Edge sealing device of packaging machine and packaging machine

Abstract

The utility model discloses an edge sealing device of a packaging machine and the packaging machine, belongs to the field of packaging equipment, and is used for solving the problem that an existing packaging bag is deformed due to dragging in the edge sealing process, and the edge sealing device comprises a rack, a sealing assembly, a conveying mechanism and a driving mechanism; two groups of sealing assemblies are movably arranged on the rack; the front end and the rear end of the sealing assembly are each provided with one conveying mechanism, and the conveying mechanisms are provided with followers. The driving mechanism comprises two driving ends, the two driving ends drive the two sealing assemblies to seal the packaging bag, one driving end is provided with a track plate, the track plate is provided with two track grooves which are symmetrical left and right, and the two track grooves are connected with the followers on the two conveying mechanisms correspondingly so as to drive the two conveying mechanisms to synchronously and horizontally move in the same direction along with the sealing assemblies. According to the edge sealing device and the packaging machine, deformation caused by dragging in the sealing process of the packaging bag can be reduced, the packaging bag is sealed according to a preset shape, and the final packaging quality is improved.

Description

Technical Field

[0001] The utility model relates to the field of packaging equipment, and particularly relates to a side-sealing device of a packaging machine and a packaging machine. Background Art

[0002] A packaging machine usually seals the bag mouths at both ends of a packaging bag through a side-sealing device. In the related art, after the middle gap of the packaging bag is sealed, it is conveyed to the side-sealing device through a conveyor belt. The side-sealing device performs hot pressing on the end of the packaging bag through a hot-sealing member with a relatively high temperature to achieve hot sealing of the bag mouth. At the same time, a cutting knife cuts the middle of the hot-sealing area to separate the frontmost, sealed packaging bag from the continuous packaging bags, and the separated packaging bag is then output by the conveyor belt at the rear end.

[0003] In order to enable the packaging bag to be continuously conveyed forward during the side-sealing process to ensure the efficiency of conveying and packaging, the hot-sealing member and the cutting knife are usually controlled by a driving mechanism so that they can move horizontally while performing the upper and lower hot-sealing actions to drag the packaging bag forward. However, during the process of the hot-sealing member dragging the packaging bag, the positions of the conveyor belts at the front end and the rear end of the side-sealing device remain unchanged, and it is difficult to ensure that the speed at which the hot-sealing member drags the packaging bag is always the same as the conveying speed of the conveyor belt. In this way, the packaging bag is easily deformed due to dragging, so that the packaging bag cannot be sealed in a preset shape, affecting the final packaging quality.

[0004] It should be noted that the information disclosed in the above background art section is only used to enhance the understanding of the background of the present disclosure, and thus may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Invention

[0005] (1) Technical Problems to be Solved

[0006] The utility model provides a side-sealing device of a packaging machine and a packaging machine, and at least solves the technical problem of: how to reduce the deformation of the packaging bag caused by dragging during the side-sealing process, thereby improving the packaging quality.

[0007] (2) Technical Solutions

[0008] To solve the above technical problems, the utility model provides the following technical solutions:

[0009] A side-sealing device of a packaging machine includes:

[0010] A frame;

[0011] Two groups of sealing components are movably arranged on the frame;

[0012] Conveying mechanisms, one is arranged at the front end and the other is arranged at the rear end of the sealing component. The conveying mechanisms are connected to the frame through sliding structures so as to be able to slide relative to the frame in the horizontal direction, and the conveying mechanisms are provided with follower members;

[0013] The driving mechanism includes two driving ends respectively connected to two groups of sealing components. The two driving ends synchronously and reciprocally move along different circular trajectories in a vertical plane, and have the same moving direction in the horizontal direction and opposite moving directions in the height direction, so as to drive the two groups of sealing components to seal the packaging bag and synchronously drive the packaging bag forward;

[0014] The track plate is fixedly arranged on one of the driving ends. There are two symmetrically arranged track grooves on the track plate. The track grooves include a first vertical section, a second vertical section and a connecting section. The first vertical section and the second vertical section extend vertically and are distributed up and down, and are offset from each other in the horizontal position. The connecting section is smoothly connected between the first vertical section and the second vertical section. The two track grooves are respectively slidably connected to the followers on the two conveying mechanisms, so as to drive the two conveying mechanisms to horizontally move synchronously and in the same direction as the sealing components.

