Sealing equipment for polypropylene woven bag production

Abstract

The utility model relates to sealing equipment for polypropylene woven bag production, and belongs to the field of polypropylene woven bag production. Comprising a mounting frame, a first electric cylinder fixedly connected to the inner top wall of the mounting frame, an upper heat sealing plate fixedly connected to the movable end of the first electric cylinder, a supporting frame fixedly connected to the inner rear side wall of the mounting frame, a second electric cylinder fixedly connected to the inner bottom wall of the supporting frame and a lower heat sealing plate fixedly connected to the movable end of the second electric cylinder. A displacement structure used for conveying the polypropylene woven bag to a designated position for sealing is arranged on the left side of the mounting frame and comprises a connecting frame fixedly connected to the left side of the mounting frame. According to the sealing equipment for polypropylene woven bag production, automatic conveying of polypropylene woven bags is achieved through a displacement structure, the preparation time before sealing is greatly shortened, meanwhile, the heat sealing plate driven by the electric cylinder rapidly and accurately completes the sealing action, the overall process is efficient and smooth, and the overall efficiency of a production line is remarkably improved.

Description

Technical Field

[0001] The utility model relates to sealing equipment for the production of polypropylene woven bags, belonging to the field of polypropylene woven bag production. Background Art

[0002] In the production process of polypropylene woven bags, sealing is one of the key process links and has a direct impact on product quality and production efficiency.

[0003] However, this critical process has long relied on manual labor, a situation that not only limits further improvements in production efficiency but also poses challenges to product quality and safety on multiple fronts. Specifically, while manual sealing offers flexibility, it's difficult to guarantee consistent sealing standards for every bag. This leads to inconsistent sealing quality, potentially causing problems like loose seals and easy tearing, which directly impacts product performance and shelf life. Furthermore, manual operation is labor-intensive and requires high worker skill. As labor costs rise, the economic viability of this method is gradually diminishing. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the shortcomings of the existing technology, the utility model provides a sealing device for the production of polypropylene woven bags, which has the advantages of improving sealing efficiency and reducing manual labor intensity.

[0006] (2) Technical solution

[0007] To achieve the above-mentioned purpose of improving sealing efficiency and reducing manual labor intensity, the utility model provides the following technical solution: a sealing device for producing polypropylene woven bags, comprising a mounting frame, a first electric cylinder fixedly connected to the top wall of the mounting frame, an upper heat-sealing plate fixedly connected to the movable end of the first electric cylinder, a support frame fixedly connected to the rear side wall of the mounting frame, a second electric cylinder fixedly connected to the bottom wall of the support frame, and a lower heat-sealing plate fixedly connected to the movable end of the second electric cylinder, wherein a displacement structure for delivering the polypropylene woven bag to a designated position for sealing is provided on the left side of the mounting frame;

[0008] The displacement structure includes a connecting frame fixedly connected to the left side of the installation frame, a servo motor fixedly connected to the front of the connecting frame, a threaded rod fixedly connected to the output shaft of the servo motor, a threaded block threadedly connected to the outside of the threaded rod, a connecting block fixedly connected to the upper surface of the threaded block, a connecting strip fixedly connected to the right side of the connecting block, a support fixedly connected to the right side of the connecting strip, two support rods fixedly connected to the upper surface of the support, a placement plate fixedly connected between the top ends of the two support rods, and a pressure plate arranged on the upper surface of the placement plate.

[0009] Furthermore, the upper heat sealing plate and the lower heat sealing plate have the same size, and the position of the upper heat sealing plate corresponds to the position of the lower heat sealing plate.

[0010] Furthermore, a sliding groove adapted to the connecting block is provided on the upper surface of the connecting frame, and a sliding opening adapted to the connecting strip is provided on the left side wall of the installation frame.

[0011] Furthermore, the left side and right side of the bottom of the support are fixedly connected to support blocks, and the inner sides of the two support blocks are slidably connected to guide rods, and the front and rear ends of the guide rods are bent downward and fixedly connected to the inner bottom wall of the mounting frame.

[0012] Furthermore, a fan is fixedly connected to the inner bottom wall of the support, and an air outlet adapted to the air outlet end of the fan is provided on the upper surface of the support.

[0013] Furthermore, the two support rods are respectively located on the left and right sides of the support frame, and the outer sides of the two support rods are slidably connected with sliders, and the opposite side walls of the two sliders are fixedly connected with fixed plates, and the right side wall of the left fixed plate is fixedly connected to the left side wall of the pressure plate, and the left side wall of the right fixed plate is fixedly connected to the right side wall of the pressure plate.

[0014] Furthermore, heat sealing openings are provided on the inner sides of the placement plate and the pressure plate, and the heat sealing openings are adapted to the upper heat sealing plate and the lower heat sealing plate, and the two heat sealing openings are communicated with each other.

