A cling film wrapping machine

Abstract

The utility model discloses a preservative film packaging machine belongs to film packaging technical field, and the upper end edge of gantry is equipped with stand, and the middle section of stand is connected with first guide tensioning component, and the top of stand is connected with packaging paper storage cylinder through side frame, and the side frame is connected with unwinding drive component, and the output of this unwinding drive component is connected with packaging paper storage cylinder, and the packaging paper storage cylinder is stored with film cylinder packaging paper, the other side of gantry is installed with second inclined frame, and the second inclined frame and gantry are equipped with second guide tensioning component, and the side wall of second inclined frame is equipped with stable support frame, and the upper end of second inclined frame is connected with servo motor, and the output of servo motor is connected with connecting shaft. Stable support mechanism guarantees the positioning accuracy and operating stability of quick -mounting system when winding, avoids the clamping loose or winding deviation, and quick -mounting system realizes efficient replacement on the basis of stable support, reduces downtime, and improves the overall operation efficiency and stability of equipment.

Description

Technical Field

[0001] This utility model relates to the field of film packaging technology, and in particular to a food preservation film packaging machine. Background Technology

[0002] Plastic wrap is a thin film packaging product made primarily of plastic. It possesses properties such as transparency, flexibility, self-adhesion, and barrier properties, and is mainly used for food preservation, daily household storage, food delivery, and supermarket packaging. It reduces moisture loss from food and prevents cross-contamination. Common materials include: polyethylene (PE), which is safe, environmentally friendly, and low-cost, and is currently the mainstream material for food wrap; polyvinyl chloride (PVC), which has high transparency and strong adhesion, but its application in food contact is controversial due to the potential presence of plasticizers; and polyvinylidene chloride (PVDC), which has excellent oxygen and moisture barrier properties and is often used for preserving cooked food and meat, but is more expensive.

[0003] A plastic wrap production and packaging machine is an automated device that processes plastic raw materials into finished plastic wrap products and completes the packaging. Its main functions integrate raw material processing, film forming, slitting, and packaging. Its core systems include: a raw material processing system (drying and mixing resin granules to ensure uniform material distribution), an extrusion molding system (heating and melting the raw material in an extruder, forming a film through a blown film or casting die; the blown film is inflated into a bubble tube by compressed air; the casting process involves casting through a flat die head to a cooling roller), a cooling and shaping system (rapidly cooling the film using an air ring or cooling roller to ensure stable shape), a traction and winding system (traction rollers stretch the film to adjust its thickness, and a winding machine rolls the film into a large roll), a slitting system (a slitting machine cuts the large roll of film into smaller rolls of different widths), and a packaging system (automatically boxing and sealing to complete the final product packaging). The workflow typically involves: raw material preparation → melt extrusion → film forming → cooling and traction → winding and slitting → finished product packaging. The entire process is highly automated and can efficiently produce plastic wrap products of various specifications.

[0004] Currently, the disassembly and replacement process of the plastic wrap packaging machine after the packaging paper is wrapped with the plastic wrap tube relies on manual operation, with a low degree of automation. Because the packaging paper and the plastic wrap tube are tightly attached or have a complex fixing structure, manual peeling and adjustment are required, and the disassembly of a single tube takes a long time. The process is arduous, as the packaging paper adheres tightly to the roll after winding, requiring significant external force for disassembly, which can easily lead to operator fatigue. Frequent replacements also exacerbate the workload. Replacement efficiency is low, as repositioning and installing new packaging paper after disassembly involves multiple processes such as centering and fixing, which is time-consuming and can cause equipment to idle, reducing production continuity. There is also a high risk of damage; improper force during disassembly can easily deform the plastic wrap roll, scratch its surface, or leave torn packaging paper residue, affecting subsequent packaging quality and product appearance. Finally, it increases production costs, as the time spent on disassembly and replacement directly extends the production cycle, reduces equipment utilization, and simultaneously increases labor costs and material losses (such as damaged packaging paper). Utility Model Content

