Mechanical structure for shearing packing box strapping tape

Abstract

The invention discloses a mechanical structure for shearing a packing box strapping tape, and relates to the technical field of packing auxiliary equipment. The conveying assembly comprises a conveying belt, a fixing piece, a supporting piece and a guiding piece. A distance is reserved between the fixing piece and the supporting piece to form a positioning area. The conveying belt drives the packaging box to move so that the strapping tape can move along with the packaging box to enter the positioning area, the packaging box entering the positioning area is squeezed by the squeezing part to be sunken, a gap is formed between the strapping tape and the outer wall of the packaging box, and the strapping tape is partially separated from the packaging box. Meanwhile, the limiting pieces press and attach the strapping tape on the two sides of the extrusion piece to the outer wall of the packaging box, along with movement of the packaging box, the strapping tape makes contact with the shearing piece and is cut off by the shearing piece, and due to the fact that the packaging box is sunken, the strapping tape used for fixing the packaging box can be cut off on the premise that the shearing piece does not scratch the packaging box; and the two ends of the broken strapping tape cannot be bounced off rapidly, so that the injury to a human body is avoided.

Description

Technical Field

[0001] This invention relates to the field of packaging auxiliary equipment technology, specifically to a mechanical structure for cutting packaging box strapping. Background Technology

[0002] Plastic strapping is widely used to secure packaging boxes in industries such as product packaging, warehousing, and logistics. However, when cutting strapping, because it adheres tightly to the outer wall of the box, manual cutting requires scissors to be inserted between the strapping and the box, potentially puncturing it. This manual cutting is inefficient. Furthermore, because the strapping is elastic and tightened around the box, the ends can easily pop out and injure workers when cut. Summary of the Invention

[0003] The main objective of this invention is to provide a mechanical structure for cutting packaging box strapping, in order to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides a mechanical structure for cutting packaging box strapping, comprising: A conveying assembly includes a conveyor belt, a fixing member and a support member disposed on the conveyor belt; a gap is left between the fixing member and the support member to form a positioning area, and guide members are inclinedly provided at the ends of the fixing member and the support member; the width of the positioning area is the same as the width of the outer packaging box; a guide area is formed between the guide members; the width of the guide area decreases from the position away from the positioning area to the position adjacent to the positioning area; The shearing assembly includes extrusion members and limiting members that are spaced apart and rolled on a support member; the extrusion members are spaced apart to form a shearing zone; a shearing member is provided in the shearing zone; there is a gap between the limiting member and the extrusion members; the ends of the limiting member, the extrusion members, and the shearing members away from the support member are located on the same vertical plane; the distance between the end of the shearing member and the projection of the extrusion member on the horizontal plane is greater than the width of the strapping tape.

[0005] As a further improvement of the present invention, the fixing member includes a fixing plate fixedly disposed on the edge of the conveyor belt and multiple sets of first transmission rollers rotatably disposed on the fixing plate.

[0006] As a further improvement of the present invention, the support member includes a support plate disposed on the edge of the conveyor belt and a second transmission roller rotatably disposed on the support plate; a positioning area is formed between the opposite end faces of the first transmission roller and the second transmission roller.

[0007] As a further improvement of the present invention, the guide member includes guide plates respectively disposed on the fixed plate and the support plate; a third transmission roller is rotatably disposed on the guide plate.

[0008] As a further improvement of the present invention, the extrusion member includes two sets of extrusion rollers that are rotatably and spaced apart on the support plate, and a shearing zone is formed between the two sets of extrusion rollers; the end of the extrusion roller away from the support plate extends beyond the end of the second drive roller away from the support plate.

[0009] As a further improvement of the present invention, the outer diameter of the extrusion roller is larger than the outer diameter of the second drive roller.

[0010] As a further improvement of the present invention, the limiting member includes a limiting plate disposed on the support plate and a limiting roller rotatably disposed on the limiting plate; there is a gap between the limiting roller and the extrusion roller, and the limiting roller and the second transmission roller are located on the same vertical plane.

[0011] As a further improvement of the present invention, the limiting roller and the shearing zone are located on the same vertical plane, and the outer diameter of the limiting roller is greater than the width of the shearing zone.

[0012] As a further improvement of the present invention, the shearing member includes a connecting column disposed on the support plate and located between the two sets of extrusion rollers, and a shearing blade disposed on the connecting column; the end of the shearing blade away from the support plate extends beyond the end face of the second drive roller and is located in the area between the end face of the second drive roller away from the support plate and the end face of the extrusion roller away from the support plate.

