A packaging machine

Abstract

The present application relates to a baling machine, comprising a machine base and a tightening mechanism and a welding and cutting mechanism arranged on the machine base. The tightening mechanism is used to tighten the annular strapping strap. The tightening mechanism comprises a tightening wheel, a tightening plate, a first driving member, and a second driving member. The first driving member drives the tightening wheel to move on the machine base, and the second driving member drives the tightening wheel to rotate. The tightening wheel and the tightening plate are respectively located on both sides of the thickness direction of the strapping strap and are used to clamp the strapping strap together. The application also includes a baffle, a push plate, and a third driving member. The baffle is arranged on the machine base. The push plate is connected to the machine base by sliding from a side close to the baffle to a side away from the baffle. The third driving member drives the push plate to slide. The baffle and the push plate are respectively located on both sides of the width direction of the strapping strap. The push plate is used to push the strapping strap against the baffle. The baffle and the push plate jointly limit the strapping strap to only along the length direction, thereby increasing the contact area of ​​the two ends of the annular strapping strap, thereby improving the strength of the weld after the strapping strap is welded.

Description

Technical Field

[0001] The present invention relates to the field of packaging equipment, in particular to a packaging machine. Background Art

[0002] A baler, also known as a strapping machine, banding machine, or strapping machine, uses strapping tape to bundle products or packages, then tightens and fuses the ends together using a heat-heating iron. Currently, commercially available strapping machines typically complete the package by tightening the strapping loop around the packaged item and permanently joining the overlapping first sections of the straps together using friction welding.

[0003] The invention patent with announcement number CN106742437B discloses a handheld electric baler, including a belt pressing structure, a vibrating component, a cutter, and a belt pressing pad matching the belt pressing structure. The belt pressing structure is connected to the vibrating component or is a part of it, and is characterized in that the vibrating component is a swinging vibrating component that can be raised and lowered. The handheld electric baler is provided with a pressing mechanism and an ascending and resetting mechanism of the vibrating component. The swinging direction of the vibrating component is left and right swing relative to the length direction of the strapping belt. The handheld electric baler is provided with a left and right swinging drive device for the vibrating component; the handheld electric baler is also provided with a manual pressing operation mechanism with a lock, so that when the vibrating component is pressed down to the belt pressing position of the belt pressing structure, the pressing operation mechanism is locked, and the pressing operation mechanism cannot be retracted after the manual pressure is removed.

[0004] The above-mentioned related technical solutions have the following defects: the strapping is stacked between the bottom end of the vibrating component and the pressure pad, and then the strapping is tightened. When the vibrating component presses the strapping to vibrate, the position of the stacked strapping is easily misaligned, which will affect the strength of the weld after the strapping is welded. Summary of the Invention

[0005] In order to improve the strength of the welded joints of the strapping tape, the present application provides a baling machine.

[0006] The present application provides a baler that adopts the following technical solution:

[0007] A baler comprises a machine base and a tightening mechanism and a welding and cutting mechanism arranged on the machine base, the tightening mechanism is used to tighten the annular strapping belt, the welding and cutting mechanism is used to weld the strapping belts stacked together and cut off the excess strapping belt, the tightening mechanism comprises a tightening wheel, a tightening plate, a first driving member and a second driving member, the tightening plate is fixed to the machine base, the tightening wheel is movably connected to the machine base along a side away from the tightening plate to a side close to the tightening plate, the first driving member drives the tightening wheel to move on the machine base, and the second driving member drives the tightening wheel to rotate, the tightening wheel and the tightening plate are respectively located on both sides in the thickness direction of the strapping belt and are used to clamp the strapping belt together;

[0008] The cam is provided on the machine base, and the push plate is connected to the machine base by sliding from the side close to the cam to the side away from the cam. The third drive member drives the push plate to slide. The cam and the push plate are respectively located on both sides of the width direction of the strapping belt, and the push plate is used to push the strapping belt against the cam.

[0009] By adopting the above technical solution, before the tightening wheel presses the strapping belt onto the tightening plate, the push plate is driven to make the strapping belt contact the baffle, and the baffle and the push plate jointly limit the strapping belt to move only along the length direction, that is, the tightening direction, so that the two ends of the ring-shaped strapping belt can overlap better. When the welding and cutting mechanism performs friction heat melting and docking operation on the strapping belt, the two ends of the ring-shaped strapping belt will always overlap together, and by increasing the contact area of ​​the two ends of the ring-shaped strapping belt, the strength of the weld after the strapping belt is welded is improved.

[0010] Preferably, the first driving member includes a reduction gear, a rotating shaft and a handle, the second driving member includes a reduction gear and a first motor, the reduction gear in the first driving member and the reduction gear in the second driving member are the same reduction gear, the reduction gear includes a housing, an input shaft, an output shaft and a reduction transmission mechanism, the input shaft and the output shaft are both rotatably connected to the housing, the reduction transmission mechanism is used to reduce the speed of the input shaft and transmit it to the output shaft, the handle is arranged on the housing, the rotating shaft is passed through and rotatably connected to the housing of the reduction gear, the rotating shaft is rotatably connected to the machine base, the first motor is arranged on the housing and coaxially fixed to the input shaft of the reduction gear, the tightening wheel is coaxially fixed to the output shaft of the reduction gear, and the axial direction of the rotating shaft is parallel to the rotational axis direction of the tightening wheel.

[0011] By adopting the above technical solution, the first motor can drive the tightening wheel to rotate through the reduction gear box. The operator applies force on the handle to drive the reduction gear box to rotate around the rotating shaft, and then drives the tightening wheel to move. When the tightening wheel rotates toward the side away from the tightening plate, the annular strap can enter between the tightening wheel and the tightening plate. Then the tightening wheel is rotated toward the side away from the tightening plate, so that the tightening wheel abuts against the tightening plate. Then the rotation of the tightening wheel drives the annular strap to tighten.

