A strip bag follow-up longitudinal sealing mechanism and strip bag machine

Abstract

A strip bag follow-up longitudinal sealing mechanism and strip bag machine include a frame, a follow-up lifting module, and a longitudinal sealing module. One or more longitudinal sealing modules are connected to the follow-up lifting module. The longitudinal sealing module includes a mounting frame, a longitudinal sealing drive assembly, a first longitudinal sealing clamp, a first hot stamping block, a second longitudinal sealing clamp, and a second hot stamping block. The first and second longitudinal sealing clamps are mounted on the mounting frame at their midpoints via a rotating shaft, so that the first and second longitudinal sealing clamps form a lever structure with the rotating shaft as a fulcrum. The first and second hot stamping blocks are respectively fixed to the second ends of the first and second longitudinal sealing clamps. The longitudinal sealing drive assembly includes a cylinder and a push block. The push block, driven by the cylinder, enters between the first ends of the first and second longitudinal sealing clamps, bringing the two hot stamping blocks closer together for heat sealing. The present invention enables continuous strip bag production without pausing, thereby increasing production speed, preventing damage to the strip bags during heat sealing, and is easy to adjust and compact in overall structure.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging equipment, and in particular to a strip pack follower longitudinal sealing mechanism and a strip packing machine. Background Art

[0002] Strip bag machines are mainly used for packaging granular, powder and liquid materials. The main processes include conveying packaging film, guiding strip bag forming, sealing the longitudinal edges of strip bags, sealing the transverse edges of strip bags, filling materials, dividing strip bags, cutting easy-to-tear edges and rejecting defective products. Strip bag machines can package single-row strip bags at a time, and can also produce multiple rows of strip bags at a time. The longitudinal sealing mechanism of the strip bag is mainly used to heat seal the longitudinal edges of the formed strip bags. The current longitudinal sealing method of the strip bag generally relies on a hot stamping block for heat sealing, or one hot stamping block is fixed and the other is moved to compress or loosen the heat seal. There are problems such as incomplete heat sealing and poor heat sealing effect. The hot stamping block is too close to the strip bag, which can easily cause damage to the strip bag. In addition, the existing longitudinal sealing mechanism has a complex structure and a large size. For multi-row strip bag machines, there are layout difficulties. Moreover, the existing longitudinal sealing mechanism is generally fixed on the frame. When the strip bag film passes through, it clamps the longitudinal edge of the strip bag for longitudinal sealing. The strip bag needs to stay at the longitudinal sealing position, resulting in a discontinuous strip bag production process and a slow production speed. In addition, the strip bag will be pulled when passing through, affecting the quality of the strip bag. Summary of the Invention

[0003] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art and provide a strip bag follower longitudinal sealing mechanism which can produce strip bags without stopping, has good heat sealing effect and compact structure, and a strip bag machine using the follower longitudinal sealing mechanism.

[0004] The present invention is achieved through the following technical solutions:

[0005] The cam is connected to the lifting module and the lifting module is connected to the lifting module, and the lifting module is connected to the lifting module. The lifting module is driven by the lifting module and moves up and down along the frame; the lifting module comprises a mounting frame, a longitudinal sealing drive assembly, a first longitudinal sealing clamp, a first hot stamping block, a second longitudinal sealing clamp and a second hot stamping block, the longitudinal sealing drive assembly is mounted on the mounting frame, the first longitudinal sealing clamp and the second longitudinal sealing clamp are arranged opposite to each other, and the middle position of the two is mounted on the mounting frame through a rotating shaft, so that the first longitudinal sealing clamp and the second longitudinal sealing clamp form a lever structure with the rotating shaft as a fulcrum, the first longitudinal sealing clamp and the second longitudinal sealing clamp are both separated by the rotating shaft at two ends, respectively, and the first end of the first longitudinal sealing clamp is close to the second longitudinal sealing clamp. The first ends of the clamping blocks are opposite to each other, and the second end of the first longitudinal sealing clamping block is opposite to the second end of the second longitudinal sealing clamping block. When the first end of the first longitudinal sealing clamping block and the first end of the second longitudinal sealing clamping block move away from each other, the second end of the first longitudinal sealing clamping block and the second end of the second longitudinal sealing clamping block approach each other. When the first end of the first longitudinal sealing clamping block and the first end of the second longitudinal sealing clamping block approach each other, the second end of the first longitudinal sealing clamping block and the second end of the second longitudinal sealing clamping block move away from each other. The first hot stamping block is fixed to the second end of the first longitudinal sealing clamping block, and the second hot stamping block is fixed to the second end of the second longitudinal sealing clamping block. The longitudinal sealing drive assembly is arranged at the first ends of the first longitudinal sealing clamping block and the second longitudinal sealing clamping block, and is used to drive the first end of the first longitudinal sealing clamping block and the first end of the second longitudinal sealing clamping block to move away from each other, so that the first hot stamping block and the second hot stamping block approach each other, thereby longitudinally sealing the strip package.

[0006] Furthermore, the longitudinal sealing drive assembly includes a cylinder and a push block, the cylinder is installed on the frame, the push block is fixed on the telescopic end of the cylinder, and is located in the middle position between the first end of the first longitudinal sealing clamp block and the first end of the second longitudinal sealing clamp block. Under the push of the cylinder, the push block enters between the first end of the first longitudinal sealing clamp block and the first end of the second longitudinal sealing clamp block, thereby making the first end of the first longitudinal sealing clamp block and the first end of the second longitudinal sealing clamp block move away from each other, and the first hot stamping block and the second hot stamping block approach each other to clamp the longitudinal seal.

[0007] Furthermore, the front end of the push block is triangular in cross section, and the two sides of the front triangle are in contact with the first end of the first longitudinal sealing clamp and the first end of the second longitudinal sealing clamp respectively. As the cylinder pushes, the first end of the first longitudinal sealing clamp and the first end of the second longitudinal sealing clamp slide along the two sides of the front triangle of the push block and gradually move away from each other. Adjustable clamping force

[0008] Furthermore, a connecting column is provided on the first end of the first longitudinal sealing block and the first end of the second longitudinal sealing block, and rollers are installed on the connecting column that can roll in contact with the two sides of the front end triangle of the push block. The two sides of the front end triangle of the push block respectively roll between the two rollers to gradually move the first end of the first longitudinal sealing block and the first end of the second longitudinal sealing block away from each other.

[0009] Furthermore, a return spring is connected between the first end of the first longitudinal sealing block and the first end of the second longitudinal sealing block. The return spring uses elastic restoring force to bring the first end of the first longitudinal sealing block and the first end of the second longitudinal sealing block closer to each other, thereby causing the second end of the first longitudinal sealing block and the second end of the second longitudinal sealing block to move away from each other, and the first hot stamping block and the second hot stamping block to separate from each other, completing the longitudinal sealing.

[0010] Furthermore, a protrusion extending outward is provided at the edge of the middle position of the first longitudinal sealing clamping block and the second longitudinal sealing clamping block, and the rotating shaft is connected to the protrusion.

[0011] Furthermore, the follow-up lifting module includes a driving motor, a driving wheel, a driven wheel and a toothed belt. The driving motor, the driving wheel and the driven wheel are installed on the frame. The two driven wheels are arranged opposite to each other up and down. The toothed belt is wrapped around the driving wheel and the driven wheel. The mounting frame is connected to the vertical gear belt between the two driven wheels. The driving motor drives the mounting frame on the toothed belt to move up and down, thereby driving the longitudinal sealing module to follow up and down along the frame.