[0015] In some embodiments, the driving mechanism includes a driving motor, a first gear and a second gear. The first gear and the second gear are rotatably connected to the machine frame. The driving motor is drivingly connected to the first gear and the second gear for driving the first gear and the second gear to rotate synchronously and in opposite directions; One of the driving ends includes an upper swing arm, and the upper swing arm is connected to the eccentric part of the first gear and horizontally moves along the rotation trajectory of the eccentric part of the first gear in a vertical plane; The other driving end includes a lower swing arm, and the lower swing arm is connected to the eccentric part of the second gear and horizontally moves along the rotation trajectory of the eccentric part of the second gear in a vertical plane; The upper swing arm and the lower swing arm have the same moving direction in the horizontal direction and opposite moving directions in the height direction; The track plate is fixedly connected to the upper swing arm or the lower swing arm.

[0016] In some embodiments, the number of the first gears is two and they are arranged vertically; The upper swing arm is connected to the eccentric parts at the same position of the two first gears through a rotating shaft, so as to horizontally move along the rotation trajectory of the eccentric part of the first gear in a vertical plane.

[0017] In some embodiments, the two first gears are connected by a second gear, and the lower swing arm and the upper swing arm are connected by a guide rail structure. The guide rail structure is arranged vertically, so that the lower swing arm and the upper swing arm can only move relative to each other in the vertical direction.

[0018] In some embodiments, there are two sets of the first gear, the second gear, the upper swing arm, the lower swing arm and the track plate, and the two sets of the first gears and the second gears are drivingly connected; One of the sealing components is connected between the two sets of upper swing arms, and the other sealing component is connected between the two sets of lower swing arms.

[0019] In some embodiments, a roller is provided on the follower, and the roller is slidably connected to the inner side of the track groove.

[0020] In some embodiments, the sliding structure includes a linear slide rail and a linear slider that are slidably connected to each other. The linear slide rail and the linear slider are respectively provided on the frame and the conveying mechanism, and the linear slide rail extends along the conveying direction of the conveying mechanism.

[0021] In some embodiments, the conveying mechanism includes a bracket, a driving roller, and a belt. The bracket is connected to the frame through the sliding structure. At least two driving rollers are provided and are rotatably connected to the bracket. The belt is connected between the driving rollers; the follower is fixedly connected to the bracket.

[0022] The present utility model also provides a packaging machine, including the above-mentioned side sealing device.

[0023] (III) Beneficial effects

[0024] Compared with the prior art, the side sealing device and the packaging machine provided by the present utility model have the following beneficial effects:

[0025] When the side sealing device and the packaging machine work, the packaging bag is conveyed between the two sealing components by the conveying mechanism at the front end of the sealing component. Subsequently, the driving mechanism drives the two sealing components to move through two driving ends respectively, so that they approach each other, seal the bag mouth of the packaging bag between them, and drag it forward while sealing. During this process, the two conveying mechanisms slide in the track grooves of the two track plates through the followers respectively. Due to the structural design of the first vertical section, the second vertical section, and the connecting section of the track groove, the two conveying mechanisms can horizontally move synchronously and in the same direction with the sealing components. While the sealing components seal the packaging bag, the packaging bags at the front end and the rear end are conveyed synchronously, reducing the deformation of the packaging bag caused by dragging during the sealing process, enabling the packaging bag to be sealed in a preset shape, and improving the final packaging quality. Description of the drawings

[0026] Figure 1 It is a perspective view of the side sealing device of the packaging machine in the embodiment.

[0027] Figure 2 It is a side view of the side sealing device of the packaging machine in the embodiment.

[0028] Figure 3 It is a perspective view of the driving mechanism in the embodiment.

[0029] Figure 4 It is a front view of the driving mechanism in the embodiment.

[0030] Figure 5Schematic diagram of the cooperation between the track plate and the follower in the embodiment.

[0031] Figure 6 Schematic diagram of the sealing component in the embodiment.

