Strapping machine and strapping method of strapping machine

Abstract

A strapping machine and a strapping method of the strapping machine. The strapping machine comprises a frame body (1), a strap storage mechanism (10), a loop forming mechanism (20), a tightening mechanism (30), a fusion welding mechanism (40) and a strap cutting mechanism (50). The tightening mechanism (30) comprises a moving assembly (103), a detection roller (104), a detection support (105), a damping component (107) and a trigger device (106). The moving assembly (103) first retreats a strap, and then the tightened strap drives the detection support (105), such that a strap reel (1011) of the strap storage mechanism (10) switches from a locked state to a rotatable state. When the detection support (105) moves, the trigger device (106) indirectly or directly controls the strap reel (1011) to release the strap.

Description

Bundling machine and bundling method of bundling machine TECHNICAL FIELD

[0001] The present application belongs to the technical field of packaging tape bundling machines, and particularly relates to a bundling machine and a bundling method of the bundling machine. BACKGROUND

[0002] CN202011120420.5 discloses a bundling machine, which comprises a tape storage mechanism for storing tape and supplying the tape to a loop knot mechanism when needed; the loop knot mechanism is used for advancing the tape along a loop-shaped track and forming a loop knot with the head and tail connected; a tightening mechanism is used for reversely tightening the tape and tightly binding the loop knot formed by the tape on a product to be bound; a fusion welding mechanism is used for fusing the head and tail of the loop knot into one; and a tape cutting mechanism is used for cutting the tape still connected outside the loop knot.

[0003] In the prior art, a tape return motor and a tape return roller are provided, and the tape is returned by the friction force of the tape return roller clamping the tape. In the actual operation process, the torque of the tape return motor needs to be detected and it is determined whether the tape is tight. The existing problems are as follows: after the packed product changes, the corresponding tape return condition also changes, and the tightening mechanism of the tape needs to be adjusted to avoid the tape being too tight or too loose; and when the material of the tape changes, the tightening mechanism also needs to be adjusted to avoid the phenomenon of slipping or damaging the tape, so that the difficulty of matching the tightening mechanism and the bundling is high. If the tightening mechanism clamps the bundling too tightly, marks will be left on the bundling, and if the tightening mechanism does not clamp the bundling, the phenomenon of slipping will occur. Especially for some thin bundling, these problems are more likely to occur. In addition, the tape will be affected by the friction force when returning in the loop knot mechanism, and the friction force will affect the tightening of the tape.

[0004] SUMMARY

[0005] The purpose of the present application is to provide a bundling machine and a bundling method of the bundling machine which can pack different products and are not easy to damage the tape.

[0006] The purpose of the present application is achieved as follows:

[0007] A bundling machine comprises

[0008] a frame body,

[0009] a tape storage mechanism for storing tape and supplying the tape to a loop knot mechanism when needed;

[0010] a loop knot mechanism for advancing the tape along a loop-shaped track and forming a loop knot with the head and tail connected;

[0011] a tightening mechanism for reversely tightening the tape and tightly binding the loop knot formed by the tape on a product to be bound;

[0012] a melting mechanism for melting the head and tail of the ring knot together;

[0013] a cutting mechanism for cutting the band connected on the ring knot;

[0014] the band storage mechanism comprises:

[0015] a band reel assembly for mounting a band reel; the band reel assembly is provided with a locking device; the locking device controls the band reel to be in a locked state or a rotatable state; when the band reel is in the locked state, the band reel cannot rotate; when the band reel is in the rotatable state, the band reel supplies the band;

[0016] a plurality of fixed rollers are installed on one side of the band storage mechanism; the fixed rollers are used for winding the band;

[0017] a plurality of movable rollers are installed on the other side of the band storage mechanism; the movable rollers are used for winding the band; the fixed rollers and the movable rollers cooperate to form a band storage area;

[0018] the tightening mechanism comprises:

[0019] a moving assembly is movably mounted on the frame; the moving assembly is provided with the movable rollers; the moving assembly can move between a first position and a second position; when the moving assembly moves to the first position, the movable rollers move away from the fixed rollers and store the band; when the moving assembly moves to the second position, the movable rollers move close to the fixed rollers and supply the band;

[0020] a detection roller is used for winding the band; the detection roller is mounted on a detection bracket;

[0021] the detection bracket is rotatably or movably mounted on the frame; the detection bracket is provided with a damping component; the damping component provides a certain resistance to the detection bracket;

[0022] a triggering device is used for obtaining the action of the detection bracket; when the detection bracket moves, the triggering device indirectly or directly controls the locking device, so that the band reel can rotate.