[0012] Preferably, the first driving member also includes a torsion spring, a first spring and two first protrusions. The torsion spring is arranged on the rotating shaft and always drives the rotating shaft to rotate toward the side of the tightening wheel close to the tightening plate. The two first protrusions are respectively arranged on the machine base and the box body. The first protrusion arranged on the machine base is located on the side of the first protrusion arranged on the box body close to the tightening wheel. The two ends of the first spring are respectively hooked on the two first protrusions, and the first spring is always in a stretched state.

[0013] By adopting the above technical solution, the torsion spring can drive the tensioning wheel to always rotate toward the tensioning plate until it abuts against the tensioning plate. The first spring is in a stretched state and can also drive the gear box to rotate toward the tensioning plate. When the strapping belt is placed between the tensioning wheel and the tensioning plate, the tensioning wheel and the tensioning plate can always keep clamping the strapping belt. The operator does not need to use the control handle to make the tensioning wheel press the tensioning plate all the time, which makes it convenient to tighten the strapping belt.

[0014] Preferably, the third driving member includes a movable block, an abutting block, a second spring, and a first rod, wherein the second spring is provided on the push plate and the base to drive the push plate to always move toward one side of the retaining frame;

[0015] The movable block is slidably connected to the machine base along a direction perpendicular to the rotation axis of the rotating shaft, and a first sliding groove is provided on the movable block in a direction parallel to the tightening direction of the strapping belt. The first rod is fixed to the box body, and the first rod is movably connected to the first sliding groove along the length direction of the first sliding groove. The first rod is located on a side of the rotating shaft close to the output shaft of the reduction gearbox;

[0016] The abutment block is arranged on the outer side wall of the movable block, and the push plate is detachably connected to the force block. An inclined surface is provided on the top surface of the abutment block, and the distance between the inclined surface and the push frame gradually increases from the end close to the first rod to the end away from the first rod, and the force block always abuts against the inclined surface.

[0017] By adopting the above technical solution, when the operator controls the handle to move the tightening wheel toward the side away from the tightening plate, the first rod will drive the abutment block to move toward the side away from the tightening plate, and the inclined surface of the abutment block will abut on the force-bearing block, which can drive the force-bearing block to move toward the side away from the baffle, thereby driving the push plate away from the baffle, which can facilitate the operator to put the strapping belt between the tightening wheel and the tightening plate.

[0018] Preferably, the first rod is located on a side of the reduction gear output shaft away from the tightening plate, the first rod is located on a side of the reduction gear output shaft away from the rotating shaft, the block frame is slidably connected to the machine base along a sliding direction parallel to the sliding direction of the movable block, the block frame is provided with a second slide slot along a length direction parallel to the first slide slot, the first rod is movably connected in the second slide slot along the length direction of the second slide slot, so that one end of the tensioning wheel abuts the strap is the abutting end, and the end of the block frame for the strap to abut is the limiting end. When the tensioning wheel and the tensioning plate clamp the strap, the limiting end is located on the side of the abutting end away from the tightening plate, and when the tensioning wheel moves to a certain gap with the tensioning plate for the strap to be placed, the limiting end is located on the side of the abutting end close to the tightening plate.

[0019] By adopting the above technical solution, the distance between the axis of the rotating shaft and the axis of the output shaft of the reduction gearbox is L1, and the distance between the axis of the rotating shaft and the axis of the first rod is L2. When L2 is greater than L1, the reduction gearbox rotates around the rotating shaft by the same angle, and the height position change of the first rod in the vertical direction will be greater than the height position change of the output shaft of the reduction gearbox in the vertical direction, thereby forming a speed difference between the movement of the retaining frame and the movement of the tightening wheel, so that when the tightening wheel and the tightening plate clamp the strap, the bottom end of the retaining frame is located below the tightening wheel to limit the strap, and when the tightening wheel releases the strap, the bottom end of the retaining frame is located above the tightening wheel, which does not affect the placement and removal of the strap.

[0020] Preferably, it also includes a second rod and a slider, the second rod is fixed on the first rod and the slider, a certain distance is left between the first rod and the slider, the slider is located on the side of the reducer output shaft away from the tightening plate, the slider is located on the side of the first rod close to the reducer output shaft, the slider is located on the side of the reducer output shaft away from the tightening plate, the slider is located on the side of the reducer output shaft away from the rotating shaft, and the slider is movably connected in the second slide groove along the length direction of the second slide groove.

[0021] Preferably, the welding and cutting mechanism includes welding upper teeth, welding lower teeth, a welding frame, a driving mechanism and a welding state conversion mechanism, the welding lower teeth are arranged on the machine base, the welding frame is provided with a first positioning groove, the welding upper teeth are slidably connected in the first positioning groove, the driving mechanism drives the welding upper teeth to slide back and forth in the first positioning groove, the welding frame is movably connected to the machine base, and the welding state conversion mechanism is used to drive the welding frame to move on the machine base and switch the welding upper teeth between a welding position close to the welding lower teeth and a rest position away from the welding lower teeth.

[0022] By adopting the above technical solution, the overlapping first parts of the strapping tape are permanently connected by heat-melting the strapping tape when the upper welding teeth generate heat through friction with the strapping tape, thereby completing the packaging.

[0023] Preferably, a plurality of ball grooves are provided on the top wall of the welding upper tooth in a direction parallel to the sliding direction of the welding upper tooth, and balls are movable in the ball grooves. The top ends of the balls extend out of the ball grooves and abut against the top wall of the first positioning groove. A first gap is left between the welding upper tooth and the top wall of the first positioning groove, and a second gap is left between the side walls of the welding upper tooth and the inner walls of the first positioning groove.

[0024] By adopting the above technical solution, the setting of the first gap and the ball can reduce the contact area between the welding upper teeth and the first positioning groove, can reduce the wear between the welding upper teeth and the inner wall of the first positioning groove, and extend the service life of the welding frame; in the process of the welding upper teeth pressing the strapping tape and sliding, the surface of the welding upper teeth in contact with the strapping tape will have a certain degree of wear, and the setting of the second gap can enable the welding upper teeth to rotate in a small range and self-adapt in the process of the welding upper teeth pressing the strapping tape and sliding, so that the welding upper teeth can be pressed more closely on the strapping tape, thereby improving the welding effect.

