Shearing and jointing mechanism of strapping machine

Abstract

The invention provides a belt shearing and jointing mechanism of a belt bundling machine. The belt shearing and jointing mechanism comprises a seat body, a main shaft mechanism, a teasing needle mechanism, a left pressing knife mechanism, a sliding panel mechanism, a middle pressing knife mechanism, a right pressing knife mechanism, a cutter mechanism and a welding mechanism, before bundling, one end of a plastic bundling belt is pressed between the top of the left pressing part and the bottom of the sliding panel through the left pressing part, and when a whole pile of packaging bags needing to be bundled flow through the upper side of the belt shearing joint mechanism, the plastic bundling belt is released and wound on the whole pile of packaging bags; the tails of the plastic binding belts penetrate through the position between the middle pressing cutter and the right pressing part through the teasing needle and are conveyed to the lower side of the electric ironing head, the plastic binding belts are pressed through the middle pressing cutter and the right pressing part, then the cutter rises to cut off the plastic binding belts, the electric ironing head is driven to be pressed on the plastic binding belts on the upper layer, and therefore the two overlapped layers of plastic binding belts are welded together. The automatic belt shearing and jointing device has the advantages of being compact in structure and small in size, effectively reduces energy consumption of equipment and reduces cost of the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of packaging equipment, in particular to a strap cutting and joining mechanism of a strapping machine. Background Art

[0002] When packaging some products, packaging bags are needed. When the packaging bags leave the factory, a certain number of packaging bags need to be stacked and bundled, and a strapping machine is needed for the strapping operation. In order to complete the cutting and joining operations of the plastic strapping, the strapping machine needs to be equipped with a strap cutting and joining mechanism. The existing strap cutting and joining mechanism is large in size and needs to occupy a large amount of space in the strapping machine, which leads to a large size of the strapping machine. Many cylinders are needed to cooperate with the action, and the equipment consumes a lot of energy and has high equipment cost. Summary of the invention

[0003] The problem to be solved by the present invention is to provide a strap cutting and joining mechanism for a strapping machine, which can reduce the volume, reduce the energy consumption of the equipment and lower the equipment cost.