[0013] As a further improvement of the present invention, a sliding plate is provided at the end of the connecting column; the shearing blade is arc-shaped and is disposed on the sliding plate, and the outer diameter of the shearing blade increases from one end of the sliding plate toward the other end of the support plate.

[0014] The beneficial effects of this invention are reflected in: By setting up a conveyor belt to move the packaging box, the strapping straps on the outside of the packaging box move into the positioning area. Once in the positioning area, the packaging box is squeezed and indented by the extrusion component, thus creating a gap between the strapping straps and the outer wall of the packaging box, causing the strapping straps to partially separate from the packaging box. At the same time, the limiting component presses the strapping straps on both sides of the extrusion component tightly against the outer wall of the packaging box. As the packaging box moves, the strapping straps come into contact with the shearing component and are cut by it. Because the packaging box is indented, the strapping straps used to secure the packaging box can be cut without the shearing component tearing the packaging box. Under the pressure of the limiting component, the ends of the cut strapping straps will not spring back rapidly, avoiding injury to the human body. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a mechanical structure for cutting packaging box strapping according to the present invention; Figure 2 This is a schematic diagram of the fixing component structure of a mechanical structure for cutting packaging box strapping according to the present invention; Figure 3This is a schematic diagram of the support structure of a mechanical structure for cutting packaging box strapping according to the present invention; Figure 4 This invention provides a mechanical structure for cutting packaging box strapping. Figure 3 Enlarged structural diagram at point A; Figure 5 This is a schematic diagram of the shearing blade structure of a mechanical structure for cutting packaging box strapping according to the present invention; Explanation of reference numerals in the attached figures: 1. Conveyor belt; 101. Belt body; 102. Support; 2. Fixing component; 201. Fixing plate; 202. First drive roller; 3. Support component; 301. Support plate; 302. Second drive roller; 4. Positioning area; 5. Guide component; 501. Guide plate; 502. Third drive roller; 6. Guide area; 7. Extrusion component; 701. Extrusion roller; 8. Limiting component; 801. Limiting plate; 802. Limiting roller; 9. Shearing area; 10. Shearing component; 1001. Connecting column; 1002. Shearing blade; 1003. Sliding plate; 11. Mounting groove; 12. Rotating shaft; 13. Guide groove; 14. Guide rotating rod; 15. Fixing groove; 16. Fixing shaft; 17. Limiting groove; 18. Limiting shaft. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are merely some, not all, of the embodiments of this invention. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0017] In one embodiment, see Figure 1 The present invention provides a mechanical structure for cutting packaging box strapping, comprising a conveying assembly and a cutting assembly.

[0018] The conveying assembly includes a conveyor belt 1, a fixing member 2 and a support member 3 disposed on the conveyor belt 1. A positioning area 4 is formed by a gap between the fixing member 2 and the support member 3. Guide members 5 are inclinedly provided at the ends of the fixing member 2 and the support member 3. The width of the positioning area 4 is the same as the width of the outer packaging box. A guide area 6 is formed between the guide members 5. The width of the guide area 6 decreases from the position away from the positioning area 4 to the position adjacent to the positioning area 4. The shearing assembly includes a squeezing member 7 and a limiting member 8 disposed at intervals and rolling on the support member 3. A shearing area 9 is formed by a gap between the squeezing members 7. A shearing member 10 is provided in the shearing area 9. There is a gap between the limiting member 8 and the squeezing member 7. The ends of the limiting member 8, the squeezing member 7 and the shearing member 10 away from the support member 3 are located on the same vertical plane. The distance between the end of the shearing member 10 and the projection of the squeezing member 7 on the horizontal plane is greater than the width of the strapping.

[0019] Further, see Figure 1 , 2 The fixing component 2 includes a fixing plate 201 fixedly disposed on the edge of the conveyor belt 1 and multiple sets of first transmission rollers 202 rotatably disposed on the fixing plate 201.

[0020] Preferably, the conveyor belt 1 adopts an existing structure, which includes a belt body 101 and a support 102 for supporting the belt body 101, with a fixing plate 201 welded to the support 102.