[0015] (3) Beneficial effects

[0016] Compared with the existing technology, the utility model provides a sealing device for the production of polypropylene woven bags, which has the following beneficial effects:

[0017] This sealing equipment for polypropylene woven bag production realizes automatic transportation of polypropylene woven bags through a displacement structure, greatly shortening the preparation time before sealing. At the same time, the heat-sealing plate driven by the electric cylinder completes the sealing action quickly and accurately. The overall process is efficient and smooth, significantly improving the overall efficiency of the production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a front view of the utility model;

[0020] Figure 3 It is a three-dimensional diagram of the installation frame and the connection frame in the structure of the utility model;

[0021] Figure 4 It is a three-dimensional diagram of the support in the structure of the utility model.

[0022] In the figure: 1. Mounting frame; 2. First electric cylinder; 3. Upper heat sealing plate; 4. Support frame; 5. Second electric cylinder; 6. Lower heat sealing plate; 7. Connecting frame; 8. Servo motor; 9. Threaded rod; 10. Threaded block; 11. Connecting block; 12. Connecting strip; 13. Support; 14. Support rod; 15. Placement plate; 16. Press plate; 17. Support block; 18. Guide rod; 19. Fan; 20. Slider; 21. Fixing plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figures 1 to 4 A sealing device for producing polypropylene woven bags includes an installation frame 1, a first electric cylinder 2 fixedly connected to the inner top wall of the installation frame 1, an upper heat-sealing plate 3 fixedly connected to the movable end of the first electric cylinder 2, a support frame 4 fixedly connected to the inner rear side wall of the installation frame 1, a second electric cylinder 5 fixedly connected to the inner bottom wall of the support frame 4, and a lower heat-sealing plate 6 fixedly connected to the movable end of the second electric cylinder 5. A displacement structure for delivering the polypropylene woven bag to a designated position for sealing is provided on the left side of the installation frame 1.

[0025] like Figure 1 As shown, the displacement structure includes a connecting frame 7 fixedly connected to the left side of the mounting frame 1, a servo motor 8 fixedly connected to the front of the connecting frame 7, a threaded rod 9 fixedly connected to the output shaft of the servo motor 8, a threaded block 10 threadedly connected to the outside of the threaded rod 9, a connecting block 11 fixedly connected to the upper surface of the threaded block 10, a connecting strip 12 fixedly connected to the right side of the connecting block 11, a support 13 fixedly connected to the right side of the connecting strip 12, two support rods 14 fixedly connected to the upper surface of the support 13, a placement plate 15 fixedly connected between the top ends of the two support rods 14, and a pressure plate 16 arranged on the upper surface of the placement plate 15.

[0026] It should be noted that the upper heat-sealing plate 3 and the lower heat-sealing plate 6 have the same size, and the position of the upper heat-sealing plate 3 corresponds to the position of the lower heat-sealing plate 6 in the upper and lower directions.

[0027] A sliding groove adapted to the connecting block 11 is provided on the upper surface of the connecting frame 7 , and a sliding opening adapted to the connecting strip 12 is provided on the left side wall of the mounting frame 1 .

[0028] The left and right sides of the bottom of the support 13 are fixedly connected to support blocks 17, and the inner sides of the two support blocks 17 are slidably connected to guide rods 18. The front and rear ends of the guide rods 18 are bent downward and fixedly connected to the inner bottom wall of the mounting frame 1.

[0029] The inner bottom wall of the support 13 is fixedly connected to the fan 19 , and the upper surface of the support 13 is provided with an air outlet adapted to the air outlet end of the fan 19 .

[0030] The two support rods 14 are respectively located on the left and right sides of the support frame 4. The outer sides of the two support rods 14 are slidably connected with sliders 20. The opposite side walls of the two sliders 20 are fixedly connected with fixed plates 21, and the right side wall of the left fixing plate 21 is fixedly connected to the left side wall of the pressure plate 16, and the left side wall of the right fixing plate 21 is fixedly connected to the right side wall of the pressure plate 16.

[0031] Heat sealing openings are provided on the inner side of the placement plate 15 and the inner side of the pressing plate 16 , and the heat sealing openings are adapted to the upper heat sealing plate 3 and the lower heat sealing plate 6 , and the two heat sealing openings are connected.

[0032] In addition, the heating elements inside the upper heat sealing plate 3 and the lower heat sealing plate 6 should be equipped with a precise temperature control system, which can achieve rapid response and stable control of temperature through the PID adjustment algorithm. This can not only ensure the consistency of heat sealing quality, but also effectively extend the service life of the heat sealing plate and heating elements.