[0032] Reference numerals:

[0033] Frame 1;

[0034] Sealing component 2, heat-sealing member 21, cutting knife 22;

[0035] Conveyor mechanism 3, support 31, driving roller 32, belt 33;

[0036] Driving mechanism 4, driving end 40, first gear 41, second gear 42, driving motor 43, upper swing arm 44, lower swing arm 45, guide groove 401, guide post 402;

[0037] Track plate 5, track groove 50, first vertical section 501, second vertical section 502, connecting section 503;

[0038] Sliding structure 6, linear slide rail 61, linear slider 62;

[0039] Follower 7, roller 70. Detailed implementation manners

[0040] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0041] During the process of the heat-sealing member of the existing packaging machine dragging the packaging bag, the positions of the front and rear conveyor belts remain unchanged, and it is difficult to ensure that the speed at which the heat-sealing member drags the packaging bag is always the same as the conveying speed of the conveyor belt. In this way, the packaging bag is easily deformed due to being dragged by the heat-sealing member, making it impossible to seal the packaging bag in the preset shape, thus affecting the final packaging quality.

[0042] To solve the above technical problems, this embodiment provides a side-sealing device for a packaging machine. Please refer to Figures 1 to 5 as shown, Figure 1 is a perspective view of the side-sealing device of the packaging machine in the embodiment, Figure 2 is a side view of the side-sealing device of the packaging machine in the embodiment, Figure 3 is a perspective view of the driving mechanism in the embodiment, Figure 4 is a front view of the driving mechanism in the embodiment, Figure 5 Schematic diagram of the cooperation between the track plate and the follower in the embodiment.

[0043] A side-sealing device for a packaging machine in this embodiment includes: a frame 1, a sealing component 2, a conveyor mechanism 3, a driving mechanism 4, and a track plate 5.

[0044] The frame 1 serves as the support foundation for the overall structure.

[0045] The sealing assemblies 2, two in number, are both movably arranged on the frame 1 and are used for sealing the openings of the packaging bags.

[0046] The conveying mechanisms 3, as shown in Figure 1 and Figure 2 , are two in number and are respectively arranged at the front end and the rear end of the two groups of sealing assemblies 2. Each conveying mechanism 3 is connected to the frame 1 through a sliding structure 6, so that the conveying mechanism 3 can slide horizontally relative to the frame 1. Each conveying mechanism 3 is provided with a follower 7 for moving following the driving mechanism 4.

[0047] The driving mechanism 4, as shown in Figure 1 and Figure 2 , has two driving ends 40. Each driving end 40 is respectively connected to a group of sealing assemblies 2. The two driving ends 40 move synchronously and reciprocally along different circular trajectories in the vertical plane, where the moving directions in the horizontal direction are the same, while the moving directions in the height direction are opposite, so as to drive the two groups of sealing assemblies 2 to perform the sealing operation of the packaging bags and synchronously drive the two groups of sealing assemblies 2 and the corresponding conveying mechanisms 3 to move horizontally; the driving mechanism 4 can use the reciprocating driving mechanism 4 for side sealing in the existing packaging machine, which will not be elaborated here.

[0048] The track plate 5, as shown in Figure 2 and Figure 5 , is fixedly arranged on one of the driving ends 40. There are two symmetrically arranged track grooves 50 on it. Each track groove 50 includes a first vertical section 501, a second vertical section 502 and a connecting section 503. The first vertical section 501 and the second vertical section 502 extend in the vertical direction and are distributed up and down, and are offset from each other in the horizontal position at the same time. The connecting section 503 is smoothly connected between the first vertical section 501 and the second vertical section 502. The two track grooves 50 are respectively slidably connected to the followers 7 on the two conveying mechanisms 3 to realize the synchronous and same-direction horizontal movement of the two conveying mechanisms 3 following the sealing assemblies 2.