[0004] To solve the above technical problems, a strap cutting and joining mechanism of a strapping machine provided by the present invention includes a base body, a spindle mechanism, a needle picking mechanism, a left knife pressing mechanism, a sliding plate mechanism, a middle knife pressing mechanism, a right knife pressing mechanism, a knife cutting mechanism, and a welding mechanism; the base body includes a bottom plate and a mounting vertical plate fixedly connected to the bottom plate; the spindle mechanism includes a spindle rotatably connected to the mounting vertical plate, and a driving motor fixedly connected to the bottom plate and drivingly connected to the spindle; the needle picking mechanism includes a first connecting rod, a second connecting rod, a needle picking rod, and a needle picking, the first connecting rod is rotatably connected to the mounting vertical plate, one end of the second connecting rod is hinged to the other end of the first connecting rod, and the other end of the second connecting rod is hinged to the needle picking rod, and the needle picking mounting plate At one end of the needle picking rod, the bottom end of the needle picking rod is rotatably connected to the base plate, and a camshaft is rotatably connected to the mounting plate. A first cam is installed at one end of the camshaft, and a first contact wheel is rotatably connected to the first connecting rod. A first tension spring is connected between the first connecting rod and one side of the mounting plate, and the first contact wheel abuts against the first cam. A first bevel gear is connected to one end of the camshaft, and a second bevel gear meshing with the first bevel gear is installed on the main shaft; the left knife pressing mechanism includes a left knife pressing lifting slider, a first guide rod mounting plate is fixedly connected to the mounting plate, a first longitudinal guide rod is fixedly connected between the first guide rod mounting plate and the base plate, and a first longitudinal guide rod and the left knife pressing lifting slider are connected via The first and second cams are connected by axle sleeves, the first longitudinal guide rod is sleeved with a first return spring abutting between the first guide rod mounting plate and the left knife pressing lifting slider, the left knife pressing lifting slider is provided with a left pressing portion, and one side of the left knife pressing lifting slider is rotatably connected to a second contact wheel, and a second cam abutting against the second contact wheel is installed on the main shaft; the sliding plate mechanism comprises a sliding plate slidably connected to the mounting vertical plate along the thickness direction of the mounting vertical plate, a first rotating seat fixedly connected to the mounting vertical plate, a fork shaft rotatably connected to the first rotating seat, a fork fixedly connected to one end of the fork shaft, a first connecting plate fixedly connected to the other end of the fork shaft, a third contact wheel rotatably connected to one end of the first connecting plate, and a third contact wheel on the main shaft. A third cam is installed, a second tension spring is connected between the first connecting plate and the bottom plate, the third contact wheel abuts against the third cam, a U-shaped groove is provided at one end of the shift fork, and a shift pin located on the U-shaped groove is fixedly connected to one side of the sliding plate; the middle pressure knife mechanism comprises a second rotating seat fixedly connected to the bottom plate, a middle pressure knife lifting slider rotatably connected to the second rotating seat, a middle pressure knife fixedly connected to the middle pressure knife lifting slider, a second connecting plate fixedly connected to the middle pressure knife lifting slider, and a fourth contact wheel rotatably connected to one end of the second connecting plate, a fourth cam is installed on the main shaft, a third tension spring is connected between the middle pressure knife lifting slider and the bottom plate, and the fourth contact wheel abuts against the fourth cam;The right knife pressing mechanism includes a right knife pressing lifting slider, a second guide rod mounting plate is fixedly connected to the mounting vertical plate, a second longitudinal guide rod is fixedly connected between the second guide rod mounting plate and the bottom plate, the second longitudinal guide rod and the right knife pressing lifting slider are connected through a shaft sleeve, a second return spring abutting between the second guide rod mounting plate and the right knife pressing lifting slider is sleeved on the second longitudinal guide rod, a right clamping portion is provided on the right knife pressing lifting slider, a fifth contact wheel is rotatably connected to one side of the right knife pressing lifting slider, and a fifth cam abutting against the fifth contact wheel is installed on the main shaft; the cutter mechanism includes a cutter lifting slider, a cutter fixedly connected to the cutter lifting slider, and a first guide rod is installed A third longitudinal guide rod is fixedly connected between the plate and the bottom plate, the third longitudinal guide rod and the cutter lifting slider are connected through a shaft sleeve, a fourth tension spring is connected between the cutter lifting slider and the bottom plate, a sixth contact wheel is rotatably connected to one side of the cutter lifting slider, and a sixth cam abutting against the sixth contact wheel is installed on the main shaft; the welding mechanism includes a third rotating seat fixedly connected to the bottom plate, a perm swing arm rotatably connected to the third rotating seat, an electric perm head fixedly connected to the perm swing arm, and a seventh contact wheel rotatably connected to the perm swing arm, a seventh cam is installed on the main shaft, a fifth tension spring is connected between the perm swing arm and the bottom plate, and the seventh contact wheel abuts against the seventh cam. ;

[0005] Preferably, a turntable is provided on the main shaft, a sensing plate is fixedly connected to the turntable, and a photoelectric switch cooperating with the sensing plate is fixedly connected to the mounting vertical plate.

