Buckle-type strapping machine head for packaging

Abstract

The present invention relates to a buckle strapping machine head for packaging, comprising a buckle servo drive unit connected to a main housing unit, a servo conveying strap unit, a strap tensioning unit, a buckle hopper unit, a belt guide door unit and a buckle module unit; the buckle servo drive unit can drive the buckle module unit to engage the buckle through the buckle servo motor of the buckle servo drive unit, thereby strapping the strap; the servo conveying strap unit is connected to a planetary reducer by a servo motor to drive the conveying belt wheel of the conveying strap to rotate forward and reversely, thereby completing the belt feeding and belt taking-up functions; the strap tensioning unit is driven by an air motor to drive the tensioning wheel to rotate, tighten the strap, and complete the tensioning function; the buckle hopper unit stores buckles and is provided with a pushing device to push the buckles into the buckle module unit; the belt guide door unit is a rotatable structure, and after rotation, it forms a strap conveying channel with the hopper unit and the lower end of the main housing unit. The present invention is stable and reliable to use.

Description

Technical Field

[0001] The invention belongs to the field of packaging machinery, and relates to a strapping machine for heavy materials or goods, and in particular to a buckle-type strapping machine head for packaging. Background Art

[0002] The principle of strapping machine is to use strapping as strapping material and connect the strapping with buckles or buckles. According to the different power used, it can be divided into pneumatic strapping machine and manual strapping machine; according to the different strapping connection methods, it can be divided into buckle and buckle-free strapping machine. When working, the buckle-free strapping machine uses the bite of the upper and lower cutters of the machine to make the two ends of the strapping fit together to meet the strapping requirements. It is suitable for flat or vertical strapping of various packages. It has the characteristics of light weight, easy operation, strong strapping force and easy to carry. It can be used freely especially for large packages, heavy packages and other packages that cannot be carried manually. It can be used not only on the horizontal plane, but also on the vertical plane. It is an ideal strapping equipment.

[0003] The current buckle strapping machine head uses an air motor and a gearbox to convey and tension the straps. It consumes a lot of air, has a slow speed, inaccurate length of the straps, a complex structure and high maintenance costs. The snapping power uses a cylinder. The cylinder consumes a lot of air and has high requirements for the input air pressure of the equipment. There is no feedback when the cylinder extends, and there is no feedback when the snap is not in place. When the air pressure fluctuates, it is easy to produce insufficient snapping force and unqualified snapping. Summary of the invention

[0004] Purpose of the Invention

[0005] In order to solve the various problems of the prior art using a cylinder, an air motor and a variable box to convey and tension the strap, the present invention provides a buckle-type strapping machine head for packaging that is stable and reliable.

[0006] Technical Solution

[0007] A buckle strapping machine head for packaging, comprising a buckle servo drive unit connected to a main housing unit, a servo conveying strap unit, a strap tensioning unit, a buckle hopper unit, a strap guide door unit and a buckle module unit;

[0008] The snap servo drive unit can drive the snap module unit to snap the belt buckle through the snap servo motor of the snap servo drive unit, thereby tying the strap;

[0009] The servo conveying strapping unit is composed of a servo motor connected to a planetary reducer to drive the conveying belt wheel of the conveying strapping to rotate forward and reverse to complete the functions of conveying and collecting the strapping;

[0010] The strap tensioning unit is driven by an air motor to rotate the tensioning wheel, tighten the strap, and complete the tensioning function;

[0011] The buckle magazine unit stores buckles and is provided with a pushing device capable of pushing the buckles into the buckle module unit;

[0012] The belt guide door unit is a rotatable structure, and after rotation, it forms a conveying channel for the strap together with the buckle magazine unit and the lower end of the main shell unit.

[0013] Further, the main housing unit comprises a front housing and a rear housing fixedly connected together, a strap inlet is fixed to the upper end of the rear housing, a mounting position 1 is provided on one side of the rear housing, and a mounting position 2 is also connected thereto, and a mounting position 3 is provided on the other side of the rear housing;

[0014] Furthermore, the snap-on servo drive unit includes a mounting base plate, which is fixedly connected to the upper ends of the front housing and the rear housing, and the upper end of the mounting base plate is fixed with a screw front bearing seat and a screw rear bearing seat, which are respectively connected to the two ends of the screw, and one end of the screw located on the side of the screw front bearing seat is fixedly connected to a screw synchronous pulley, and a reducer is fixed on the side of the mounting base plate located on the screw front bearing seat, and a reducer synchronous pulley is fixedly connected to the output shaft of the reducer, and the reducer synchronous pulley and the screw synchronous pulley are connected together through a synchronous belt drive, and one side of the reducer is connected to a snap-on servo motor The rotating shaft of the bite-button servo motor is connected to the input shaft of the reducer, a screw nut is fixedly connected to the screw, and two push rod guide rails are fixed on both sides of the upper end surface of the mounting base plate, a sliding push rod is slidably connected between the two push rod guide rails, the sliding push rod is fixedly connected to the lower end of the screw nut, two lower push rods are hinged on the sliding push rod, the sliding push rod is hinged to the upper end of the lower push rod, the middle parts of the two lower push rods are respectively hinged to one end of a support rod, and the other ends of the two support rods are hinged to the support hinge bearing seat, and the support hinge bearing seat is fixed next to the rear bearing seat of the screw.

