CORE OF HIGH-EFFICIENCY AND HIGH-SPEED CARTON SEALER AND METHOD FOR USING THE SAME

Abstract

The invention belongs to the technical field of mechanical equipment and relates to a core of a high-efficiency and high-speed carton sealer, which is suitable for soft or empty cartons and can also prevent tape from being folded and the tape that has been applied from falling off. The use of the core of a high-efficiency and high-speed carton sealer in a packaging production line improves the sealing efficiency, reduces the defective rate of sealing, lowers the requirements on the quality of cartons and significantly improves the economic benefit. For the core, a second first cylinders used to control the tightness of a return spring of a rear arm wheel, so that the spring has different restoring forces at different stages; and a first cylinder is used to control pre-stretched tape, so that the tape has different tensions at different stages, thus achieving the above functions of the core of the carton sealer.

Claims

1. A core of a high-efficiency and high-speed carton sealer, including a main fixing plate (1), a first cylinder (4), a return spring (12), a spring (13), a front arm (15), a rear arm (16), a connecting rod (17) and a second cylinder (9), wherein a tape roll fixing core seat (2) is fixed on an upper part of the main fixing plate (1), a tension-variable mechanism bracket (3) is fixed in the middle of the main fixing plate (1), a front arm shaft (19) and a rear arm shaft (20) are fixed at a lower part of the main fixing plate (1), a one-way knurled wheel (7) and a first tape guide wheel (25) are fixed on the main fixing plate (1), the first cylinder (4) is fixed on the tension-variable mechanism bracket (3), a pre-stretching roller (5) is fixed at a top end of an ejector rod of the first cylinder (4), the tension-variable mechanism bracket (3) is provided with a guide rod (6) corresponding to the pre-stretching roller (5), the front arm (15) can rotate around the front arm shaft (19), the rear arm (16) can rotate around the rear arm shaft (20), one end of the connecting rod (17) is rotatably connected to the front arm (15) through a first connecting rod shaft (18), the other end of the connecting rod (17) is rotatably connected to the rear arm (16) through a second connecting rod shaft (11), the front arm (15) is provided with a front arm wheel (21) and a second tape guide wheel (26), the rear arm (16) is provided with a rear arm wheel (22), the bottom of the second cylinder (9) is arranged on an elasticity-variable mechanism fixing shaft (8) which is fixed on the main fixing plate (1), the second cylinder (9) can rotate around the elasticity-variable mechanism fixing shaft (8), a spring stretching plate (10) is fixed at a top end of an ejector rod of the second cylinder (9), two return springs (12) are fixed on the spring stretching plate (10), the other ends of the return springs (12) are fixed on spring fixing plates (14) of the rear arm (16), a first rear arm limiting block (23) and a second rear arm limiting block (24) are fixed on the main fixing plate (1), the second rear arm limiting block (24) is provided with a threaded rod (31), the spring (13) is fixed at a top end of the threaded rod (31), a tape guide plate shaft (28) and a tape finger-pressing member shaft (30) are fixed on the front arm (15), the tape guide plate shaft (28) is provided with a tape guide plate (27), and the tape finger-pressing member shaft (30) is provided with a tape finger-pressing member (29).

2. The core of a high-efficiency and high-speed carton sealer according to claim 1, wherein the front arm wheel (21) and the rear arm wheel (22) are made of rubber and plastic materials.

3. A method for using the core of a high-efficiency and high-speed carton sealer according to claim 1, comprising the following steps: (1) when a carton to be sealed quickly enters a core area of the high-speed carton sealer and approaches the front arm wheel (21) of the core, the first cylinder (4) and the second cylinder (9) are in a deflated state, the front arm wheel (21) made of rubber and plastic materials contacts a front side of the carton to be sealed; and since the second cylinder (9) is in a deflated state and the return springs (12) are in a relaxed state, tape can be normally applied to the front side of the high-speed moving carton to be sealed, the tape previously stretched out by the first cylinder (4) via the pre-stretching roller (5) is used, and the tape has been firmly applied to the front side of the carton to be sealed before being tightened; (2) then the core of the high-speed carton sealer seals an upper or lower side of the carton to be sealed; after the tape previously stretched out by the pre-stretching roller (5) is used up, tape on a tape roll is used; at this time, since a front end of the tape has been fixed on the front side of the carton to be sealed, the tape can also continue to be pulled down quickly from the tape roll even if the carton is moved fast, thereby ensuring that the core of the high-speed carton sealer can quickly seal the upper or lower side of the carton to be sealed; (3) before the upper or lower side of the carton to be sealed is completely sealed, the second cylinder (9) and the first cylinder (4) are inflated separately, wherein the inflation of the second cylinder (9) allows the return springs (12) to be stretched, which increases the restoring force to the rear arm wheel; and the inflation of the first cylinder (4) allows the pre-stretching roller (5) to be pushed out, the tape can only be pulled out from the tape roll due to the presence of the one-way knurled wheel (7) so as to complete the pre-stretching of the tape, the first cylinder (4) is deflated before a blade cuts off the tape to release the tension of the tape, the remaining tension of the tape is effectively controlled by controlling the deflation of the first cylinder (4), and then the blade cuts off the tape; and (4) after the tape is cut off, a back side of the carton to be sealed is sealed, then the tape is flat to be rolled by the rear arm wheel (22), then the return speed of the rear arm wheel (22) is increased under the restoring force of the return springs (12) and the auxiliary action of the spring (13) on the second rear arm wheel limiting block (24), the rear arm wheel (22) can tightly fit the surface of the carton for quick sealing when reaching the back side of the carton to complete quick sealing of the carton, the remaining part of the pre-stretched tape is to be used for sealing a front side of the next carton after this carton is sealed, and then the second cylinder (9) is deflated to complete the entire sealing process of the carton.

