A packing machine for plastic woven bag production

By designing lifting and positioning mechanisms, the problems of inaccurate positioning and poor adaptability in plastic woven bag packing machines have been solved, enabling precise compression and automated packing of bags of different specifications, thus improving the quality and efficiency of finished products.

CN224546413UActive Publication Date: 2026-07-24JINING YANZHOU DISTRICT HONGTAI PLASTIC PRODUCTS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JINING YANZHOU DISTRICT HONGTAI PLASTIC PRODUCTS CO LTD
Filing Date
2025-07-04
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing plastic woven bag packing machines lack a precise positioning mechanism, causing the material to fold and wrinkle before placement. They also cannot adapt to woven bags of different specifications and sizes, and the compression force and stroke are not adjustable, limiting their application range.

Method used

The design employs a combination of lifting mechanism, positioning mechanism, and cylinder. Through a motor-driven lead screw and worm gear transmission system, it achieves precise positioning and compression adjustment of the woven bag. Combined with the cylinder and double-door automated unloading function, it improves the accuracy and continuity of packaging.

Benefits of technology

It achieves precise positioning of woven bags of different specifications, prevents displacement during compression, improves the uniformity of finished products, and enhances packaging efficiency and continuity through automated operation.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of packing machines for plastic woven bag production, it is related to woven bag packing utensil technical field, including pedestal, the support rod of pedestal top surface installation and the compression box of installation in support rod upper end;The utility model is through the cooperation of second motor, second screw rod and locating plate, it is convenient to accurately limit different specifications plastic woven bag, improve the accuracy of material positioning before packing, to avoid offset when compression, ensure the function of packing neatness;Again through the cooperation of second worm gear and third screw rod, it is convenient to adjust the vertical position of compression operation;Finally through the cooperation of cylinder, pressing plate, fourth motor and double door, it is convenient to automatically complete compression packing and unloading action, improve the continuity and degree of automation of packing operation, realize the function of efficient compression packing plastic woven bag;Finally solve the problem of low packing efficiency, insufficient neatness of finished product caused by inaccuracy of material positioning, poor compression adaptability, low degree of automation.
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Description

Technical Field

[0001] This utility model relates to the technical field of woven bag packing tools, and in particular to a packing machine for producing plastic woven bags. Background Technology

[0002] Plastic woven bags, a common packaging material, are made from chemical plastic raw materials such as polyethylene and polypropylene. They have advantages such as light weight, high strength, corrosion resistance, and low cost, and are widely used in many industries such as agriculture, chemical industry, building materials, and food. They are used to hold various items such as fertilizers, cement, grains, and chemical raw materials. After the plastic woven bags are produced, due to their loose texture and large space occupation, they need to be compressed and packaged by baling machines to reduce their volume, facilitate centralized stacking and transportation, in order to facilitate storage, save warehouse space, reduce transportation costs, and improve transportation efficiency. Common plastic woven bag baling machines usually use hydraulic or mechanical transmission to compress the woven bags. For example, a cylinder can drive a pressure plate to press down on woven bags placed on a work platform, squeezing out the internal air and stacking them together before bundling and packaging; or a motor can drive a lead screw, gears, and other transmission components to move a compression device up and down to compress the woven bags. However, current baling machines still have many shortcomings: some lack precise positioning mechanisms when placing materials, so if the material is folded before being placed, direct compression will cause wrinkles, affecting the quality of the finished product; furthermore, some existing baling machines have poor adjustability, making it difficult to adapt to different specifications and sizes of plastic woven bags, and they cannot flexibly adjust the compression force and stroke according to actual production needs, limiting their application range. Therefore, these problems need to be addressed. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a packaging machine for the production of plastic woven bags.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a packaging machine for producing plastic woven bags, comprising a base, a support rod installed on the top surface of the base, and a compression box installed on the upper end of the support rod. A lifting mechanism is installed inside the support rod, a positioning mechanism is installed on the lifting mechanism, and a lifting platform is installed inside the compression box.