[0015] Furthermore, the snap module unit includes a main body consisting of a front support plate and a rear support plate, the front support plate and the rear support plate are fixed in the installation cavity of the front shell, a push block is slidably arranged between the front support plate and the rear support plate, the upper end of the push block is hinged to the lower end of the lower push rod through a connecting pin, the lower end of the push block is hinged to the upper end of the upper jaw and the upper ends of the front and rear groups of jaw connecting rods, the lower ends of the front and rear groups of jaw connecting rods are hinged to the upper ends of the two jaws respectively, the middle sides of the two jaws are hinged to the front support plate and the rear support plate, the support block is located between the two jaws, and circular grooves are opened on both sides, and the two sides of the support block are rotatably connected to the rotating shaft hinged to the middle sides of the two jaws.

[0016] Furthermore, the servo conveyor strapping unit (2) comprises a servo motor, a planetary reducer, a pulley shaft, a conveyor pulley, a belt feed pulley idler, an eccentric sleeve bearing, an eccentric sleeve, an eccentric sleeve cylinder and a pulley bearing, the housing of the servo motor is connected to the housing of the planetary reducer, the motor shaft of the servo motor is connected to the input shaft of the planetary reducer, the housing of the planetary reducer is connected to the eccentric sleeve, the planetary reducer is connected to the pulley shaft, the pulley shaft passes through the eccentric sleeve and the other end of the pulley shaft is fixed with a conveyor pulley, one side of the outer arc of the conveyor pulley is provided with a belt feed pulley idler matched therewith, the belt feed pulley idler is arranged on the idler seat through the rotating shaft of the belt feed pulley idler, and the idler seat is fixedly connected to the rear housing. On the side, the idler wheel seat is located between the conveyor pulley and the feed pulley idler wheel and is provided with a strap channel. The upper end of the strap channel is connected to the strap inlet and docked. The strap channel is two opposite grooves. The two opposite grooves are located on both sides of the conveyor pulley and the feed pulley idler wheel. The housing of the planetary reducer is connected to one end of the connecting flange by screws, and the connecting flange is fixedly connected to the mounting position, and the other end of the connecting flange is connected to the eccentric sleeve by screws. Two sets of pulley bearings are provided between the eccentric sleeve and the pulley shaft, which are the rear bearing of the pulley shaft and the front bearing of the pulley shaft. An eccentric sleeve bearing is provided on the outer periphery of the eccentric sleeve. The telescopic end of the eccentric sleeve cylinder is also connected to the side of the eccentric sleeve, and the eccentric sleeve cylinder is fixedly connected to the upper end of the rear shell body.

[0017] The cam is secured to the bottom of the chassis and is provided with a plurality of camshafts, each of which is connected to a plurality of chain links and are pivotally connected to the chassis. The camshaft is secured to the bottom of the chassis and is pivotally connected to the chassis.

[0018] Furthermore, the buckle silo unit includes a vertically arranged silo, two guard plates are provided at the lower end of the silo, and a strap conveying channel is connected to the strap channel between the two guard plates. The silo is fixed to the front end of the front shell body through the silo mounting plates on both sides thereof, a filling port for loading the strap buckles is provided on one side of the silo, a vertical inner through cavity for storing the strap buckles is provided in the silo, a sensor for measuring the height of the strap buckles in the vertical inner through cavity is connected to the silo, a detachable cover plate is provided at the upper part of the silo, a latch can be inserted into the cover plate and the end portion is located in the pressing block, a coil spring is provided in the pressing block, one end of the coil spring is fixedly connected to the pressing block, and the other end of the coil spring is connected to the lowermost end of the silo at the side in the silo, the coil spring always gives a downward pulling force to the pressing block, and the pressing block is also connected to a handle for manually lifting the height of the pressing block, a buckle feeding cylinder is fixed on one side of the front shell body, the telescopic rod of the buckle feeding cylinder is connected to a connecting rod, and the connecting rod is connected to a push piece, and the push piece is located in the strap conveying channel and can slide. Furthermore, the latch is a retractable and spring-loaded latch.

[0019] Furthermore, the guide door unit includes a guide door, which is fixed on a rear connecting rod of the guide door and one end of a front connecting rod of the guide door, a bearing is provided on one side of the other end of the front connecting rod of the guide door, and a bearing seat is provided next to the front connecting rod of the guide door, a bolt passes through the bearing seat and the other end is connected to the bearing to rotatably connect the bearing seat and the front connecting rod of the guide door together, the bearing seat is fixedly connected to the front shell body, one side of the rear connecting rod of the guide door is connected to one end of a rotating shaft, a gear is fixed on the rotating shaft, the other end of the rotating shaft is connected to the bearing seat, the bearing seat is fixedly connected to the rear shell body, the telescopic cylinder is fixed on the mounting position two, the telescopic shaft of the telescopic cylinder passes through the mounting position two and is fixedly connected to a round rod rack, and the round rod rack is meshed with the gear.

