Bag sealing device for a bottle cap packaging machine

Abstract

The utility model relates to the field of packing machinery provides a kind of bag sealing device for bottle cap packing machine, the bag sealing device for bottle cap packing machine includes fixed frame, the fixed frame is equipped with fixed plate towards front, a pair of sliding sleeve is equipped on the fixed plate, connecting sleeve is slidably arranged in the sliding sleeve, sliding rod is equipped in the connecting sleeve, the front connecting seat and rear connecting seat are respectively oppositely arranged on the sliding rod and connecting sleeve, heat sealing plate is equipped on the two connecting seats, spring is equipped between the front connecting seat and rear connecting seat on the sliding rod, sliding drive component for driving the relative motion of connecting sleeve, sliding rod is equipped on the fixed frame. The device drives the relative motion of connecting sleeve and sliding rod by setting sliding drive component, drives front and rear heat sealing plate to realize heat sealing by approaching each other, and the spring on sliding rod can improve the stable pressing force, ensure that pressure is uniform and stable in heat sealing process, effectively avoid the problem such as bag sealing not firm, leak sealing, improve bag sealing quality.

Description

Technical Field

[0001] This utility model relates to the field of packaging machinery, specifically a sealing device for a bottle cap packaging machine. Background Technology

[0002] In the bottle cap manufacturing industry, after processes such as injection molding and testing, the caps need to be sealed in quantitative bags using a packaging machine for subsequent storage and transportation. As the core component of the bottle cap packaging machine, the sealing device's efficiency and sealing quality directly affect the stability of the overall production process and the product packaging qualification rate.

[0003] Existing bottle cap packaging machines mostly use a single-drive, single-heat-sealing-plate structure for their sealing devices. The heat-sealing plate is driven by a cylinder to move unidirectionally to achieve film heat sealing. This type of device has significant shortcomings: firstly, the heat sealing and slitting processes are often performed in separate steps, requiring independent control of the drive components, resulting in a long sealing cycle and making it difficult to meet the efficiency requirements of high-speed bottle cap production lines. Secondly, the coordination between heat sealing and slitting actions is poor, often resulting in slitting before the heat seal is secure, leading to damage to the packaging bag. Utility Model Content

[0004] In view of the above problems, the purpose of this utility model is to provide a sealing device for a bottle cap packaging machine, which aims to solve the problems of long sealing cycle and low sealing quality of the existing sealing devices for bottle cap packaging machines.

[0005] This utility model provides the following technical solution: a sealing device for a bottle cap packaging machine, the sealing device for the bottle cap packaging machine includes a fixed frame, a fixed plate is provided facing forward on the fixed frame, a pair of sliding sleeves are provided on the fixed plate, a connecting sleeve is slidably provided in the sliding sleeve, a sliding rod is provided in the connecting sleeve, a front connecting seat and a rear connecting seat are respectively provided on the sliding rod and the connecting sleeve, a heat sealing plate is provided on both the front and rear connecting seats, a spring is provided on the sliding rod between the front and rear connecting seats, a sliding drive assembly for driving the relative movement of the connecting sleeve and the sliding rod is provided on the fixed frame, grooves are provided on the heat sealing plates, a slitting knife is provided in the groove of the rear heat sealing plate, and a slitting assembly for driving the slitting knife to move back and forth is provided on the rear connecting seat.

[0006] Furthermore, the tails of the two sliding rods are rotatably equipped with connecting frames, the tails of the two connecting sleeves are equipped with connecting plates, and the back of the connecting plates is rotatably equipped with rotating plates. The connecting plates and connecting frames are arranged front and rear. A pair of rotating shafts are rotatably equipped on the fixed frame, and a pair of connecting blocks are equipped on the rotating shafts. One connecting block is arranged facing forward, and the other connecting block is arranged facing backward. A linkage shaft is provided between the two forward-arriving connecting blocks. The linkage shaft is rotatably connected to the rotating plate. Both of the two rearward-arriving connecting blocks are rotatably connected to the connecting frame. The sliding drive assembly includes a dual-axis drive motor. The left and right drive shafts of the dual-axis drive motor are equipped with driving pulleys. The rotating shafts are equipped with driven pulleys. A belt is fitted between the driving pulleys and driven pulleys at the same position.

[0007] Furthermore, the slitting assembly includes a slitting cylinder mounted on the back of the rear connector. The drive shaft of the slitting cylinder is provided with a push-pull plate, and the push-pull plate is provided with a pair of push-pull rods. The ends of the push-pull rods pass through the rear connector and are mounted on the back of the slitting blade.

[0008] Furthermore, both the bottom of the front connecting seat and the bottom of the rear connecting seat are provided with baffles, the middle of the baffles is bent downwards and outwards, and the ends of the baffles are straight.

[0009] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0010] 1. This device uses a sliding drive assembly to drive the connecting sleeve and the slide rod to move relative to each other, thereby bringing the front and rear heat sealing plates closer together to achieve heat sealing. At the same time, the spring on the slide rod can improve the stable pressing force, ensuring uniform and stable pressure during the heat sealing process, effectively avoiding problems such as loose sealing and leakage, and improving the sealing quality.

