Gravity balance for horizontal sealing of continuous packaging machines

Abstract

The utility model discloses a continuous type packing machine horizontal seal's gravity balance of device, include: vertical board, the outer wall sliding installation gravity balance frame of vertical board, the outer wall fixed mounting horizontal seal structure of gravity balance frame, lift adjusting structure, including synchronous cylinder, two groups are symmetric with synchronous cylinder left and right, and the output shaft of two synchronous cylinders is connected with the lateral wall of gravity balance frame through axle pin, relate to the gravity balance device field of packing machine horizontal seal, through the constant pressure balance and servo motor drive's connecting rod mechanism of synchronous cylinder of slide rail guide, horizontal seal structure can keep height stable in the lifting process, effectively avoid the wobble and the deviation, make every time horizontal seal pressure even, position accurate, greatly promote the sealing property and appearance quality of packing, reduce the rate of defective products.

Description

Technical Field

[0001] This utility model relates to the technical field of gravity balancing devices for horizontal sealing of packaging machines, specifically gravity balancing devices for horizontal sealing of continuous packaging machines. Background Technology

[0002] In continuous packaging machines, the horizontal sealing process is a crucial step in ensuring the quality of the packaged product. The horizontal sealing structure needs to frequently reciprocate up and down during the packaging process to complete the heat sealing operation of the packaging material. In traditional packaging machines, the horizontal sealing device, due to its own weight, is easily affected by gravity during lifting and lowering, leading to unstable movement, shaking, and jamming. This results in uneven heat sealing pressure, incomplete packaging seals, and ultimately quality problems such as air leakage and damage. Furthermore, existing devices often rely on single mechanical transmissions or pneumatic drives, making precise control difficult. If only traditional motor drives are used, a large amount of power is required to overcome gravity, resulting in high energy consumption, severe equipment wear, and poor synchronization, failing to meet the stability and precision requirements of high-speed continuous packaging. Utility Model Content

[0003] The purpose of this invention is to provide a gravity balancing device for horizontal sealing in a continuous packaging machine, so as to solve the problem of difficulty in achieving precise control mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] The gravity balancing device for the horizontal sealing of a continuous packaging machine includes:

[0006] A vertical plate, on the outer wall of which a gravity balance frame is slidably installed, and on the outer wall of which a horizontal sealing structure is fixedly installed;

[0007] The lifting and adjusting structure includes a synchronizing cylinder, with two sets of synchronizing cylinders arranged symmetrically on the left and right sides. The output shafts of the two synchronizing cylinders are connected to the side wall of the gravity balance frame through axle pins.

[0008] In a preferred embodiment of this utility model, a motor frame is fixedly installed on the outer wall of the upright plate, and a drive shaft is fixedly connected to the outer wall of the output shaft of the servo motor.

[0009] In a preferred embodiment of this utility model, a first connecting rod is fixedly installed on the outer wall of the end of the drive shaft, and a second connecting rod is rotatably connected between the end of the first connecting rod and the bottom outer wall of the gravity balance frame.

[0010] In a preferred embodiment of this utility model, the two synchronous cylinders are connected to an air storage tank via an air pipe. The air inlet pressure of the air storage tank is 0.4 MPa, and the air inlet of the air storage tank is equipped with a one-way valve.

[0011] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

[0012] 1. Through the guide rail, the constant pressure balance of the synchronous cylinder and the linkage mechanism driven by the servo motor, the horizontal sealing structure can maintain high stability during the lifting process, effectively avoiding shaking and deviation, so that the horizontal sealing pressure is uniform and the position is accurate each time, which greatly improves the sealing performance and appearance quality of the packaging and reduces the defect rate.

[0013] 2. The design combines pneumatic and mechanical transmission, using a stable air supply from an air tank to achieve gravity balance, reducing the energy consumption required for the motor to directly counteract gravity. At the same time, the stable operation reduces wear between components, extends the service life of key components such as slide rails and cylinders, reduces equipment maintenance frequency and repair costs, and is suitable for high-speed continuous production. Attached Figure Description

[0014] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0015] Figure 1 This is a schematic diagram of the main structure of the gravity balancing device for horizontal sealing in a continuous packaging machine.