[0020] Advantages and effects

[0021] The present invention uses two sets of devices for the servo conveying strap unit and the tensioning strap unit, so that the functions of the complex air motor plus gearbox structure are separated, and the two parts have independent functions and a simple structure. Reduce the demand for compressed air in the factory and reduce energy consumption. The conveying strap is driven by a servo motor, which has low gas consumption, high speed, improved production efficiency and accurate conveying strap length. The tensioning strap is driven by an air motor, which has a large torque, a short working time of the tensioning air motor and low gas consumption. The structure is simple and the failure rate is low. The snap-on servo drive unit uses a servo motor to drive the screw drive connecting rod as the power source of the snap-on unit. It does not require compressed air, the snap-on is stable and reliable, the position control is accurate, the snap-on power is stable and reliable, and is not affected by air pressure fluctuations. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. The protection scope of the present invention is not limited to the following description.

[0023] Figure 1Schematic diagram of the three-dimensional structure of the buckle strapping machine head for packaging, angle 1;

[0024] Figure 2 Schematic diagram of the three-dimensional structure of the buckle strapping machine head for packaging, angle 2;

[0025] Figure 3 Schematic diagram of the three-dimensional structure of the buckle strapping machine head for packaging, angle 3;

[0026] Figure 4 It is a schematic diagram of the plan structure of a buckle-type strapping machine head for packaging;

[0027] Figure 5.1-5.4 It is a structural schematic diagram of a snap-on servo drive unit and a snap-on module unit;

[0028] Figure 6.1-Figure 6.3 It is a schematic diagram of a servo conveying strapping unit;

[0029] Figure 7.1-Figure 7.4 is a schematic diagram of a strap tensioning unit;

[0030] Figure 8.1-Figure 8.4 It is a schematic diagram of a buckle silo unit;

[0031] Figure 9.1-Figure 9.2 is a schematic diagram of the main shell unit;

[0032] Fig.10 Schematic diagram of the guide gate unit.

[0033] Description of the accompanying drawings: 1. buckle servo drive unit; 2. servo conveying strap unit; 3. strap tensioning unit; 4. buckle silo unit; 5. main housing unit; 6. belt guide door unit; 7. buckle module unit; 101. buckle servo motor; 102. reducer; 103. reducer synchronous pulley; 104. synchronous belt; 105. screw synchronous pulley; 106. screw front bearing seat; 107. screw nut; 108. screw; 109. screw rear bearing seat; 110. push rod guide rail; 111. sliding push rod; 1 12. Install the base plate; 113. Push rod; 114. Support hinge bearing seat; 115. Support rod; 201. Servo motor; 202. Planetary reducer; 203. Connecting flange; 204. Pulley shaft; 205. Pulley shaft rear bearing; 206. Pulley shaft front bearing; 207. Conveyor pulley; 208. Conveyor pulley idler; 209. Eccentric sleeve bearing; 210. Eccentric sleeve; 211. Strapping channel; 212. Eccentric sleeve cylinder; 213. Idle pulley seat; 301. Air motor; 302. Flange; 303. Swing frame; 304, front support bearing; 305, swing shaft; 306, strap channel; 307, support cylinder; 308, tension wheel; 309, tension wheel idler; 310, tension shaft; 311, support bearing; 401, silo; 402, buckle cylinder; 403, push piece; 404, guard plate; 405, buckle; 406, sensor; 407, latch; 408, handle; 409, coil spring; 410, pressure block; 411, silo mounting plate; 412, connecting rod; 501, front shell; 502, rear shell Body; 503, strap entrance; 504, installation position one; 505, installation position two; 506, installation position three; 601, telescopic cylinder; 602, round rod rack; 603, gear; 604, bearing seat; 605, rear connecting rod of guide belt door; 606, guide belt door; 607, front connecting rod of guide belt door; 608, bearing; 609, bearing seat; 701, push block; 702, upper jaw; 703, jaw connecting rod; 704, jaw; 705, support block; 706, front support plate; 707, rear support plate; 708, connecting pin. DETAILED DESCRIPTION

[0034] like Figure 1-Figure 10 As shown, a buckle strapping machine head for packaging includes a buckle servo drive unit 1 connected to a main housing unit 5, a servo conveying strapping unit 2, a strapping tensioning unit 3, a buckle bin unit 4, a strap guide door unit 6 and a buckle module unit 7;

[0035] The snap servo drive unit 1 can drive the snap module unit 7 to snap the belt buckle 405 through the snap servo motor 101 of the snap servo drive unit 1, thereby tying the strap;

[0036] The servo conveying strapping unit 2 is composed of a servo motor 201 connected to a planetary reducer 202, which drives a conveying belt wheel 207 to convey the strapping in a positive and negative direction, thereby completing the functions of conveying and collecting the strapping.