[0012] Furthermore, the longitudinal sealing modules are arranged in several groups side by side along the frame, and the mounting frames on the several groups of longitudinal sealing modules are fixed side by side on the connecting frame. The connecting frame is connected to the follow-up lifting module, and the connecting frame drives the several groups of longitudinal sealing modules to rise and fall synchronously under the drive of the follow-up lifting module.

[0013] Furthermore, the connecting frame is provided with a slider, and the frame is provided with a slide rail adapted to the slider, and the connecting frame is lifted and lowered along the frame through the cooperation between the slider and the slide rail.

[0014] A strip bag machine adopts the above-mentioned strip bag follower longitudinal sealing mechanism and also includes a strip bag guiding and forming module. The strip bag guiding and forming module is used to guide the strip bag film into a strip bag shape and produce longitudinal edges. The strip bag guiding and forming module is fixed on the frame and is positioned opposite to the longitudinal sealing module to facilitate the longitudinal sealing module to perform follow-up longitudinal sealing on the longitudinal edges of the strip bag.

[0015] The present invention is provided with a follow-up lifting module to drive the longitudinal sealing module to rise and fall, so that the longitudinal sealing module can descend together with the strip packaging film, and is longitudinally sealed synchronously during the follow-up, so that the strip packaging can be continuously operated without pausing during strip packaging production, thereby improving the production speed, avoiding the pulling problem caused by sudden start-up during the strip packaging production process, and improving the quality of the strip packaging; two longitudinal sealing clamping blocks with a lever structure are provided on the longitudinal sealing module, and the two longitudinal sealing clamping blocks are driven to approach each other in a cam manner, so that the two hot stamping blocks press the longitudinal edges of the strip packaging for longitudinal sealing; the lever structure can make the two hot stamping blocks move closer or farther away synchronously, and the opened opening is larger, which can be away from the strip packaging film to avoid scalding the strip packaging; the cam drive structure can make the overall structure compact, which is convenient for side-by-side layout on a multi-row strip packaging machine; the triangular push block structure can adjust the pressing force during longitudinal sealing by adjusting the stroke size of the push block, which is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the structure of an embodiment of the present invention.

[0017] Figure 2 It is a schematic diagram of the front structure of an embodiment of the present invention.

[0018] Figure 3 It is a schematic side structural diagram of an embodiment of the present invention.

[0019] Figure 4 for Figure 2 Cross-sectional view in the AA direction.

[0020] Figure 5 Schematic diagram of the structural layout of multiple groups of vertical sealing modules in an embodiment of the present invention.

[0021] Figure 6 Schematic diagram of the structure of the longitudinal sealing module in the clamping state in an embodiment of the present invention.

[0022] Figure 7 Schematic top view of the clamped state of the longitudinal sealing module in an embodiment of the present invention.

[0023] Figure 8 It is a side view schematic diagram of the clamping state of the longitudinal sealing module in an embodiment of the present invention.

[0024] Figure 9 for Figure 8 Stereoscopic cross-sectional view in the middle BB direction.

[0025] Figure 10 for Figure 8 Plane cross-sectional view along the BB direction.

[0026] Figure 11 This is a structural diagram of the longitudinal sealing module in the open state in an embodiment of the present invention.

[0027] Figure 12This is a schematic top view of the longitudinal sealing module in the open state according to an embodiment of the present invention.

[0028] Figure 13 This is a side view of the longitudinal sealing module in the open state according to an embodiment of the present invention.

[0029] Figure 14 for Figure 13 Stereoscopic cross-sectional view in the CC direction.

[0030] Figure 15 for Figure 13 Plane section view in the CC direction.