[0021] Further, see Figure 1 , 3 The support member 3 includes a support plate 301 disposed on the edge of the conveyor belt 1 and a second transmission roller 302 rotatably disposed on the support plate 301. A positioning area 4 is formed between the opposite end faces of the first transmission roller 202 and the second transmission roller 302.

[0022] Preferably, the support plate 301 is welded to the bracket 102, and the support plate 301 and the fixed plate 201 are arranged opposite to each other. Multiple sets of mounting grooves 11 are provided on the support plate 301 and the fixed plate 201 respectively. A rotating hole is provided in the mounting groove 11, and a rotating shaft 12 is rotatably provided in the rotating hole. The first transmission roller 202 and the second transmission roller 302 are fixedly connected to the rotating shaft 12 on the fixed plate 201 and the support plate 301 respectively. The first transmission roller 202 and the second transmission roller 302 extend beyond the end face of the fixed plate 201 and the support plate 301 respectively.

[0023] Further, see Figure 1 , 2 3. The guide component 5 includes a guide plate 501 respectively disposed on the fixed plate 201 and the support plate 301, and a third transmission roller 502 is rotatably disposed on the guide plate 501.

[0024] Preferably, two sets of guide plates 501 are provided, and the two sets of guide plates 501 are welded to the ends of the fixed plate 201 and the support plate 301 in a figure-eight shape, so that the width of the guide area 6 between the two sets of guide plates 501 decreases.

[0025] Preferably, the guide plate 501 is provided with a guide groove 13, and a guide rod 14 is provided in the guide groove 13. The third transmission roller 502 is connected to the guide rod 14, and the second transmission roller 302 extends beyond the end face of the guide plate 501.

[0026] In the above setup, the packaging box is conveyed towards the guide plate 501 via the conveyor belt 1. After the packaging box reaches the guide plate 501, it enters the guide area 6. The third drive roller 502 reduces the friction of the packaging box as it moves with the conveyor belt 1. Under the action of the guide plate 501, the packaging box enters the positioning area 4. The two sides of the packaging box contact the first drive roller 202 and the second drive roller 302 respectively. As the packaging box moves along the positioning area 4, the strapping tape that is close to the surface of the packaging box moves with the packaging box and intermittently contacts the first drive roller 202 and the second drive roller 302.

[0027] Further, see Figure 1 , 3 4. The extrusion component 7 includes two sets of extrusion rollers 701 that are rotatably and spaced apart on the support plate 301. A shearing zone 9 is formed between the two sets of extrusion rollers 701. The end of the extrusion roller 701 away from the support plate 301 extends beyond the end of the second transmission roller 302 away from the support plate 301.

[0028] Preferably, the support plate 301 is provided with two sets of fixing grooves 15 at intervals, and a fixing shaft 16 is rotatably provided in the fixing groove 15, and the extrusion roller 701 is connected to the fixing shaft 16.

[0029] Preferably, the distance between the opposite end faces of the two sets of extrusion rollers 701 is greater than the width of the strapping tape by 30mm-60mm.

[0030] Further, see Figure 1 , 3 4. The outer diameter of the extrusion roller 701 is greater than the outer diameter of the second drive roller 302.

[0031] Preferably, the fixed shaft 16 and the rotating shaft 12 connected to the second transmission roller 302 are located on the same plane, and the depth of the fixed groove 15 is greater than the depth of the mounting groove 11.

[0032] Preferably, the length of the end of the extrusion roller 701 away from the support plate 301 extending beyond the end of the second drive roller 302 away from the support plate 301 is between 10mm and 30mm. After the packaging box moves with the conveyor belt 1 and comes into contact with the extrusion roller 701, since the extrusion roller 701 extends beyond the second drive roller 302, the extrusion roller 701 applies pressure to the outer wall surface of the packaging box, causing a local indentation on the outer surface of the packaging box in contact with the extrusion roller 701. Under the synchronous action of the two sets of extrusion rollers 701, the outer surface of the packaging box in contact with the two sets of extrusion rollers 701 is indented. When the strapping moves with the packaging box to between the two sets of extrusion rollers 701, since the distance between the two sets of extrusion rollers 701 is greater than the width of the strapping, the two sets of extrusion rollers 701 are located on both sides of the strapping. The strapping is not under pressure while the packaging box is under pressure and indented, resulting in a gap between the strapping and the packaging box.

