Sealing and tensioning device of rolling bag packaging machine

Abstract

The utility model relates to the technical field of rolling bag packaging machines, in particular to a rolling bag packaging machine sealing and tensioning device which comprises a working table and a pair of rolling parts arranged on the working table, a vertical plate is fixedly installed on the top of the working table, a thermoplastic module is installed on the vertical plate, and a carrying plate is fixed to the top of the working table. A pair of moving plates is arranged above the workbench, and tensioning rollers are arranged on the moving plates; the driving structure is arranged at the top of the workbench and is used for driving the two moving plates to synchronously and horizontally move; and the tensioning structure is arranged on the movable plate, and the tensioning structure enables the tensioning roller to conduct tensioning operation on the sealing opening. Compared with sealing in the prior art, by arranging the driving structure and the tensioning structure, it is ensured that a rolling bag is kept flat in the moving process, the problem of wrinkles caused by uneven stress in the sealing process is effectively solved, and the production efficiency and the sealing quality are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of continuous roll bag packaging machines, and in particular to a sealing and tensioning device for a continuous roll bag packaging machine. Background Technology

[0002] An automatic packaging sealing machine is a mechanical device used to seal containers filled with packaged goods. After products are filled into packaging containers, the containers must be sealed to ensure the product's airtight preservation, maintain product quality, and prevent product loss. Existing roll bags typically use heat-pressing technology for sealing and tensioning to achieve segmented sealing.

[0003] In practice, continuous roll bags are usually thermosealed directly after being stretched from the winding roller. However, due to uneven stress during stretching, continuous roll bags are prone to wrinkles, resulting in uneven heat distribution during thermosealing, which affects the sealing performance and strength of the seal. In addition, wrinkles can also make the sealing edges uneven, increasing the risk of packaging damage and reducing the overall quality and aesthetics of the product. Utility Model Content

[0004] The purpose of this invention is to solve the problem in the prior art that uneven force is applied during the stretching process, causing wrinkles to easily form in continuous roll bags, resulting in uneven heat distribution during thermoplasticizing. Therefore, a sealing and tensioning device for continuous roll bag packaging machines is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A sealing and tensioning device for a continuous roll bag packaging machine includes a worktable and a pair of winding sections disposed on the worktable. A vertical plate is fixedly installed on the top of the worktable, and a thermoplastic module is installed on the vertical plate. A carrying plate is fixed on the top of the worktable, and a pair of movable plates are disposed above the worktable, with tensioning rollers disposed on the movable plates.

[0007] Also includes:

[0008] A drive structure is disposed on the top of the worktable, and the drive structure is used to drive the two moving plates to move horizontally synchronously.

[0009] A tensioning structure is disposed on the movable plate, which causes the tensioning roller to perform a tensioning operation on the sealing.

[0010] Preferably, the drive structure includes a pair of vertical plates fixedly connected to the top of the workbench, the same bidirectional lead screw being rotatably connected to the opposite sidewalls of the two vertical plates, a motor for driving the bidirectional lead screw to rotate being fixed on the vertical plates, and the moving plate and the bidirectional lead screw being threadedly connected.

[0011] Preferably, the two vertical plates are fixedly connected to the same sliding rod on opposite sidewalls, and the moving plate and the sliding rod are horizontally slidably connected.

[0012] Preferably, the tensioning structure includes a horizontal plate fixedly connected to the opposite sidewalls of the two movable plates, a cylinder fixed to the bottom of the horizontal plate, an L-shaped plate fixed to the output end of the cylinder, and a pair of fixed plates provided on the opposite sidewalls of the two L-shaped plates. The two fixed plates in the pair are rotatably connected to rotating rods on their opposite sidewalls, and the rotating rods are fixedly connected to the tensioning roller.

[0013] The two movable plates are provided with transmission components on opposite sides to enable the two rotating rods to rotate synchronously.

