Sealing and cutting mechanism for packaging bag capable of preventing hot sealing edge from sticking bag

Abstract

The utility model relates to the technical field of packaging bag heat sealing and cutting, in particular to a sealing and cutting mechanism of a packaging bag, which is capable of avoiding bag sticking of heat sealing edges and comprises a first heat sealing plate, a second heat sealing plate, a first material pushing plate, a second material pushing plate, a first driving mechanism and a second driving mechanism. The first driving mechanism drives the first heat sealing edge plate to move in the X direction, the first material pushing plate moves in the reverse direction in the X direction, the first material pushing plate can push down a packaging bag attached to the first heat sealing plate, the second driving mechanism drives the second heat sealing edge plate to move in the reverse direction in the X direction, the second material pushing plate moves in the X direction, and the second material pushing plate can push down a packaging bag attached to the second heat sealing plate. And the cut packaging bag can be prevented from being adhered to the heat edge sealing device, so that the edge sealing efficiency of the packaging bag is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat-sealing and cutting of packaging bags, in particular to a sealing and cutting mechanism of packaging bags which can avoid heat-sealing edges from sticking to the bag. Background Art

[0002] When the existing heat-sealing device heat-seals the packaging bag, due to the high heat-sealing temperature, the sealed edge of the packaging bag is easily adhered to the heat-sealing device after being heated, resulting in the cut packaging bag being unable to fall from the heat-sealing device by itself, causing the next packaging bag to overlap with the previous packaging bag that cannot fall when the edge is sealed, causing the two packaging bags to stick together, thereby reducing the efficiency of the packaging bag edge sealing. Therefore, there is an urgent need for a packaging bag sealing and cutting mechanism that can prevent the heat-sealed edge from sticking to the bag, which can prevent the cut packaging bag from sticking to the heat-sealing device, thereby improving the packaging bag edge sealing efficiency. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a sealing and cutting mechanism for packaging bags which can prevent the packaging bags from sticking to the heat sealing device after cutting, thereby improving the sealing efficiency of the packaging bags.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a sealing and cutting mechanism for a packaging bag to avoid heat-sealed edge sticking, comprising:

[0005] Pedestal;

[0006] The heat sealing mechanism is connected to the base, and the heat sealing mechanism includes two first heat sealing devices and a second heat sealing device which are stacked and arranged;

[0007] The first heat sealing edge device includes a first fixed seat, a spring, a pin shaft, a first heat sealing plate, a cutting tool, and a first push plate. The first fixed seat is movably connected to the base along the X direction. The first fixed seat is provided with a through hole for sliding cooperation with the pin shaft. The pin shaft passes through the through hole and is connected to the first heat sealing plate. The spring is sleeved on the pin shaft. The spring is located between the first fixed seat and the first heat sealing plate. The first heat sealing plate is provided with a strip groove, and the groove direction faces the X direction. The cutting tool is located in the first strip groove, and the cutting tool is connected to the first fixed seat. The first push plate is movably connected to the base along the X direction, and the first push plate is located below the first heat sealing plate.

[0008] A first driving mechanism, the first driving mechanism is used to move the first fixed seat and the first push plate;

[0009] The second heat sealing edge device comprises a second heat sealing plate, a second fixed seat and a second push plate, the second fixed seat is movably connected to the base along the X direction, the second heat sealing plate is connected to the second fixed seat, the second heat sealing plate is provided with a second strip groove matching the notch of the first strip groove, the second push plate is movably connected to along the X direction, and the second push plate is located below the second heat sealing plate;

[0010] A second driving mechanism, the second driving mechanism is used to drive the second fixed seat and the second push plate to move;

[0011] The first driving mechanism drives the first fixed seat and the first push plate to switch between the first state and the second state;

[0012] The second driving mechanism drives the second fixed seat and the second push plate to switch between the second state and the first state;

[0013] In the first state, the first heat sealing plate is in contact with the second heat sealing plate, the cutting tool is located in the second strip groove, the first push plate is located on one side of the first heat sealing plate in the X direction, and the second push plate is located on the opposite side of the second heat sealing plate in the X direction;

[0014] In the second state, the first heat sealing plate is away from the second heat sealing plate, the cutting tool is located in the first strip groove, the first push plate is located on the opposite side of the first heat sealing plate in the X direction, and the second push plate is located on the X side of the second heat sealing plate.