[0031] Figure numerals: 1-frame; 2-follow-up lifting module; 3-longitudinal sealing module; 4-connecting frame; 10-bale guiding and forming module; 11-slide rail; 21-driving motor; 22-driving wheel; 23-driven wheel; 24-toothed belt; 31-mounting frame; 32-cylinder; 33-push block; 34-first longitudinal sealing clamping block; 35-first hot stamping block; 36-second longitudinal sealing clamping block; 37-second hot stamping block; 38-return spring; 311-rotating shaft; 341-first roller; 342-first connecting column; 343-first protrusion; 361-second roller; 362-second connecting column; 351-first heating tube; 371-second heating tube; 41-slider. DETAILED DESCRIPTION

[0032] A strip package follower longitudinal sealing mechanism, such as Figures 1 to 4 , including a frame 1, a follow-up lifting module 2 and a longitudinal sealing module 3. The follow-up lifting module 2 is installed on the frame 1, and the longitudinal sealing module 3 is connected to the follow-up lifting module 2. The longitudinal sealing module 3 is lifted and lowered along the frame 1 under the drive of the follow-up lifting module 2.

[0033] The longitudinal sealing module 3 is used to heat seal the longitudinal edges of the strip packs. Setting a single longitudinal sealing module 3 can longitudinally seal a single row of strip packs, which is suitable for a single row strip packing machine. In this embodiment, Figure 1 、 Figure 2 、 Figure 5 Multiple groups of longitudinal sealing modules 3 are arranged side by side along the frame 1 to accommodate the production of multiple rows of strip bags. The longitudinal sealing modules 3 have a compact structure. Specifically, several groups of mounting brackets 31 on the longitudinal sealing modules 3 are fixed side by side on a connecting frame 4. The connecting frame 4 is connected to the follower lifting module 2. Driven by the follower lifting module 2, the connecting frame 4 drives the multiple groups of longitudinal sealing modules 3 to rise and fall synchronously. The connecting frame 4 is equipped with a slider 41, and the frame 1 is equipped with a slide rail 11 that matches the slider 41. The connecting frame 4 rises and falls along the frame 1 through the cooperation of the slider 41 and the slide rail 11.

[0034] like Figures 6 to 15As shown, the longitudinal sealing module 3 includes a mounting frame 31, a longitudinal sealing drive assembly, a first longitudinal sealing clamp 34, a first hot stamping block 35, a second longitudinal sealing clamp 36 and a second hot stamping block 37. The longitudinal sealing drive assembly is mounted on the mounting frame 31. The first longitudinal sealing clamp 34 and the second longitudinal sealing clamp 36 are arranged opposite to each other. Figure 10 、 Figure 15 The middle positions of the two are mounted on the mounting frame 31 via a rotating shaft 311, so that the first longitudinal sealing clamp 34 and the second longitudinal sealing clamp 36 form a lever structure with the rotating shaft 311 as a fulcrum. The first longitudinal sealing clamp 34 and the second longitudinal sealing clamp 36 have a first end and a second end respectively separated by the rotating shaft 311, and the first end of the first longitudinal sealing clamp 34 is opposite to the first end of the second longitudinal sealing clamp 36, and the second end of the first longitudinal sealing clamp 34 is opposite to the second end of the second longitudinal sealing clamp 36. Figures 6 to 10 When the first end of the first longitudinal sealing clamp block 34 and the first end of the second longitudinal sealing clamp block 36 are away from each other, the second end of the first longitudinal sealing clamp block 34 and the second end of the second longitudinal sealing clamp block 36 are close to each other. Figures 11 to 15 When the first end of the first longitudinal sealing block 34 and the first end of the second longitudinal sealing block 36 approach each other, the second end of the first longitudinal sealing block 34 and the second end of the second longitudinal sealing block 36 separate from each other. The first hot stamping block 35 is fixed to the second end of the first longitudinal sealing block 34, and the second hot stamping block 37 is fixed to the second end of the second longitudinal sealing block 36. The longitudinal sealing drive assembly is disposed at the first ends of the first and second longitudinal sealing blocks 34, 36 and is used to drive the first end of the first longitudinal sealing block 34 and the first end of the second longitudinal sealing block 36 away from each other, so that the second end of the first longitudinal sealing block 34 and the second end of the second longitudinal sealing block 36 approach each other, and the first hot stamping block 35 and the second hot stamping block 37 approach each other, thereby longitudinally sealing the strip bag. The first and second hot stamping blocks 35, 37 are both equipped with heating tubes, namely the first heating tube 351 and the second heating tube 371.

