A clamp for automatic bagging of valve port packaging machines

Abstract

The utility model provides a kind of clamp for valve port packing machine automatic bagging, including main seat frame with axial through-hole, and N drive cylinders are installed on main seat frame along circumferential array, and the telescopic end of drive cylinder is all directed to array center and is connected with suction disc holder, the corresponding clamping plate of two suction disc holders located at bottom is set, suction disc holder front end installs the suction disc directed to frame inner side, and suction disc is connected vacuum generating device to obtain negative pressure and suck valve port bag bag mouth. Suction disc arranged along circumference can open valve port bag bag mouth regularly and effectively to radial, avoid bagging process bag mouth to be stuck in powder pipe to cause automatic bagging failure, effectively improve automatic bagging success rate, reduce the requirement of packing machine to packing bag material.

Description

Technical Field

[0001] This utility model relates to the field of bagging fixtures for packaging machines, specifically a fixture for automatic bagging in valve-type packaging machines. Background Technology

[0002] Valve-sealed packaging machines are automated quantitative packaging equipment that achieves high-efficiency production through automatic bag feeding, weighing, and sealing processes. They are widely used in industries such as chemicals, building materials, and grains. In powder packaging, valve-sealed bags are often used to avoid dust generation during the packaging process. The bag is sealed at the bottom and has an openable valve at the top. The valve is fitted onto the feeding pipe of the packaging machine, allowing powder filling to be performed without dust pollution.

[0003] To achieve automated production, valve-sealed packaging machines are equipped with automatic bagging devices. For example, the existing patent CN212290559U proposes an intelligent bagging device for powder packaging robots, which uses two suction cups on the left and right sides to hold the valve bag opening open. However, because valve-sealed packaging machines use a variety of valve-sealed packaging bags with different materials, softness, hardness, and thickness, using existing bagging devices for soft and thin packaging bags can easily result in irregular shapes after the bag opening opens, and the top of the bag opening may collapse downwards. During the bagging process, the edge of the bag opening can easily get stuck in the powder outlet pipe, leading to automatic bagging failure.

[0004] Based on the above issues, it is necessary to propose an automatic bagging fixture for valve bag packaging machines that can effectively open the valve bag opening and ensure a regular opening shape, thereby improving the success rate of automatic bag loading and reducing the requirements for packaging bag materials. Utility Model Content

[0005] This utility model provides a clamp for automatic bagging in valve bag packaging machines, which can make the valve bag opening open regularly and effectively, thereby improving the success rate of automatic bag feeding and reducing the requirements of the packaging machine on the packaging bag material.

[0006] To achieve the above-mentioned technical objectives and effects, this utility model solves the above-mentioned problems through the following technical solution:

[0007] A clamp for automatic bagging in a valve packaging machine includes a main frame with an axial through hole and N drive cylinders arranged in a circumferential array on the main frame. The telescopic ends of the drive cylinders all point to the center of the array, and N is an even number greater than or equal to 4. Each telescopic end of the drive cylinder is equipped with a suction cup frame. Two suction cup frames located at the bottom are arranged opposite each other and are equipped with corresponding clamping plates. The front end of each suction cup frame is equipped with a suction cup pointing to the inside of the frame body, and the suction cup is connected to a vacuum generator to obtain negative pressure.

[0008] In this design, the drive cylinders arranged in a circular array cause the suction cups to form a radially opening and closing frame mechanism. The suction cups are installed inside the suction cup frame to form a ring-shaped suction structure. The valve bag opening inside can open radially in a regular and effective manner under the action of suction, avoiding the bag opening from getting stuck in the powder outlet pipe during the bagging process, which would cause the automatic bagging to fail.

[0009] Furthermore, the main frame is an inner and outer regular octagonal frame structure, and the drive cylinders are installed inside the frame; there are N=4 drive cylinders, which are installed symmetrically on the left and right sides of the main frame in pairs.

[0010] Furthermore, the suction cup is connected to a vacuum generator via a negative pressure pipeline, and the negative pressure pipeline is connected to a pressure sensor to detect negative pressure.

[0011] Furthermore, each suction cup is equipped with a vacuum generator and a pressure sensor.

[0012] Furthermore, a flange seat is provided on the top of the main support frame.

[0013] The advantages and effects of this utility model are:

[0014] 1. This utility model proposes a clamp for automatic bagging in valve-mouth packaging machines. The suction cups arranged around the circumference can regularly and effectively open the valve bag opening radially, avoiding the bag opening from getting stuck in the powder outlet pipe during the bagging process, which would cause the automatic bagging to fail. This effectively improves the success rate of automatic bagging and reduces the requirements of the packaging machine on the packaging bag material.

[0015] 2. In this solution, each suction cup is equipped with a vacuum generator and a pressure sensor, which can effectively monitor the negative pressure of each suction cup and further ensure the effective opening of the valve bag opening. The power of the corresponding vacuum generator can be set according to the position of each suction cup, which is more in line with the requirements of energy saving and consumption reduction. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 for Figure 1 Left view of the structure shown;

[0018] Figure 3 for Figure 1 The front view of the structure shown.