[0023] Preferably, the damping component is an electromagnetic damper with adjustable resistance; a gear is mounted on the output shaft of the electromagnetic damper;

[0024] the detection bracket is a swing arm; the middle part of the swing arm is rotatably mounted on the frame; the lower end of the swing arm is provided with the detection roller; the upper end of the swing arm is provided with a tooth surface part; the tooth surface part is engaged with the gear;

[0025] The swing arm is provided with a sensing part on one side; the trigger device is a sensor provided on the frame body, which detects the action of the sensing part.

[0026] Preferably, the plurality of fixed rollers and the plurality of movable rollers are vertically arranged; the fixed rollers and the movable rollers are staggered in the horizontal direction; the detection roller is arranged in the same column as the fixed roller; or, the plurality of fixed rollers and the plurality of movable rollers are horizontally arranged; the fixed rollers and the movable rollers are staggered in the vertical direction; the detection roller is arranged in the same row as the fixed roller.

[0027] Preferably, the frame body is provided with a sliding rail, a synchronous belt assembly and a driving motor; the conveying direction of the synchronous belt assembly is parallel to the sliding rail.

[0028] The sliding rail is provided with the moving assembly, and the sliding rail guides the moving assembly to move between the first position and the second position.

[0029] One side of the moving assembly is fixedly connected with the synchronous belt assembly; the driving motor drives the moving assembly through the synchronous belt assembly.

[0030] Preferably, the moving assembly comprises a first moving bracket and a second moving bracket; the first moving bracket and the second moving bracket are both installed on the sliding rail; the first moving bracket and the second moving bracket are of a split structure.

[0031] The first moving bracket is provided with the movable roller on the front side, and the first moving bracket is provided with the rope on the rear side, the other end of the rope passes through the steering roller and is hung with a counterweight.

[0032] The second moving bracket is fixedly connected with the synchronous belt assembly.

[0033] The first moving bracket is located on one side of the storage direction of the second moving bracket.

[0034] Preferably, the first moving bracket is provided with a photoelectric sensing sheet, and the frame body is provided with a photoelectric sensor; when the first moving bracket is located at the first position, the photoelectric sensing sheet triggers the photoelectric sensor.

[0035] Preferably, a damping pad is arranged between the first moving bracket and the second moving bracket, and the damping pad is fixed on the first moving bracket or the second moving bracket.

[0036] The locking device on the reel assembly is an electromagnetic brake.

[0037] A bundling method of a bundling machine, the method is based on the bundling machine, and the specific steps comprise:

[0038] Step (1), the initial state, the storage tape mechanism normal storage tape, the reel is in the locked state;

[0039] Step (2), the execution of the tape sending action; the tape sending roller group clamps the tape and sends it forward, the tape transmits force to the moving roller in the tight state, and the moving roller and the moving assembly move from the first position to the second position; after the moving roller moves a certain distance, the tape sending ends;

[0040] Step (3), the front end of the tape is compressed;

[0041] Step (4), the execution of the tape returning action: the tape sending roller group releases the tape, and the moving assembly moves to the first position; during the movement, the moving roller returns the tape to the inside of the storage tape mechanism, and the tape gradually tightens; when the tightening force of the tape gradually increases to a set value, the detection roller is driven by the tape, and the detection roller drives the detection bracket; the trigger device on the bracket detects the action of the detection bracket; the trigger device indirectly or directly controls the locking device, so that the reel is in a rotatable state;

[0042] Step (5), the execution of the tape storage action: the tape sending roller group clamps the tape, and the moving assembly continues to move to the first position; the reel rotates and supplies the tape to the inside of the storage tape mechanism until the storage is completed;

[0043] Step (6), the cutting tape mechanism completes the cutting of the tape, and the welding mechanism completes the ironing of the tape; the packaging is completed.

[0044] Preferably, the moving assembly comprises a first moving bracket and a second moving bracket; the first moving bracket and the second moving bracket are both installed on the slide rail; the first moving bracket is provided with the moving roller on the front side, and the rope and the counterweight are installed on the rear side of the first moving bracket;

[0045] The second moving bracket is fixedly connected with the synchronous belt assembly, and the driving motor drives the synchronous belt assembly and the second moving bracket;

[0046] In step (1), the initial state, the first moving bracket and the second moving bracket are in a separated state, the first moving bracket is located at the first position under the action of the counterweight, and the second moving bracket is located at the second position;

[0047] In step (2), the moving roller and the first moving bracket overcome the gravity of the counterweight, and both the moving roller and the first moving bracket move a certain distance to the second position, and the tape sending ends;

[0048] In step (4), the first moving bracket moves to the first position under the action of the counterweight; the second moving bracket moves to the first position under the action of the synchronous belt assembly and the driving motor; when the first moving bracket moves to a certain extent, the tape is in a tight state, and the tape sent by the tape sending step has been completely returned to the storage tape mechanism;

[0049] In the step (5), the second moving support continues to move to the first position and pushes the first moving support to move to the first position; the reel rotates to store the belt until the first moving support reaches the first position; when the first moving support reaches the first position, the first moving support triggers an optical signal;

[0050] The driving motor drives the synchronous belt assembly to rotate reversely according to the optical signal, the second moving support moves to the second position and pushes the detection support to reset; and the electromagnetic brake relocks the reel;

[0051] When the swing arm is reset, the sensor on the upper part of the frame triggers, and the belt is completely stored.