[0025] The technical effects of the present invention are mainly reflected in the following aspects:

[0026] 1. The present invention provides a retaining frame and a push plate, which together restrict the strapping belt to move only in the length direction, that is, the tightening direction, so that the two ends of the ring-shaped strapping belt can be better overlapped. By increasing the contact area between the two ends of the ring-shaped strapping belt, the strength of the welded joint of the strapping belt is improved.

[0027] 2. The present invention provides an abutment block and a force-bearing block. When the operator controls the handle to move the tensioning wheel toward the side away from the tensioning plate, the first rod drives the abutment block to move toward the side away from the tensioning plate. The inclined surface of the abutment block abuts against the force-bearing block, which can drive the force-bearing block to move toward the side away from the stop frame, thereby driving the push plate away from the stop frame, making it convenient for the operator to place the strapping belt between the tensioning wheel and the tensioning plate.

[0028] 3. The present invention sets the distance L1 between the axis of the rotating shaft and the axis of the output shaft of the reduction gearbox to be smaller than the distance L2 between the axis of the rotating shaft and the axis of the first rod. When the reduction gearbox rotates around the rotating shaft by the same angle, the height position change of the first rod in the vertical direction will be greater than the height position change of the output shaft of the reduction gearbox in the vertical direction, thereby forming a speed difference between the movement of the retaining frame and the movement of the tightening wheel. As a result, when the tightening wheel and the tightening plate clamp the strap, the bottom end of the retaining frame is located below the tightening wheel to limit the strap. When the tightening wheel releases the strap, the bottom end of the retaining frame is located above the tightening wheel, which does not affect the placement and removal of the strap. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0030] Figure 2 It is a schematic diagram of the overall structure of the tightening mechanism of the embodiment of the present application.

[0031] Figure 3 It is a structural schematic diagram of the reduction transmission mechanism of an embodiment of the present application.

[0032] Figure 4 It is a structural schematic diagram of the force-bearing block and the abutment block in an embodiment of the present application.

[0033] Figure 5 It is a structural diagram of the welding and cutting mechanism of an embodiment of the present application.

[0034] Figure 6 It is along Figure 5 Sectional view along line AA.

[0035] Figure 7 It is a structural schematic diagram of the embodiment of the present application in which the resisting block and the pressing block limit the first seat.

[0036] Explanation of reference numerals: 1. Welding and cutting mechanism; 11. Welding upper teeth; 12. Welding lower teeth; 121. Ball groove; 122. Ball; 13. Welding frame; 131. First positioning groove; 132. Second positioning groove; 133. Cutting knife; 14. First gap; 15. Second gap; 16. Hidden groove; 2. Driving mechanism; 21. Eccentric wheel; 22. Second motor; 23. Connecting rod; 3. Welding state Conversion mechanism; 31. Rocker; 311. Arc groove; 32. Pressing member; 321. First seat; 3211. Arc surface; 3212. Recessed area; 322. Third spring; 323. Pressing block; 324. Stop block; 325. Ring; 326. Fourth spring; 33. Lifting member; 331. Tension spring; 332. Second boss; 34. Handle; 4. Tightening mechanism; 41. Tightening wheel; 41. 1. Auxiliary shaft; 412. Abutment end; 42. Tightening plate; 43. Stop frame; 431. Second through slot; 432. Limiting end; 44. Push plate; 441. Guide rod; 45. Force block; 5. First driving member; 52. Rotating shaft; 53. Handle; 54. Torsion spring; 55. First spring; 56. First protrusion; 57. Second driving member; 571. First motor; 6. Reducer; 61. Housing; 62. Input shaft; 63. Output shaft; 64. Reduction transmission mechanism; 65. Gear; 66. Turbine; 67. Turbine; 7. Third driving member; 71. Movable block; 711. First slide slot; 72. Abutment block; 721. Inclined surface; 73. First rod; 731. Second rod; 732. Slider; 74. Second spring; 8. Machine base; 81. Arc through slot; 82. Normally open switch; 83. Normally closed switch DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-7The present application is further described in detail to make the technical solution of the present application easier to understand and grasp.

[0038] An embodiment of the present application discloses a packaging machine.

[0039] Reference Figure 1-Figure 4 A baling machine of this embodiment includes a machine base 8 and a tightening mechanism 4 and a welding and cutting mechanism 1 arranged on the machine base 8. The tightening mechanism 4 is used to tighten the annular strapping belt, and the welding and cutting mechanism 1 is used to weld the strapping belts stacked together and cut off the excess strapping belts.

[0040] Reference Figure 1-Figure 4 The tightening mechanism 4 includes a tightening wheel 41, a tightening plate 42, a first driving member 5, and a second driving member 57. The tightening plate 42 is fixed to the machine base 8. The tightening wheel 41 is movably connected to the machine base 8 from a side away from the tightening plate 42 to a side close to the tightening plate 42. The first driving member 5 drives the tightening wheel 41 to move on the machine base 8. The second driving member 57 drives the tightening wheel 41 to rotate. The tightening wheel 41 and the tightening plate 42 are respectively located on both sides of the strapping strap in the thickness direction and are used to clamp the strapping strap together.