[0033] Further, see Figure 1 , 3 The limiting member 8 includes a limiting plate 801 disposed on the support plate 301 and a limiting roller 802 rotatably disposed on the limiting plate 801. There is a gap between the limiting roller 802 and the extrusion roller 701, and the limiting roller 802 and the second transmission roller 302 are located on the same vertical plane.

[0034] Preferably, the limiting plate 801 is vertically welded to the upper and lower sides of the support plate 301. The limiting plate 801 is provided with a limiting groove 17. A limiting shaft 18 is rotatably provided in the limiting groove 17. The limiting roller 802 is connected to the limiting shaft 18 and extends beyond the end face of the limiting plate 801.

[0035] Further, see Figure 1 , 3 The limiting roller 802 and the shearing zone 9 are located on the same vertical plane, and the outer diameter of the limiting roller 802 is greater than the width of the shearing zone 9.

[0036] Preferably, the limiting rollers 802 are located directly above and below the shearing zone 9. When the strapping moves with the packaging box to the shearing zone 9 between the two sets of extrusion rollers 701, the limiting rollers 802 on the upper and lower sides of the shearing zone 9 press the strapping tightly against the outer wall of the packaging box to prevent the end from popping open when the strapping breaks.

[0037] Further, see Figure 1 , 3 4. The shearing component 10 includes a connecting column 1001 disposed on the support plate 301 and located between the two sets of extrusion rollers 701, and a shearing blade 1002 disposed on the connecting column 1001. One end of the shearing blade 1002 away from the support plate 301 extends beyond the end face of the second transmission roller 302 and is located in the area between the end face of the second transmission roller 302 away from the support plate 301 and the end face of the extrusion roller 701 away from the support plate 301.

[0038] Preferably, the connecting post 1001 is welded to the support plate 301 and located in the middle of the two sets of extrusion rollers 701. The shearing blade 1002 is welded to the connecting post 1001. When the strapping tape arrives in the shearing zone 9 with the packaging box and separates from the extrusion rollers 701, the packaging box receiving extrusion roller 701 on one side of the strapping tape is pressed down and recessed. There is a gap between the strapping tape and the outer wall of the packaging box. During the process of the packaging box moving the strapping tape, the strapping tape comes into contact with the shearing blade 1002 and is sheared. When the strapping tape breaks, both ends are pressed by the limiting roller 802 to prevent the ends from springing open when the strapping tape breaks.

[0039] Further, see Figure 1 , 3 5. A sliding plate 1003 is provided at the end of the connecting column 1001. The shearing blade 1002 is arc-shaped and is provided on the sliding plate 1003. The outer diameter of the shearing blade 1002 increases from one end of the sliding plate 1003 toward the support plate 301.

[0040] Preferably, the sliding plate 1003 and the connecting column 1001 are vertically welded to form an "L" shape. The shearing blade 1002 is welded at the connection between the sliding plate 1003 and the connecting column 1001. When the strapping tape arrives in the shearing zone 9 with the packaging box and separates from the extrusion roller 701, the extrusion roller 701 on one side of the strapping tape is pressed down and recessed. There is a gap between the strapping tape and the outer wall of the packaging box. During the process of the packaging box moving the strapping tape, the sliding plate 1003 enters the gap between the strapping tape and the outer wall of the packaging box and is located on one side of the strapping tape. As the packaging box moves, the strapping tape comes into contact with the shearing blade 1002 and is sheared until it is cut off by the increasing outer diameter. When the strapping tape breaks, both ends are pressed by the limiting roller 802 to prevent the ends from springing open when the strapping tape breaks.

[0041] In the above setup, the packaging box moves and the strapping strap moves into the shearing zone 9. The compression roller 701 presses down and indents the outer wall of the packaging box, creating a gap between the strapping strap and the packaging box. The shearing blade 1002 cuts the strapping strap. Due to the indentation, the shearing blade 1002 will not tear the packaging box.