[0005] Preferably, the lifting mechanism includes a first motor installed at the bottom end of the support rod and a cavity opened at the lower end of the support rod. A first worm gear is installed at the output end of the first motor through a coupling. A first worm wheel is meshed and driven on one side of the first worm gear. A first lead screw is fixedly connected at the center of the first worm wheel. The first lead screw is rotatably installed inside the support rod, and mounting blocks are threadedly connected to the two first lead screws. The positioning mechanism is located on both sides of the mounting blocks, and the first worm gear is placed in the cavity.

[0006] Preferably, the positioning mechanism includes two positioning rods installed on both sides of the mounting block. Each positioning rod has an inclined mounting surface at both ends. A second motor is installed on the mounting surface. A second lead screw is installed at the output end of the second motor through a coupling. A positioning plate is threaded onto the second lead screw.

[0007] Preferably, a third motor is installed on one side of the upper end of the compression box, and a rotating shaft is installed on the output end of the third motor through a coupling. Two sets of second worm gears are installed on the rotating shaft, and a second worm wheel is engaged on one side of each set of second worm gears. A third lead screw is fixedly connected to the center of the second worm wheel, and the lifting platform is threadedly connected to both third lead screws.

[0008] Preferably, a cylinder is installed inside the lifting platform, a pressure plate is installed at the telescopic end of the cylinder, a double door is installed at the lower end of the pressure plate, and the two sides of the double door are respectively hinged to the two inner sides of the bottom end of the lifting platform.

[0009] Preferably, a fourth motor is installed at the bottom of the rear end face of the lifting platform, and the output end of the fourth motor is connected to the hinge shaft of the double door via a coupling.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model, through the cooperation of the second motor, the second lead screw, and the positioning plate, facilitates precise positioning of plastic woven bags of different specifications, improving the accuracy of material positioning before packaging. This prevents the woven bags from shifting during compression and ensures the neatness of the packaging. Furthermore, through the cooperation of the third motor, the second worm gear, the second worm wheel, and the third lead screw, it facilitates adjustment of the vertical position of the compression operation, improving the matching degree between the compression stroke and the material height. Finally, through the cooperation of the cylinder, the pressure plate, the fourth motor, and the double door, it facilitates the automated completion of compression packaging and unloading actions, improving the continuity and automation of the packaging operation. This enables efficient compression packaging of plastic woven bags and rapid unloading. Ultimately, it solves the problems of low packaging efficiency and insufficient neatness of finished products caused by inaccurate material positioning, poor compression adaptability, and low automation. Attached Figure Description

[0011] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall three-dimensional structure of the device proposed in this utility model; Figure 2 This is a schematic cross-sectional view of the device proposed in this utility model; Figure 3 This is a schematic cross-sectional view of the transmission box structure proposed in this utility model; Figure 4 This is a schematic cross-sectional view of the positioning mechanism proposed in this utility model; Figure 5 This is a schematic cross-sectional view of the first lifting mechanism proposed in this utility model; Figure 6 This is a schematic cross-sectional view of the second lifting mechanism proposed in this utility model; Figure 7 The present utility model proposes Figure 4 Schematic diagram of the structure of part A in the middle; Figure 8 The present utility model proposes Figure 5 Enlarged schematic diagram of the structure of part B in the middle; Figure 9 The present utility model proposes Figure 6 Enlarged schematic diagram of the structure at part C.

[0012] The numbers in the diagram are as follows: 1. Base; 2. Support rod; 3. Mounting block; 4. Positioning rod; 5. Compression box; 6. Lifting platform; 7. First motor; 8. First worm gear; 9. First worm wheel; 10. Second motor; 11. Second lead screw; 12. Positioning plate; 13. Third motor; 14. Second worm gear; 15. Second worm wheel; 16. Cylinder; 17. Pressure plate; 18. Double door; 19. Fourth motor; 20. Third lead screw; 21. First lead screw. Detailed Implementation

[0013] 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.