[0035] In order to make the first longitudinal sealing clamp 34 and the second longitudinal sealing clamp 36 form a lever structure with one end open and the other end closed, in this embodiment, Figure 10 、 Figure 15 The first and second longitudinal sealing blocks 34, 36 are each provided with an outwardly extending protrusion at the edge of the middle position, namely a first protrusion 343 and a second protrusion. The rotating shaft 311 is connected to the protrusions, and the protrusions on the first and second longitudinal sealing blocks 34, 36 are mounted on the same rotating shaft 311. The first and second longitudinal sealing blocks 34, 36 can be designed with a bent structure having a certain angle.

[0036] The longitudinal sealing module 3 of the present invention can be raised and lowered by the follower lifting module 2, sealing the longitudinal edges simultaneously with the descending of the strip film. This avoids pauses during strip film production and improves production speed. The structure of the longitudinal sealing module 3 allows the two hot blocks to be spread apart and away from the strip film when not sealing. The large opening minimizes impact on the strip film, preventing heat radiation damage to the strip film, and provides a compact overall structure.

[0037] The function of the longitudinal sealing drive assembly is to move the first end of the first longitudinal sealing clamp 34 and the first end of the second longitudinal sealing clamp 36 away from each other. This can be achieved by using a cylinder 32 to push the two ends apart. In this embodiment, the longitudinal sealing drive assembly includes a cylinder 32 and a push block 33. The cylinder 32 is mounted on the frame 1. The push block 33 is fixed to the telescopic end of the cylinder 32 and is located midway between the first end of the first longitudinal sealing clamp 34 and the first end of the second longitudinal sealing clamp 36. Driven by the cylinder 32, the push block 33 enters between the first end of the first longitudinal sealing clamp 34 and the first end of the second longitudinal sealing clamp 36, thereby moving the first end of the first longitudinal sealing clamp 34 and the first end of the second longitudinal sealing clamp 36 away from each other and bringing the first hot stamping block 35 and the second hot stamping block 37 closer together to clamp the longitudinal seal.

[0038] In one embodiment, the front end of the push block 33 has a triangular cross-section, with the two sides of the triangle contacting the first end of the first longitudinal sealing block 34 and the first end of the second longitudinal sealing block 36, respectively. As the cylinder 32 pushes, the first ends of the first and second longitudinal sealing blocks 34, 36 slide along the two sides of the triangle at the front end of the push block 33, gradually moving away from each other. This structure ensures smooth movement of the first and second longitudinal sealing blocks 34, 36, and allows the pressing force between the first and second hot stamping blocks 35, 37 to be adjusted by adjusting the travel of the push block 33.

[0039] To smoothly propel the push block 33, rollers are mounted on the first end of the first longitudinal sealing block 34 and the first end of the second longitudinal sealing block 36, respectively, to contact and roll against the two sides of the triangular front end of the push block 33. The two sides of the triangular front end of the push block 33 roll against the first rollers 341 and the second rollers 361, respectively, gradually moving the first end of the first longitudinal sealing block 34 and the first end of the second longitudinal sealing block 36 away from each other. In this embodiment, the first and second longitudinal sealing blocks 34 and 36 are both equipped with connecting posts, respectively, a first connecting post 342 and a second connecting post 362. The first roller 341 and the second roller 361 are mounted on the first connecting post 342 and the second connecting post 362, respectively.