[0011] 2. The slitting blade is set in the groove of the rear heat-sealing plate. The slitting assembly drives the slitting blade to move back and forth to perform the slitting operation. The groove of the heat-sealing plate guides and positions the slitting blade, ensuring the accuracy of the slitting position, making the cut of the packaging bag flat, and avoiding damage to the heat-sealed part.

[0012] 3. The sliding drive assembly adopts a dual-axis drive motor with belt drive to drive a pair of rotating shafts to rotate synchronously. This, in turn, drives the connecting sleeve and slide rod to move synchronously through the connecting block, linkage shaft, rotating plate and connecting frame, ensuring that the front and rear heat sealing plates move in a coordinated manner and improving the operational stability of the device. Attached Figure Description

[0013] Figure 1 This is an overall view of a sealing device for a bottle cap packaging machine according to the present invention;

[0014] Figure 2 This is a schematic diagram of the structural cutting component of this utility model;

[0015] Figure 3 This is a schematic diagram of the sliding drive assembly of this utility model.

[0016] Figure 4 This is a schematic diagram of the installation of the structural baffle of this utility model. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-4 This embodiment discloses a sealing device for a bottle cap packaging machine. The sealing device includes a fixed frame 1, a fixed plate 3 facing forward on the fixed frame 1, a pair of sliding sleeves 4 on the fixed plate 3, a connecting sleeve 5 slidably disposed within the sliding sleeves 4, a sliding rod 6 disposed within the connecting sleeve 5, a front connecting seat 7 and a rear connecting seat 8 respectively disposed opposite to each other on the sliding rod 6 and the connecting sleeve 5, and a heat sealing plate 9 disposed on both the front and rear connecting seats. A spring 10 is disposed on the sliding rod 6 between the front connecting seat 7 and the rear connecting seat 8. A sliding drive assembly for driving the relative movement of the connecting sleeve 5 and the sliding rod 6 is disposed on the fixed frame 2. A groove 2 is formed on each of the heat sealing plates 9, wherein a slitting blade 11 is disposed in the groove of the rear heat sealing plate 9. A slitting assembly for driving the slitting blade to move back and forth is disposed on the rear connecting seat 8.

[0019] This device includes a mounting frame, which is typically mounted on the main frame of the packaging machine. A mounting plate is fixed to the front of the mounting frame. A pair of sliding sleeves are fixed to the mounting plate. A connecting sleeve is slidably installed within each sliding sleeve. A sliding rod is slidably threaded through each connecting sleeve. A front connecting seat is fixed to the front end of the sliding rod, and a rear connecting seat is fixed to the front end of the connecting sleeve. A front heat-sealing plate and a rear heat-sealing plate are respectively mounted on the front and rear connecting seats. Heating elements (such as electric heating tubes) can be installed inside the front and rear heat-sealing plates; however, since the heat-sealing plates are not the focus of this device, they will not be described in detail here. A spring is fitted on the sliding rod between the front and rear connecting seats. One end of the spring abuts against the front connecting seat, and the other end abuts against the rear connecting seat.

[0020] As a specific structure, combined Figure 1-3The two sliding rods 6 are rotatably equipped with connecting frames 12 at their tails, and the two connecting sleeves 5 are equipped with connecting plates 13 at their tails. A rotating plate 14 is rotatably equipped on the back of the connecting plate 13. The connecting plate 13 and the connecting frame 12 are arranged front and rear. A pair of rotating shafts 15 are rotatably equipped on the fixed frame 1. A pair of connecting blocks 16 are provided on the rotating shafts 15. One connecting block 16 is arranged facing forward and the other connecting block is arranged facing backward. A linkage shaft (obscured in the figure) is provided between the two forward-arranged connecting blocks 16. The linkage shaft is rotatably connected to the rotating plate 14. Both of the two rearward-arranged connecting blocks 16 are rotatably connected to the connecting frame 12. The sliding drive assembly includes a dual-axis drive motor 18. The left and right drive shafts of the dual-axis drive motor 18 are equipped with driving pulleys 19. The rotating shafts 15 are equipped with driven pulleys 20. A belt 21 is fitted between the driving pulleys 19 and driven pulleys 20 at the same position.

[0021] A sliding drive assembly is used to drive the opening and closing of the heat-sealing plate. The rear ends of two sliding rods are rotatably connected to a U-shaped connecting frame via pins. The rear ends of two connecting sleeves are fixed to a connecting plate. A rotating plate is rotatably connected to the back of the connecting plate. A pair of rotating shafts are rotatably mounted on the fixed frame, each shaft having two connecting blocks fixed on it, one facing forward and the other facing backward. A linkage shaft is fixedly connected between the two forward-facing connecting blocks, and this linkage shaft is rotatably connected to the rotating plate. The two rearward-facing connecting blocks are rotatably connected to the two sides of the connecting frame, respectively. A dual-axis drive motor is mounted on the fixed frame, with a driving pulley on each of its two drive shafts. Each rotating shaft has a driven pulley. A belt is fitted between the corresponding driving and driven pulleys.