[0016] In the diagram: 1. Vertical plate; 2. Slide rail; 3. Gravity balance frame; 4. Air tank; 5. Synchronous cylinder; 6. Motor frame; 7. Servo motor; 8. Drive shaft; 9. First connecting rod; 10. Second connecting rod. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0018] Example 1: As Figure 1 ,include:

[0019] Vertical plate 1, gravity balance frame 3 is slidably installed on the outer wall of vertical plate 1, and horizontal sealing structure is fixedly installed on the outer wall of gravity balance frame 3;

[0020] The lifting and adjusting structure includes a synchronous cylinder 5. Two sets of synchronous cylinders 5 are symmetrically arranged on the left and right sides. The output shafts of the two synchronous cylinders 5 are connected to the side wall of the gravity balance frame 3 through axle pins.

[0021] The specific application scenario of this embodiment is as follows: During the operation of a continuous packaging machine, the horizontal sealing structure needs to move up and down frequently to complete the heat sealing operation of the packaging material. The vertical plate 1 serves as the supporting foundation of the entire device, and the gravity balance frame 3 slides along its outer wall. The horizontal sealing structure is fixed on the gravity balance frame 3. Two sets of synchronous cylinders 5, symmetrically arranged on the left and right, are connected to the air storage tank 4 through air pipes to ensure that the output shaft extends and retracts synchronously. When the output shaft of the cylinder 5 extends, it pushes the gravity balance frame 3 to slide upward along the vertical plate 1, and the horizontal sealing structure rises accordingly. Conversely, when the output shaft retracts, the gravity balance frame 3 drives the horizontal sealing structure to descend. Through the synchronous drive of the cylinders, the weight of the horizontal sealing structure itself is offset, achieving smooth lifting and lowering, avoiding movement jamming or asynchrony caused by gravity, and improving the heat sealing accuracy.

[0022] Example 2: Figure 1 The outer wall of the upright plate 1 is fixedly installed with a slide rail 2, and the rear outer wall of the gravity balance frame 3 is slidably connected to the upright plate 1 through the slide rail 2.

[0023] The specific application scenario of this embodiment is as follows: The slide rail 2 on the outer wall of the upright plate 1 cooperates with the outer wall of the rear end of the gravity balance frame 3 to form a sliding pair. During the process of the synchronous cylinder 5 driving the gravity balance frame 3 to rise and fall, the slide rail 2 plays a guiding role, restricting the movement trajectory of the gravity balance frame 3 and ensuring that it slides only along the vertical direction of the upright plate 1, reducing lateral offset or swaying. This design reduces frictional resistance, improves the stability of movement, and at the same time reduces component wear and extends the service life of the device. During horizontal sealing operation, precise sliding guidance can ensure that the heat sealing pressure is evenly distributed and improve the packaging sealing quality.

[0024] Example 3: Figure 1 A motor frame 6 is fixedly installed on the outer wall of the upright plate 1. A drive shaft 8 is fixedly connected to the outer wall of the output shaft of the servo motor 7. A first connecting rod 9 is fixedly installed on the outer wall of the end of the drive shaft 8. A second connecting rod 10 is rotatably connected between the end of the first connecting rod 9 and the bottom outer wall of the gravity balance frame 3. An air tank 4 is connected between the two synchronous cylinders 5 through an air pipe. The air inlet pressure of the air tank 4 is 0.4 MPa. A one-way valve is provided at the air inlet of the air tank 4.