[0040] In order to separate the first and second hot-sealing blocks 35 and 37 after heat sealing, a return structure is required, such as a tension spring or other elastic member disposed at the position of the rotating shaft 311. In this embodiment, a return spring 38 is connected between the first end of the first longitudinal sealing clamp 34 and the first end of the second longitudinal sealing clamp 36. The return spring 38 uses its elastic restoring force to pull the first end of the first longitudinal sealing clamp 34 and the first end of the second longitudinal sealing clamp 36 closer together, thereby moving the second end of the first longitudinal sealing clamp 34 and the second end of the second longitudinal sealing clamp 36 away from each other, separating the first and second hot-sealing blocks 35 and 37, and completing the longitudinal sealing.

[0041] The function of the follow-up lifting module 2 is to drive the vertical sealing module 3 to move up and down, and it can be a commonly used lifting drive structure, such as a structure in which a motor drives a lead screw. Figure 3 、 Figure 4 The follow-up lifting module 2 includes a driving motor 21, a driving wheel 22, a driven wheel 23 and a toothed belt 24. The driving motor 21, the driving wheel 22 and the driven wheel 23 are installed on the frame 1. The two driven wheels 23 are arranged opposite to each other up and down. The toothed belt 24 is wrapped around the driving wheel 22 and the driven wheel 23. The mounting frame 31 is fixed on the vertical gear belt between the two driven wheels 23. The driving motor 21 drives the mounting frame 31 on the toothed belt 24 to move up and down, thereby driving the longitudinal sealing module 3 to follow up and down along the frame 1.

[0042] A strip packing machine adopts the strip pack follower longitudinal sealing mechanism, such as Figures 1 to 4 The machine also includes a strip bag guiding and forming module 10, which is used to guide the strip bag film into the strip bag shape and produce longitudinal edges. The strip bag guiding and forming module 10 is fixed to the frame 1 and positioned opposite the longitudinal sealing module 3, facilitating the longitudinal sealing of the strip bags by the longitudinal sealing module 3. If multiple rows of strip bags are produced, multiple groups of strip bag guiding and forming modules 10 are also provided.

[0043] The above detailed description is a specific description of a feasible embodiment of the present invention. The embodiment is not intended to limit the patent scope of the present invention. Any equivalent implementation or modification that does not depart from the present invention should be included in the patent scope of this case.