[0015] Further, the first driving mechanism includes a first connecting column, a second connecting column, a first connecting rod, a second connecting rod, a third connecting rod and a first cylinder, the middle portion of the first connecting rod is pivotally connected to the base through a first pivot axis, one end of the second connecting rod is pivotally connected to one end of the first connecting rod through a second pivot axis, the cylinder body of the first cylinder is pivotally connected to the base through a third pivot axis, the third pivot axis is located on one side of the second pivot axis in the X direction, the piston rod of the first cylinder is pivotally connected to one end of the first connecting rod through the second pivot axis, and one end of the third connecting rod is pivotally connected to the other end of the first connecting rod through a fourth pivot axis The fourth pivot axis is located below the second pivot axis, one end of the first connecting column is pivoted to the other end of the second connecting rod through the fifth pivot axis, the fifth pivot axis is located on the opposite side of the second pivot axis in the X direction, the first fixed seat is connected to the other end of the first connecting column, one end of the second connecting column is pivoted to the other end of the third connecting rod through the sixth pivot axis, the sixth pivot axis is located below the fifth pivot axis, the first push plate is connected to the other end of the second connecting column, and the axial directions of the first pivot axis, the second pivot axis, the third pivot axis, the fourth pivot axis, the fifth pivot axis and the sixth pivot axis are all in the Y direction.

[0016] Furthermore, the second driving mechanism has the same structure as the first driving mechanism and is symmetrically arranged.

[0017] Furthermore, the sealing and cutting mechanism of the packaging bag to avoid heat-sealed edges from sticking together also includes a collecting box. In the first state, the collecting box is located below the first heat-sealing plate and the second heat-sealing plate.

[0018] Furthermore, a through opening is provided in the Y direction of the collecting box, a second cylinder is provided on the base, the cylinder body of the second cylinder is connected to the base, the axial direction of the second cylinder is in the Y direction, a push plate is provided on the piston rod of the second cylinder, the push plate is located in the collecting box, the shape and size of the push plate match the opening, a conveyor is provided in the opening on the opposite side of the Y direction, and the belt surface of the conveyor is located below the opening on the opposite side of the Y direction.

[0019] Furthermore, a first guide rail along the X direction is provided on the base, the first guide rail is located on the Y direction side of the heat sealing mechanism, a first slider is provided on the first limiting column, the first slider is slidably connected to the first guide rail, a second guide rail along the X direction is provided on the base, the second guide rail is located below the first guide rail, a second slider is provided on the second limiting column, and the second slider is slidably connected to the second guide rail.

[0020] The beneficial effect of the utility model is that compared with the prior art, it can prevent the packaging bag from sticking to the heat sealing device after cutting, thereby improving the edge sealing efficiency of the packaging bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a sealing and cutting mechanism of a packaging bag for preventing heat-sealed edges from sticking to the bag in a specific implementation mode of the utility model;

[0022] Figure 2 for Figure 1 A magnified view of part A;

[0023] Figure 3 for Figure 1 A magnified view of part B;

[0024] Figure 4 It is a top view of a sealing and cutting mechanism of a packaging bag for avoiding heat-sealed edges from sticking to the bag according to a specific implementation method of the utility model.

[0025] Description of symbols

[0026] 1. Base;

[0027] 2. heat sealing mechanism; 21. first heat sealing edge device; 211. first fixing seat; 212. spring; 213. pin; 214. first heat sealing plate; 2141. first strip groove; 215. cutting tool; 216. first push plate; 22. second heat sealing edge device; 221. second fixing seat; 222. second heat sealing plate; 2221. second strip groove; 223. second push plate;

[0028] 3. First driving mechanism; 31. First limiting column; 311. Fifth pivot axis; 32. Second limiting column; 321. Sixth pivot axis; 33. First connecting rod; 331. First pivot axis; 332. Second pivot axis; 333. Fourth pivot axis; 34. Second connecting rod; 35. Third connecting rod; 36. First cylinder; 361. Third pivot axis;

[0029] 4. Second driving mechanism;

[0030] 5. Collection box;

[0031] 6. Second cylinder; 61. Push plate;

[0032] 7. Conveyor;

[0033] 8. first guide rail; 81. first slider;

[0034] 9. Second guide rail; 91. Second slider. DETAILED DESCRIPTION

[0035] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0036] Please refer to Figures 1 to 4 , a sealing and cutting mechanism for a packaging bag to avoid heat-sealed edge sticking, comprising:

[0037] Base 1;

[0038] A heat sealing mechanism 2, the hot air mechanism is connected to the base 1, and the heat sealing mechanism 2 includes two stacked first heat sealing devices 21 and a second heat sealing device 22;

[0039] The first heat sealing edge device 21 includes a first fixed seat 211, a spring 212, a pin 213, a first heat sealing plate 214, a cutting tool 215, and a first push plate 216. The first fixed seat 211 is movably connected to the base 1 along the X direction. The first fixed seat 211 is provided with a through hole for sliding cooperation with the pin 213. The pin 213 passes through the through hole and is connected to the first heat sealing plate 214. The spring 212 is sleeved on the pin 213. The spring 212 is located between the first fixed seat 211 and the first heat sealing plate 214. The first heat sealing plate 214 is provided with a strip groove, and the groove direction faces the X direction. The cutting tool 215 is located in the first strip groove 2141. The cutting tool 215 is connected to the first fixed seat 211. The first push plate 216 is movably connected to the base 1 along the X direction. The first push plate 216 is located below the first heat sealing plate 214.