[0041] Reference Figure 1-Figure 4 The first drive member 5 includes a reduction gearbox 6, a rotating shaft 52, and a handle. The second drive member 57 includes a reduction gearbox 6 and a first motor 571. The reduction gearbox 6 in the first drive member 5 and the reduction gearbox 6 in the second drive member 57 are the same reduction gearbox 6. The reduction gearbox 6 includes a housing 61, an input shaft 62, an output shaft 63, and a reduction transmission mechanism 64. The input shaft 62 and the output shaft 63 are both rotatably connected to the housing 61. The reduction transmission mechanism 64 is used to reduce the speed of the input shaft 62 and transmit it to the output shaft 63. The rotating shaft 52 passes through and is rotatably connected to the housing 61 of the reduction gearbox 6. The rotating shaft 52 is rotatably connected to the base 8. The handle is fixed to the housing 61 to drive the housing 61 to rotate about the rotating shaft 52. The first motor 571 is fixed on the box body 61 and coaxially fixed on the input shaft 62 of the tightening wheel 6. An auxiliary shaft 411 is coaxially fixed on the tightening wheel 41. The diameter of the auxiliary shaft 411 is smaller than the diameter of the tightening wheel 41. The auxiliary shaft 411 is coaxially fixed on the output shaft 63 of the reducer 6. An arc-shaped through groove 81 for the auxiliary shaft 411 to move is provided on the machine base 8. The reducer 6 and the tightening wheel 41 are respectively located on both sides of the arc-shaped through groove 81. The auxiliary shaft 411 is passed through and movably connected in the arc-shaped through groove 81 with the rotating shaft 52 as the axis. The axial direction of the rotating shaft 52 is parallel to the rotation axis direction of the tightening wheel 41.

[0042] Reference Figure 1-Figure 4The following embodiments of this application are based on the normal use of the baler. The base 8 is typically placed on a nearly horizontal surface. The tensioning wheel 41 and tensioning plate 42 are located above and below the clamped strap, respectively, to tighten the strap. The rotation axis of the tensioning wheel 41 is parallel to the plane of the mounting surface. The tightening direction of the strap is perpendicular to the rotation axis of the tensioning wheel 41 and is also nearly parallel to the plane of the mounting surface.

[0043] Reference Figure 1-Figure 4 The first motor 571 can drive the tightening wheel 41 to rotate through the reduction gear box 6. The operator applies force on the handle 53 to drive the reduction gear box 6 to rotate around the rotating shaft 52, and then drives the tightening wheel 41 to move. When the tightening wheel 41 rotates toward the side away from the tightening plate 42, the annular strapping belt can enter between the tightening wheel 41 and the tightening plate 42. Then the tightening wheel 41 is rotated toward the side away from the tightening plate 42, so that the tightening wheel 41 abuts against the tightening plate 42, and then the tightening wheel 41 rotates to tighten the annular strapping belt.

[0044] Reference Figure 1-Figure 4 The reduction transmission mechanism 64 includes a plurality of gears 65 of different diameters, a worm 66, and a turbine 67. The plurality of gears 65 of different diameters are combined and meshed. The input shaft 62 of the reduction box 6 is coaxially fixedly connected to the small-diameter gear 65 at the initial transmission position. The worm 66 is coaxially fixedly connected to the large-diameter gear 65 at the terminal position. The turbine 67 is located below the worm 66 and meshedly connected to the first turbine 67. The output shaft 63 of the reduction box 6 is coaxially fixedly connected to the turbine 67. The turbine 67 can be a specially structured helical tooth. By setting up the worm 66 and turbine 67 of the upper and lower structures, the replacement and installation of the worm 66 and turbine 67 can be facilitated, while reducing the thickness of the housing 61 and increasing the compactness of the baler.

[0045] Reference Figure 1-Figure 4 The first driving member 5 also includes a torsion spring 54, a first spring 55 and two first protrusions 56. The torsion spring 54 is installed on the rotating shaft 52 and always drives the rotating shaft 52 to rotate toward the side of the tightening wheel 41 close to the tightening plate 42. The two first protrusions 56 are respectively fixed on the machine base 8 and the box body 61. The first protrusion 56 provided on the machine base 8 is located above the first protrusion 56 provided on the box body 61. The two ends of the first spring 55 are respectively bent into a hook shape and hooked on the two first protrusions 56. The first spring 55 is always in a stretched state.

[0046] Reference Figure 1-Figure 4The torsion spring 54 can drive the tensioning wheel 41 to always rotate toward the tensioning plate 42 until it abuts against the tensioning plate 42. The first spring 55 is in a stretched state and can also drive the gear box 65 to rotate toward the tensioning plate 42. When the strapping tape is placed between the tensioning wheel 41 and the tensioning plate 42, the tensioning wheel 41 and the tensioning plate 42 can always keep the tensioning tape clamped. The operator does not need to use the control handle 53 to make the tensioning wheel 41 press the tensioning plate 42, which makes it convenient to tighten the strapping tape.

[0047] Reference Figure 1-Figure 4 The tightening mechanism 4 further includes a retaining frame 43, a push plate 44, and a third driving member 7. To facilitate the insertion of the annular strapping tape between the tightening wheel 41 and the tightening plate 42 from the side, the retaining frame 43 is slidably connected to the machine base 8 along an axis perpendicular to the rotating shaft 52 and in the tightening direction of the strapping tape. To limit the position of the strapping tape between the tightening wheel 41 and the tightening plate 42, the push plate 44 is slidably connected to the machine base 8 along an axis parallel to the rotating shaft 52. The retaining frame 43 and the push plate 44 are respectively located on either side of the strapping tape in the width direction. The push plate 44 is used to push the strapping tape against the retaining frame 43.

[0048] Reference Figure 1-Figure 4 Before the tightening wheel 41 presses the strapping belt onto the tightening plate 42, the push plate 44 is driven to make the strapping belt contact the baffle 43. The baffle 43 and the push plate 44 jointly limit the strapping belt to move only along the length direction, that is, the tightening direction, so that the two ends of the ring strapping belt can overlap better. When the welding and cutting mechanism 1 performs the friction heat melting and docking operation on the strapping belt, the two ends of the ring strapping belt will always overlap together. By increasing the contact area of ​​the two ends of the ring strapping belt, the strength of the weld after the strapping belt is welded is improved.