[0049] When the edge sealing device of the above technical solution is working, the conveying mechanism 3 at the front end of the sealing assembly 2 conveys the packaging bag between the two groups of sealing assemblies 2. Subsequently, the driving mechanism 4 drives the two groups of sealing assemblies 2 to move through the two driving ends 40 respectively, making them approach each other to seal the bag mouth of the packaging bag between them, and dragging it forward while sealing. During this process, the two conveying mechanisms 3 slide in the track grooves 50 of the two track plates 5 through the follower members 7 respectively. Due to the structural design of the first vertical section 501, the second vertical section 502, and the connecting section 503 of the track groove 50, the two conveying mechanisms 3 can horizontally move synchronously and in the same direction with the sealing assembly 2. While the sealing assembly 2 seals the packaging bag, it conveys the packaging bags at the front end and the rear end synchronously. That is to say, the track plate 5 drives the two side conveying mechanisms 3 to follow through the track groove 50. The narrow part of the track groove 50 makes the front and rear conveying mechanisms 3 approach each other, so that the packaging bag can be smoothly conveyed from the middle end to the output conveying, reducing the deformation of the packaging bag caused by dragging during the sealing process, improving the stability of the packaging bag during the sealing process, enabling it to be sealed strictly according to the preset shape, thereby significantly improving the flatness and aesthetics of the packaging, and ultimately improving the overall packaging quality, meeting the market demand for high-quality packaging.

[0050] In one implementation of the above driving mechanism 4, refer to Figure 2 and Figure 3 As shown, the driving mechanism 4 includes a first gear 41, a second gear 42, and a driving motor 43. The first gear 41 and the second gear 42 are rotatably connected to the frame 1 through a rotating shaft. The driving motor 43 is connected to the first gear 41 and the second gear 42 through a gear transmission structure, a belt 33 transmission structure, and other transmission structures for driving the first gear 41 and the second gear 42 to rotate synchronously and in opposite directions. Of course, two driving mechanisms 4 can also be provided to drive the first gear 41 and the second gear 42 to rotate respectively; one of the driving ends 40 includes an upper swing arm 44, and the upper swing arm 44 is connected to the eccentric part of the first gear 41 through a rotating shaft and horizontally moves along the rotation track of the eccentric part of the first gear 41 in the vertical plane; the other driving end 40 includes a lower swing arm 45, and the lower swing arm 45 is connected to the eccentric part of the second gear 42 and horizontally moves along the rotation track of the eccentric part of the second gear 42 in the vertical plane; the horizontal moving directions of the upper swing arm 44 and the lower swing arm 45 are the same, and the moving directions in the height direction are opposite; the track plate 5 is fixedly connected to the upper swing arm 44 or the lower swing arm 45. It can be understood that the horizontal movement of the upper swing arm 44 and the lower swing arm 45 does not mean that they move on a horizontal line, but that they translate along the rotation tracks of the eccentric parts of the corresponding gears without self-rotation.

[0051] Exemplarily, refer to Figure 3 and Figure 5As shown, the track plate 5 is connected to the lower swing arm 45. At this time, the distance between the two second vertical segments 502 of the same track plate 5 is smaller than the distance between the two first vertical segments 501, and a V-shaped structure is formed between the two connecting segments 503.

[0052] It can be understood that when the track plate 5 is connected to the upper swing arm 44, the setting of the track groove 50 can be adjusted accordingly to meet the requirement of driving the conveying mechanism 3 to move horizontally and synchronously in the same direction.

[0053] Exemplarily, a guiding structure (not shown in the figure) of the upper swing arm 44 and the lower swing arm 45 can be provided on the frame 1, so that they can move horizontally with the gear without self-rotation.

[0054] Exemplarily, the horizontal movement of the above-mentioned upper swing arm 44 along the rotation track at the eccentric position of the first gear 41 in the vertical plane can also be achieved in the following way: Refer to Figure 2 and 3 As shown, the number of the first gears 41 is two and they are arranged vertically; the upper swing arm 44 is connected to the eccentric positions at the same positions of the two first gears 41 through a rotating shaft, so as to move horizontally along the rotation track at the eccentric position of the first gear 41 in the vertical plane, that is, the rotation of the upper swing arm 44 is restricted by the connecting rod and the first gear 41, so that it only has the freedom of movement along with the rotation of the gear.