[0037] The strap tensioning unit 3 is driven by the air motor 301 to rotate the tensioning wheel 308 to tighten the strap to complete the tensioning function;

[0038] The buckle magazine unit 4 stores buckles 405 and is provided with a pushing device capable of pushing the buckles 405 into the buckle module unit 7;

[0039] The belt guide door unit 6 is a rotatable structure, and after rotation, it forms a conveying channel for the strap together with the buckle magazine unit 4 and the lower end of the main shell unit 5.

[0040] The main housing unit 5 includes a front housing 501 and a rear housing 502 that are fixedly connected together. A strap inlet 503 is fixedly provided at the upper end of the rear housing 502. A mounting position 1 504 is provided on one side of the rear housing 502, and a mounting position 2 505 is also connected thereto. A mounting position 3 506 is provided on the other side of the rear housing 502. The snap-on servo drive unit 1 includes a mounting base plate 112 that is fixedly connected to the front housing 501. The upper end of the mounting base 112 is fixed with a screw front bearing seat 106 and a screw rear bearing seat 109, which are respectively connected to the two ends of the screw 108. The end of the screw 108 located on the side of the screw front bearing seat 106 is fixedly connected with a screw synchronous pulley 105. A reducer 102 is fixed on one side of the mounting base 112 located on the side of the screw front bearing seat 106. A reducer synchronous pulley 103 is fixedly connected to the output shaft of the reducer 102. The reducer synchronous pulley 103 and the screw synchronous pulley 105 are connected by a synchronous belt 104. The transmission is connected together, one side of the reducer 102 is connected to the snap-on servo motor 101, the motor housing of the servo motor 101 and the housing of the reducer 102 are fixed together by screws, the rotating shaft of the snap-on servo motor 101 is connected to the input shaft of the reducer 102, and the screw nut 107 is fixedly connected to the screw 108, and two push rod guide rails 110 are fixed on both sides of the upper end surface of the mounting base plate 112, and a sliding push rod 111 is slidably connected between the two push rod guide rails 110, and the sliding push rod 111 is fixedly connected to the lower end of the screw nut 107. The rotation of the screw 108 will drive the screw nut 107 to move horizontally, and the push rod 111 is guided by the push rod guide rail 110, and the horizontal reciprocating movement of the push rod 111 can be achieved through the forward and reverse rotation of the snap-on servo motor. Two lower push rods 113 are hinged on the sliding push rod 111, which are used to convert horizontal movement into vertical movement of the lower end of the lower push rod 113. The sliding push rod 111 is hinged at the upper end of the lower push rod 113, and the middle parts of the two lower push rods 113 are respectively hinged on one end of a support rod 115, and the other ends of the two support rods 115 are hinged on the support hinge bearing seat 114, and the support hinge bearing seat 114 is fixed next to the rear bearing seat 109 of the screw.

[0041] The snap module unit 7 includes a main body consisting of a front support plate 706 and a rear support plate 707, the front support plate 706 and the rear support plate 707 are fixed in the installation cavity of the front shell 501, a push block 701 is slidably arranged between the front support plate 706 and the rear support plate 707, the upper end of the push block 701 is hinged to the lower end of the lower push rod 113 through a connecting pin 708, the lower end of the push block 701 is hinged to the upper end of the upper bite claw 702 and the upper ends of the front and rear groups of bite claw connecting rods 703, the lower ends of the front and rear groups of bite claw connecting rods 703 are hinged to the upper ends of the two bite claws 704 respectively, the middle sides of the two bite claws 704 are hinged to the front support plate 706 and the rear support plate 707, the support block 705 is located between the two bite claws 704, and circular grooves are opened on both sides, and the two sides of the support block 705 are rotatably connected to the rotating shaft hinged to the middle sides of the two bite claws 704. The push block 701 is connected to the upper jaw 702 to move downward, and drives the jaw 704 to bite through the jaw connecting rod 703. The forward and reverse rotation of the snap servo motor 101 eventually drives the jaw 702 to move up and down and the jaw 704 to bite and open.

