A force feedback and highly adaptive cold stretch film wrapping machine

Abstract

The utility model discloses a kind of force feedback and high self-adaptive cold-drawing film sleeve machine, including main frame, height adjusting assembly, stretching execution mechanism, film material supply system, laser ranging sensor and control system, the left and right sides of main frame are provided with vertical guide rail, height adjusting assembly includes two sliders, slider is fixedly connected with connecting plate, screw rod and the servo motor of driving screw rod rotation, stretching execution mechanism includes several groups of clamping assembly, each group of clamping assembly includes a pair of clamping jaw, clamping slide, ball screw, stepper motor and embedded force sensor.The utility model is driven by servo motor four corner stretching clamping assembly and combines force feedback sensor, can realize the closed-loop control of film material tension, and by the height adjusting mechanism of central motion frame, different height product can be automatically adapted, the quality of sleeve film and the versatility of equipment are significantly improved, suitable for the packaging demand of multi-specification product.

Description

Technical Field

[0001] This utility model belongs to the field of packaging equipment technology, and in particular relates to a cold stretch film forming machine with force feedback and height self-adaptation. Background Technology

[0002] A wrapping machine is a machine that automatically wraps products with thin film. It is an important category of packaging machinery and equipment. It usually refers to equipment that uses heat shrink film (POF, PE, PVC, etc.) or stretch film to tightly wrap one or more products together to form an integral packaging unit through heat shrinking or wrapping stretching.

[0003] There are many types of film wrapping machines on the market. For example, a fully automatic film wrapping machine with publication number CN209719999U is disclosed on the China Patent website. This type of film wrapping machine can be used for product packaging, but it has some defects and shortcomings that need to be improved: (1) Existing automatic film wrapping packaging equipment generally suffers from uneven film stretching, loose film application, or tearing. Especially when facing products of different heights and specifications, the equipment often cannot flexibly adjust the film stretching angle and clamping position, thereby affecting the packaging quality and film utilization rate; (2) Most existing film wrapping equipment lacks a real-time feedback mechanism for stretching force, which makes it easy to damage the film during the packaging process. Therefore, in view of the above problems, the cold stretching film wrapping machine with force feedback and height self-adaptation provided by this utility model is of great significance. Utility Model Content

[0004] This invention provides a cold stretching and sleeve machine with force feedback and height self-adaptation. By combining a four-corner stretching clamping assembly driven by a servo motor with a force feedback sensor, closed-loop control of the film tension is achieved. Through the height adjustment mechanism of the central motion frame, automatic adaptation to products of different heights is achieved, significantly improving the quality of sleeve film and the versatility of the equipment. It is suitable for packaging needs of products of various specifications, thus solving the problems in the background technology.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model discloses a force feedback and height adaptive cold stretch film forming machine, comprising a main frame, a height adjustment component, a stretching actuator, a film supply system, a laser rangefinder, and a control system. Vertical guide rails are provided on the left and right sides of the main frame. The height adjustment component includes two sliders, and a connecting plate, a lead screw, and a servo motor for driving the lead screw to rotate are fixedly connected to the sliders. The stretching actuator includes several sets of clamping components. Each set of clamping components includes a pair of grippers, a clamping slide, a ball screw, a stepper motor, and an embedded force sensor.

[0007] Furthermore, the two sliders in the height adjustment assembly are symmetrically mounted on the corresponding vertical guide rails on both sides of the main frame, and the servo motor in the height adjustment assembly is fixedly mounted on the bottom of the main frame.

[0008] Furthermore, the laser rangefinder is mounted on top of the height adjustment assembly.

[0009] Furthermore, the clamping components in the tension actuator are symmetrically distributed on the connecting plate of the height adjustment component, and the embedded force sensor in the tension actuator is a high-precision tension sensor, which is installed at the end of each gripper.

[0010] The present invention has the following advantages over the prior art:

[0011] (1) In the present invention, a force feedback and height adaptive cold stretching film machine is used to achieve closed-loop control of film tension by combining a force feedback sensor with a four-corner stretching clamping assembly driven by a servo motor.

[0012] (2) The force feedback and height adaptive cold stretch film machine of this utility model can automatically adapt to products of different heights through the height adjustment mechanism of the central motion frame, which significantly improves the quality of film and the versatility of the equipment, and is suitable for the packaging needs of products of multiple specifications.

[0013] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a structural schematic diagram of a cold stretching and film-making machine with force feedback and height self-adaptation according to the present invention;

[0016] Figure 2 This is a schematic diagram of the height adjustment component in this utility model;

[0017] Figure 3 This is a schematic diagram of the tension actuator in this utility model.