[0052] Preferably, in the step (5), after the belt feeding roller group clamps the belt, the step (6) is performed first and then the step (5) is continued to be performed, or the step (5) and the step (6) are performed simultaneously.

[0053] Compared with the prior art, the present application has the following prominent and beneficial technical effects:

[0054] 1. The frame of the present application is provided with a detection support, the detection support is provided with a damping component; the damping component provides a certain resistance to the detection support; the lower end of the detection support is provided with a detection roller; the present application uses a moving assembly to store the belt, and when the detection support moves, the device is indirectly or directly controlled to store the belt; the design makes the tightening degree of the belt during the packaging process controlled by the damping component, and the overall belt storage structure is simplified; the tightening force of the belt can be conveniently adjusted according to needs, improving the versatility and use convenience of the belt tightening machine; the torque of the detection belt storage motor is not needed, and the friction force of the belt during the tightening process in the ring knot mechanism is also not needed to be considered; the stability and accuracy of the detection are improved, and the cost is further reduced.

[0055] 2. The moving assembly of the present application adopts a split structure, the moving assembly includes a first moving support and a second moving support; the two-part structure can be separated, so that the belt feeding roller group and the synchronous belt assembly do not interfere with each other, ensuring the stability of the belt and preventing the belt from being easily scratched; the second moving support further ensures the accurate reset of the detection support. BRIEF DESCRIPTION OF DRAWINGS

[0056] Fig. 1 is a schematic diagram of the overall structure of the belt tightening machine.

[0057] Fig. 2 is a schematic diagram of the belt storage mechanism and the tightening mechanism.

[0058] Fig. 3 is a schematic diagram of the belt storage mechanism and the tightening mechanism.

[0059] Fig. 4 is an exploded view of the components of the belt storage mechanism and the tightening mechanism.

[0060] Figure 5 is a schematic view of the moving assembly of the tightening mechanism.

[0061] Figure 6 is a schematic view of the moving assembly of the tightening mechanism.

[0062] Figure 7 is a schematic view of the cooperation of the detection bracket, the detection roller and the triggering device.

[0063] Figure 8 is a schematic view of the cooperation of the detection bracket, the detection roller and the triggering device.

[0064] Figure 9 is a schematic view of the whole harness machine when the moving assembly is in the second position.

[0065] Figure 10 is a schematic view of the harness storage mechanism when the moving assembly is in the second position.

[0066] Figure 11 is a schematic view of the harness storage mechanism when the moving assembly is in the second position.

[0067] Figure 12 is a schematic view of the harness storage mechanism when the moving assembly is in the second position.

[0068] Reference signs: 1, frame body; 10, harness storage mechanism; 20, knotting mechanism; 30, tightening mechanism; 40, welding mechanism; 50, cutting mechanism; 101, reel assembly; 102, fixed roller; 103, moving assembly; 104, detection roller; 105, detection bracket; 106, triggering device; 107, damping component; 1011, reel; 1012, locking device; 1031, moving roller; 1033, first moving bracket; 1034, second moving bracket; 1035, rope; 1036, counterweight; 1037, steering roller; 1038, photoelectric sensing sheet; 1039, connecting part; 1040, shock-absorbing pad; 1051, sensing part; 1052, rotation point; 1053, abutting part; 1054, tooth surface part; 1055, gear part; 1071, gear; 201, feeding roller set. DETAILED DESCRIPTION

[0069] The present application will be further described in conjunction with specific embodiments and with reference to the accompanying drawings, wherein Figs. 1-12 are provided:

[0070] As shown in Figs. 1-4, a harness machine comprises

[0071] a frame body 1 for providing a carrier for the remaining mechanisms and components; the frame body serves as the main structure of the harness machine;

[0072] a harness storage mechanism 10 for storing the harness and supplying the harness to the knotting mechanism when needed;

[0073] Looping mechanism 20 for advancing the strap along a looped track and forming a looped end-to-end; the looping mechanism 20 is consistent with the prior art, and the present application will not be expanded; in the present application, the left side of the frame is provided with a looping mechanism, and the right side of the frame is provided with a strap storage mechanism 10, and the overall height is reduced;