[0033] The working principle of the above embodiment is:

[0034] When sealing is required, the polypropylene woven bag is placed on the placement plate 15, and the part to be sealed is in the heat sealing position. Then, the fixing plate 21 slides downward along the support rod 14 through the slider 20, thereby driving the pressing plate 16 to move downward, thereby positioning the polypropylene woven bag through the pressing plate 16;

[0035] Next, the servo motor 8 is started, and its output shaft drives the threaded rod 9 to rotate. Since the threaded block 10 is threadedly connected to the threaded rod 9, the threaded block 10 will move along the axial direction of the threaded rod 9. During this process, the connecting block 11 moves synchronously with the threaded block 10, and drives the support 13 and the placement plate 15 and the pressure plate 16 installed on the top of the support 13 to slide along the left wall of the installation frame 1 through the connecting bar 12. At the same time, the support block 17 and the guide rod 18 at the bottom of the support 13 provide additional support for the support 13, and the support block 17 and the guide rod 18 are slidably connected to ensure the stability of the support 13 during the movement.

[0036] When the support 13 drives the placement plate 15 to move to the designated position, the first electric cylinder 2 and the second electric cylinder 5 are activated simultaneously, respectively pushing the upper heat-sealing plate 3 and the lower heat-sealing plate 6 toward the heat-sealing position. When the upper heat-sealing plate 3 and the lower heat-sealing plate 6 contact and press the sealing area of ​​the woven bag, the heating elements inside the heat-sealing plates start working, transferring heat to the plastic layer of the woven bag through heat conduction, causing it to melt and bond together;

[0037] After sealing is completed, the displacement structure is started again to return the polypropylene woven bag to its initial position. Then, the fan 19 in the support 13 is started to blow cold air to the sealing area of ​​the woven bag through the air outlet to accelerate the cooling process and help the sealing area to quickly set.

[0038] The electrical components mentioned in this article are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device that controls a computer, etc., and the existing public power connection technology is not described in detail in this article.

[0039] It should be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not preclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sealing device for producing polypropylene woven bags, comprising a mounting frame (1), a first electric cylinder (2) fixedly connected to the inner top wall of the mounting frame (1), an upper heat-sealing plate (3) fixedly connected to the movable end of the first electric cylinder (2), a supporting frame (4) fixedly connected to the inner rear side wall of the mounting frame (1), a second electric cylinder (5) fixedly connected to the inner bottom wall of the supporting frame (4), and a lower heat-sealing plate (6) fixedly connected to the movable end of the second electric cylinder (5), characterized in that: The left side of the installation frame (1) is provided with a displacement structure for delivering the polypropylene woven bag to a designated position for sealing; The displacement structure comprises a connection frame (7) fixedly connected to the left side of the installation frame (1), a servo motor (8) fixedly connected to the front of the connection frame (7), a threaded rod (9) fixedly connected to the output shaft of the servo motor (8), a threaded block (10) threadedly connected to the outside of the threaded rod (9), a connection block (11) fixedly connected to the upper surface of the threaded block (10), a connection bar (12) fixedly connected to the right side of the connection block (11), a support (13) fixedly connected to the right side of the connection bar (12), two support rods (14) fixedly connected to the upper surface of the support (13), a placement plate (15) fixedly connected between the top ends of the two support rods (14), and a pressure plate (16) arranged on the upper surface of the placement plate (15).

2. The sealing device for producing polypropylene woven bags according to claim 1, characterized in that: The upper heat sealing plate (3) and the lower heat sealing plate (6) have the same size, and the position of the upper heat sealing plate (3) corresponds to the position of the lower heat sealing plate (6) above and below.

3. The sealing device for producing polypropylene woven bags according to claim 1, characterized in that: The upper surface of the connecting frame (7) is provided with a sliding groove adapted to the connecting block (11), and the left side wall of the installation frame (1) is provided with a sliding opening adapted to the connecting strip (12).

4. The sealing device for producing polypropylene woven bags according to claim 1, characterized in that: The left side and the right side of the bottom of the support (13) are fixedly connected to support blocks (17), and the inner sides of the two support blocks (17) are slidably connected to guide rods (18), and the front and rear ends of the guide rods (18) are bent downward and fixedly connected to the inner bottom wall of the installation frame (1).

5. The sealing device for producing polypropylene woven bags according to claim 1, characterized in that: The inner bottom wall of the support (13) is fixedly connected to a fan (19), and the upper surface of the support (13) is provided with an air outlet adapted to the air outlet end of the fan (19).

6. The sealing device for producing polypropylene woven bags according to claim 1, characterized in that: The two support rods (14) are respectively located on the left and right sides of the support frame (4); the outer sides of the two support rods (14) are slidably connected to sliders (20); the opposite side walls of the two sliders (20) are fixedly connected to fixed plates (21); the right side wall of the left fixed plate (21) is fixedly connected to the left side wall of the pressure plate (16); and the left side wall of the right fixed plate (21) is fixedly connected to the right side wall of the pressure plate (16).

7. The sealing device for producing polypropylene woven bags according to claim 1, characterized in that: The inner side of the placement plate (15) and the inner side of the pressing plate (16) are both provided with heat-sealing openings, and the heat-sealing openings are adapted to the upper heat-sealing plate (3) and the lower heat-sealing plate (6), and the two heat-sealing openings are connected.

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