[0049] Reference Figure 1-Figure 4 The third driving member 7 includes a movable block 71, an abutting block 72, a first rod 73, and two second springs 74. The movable block 71 is slidably connected to the base 8 along a sliding direction parallel to the sliding direction of the retaining frame 43. The first rod 73 is fixed to the housing 61 of the reduction gearbox 6. The length of the first rod 73 is parallel to the axial direction of the rotating shaft 52. One end of the first rod 73 extends out of the housing 61 toward one end of the tensioning wheel 41. The first rod 73 is located on one side of the rotating shaft 52 of the tensioning wheel 41 and above the tensioning wheel 41 and the base 8. A first sliding groove 711 is defined at the top of the movable block 71 along a direction parallel to the tightening direction of the strapping strap. The first rod 73 passes through and is movably connected to the first sliding groove 711 along its length.

[0050] Reference Figure 1-Figure 4The push plate 44 is located on the side of the arcuate slot 81 closest to the take-up wheel 41. Two guide rods 441 are fixed to the push plate 44. One end of the guide rod 441 is fixed to the push plate 44. The guide rod 441 passes through the push plate 44 and is slidably connected to the base 8 in a direction parallel to the sliding direction of the push plate 44. The push plate 44 is slidably connected to the base 8 via the two guide rods 441. The two guide rods 441 are arranged sequentially along the tightening direction of the strapping. The end of the guide rod 441 away from the push plate 44 is located on the side of the arcuate slot 81 away from the take-up wheel 41. The two guide rods 441 are located on either side of the movable block 71 and serve to limit the sliding movement of the movable block 71.

[0051] Reference Figure 1-Figure 4 The end of the guide rod 441 away from the push plate 44 is detachably provided with a force block 45. The two guide rods 441 are fixed to the same force block 45. The guide rods 441 penetrate the force block 45. A clamp or fan-shaped block is installed on the end of the guide rod 441 extending out of the force block 45 to prevent the force block 45 from moving away from the push plate 44. The bottom end of the movable block 71 is fixed with an abutment block 72. The top surface of the abutment block 72 is provided with an inclined surface 721. The distance from the top to the bottom of the inclined surface 721 to the push plate 44 gradually increases. Two second springs 74 are respectively mounted on the two guide rods 441. The second springs 74 are located on the side of the arc-shaped through slot 81 close to the take-up wheel 41. The two ends of the second springs 74 respectively abut the machine base 8 and the push plate 44. The second springs 74 are always in a compressed state. The force-bearing block 45 is semi-cylindrical in shape and is located above the abutting block 72 . The arc surface of the force-bearing block 45 always abuts against the inclined surface 721 .

[0052] Reference Figure 1-Figure 4 When the operator controls the handle 53 to move the tightening wheel 41 toward the side away from the tightening plate 42, the first rod 73 will drive the abutment block 72 to move toward the side away from the tightening plate 42. The inclined surface 721 of the abutment block 72 abuts on the force-bearing block 45, which can drive the force-bearing block 45 to move toward the side away from the baffle 43, thereby driving the push plate 44 away from the baffle 43, which can facilitate the operator to put the strapping belt between the tightening wheel 41 and the tightening plate 42.

[0053] Reference Figure 1-Figure 4A second slot is defined at the top of the retaining frame 43 along a lengthwise direction parallel to the first slot 711. A second rod 731 is fixed to the end of the first rod 73 extending out of the first slot 711. One end of the second rod 731 is fixed to the end of the first rod 73, and a slider 732 is fixed to the other end of the second rod 731. The lengthwise direction of the second rod 731 is perpendicular to the lengthwise direction of the first rod 73. When the tensioning wheel 41 rotates until it abuts the tensioning plate 42, the height of the slider 732 is positioned between the height of the first rod 73 and the height of the auxiliary shaft 411. The slider 732 is also positioned on the side of the auxiliary shaft 411 away from the rotating shaft 52. The slider 732 is formed by the end of a bolt screwed onto the first rod 73. The axial direction of the slider 732 is parallel to the axial direction of the rotating shaft 52. The slider 732 passes through the second slot and is slidably connected to the second slot along the lengthwise direction.

[0054] Reference Figure 1-Figure 4 , let the end of the tightening wheel 41 that abuts the strapping belt be the abutting end 412, and let the bottom end of the blocking frame 43 be the limiting end 432. When the tightening wheel 41 and the tightening plate 42 clamp the strapping belt, the limiting end 432 is located below the abutting end 412. When the tightening wheel 41 moves to a certain gap with the tightening plate 42 for the strapping belt to be placed, the limiting end 432 is located above the abutting end 412.

[0055] Reference Figure 1-Figure 4 , let the distance between the axis of the rotating shaft 52 and the axis of the output shaft 63 of the reduction gear 6 be L1, and let the distance between the axis of the rotating shaft 52 and the axis of the slider 732 be L2. When L2 is greater than L1, the reduction gear 6 rotates around the rotating shaft 52 by the same angle, and the height position change of the first rod 73 in the vertical direction will be greater than the height position change of the output shaft 63 of the reduction gear 6 in the vertical direction, so that a speed difference is formed between the movement of the retaining frame 43 and the movement of the tensioning wheel 41, so that when the tensioning wheel 41 and the tensioning plate 42 clamp the strap, the bottom end of the retaining frame 43 is located below the tensioning wheel 41 to limit the strap, and when the tensioning wheel 41 loosens the strap, the bottom end of the retaining frame 43 is located above the tensioning wheel 41, which does not affect the placement and removal of the strap.

[0056] Reference Figure 1-Figure 4 The blocking frame 43 is arranged in an irregular shape. The blocking frame 43 is forked from the top to the bottom to form three blocking feet. The three blocking feet are distributed in sequence along the tightening direction of the strapping belt. The blocking feet at both ends are respectively located on both sides of the machine base 8. When the tightening wheel 41 and the tightening plate 42 clamp the strapping belt, the bottom end of the blocking foot is located below the upper bottom surface of the machine base 8, which can be used for strapping belts at different positions to abut.