[0074] Tightening mechanism 30 for reversing the strap and tightening the loop formed by the strap on the product to be bound;

[0075] Welding mechanism 40 for welding the head and tail ends of the loop together; the welding mechanism 40 is consistent with the prior art, and the present application will not be expanded;

[0076] Strap cutting mechanism 50 for cutting the connected strap on the loop; the strap cutting mechanism 50 is consistent with the prior art, and the present application will not be expanded;

[0077] The strap storage mechanism 10 comprises:

[0078] The strap disc assembly 101 is used to install the strap disc 1011; the strap disc assembly 101 is provided with a locking device 1012; the locking device 1012 is used to control the strap disc 1011 to be in a locked state or a rotatable state; when the strap disc is in the locked state, the strap disc cannot rotate; when the strap disc is in the rotatable state, the strap disc supplies the strap; in the present embodiment, the locking device 1012 can rotate when powered on, and lock the strap disc when powered off;

[0079] A plurality of fixed rollers 102 are installed on one side of the strap storage mechanism; the fixed rollers are used for the strap to bend around;

[0080] A plurality of moving rollers 1031 are installed on the other side of the strap storage mechanism; the moving rollers are used for the strap to bend around; the fixed rollers and the moving rollers cooperate to form a strap storage area 3;

[0081] The tightening mechanism 30 comprises:

[0082] The moving assembly 103 is movably installed on the frame; the moving assembly is provided with the moving rollers 1031; the moving assembly 103 can move between a first position and a second position; when the moving assembly 103 moves to the first position, the moving rollers 1031 move away from the fixed rollers 102 and store the strap; when the moving assembly 103 moves to the second position, the moving rollers 1031 approach the fixed rollers 102 and feed the strap;

[0083] The detection roller 104 is used for the strap to bend around; the detection roller is installed on a detection bracket;

[0084] The detection bracket 105 is rotatably or movably installed on the frame; the detection bracket is provided with a damping component 107, which gives the detection bracket a certain resistance;

[0085] Trigger device 106 is used to obtain the action of the detection bracket; when the detection bracket moves, the trigger device indirectly or directly controls the locking device 1012, which makes the reel rotatable.

[0086] It is pointed out that the moving assembly 103 and the moving roller 1031 are synchronously operated. Therefore, in the early stage of the moving assembly 103 resetting to the first position, the belt storage process of the belt machine is to obtain the belt from the loop knot mechanism, which is equivalent to the belt withdrawal process; after the belt withdrawal is completed, the moving assembly 103 continues to reset to the first position, and the belt is in a taut state during the process; when the belt drives the detection roller 104, the locking device 1012 makes the reel rotatable, and the belt storage process of the belt machine obtains the belt from the reel. In order to facilitate the description of the technical scheme, the moving assembly 103, the detection roller 104, the detection bracket 105 and the trigger device 106 are included in the tightening mechanism 30; those skilled in the art should know that the application does not exclude the whole or part of the tightening mechanism 30 into the belt storage mechanism 10; therefore, the technical scheme is expressed as: the belt storage mechanism 10 comprises the tightening mechanism 30, which also belongs to the concept and protection range of the application.

[0087] Preferably, the damping component 107 is an electromagnetic damper with adjustable resistance, and a gear 1071 is installed on the output shaft of the electromagnetic damper; after the packed articles or the belt change, the tightness of the belt needs to be adjusted during the belt withdrawal process to achieve better packing effect; in the application, only the working current or working voltage of the electromagnetic damper needs to be set in the program, and the adjustment of the resistance and the change of the tightness of the belt during the belt withdrawal process can be realized. Correspondingly, if the damping component 107 is a spring, its ability to adjust resistance is relatively poor.

[0088] As shown in FIG. 7 and FIG. 8, the detection bracket 105 is a swing arm, the middle part of the swing arm is rotatably installed on the frame, the lower end of the swing arm is provided with the detection roller 104, and the upper end of the swing arm is provided with a tooth surface part 1054; the tooth surface part 1054 is engaged with the gear 1071; the rotation point 1052 of the middle part of the swing arm is located at the upper part of the swing arm, and the swing arm forms a simple lever structure, which can properly amplify the force of the lower part of the swing arm and transmit the force to the tooth surface part of the upper part, so that the detection is more sensitive; the arc-shaped tooth surface part 1054 and the gear 1071 are matched to realize the stability of the damping part 107, and the change of the resistance is not large or small; one side of the swing arm is provided with a sensing part 1051; the trigger device 106 is a sensor provided on the frame, and the sensor detects the action of the sensing part 1051. Part of the structure of the sensing part 1051 extends into the two sensors, and when the sensing part 1051 exits between the two sensors, the photoelectric signal between the two sensors is turned on; the controller of the belt binding machine receives the corresponding photoelectric signal and controls the locking device 1012, and the locking device 1012 makes the belt disc rotatable; a abutting part 1053 is arranged on the swing arm, and a gear part 1055 is arranged on the frame; when the swing arm moves to a certain degree, the abutting part 1053 is pressed against the gear part 1055, so that the swing arm cannot continue to swing, and the effect of safety limiting is realized.