[0040] A first driving mechanism 3, the first driving mechanism 3 is used to move the first fixed seat 211 and the first push plate 216;

[0041] The second heat sealing edge device 22 comprises a second heat sealing plate 222, a second fixed seat 221 and a second push plate 223, the second fixed seat 221 is movably connected to the base 1 along the X direction, the second heat sealing plate 222 is connected to the second fixed seat 221, the second heat sealing plate 222 is provided with a second strip groove 2221 matching the notch of the first strip groove 2141, the second push plate 223 is movably connected to along the X direction, and the second push plate 223 is located below the second heat sealing plate 222;

[0042] A second driving mechanism 4, the second driving mechanism 4 is used to drive the second fixed seat 221 and the second push plate 223 to move;

[0043] The first driving mechanism 3 drives the first fixed seat 211 and the first push plate 216 to switch between the first state and the second state;

[0044] The second driving mechanism 4 drives the second fixing seat 221 and the second stripping plate to switch between the second state and the first state;

[0045] In the first state, the first heat sealing plate 214 is in contact with the second heat sealing plate 222, the cutting tool 215 is located in the second strip groove 2221, the first push plate 216 is located on the X-direction side of the first heat sealing plate 214, and the second push plate 223 is located on the X-direction opposite side of the second heat sealing plate 222;

[0046] In the second state, the first heat sealing plate 214 is away from the second heat sealing plate 222, the cutting tool 215 is located in the first strip groove 2141, the first push plate 216 is located on the opposite side of the first heat sealing plate 214 in the X direction, and the second push plate 223 is located on the X side of the second heat sealing plate 222;

[0047] In the above embodiment, the packaging bag to be sealed is placed between the first heat-sealing edge plate and the second heat-sealing edge plate, and then the first driving mechanism 3 drives the first heat-sealing plate 214 to move in the opposite direction of the X direction, and the second driving mechanism 4 drives the second heat-sealing plate 222 to move in the X direction, and the first heat-sealing plate 214 contacts the second heat-sealing plate 222, and the cutting tool 215 is located in the second strip groove 2221, so that the first heat-sealing plate 214 and the second heat-sealing plate 222 heat-seal and cut the packaging bag, and at the same time, the first push plate 216 moves in the X direction, and the second push plate 223 moves in the opposite direction of the X direction. When the cutting is completed, the first heat-sealing plate 214 is in contact with the second heat-sealing plate 222, and the cutting tool 215 is located in the second strip groove 2221, so that the first heat-sealing plate 214 and the second heat-sealing plate 222 perform heat-sealing and cutting on the packaging bag. 214 moves in the opposite direction of the X direction, and the first pushing plate 216 moves in the X direction. If the first packaging bag adheres to the first heat sealing plate 214, the first pushing plate 216 can push down the packaging bag adhered to the first heat sealing plate 214. Similarly, the second heat sealing plate 222 moves in the X direction, and the first pushing plate 216 moves in the opposite direction of the X direction. If the second packaging bag adheres to the second heat sealing plate 222, the second pushing plate 223 can push down the packaging bag adhered to the first heat sealing plate 214. Compared with the prior art, it can prevent the packaging bag from adhering to the heat sealing device after cutting, thereby improving the edge sealing efficiency of the packaging bag.