[0005] The main objective of this invention is to provide a food preservation film packaging machine that can effectively solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A plastic wrap packaging machine includes a frame, a first inclined frame, and a unwinding drum, wherein the unwinding drum is mounted on one side of the frame via the first inclined frame; The upper edge of the platform is provided with a column, and the middle section of the column is connected to a first guide tensioning component. The top of the column is connected to a packaging paper storage tube through a side frame, and an unwinding drive component is connected to the side frame. The output end of the unwinding drive component is connected to the packaging paper storage tube, and the packaging paper storage tube contains film tube packaging paper. A second inclined frame is installed on the other side of the platform. A second guide tensioning assembly is provided between the second inclined frame and the platform. A stable support frame is provided on the side wall of the second inclined frame. A servo motor is connected to the upper end of the second inclined frame. A connecting shaft is connected to the output end of the servo motor. The connecting shaft passes through an opening on the second inclined frame. A stable docking shaft aligned with the connecting shaft is provided on the stable docking shaft. A quick-release storage component for cling film is provided between the stable docking shaft and the connecting shaft. Plugs are provided at both ends of the quick-release storage component for cling film. The plugs are inserted into the notches of the stable docking shaft and the connecting shaft, and the three components are quickly assembled and disassembled through screws and clamping parts.

[0007] In a further preferred embodiment, the first inclined frame, the second inclined frame, and the column are bolted to the platform. The inclination angle of the first inclined frame and the second inclined frame is 30 degrees. The bracket of the second guide tensioning assembly is bolted to the platform. The first guide tensioning assembly is bolted to the column. The side frame and the column are fixed with bolts. In a further preferred embodiment, the unwinding drive assembly is bolted to the side frame, and the output end of the unwinding drive assembly is connected to the packaging paper storage cylinder to drive the unwinding operation of the packaging paper on the film cylinder of the packaging paper storage cylinder. In a further preferred embodiment, the unwinding drum holds the plastic wrap to be rolled up. The plastic wrap to be rolled up is stored on the quick-release plastic wrap storage component through the second guiding tensioning component. The quick-release plastic wrap storage component consists of two semi-cylinders, which form a cylindrical storage tube. The plastic wrap is inserted into the gap between the two semi-cylinders to achieve clamping. In a further preferred embodiment, the plug is cylindrical in shape, and a wedge-shaped block is provided at the end of the cylindrical shape. The wedge-shaped block is embedded in the insertion port of the connecting shaft and the stabilizing docking shaft. The screw is placed at the end of the plug, and the screw and the plug are perpendicular to each other. Both the screw and the plug are split from the center line and are integrated with the semi-cylindrical design of the quick-release storage component for cling film, which facilitates the quick-release storage component for cling film. In a further preferred embodiment, the stable docking shaft is connected to the stable support frame via bearings, and a limiting sleeve is provided on the shaft of the stable docking shaft. The limiting sleeve is designed in a "T" shape to restrict the stable docking shaft to the stable support frame, and the stable support frame is installed on the second inclined frame by bolts.

[0008] Compared with the prior art, the present invention has the following beneficial effects: The stabilizing support mechanism provides a stable support base for the winding end, ensuring that the connecting shaft and the stabilizing docking shaft are aligned. Through bearing support and "T"-shaped limiting sleeve, axial movement of the stabilizing docking shaft is prevented, ensuring a smooth winding process for the cling film.

[0009] The quick-installation system for cling film features a split structure with plugs and screws, enabling rapid installation and removal of cling film rolls. The film head is reliably clamped into the semi-cylindrical gap, ensuring stable installation and greatly improving the efficiency of changing film rolls.

[0010] The stable support mechanism ensures accurate positioning and stable operation of the quick-assembly system during winding, preventing loose clamping or winding deviation. Based on the stable support, the quick-assembly system enables efficient replacement, reduces downtime, and improves the overall operating efficiency and stability of the equipment. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a front view of the overall structure of this utility model; Figure 3 The diagram shows the inclined frame, stable support mechanism, quick-release storage component for cling film, and quick-release system of this utility model. Figure 4 for Figure 3 Enlarged diagram of point A in the middle.