[0042] The servo conveyor strapping unit 2 includes a servo motor 201, a planetary reducer 202, a pulley shaft 204, a conveyor pulley 207, a conveyor pulley idler 208, an eccentric sleeve bearing 209, an eccentric sleeve 210, an eccentric sleeve cylinder 212 and a pulley bearing. The housing of the servo motor 201 is connected to the housing of the planetary reducer 202, the motor shaft of the servo motor 201 is connected to the input shaft of the planetary reducer 202, and the input shaft of the planetary reducer 202 is connected to the input shaft of the planetary reducer 202. The housing is connected with the eccentric sleeve 210, the planetary reducer 202 is connected with the pulley shaft 204, the pulley shaft 204 passes through the eccentric sleeve 210 and the other end of the pulley shaft 204 is fixed with a conveying pulley 207, and the outer arc side of the conveying pulley 207 is provided with a conveying pulley idler 208 matched therewith, and the conveying pulley idler 208 is arranged on the idler seat 213 through the rotating shaft of the conveying pulley idler 208, and the idler seat 213 is fixedly connected to the side of the rear housing 502 The idler wheel seat 213 is located between the conveyor belt wheel 207 and the feed belt wheel idler wheel 208, and a strapping channel 211 is provided. The upper end of the strapping channel 211 is connected and docked with the strapping entrance 503. The strapping channel 211 is two opposite grooves, and the two opposite grooves are located on both sides of the conveyor belt wheel 207 and the feed belt wheel idler wheel 208. The housing of the planetary reducer 202 is connected to one end of the connecting flange 203 by screws, and the connecting flange 203 is fixed to the mounting position 504. Fixed connection, the other end of the connecting flange 203 is connected to the eccentric sleeve 210 by screws, two sets of pulley bearings are arranged between the eccentric sleeve 210 and the pulley shaft 204, namely the pulley shaft rear bearing 205 and the pulley shaft front bearing 206, the outer periphery of the eccentric sleeve 210 is provided with an eccentric sleeve bearing 209, and the side of the eccentric sleeve 210 is also connected to the telescopic end of the eccentric sleeve cylinder 212, and the eccentric sleeve cylinder 212 is fixedly connected to the upper end of the rear shell body 502.

[0043] The driving mechanism of the entire servo conveying strapping unit 2 can rotate around the eccentric sleeve bearing 209. The eccentric sleeve cylinder 212 is connected to the eccentric sleeve 210, and the extension and contraction of the cylinder can rotate the eccentric sleeve 210 and the entire servo driving mechanism by a certain angle.

[0044] When the servo conveyor strapping unit 2 is working, the eccentric sleeve cylinder 212 first contracts, and the strap is inserted between the conveyor belt wheel 207 and the idler wheel 208 of the belt feeding wheel along the strapping channel 211. Then the eccentric sleeve cylinder 212 extends, driving the eccentric sleeve 210 and the entire servo drive mechanism to rotate. Since it is an eccentric mechanism, the conveyor belt wheel 207 and the eccentric sleeve 210 are not concentric, so the rotation of the eccentric sleeve 210 will rotate the conveyor belt wheel 207 to move toward the idler wheel 208 of the belt feeding wheel, clamping the strap. At this time, starting the servo motor to rotate will cause the conveyor belt wheel 207 to rotate and drive the strap to be transported out.

[0045] The strap tensioning unit 3 includes an air motor 301, the end of the air motor 301 is connected to a swing frame 303 through a flange 302, an opening is provided in the middle of the swing frame 303, one end of the tensioning shaft 310 is located in the flange 302 and the swing frame 303, the output shaft of the air motor 301 is key-connected with the tensioning shaft 310, a support bearing 311 is provided between the tensioning shaft 310 and the swing frame 303, the other end of the tensioning shaft 310 passes through the swing frame 303 and is fixedly connected to a front support bearing 304, and a tensioning wheel 310 is fixedly connected in the opening of the swing frame 303 on the tensioning shaft 310 08, a tensioning wheel idler wheel 309 is provided at the lower side of the tensioning wheel 308, and the tensioning wheel idler wheel 309 is rotatably connected to the main structure of the strap channel 306, and the upper end of the strap channel 306 is butted with the lower end of the strap channel 211, and the main structure of the strap channel 306 is fixedly connected to the rear housing 502, and the rear housing 502 is also fixedly connected to the supporting cylinder 307, and the telescopic end of the supporting cylinder 307 is located at the lower side of the front supporting bearing 304, and the swing frame 303 is rotatably connected to the side away from the opening with the swing shaft 305, and the swing shaft 305 is rotatably connected to the mounting position 3 506. The strap will be clamped between the tensioning wheel idler wheel 309 and the tensioning wheel 308 during operation, and the air motor 301 rotates to drive the tensioning wheel 308 to rotate and pull the strap. The swing frame 303 is mounted on the main housing unit 5 via the swing shaft 306. The support cylinder 307 below the swing frame 303 extends and retracts, which drives the swing frame 303 to swing up and down, and finally achieves the clamping and separation between the tension wheel idler wheel 309 and the tension wheel 308. When the strap tensioning unit 3 is working, the support cylinder 307 is first retracted, driving the tension wheel idler wheel 309 and the tension wheel 308 to clamp the strap, and the air motor 301 is ventilated and rotated, which is transmitted to the tension wheel 308 through the tensioning shaft 301 to rotate, so that the strap is pulled back to form the tensioning force required by the equipment.