[0025] The specific application scenario of this embodiment is as follows: The servo motor 7 is fixed on the upright plate 1 through the motor frame 6. Its output shaft drives the shaft 8 to rotate, and the first connecting rod 9 at the end of the drive shaft 8 rotates accordingly. It is connected to the bottom of the gravity balance frame 3 through the second connecting rod 10 to form a crank rocker mechanism. When the servo motor 7 rotates according to the preset program, the first connecting rod 9 and the second connecting rod 10 work together to convert the rotational motion into the linear lifting motion of the gravity balance frame 3. At this time, the synchronous cylinder 5 cooperates with the air tank 4 to provide constant air pressure, counteract gravity and balance the inertial force in the mechanical transmission process. The one-way valve ensures that the air intake of the air tank 4 is stable and avoids pressure fluctuations from affecting the cylinder synchronization. This combination of mechanical transmission and pneumatic balance realizes the precise and stable lifting of the horizontal sealing structure, which is suitable for high-speed continuous packaging production lines and improves production efficiency and the consistency of heat sealing quality.

[0026] The working principle of this utility model is as follows: When used by those skilled in the art, the gravity balancing device of the horizontal sealing of the continuous packaging machine operates. The vertical plate 1 serves as the main support, and the slide rail 2 on the outer wall of the vertical plate 1 provides a stable vertical sliding guide for the gravity balancing frame 3. The horizontal sealing structure fixed on the gravity balancing frame 3 can move with it. Two sets of symmetrical synchronous cylinders 5 are connected to the air tank 4 through air pipes. The air tank 4 ensures stable air intake with a stable pressure of 0.4 MPa and a one-way valve, so that the cylinder output shaft extends and retracts synchronously. The thrust generated can counteract the gravity of the horizontal sealing structure, ensuring smooth lifting and lowering. At this time, the servo motor 7 is mounted on the motor frame 6 of the upright plate 1. The servo motor 7 drives the shaft 8 to drive the crank rocker mechanism composed of the first connecting rod 9 and the second connecting rod 10, converting the rotational motion into linear motion. This precisely controls the lifting speed and stroke of the gravity balance frame 3. The mechanical transmission and pneumatic balance work together to make the horizontal sealing structure move upward when it rises, with the servo motor driving the connecting rod mechanism and cooperating with the cylinder thrust. When it falls, the servo motor reverses and combines with the cylinder exhaust to fall smoothly. This achieves precise and stable lifting of the horizontal sealing structure during the packaging process, effectively improving the packaging heat sealing quality and production efficiency.

[0027] Although embodiments of the present invention have been shown and described, those skilled in the art will understand 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 claims and their equivalents.

Claims

1. A gravity balancing device for horizontal sealing in a continuous packaging machine, characterized in that, include: A vertical plate (1) is provided, and a gravity balance frame (3) is slidably installed on the outer wall of the vertical plate (1). A horizontal sealing structure is fixedly installed on the outer wall of the gravity balance frame (3). The lifting and adjusting structure includes a synchronous cylinder (5), two sets of synchronous cylinders (5) are symmetrically arranged on the left and right sides, and the output shafts of the two synchronous cylinders (5) are connected to the side wall of the gravity balance frame (3) by axle pins.

2. The gravity balancing device for horizontal sealing in a continuous packaging machine according to claim 1, characterized in that, The outer wall of the upright plate (1) is fixedly installed with a slide rail (2), and the rear outer wall of the gravity balance frame (3) is slidably connected to the upright plate (1) through the slide rail (2).

3. The gravity balancing device for horizontal sealing in a continuous packaging machine according to claim 1, characterized in that, The outer wall of the upright plate (1) is fixedly mounted with a motor frame (6), and the outer wall of the output shaft of the servo motor (7) is fixedly connected to the drive shaft (8).

4. The gravity balancing device for horizontal sealing in a continuous packaging machine according to claim 3, characterized in that, The first connecting rod (9) is fixedly installed on the outer wall of the end of the drive shaft (8), and the end of the first connecting rod (9) is rotatably connected to the bottom outer wall of the gravity balance frame (3) by the second connecting rod (10).

5. The gravity balancing device for horizontal sealing in a continuous packaging machine according to claim 4, characterized in that, The two synchronous cylinders (5) are connected to an air storage tank (4) via an air pipe. The air inlet pressure of the air storage tank (4) is 0.4 MPa, and the air inlet of the air storage tank (4) is equipped with a one-way valve.

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