[0048] As an optional embodiment, the first driving mechanism 3 includes a first connecting column, a second connecting column, a first connecting rod 33, a second connecting rod 34, a third connecting rod 35 and a first cylinder 36. The middle part of the first connecting rod 33 is pivoted to the base 1 through a first pivot shaft 331, one end of the second connecting rod 34 is pivoted to one end of the first connecting rod 33 through a second pivot shaft 332, the cylinder body of the first cylinder 36 is pivoted to the base 1 through a third pivot shaft 361, the third pivot shaft 361 is located on the X-direction side of the second pivot shaft 332, the piston rod of the first cylinder 36 is pivoted to one end of the first connecting rod 33 through the second pivot shaft 332, and one end of the third connecting rod 35 is pivoted to the other end of the first connecting rod 33 through a fourth pivot shaft 333 Pivoted, the fourth pivot axis 333 is located below the second pivot axis 332, one end of the first connecting column is pivoted to the other end of the second connecting rod 34 through the fifth pivot axis 311, the fifth pivot axis 311 is located on the X-direction opposite side of the second pivot axis 332, the first fixed seat 211 is connected to the other end of the first connecting column, one end of the second connecting column is pivoted to the other end of the third connecting rod 35 through the sixth pivot axis 321, the sixth pivot axis 321 is located below the fifth pivot axis 311, the first push plate 216 is connected to the other end of the second connecting column, the axial directions of the first pivot axis 331, the second pivot axis 332, the third pivot axis 361, the fourth pivot axis 333, the fifth pivot axis 311 and the sixth pivot axis 321 are all Y-direction.

[0049] In the above embodiment, the piston rod of the first cylinder 36 extends in the opposite direction of the X direction, so that the first connecting rod 33 swings clockwise along the axial axis, so that the second connecting rod 34 drives the first limiting column 31 to move in the opposite direction along the X direction, and the third connecting rod 35 drives the second limiting column 32 to move in the X direction, and then the first heat sealing plate 214 moves in the opposite direction of the X direction, and the first pushing plate 216 moves in the X direction. When the piston rod of the first cylinder 36 retracts in the X direction, the first connecting rod 33 swings counterclockwise along the axial axis, so that the second connecting rod 34 drives the first limiting column 31 to move in the X direction, and the third connecting rod 35 drives the second limiting column 32 to move in the opposite direction along the X direction, and then the first heat sealing plate 214 moves in the X direction, and the first pushing plate 216 moves in the opposite direction of the X direction to push the packaging bag of the first heat sealing plate 214 down.

[0050] As an optional implementation, the second driving mechanism 4 and the first driving mechanism 3 have the same structure and are symmetrically arranged.

[0051] As an optional embodiment, the sealing and cutting mechanism of the packaging bag to avoid heat-sealed edge sticking also includes a collecting box 5. In the first state, the collecting box is located below the first heat-sealing plate 214 and the second heat-sealing plate 222.

[0052] In the above embodiment, the packaging bag after heat sealing and cutting falls into the collection box 5 by free fall.

[0053] As an optional embodiment, the collecting box 5 is provided with a through opening in the Y direction, the base 1 is provided with a second cylinder 6, the cylinder body of the second cylinder 6 is connected to the base 1, the axial direction of the second cylinder 6 is in the Y direction, and a push plate 61 is provided on the piston rod of the second cylinder 6. The push plate 61 is located in the collecting box 5, and the shape and size of the push plate 61 match the opening. A conveyor 7 is provided at the opening on the opposite side of the Y direction, and the belt surface of the conveyor 7 is located below the opening on the opposite side of the Y direction.

[0054] In the above embodiment, after the packaging bags in the collection box 5 are collected for a period of time, the push plate 61 of the second cylinder 6 is used to push the packaging bags onto the belt surface of the conveyor 7, and the packaging bags continue to be transported to the next process along the conveyor belt.

[0055] As an optional embodiment, a first guide rail 8 along the X direction is provided on the base 1, and the first guide rail 8 is located on the Y side of the heat sealing mechanism 2. A first slider 81 is provided on the first limiting column 31, and the first slider 81 is slidably connected to the first guide rail 8. A second guide rail 9 along the X direction is provided on the base 1, and the second guide rail 9 is located below the first guide rail 8. A second slider 91 is provided on the second limiting column 32, and the second slider 91 is slidably connected to the second guide rail 9.

[0056] In the above embodiment, by providing the first guide rail 8 and the first slider 81, the first limiting column 31 can be ensured to move stably along the X direction without deviation, and the second guide rail 9 and the second slider 91 can be provided to ensure the second limiting column 32 can be ensured to move stably along the X direction without deviation.