[0046] The buckle silo unit 4 includes a vertically arranged silo 401, and two guard plates 404 are provided at the lower end of the silo 401. A strap conveying channel is connected to the strap channel 306 between the two guard plates 404. The silo 401 is fixed to the front end of the front shell 501 through the silo mounting plates 411 on both sides thereof. A loading port for loading the buckle 405 is provided on one side of the silo 401. A vertical inner cavity for storing the buckle 405 is provided in the silo 401. The silo 401 is connected to a sensor 406 for measuring the height of the buckle 405 in the vertical inner cavity. A detachable cover is provided on the upper part of the silo 401. The latch 407 can be inserted into the cover and the end is located in the pressure block 410, so that the pressure block 410 can be kept above the silo 401 to facilitate the addition of materials below. The latch 407 is a retractable spring latch that can rebound automatically. A coil spring 409 is provided in the pressing block 410. One end of the coil spring 409 is fixedly connected to the pressing block 410. The other end of the coil spring 409 is connected to the lower end of the silo 401 on the side of the silo 401. The coil spring 409 always gives a downward pulling force to the pressing block 410. The pressing block 410 is also connected to a handle 408 for manually raising the height of the pressing block 410. A buckle feeding cylinder 402 is fixed to one side of the front shell 501. The telescopic rod of the buckle feeding cylinder 402 is connected to a connecting rod 412. The connecting rod 412 is connected to a push piece 403. The push piece 403 is located in the strap conveying channel and can slide. The buckles 405 are stacked and placed in the silo 401. The buckles 405 on the top layer are pressed by the pressing block 411. Under the pulling force of the coil spring 410, the buckles 405 are always pressed downward to ensure continuous and smooth feeding. =The feeding cylinder 402 drives the push piece 403 to slide through the connecting rod 412. When the feeding cylinder 402 retracts, the push piece 403 pushes the lowermost buckle 405 to a specified position, completing one feeding.

[0047] The belt guide door unit 6 includes a belt guide door 606, which is fixed to one end of the belt guide door rear link 605 and the belt guide door front link 607. A bearing 608 is provided on one side of the other end of the belt guide door front link 607. A bearing seat 609 is also provided next to the belt guide door front link 607. A bolt passes through the bearing seat 609 and the other end is connected to the bearing 608 to rotatably connect the bearing seat 609 and the belt guide door front link 607 together. The bearing seat 609 is fixed. Connected to the front housing 501, one side of the guide door rear connecting rod 605 is connected to one end of a rotating shaft, a gear 603 is fixed to the rotating shaft, and the other end of the rotating shaft is connected to the bearing seat 604, and the bearing seat 604 is fixedly connected to the rear housing 502. The telescopic cylinder 601 is fixed to the second mounting position 505, and the telescopic shaft of the telescopic cylinder 601 passes through the second mounting position 505 and is fixedly connected to a round bar rack 602, which is meshed with the gear 603. The guide door 606 can rotate around the axis of the bearing seat 609. The telescopic cylinder 601 will drive the round bar rack 602 to extend and retract, further drive the gear 603 to rotate, and further drive the guide door 606 to rotate and switch.

[0048] The buckle strapping head for packaging is installed on the whole strapping machine for use. The strapping machine is provided with a control system, a mechanism for driving the strapping head to move, and a channel for strapping. Before the equipment is started, the strap has been manually inserted into the inside of the buckle strapping head, i.e., the strapping entrance 503 and the conveyor belt wheel 207 of the servo conveyor strapping unit 2. When the whole strapping machine is working, the strapped object is on the strapping equipment station, the buckle hopper unit 4 pushes a buckle into the bite buckle module unit 7, and the guide belt door unit 6 is closed to form a strapping conveying channel. The servo conveyor strapping unit 2 is started, the conveyor belt wheel rotates forward to drive the strapping, the strapping head passes through the bite buckle module unit 7, passes through the external strapping conveying channel of the strapping equipment, and after a circle, returns to the strapping channel formed by the guide belt door unit 6 of the buckle strapping head, and the strapping head finally enters the bite buckle module unit 7 again, forming two layers of straps and buckles overlapping at the bite buckle module unit 7. Next, the snap servo drive unit 1 drives the snap module unit 7 to engage a part and clamp the head of the strap. At this time, the guide door unit 6 opens, and the strapping equipment drives the strapping head of the buckle strap close to the surface of the strapped object. The servo conveying strap unit 2 starts and the conveying belt wheel reverses to retract the strap, so that the strap is pulled out of the strapping channel of the equipment and wrapped on the packaged object. When the strap is close to the packaged object, the servo conveying strap unit 2 stops, the strap tensioning unit 3 starts, and the air motor drives the tensioning wheel to tighten the strap to the set tension. The snap servo drive unit 1 drives the snap module unit 7 again to fully engage, combine the two layers of straps and the buckle together, and cut off the tail of the strap to form a complete ring-shaped closed strap. The strapping equipment drives the strapping head of the buckle strap back to the original position of the equipment, completing a working cycle.