[0089] Preferably, the plurality of fixed rollers 102 and the plurality of movable rollers 1031 are vertically arranged; the fixed rollers 102 and the movable rollers 1031 are staggered in the horizontal direction; and the detection roller 104 is arranged in the same column as the fixed rollers 102. In the scheme of the present application, the fixed rollers and the movable rollers are arranged left and right. The detection roller is arranged in the middle of the column of fixed rollers. As shown in FIG. 1, after the belt comes out of the belt disc, it is wound from right to left in turn, first winding a roller located on the right side, then winding a roller located on the left side, and then passing through the belt feeding roller set 201 from top to bottom. As a variation, the plurality of fixed rollers 102 and the plurality of movable rollers 1031 can also be arranged horizontally; the fixed rollers 102 and the movable rollers 1031 are staggered in the vertical direction; the movable rollers 1031 are located below the fixed rollers 102; and the detection roller 104 is arranged in the same row as the fixed rollers 102; in this case, the gravity of the moving assembly 103 and the detection roller 104 can be relied on to realize automatic belt storage.

[0090] Preferably, the frame 1 is provided with a sliding rail 302, a synchronous belt assembly 301 and a driving motor 303; the conveying direction of the synchronous belt assembly 301 is parallel to the sliding rail 302;

[0091] The mobile assembly 103 is installed on the slide rail 302, and the slide rail guides the mobile assembly to move between a first position and a second position. As shown in FIG. 1, the position of the mobile assembly is the first position, which is also the limit position of the mobile assembly moving to the left during actual work. The limit position of the mobile assembly moving to the right during actual work is the second position.

[0092] One side of the mobile assembly 103 is fixedly connected with the synchronous belt assembly 301. The driving motor 303 drives the mobile assembly through the synchronous belt assembly 301, and the action of the mobile assembly is controlled by the driving motor, so as to realize the switching of the mobile assembly between the first position and the second position.

[0093] As shown in FIG. 5, the present application also provides a changed structure: the mobile assembly 103 is divided into two independent components from a whole component. The mobile assembly 103 includes a first mobile support 1033 and a second mobile support 1034. The first mobile support 1033 and the second mobile support 1034 are of a split structure. The first mobile support 1033 and the second mobile support 1034 are both installed on the slide rail 302.

[0094] The mobile roller 1031 is installed on the front side of the first mobile support 1033, and the rope 1035 is installed on the rear side of the first mobile support 1033. The other end of the rope passes through the steering roller 1037 and is hung with a counterweight 1036.

[0095] The second mobile support 1034 is provided with a connecting part 1039, which is fixedly connected with the synchronous belt assembly 301 through the connecting part 1039. The driving motor drives the synchronous belt assembly and the second mobile support.

[0096] Referring to FIGS. 9-12, the second mobile support 1034 is located between the first mobile support 1033 and the fixed roller 102. After the storage of the belt is completed, the driving motor moves the second mobile support 1034 to the second position, and the first mobile support is still in the first position under the action of the counterweight. During the belt feeding stage, the belt feeding roller set 201 clamps the belt 2 and feeds the belt forward. The belt overcomes the gravity of the counterweight and drives the first mobile support. The present application does not select a very heavy counterweight. The weight of the counterweight is selected to be appropriate for the belt to drive the first mobile support relatively easily. For example, the weight of the counterweight is selected to be 1 kg. In the present application, the separation of the first mobile support and the second mobile support can further avoid the mutual interference between the belt feeding roller set 201 and the synchronous belt assembly 301 during the belt feeding process.

[0097] Preferably, the first moving support 1033 is provided with a photoelectric sensing sheet 1038, and the support body is provided with a photoelectric sensor; when the first moving support 1033 is located at the first position, the photoelectric sensing sheet 1038 triggers the photoelectric sensor. The principle of the photoelectric sensing sheet 1038 and the photoelectric sensor is the same as that of the trigger device 106, which is used for the controller to detect whether the reset of the first moving support is completed.

[0098] Preferably, a damping pad 1040 is arranged between the first moving support 1033 and the second moving support 1034, and the damping pad is fixed on the first moving support or the second moving support; so as to avoid the impact between the first moving support 1033 and the second moving support 1034 and generate noise.