[0057] Reference Figure 1-Figure 4A normally closed switch 83 is fixed to the base 8 and is located below the second rod 731. When the tensioning wheel 41 and the tensioning plate 42 clamp the strapping tape, the second rod 731 abuts against the normally closed switch 83, and the normally closed switch 83 can control the activation of the tensioning wheel 41. When the second rod 731 does not abut against the normally open switch 82, the tensioning wheel 41 cannot rotate.

[0058] Reference Figure 5-Figure 7 The welding and cutting mechanism 1 is used to weld the stacked strapping tapes and cut off the excess strapping tapes. The welding and cutting mechanism 1 includes an upper welding tooth 11, a lower welding tooth 12, a welding frame 13, a driving mechanism 2, and a welding state conversion mechanism 3. The lower welding tooth 12 is fixed to the machine base 8. The welding frame 13 is movably connected to the machine base 8 and is located above the lower welding tooth 12. A first positioning groove 131 is provided on the bottom surface of the welding frame 13. The upper welding tooth 11 is slidably connected in the first positioning groove 131. The driving mechanism 2 drives the upper welding tooth 11 to slide back and forth in the first positioning groove 131. The welding state conversion mechanism 3 is used to drive the welding frame 13 to move on the machine base 8 and switch the upper welding tooth 11 between a welding position close to the lower welding tooth 12 and a rest position away from the lower welding tooth 12.

[0059] Reference Figure 5-Figure 7 The overlapping portion of the strapping tape is placed between the upper welding teeth 11 and the lower welding teeth 12. The welding state conversion mechanism 3 drives the welding frame 13 to move to the welding position. When the upper welding teeth 11 are in the welding position, the sliding direction of the upper welding teeth 11 is parallel to the width direction of the strapping tape. The upper welding teeth 11 press the strapping tape against the lower welding teeth 12. Then, the driving mechanism 2 continuously drives the upper welding teeth 11 to slide back and forth. Friction occurs between the upper welding teeth 11 and the strapping tape. The frictional heat causes the overlapping strapping tape to melt and fix together.

[0060] Reference Figure 5-Figure 7 Two ball grooves 121 are defined on the top wall of the welded upper tooth 11. These grooves 121 are arranged in sequence along the sliding direction of the welded upper tooth 11 within the first positioning groove 131. A ball 122 moves within the grooves 121, with more than half of the ball 122 located within the grooves 121 and the top end of the ball 122 extending beyond the grooves 121. A second positioning groove 132 is defined on the top wall of the first positioning groove 131, parallel to the sliding direction of the welded upper tooth 11. The top end of the ball 122 extends beyond the groove 121 and abuts against the inner wall of the second positioning groove 132. The ball 122 is movably connected within the second positioning groove 132 along its length. A first gap 14 is provided between the top wall of the welded upper tooth 11 and the top wall of the first positioning groove 131. A second gap 15 is provided between the side walls of the welded upper tooth 11 and the inner walls of the first positioning groove 131.

[0061] Reference Figure 5-Figure 7When the driving mechanism 2 drives the welding lower tooth 12 to slide back and forth in the first positioning groove 131, the ball 122 slides against the top wall of the first positioning groove 131, so that the top wall of the welding upper tooth 11 will not contact the top wall of the first positioning groove 131, which can reduce the contact area between the welding upper tooth 11 and the first positioning groove 131, and can reduce the wear between the welding upper tooth 11 and the inner wall of the first positioning groove 131, thereby extending the service life of the welding frame 13.

[0062] Reference Figure 5-Figure 7 In the process of sliding the upper welding teeth 11 against the strapping tape, the surface of the upper welding teeth 11 in contact with the strapping tape will be worn to a certain extent. The setting of the second gap 15 enables the upper welding teeth 11 to rotate in a small range and self-adapt in the process of sliding against the strapping tape, so that the upper welding teeth 11 can be pressed more closely against the strapping tape, thereby improving the welding effect.

[0063] Reference Figure 5-Figure 7 The drive mechanism 2 includes an eccentric 21, a second motor 22, and a connecting rod 23. The second motor 22 is fixed to the machine base 8. The output shaft 63 of the second motor 22 is fixed to the eccentric 21 and is coaxially arranged with the eccentric axis of the eccentric 21. One end of the connecting rod 23 is defined by a first slot for the eccentric 21 to move. The eccentric 21 is rotatably connected within the first slot. The other end of the connecting rod 23 is hinged to one end of the upper welded tooth 11 in a direction parallel to the rotation axis of the eccentric 21. The rotation axis of the eccentric 21 is parallel to the plane of the lower welded tooth 12 and is also perpendicular to the sliding direction of the upper welded tooth 11 within the first positioning slot 131.

[0064] Reference Figure 5-Figure 7 By driving the first and second motors 22 to rotate, the first and second motors 22 drive the eccentric wheel 21 to rotate, and the eccentric wheel 21 then drives the connecting rod 23 to move, and the connecting rod 23 drives the welded upper tooth 11 to slide in the first positioning groove 131.

[0065] Reference Figure 5-Figure 7 The welding state conversion mechanism 3 includes a rocker arm 31, a pressing member 32, and a lifting member 33. One end of the rocker arm 31 is rotatably connected to the machine base 8 in a direction parallel to the rotation axis of the eccentric wheel 21. The other end of the rocker arm 31 is detachably connected to the welding frame 13. The rocker arm 31 is located above the welding frame 13. The end of the rocker arm 31 hinged to the frame is located between the eccentric wheel 21 and the welding frame 13 and is disposed near the eccentric wheel 21. The pressing member 32 is used to drive the rocker arm 31 or the welding frame 13 toward the welding lower tooth 12 to the welding position. The lifting member 33 is used to drive the rocker arm 31 or the welding frame 13 toward the welding lower tooth 12 to the rest position.

[0066] Reference Figure 5-Figure 7The swing rod 31 has a certain limiting effect on the movement of the welding frame 13. By changing the position of the swing rod 31, the position of the welding frame 13 can be changed, which can facilitate the control of moving the welding frame 13 to the welding position or the rest position.