[0014] Preferably, the transmission component includes a transmission rod rotatably connected to the vertical sidewall of the L-shaped plate, two transmission rods being horizontally slidably inserted into the same cross shaft on opposite sides, a second motor for driving the transmission rod to rotate is fixed on the L-shaped plate, one end of the rotating rod extends to the side of the fixed plate away from the tension roller and is fixedly sleeved with a first bevel gear, a second bevel gear is fixedly sleeved on the transmission rod, and the first bevel gear and the second bevel gear mesh.

[0015] Preferably, the two transmission rods have cross grooves on their opposite sidewalls to facilitate horizontal sliding of the cross shaft.

[0016] Compared with the prior art, the advantages of this utility model are as follows:

[0017] This invention, through the design of a drive structure and a tensioning structure, activates motor one and motor two when the continuous roll bag enters the working area via the top of the carrier plate. Motor one drives a bidirectional lead screw to move the moving plate horizontally in sync, ensuring that the tensioning roller is in close contact with the surface of the continuous roll bag. Motor two drives the tensioning roller to rotate synchronously through a transmission rod and bevel gear, ensuring that the continuous roll bag remains flat during movement. This effectively avoids wrinkles caused by uneven force during sealing. The entire device is compact, easy to operate, and highly automated, improving production efficiency and sealing quality. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a sealing and tensioning device for a continuous roll bag packaging machine proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the transmission component in the sealing tensioning device of a continuous roll bag packaging machine according to the present invention;

[0020] Figure 3 This is a schematic diagram of the cross shaft after it is separated from the transmission rod in the sealing tensioning device of a continuous roll bag packaging machine proposed in this utility model.

[0021] In the picture:

[0022] 1. Workbench; 2. Winding section; 3. Vertical plate; 4. Carrying plate; 5. Thermoplastic module; 6. Moving plate; 61. Vertical plate; 62. Bidirectional lead screw; 63. Motor 1; 64. Slide rod; 7. Tensioning roller; 70. Horizontal plate; 71. Cylinder; 72. L-shaped plate; 73. Fixed plate; 74. Rotating rod; 75. Transmission rod; 751. Cross slide groove; 76. Motor 2; 77. Cross shaft; 78. Bevel gear 1; 79. Bevel gear 2. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Reference Figures 1-3 A sealing and tensioning device for a continuous roll bag packaging machine includes a worktable 1 and a pair of winding sections 2 mounted on the worktable 1. The worktable 1 serves as the basic support structure of the device, and the pair of winding sections 2 on its top are used to wind and release the continuous roll bags, ensuring that the continuous roll bags can be smoothly conveyed during the sealing process. The design of the winding sections 2 makes the extension of the continuous roll bags smoother, providing a stable foundation for subsequent tensioning and sealing operations. The winding sections 2 include winding rollers and power sources that drive the winding rollers to rotate, etc., which are existing technologies and will not be described in detail here. A vertical plate 3 is fixedly installed on the top of the worktable 1, and a thermoplastic module 5 is installed on the vertical plate 3. The continuous tensioning action of the tensioning roller 7 provides a stable foundation for thermoplastic sealing. The thermoplastic module 5 applies heat evenly, ensuring that the sealing and completion effect reach the best results. The thermoplastic module 5 is an existing mature technology and will not be described in detail here. A carrying plate 4 is fixedly installed on the top of the worktable 1, which is used to support the continuous roll bags and ensure their stability during the sealing process. A pair of movable plates 6 are installed above the workbench 1. The movable plates 6 move horizontally under the control of the drive structure, driving the tension rollers 7 to tension the continuous roll bags. The tension rollers 7 are installed on the movable plates 6.

[0025] Also includes:

[0026] The drive structure is located on the top of the workbench 1 and is used to drive the two moving plates 6 to move horizontally synchronously.

[0027] The tensioning structure is set on the moving plate 6, and the tensioning structure enables the tensioning roller 7 to perform tensioning operation on the sealing.