[0055] Further, the horizontal movement of the lower swing arm 45 along the rotation track at the eccentric position of the second gear 42 in the vertical plane can be achieved in the following way: Refer to Figure 2 and 3 As shown, the two first gears 41 are connected by a second gear 42, and the lower swing arm 45 and the upper swing arm 44 are connected by a guide rail structure. The guide rail structure is arranged vertically, so that the lower swing arm 45 and the upper swing arm 44 can only move relative to each other in the vertical direction, that is, the rotation of the lower swing arm 45 is restricted by the guide rail structure, so that it can only move horizontally along the rotation track at the eccentric position of the second gear 42.

[0056] Exemplarily, refer to Figure 2 As shown, the above-mentioned guide rail structure includes a guide groove 401 opened on the upper swing arm 44 and a guide post 402 arranged on the lower swing arm 45. The guide groove 401 extends vertically, and the guide post 402 extends into the guide groove 401 and can slide up and down in the guide groove 401.

[0057] In order to improve the stability of the movement of the sealing assembly 2 and the conveying mechanism 3, refer to Figure 4 As shown, two sets of the first gear 41, the second gear 42, the upper swing arm 44, the lower swing arm 45 and the track plate 5 are symmetrically arranged, and the two sets of first gears 41 and the second gears 42 are connected by transmission; one sealing assembly 2 is connected between the two sets of upper swing arms 44, and the other sealing assembly 2 is connected between the two sets of lower swing arms 45.

[0058] In another embodiment of the above-mentioned driving mechanism 4, the driving mechanism 4 is realized by combining a horizontal driving mechanism and a lifting mechanism (not shown in the figure). The horizontal driving mechanism is installed on the frame 1 and connected to the lifting mechanism, and is used to drive the sealing component 2 to move horizontally. The lifting mechanism is connected to the sealing component 2 and is used to drive the sealing component 2 to close and open, so as to realize the sealing action and the action of dragging the packaging bag in combination.

[0059] In one embodiment of the above-mentioned follower 7 slidingly connected to the track groove 50, a roller 70 is provided on the follower 7 and is slidably connected to the inner side of the track groove 50 through the roller 70, and the roller 70 can improve the smoothness of the sliding.

[0060] In other embodiments of the above-mentioned follower 7 slidingly connected to the track groove 50, the follower 7 can also cooperate with the track groove 50 through a slider (not shown in the figure).

[0061] In one embodiment of the above-mentioned sliding structure 6, refer to Figure 2 As shown, the sliding structure 6 includes a linear slide rail 61 and a linear slider 62 that are slidably connected to each other. The linear slide rail 61 and the linear slider 62 are respectively provided on the frame 1 and the conveying mechanism 3, and the linear slide rail 61 extends along the conveying direction of the conveying mechanism 3.

[0062] Exemplarily, the linear slide rail 61 is fixed on the frame 1, and the linear slider 62 is fixed at the bottom of the bracket 31 of the conveying mechanism 3.

[0063] The above-mentioned conveying mechanism 3 can use existing belt 33, roller or chain plate conveying mechanism. The bracket of the conveying mechanism 3 is connected to the follower 7 and is connected to the frame 1 through the sliding structure 6. Exemplarily, refer to Figure 2 As shown, the conveying mechanism 3 includes a bracket 31, a driving roller 32 and a belt 33. The bracket 31 is connected to the frame 1 through the sliding structure 6. There are at least two driving rollers 32, which are rotatably connected to the bracket 31, and the belt 33 is connected between the driving rollers 32; the follower 7 is fixedly connected to the bracket 31 by means of bolts or welding.

[0064] The above-mentioned sealing component 2 can be selected from existing sealing components 2, ultrasonic welding components, etc. according to needs. Refer to Figure 6 As shown, Figure 6 It is a schematic diagram of the sealing component in the embodiment. When a heat-sealing component is selected, it mainly includes a heat-sealing member 21 and a cutter 22. When two groups of heat-sealing components 21 approach each other, the bag mouth is heat-sealed through the heat-sealing member 21, and the heat-sealing area is cut off through the cutter 22 to separate the packaging bag. The specific structure is the prior art and will not be elaborated here.

[0065] This embodiment provides a packaging machine. Refer to Figure 1As shown, including the above-mentioned side sealing device, through the application of the side sealing device, the packaging machine can reduce the deformation of the packaging bag caused by dragging during the sealing process, improve the stability of the packaging bag during the sealing process, enable it to be sealed strictly according to the preset shape, thereby significantly improving the flatness and aesthetics of the packaging, and ultimately improving the overall packaging quality to meet the market demand for high-quality packaging.