4. A method for using the core of a high-efficiency and high-speed carton sealer according to claim 3, wherein the inflation of the first cylinder (4) and the second cylinder (9) is controlled by a solenoid valve, the pull-in of which is controlled by a sensor.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The invention will be further described with reference to the drawings and embodiments.

[0016] FIG. 1 is a schematic structural view of a core of a high-efficiency and high-speed carton sealer according to the invention;

[0017] FIG. 2 is a first schematic view of the internal structure of the core of the high-efficiency and high-speed carton sealer according to the invention;

[0018] FIG. 3 is a second schematic view of the internal structure of the core of the high-efficiency and high-speed carton sealer according to the invention;

[0019] FIG. 4 is a third schematic view of the internal structure of the core of the high-efficiency and high-speed carton sealer according to the invention; and

[0020] FIG. 5 is a fourth schematic view of the internal structure of the core of the high-efficiency and high-speed carton sealer according to the invention.

[0021] In the Figures, 1. main fixing plate; 2. tape roll fixing core seat; 3. tension-variable mechanism bracket; 4. first cylinder; 5. pre-stretching roller; 6. guide rod; 7. one-way knurled wheel; 8. elasticity-variable mechanism fixing shaft; 9. second cylinder; 10. spring stretching plate; 11. second connecting rod shaft; 12. return spring; 13. spring; 14. spring fixing plate; 15. front arm; 16. rear arm; 17. connecting rod; 18. first connecting rod shaft; 19. front arm shaft; 20. rear arm shaft; 21. front arm wheel; 22. rear arm wheel; 23. first rear arm limiting block; 24. second rear arm limiting block; 25. first tape guide wheel; 26. second tape guide wheel; 27. tape guide plate; 28. tape guide plate shaft; 29. tape finger-pressing member; 30. tape finger-pressing member shaft; 31. threaded rod.

DETAILED DESCRIPTION OF THE INVENTION

[0022] The invention will be further described in detail with reference to the drawings. The drawings are simplified schematic views, which only illustrate the basic structure of the invention in a schematic manner, and therefore only show the configuration related to the invention.

[0023] Referring to FIGS. 1 to 5 for Particular Embodiment 1, a core of a high-efficiency and high-speed carton sealer includes a main fixing plate 1, a first cylinder 4, a return spring 12, a spring 13, a front arm 15, a rear arm 16, a connecting rod 17 and a second cylinder 9, wherein a tape roll fixing core seat 2 is fixed on an upper part of the main fixing plate 1, a tension-variable mechanism bracket 3 is fixed in the middle of the main fixing plate 1, a front arm shaft 19 and a rear arm shaft 20 are fixed at a lower part of the main fixing plate 1, a one-way knurled wheel 7 and a first tape guide wheel 25 are fixed on the main fixing plate 1, the first cylinder 4 is fixed on the tension-variable mechanism bracket 3, a pre-stretching roller 5 is fixed at a top end of an ejector rod of the first cylinder 4, the tension-variable mechanism bracket 3 is provided with a guide rod 6 corresponding to the pre-stretching roller 5, the front arm 15 can rotate around the front arm shaft 19, the rear arm 16 can rotate around the rear arm shaft 20, one end of the connecting rod 17 is rotatably connected to the front arm 15 through a first connecting rod shaft 18, the other end of the connecting rod 17 is rotatably connected to the rear arm 16 through a second connecting rod shaft 11, the front arm 15 is provided with a front arm wheel 21 and a second tape guide wheel 26, the rear arm 16 is provided with a rear arm wheel 22, the bottom of the second cylinder 9 is arranged on an elasticity-variable mechanism fixing shaft 8 which is fixed on the main fixing plate 1, the second cylinder 9 can rotate around the elasticity-variable mechanism fixing shaft 8, a spring stretching plate 10 is fixed at a top end of an ejector rod of the second cylinder 9, two return springs 12 are fixed on the spring stretching plate 10, the other ends of the return springs 12 are fixed on spring fixing plates 14 of the rear arm 16, a first rear arm limiting block 23 and a second rear arm limiting block 24 are fixed on the main fixing plate 1, the second rear arm limiting block 24 is provided with a threaded rod 31, the spring 13 is fixed at a top end of the threaded rod 31, a tape guide plate shaft 28 and a tape finger-pressing member shaft 30 are fixed on the front arm 15, the tape guide plate shaft 28 is provided with a tape guide plate 27, and the tape finger-pressing member shaft 30 is provided with a tape finger-pressing member 29.