[0019] Part number markings: 1. Main base frame, 2. Drive cylinder, 3. Suction cup frame, 4. Suction cup, 5. Clamping plate, 6. Vacuum generator, 7. Pressure sensor, 8. Flange seat. Detailed Implementation

[0020] The present invention will be further described below with reference to the embodiments, but the present invention is not limited to these embodiments.

[0021] This embodiment describes a clamp for automatic bagging in a valve-mouth packaging machine, as shown in the attached figure. Figure 1-3 As shown, the fixture includes a main frame 1, a drive cylinder 2, a suction cup frame 3, a suction cup 4, a vacuum generator 6, a pressure sensor 7, and a flange seat 8. The main frame 1 adopts an inner and outer regular octagonal frame structure, with the front and rear ends of the main frame 1 positioned front to back. In this embodiment, the front-to-back direction is based on the direction of the front and rear end faces of the main frame 1. The flange seat 8 is fixed to the top of the main frame 1, allowing the fixture to be mounted on an industrial robot.

[0022] As attached Figure 2 As shown, four drive cylinders 2 are arranged in a circumferential array at the rear end of the main frame 1, and are symmetrically arranged on the left and right sides in pairs. The drive cylinders 2 are three-axis cylinders, with their extension and retraction ends pointing towards the center of the array. Each extension and retraction end of the drive cylinder 2 is equipped with a suction cup frame 3. The two suction cup frames 3 at the bottom are equipped with two opposing clamping plates 5, which are fixed to the bottom front end of the suction cup frame 3. When the suction cup frames 3 retract inwards with the extension and retraction ends of the drive cylinders 2, the clamping plates on both sides come together to clamp the bag body, with the valve opening of the packaging bag positioned above the clamping position.

[0023] As attached Figure 1 , 3 As shown, each suction cup holder 3 has a suction cup 4 pointing towards the inside of the holder body installed on its front inner side. Each suction cup 4 is equipped with a vacuum generator 6 and a pressure sensor 7, which are fixed to the outer wall of the main frame 1. The suction cup 4 obtains negative pressure by connecting to the corresponding vacuum generator 6 through a negative pressure pipeline. A T-connector is installed on the negative pressure pipeline to connect to the pressure sensor 7, which outputs a negative pressure signal. The vacuum generator 6, pressure sensor 7, and drive cylinder 2 are connected to the industrial robot's control system.

[0024] The fixture used in this embodiment for automatic bagging of valve-mouth packaging machines moves with the industrial robot to the bag-picking position. The suction cup frame 3 retracts inward under the drive of the drive cylinder 2, gripping the valve-mouth packaging bag. Simultaneously, the vacuum generator 6 operates, and the suction cups 4 suction the bag opening from four directions. After the pressure sensor 7 detects a negative pressure value reaching a set value, the industrial robot transports the fixture and packaging bag to the bagging position, allowing the packaging bag to be inserted into the powder outlet pipe of the packaging machine. Then, the vacuum generator 6 stops operating, the suction cups 4 release the bag opening, the suction cup frame 3 opens and resets, and the industrial robot, carrying the fixture, returns to the bag-picking position, completing one bagging cycle.

[0025] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations of these embodiments without departing from the principles and spirit of this utility model still fall within the protection scope of this utility model.

Claims

1. A clamp for automatic bagging in a valve-sealed packaging machine, characterized in that: It includes a main frame (1) with an axial through hole, and N drive cylinders (2) arranged in a circumferential array on the main frame (1). The extension and retraction ends of the drive cylinders (2) all point to the center of the array circle, and N is an even number greater than or equal to 4. The extension and retraction ends of the drive cylinder (2) are all equipped with suction cup frames (3). The two suction cup frames (3) at the bottom are arranged opposite each other and are equipped with corresponding clamps (5). The front end of the suction cup frame (3) is equipped with a suction cup (4) pointing to the inside of the frame body. The suction cup (4) is connected to a vacuum generator (6) to obtain negative pressure.

2. The clamp for automatic bagging in a valve-mouth packaging machine according to claim 1, characterized in that: The main frame (1) is an inner and outer regular octagonal frame structure, and the drive cylinder (2) is installed inside the frame; there are N=4 drive cylinders (2), which are installed symmetrically on the left and right sides of the main frame (1).

3. The clamp for automatic bagging in a valve-mouth packaging machine according to claim 1, characterized in that: The suction cup (4) is connected to the vacuum generator (6) through a negative pressure pipeline, and the negative pressure pipeline is connected to the pressure sensor (7) to detect the negative pressure.

4. A clamp for automatic bagging in a valve-mouth packaging machine according to claim 3, characterized in that: Each suction cup (4) is equipped with a vacuum generator (6) and a pressure sensor (7).

5. A clamp for automatic bagging in a valve-mouth packaging machine according to claim 1, characterized in that: The main frame (1) is provided with a flange seat (8) on top.

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