[0012] In the diagram: 1. Stand; 2. Column; 3. Side frame; 4. Packaging paper storage tube; 5. Unwinding drive assembly; 6. First guide tensioning assembly; 7. First inclined frame; 8. Unwinding tube; 9. Second guide tensioning assembly; 10. Second inclined frame; 11. Stabilizing support frame; 12. Servo motor; 13. Connecting shaft; 14. Quick-release storage component for cling film; 15. Plug; 16. Screw; 17. Clamping component; 18. Stabilizing docking shaft; 19. Cling film to be rolled up; 20. Film tube packaging paper. Detailed Implementation

[0013] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0014] like Figure 1 - Figure 4As shown, a plastic wrap packaging machine mainly includes a frame 1, a first inclined frame 7, and a roll unwinding drum 8, wherein the roll unwinding drum 8 is installed at an angle on one side of the frame 1 via the first inclined frame 7, and is used to place the plastic wrap raw material to be rolled up. A column 2 is vertically installed at the upper edge of the frame 1. A first guide tensioning component 6 is bolted to the middle section of the column 2 for tensioning and guiding the packaging paper. A packaging paper storage cylinder 4 is connected to the top of the column 2 through a side frame 3. An unwinding drive component 5 is fixedly installed on the side frame 3. The output end of the unwinding drive component 5 is connected to the packaging paper storage cylinder 4, which can drive it to rotate, thereby achieving stable unwinding of the film tube packaging paper 20. A second inclined frame 10 is installed on the other side of the frame 1. A second guide tensioning assembly 9 is provided between the second inclined frame 10 and the frame 1 for guiding and tensioning the plastic wrap. A stable support frame 11 is fixed to the side wall of the second inclined frame 10. A servo motor 12 is connected to the top of the servo motor 12. A connecting shaft 13 is installed at the output end of the servo motor 12. The connecting shaft 13 passes through a pre-set opening on the second inclined frame 10. A stable docking shaft 18 is provided on the stable support frame 11, and the axes of the two are aligned. A quick-install plastic wrap storage component 14 is provided between the stable docking shaft 18 and the connecting shaft 13 for quickly installing and fixing the rolled plastic wrap. The storage component has plugs 15 at both ends, which can be inserted into the notches at the ends of the stable docking shaft 18 and the connecting shaft 13, respectively. The screw 16 and the clamping component 17 enable the three to be quickly locked and disassembled, which greatly improves the efficiency of changing the film roll.

[0015] The first inclined frame 7, the second inclined frame 10, and the column 2 are all detachably installed on the platform 1 by bolts. The inclination angle of the first inclined frame 7 and the second inclined frame 10 is 30 degrees, which is conducive to the smooth conveying of materials. The bracket of the second guide tensioning component 9 is fixed to the platform 1 by bolts. The first guide tensioning component 6 is also installed in the middle section of the column 2 by bolts. The side frame 3 is fastened to the top of the column 2 by bolts. The unwinding drive assembly 5 is bolted to the side frame 3, and its output shaft is connected to the packaging paper storage cylinder 4, which can provide stable torque to drive the film cylinder packaging paper 20 to perform unwinding operations. The unwinding drum 8 holds the plastic wrap 19 to be rolled up. After being guided and tensioned by the second guide tensioning component 9, the plastic wrap is finally rolled up and installed on the quick-release plastic wrap storage component 14. The quick-release plastic wrap storage component 14 adopts a split structure, which is composed of two semi-cylinders to form a complete cylindrical storage tube. The plastic wrap head can be inserted into the gap between the two semi-cylinders and reliably clamped and fixed. The plug 15 is a cylindrical structure with a wedge-shaped block at its end, which can cooperate with the insertion port on the connecting shaft 13 and the stable docking shaft 18 to achieve radial positioning; the screw 16 is located at the end of the plug 15, and its axis is perpendicular to the plug 15; both the screw 16 and the plug 15 are divided into two parts along the center line, which are integrally formed with two semi-cylinders, so that the storage item can be quickly opened or closed when the screw 16 is loosened, which facilitates the efficient clamping of the plastic wrap; The stabilizing docking shaft 18 is supported on the stabilizing support frame 11 by bearings. A limiting sleeve is installed on its shaft. The limiting sleeve has a "T" shape structure and is used to axially position the stabilizing docking shaft 18 to prevent it from moving. The stabilizing support frame 11 is firmly installed on the side wall of the second inclined frame 10 by bolts, providing a stable support foundation for the entire winding end.