[0006] The beneficial effects of the present invention are as follows: the present invention provides a strapping machine's strap cutting and joining mechanism, and when the driving motor is working, the main shaft can be driven to rotate, and the first cam, the second cam, the third cam, the fourth cam, the fifth cam, the sixth cam, and the seventh cam will rotate simultaneously. Before strapping, one end of the plastic strap is transported to the front of the pick-up needle, and the pick-up needle picks up one end of the plastic strap to the top of the left clamping part, and by driving the left clamping part to rise and the sliding panel to move forward, the left clamping part can clamp one end of the plastic strap between the top of the left clamping part and the bottom of the sliding panel. When the whole stack of packaging bags that need to be strapped flows over the upper side of the strap cutting and joining mechanism, the plastic strap will be released and wrapped around the whole stack of packaging bags, and then the tail of the plastic strap is transported to the front of the pick-up needle, and the pick-up needle passes the tail of the plastic strap through between the middle pressure knife and the right clamping part and sends it to the electric On the lower side of the ironing head, the two layers of plastic strapping will overlap, and then the plastic strapping will be compressed by the middle pressure knife and the right pressing part, and then the cutter will rise to cut the plastic strapping, and drive the electric ironing head to press on the upper plastic strapping, so as to melt the overlapping two layers of plastic strapping together, realizing the automated operation of cutting and joining, which has the advantages of compact structure and small size. It only needs to be equipped with one motor, and can drive the picking needle, left pressing part, sliding panel, middle pressure knife, right pressing part, cutter and electric ironing head to move through the main shaft, effectively reducing the energy consumption of the equipment and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 A schematic diagram of the appearance structure of the first viewing angle of the present invention is illustrated.

[0008] Figure 2 A schematic diagram of the appearance structure of the second viewing angle of the present invention is illustrated.

[0009] Figure 3 A front view illustrating the present invention.

[0010] Figure 4 A rear view illustrating the present invention.

[0011] Figure 5 Illustrate the present invention Figure 1 Schematic diagram of the partially enlarged structure of part A in the middle.

[0012] Description of the accompanying drawings: seat body 1, bottom plate 10, mounting plate 11, first guide rod mounting plate 12, first longitudinal guide rod 120, third longitudinal guide rod 121, second guide rod mounting plate 13, second longitudinal guide rod 130, spindle mechanism 2, spindle 20, drive motor 21, turntable 22, induction plate 23, photoelectric switch 24, needle picking mechanism 3, first connecting rod 30, second connecting rod 31, needle picking rod 32, needle picking 33, cam shaft 34, first cam 35, first contact wheel 36, first bevel gear 37, second bevel gear 38, left knife pressing mechanism 4, left knife pressing lifting slider 40, left pressing part 41, second contact wheel 42, second cam 43, sliding panel mechanism 5, sliding panel 50, first rotating seat 51, fork shaft 52, fork 53, U-shaped groove 530, first connecting plate 54, third contact wheel 55, third cam 56, driving pin 57, middle pressure knife mechanism 6, second rotating seat 60, middle pressure knife lifting slider 61, middle pressure knife 62, second connecting plate 63, fourth contact wheel 64, fourth cam 65, right pressure knife mechanism 7, right pressure knife lifting slider 70, right clamping part 71, fifth contact wheel 72, fifth cam 73, cutter mechanism 8, cutter lifting slider 80, cutter 81, sixth contact wheel 82, sixth cam 83, welding mechanism 9, third rotating seat 90, ironing head swing arm 91, electric iron head 92, seventh contact wheel 93, seventh cam 94. DETAILED DESCRIPTION

[0013] To make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments.

[0014] Based on the described embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present disclosure.

[0015] reference Figure 1-Figure 5 .