[0049] Obviously, the above-mentioned embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the embodiments of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is impossible to list all the embodiments here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A buckle strapping machine head for packaging, characterized in that: It comprises a buckle servo drive unit (1) connected to a main housing unit (5), a servo conveying strap unit (2), a strap tensioning unit (3), a buckle silo unit (4), a strap guide door unit (6) and a buckle module unit (7); The snap servo drive unit (1) can drive the snap module unit (7) to engage the belt buckle (405) through the snap servo motor (101) of the snap servo drive unit (1), thereby tying the strap; The servo conveying strap unit (2) is composed of a servo motor (201) connected to a planetary reducer (202) to drive a conveying belt wheel (207) for conveying the strap to rotate forward and reverse, thereby completing the functions of conveying and collecting the strap; The strap tensioning unit (3) is driven by an air motor (301) to rotate a tensioning wheel (308) to tighten the strap and complete the tensioning function; The belt buckle storage unit (4) stores belt buckles (405) and is provided with a pushing device capable of pushing the belt buckles (405) into the buckle module unit (7); The belt guide door unit (6) is a rotatable structure, and after rotation, forms a conveying channel for the strap together with the belt buckle bin unit (4) and the lower end of the main housing unit (5); The servo conveyor strapping unit (2) comprises a servo motor (201), a planetary reducer (202), a pulley shaft (204), a conveyor pulley (207), a conveyor pulley idler (208), an eccentric sleeve bearing (209), an eccentric sleeve (210), an eccentric sleeve cylinder (212) and a pulley bearing. The housing of the servo motor (201) is connected to the housing of the planetary reducer (202), the motor shaft of the servo motor (201) is connected to the input shaft of the planetary reducer (202), and the planetary reducer (20 2) is connected with the eccentric sleeve (210), the planetary reducer (202) is connected with the pulley shaft (204), the pulley shaft (204) passes through the eccentric sleeve (210) and the other end of the pulley shaft (204) is fixed with a conveying pulley (207), an outer arc side of the conveying pulley (207) is provided with a conveying pulley idler wheel (208) matched with it, the conveying pulley idler wheel (208) is arranged on the idler wheel seat (213) through the rotating shaft of the conveying pulley idler wheel (208), and the idler wheel seat (213) is fixedly connected to the rear housing (502) ), an idler wheel seat (213) is provided between the conveyor belt wheel (207) and the feed belt wheel idler wheel (208) with a strapping channel (211), the upper end of the strapping channel (211) is connected to and butted with the strapping entrance (503), the strapping channel (211) is two opposite grooves, the two opposite grooves are located on both sides of the conveyor belt wheel (207) and the feed belt wheel idler wheel (208), the housing of the planetary reducer (202) is connected to one end of the connecting flange (203) by screws, and the connecting flange (203) is connected to the mounting position (503) 4) fixed connection, the other end of the connecting flange (203) is connected to the eccentric sleeve (210) by screws, two sets of pulley bearings are provided between the eccentric sleeve (210) and the pulley shaft (204), namely the pulley shaft rear bearing (205) and the pulley shaft front bearing (206), the outer periphery of the eccentric sleeve (210) is provided with an eccentric sleeve bearing (209), the side of the eccentric sleeve (210) is also connected to the telescopic end of the eccentric sleeve cylinder (212), and the eccentric sleeve cylinder (212) is fixedly connected to the upper end of the rear housing (502); The strap tensioning unit (3) comprises an air motor (301), the end of the air motor (301) is connected to a swing frame (303) via a flange (302), an opening is provided in the middle of the swing frame (303), one end of a tensioning shaft (310) is located in the flange (302) and the swing frame (303), the output shaft of the air motor (301) is key-connected to the tensioning shaft (310), a support bearing (311) is provided between the tensioning shaft (310) and the swing frame (303), the other end of the tensioning shaft (310) passes through the swing frame (303) and is fixedly connected to a front support bearing (304), and a tensioning shaft (310) is fixedly connected to the opening of the swing frame (303). A tensioning wheel (308) is provided at the lower side of the tensioning wheel (308), and the tensioning wheel idler wheel (309) is rotatably connected to the main structure of the strap channel (306). The upper end of the strap channel (306) is butt-jointed with the lower end of the strap channel (211). The main structure of the strap channel (306) is fixedly connected to the rear shell (502). The rear shell (502) is also fixedly connected to a supporting cylinder (307). The telescopic end of the supporting cylinder (307) is located at the lower side of the front supporting bearing (304). The side of the swing frame (303) away from the opening is rotatably connected to a swing shaft (305), and the swing shaft (305) is rotatably connected to the mounting position three (506).

2. The buckle strapping machine head for packaging according to claim 1, characterized in that: The main housing unit (5) comprises a front housing (501) and a rear housing (502) which are fixedly connected together, a strap inlet (503) is fixedly provided at the upper end of the rear housing (502), a mounting position 1 (504) is provided on one side of the rear housing (502), and a mounting position 2 (505) is also connected thereto, and a mounting position 3 (506) is provided on the other side of the rear housing (502).