[0066] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A side sealing device for a packaging machine, characterized in that: include: frame; Sealing components, two groups of which are movably provided on the frame; A conveying mechanism, one of which is provided at the front end and the rear end of the sealing assembly, the conveying mechanism is connected to the frame via a sliding structure so as to be able to slide relative to the frame in a horizontal direction, and the conveying mechanism is provided with a follower; The driving mechanism comprises two driving ends respectively connected to the two sealing components, the two driving ends respectively move synchronously and reciprocatingly along different annular tracks in the vertical plane, and move in the same direction in the horizontal direction and in opposite directions in the height direction, so as to drive the two sealing components to seal the packaging bags and synchronously drive the packaging bags forward; A track plate is fixedly arranged on one of the driving ends, and is provided with two left-right symmetrical track grooves, and the track grooves include a first vertical section, a second vertical section and a connecting section, the first vertical section and the second vertical section extend vertically, and are distributed up and down, and are staggered with each other in horizontal positions, and the connecting section is smoothly connected between the first vertical section and the second vertical section, and the two track grooves are respectively slidably connected to the followers on the two conveying mechanisms to drive the two conveying mechanisms to move horizontally synchronously and in the same direction with the sealing assembly.

2. The edge sealing device of the packaging machine according to claim 1, characterized in that: The driving mechanism comprises a driving motor, a first gear and a second gear, wherein the first gear and the second gear are rotatably connected to the frame, and the driving motor is transmission-connected to the first gear and the second gear to drive the first gear and the second gear to rotate synchronously and in opposite directions; One driving end includes an upper swing arm, which is connected to the eccentricity of the first gear and moves horizontally along the rotation trajectory of the eccentricity of the first gear in a vertical plane; the other driving end includes a lower swing arm, which is connected to the eccentricity of the second gear and moves horizontally along the rotation trajectory of the eccentricity of the second gear in a vertical plane; the upper swing arm and the lower swing arm move in the same direction in the horizontal direction and in opposite directions in the height direction; the track plate is fixedly connected to the upper swing arm or the lower swing arm.

3. The edge sealing device of the packaging machine according to claim 2, characterized in that: There are two first gears, which are arranged vertically; the upper swing arm is connected to the eccentric parts of the same position of the two first gears through a rotating shaft so as to move horizontally along the rotation trajectory of the eccentric parts of the first gears in a vertical plane.

4. The edge sealing device of the packaging machine according to claim 3, characterized in that: The two first gears are connected via a second gear, the lower swing arm and the upper swing arm are connected via a guide rail structure, and the guide rail structure is vertically arranged so that the lower swing arm and the upper swing arm can only move relative to each other in the vertical direction.

5. The edge sealing device of the packaging machine according to claim 4, characterized in that: The first gear, the second gear, the upper swing arm, the lower swing arm and the track plate are symmetrically provided in two groups, and the two groups of the first gears and the second gears are transmission-connected; One of the sealing components is connected between the two groups of upper swing arms, and the other of the sealing components is connected between the two groups of lower swing arms.

6. The edge sealing device of the packaging machine according to claim 1, characterized in that: The follower is provided with a roller, and is slidably connected with the inner side of the track groove through the roller.

7. The edge sealing device of the packaging machine according to claim 1, characterized in that: The sliding structure comprises a linear slide rail and a linear slider which are slidably connected to each other. The linear slide rail and the linear slider are respectively arranged on the frame and the conveying mechanism. The linear slide rail extends along the conveying direction of the conveying mechanism.

8. The edge sealing device of the packaging machine according to claim 1, characterized in that: The conveying mechanism includes a bracket, a transmission roller and a belt. The bracket is connected to the frame through the sliding structure. The transmission roller is provided with at least two and is rotatably connected to the bracket. The belt is connected between the transmission rollers. The follower is fixedly connected to the bracket.

9. A packaging machine, characterized in that: The invention comprises the edge sealing device as claimed in any one of claims 1 to 8.

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