Claims

1. A strip package follower longitudinal sealing mechanism, characterized in that: The cam is connected to the lifting module and the lifting module is connected to the lifting module. The lifting module is driven by the lifting module and moves up and down along the frame. The cam comprises a mounting frame, a longitudinal sealing drive assembly, a first longitudinal sealing clamp, a first hot stamping block, a second longitudinal sealing clamp and a second hot stamping block. The longitudinal sealing drive assembly is mounted on the mounting frame. The first longitudinal sealing clamp and the second longitudinal sealing clamp are arranged opposite to each other. The middle position of the two is mounted on the mounting frame through a rotating shaft, so that the first longitudinal sealing clamp and the second longitudinal sealing clamp form a lever structure with the rotating shaft as a fulcrum. The first longitudinal sealing clamp and the second longitudinal sealing clamp are both separated by the rotating shaft at two ends, namely a first end and a second end, and the first end of the first longitudinal sealing clamp and the first end of the second longitudinal sealing clamp are opposite to each other. The second end of the first longitudinal sealing clamp is opposite to the second end of the second longitudinal sealing clamp. When the first end of the first longitudinal sealing clamp and the first end of the second longitudinal sealing clamp are away from each other, the second end of the first longitudinal sealing clamp and the second end of the second longitudinal sealing clamp are close to each other. When the first end of the first longitudinal sealing clamp and the first end of the second longitudinal sealing clamp are close to each other, the second end of the first longitudinal sealing clamp and the second end of the second longitudinal sealing clamp are separated from each other. The first hot stamping block is fixed to the second end of the first longitudinal sealing clamp, and the second hot stamping block is fixed to the second end of the second longitudinal sealing clamp. The longitudinal sealing drive assembly is provided at the first ends of the first and second longitudinal sealing clamps, and is used to drive the first end of the first longitudinal sealing clamp and the first end of the second longitudinal sealing clamp to move away from each other, so that the first hot stamping block and the second hot stamping block are close to each other, thereby longitudinally sealing the strip bag. The longitudinal sealing drive assembly includes a cylinder and a push block. The cylinder is mounted on the frame. The push block is fixed to the telescopic end of the cylinder and is located between the first end of the first longitudinal sealing clamping block and the first end of the second longitudinal sealing clamping block. The push block is pushed by the cylinder to enter between the first end of the first longitudinal sealing clamping block and the first end of the second longitudinal sealing clamping block, thereby moving the first end of the first longitudinal sealing clamping block and the first end of the second longitudinal sealing clamping block away from each other. The front end of the push block is triangular in cross section, and the two sides of the front end triangle are in contact with the first end of the first longitudinal sealing clamp block and the first end of the second longitudinal sealing clamp block respectively. The first end of the first longitudinal sealing clamp block and the first end of the second longitudinal sealing clamp block slide along the two sides of the front end triangle of the push block as the cylinder pushes them and gradually moves away from each other. A connecting column is provided on the first end of the first longitudinal sealing clamping block and the first end of the second longitudinal sealing clamping block, and rollers are installed on the connecting column and can roll with the two sides of the front triangle of the push block. The two sides of the front triangle of the push block roll with the two rollers, so that the first end of the first longitudinal sealing clamping block and the first end of the second longitudinal sealing clamping block gradually move away from each other. A return spring is connected between the first end of the first longitudinal sealing clamp and the first end of the second longitudinal sealing clamp. The return spring uses elastic restoring force to bring the first end of the first longitudinal sealing clamp and the first end of the second longitudinal sealing clamp closer to each other, thereby causing the second end of the first longitudinal sealing clamp and the second end of the second longitudinal sealing clamp to move away from each other, and the first hot stamping block and the second hot stamping block to separate from each other, thereby completing the longitudinal sealing.

2. A strip pack follower longitudinal sealing mechanism according to claim 1, characterized in that: A protruding portion extending outward is provided at the edges of the middle positions of the first longitudinal sealing clamping block and the second longitudinal sealing clamping block, and the rotating shaft is connected to the protruding portion.

3. The strip package follower longitudinal sealing mechanism according to claim 1, characterized in that: The follow-up lifting module includes a driving motor, a driving wheel, a driven wheel and a toothed belt. The driving motor, the driving wheel and the driven wheel are installed on the frame. The two driven wheels are arranged opposite to each other up and down. The toothed belt is wrapped around the driving wheel and the driven wheel. The mounting frame is connected to the vertical toothed belt between the two driven wheels. The driving motor drives the mounting frame on the toothed belt to move up and down, thereby driving the longitudinal sealing module to follow up and down along the frame.

4. The strip pack follower longitudinal sealing mechanism according to claim 1, characterized in that: The longitudinal sealing modules are arranged in several groups side by side along the frame. The mounting frames on the several groups of longitudinal sealing modules are fixed side by side on the connecting frame. The connecting frame is connected to the follow-up lifting module. The connecting frame drives the several groups of longitudinal sealing modules to rise and fall synchronously under the drive of the follow-up lifting module.

5. The strip package follower longitudinal sealing mechanism according to claim 4, characterized in that: The connecting frame is provided with a slider, and the frame is provided with a slide rail adapted to the slider. The connecting frame is lifted and lowered along the frame through the cooperation between the slider and the slide rail.

6. A stick packing machine, using the stick pack follower longitudinal sealing mechanism according to any one of claims 1 to 5, characterized in that: It also includes a strip package guiding and forming module, which is used to guide the strip package film into a strip package shape and produce longitudinal edges. The strip package guiding and forming module is fixed on the frame and is opposite to the longitudinal sealing module to facilitate the longitudinal sealing module to perform follow-up longitudinal sealing on the longitudinal edges of the strip package.

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