[0099] The locking device 1012 on the reel assembly is an electromagnetic brake, and the function switching can be realized by energization or de-energization.

[0100] A bundling machine and a bundling method thereof, the bundling method is based on the bundling machine, and the specific steps include:

[0101] Step (1), in the initial state, the belt storage mechanism 10 normally stores the belt, and the reel 1011 is in the locked state;

[0102] Step (2), the belt feeding action is performed; the belt feeding roller set 201 clamps the belt 2 and feeds the belt forward, the belt in the taut state transmits force to the moving roller 1031, and the moving roller and the moving assembly 103 move from the first position to the second position; in combination with the state shown in FIG. 1, the moving assembly 103 moves from left to right; after the moving roller 1031 moves a certain distance, the belt feeding is completed; when the belt feeding is completed, the position of the moving roller 1031 is generally the middle position of the entire moving length;

[0103] Step (3), the front end of the belt is pressed; the structure of pressing is the prior art, and the pressing is realized by the configured top knife mechanism 60; the top knife mechanism 60 is the prior art, and the top knife of the top knife mechanism is provided with a belt passing groove in the middle, and the belt passes through the belt passing groove and then forms a loop; the top of the top knife is used for pressing the belt;

[0104] Step (4), the tape is retracted: the tape feeding roller group 201 loosens the tape, and the moving assembly 103 moves to the first position; the tape feeding roller group is disengaged from the tape, and the tape is pulled away by the first moving bracket; during the movement, the moving roller retracts the tape into the tape storage mechanism, and the tape is gradually tightened; because the loop knot mechanism has used a part of the tape, the tape reel is in the locked state, and the length of the tape makes the moving assembly unable to retract to the first position; when the tightening force of the tape gradually increases to a set value, the detection roller 104 is driven by the tape, and the detection roller drives the detection bracket 105; the trigger device 106 on the frame detects the movement of the detection bracket, and indirectly or directly controls the locking device 1012, so that the tape reel can rotate;

[0105] Step (5), the tape storage action is performed: the tape feeding roller group 201 and / or the rear knife 70 clamp the tape, the moving assembly 103 continues to move to the first position, the tape reel rotates and supplies the tape into the tape storage mechanism until the tape storage is completed; the rear knife 70 is a prior art, which is used to abut against the tape to prevent the loop knot formed in front from loosening, and the position abutted by the rear knife is the lower side of the position after the tape front end is wound around one turn, and the rear knife pushes upward and clamps the two layers of tape;

[0106] Step (6), the cutting mechanism 50 completes the cutting of the tape, and the welding mechanism 40 completes the melting of the tape; the packaging is completed; before the tape is cut, the rear knife 70 needs to abut against the tape, and the tape is cut and melted.

[0107] In the step (1), in the initial state, as shown in FIG. 6, the first moving bracket 1033 and the second moving bracket 1034 are in a separated state, the first moving bracket 1033 is located at the first position or slightly displaced from the first position under the action of the counterweight 1036, and the second moving bracket 1034 is located at the second position; the second moving bracket is located on the right side and abuts against the swing arm;

[0108] In the step (2), the moving roller 1031 and the first moving bracket 1033 overcome the gravity of the counterweight, and both the moving roller and the first moving bracket move a certain distance to the second position, and the tape feeding is completed;

[0109] In the step (4), the first moving support 1033 moves to the first position under the action of the counterweight; the second moving support 1034 moves to the first position under the action of the synchronous belt assembly and the driving motor; if the rotating speed of the driving motor is fast, the second moving support can catch up with the first moving support during the movement of the first moving support; when the first moving support moves to a certain extent, the belt is in a taut state, and the belt sent in the sending step has been completely returned to the belt storage mechanism 10; the taut force of the belt acts on the detection roller, and when the force of the belt reaches the force set by the electromagnetic damper, the detection roller drives the swing arm to act, and the sensor at the upper end of the swing arm is triggered; in the actual design scheme, the gravity of the counterweight is not enough to drive the swing arm, and the second moving support is needed to push;

[0110] In the step (5), the second moving support 1034 continues to move to the first position and pushes the first moving support 1033 to move to the first position; the belt disc rotates to store the belt until the first moving support reaches the first position; when the first moving support reaches the first position, the first moving support triggers the photoelectric signal; the electromagnetic brake relocks the belt disc; the driving motor 303 drives the synchronous belt assembly to rotate reversely according to the photoelectric signal, the second moving support moves to the second position and pushes the detection support 105 to reset; when the detection support resets, the sensor on the frame body is triggered, and the belt is completely stored; the work is completed.