[0042] In this embodiment, the packaging box moves towards the guide plate 501 along the conveyor belt 1. Under the action of the guide plate 501, the packaging box enters the positioning area 4. As the conveyor belt 1 moves, the outer wall of the packaging box contacts the extrusion roller 701. The contact position between the extrusion roller 701 and the packaging box is depressed by force. As the packaging box moves, the strapping moves to the shearing area 9 between the two sets of extrusion rollers 701. At this time, the strapping between the two sets of extrusion rollers 701 is not under pressure. The strapping on the upper and lower sides of the two sets of extrusion rollers 701 is pressed tightly against the outer wall of the packaging box by the limiting roller 802. During the movement of the packaging box, the strapping comes into contact with the shearing blade 1002 and is cut. Since there is a gap between the strapping and the packaging box, the packaging box will not be cut by the shearing blade 1002 when the strapping is cut. Furthermore, the ends of the cut strapping are pressed by the limiting roller 802 and will not spring open quickly.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A mechanical structure for cutting packaging box strapping, characterized in that, include: The conveying assembly includes a conveyor belt (1), a fixing member (2) and a support member (3) disposed on the conveyor belt (1); a gap is left between the fixing member (2) and the support member (3) to form a positioning area (4), and guide members (5) are inclinedly provided at the ends of the fixing member (2) and the support member (3); the width of the positioning area (4) is consistent with the width of the outer packaging box; a guide area (6) is formed between the guide members (5); the width of the guide area (6) decreases from the position away from the positioning area (4) to the position adjacent to the positioning area (4); The shearing assembly includes an extrusion member (7) and a limiting member (8) spaced apart and rolled on the support member (3); the extrusion members (7) are spaced apart to form a shearing zone (9); a shearing member (10) is provided in the shearing zone (9); there is a gap between the limiting member (8) and the extrusion member (7); the ends of the limiting member (8), the extrusion member (7), and the shearing member (10) away from the support member (3) are located on the same vertical plane; the distance between the end of the shearing member (10) and the projection of the extrusion member (7) on the horizontal plane is greater than the width of the strapping.

2. The mechanical structure for cutting packaging box strapping according to claim 1, characterized in that: The fixing component (2) includes a fixing plate (201) fixedly disposed on the edge of the conveyor belt (1) and multiple sets of first transmission rollers (202) rotatably disposed on the fixing plate (201).

3. The mechanical structure for cutting packaging box strapping according to claim 2, characterized in that: The support member (3) includes a support plate (301) disposed on the edge of the conveyor belt (1) and a second transmission roller (302) rotatably disposed on the support plate (301); a positioning area (4) is formed between the opposite end faces of the first transmission roller (202) and the second transmission roller (302).

4. The mechanical structure for cutting packaging box strapping according to claim 3, characterized in that: The guide (5) includes a guide plate (501) respectively disposed on a fixed plate (201) and a support plate (301); a third transmission roller (502) is rotatably disposed on the guide plate (501).

5. The mechanical structure for cutting packaging box strapping according to claim 4, characterized in that: The extrusion member (7) includes two sets of extrusion rollers (701) that are rotatably and spaced apart on the support plate (301), and a shearing zone (9) is formed between the two sets of extrusion rollers (701); one end of the extrusion roller (701) away from the support plate (301) extends beyond the end of the second drive roller (302) away from the support plate (301).

6. The mechanical structure for cutting packaging box strapping according to claim 5, characterized in that: The outer diameter of the extrusion roller (701) is larger than the outer diameter of the second drive roller (302).

7. The mechanical structure for cutting packaging box strapping according to claim 6, characterized in that: The limiting member (8) includes a limiting plate (801) disposed on the support plate (301) and a limiting roller (802) rotatably disposed on the limiting plate (801); there is a gap between the limiting roller (802) and the extrusion roller (701), and the limiting roller (802) and the second transmission roller (302) are located on the same vertical plane.

8. The mechanical structure for cutting packaging box strapping according to claim 7, characterized in that: The limiting roller (802) and the shearing zone (9) are located on the same vertical plane, and the outer diameter of the limiting roller (802) is greater than the width of the shearing zone (9).

9. The mechanical structure for cutting packaging box strapping according to claim 8, characterized in that: The shearing component (10) includes a connecting column (1001) disposed on the support plate (301) and located between two sets of extrusion rollers (701), and a shearing blade (1002) disposed on the connecting column (1001); one end of the shearing blade (1002) away from the support plate (301) extends beyond the end face of the second transmission roller (302) and is located in the area between the end face of the second transmission roller (302) away from the support plate (301) and the end face of the extrusion roller (701) away from the support plate (301).

10. The mechanical structure for cutting packaging box strapping according to claim 9, characterized in that: The end of the connecting column (1001) is provided with a sliding plate (1003); the shearing blade (1002) is arc-shaped and is provided on the sliding plate (1003), and the outer diameter of the shearing blade (1002) increases from one end of the sliding plate (1003) toward the other end of the support plate (301).

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