[0067] Reference Figure 5-Figure 7 The pressing member 32 includes a first seat 321, a third spring 322, and a pressing block 323. The first seat 321 is rotatably connected to the frame and is located above the rocker arm 31. The rotation axis of the first seat 321 is parallel to the plane of the welded lower tooth 12 and is also perpendicular to the rotation axis of the eccentric wheel 21. A handle 34 for applying force is fixed to the first seat 321. The top of the pressing block 323 is slidably connected to the first seat 321 in a direction perpendicular to the rotation axis of the first seat 321. A collar 325 is fixedly mounted on the outer wall of the pressing block 323. The third spring 322 is located above the collar 325 and is mounted on the outside of the pressing block 323. The upper and lower ends of the third spring 322 are respectively fixed to the first seat 321 and the collar 325.

[0068] Reference Figure 5-Figure 7 The operator rotates the handle 34 to rotate the pressing block 323 toward the side of the rocker arm 31 until the pressing block 323 abuts against the rocker arm 31. The third spring 322 drives the pressing block 323 to press on the rocker arm 31, so that the upper welding tooth 11 can press against the binding belt.

[0069] Reference Figure 5-Figure 7 An arc-shaped groove 311 is provided on the top surface of the rocker arm 31, and the axial direction of the arc-shaped groove 311 is parallel to the rotation axis direction of the first seat 321. The bottom end of the pressing block 323 is an arc-shaped protrusion matching the arc-shaped groove 311. When the first seat 321 rotates until the bottom end of the pressing block 323 is located in the arc-shaped groove 311 and abuts against the bottom wall of the arc-shaped groove 311, the sliding direction of the pressing block 323 is perpendicular to the axial direction of the eccentric wheel 21, and the pressing block 323 abuts vertically on the rocker arm 31.

[0070] Reference Figure 5-Figure 7 When the first seat 321 rotates until the end of the pressing block 323 enters the arc groove 311, without the action of external force, the end of the pressing block 323 can be confined in the arc groove 311. Even if the operator releases the handle 34, the pressing block 323 can maintain the state of pressing the rocker arm 31, and the operator does not need to control the handle 34 all the time.

[0071] Reference Figure 5-Figure 7The cam 326 is provided with a plurality of locking plates 327 and 328, and the locking plates 328 are provided with a plurality of locking plates 329. The locking plates 329 are provided with a plurality of locking plates 329. The end of the stopper 324 near the arcuate surface 3211 is conical in shape. This end of the stopper 324 near the arcuate surface 3211 has an arcuate surface, meaning the conical end is rounded, not pointed. When the first seat 321 rotates until the bottom end of the pressing block 323 enters the arcuate groove 311, the end of the stopper 324 is located within the recessed area 3212.

[0072] Reference Figure 5-Figure 7 When the first seat 321 rotates until the end of the block 324 abuts against the recessed area 3212, without the action of external force, the end of the block 324 can be confined in the recessed area 3212. Even if the operator releases the handle 34, the pressing block 323 can maintain the state of pressing the rocker arm 31, and the operator does not need to control the handle 34 all the time.

[0073] Reference Figure 5-Figure 7 The lifting member 33 includes a tension spring 331, and a second boss 332 is fixed on the machine base 8 and the rocker arm 31. The second boss 332 on the machine base 8 is located above the second boss 332 on the rocker arm 31. The two ends of the tension spring 331 are respectively hooked on the two second bosses 332, and the tension spring 331 is always in a tensioned state.

[0074] Reference Figure 5-Figure 7 When the pressing block 323 no longer applies pressure to the swing rod 31, the tension spring 331 can pull up the swing rod 31, so that the upper welding tooth 11 moves toward the side away from the lower welding tooth 12, making it easier to remove the strapping tape.

[0075] Reference Figure 5-Figure 7 The welding frame 13 is detachably connected to a cutting blade 133 by bolts. The cutting blade 133 is located near the upper welding teeth 11 and is used to cut the upper strapping tape. When the upper welding teeth 11 continuously move back and forth, the welding frame 13 will also vibrate at a certain frequency, causing the cutting blade 133 to continuously rub against the upper strapping tape, thereby cutting the strapping tape.

[0076] Reference Figure 2 and Figure 7A normally open switch 82 is provided on the machine base 8. The normally open switch 82 is located on the side of the first seat 321 close to the block 324. When the upper welding tooth 11 is in the rest position, the first seat 321 abuts against the normally open switch 82, and the normally open switch 82 controls the second motor 22 to stop running.

[0077] Of course, the above are only typical examples of the present application. In addition, the present application may have many other specific implementation methods. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present application.