[0024] The front arm wheel 21 and the rear arm wheel 22 are made of rubber and plastic materials.

[0025] A method for using the core of a high-efficiency and high-speed carton sealer comprises the following steps:

[0026] (1) when a carton to be sealed quickly enters a core area of the high-speed carton sealer and approaches the front arm wheel 21 of the core, the first cylinder 4 and the second cylinder 9 are in a deflated state, the front arm wheel 21 made of rubber and plastic materials contacts a front side of the carton to be sealed; and since the second cylinder 9 is in a deflated state and the return springs 12 are in a relaxed state, tape can be normally applied to the front side of the high-speed moving carton to be sealed, the tape previously stretched out by the first cylinder 4 via the pre-stretching roller 5 is used, and the tape has been firmly applied to the front side of the carton to be sealed before being tightened;

[0027] (2) then the core of the high-speed carton sealer seals an upper or lower side of the carton to be sealed; after the tape previously stretched out by the pre-stretching roller 5 is used up, tape on a tape roll is used; at this time, since a front end of the tape has been fixed on the front side of the carton to be sealed, the tape can also continue to be pulled down quickly from the tape roll even if the carton is moved fast, thereby ensuring that the core of the high-speed carton sealer can quickly seal the upper or lower side of the carton to be sealed;

[0028] (3) before the upper or lower side of the carton to be sealed is completely sealed, the second cylinder 9 and the first cylinder 4 are inflated separately, wherein the inflation of the second cylinder 9 allows the return springs 12 to be stretched, which increases the restoring force to the rear arm wheel; and the inflation of the first cylinder 4 allows the pre-stretching roller 5 to be pushed out, the tape can only be pulled out from the tape roll due to the presence of the one-way knurled wheel 7 so as to complete the pre-stretching of the tape, the first cylinder 4 is deflated before a blade cuts off the tape to release the tension of the tape, the remaining tension of the tape is effectively controlled by controlling the deflation of the first cylinder 4, and then the blade cuts off the tape; and

[0029] (4) after the tape is cut off, a back side of the carton to be sealed is sealed, then the tape is flat to be rolled by the rear arm wheel 22, then the return speed of the rear arm wheel 22 is increased under the restoring force of the return springs 12 and the auxiliary action of the spring 13 on the second rear arm wheel limiting block 24, the rear arm wheel 22 can tightly fit the surface of the carton for quick sealing when reaching the back side of the carton to complete quick sealing of the carton, the remaining part of the pre-stretched tape is to be used for sealing a front side of the next carton after this carton is sealed, and then the second cylinder 9 is deflated to complete the entire sealing process of the carton.

[0030] The inflation of the first cylinder 4 and the second cylinder 9 is controlled by a solenoid valve, the pull-in of which is controlled by a sensor.

[0031] The core of a high-efficiency and high-speed carton sealer designed by the invention enables high-quality and quick sealing of front and back sides of a carton to be sealed, and can also seal upper and lower sides of the carton, thus effectively improving the sealing speed, lowering the quality requirements on tape and cartons, reducing the defective rate of sealing and comprehensively improving the economic benefit. The core of a high-efficiency and high-speed carton sealer is scientific and reasonable in structure, unique in concept, and convenient and reliable to use, can be applied in a wide range and is suitable for popularization.

[0032] It is apparent that the above embodiment is merely an example for clear description and not intended to limit the embodiments. Those of ordinary skill in the art can also make other different forms of changes or alternations based on the above description. There is no need and no way to exhaustively list all the embodiments. Obvious changes or alternations derived therefrom still fall within the protection scope of the invention.