[0016] The present invention provides a strap cutting and joining mechanism of a strapping machine, comprising a base body 1, a spindle mechanism 2, a needle picking mechanism 3, a left knife pressing mechanism 4, a sliding plate mechanism 5, a middle knife pressing mechanism 6, a right knife pressing mechanism 7, a knife cutting mechanism 8, and a welding mechanism 9; the base body 1 comprises a bottom plate 10, and a mounting vertical plate 11 fixedly connected to the bottom plate 10; the spindle mechanism 2 comprises a spindle 20 rotatably connected to the mounting vertical plate 11, and a driving motor 21 fixedly connected to the bottom plate 10 and drivingly connected to the spindle 20; the needle picking mechanism 3 comprises a first connecting rod 30, a second connecting rod 31, a needle picking rod 32, and a needle picking 33, wherein the first connecting rod 30 is rotatably connected to the mounting vertical plate 11, and one end of the second connecting rod 31 is hinged to the first connecting rod 30. The other end of the second connecting rod 30, the other end of the second connecting rod 31 is hinged on the needle picking rod 32, the needle picking 33 is installed at one end of the needle picking rod 32, the bottom end of the needle picking rod 32 is rotatably connected to the bottom plate 10, the mounting plate 11 is rotatably connected with a camshaft 34, one end of the camshaft 34 is installed with a first cam 35, the first connecting rod 30 is rotatably connected with a first contact wheel 36, a first tension spring is connected between the first connecting rod 30 and one side of the mounting plate 11, the first contact wheel 36 abuts against the first cam 35, one end of the camshaft 34 is connected with a first bevel gear 37, and the main shaft 20 is installed with a second bevel gear 38 meshing with the first bevel gear 37; the left knife pressing mechanism 4 includes a left knife pressing mechanism The lifting slider 40 is fixedly connected to the first guide rod mounting plate 12 on the mounting vertical plate 11, and a first longitudinal guide rod 120 is fixedly connected between the first guide rod mounting plate 12 and the bottom plate 10. The first longitudinal guide rod 120 and the left press knife lifting slider 40 are connected through a shaft sleeve. The first longitudinal guide rod 120 is sleeved with a first return spring abutting between the first guide rod mounting plate 12 and the left press knife lifting slider 40. The left press knife lifting slider 40 is provided with a left clamping portion 41. A second contact wheel 42 is rotatably connected to one side of the left press knife lifting slider 40, and a second cam 43 abutting against the second contact wheel 42 is installed on the main shaft 20; the sliding panel mechanism 5 includes a plurality of cams 43 arranged along the thickness direction of the mounting vertical plate 11. A sliding panel 50 slidably connected to the mounting vertical plate 11, a first rotating seat 51 fixedly connected to the mounting vertical plate 11, a shift fork shaft 52 rotatably connected to the first rotating seat 51, a shift fork 53 fixedly connected to one end of the shift fork shaft 52, a first connecting plate 54 fixedly connected to the other end of the shift fork shaft 52, a third contact wheel 55 rotatably connected to one end of the first connecting plate 54, a third cam 56 is installed on the main shaft 20, a second tension spring is connected between the first connecting plate 54 and the bottom plate 10, the third contact wheel 55 abuts against the third cam 56, a U-shaped groove 530 is provided at one end of the shift fork 53, and a shift pin 57 located on the U-shaped groove 530 is fixedly connected to one side of the sliding panel 50;The middle pressure knife mechanism 6 includes a second rotating seat 60 fixedly connected to the bottom plate 10, a middle pressure knife lifting slider 61 rotatably connected to the second rotating seat 60, a middle pressure knife 62 fixedly connected to the middle pressure knife lifting slider 61, a second connecting plate 63 fixedly connected to the middle pressure knife lifting slider 61, and a fourth contact wheel 64 rotatably connected to one end of the second connecting plate 63. A fourth cam 65 is installed on the main shaft 20. A third tension spring is connected between the middle pressure knife lifting slider 61 and the bottom plate 10. The fourth contact wheel 64 abuts against the fourth cam 65. The right knife pressing mechanism 7 includes a right knife pressing lifting slider 70, a second guide rod mounting plate 13 is fixedly connected to the mounting vertical plate 11, a second longitudinal guide rod 130 is fixedly connected between the second guide rod mounting plate 13 and the bottom plate 10, the second longitudinal guide rod 130 and the right knife pressing lifting slider 70 are connected by a shaft sleeve, the second longitudinal guide rod 130 is sleeved with a second return spring abutting between the second guide rod mounting plate 13 and the right knife pressing lifting slider 70, a right pressing portion 71 is provided on the right knife pressing lifting slider 70, and the right knife pressing lifting slider 70 A fifth contact wheel 72 is rotatably connected to one side, and a fifth cam 73 is installed on the main shaft 20 to abut against the fifth contact wheel 72; the cutter mechanism 8 includes a cutter lifting slider 80, a cutter 81 fixedly connected to the cutter lifting slider 80, a third longitudinal guide rod 121 is fixedly connected between the first guide rod mounting plate 12 and the bottom plate 10, the third longitudinal guide rod 121 and the cutter lifting slider 80 are connected through a shaft sleeve, a fourth tension spring is connected between the cutter lifting slider 80 and the bottom plate 10, and a first cutter lifting slider 80 is rotatably connected to one side. Six contact wheels 82, a sixth cam 83 abutting against the sixth contact wheel 82 is installed on the main shaft 20; the welding mechanism 9 includes a third rotating seat 90 fixedly connected to the bottom plate 10, a perm swing arm 91 rotatably connected to the third rotating seat 90, an electric perm head 92 fixedly connected to the perm swing arm 91, and a seventh contact wheel 93 rotatably connected to the perm swing arm 91, a seventh cam 94 is installed on the main shaft 20, a fifth tension spring is connected between the perm swing arm 91 and the bottom plate 10, and the seventh contact wheel 93 abuts against the seventh cam 94.;