[0016] The first inclined frame 7, the second inclined frame 10, and the column 2 are bolted to the platform 1, with the inclination angles of the first inclined frame 7 and the second inclined frame 10 both being 30 degrees. A first guide tensioning assembly 6 is bolted to the middle section of the column 2. A side frame 3 is bolted to the top of the column 2, and a roll-up drive assembly 5 is fixedly installed on the side frame 3. The output end of the roll-up drive assembly 5 is connected to the packaging paper storage tube 4, completing the installation of the packaging paper storage tube 4. A roll-up tube 8 is installed on the first inclined frame 7 to hold the plastic wrap material to be rolled. The bracket of the second guide tensioning assembly 9 is bolted to the platform 1 between the platform 1 and the second inclined frame 10. A stabilizing support frame 11 is bolted to the side wall of the second inclined frame 10. A servo motor 12 is installed at the top, and a connecting shaft 13 is assembled at the output end of the servo motor 12. The connecting shaft 13 passes through a pre-set opening on the second inclined frame 10. A stable docking shaft 18 is supported by bearings on the stable support frame 11 to align it with the axis of the connecting shaft 13. A "T"-shaped limiting sleeve is installed on the shaft of the stable docking shaft 18 for axial positioning. A quick-release plastic wrap storage component 14 is installed between the connecting shaft 13 and the stable docking shaft 18, so that the plugs 15 at both ends of the storage component are inserted into the notches at the ends of the connecting shaft 13 and the stable docking shaft 18, respectively. The three are locked together by a screw 16 and a clamping component 17. The unwinding drive assembly 5 is installed on the side frame 3 by bolts, and its output shaft is connected to the packaging paper storage cylinder 4 to ensure that stable torque can be provided.

[0017] The plastic wrap 19 to be rolled is placed on the unwinding drum 8, and the film head of the plastic wrap is led out and guided and tensioned by the second guide tensioning component 9. The tensioned plastic wrap is then wound and installed on the quick-release plastic wrap storage component 14, and the film head is clamped and fixed by the gap between the two semi-cylindrical parts of the storage component. The servo motor 12 is started to drive the connecting shaft 13 to rotate, which in turn drives the quick-release plastic wrap storage component 14 to rotate, thereby realizing the winding of the plastic wrap. At the same time, the unwinding drive component 5 is started to drive the packaging paper storage drum 4 to rotate, thereby realizing the stable unwinding of the film drum packaging paper 20, in conjunction with the plastic wrap winding operation.

[0018] The quick-release storage unit 14 for cling film is replaced as follows: Loosen the screws 16 at both ends of the quick-release storage unit 14, remove the clamping piece 17, and release the locking of the plug 15 to the connecting shaft 13 and the end notch of the stabilizing docking shaft 18; pull the storage unit axially out of the connecting shaft 13 and the stabilizing docking shaft 18; since the storage unit has a split structure (two semi-cylinders combined), and both the screws 16 and the plug 15 are divided into two parts along the center line and are integrally formed with the two semi-cylinders respectively, after loosening the screws 16, the storage unit can be directly replaced. Open the two semi-cylinders and remove the old film roll that has been wound. Insert the new plastic wrap head into the gap between the two semi-cylinders and close the two semi-cylinders to secure the film head. Align the plugs 15 at both ends of the closed storage piece with the notches at the ends of the connecting shaft 13 and the stabilizing docking shaft 18 and insert them (the wedge-shaped block at the end of the plug 15 cooperates with the insertion port to achieve radial limiting). Tighten the screw 16 and lock the plug 15, connecting shaft 13 and stabilizing docking shaft 18 through the clamping member 17 to complete the replacement.