[0028] The drive structure includes a pair of vertical plates 61 fixedly connected to the top of the workbench 1. The same bidirectional lead screw 62 is rotatably connected to the opposite sidewalls of the two vertical plates 61. A motor 63 for driving the bidirectional lead screw 62 is fixed on the vertical plates 61. A movable plate 6 is threadedly connected to the bidirectional lead screw 62. The motor 63 drives the bidirectional lead screw 62 to rotate, causing the movable plate 6 to slide horizontally along the slide bar 64, thus achieving synchronous movement of the two tension rollers 7. This design ensures that the tension rollers 7 can apply force evenly during the sealing process, preventing wrinkles from forming on the roll bag due to uneven force.

[0029] The two vertical plates 61 are fixedly connected to the same sliding rod 64 on their opposite sidewalls, and the moving plate 6 and the sliding rod 64 are horizontally slidably connected. The sliding rod 64 is designed to ensure that the moving plate 6 can move stably horizontally along the axis of the bidirectional lead screw 62.

[0030] The tensioning structure includes a horizontal plate 70 fixedly connected to the opposite side walls of two movable plates 6. A cylinder 71 is fixed to the bottom of the horizontal plate 70. The lifting function of the cylinder 71 further enhances the flexibility of the device, allowing the tensioning roller 7 to be adjusted according to the thickness and material of the continuous roll bag. An L-shaped plate 72 is fixed to the output end of the cylinder 71. A pair of fixed plates 73 are provided on the opposite side walls of the two L-shaped plates 72. Rotating rods 74 are rotatably connected to the opposite side walls of the two fixed plates 73 in the pair, and the rotating rods 74 are fixedly connected to the tensioning roller 7. The rotational connection of the rotating rods 74 allows the tensioning roller 7 to rotate flexibly and smooth out wrinkles.

[0031] The two movable plates 6 are provided with transmission components on opposite sides to enable the two rotating rods 74 to rotate synchronously.

[0032] The transmission component includes a transmission rod 75 rotatably connected to the vertical side wall of the L-shaped plate 72. Two transmission rods 75 are horizontally slidably connected to the same cross shaft 77 on opposite sides. A second motor 76 for driving the transmission rods 75 is fixed on the L-shaped plate 72. One end of a rotating rod 74 extends to the side of the fixed plate 73 away from the tension roller 7 and is fixedly fitted with a first bevel gear 78. A second bevel gear 79 is fixedly fitted on the transmission rod 75, and the first bevel gear 78 and the second bevel gear 79 mesh. The meshing of the bevel gears drives the rotating rod 74 to rotate synchronously, ensuring the synchronous rotation of the two tension rollers 7, smoothing wrinkles in both directions while preventing the roll bag from shifting.

[0033] The two transmission rods 75 have cross grooves 751 on their opposite sidewalls to facilitate the horizontal sliding of the cross shaft 77. The design of the cross shaft 77 and the cross grooves 751 makes the transmission rods 75 slide more smoothly when sliding horizontally, further improving the operating accuracy and stability of the device and preventing the movement of the moving plate 6 and the rotation of the transmission rods 75 from causing conflict.

[0034] The functional principle of this utility model can be explained through the following operation methods:

[0035] First, the continuous roll bag to be sealed extends out through the winding section 2, passes under the tension roller 7, and then extends further through and is placed on the carrier plate 4, ensuring that the bag opening is located below the thermoplastic module 5.

[0036] Next, the operator, based on the actual width and pleat distribution of the continuous roll bag, starts motor 63 to drive the bidirectional lead screw 62 to rotate, causing the two moving plates 6 to move horizontally synchronously, thereby adjusting the position of the tension roller 7 so that it is positioned appropriately above the pleats. The moving plates 6 slide on the slide bar 64 to ensure smooth movement.

[0037] Subsequently, cylinder 71 is activated, pushing L-shaped plate 72 downward to make tension roller 7 contact the continuous roll bag. Tension roller 7 is rotatably connected to fixed plate 73 through rotating rod 74, which can rotate flexibly and smooth out wrinkles.