[0017] The working principle is that the plastic strapping material is rolled on the strapping machine, and the plastic strapping is fed to the shearing and joining mechanism through the feeding head. When the driving motor 21 is working, the main shaft 20 can be driven to rotate, and the first cam 35, the second cam 43, the third cam 56, the fourth cam 65, the fifth cam 73, the sixth cam 83, and the seventh cam 94 will rotate simultaneously. Before strapping, one end of the plastic strapping is fed to the front of the picking needle 33 by the feeding head, and when the main shaft 20 rotates, the picking needle 33 can be driven to swing left and right, and the picking needle 33 picks one end of the plastic strapping to the top of the left pressing part 41, and when the main shaft 20 rotates, the left pressing part 41 can be driven to move upward, and the fork 53 will exert force on the shifting pin 57 when it swings, and the sliding panel 50 will move forward, and the left pressing part 41 is driven to rise and the sliding panel 50 moves forward, so that the left pressing part 41 can press one end of the plastic strapping between the top of the left pressing part 41 and the bottom of the sliding panel 50. When a whole stack of packaging bags that need to be bundled flows over the upper side of the shearing tape joint mechanism, the whole stack of packaging bags hits the plastic strap, which will be released and wrapped around the whole stack of packaging bags, and then the tail of the plastic strap is transported to the front of the pick-up needle 33 by the feeding head, and the pick-up needle 33 passes the tail of the plastic strap through between the middle pressing knife 62 and the right pressing part 71 and sends it to the lower side of the electric perm head 92, and the two layers of plastic straps will overlap, and when the main shaft 20 rotates, it can drive the middle pressing knife 62 to descend and the right pressing part 71 to rise, and then the plastic strap passing between the middle pressing knife 62 and the right pressing part 71 is pressed by the middle pressing knife 62 and the right pressing part 71. When the main shaft 20 rotates, the cutter 81 can be driven to rise, so that the cutter 81 rises to cut off the plastic strapping tape. When the main shaft 20 rotates, the electric curling head 92 can be driven to swing downward, and the electric curling head 92 is driven to press on the upper plastic strapping tape, so that the two overlapping plastic strapping tapes are welded together, thereby realizing the automated operation of cutting and joining the straps. The invention has the advantages of compact structure and small size, and only needs to be equipped with one motor, so as to drive the picking needle 33, the left clamping part 41, the sliding panel 50, the middle clamping knife 62, the right clamping part 71, the cutter 81 and the electric curling head 92 to move through the main shaft 20, thereby effectively reducing the energy consumption of the equipment and reducing the equipment cost.

[0018] Based on the above embodiment, a turntable 22 is provided on the spindle 20, a sensing plate 23 is fixedly connected to the turntable 22, and a photoelectric switch 24 cooperating with the sensing plate 23 is fixedly connected to the mounting plate 11, so as to facilitate the judgment of the current angle of the spindle 20 and realize the zero point reset of the spindle 20.