[0111] As a variation of the method, in the step (5), after the belt sending roller set 201 clamps the belt, the step (6) is first executed, and then the step (5) is continued; specifically, after the belt sending roller set 201 clamps the belt, the controller controls the upward movement of the top knife of the top knife mechanism 60 and the upward movement of the cutting knife of the cutting knife mechanism to cut the belt, and the melting knife of the melting knife mechanism realizes the melting of the belt; after the top knife, the cutting knife and the melting knife are executed, they are reset; and then the reset of the detection support 105 is executed. It should be pointed out that in this method, the belt disc is first locked and then the swing arm is reset, so during the reset of the swing arm, the first moving support will slightly move to the right, which is a normal phenomenon and also belongs to the protection scope of the present application. The specific structure of the top knife, the cutting knife and the melting knife belongs to the prior art.

[0112] As another variation of the method, in the step (5), after the belt sending roller set 201 clamps the belt, the step (6) and the remaining actions of the step (5) can be executed simultaneously.

[0113] The above shows and describes the basic principles and main features of the present application and the advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A strapping machine, comprising a frame (1), a storage mechanism (10) for storing a strap and feeding the strap to a loop forming mechanism when needed; a loop forming mechanism (20) for advancing the strap along a loop-shaped track and forming a loop; a tightening mechanism (30) for tightening the strap in reverse and tightening the loop formed by the strap on a product to be strapped; a welding mechanism (40) for welding the first end of the loop to the second end of the loop; a cutting mechanism (50) for cutting the strap connected on the loop; characterized in that the storage mechanism (10) comprises: a reel assembly (101) for mounting a reel (1011); the reel assembly (101) is provided with a locking device (1012); the locking device (1012) is used to control the reel (1011) to be in a locked state or a rotatable state; when the reel (1011) is in the locked state, the reel (1011) cannot rotate; when the reel (1011) is in the rotatable state, the reel supplies the strap; a plurality of fixed rollers (102) mounted on one side of the storage mechanism; the fixed rollers are used for the strap to bend around; a plurality of movable rollers (1031) mounted on the other side of the storage mechanism; the movable rollers are used for the strap to bend around; the fixed rollers and the movable rollers cooperate to form a storage area (3); the tightening mechanism (30) comprises: a moving assembly (103) movably mounted on the frame; the moving assembly is provided with the movable rollers (1031); the moving assembly (103) can move between a first position and a second position; when the moving assembly (103) moves to the first position, the movable rollers (1031) are away from the fixed rollers (102) and perform storage; when the moving assembly (103) moves to the second position, the movable rollers (1031) are close to the fixed rollers (102) and perform feeding; a detection roller (104) for the strap to bend around; the detection roller is mounted on a detection bracket; the detection bracket (105) is rotatably or movably mounted on the frame; the detection bracket is provided with a damping component (107) that gives a certain resistance to the detection bracket; a trigger device (106) for obtaining the action of the detection bracket; when the detection bracket moves, the trigger device indirectly or directly controls the locking device (1012) to make the reel rotatable.

2. A strapping machine according to claim 1, wherein, the damping component (107) is an electromagnetic damper with adjustable resistance; a gear (1071) is mounted on the output shaft of the electromagnetic damper; the detection bracket (105) is a swing arm; the middle part of the swing arm is rotatably mounted on the frame; the lower end of the swing arm is provided with the detection roller (104); the upper end of the swing arm is provided with a tooth surface part (1054); the tooth surface part (1054) is engaged with the gear (1071); one side of the swing arm is provided with a sensing part (1051); the trigger device (106) is a sensor provided on the frame; the sensor detects the action of the sensing part (1051). ​ 3. A strapping machine according to claim 1, wherein, The plurality of fixed rollers (102) and the plurality of movable rollers (1031) are vertically arranged; the fixed rollers (102) and the movable rollers (1031) are staggered in the horizontal direction; the detection roller (104) is arranged in the same column as the fixed roller (102). Or, the plurality of fixed rollers (102) and the plurality of movable rollers (1031) are transversely arranged; the fixed rollers (102) and the movable rollers (1031) are staggered in the vertical direction; the detection roller (104) is arranged in the same row as the fixed roller (102).

4. The strapping machine of claim 1, wherein, The frame body (1) is provided with a sliding rail (302), a synchronous belt assembly (301) and a driving motor (303); the conveying direction of the synchronous belt assembly (301) is parallel to the sliding rail (302); The sliding rail (302) is provided with the moving assembly (103), and the sliding rail guides the moving assembly to move between the first position and the second position; One side of the moving assembly (103) is fixedly connected with the synchronous belt assembly (301); the driving motor (303) drives the moving assembly through the synchronous belt assembly (301).

