Plastic packaging mechanism for packaging bag production

Abstract

The utility model discloses a plastic packaging mechanism for packaging bag production, and relates to the technical field of packaging bag production. The device comprises a mounting plate, a screw rod is arranged above the mounting plate, a motor is arranged at one end of the screw rod, leveling rods are symmetrically arranged on one side of the screw rod, a lower plastic sealing strip is arranged on the lower side, corresponding to the interior of the mounting plate, of one side, away from the screw rod, of each leveling rod, and an upper plastic sealing strip is arranged above the lower plastic sealing strip. An electric push rod used for pushing the upper plastic sealing strip is arranged above the upper plastic sealing strip, and a mounting frame is fixed to the upper end of the electric push rod. A fan is fixed to the upper wall of the mounting frame, an air outlet box is arranged on one side of the mounting frame, an air outlet groove is formed in the side wall of the air outlet box, and a pressing plate is arranged on the side, away from the air outlet box, of the upper plastic sealing strip. According to the packaging bag flattening device, the flattening rod moves on the inner side of the flattening end of the packaging bag to straighten and flatten the flattening end of the packaging bag, the condition that the flattening part of the packaging bag is wrinkled is avoided, air flow generated by the fan acts on a plastic package part for rapid heat dissipation, and the plastic package part of the packaging bag is rapidly solidified.

Description

Technical Field

[0001] The utility model belongs to the technical field of packaging bag production, in particular to a plastic sealing mechanism for packaging bag production. Background Art

[0002] Fertilizer packaging bags are bags specially used for packaging and transporting fertilizers. They are usually made of plastic or composite materials, and have the characteristics of moisture-proof, leak-proof, and wear-resistant. They can effectively protect fertilizers from moisture, sunlight and the external environment. Usually, fertilizer packaging bags have two layers. The outer layer mainly plays a wear-resistant role, and its surface is printed with relevant information such as the brand, model, and instructions for use of the fertilizer. The inner layer mainly plays a moisture-proof role, and during the production of the inner layer, one end of it needs to be plastic-sealed using a plastic sealing mechanism.

[0003] After searching, the authorization announcement number CN219338784U and the authorization announcement date 2023.07.14 disclose a plastic sealing mechanism for fertilizer bag production, including a base, a plurality of groups of support columns are arranged on the surface of the base, a baffle is fixedly connected to one of the support columns, a conveying assembly is arranged between the support columns, support legs are arranged at the four corners of the base, a plastic sealing box is arranged on the surface of the base, an adjustment device is arranged inside the plastic sealing box, and a leveling device is also arranged on the adjustment device. By using the adjustment device to adjust the position of the fertilizer bag, and by using the leveling device to press and level the fertilizer bag, the plastic sealing effect of the fertilizer bag is effectively improved, and the entire plastic sealing mechanism becomes fully automatic, which saves production costs and reduces manpower waste.

[0004] However, the existing technology has the following shortcomings:

[0005] 1. When the above-mentioned plastic sealing mechanism for fertilizer bag production is used, after the packaging bag is conveyed to a suitable position by the conveying assembly, the packaging belt is pushed to the baffle position by the adjusting plate, so that the pressing plate presses the fertilizer bag, and then the packaging bag is flattened by the leveling block, and finally the upper plastic sealing strip and the lower plastic sealing strip are used to perform the plastic sealing operation. However, in actual use, since the material of the packaging bag is relatively soft, the leveling block can only level and adjust the inclination of the end of the packaging belt, and the overlapping part of the packaging bag may be wrinkled after leveling, resulting in poor stability of the plastic sealing part of the packaging bag;

[0006] 2. When the above-mentioned plastic sealing mechanism for fertilizer bag production is in use, the plastic sealing process can be carried out by making the upper plastic sealing strip and the lower plastic sealing strip contact with the packaging bag. However, after the plastic sealing is completed, after the upper plastic sealing strip and the lower plastic sealing strip are out of contact with the packaging bag, the plastic sealing part is still in a high temperature state and cannot be quickly solidified, which is inconvenient to use. Utility Model Content

[0007] The utility model aims to provide a plastic sealing mechanism for packaging bag production, wherein a flattening rod is located at the inner side of the flattening end of the packaging bag and moves to straighten and flatten the flattening end of the packaging bag, and a fan generates airflow to act on the plastic sealing part to quickly dissipate heat, thereby solving the problem that wrinkles may appear on the overlapping parts of the packaging bag after flattening in the prior art, resulting in poor stability of the plastic sealing part of the packaging bag, and the problem that after the upper plastic sealing strip and the lower plastic sealing strip of the prior art are both out of contact with the packaging bag, the plastic sealing part is still in a high temperature state and cannot be quickly solidified, resulting in inconvenience in use.