3. The buckle strapping machine head for packaging according to claim 2, characterized in that: The snap-on servo drive unit (1) comprises a mounting base plate (112), the mounting base plate (112) being fixedly connected to the upper ends of the front housing (501) and the rear housing (502), the upper end of the mounting base plate (112) being fixedly provided with a lead screw front bearing seat (106) and a lead screw rear bearing seat (109), which are respectively connected to the two ends of the lead screw (108), one end of the lead screw (108) located on the lead screw front bearing seat (106) side being fixedly connected to a lead screw synchronous pulley (105), a reducer (102) being fixedly provided on one side of the mounting base plate (112) located on the lead screw front bearing seat (106), a reducer synchronous pulley (103) being fixedly provided on the output shaft of the reducer (102), the reducer synchronous pulley (103) and the lead screw synchronous pulley (105) being connected together by a synchronous belt (104), and a snap-on servo motor (101) being connected to one side of the reducer (102). ), the rotating shaft of the snap-on servo motor (101) is connected to the input shaft of the reducer (102), a lead screw nut (107) is fixedly connected to the lead screw (108), two push rod guide rails (110) are fixedly provided on both sides of the upper end surface of the mounting base plate (112), a sliding push rod (111) is slidably connected between the two push rod guide rails (110), and the sliding push rod (111) is fixedly connected to the lower end of the lead screw nut (107), Two lower push rods (113) are hinged on the sliding push rod (111), and the sliding push rod (111) is hinged on the upper end of the lower push rod (113). The middle parts of the two lower push rods (113) are respectively hinged on one end of a support rod (115), and the other ends of the two support rods (115) are hinged on the support hinge bearing seat (114), and the support hinge bearing seat (114) is fixed beside the screw rear bearing seat (109).

4. The buckle strapping machine head for packaging according to claim 3, characterized in that: The snap-on module unit (7) includes a main body consisting of a front support plate (706) and a rear support plate (707), the front support plate (706) and the rear support plate (707) are fixed in the installation cavity of the front shell (501), a push block (701) is slidably arranged between the front support plate (706) and the rear support plate (707), the upper end of the push block (701) is hinged to the lower end of the lower push rod (113) through a connecting pin (708), and the lower end of the push block (701) is hinged to the upper end of the upper bite claw (702). The front and rear ends of the two groups of jaw connecting rods (703) are hinged together, the lower ends of the two groups of jaw connecting rods (703) are respectively hinged to the upper ends of the two jaws (704), the middle sides of the two jaws (704) are hinged to the front support plate (706) and the rear support plate (707), the support block (705) is located between the two jaws (704), and circular grooves are opened on both sides, and the two sides of the support block (705) are rotatably connected to the rotating shaft hinged to the middle sides of the two jaws (704).

5. The buckle strapping machine head for packaging according to claim 1, characterized in that: The buckle silo unit (4) includes a vertically arranged silo (401), two guard plates (404) are provided at the lower end of the silo (401), a strap conveying channel is connected to the strap channel (306) between the two guard plates (404), the silo (401) is fixed to the front end of the front shell (501) through the silo mounting plates (411) on both sides thereof, a loading port for loading the buckle (405) is provided on one side of the silo (401), a vertical inner cavity for storing the buckle (405) is provided in the silo (401), a sensor (406) for measuring the height of the buckle (405) in the vertical inner cavity is connected to the silo (401), and a detachable cover is provided on the upper part of the silo (401), and a latch (407) can be inserted into the cover and the end The part is located in the pressing block (410), and a coil spring (409) is provided in the pressing block (410). One end of the coil spring (409) is fixedly connected to the pressing block (410), and the other end of the coil spring (409) is connected to the lower end of the silo (401) on the side inside the silo (401). The coil spring (409) always gives the pressing block (410) a downward pulling force. The pressing block (410) is also connected to a handle (408) for manually raising the height of the pressing block (410). A buckle feeding cylinder (402) is fixed to one side of the front shell (501), and the telescopic rod of the buckle feeding cylinder (402) is connected to a connecting rod (412), and the connecting rod (412) is connected to a push piece (403), and the push piece (403) is located in the strap conveying channel and can slide.

6. The buckle strapping machine head for packaging according to claim 5, characterized in that: The latch (407) is a retractable and spring-loaded latch.

7. The buckle strapping machine head for packaging according to claim 2, characterized in that: The belt guide door unit (6) comprises a belt guide door (606), the belt guide door (606) is fixed to one end of a belt guide door rear link (605) and a belt guide door front link (607), a bearing (608) is provided on one side of the other end of the belt guide door front link (607), a bearing seat (609) is also provided next to the belt guide door front link (607), a bolt passes through the bearing seat (609) and the other end of the bolt is connected to the bearing (608) to rotatably connect the bearing seat (609) and the belt guide door front link (607), and the bearing seat (609) The guide door rear connecting rod (605) is fixedly connected to the front housing (501), one side of which is connected to one end of a rotating shaft, a gear (603) is fixed to the rotating shaft, the other end of the rotating shaft is connected to a bearing seat (604), the bearing seat (604) is fixedly connected to the rear housing (502), the telescopic cylinder (601) is fixed to the second mounting position (505), the telescopic shaft of the telescopic cylinder (601) passes through the second mounting position (505) and is fixedly connected to a round bar rack (602), and the round bar rack (602) is meshed with the gear (603).

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