Claims

1. A baler, comprising a base (8) and a tightening mechanism (4) and a welding and cutting mechanism (1) arranged on the base (8), wherein the tightening mechanism (4) is used to tighten the annular strapping tape, and the welding and cutting mechanism (1) is used to weld the strapping tapes stacked together and cut off the excess strapping tape, characterized in that: The tightening mechanism (4) includes a tightening wheel (41), a tightening plate (42), a first driving member (5) and a second driving member (57); the tightening plate (42) is fixed on the machine base (8); the tightening wheel (41) is movably connected to the machine base (8) from a side away from the tightening plate (42) to a side close to the tightening plate (42); the first driving member (5) drives the tightening wheel (41) to move on the machine base (8); the second driving member (57) drives the tightening wheel (41) to rotate; the tightening wheel (41) and the tightening plate (42) are respectively located on both sides of the thickness direction of the strapping belt and are used to clamp the strapping belt together; It also includes a baffle (43), a push plate (44) and a third driving member (7), wherein the baffle (43) is arranged on the machine base (8), and the push plate (44) is slidably connected to the machine base (8) from a side close to the baffle (43) to a side away from the baffle (43), and the third driving member (7) drives the push plate (44) to slide, and the baffle (43) and the push plate (44) are respectively located on both sides of the width direction of the strapping belt, and the push plate (44) is used to push the strapping belt against the baffle (43); The first driving member (5) includes a reduction box (6), a rotating shaft (52) and a handle; the second driving member (57) includes a reduction box (6) and a first motor (571); the reduction box (6) in the first driving member (5) and the reduction box (6) in the second driving member (57) are the same reduction box (6); the reduction box (6) includes a housing (61), an input shaft (62), an output shaft (63) and a reduction transmission mechanism (64); the input shaft (62) and the output shaft (63) are both rotatably connected to the housing (61); the reduction transmission mechanism (64) is used to The rotation speed of the input shaft (62) is reduced and then transmitted to the output shaft (63); the handle is arranged on the housing (61); the rotating shaft (52) is passed through and rotatably connected to the housing (61) of the reduction box (6); the rotating shaft (52) is rotatably connected to the machine base (8); the first motor (571) is arranged on the housing (61) and coaxially fixed to the input shaft (62) of the reduction box (6); the tightening wheel (41) is coaxially fixed to the output shaft (63) of the reduction box (6); and the axial direction of the rotating shaft (52) is parallel to the rotational axis direction of the tightening wheel (41); The third driving member (7) includes a movable block (71), an abutting block (72), a second spring (74), and a first rod (73); the second spring (74) is arranged on the push plate (44) and the machine base (8) to drive the push plate (44) to always move toward the side of the blocking frame (43); The movable block (71) is slidably connected to the machine base (8) along a direction perpendicular to the rotation axis of the rotating shaft (52); a first sliding groove (711) is provided on the movable block (71) along a direction parallel to the tightening direction of the strapping belt; the first rod (73) is fixed to the box body (61); the first rod (73) is movably connected to the first sliding groove (711) along the length direction of the first sliding groove (711); the first rod (73) is located on a side of the rotating shaft (52) close to the output shaft (63) of the reduction box (6); The abutment block (72) is arranged on the outer side wall of the movable block (71); the push plate (44) is detachably connected to the force-bearing block (45); an inclined surface (721) is provided on the top surface of the abutment block (72); the distance between the inclined surface (721) and the push frame gradually increases from the end close to the first rod (73) to the end away from the first rod (73); and the force-bearing block (45) always abuts against the inclined surface (721).

2. A baler according to claim 1, characterized in that: The first driving member (5) further comprises a torsion spring (54), a first spring (55) and two first protrusions (56). The torsion spring (54) is arranged on the rotating shaft (52) and always drives the rotating shaft (52) to rotate toward the side of the tightening wheel (41) close to the tightening plate (42). The two first protrusions (56) are respectively arranged on the machine base (8) and the box body (61). The first protrusion (56) arranged on the machine base (8) is located on the side of the first protrusion (56) arranged on the box body (61) close to the tightening wheel (41). The two ends of the first spring (55) are respectively hooked on the two first protrusions (56). The first spring (55) is always in a stretched state.

3. The baler according to claim 1, characterized in that: The first rod (73) is located on the side of the output shaft (63) of the reduction box (6) away from the tightening plate (42), and the first rod (73) is located on the side of the output shaft (63) of the reduction box (6) away from the rotating shaft (52). The retaining frame (43) is slidably connected to the machine base (8) along the sliding direction parallel to the sliding direction of the movable block (71). A second sliding groove is provided on the retaining frame (43) along the length direction parallel to the first sliding groove (711). The first rod (73) is movably connected to the second sliding groove along the length direction of the second sliding groove, so that The end of the tensioning wheel (41) that abuts against the strapping belt is the abutting end (412), and the end of the blocking frame (43) for the strapping belt to abut against is the limiting end (432). When the tensioning wheel (41) and the tightening plate (42) clamp the strapping belt, the limiting end (432) is located on the side of the abutting end (412) away from the tightening plate (42). When the tensioning wheel (41) moves to a certain gap with the tightening plate (42) for the strapping belt to be placed, the limiting end (432) is located on the side of the abutting end (412) close to the tightening plate (42).

4. A baler according to claim 3, characterized in that: The invention also includes a second rod (731) and a slider (732), wherein the second rod (731) is fixed on the first rod (73) and the slider (732), a certain distance is left between the first rod (73) and the slider (732), the slider (732) is located on the side of the output shaft (63) of the reduction gear box (6) away from the tightening plate (42), the slider (732) is located on the side of the first rod (73) close to the output shaft (63) of the reduction gear box (6), the slider (732) is located on the side of the output shaft (63) of the reduction gear box (6) away from the tightening plate (42), the slider (732) is located on the side of the output shaft (63) of the reduction gear box (6) away from the rotating shaft (52), and the slider (732) is movably connected in the second slide groove along the length direction of the second slide groove.

5. The baler according to claim 1, characterized in that: The welding and cutting mechanism (1) comprises an upper welding tooth (11), a lower welding tooth (12), a welding frame (13), a driving mechanism (2) and a welding state conversion mechanism (3); the lower welding tooth (12) is arranged on a machine base (8); a first positioning groove (131) is provided on the welding frame (13); the upper welding tooth (11) is slidably connected in the first positioning groove (131); the driving mechanism (2) drives the upper welding tooth (11) to slide back and forth in the first positioning groove (131); the welding frame (13) is movably connected to the machine base (8); and the welding state conversion mechanism (3) is used to drive the welding frame (13) to move on the machine base (8) and switch the upper welding tooth (11) between a welding position close to the lower welding tooth (12) and a rest position away from the lower welding tooth (12).

6. The baler according to claim 5, characterized in that: A plurality of ball grooves (121) are provided on the top wall of the welding upper tooth (11) in a direction parallel to the sliding direction of the welding upper tooth (11), and a ball (122) moves in the ball groove (121). The top end of the ball (122) extends out of the ball groove (121) and abuts against the top wall of the first positioning groove (131). A first gap (14) is left between the welding upper tooth (11) and the top wall of the first positioning groove (131), and a second gap (15) is left between the side walls of the welding upper tooth (11) and the inner walls of the first positioning groove (131).

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