[0014] Example: See Figure 1-9This utility model discloses a packaging machine for producing plastic woven bags, comprising a base 1, a support rod 2 mounted on the top surface of the base 1, and a compression box 5 mounted on the upper end of the support rod 2. The base 1 facilitates the installation of the support rod 2; the support rod 2 facilitates the installation of a first lead screw 21; a lifting mechanism is installed inside the support rod 2, and a positioning mechanism is installed on the lifting mechanism; a lifting platform 6 is installed inside the compression box 5, and a cylinder 16 is installed through the lifting platform 6; the lifting mechanism includes a first motor 7 mounted at the bottom end of the support rod 2 and a cavity opened at the lower end of the support rod 2, and the first motor 7 facilitates the rotation of a first worm gear 8; the output end of the first motor 7 is mounted with the first worm gear 8 through a coupling, and the first worm gear 8 facilitates the rotation of a first worm wheel 9; the first worm gear 9 is meshed with one side of the first worm gear 8, and the first worm wheel 9 facilitates the rotation of the first lead screw 21. The first worm gear 9 has a first lead screw 21 fixedly connected to its center, which facilitates the lifting and lowering of the positioning mechanism. The first lead screw 21 is rotatably installed inside the support rod 2, and the two first lead screws 21 are threadedly connected to mounting blocks 3, which facilitate the installation of positioning rods 4. The positioning mechanism is located on both sides of the mounting blocks 3, and the first worm gear 8 is placed in the cavity. The positioning mechanism includes two positioning rods 4 installed on both sides of the mounting blocks 3, which facilitate the installation of the second motor 10. Both ends of the positioning rods 4 have inclined mounting surfaces, on which the second motor 10 is installed, which facilitates the driving of the second lead screw 11 to rotate. The output end of the second motor 10 is connected to the second lead screw 11 through a coupling, which facilitates the movement of the positioning plate 12. The second lead screw 11 is threadedly connected to the positioning plate 12. The positioning plate 12 facilitates the support of the collection bag.

[0015] In this invention, a third motor 13 is installed on one side of the upper end of the compression box 5, which facilitates the rotation of the second worm gear 14. A rotating shaft is installed at the output end of the third motor 13 via a coupling, and two sets of second worm gears 14 are mounted on the shaft, which facilitates the rotation of the second worm wheel 15. Each set of second worm gears 14 has a second worm wheel 15 meshing with it on one side, which facilitates the rotation of the third lead screw 20. The third lead screw 20 is fixedly connected to the center of the second worm wheel 15, which facilitates the lifting of the lifting platform 6. The lifting platform 6 is connected to two third lead screws 20 by uniform threads. A cylinder 16 is installed inside the lifting platform 6, which facilitates the lifting and lowering of the pressure plate 17. The pressure plate 17 is installed at the telescopic end of the cylinder 16, which facilitates the downward squeezing of the woven bag. A double door 18 is installed at the lower end of the pressure plate 17. The two sides of the double door 18 are respectively hinged to the two inner sides of the bottom end of the lifting platform 6. A fourth motor 19 is installed at the bottom end of the rear face of the lifting platform 6, which facilitates the opening and closing of the double door 18. The output end of the fourth motor 19 is connected to the hinge shaft of the double door 18 through a coupling.