[0018] The attached diagram lists the components represented by each number as follows:

[0019] 1. Main frame; 2. Height adjustment assembly; 3. Tensioning actuator; 3a. Gripper; 3b. Clamping slide; 3c. Ball screw; 3d. Stepper motor; 4. Membrane material supply system. Detailed Implementation

[0020] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be understood that the terms "relative", "one end", "inner", "lateral", "end", "both ends", "both sides", "front", "one end face", "the other end face", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0022] Please see Figure 1-3 As shown, this utility model discloses a force feedback and height adaptive cold stretching and wrapping machine, comprising a main frame 1, a height adjustment component 2, a stretching actuator 3, a film supply system 4, a laser rangefinder sensor, and a control system. Each component, through structural and electrical coordination, enables the stretching and wrapping of film for products of different heights and possesses force feedback control capabilities. The main frame 1 serves as the installation and support foundation for the entire equipment. Vertical guide rails are installed on its left and right sides to guide the height adjustment component 2 to move vertically, thereby achieving up-and-down movement. This vertical guide rail design ensures smooth movement and repeatability. The height adjustment component 2 is responsible for achieving the stretching and wrapping of film for products of different heights. The key structure of the material stretching device that automatically adjusts with the product height includes two sliders, on which a connecting plate, a lead screw, and a servo motor that drives the lead screw to rotate are fixedly connected. The stretching actuator 3 is the core unit for realizing film stretching and force feedback control. It includes several sets of clamping components. Each set of clamping components includes a pair of jaws 3a, a clamping slide 3b, a ball screw 3c, a stepper motor 3d, and an embedded force sensor. The stepper motor 3d drives the ball screw 3c to rotate, realizing the synchronous movement of the jaws 3a in the lateral direction, so as to stretch the film material to cover the product. One end of the jaws 3a is fixed and the other end is movable, which can stretch the four corners or edges of the film material at multiple points.

[0023] In the height adjustment component 2, two sliders are symmetrically installed on the corresponding vertical guide rails on both sides of the main frame 1, and the servo motor in the height adjustment component 2 is fixedly installed at the bottom of the main frame 1. The servo motor drives the lead screw to rotate through the coupling, so as to drive the slider to slide up and down along the vertical guide rail, thereby driving the height adjustment component 2 installed on the connecting plate to rise and fall as a whole, realizing the height self-adaptive function.

[0024] The laser rangefinder is installed on the top of the height adjustment assembly 2. The laser rangefinder is used for non-contact measurement of product height and can feed the measurement data back to the control system. The control system dynamically controls the servo motor according to the product height, so that the stretching mechanism is always adjusted to the optimal working height.

[0025] In the tension actuator 3, each clamping component is symmetrically distributed on the connecting plate of the height adjustment component 2. The embedded force sensor in the tension actuator 3 is a high-precision tension sensor and is installed at the end of each gripper 3a. The embedded force sensor is used to detect the tension of the film material in real time and feed the data back to the control system.

[0026] All standard parts used in the application documents can be purchased from the market. All components in this application document can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The electrical components mentioned in this document are all electrically connected to the external main controller and power supply, and the main controller is a conventional known device that can play a control role.

[0027] The working principle of this utility model is as follows:

[0028] In use, this invention positions the product below the film material via a conveying system. After the laser rangefinder measures the product height, the control system activates a servo motor to drive the height adjustment component 2 to the corresponding height. Then, a stepper motor 3d drives each gripper 3a to open outward, stretching the film material. When the film material is stretched to a preset range, an embedded force sensor detects whether the stretching force is within the set tension range. If it is too large or too small, the control system automatically adjusts the movement speed or displacement of the stepper motor 3d for fine-tuning compensation to ensure uniform and stable film tension, thereby avoiding problems such as film breakage, wrinkling, or loosening. During the entire machine operation, the control system continuously collects data from the laser rangefinder and the embedded force sensor to achieve real-time closed-loop control of the clamping height and stretching tension. This structure can adapt to height variations of products of different specifications and ensure that each stretching process is under control, thereby greatly improving packaging quality and film material utilization.

[0029] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A cold stretch film forming machine with force feedback and height self-adaptation, characterized in that, The system includes a main frame (1), a height adjustment component (2), a stretching actuator (3), a film supply system (4), a laser rangefinder sensor, and a control system. Vertical guide rails are provided on the left and right sides of the main frame (1). The height adjustment component (2) includes two sliders. A connecting plate, a lead screw, and a servo motor for driving the lead screw to rotate are fixedly connected to the sliders. The stretching actuator (3) includes several sets of clamping components. Each set of clamping components includes a pair of jaws (3a), a clamping slide (3b), a ball screw (3c), a stepper motor (3d), and an embedded force sensor.

2. The cold stretching and film-making machine with force feedback and height self-adaptation according to claim 1, characterized in that, The two sliders in the height adjustment assembly (2) are symmetrically installed on the corresponding vertical guide rails on both sides of the main frame (1), and the servo motor in the height adjustment assembly (2) is fixedly installed at the bottom of the main frame (1).

3. The cold stretching and film-making machine with force feedback and height self-adaptation according to claim 1, characterized in that, The laser rangefinder is mounted on top of the height adjustment assembly (2).

4. The cold stretching and film-making machine with force feedback and height self-adaptation according to claim 1, characterized in that, Each clamping component in the tension actuator (3) is symmetrically distributed on the connecting plate of the height adjustment component (2). The embedded force sensor in the tension actuator (3) is a high-precision tension sensor and is installed at the end of each gripper (3a).

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