[0008] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0009] The utility model is a plastic sealing mechanism for packaging bag production, comprising a mounting plate, a screw is arranged above the mounting plate, and the screw threads on both sides of the screw are in opposite directions, a motor is arranged at one end of the screw, a leveling rod is symmetrically arranged on one side of the screw, a lower plastic sealing strip is arranged on the lower side of the mounting plate corresponding to the inside of the side of the leveling rod away from the screw, an upper plastic sealing strip is arranged above the lower plastic sealing strip, an electric push rod for pushing the upper plastic sealing strip is arranged above the upper plastic sealing strip, a mounting frame is fixed to the upper end of the electric push rod, a fixing plate is arranged below the mounting plate, and the lower end of the mounting frame is fixedly connected to the fixing plate;

[0010] A fan is fixed on the upper wall of the mounting frame, an air outlet box is arranged on one side of the mounting frame, an air outlet slot is opened on the side wall of the air outlet box, a pressure plate is arranged on the side of the upper plastic sealing strip away from the air outlet box, and both the air outlet box and the pressure plate are located above the mounting plate.

[0011] Furthermore, limiting sleeves are fixed at the four corner positions of the upper wall of the fixing plate, the internal clearance of the limiting sleeves is matched to set a limiting rod, and the upper end of the limiting rod is fixedly connected to the mounting plate.

[0012] Furthermore, a damper is fixed at the middle position of the upper wall of the fixed plate, and the upper end of the damper is fixedly connected to the mounting plate. An elastic member is arranged outside the damper, and the upper and lower ends of the elastic member are respectively abutted against the corresponding mounting plate and the fixed plate.

[0013] Furthermore, a cushion block is fixed to the lower wall of the lower plastic sealing strip, and the cushion block is fixedly connected to the fixing plate, and the horizontal plane of the upper wall of the lower plastic sealing strip is lower than the horizontal plane of the upper wall of the fixing plate.

[0014] Furthermore, a movable plate is fixed to the outside of the upper plastic sealing strip, and the movable plate is fixedly connected to the electric push rod, and the cross section of the movable plate is L-shaped.

[0015] Furthermore, a moving block is fixed near one end of the leveling rod, and the moving block is threadedly connected to the screw. One end of the screw is fixedly connected to the power output shaft of the motor. A side plate is fixed to the side wall of the motor, and the side plate is fixedly connected to the mounting plate.

[0016] Furthermore, a dustproof net is fixed on the upper wall of the fan, a connecting pipe is arranged directly below the fan, and the upper and lower ends of the connecting pipe are respectively fixedly connected to the corresponding mounting frame and the air outlet box.

[0017] Furthermore, the air outlet box is arranged in a trapezoidal shape, and vertical plates are fixed to both ends of the lower wall of the air outlet box, and the lower ends of the vertical plates are fixedly connected to the mounting plate.

[0018] Furthermore, vertical rods are fixed on both sides of the upper wall of the pressure plate, and the upper ends of the vertical rods pass through the movable plate and extend to the top of the movable plate. The vertical rods are gap-matched with the movable plate, and a baffle is fixed on the upper ends of the vertical rods.

[0019] The utility model has the following beneficial effects:

[0020] 1. The utility model provides a leveling rod, operates the packaging bag so that the end of the packaging bag to be leveled is located outside the two leveling rods, and operates the motor to drive the leveling rods to move to both sides to straighten the leveling end of the packaging bag. This method of leveling can avoid the situation where wrinkles may appear on the overlapping part of the packaging bag, making the leveled part of the packaging bag flatter, and solves the problem that wrinkles may appear on the overlapping part of the packaging bag after leveling in the prior art, resulting in poor stability of the plastic sealing part of the packaging bag.

[0021] 2. The utility model provides a fan and an air outlet box. After the upper plastic sealing strip and the lower plastic sealing strip are out of contact with the packaging bag, the fan generates an airflow, which acts on the plastic-sealed part of the packaging bag. The airflow can be used to drive the heat of the plastic-sealed part of the packaging bag, so that the plastic-sealed part of the packaging bag can be quickly cooled down, which is more convenient to use. This solves the problem in the prior art that after the upper plastic sealing strip and the lower plastic sealing strip are out of contact with the packaging bag, the plastic-sealed part is still in a high temperature state and cannot be quickly solidified, causing inconvenience in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments are briefly introduced below.