[0016] Working Principle: When using this utility model, first connect the power supply to the device, then start the second motor 10, which drives the second lead screw 11 to rotate via the coupling. The positioning plate 12 on the second lead screw 11 moves linearly along the lead screw. Utilizing the structure of the two ends of the positioning rod 4 inclined towards the mounting surface, and in conjunction with the movement of the positioning plate 12, the storage bag is supported, and materials such as woven bags can be positioned to ensure accurate positioning during compression. Then, start the first motor 7, which drives the first worm 8 to rotate via the coupling. The first worm 8 meshes with the first worm wheel 9, causing the first lead screw 21 at the center of the first worm wheel 9 to rotate. Because the first lead screw 21 is threadedly connected to the mounting block 3 and is rotatably mounted inside the support rod 2, the mounting block 3 moves up and down along the first lead screw 21, realizing the lifting and lowering adjustment of the positioning mechanism. The third motor 13 starts, and its output shaft drives the second worm gear 14 to rotate. The second worm gear 14 meshes with the second worm wheel 15, causing the third lead screw 20 at the center of the second worm wheel 15 to rotate. The lifting platform 6 is threadedly connected to the two third lead screws 20, thereby realizing the lifting and lowering of the lifting platform 6 within the compression box 5 and adjusting the vertical position of the compression operation. The telescopic end of the cylinder 16 pushes the pressure plate 17 downward to compress the woven bags on the lifting platform 6. When unloading is required, the fourth motor 19 starts, driving the hinge shaft of the double door 18 to rotate, causing the double door 18 to open and complete the unloading. During compression, the double door 18 closes to ensure the compression space is sealed. Furthermore, the lifting platform 6 and the positioning plate 12 work together to prevent the woven bags from falling too high and solve the problem of deformation of the woven bags during the fall.

[0017] 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 packaging machine for producing plastic woven bags, comprising a base (1), a support rod (2) mounted on the top surface of the base (1), and a compression box (5) mounted on the upper end of the support rod (2), characterized in that: The support rod (2) is equipped with a lifting mechanism, and the lifting mechanism is equipped with a positioning mechanism. The compression box (5) is equipped with a lifting platform (6). The lifting mechanism includes a first motor (7) installed at the bottom of the support rod (2) and a cavity opened at the lower end of the support rod (2). The output end of the first motor (7) is equipped with a first worm gear (8) through a coupling. A first worm wheel (9) is meshed and driven on one side of the first worm gear (8). A first lead screw (21) is fixedly connected at the center of the first worm wheel (9).

2. The packaging machine for producing plastic woven bags according to claim 1, characterized in that: The first lead screw (21) is rotatably installed inside the support rod (2), and the two first lead screws (21) are threadedly connected to the mounting blocks (3). The positioning mechanism is located on both sides of the mounting blocks (3), and the first worm gear (8) is placed in the cavity.

3. The packaging machine for producing plastic woven bags according to claim 2, characterized in that: The positioning mechanism includes two positioning rods (4) installed on both sides of the mounting block (3). Both ends of the positioning rods (4) are provided with inclined mounting surfaces. A second motor (10) is installed on the mounting surface. A second lead screw (11) is installed at the output end of the second motor (10) through a coupling. A positioning plate (12) is threaded onto the second lead screw (11).

4. A packaging machine for producing plastic woven bags according to claim 3, characterized in that: A third motor (13) is installed on one side of the upper end of the compression box (5). The output end of the third motor (13) is connected to a rotating shaft via a coupling. Two sets of second worm gears (14) are installed on the rotating shaft. Each set of second worm gears (14) is meshed with a second worm wheel (15) on one side. A third lead screw (20) is fixed at the center of the second worm wheel (15). The lifting platform (6) is threadedly connected to both third lead screws (20).

5. A packaging machine for producing plastic woven bags according to claim 4, characterized in that: The lifting platform (6) is equipped with a cylinder (16), and a pressure plate (17) is installed at the telescopic end of the cylinder (16). A double door (18) is installed at the lower end of the pressure plate (17), and the two sides of the double door (18) are respectively hinged to the two inner sides of the bottom end of the lifting platform (6).

6. A packaging machine for producing plastic woven bags according to claim 5, characterized in that: The fourth motor (19) is installed at the bottom of the rear end face of the lifting platform (6), and the output end of the fourth motor (19) is connected to the hinge shaft of the double door (18) through a coupling.