5. A strapping machine according to claim 4, wherein, The moving assembly (103) comprises a first moving support (1033) and a second moving support (1034); the first moving support (1033) and the second moving support (1034) are both installed on the sliding rail (302); the first moving support (1033) and the second moving support (1034) are of a split structure; The moving roller (1031) is installed on the front side of the first moving support (1033), and a rope (1035) is installed on the rear side of the first moving support (1033), one end of the rope (1035) passes through a steering roller (1037) and suspends a counterweight (1036); The second moving support (1034) is fixedly connected with the synchronous belt assembly (301); The second moving support (1034) is located between the first moving support (1033) and the fixed roller (102).

6. A strapping machine according to claim 5, wherein, The first moving support (1033) is provided with a photoelectric sensing sheet (1038), and the frame body is provided with a photoelectric sensor; when the first moving support (1033) is located at the first position, the photoelectric sensing sheet (1038) triggers the photoelectric sensor.

7. A strapping machine according to claim 5, wherein, A damping pad (1040) is arranged between the first moving support (1033) and the second moving support (1034), and the damping pad is fixed on the first moving support or the second moving support; The locking device (1012) on the reel assembly is an electromagnetic brake.

8. A bundling method of a strapping machine, characterized by, The method is based on the banding machine of any one of claims 1-7, and the specific steps include: Step (1), in the initial state, the belt storage mechanism (10) normally stores the belt, and the reel (1011) is in the locked state; Step (2), execute the tape feeding action; the tape feeding roller group (201) clamps the tape (2) and feeds the tape forward, the tape in the tight state transmits force to the moving roller (1031), the moving roller and the moving assembly (103) move from the first position to the second position; after the moving roller (1031) moves a certain distance, the tape forms a loop; the tape feeding ends; Step (3), the front end of the tape is compressed; Step (4), execute the tape returning action: the tape feeding roller group (201) releases the tape, the moving assembly (103) moves to the first position; in the process of moving, the moving roller returns the tape to the inside of the tape storage mechanism, the tape is gradually tightened; when the tightening force of the tape gradually increases to a set value, the detection roller (104) is driven by the tape; the detection roller drives the detection support (105), the trigger device (106) on the frame detects the action of the detection support; the trigger device indirectly or directly controls the locking device (1012) of the tape reel, the locking device (1012) controls the tape reel (1011) to be in a rotatable state; Step (5), execute the tape storage action: the tape feeding roller group (201) and / or the rear knife (70) clamp the tape, the moving assembly (103) continues to move to the first position, the tape reel rotates and supplies the tape to the inside of the tape storage mechanism until the storage is completed; Step (6), the tape cutting mechanism (50) completes the tape cutting, and the welding mechanism (40) completes the tape welding; the packaging is completed.

9. The bundling method of claim 8, wherein, The moving assembly includes a first moving support (1033) and a second moving support (1034); the first moving support (1033) and the second moving support (1034) are both installed on the slide rail (302); the first moving support is provided with the moving roller (1031) on the front side, and the rope (1035) and the counterweight (1036) are installed on the rear side of the first moving support; The second moving support (1034) is fixedly connected with the synchronous belt assembly (301), and the driving motor drives the synchronous belt assembly and the second moving support; In step (1), in the initial state, the first moving support (1033) and the second moving support (1034) are in a separated state, the first moving support (1033) is located at the first position under the action of the counterweight (1036), and the second moving support (1034) is located at the second position; In step (2), the moving roller (1031) and the first moving support (1033) overcome the gravity of the counterweight, and both move a certain distance to the second position, and the tape feeding ends; In step (4), the first moving support (1033) moves to the first position under the action of the counterweight; the second moving support (1034) moves to the first position under the action of the synchronous belt assembly and the driving motor; when the first moving support moves to a certain degree, the tape is in a tight state, and the tape fed in the tape feeding step has all been returned to the tape storage mechanism (10); In the step (5), the second moving support (1034) continues to move to the first position and pushes the first moving support (1033) to move to the first position; the reel rotates to store the belt until the first moving support reaches the first position; when the first moving support reaches the first position, the first moving support triggers an optical signal; The driving motor (303) drives the synchronous belt assembly to rotate reversely according to the optical signal, the second moving support moves to the second position and pushes the detection support (105) to reset; the locking device (1012) re-locks the reel; When the detection support resets, a sensor on the frame triggers, and the belt is completely stored.

10. The bundling method of claim 9, wherein, In the step (5), after the belt is clamped by the belt feeding roller set (201), the step (6) is performed first and then the step (5) is continued to be performed, or the step (5) and the step (6) are performed simultaneously.

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