[0019] All standard parts used in this utility model can be purchased from the market, and irregular parts 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, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0020] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A plastic wrap packaging machine, comprising a frame (1), a first inclined frame (7), and an unwinding drum (8), wherein the unwinding drum (8) is mounted on one side of the frame (1) via the first inclined frame (7), characterized in that: The upper edge of the frame (1) is provided with a column (2), and the middle section of the column (2) is connected to a first guide tensioning component (6). The top of the column (2) is connected to a packaging paper storage tube (4) through a side frame (3), and a unwinding drive component (5) is connected to the side frame (3). The output end of the unwinding drive component (5) is connected to the packaging paper storage tube (4), and the packaging paper storage tube (4) stores film tube packaging paper (20). A second inclined frame (10) is installed on the other side of the platform (1). A second guide tensioning component (9) is provided between the second inclined frame (10) and the platform (1). A stable support frame (11) is provided on the side wall of the second inclined frame (10). A servo motor (12) is connected to the upper end of the second inclined frame (10). A connecting shaft (13) is connected to the output end of the servo motor (12). The connecting shaft (13) passes through the opening on the second inclined frame (10). A stable docking shaft (18) aligned with the connecting shaft (13) is provided on the stable docking shaft (18) and the connecting shaft (13). A quick-release storage component (14) for cling film is provided between the stable docking shaft (18) and the connecting shaft (13). Plugs (15) are provided at both ends of the quick-release storage component (14). The plugs (15) are inserted into the notches of the stable docking shaft (18) and the connecting shaft (13), and the three components are quickly disassembled and assembled through the screw (16) and the clamping component (17).

2. The food preservation film packaging machine according to claim 1, characterized in that: The first inclined frame (7), the second inclined frame (10), and the column (2) are bolted to the platform (1). The inclination angle of the first inclined frame (7) and the second inclined frame (10) is thirty degrees. The bracket of the second guide tensioning assembly (9) is bolted to the platform (1). The first guide tensioning assembly (6) is bolted to the column (2). The side frame (3) is fixed to the column (2) with bolts.

3. The food preservation film packaging machine according to claim 2, characterized in that: The unwinding drive assembly (5) is mounted on the side frame (3) by bolts. The output end of the unwinding drive assembly (5) is connected to the packaging paper storage cylinder (4) to drive the unwinding operation of the film cylinder packaging paper (20) on the packaging paper storage cylinder (4).

4. A food preservation film packaging machine according to claim 3, characterized in that: The unwinding drum (8) holds the plastic wrap (19) to be rolled up. The plastic wrap (19) to be rolled up is stored on the quick-release plastic wrap storage component (14) through the second guide tensioning component (9). The quick-release plastic wrap storage component (14) consists of two semi-cylinders, which form a cylindrical storage tube. The plastic wrap is inserted into the gap between the two semi-cylinders to achieve clamping.

5. A food preservation film packaging machine according to claim 4, characterized in that: The plug (15) is cylindrical and has a wedge-shaped block at the end. The wedge-shaped block is embedded in the insertion port of the connecting shaft (13) and the stabilizing docking shaft (18). The screw (16) is placed at the end of the plug (15). The screw (16) and the plug (15) are perpendicular to each other. The screw (16) and the plug (15) are split from the center line and are integrated with the semi-cylindrical design of the quick-release storage piece (14) of the plastic wrap, which facilitates the quick-release storage piece (14) of the plastic wrap.

6. A food preservation film packaging machine according to claim 5, characterized in that: The stable docking shaft (18) is connected to the stable support frame (11) by bearings. The shaft of the stable docking shaft (18) is provided with a limiting sleeve. The limiting sleeve is designed in a "T" shape to restrict the stable docking shaft (18) to the stable support frame (11). The stable support frame (11) is installed on the second inclined frame (10) by bolts.

Images