up-down direction, the first low-position sensor is installed in the lower part of the first strip-shaped through hole and can move up and down in the first strip-shaped through hole, and the first high-position sensor is installed in the upper part of the first strip-shaped through hole and can move up and down in the first strip-shaped through hole.

4. The unwinding device for the easy-open lid pull ring according to claim 3, characterized in that: The first low-position sensor and the first high-position sensor are both provided with a first positioning bolt, the rod of the first positioning bolt is installed with a first nut, the rod of the first positioning bolt passes through the first strip-shaped through hole, and the head of the first positioning bolt and the first nut jointly clamp the first sensing support plate.

5. The unwinding device for the easy-open lid pull ring according to claim 3 or 4, characterized in that: The first strip-shaped through hole is an arc-shaped through hole.

6. The unwinding device for the easy-open lid pull ring according to claim 1, characterized in that: The second balance sensing mechanism includes a second sensing support plate, a second low-position sensor and a second high-position sensor. The second sensing support plate is vertically installed on the frame. The second low-position sensor and the second high-position sensor are both installed on the second sensing support plate, and the second low-position sensor is located to the upper right of the second high-position sensor. The balance vertical swing arm swings left and right between the second low-position sensor and the second high-position sensor.

7. The unwinding device for the easy-open end pull ring according to claim 6, characterized in that: A second strip through hole is provided on the second sensing support plate, and the second strip through hole extends in a direction of being lower on the left and higher on the right. The second low-position sensor is installed in the left part of the second strip through hole and can move left and right in the second strip through hole, and the second high-position sensor is installed in the right part of the second strip through hole and can move left and right in the second strip through hole.

8. The unwinding device for the easy-open end pull ring according to claim 7, characterized in that: The second low-position sensor and the second high-position sensor are both provided with a second positioning bolt, the rod of the second positioning bolt is installed with a second nut, the rod of the second positioning bolt passes through the second strip-shaped through hole, and the head of the second positioning bolt and the second nut jointly clamp the second sensing support plate.

9. The unwinding device for the easy-open end pull ring tape according to claim 7 or 8, characterized in that: The second strip-shaped through hole is an arc-shaped through hole.

10. The unwinding device for the easy-open end pull ring tape according to claim 1, characterized in that: The unwinding mechanism includes a turntable and an unwinding drive motor capable of driving the turntable to rotate, the unwinding drive motor is mounted on the frame, and the unwinding drive motor is electrically connected to the control output end of the controller; the turntable is rotatably mounted on the frame, and a positioning sleeve capable of fixing the pull ring tape roll is provided at the center of the turntable; At least one auxiliary guide wheel is provided between the unwinding mechanism and the first guide wheel, and the auxiliary guide wheel is rotatably mounted on the frame; The traction and belt feeding mechanism comprises a traction unit and a belt feeding unit which are arranged in sequence from left to right, the traction unit comprises a traction pressure roller and a traction fixed roller which are arranged opposite to each other up and down, the traction pressure roller and the traction fixed roller can be rotatably mounted on the frame, and the roller surface of the traction pressure roller and the traction fixed roller are in contact and cooperation; the belt feeding unit comprises a belt feeding pressure roller, a belt feeding active roller and a belt feeding driving motor which can drive the belt feeding active roller to rotate, the belt feeding driving motor is mounted on the frame, and the belt feeding driving motor is electrically connected to the control output end of the controller; the belt feeding pressure roller and the belt feeding active roller are arranged opposite to each other up and down and can be rotatably mounted on the frame, and the roller surface of the belt feeding pressure roller and the belt feeding active roller are in contact and cooperation; An auxiliary guide roller is arranged between the traction belt feeding mechanism and the fourth guide wheel, and the auxiliary guide roller is rotatably mounted on the frame.

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