[0019] The above implementation modes are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A strap cutting and joining mechanism for a strapping machine, characterized in that: It comprises a base body, a spindle mechanism, a needle picking mechanism, a left knife pressing mechanism, a sliding plate mechanism, a middle knife pressing mechanism, a right knife pressing mechanism, a cutting mechanism, and a welding mechanism; the base body comprises a base plate and a mounting vertical plate fixedly connected to the base plate; the spindle mechanism comprises a spindle rotatably connected to the mounting vertical plate, and a driving motor fixedly connected to the base plate and drivingly connected to the spindle; the needle picking mechanism comprises a first connecting rod, a second connecting rod, a needle picking rod, and a picking needle, the first connecting rod is rotatably connected to the mounting vertical plate, one end of the second connecting rod is hinged to the other end of the first connecting rod, the other end of the second connecting rod is hinged to the needle picking rod, the picking needle is mounted at one end of the needle picking rod, and the bottom end of the needle picking rod is rotatably connected to the base The first gear is connected with the gear of the first transmission gear, and the second gear is connected with the gear of the first transmission gear to the first gear of the first transmission gear. The cam is provided on the main shaft and is connected with the second contact wheel to contact the second contact wheel; the sliding plate mechanism comprises a sliding plate connected to the mounting vertical plate in a sliding manner along the thickness direction of the mounting vertical plate, a first rotating seat fixedly connected to the mounting vertical plate, a fork shaft rotatably connected to the first rotating seat, a fork fixedly connected to one end of the fork shaft, a first connecting plate fixedly connected to the other end of the fork shaft, and a third contact wheel rotatably connected to one end of the first connecting plate; a third cam is installed on the main shaft, and the A second tension spring is connected between the first connecting plate and the bottom plate, and the third contact wheel abuts against the third cam, one end of the shift fork is provided with a U-shaped groove, and one side of the sliding plate is fixedly connected to a shift pin located on the U-shaped groove; the middle pressure knife mechanism comprises a second rotating seat fixedly connected to the bottom plate, a middle pressure knife lifting slider rotatably connected to the second rotating seat, a middle pressure knife fixedly connected to the middle pressure knife lifting slider, a second connecting plate fixedly connected to the middle pressure knife lifting slider, and a fourth contact wheel rotatably connected to one end of the second connecting plate. A fourth cam is installed on the main shaft, and a third tension spring is connected between the middle pressure knife lifting slider and the bottom plate, and the fourth contact wheel abuts against the fourth cam;The right knife pressing mechanism comprises a right knife pressing lifting slide block, the mounting vertical plate is fixedly connected to a second guide rod mounting plate, the second guide rod mounting plate and the bottom plate are fixedly connected to a second longitudinal guide rod, the second longitudinal guide rod and the right knife pressing lifting slide block are connected via a shaft sleeve, the second longitudinal guide rod is sleeved with a second return spring abutting between the second guide rod mounting plate and the right knife pressing lifting slide block, the right knife pressing lifting slide block is provided with a right pressing portion, one side of the right knife pressing lifting slide block is rotatably connected to a fifth contact wheel, and a fifth cam abutting against the fifth contact wheel is installed on the main shaft; the cutter mechanism comprises a cutter lifting slide block, a cutter fixedly connected to the cutter lifting slide block, the first guide rod mounting plate and A third longitudinal guide rod is fixedly connected between the bottom plates, the third longitudinal guide rod and the cutter lifting slider are connected via a shaft sleeve, a fourth tension spring is connected between the cutter lifting slider and the bottom plate, a sixth contact wheel is rotatably connected to one side of the cutter lifting slider, and a sixth cam abutting against the sixth contact wheel is installed on the main shaft; the welding mechanism comprises a third rotating seat fixedly connected to the bottom plate, a perm swing arm rotatably connected to the third rotating seat, an electric perm head fixedly connected to the perm swing arm, and a seventh contact wheel rotatably connected to the perm swing arm, a seventh cam is installed on the main shaft, a fifth tension spring is connected between the perm swing arm and the bottom plate, and the seventh contact wheel abuts against the seventh cam. ; 2. A strap cutting and joining mechanism for a strapping machine according to claim 1, characterized in that: A turntable is arranged on the main shaft, a sensing plate is fixedly connected to the turntable, and a photoelectric switch cooperating with the sensing plate is fixedly connected to the mounting vertical plate.

Images