[0057] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A sealing and cutting mechanism for a packaging bag to avoid heat-sealed edges sticking to the bag, characterized in that: include: Pedestal; The heat sealing mechanism is connected to the base, and the heat sealing mechanism includes two first heat sealing devices and a second heat sealing device which are stacked and arranged; The first heat sealing edge device includes a first fixed seat, a spring, a pin shaft, a first heat sealing plate, a cutting tool, and a first push plate. The first fixed seat is movably connected to the base along the X direction. The first fixed seat is provided with a through hole for sliding cooperation with the pin shaft. The pin shaft passes through the through hole and is connected to the first heat sealing plate. The spring is sleeved on the pin shaft. The spring is located between the first fixed seat and the first heat sealing plate. The first heat sealing plate is provided with a first strip groove, and the groove direction faces the opposite direction of the X direction. The cutting tool is located in the first strip groove, and the cutting tool is connected to the first fixed seat. The first push plate is movably connected to the base along the X direction, and the first push plate is located below the first heat sealing plate. A first driving mechanism, the first driving mechanism is used to move the first fixed seat and the first push plate; The second heat sealing edge device comprises a second heat sealing plate, a second fixed seat and a second push plate, the second fixed seat is movably connected to the base along the X direction, the second heat sealing plate is connected to the second fixed seat, the second heat sealing plate is provided with a second strip groove matching the notch of the first strip groove, the second push plate is movably connected to along the X direction, and the second push plate is located below the second heat sealing plate; A second driving mechanism, the second driving mechanism is used to drive the second fixed seat and the second push plate to move; The first driving mechanism drives the first fixed seat and the first push plate to switch between the first state and the second state; The second driving mechanism drives the second fixing seat and the second stripping plate to switch between the second state and the first state; In the first state, the first heat sealing plate is in contact with the second heat sealing plate, the cutting tool is located in the second strip groove, the first push plate is located on one side of the first heat sealing plate in the X direction, and the second push plate is located on the opposite side of the second heat sealing plate in the X direction; In the second state, the first heat sealing plate is away from the second heat sealing plate, the cutting tool is located in the first strip groove, the first push plate is located on the opposite side of the first heat sealing plate in the X direction, and the second push plate is located on the X side of the second heat sealing plate.

2. The sealing and cutting mechanism for packaging bags to avoid heat-sealed edge sticking according to claim 1, characterized in that: The first driving mechanism includes a first connecting column, a second connecting column, a first connecting rod, a second connecting rod, a third connecting rod and a first cylinder. The middle part of the first connecting rod is pivoted to the base through a first pivot axis, one end of the second connecting rod is pivoted to one end of the first connecting rod through a second pivot axis, the cylinder body of the first cylinder is pivoted to the base through a third pivot axis, the third pivot axis is located on one side of the second pivot axis in the X direction, the piston rod of the first cylinder is pivoted to one end of the first connecting rod through the second pivot axis, one end of the third connecting rod is pivoted to the other end of the first connecting rod through a fourth pivot axis, and the The four pivot axes are located below the second pivot axis, one end of the first connecting column is pivoted to the other end of the second connecting rod through the fifth pivot axis, the fifth pivot axis is located on the opposite side of the second pivot axis in the X direction, the first fixed seat is connected to the other end of the first connecting column, one end of the second connecting column is pivoted to the other end of the third connecting rod through the sixth pivot axis, the sixth pivot axis is located below the fifth pivot axis, the first push plate is connected to the other end of the second connecting column, and the axial directions of the first pivot axis, the second pivot axis, the third pivot axis, the fourth pivot axis, the fifth pivot axis and the sixth pivot axis are all in the Y direction.

3. The sealing and cutting mechanism for packaging bags to avoid heat-sealed edge sticking according to claim 1, characterized in that: The second driving mechanism has the same structure as the first driving mechanism and is symmetrically arranged.

4. The sealing and cutting mechanism for packaging bags to avoid heat-sealed edge sticking according to claim 1, characterized in that: The sealing and cutting mechanism of the packaging bag to avoid the heat-sealed edge sticking of the bag also includes a collecting box. In the first state, the collecting box is located below the first heat-sealing plate and the second heat-sealing plate.

5. The sealing and cutting mechanism for packaging bags to avoid heat-sealed edge sticking according to claim 1, characterized in that: A through opening is provided in the Y direction of the collecting box, a second cylinder is provided on the base, a cylinder body of the second cylinder is connected to the base, the axial direction of the second cylinder is in the Y direction, a push plate is provided on the piston rod of the second cylinder, the push plate is located in the collecting box, the shape and size of the push plate match the opening, a conveyor is provided in the opening on the opposite side of the Y direction, and the belt surface of the conveyor is located below the opening on the opposite side of the Y direction.

6. The sealing and cutting mechanism for packaging bags to avoid heat-sealed edge sticking according to claim 2, characterized in that: A first guide rail along the X direction is provided on the base, the first guide rail is located on the Y direction side of the heat sealing mechanism, a first slider is provided on the first limiting column, the first slider is slidably connected to the first guide rail, a second guide rail along the X direction is provided on the base, the second guide rail is located below the first guide rail, a second slider is provided on the second limiting column, and the second slider is slidably connected to the second guide rail.

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