[0022] As a preferred structure, Figure 2 In the process, the slitting assembly includes a slitting cylinder 23 mounted on the back of the rear connecting seat. The drive shaft of the slitting cylinder 23 is provided with a push-pull plate 24. The push-pull plate 24 is provided with a pair of push-pull rods 25. The ends of the push-pull rods pass through the rear connecting seat and are mounted on the back of the slitting blade 11.

[0023] In this structure, the slitting assembly is mounted on the rear connector. A slitting blade is installed in the groove of the rear heat-sealing plate. A slitting cylinder is fixed to the back of the rear connector, and the drive shaft of the slitting cylinder is connected to a push-pull plate. When the slitting cylinder is activated, it can push the slitting blade from the groove of the rear heat-sealing plate into the groove of the front heat-sealing plate for slitting.

[0024] Figure 4 In this design, both the bottom of the front connecting seat 7 and the bottom of the rear connecting seat are provided with baffles 26. The middle part of the baffles is bent downwards and outwards, and the ends of the baffles are straight. This baffle structure design can support and guide the packaging bag during hot air sealing.

[0025] In operation, the two heat-sealing plates are initially separated. When sealing is required, the dual-axis drive motor starts, driving the two rotating shafts to rotate synchronously via belt drive. The connecting blocks on the rotating shafts swing accordingly. The forward-facing connecting block pushes the connecting plate forward through the linkage shaft and rotating plate, thereby causing the two connecting sleeves to slide forward within the sliding sleeve. Simultaneously, the rearward-facing connecting block pulls the connecting frame, causing the two sliding rods to move backward relative to the connecting sleeve. As a result of this relative movement, the front and rear connecting seats move closer together, causing the front and rear heat-sealing plates to close, clamping the opening of the packaging bag and performing heat sealing. The spring is compressed during this process, providing stable pressure. After heat sealing, the slitting cylinder actuates, pushing the slitting blade forward to cut the sealed packaging bag off the continuous material. After slitting, the slitting cylinder resets, and the slitting blade retracts into the groove of the rear heat-sealing plate. Subsequently, the dual-axis drive motor reverses, driving the heat-sealing plates to separate. The baffle guides and supports the bag opening throughout the heat sealing process, further improving the quality of the sealing.

[0026] The entire workflow is now complete, and anything not described in detail in this specification is existing technology known to those skilled in the art.

[0027] It should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sealing device for a bottle cap packaging machine, characterized in that: The sealing device for the bottle cap packaging machine includes a fixed frame, a fixed plate facing forward on the fixed frame, a pair of sliding sleeves on the fixed plate, a connecting sleeve slidingly inside the sliding sleeve, a sliding rod inside the connecting sleeve, a front connecting seat and a rear connecting seat respectively arranged opposite to each other on the sliding rod and the connecting sleeve, a heat sealing plate on both the front and rear connecting seats, a spring on the sliding rod located between the front and rear connecting seats, a sliding drive assembly for driving the relative movement of the connecting sleeve and the sliding rod on the fixed frame, grooves on the heat sealing plates, a slitting knife in the groove of the rear heat sealing plate, and a slitting assembly for driving the slitting knife to move back and forth on the rear connecting seat.

2. The sealing device for a bottle cap packaging machine according to claim 1, characterized in that: The tails of the two sliding rods are rotatably equipped with connecting frames, and the tails of the two connecting sleeves are equipped with connecting plates. A rotating plate is rotatably equipped on the back of the connecting plate. The connecting plates and connecting frames are arranged front and rear. A pair of rotating shafts are rotatably equipped on the fixed frame. A pair of connecting blocks are equipped on the rotating shafts. One connecting block is arranged forward and the other is arranged backward. A linkage shaft is provided between the two forward-arriving connecting blocks. The linkage shaft is rotatably connected to the rotating plate. Both of the two backward-arriving connecting blocks are rotatably connected to the connecting frame. The sliding drive assembly includes a dual-axis drive motor. The left and right drive shafts of the dual-axis drive motor are equipped with driving pulleys. The rotating shafts are equipped with driven pulleys. A belt is fitted between the driving pulleys and driven pulleys at the same position.

3. The sealing device for a bottle cap packaging machine according to claim 2, characterized in that: The slitting assembly includes a slitting cylinder mounted on the back of the rear connector. The drive shaft of the slitting cylinder is provided with a push-pull plate, and the push-pull plate is provided with a pair of push-pull rods. The ends of the push-pull rods pass through the rear connector and are mounted on the back of the slitting blade.

4. A sealing device for a bottle cap packaging machine according to claim 3, characterized in that: Both the bottom of the front connecting seat and the bottom of the rear connecting seat are provided with baffles. The middle part of the baffles is bent downwards and outwards, and the end of the baffles is a straight structure.

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