[0038] During the rotation of the tension roller 7, the second motor 76 drives the transmission rod 75 to rotate, which in turn drives the rotating rod 74 to rotate synchronously through the meshing of the second bevel gear 79 and the first bevel gear 78. The two transmission rods 75 are connected by a cross shaft 77 to ensure that the two tension rollers 7 rotate synchronously and in opposite directions, preventing the risk of displacement of the roll bag due to rotation in the same direction or by a single rotation.

[0039] While the tensioning roller 7 tensions the continuous roll bag, the thermoforming module 5 starts working to thermoform the tensioned sealing portion. The continuous tension of the tensioning roller 7 ensures that the seal remains flat during the thermoforming process, avoiding wrinkles or loose seals.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A sealing tension device for a continuous bag packaging machine, comprising a worktable (1) and a pair of winding parts (2) arranged on the worktable (1), characterized in that, The top of the workbench (1) is fixedly provided with a vertical plate (3), the vertical plate (3) is provided with a thermoplastic module (5), the top of the workbench (1) is fixedly provided with a loading plate (4), a pair of moving plates (6) are arranged above the workbench (1), and the moving plates (6) are provided with tensioning rollers (7); Also includes: A driving structure is arranged on the top of the workbench (1), and the driving structure is used for driving the two moving plates (6) to move horizontally synchronously; A tensioning structure is arranged on the moving plate (6), and the tensioning structure enables the tensioning roller (7) to tension the seal.

2. A continuous bag packaging machine seal tensioning device according to claim 1, wherein, The driving structure comprises a pair of vertical plates (61) fixedly connected to the top of the workbench (1), a same bidirectional lead screw (62) rotatably connected to the opposite side walls of the two vertical plates (61), a motor one (63) fixed to the vertical plate (61) and used for driving the bidirectional lead screw (62) to rotate, and the moving plate (6) is threadedly connected with the bidirectional lead screw (62).

3. A continuous bag packaging machine seal tensioning device according to claim 2, wherein, The opposite side walls of the two vertical plates (61) are fixedly connected with a same sliding rod (64), and the moving plate (6) is horizontally slidably connected with the sliding rod (64).

4. A continuous bag packaging machine seal tensioning device according to claim 1, wherein, The tensioning structure comprises a horizontal plate (70) fixedly connected to the opposite side walls of the two moving plates (6), a pneumatic cylinder (71) fixed to the bottom of the horizontal plate (70), an L-shaped plate (72) fixed to the bottom output end of the pneumatic cylinder (71), a pair of fixed plates (73) arranged on the opposite side walls of the two L-shaped plates (72), a rotating rod (74) rotatably arranged on the opposite side walls of the two fixed plates (73) which are a same pair, and the rotating rod (74) is fixedly connected with the tensioning roller (7). The opposite sides of the two moving plates (6) are provided with a transmission member for synchronously rotating the two rotating rods (74).

5. A seal tensioning device for a roll bag packaging machine as defined in claim 4, wherein The transmission member comprises a transmission rod (75) rotatably connected to the vertical side wall of the L-shaped plate (72), a same cross shaft (77) horizontally slidably inserted into the opposite sides of the two transmission rods (75), a motor two (76) fixed to the L-shaped plate (72) and used for driving the transmission rod (75) to rotate, a bevel gear one (78) fixedly sleeved on one end of the rotating rod (74) and extending to the side of the fixed plate (73) away from the tensioning roller (7), a bevel gear two (79) fixedly sleeved on the transmission rod (75), and the bevel gear one (78) is engaged with the bevel gear two (79).

6. A seal tensioning device for a roll bag packaging machine as defined in claim 5, wherein Cross-shaped sliding grooves (751) are formed in the opposite side walls of the two transmission rods (75) to facilitate the horizontal sliding of the cross shaft (77).

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