[0023] Figure 1 This is an overall structural diagram of a plastic sealing mechanism for packaging bag production;

[0024] Figure 2 It is a vertical cross-sectional structural diagram of a plastic sealing mechanism for producing packaging bags;

[0025] Figure 3 This is a left-side structural diagram of a plastic sealing mechanism for producing packaging bags;

[0026] Figure 4 This is a right view structural diagram of a plastic sealing mechanism used in the production of packaging bags.

[0027] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0028] 1. Mounting frame; 101. Fan; 1011. Dust screen; 102. Connecting pipe; 103. Electric push rod; 2. Air outlet box; 201. Vertical plate; 202. Air outlet slot; 3. Motor; 301. Screw; 4. Moving plate; 401. Upper plastic seal strip; 402. Vertical rod; 4021. Baffle; 4022. Pressing plate; 5. Leveling rod; 501. Moving block; 6. Mounting plate; 601. Limit rod; 602. Side plate; 7. Fixed plate; 701. Limit sleeve; 702. Cushion block; 7021. Lower plastic seal strip; 703. Damper; 704. Elastic part. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0030] See also Figures 1 to 3 As shown, the utility model is a plastic sealing mechanism for packaging bag production, including a mounting plate 6, a screw 301 is arranged above the mounting plate 6, and the threads on both sides of the screw 301 are in opposite directions, so that the screw 301 drives two moving blocks 501 to move away from or approach each other, a motor 3 is arranged at one end of the screw 301 for driving the screw 301 to rotate, a leveling rod 5 is symmetrically arranged on one side of the screw 301 for leveling the packaging bag, and a leveling rod 5 is arranged on the lower side of the mounting plate 6 on the side away from the screw 301 A lower plastic sealing strip 7021, an upper plastic sealing strip 401 is arranged above the lower plastic sealing strip 7021, the upper plastic sealing strip 401 and the lower plastic sealing strip 7021 are used to generate heat to achieve the plastic sealing effect on the packaging bag, an electric push rod 103 for pushing the upper plastic sealing strip 401 is arranged above the upper plastic sealing strip 401, and is used to drive the moving plate 4 to move, a mounting frame 1 is fixed to the upper end of the electric push rod 103, a fixing plate 7 is arranged below the mounting plate 6, the fixing plate 7 can be fixed on the mounting platform, and the lower end of the mounting frame 1 is fixedly connected to the fixing plate 7;

[0031] When the above arrangement is used, the packaging bag is sleeved on the outside of the two leveling rods 5 by operating the packaging bag so that the rear end of the packaging bag abuts against the moving block 501. At this time, the motor 3 is controlled to work to drive the screw 301 to rotate, so that the moving block 501 and the leveling rod 5 are moved away from each other until the rear end of the packaging bag is straightened. At this time, the electric push rod 103 is controlled to extend to drive the upper plastic sealing strip 401 to move downward. When the moving plate 4 moves downward until it contacts the mounting plate 6, it continues to move downward. During this period, the mounting plate 6 moves downward synchronously until both the upper plastic sealing strip 401 and the lower plastic sealing strip 7021 contact the packaging bag to perform plastic sealing.

[0032] The four corners of the upper wall of the fixing plate 7 are all fixed with a limiting sleeve 701, the internal clearance of the limiting sleeve 701 is matched with a limiting rod 601, and the upper end of the limiting rod 601 is fixedly connected to the mounting plate 6. With the above arrangement, the limiting rod 601 cooperates with the limiting sleeve 701 so that the mounting plate 6 can only move vertically up and down;

[0033] A damper 703 is fixed at the middle position of the upper wall of the fixing plate 7, and the upper end of the damper 703 is fixedly connected to the mounting plate 6. An elastic member 704 is arranged outside the damper 703, and the upper and lower ends of the elastic member 704 are respectively in contact with the corresponding mounting plate 6 and the fixing plate 7. With the above arrangement, the mounting plate 6 can move up and down correspondingly through the elastic member 704. When the packaging bag is placed outside the two leveling rods 5, the horizontal plane of the upper wall of the mounting plate 6 is higher than the lower plastic sealing strip 7021. The horizontal plane of the upper wall is to prevent the packaging bag from contacting the lower plastic sealing strip 7021 at this time, and the setting of the damper 703 prevents the mounting plate 6 from shaking up and down under the action of the elastic member 704; a cushion block 702 is fixed on the lower wall of the lower plastic sealing strip 7021 to provide a mounting platform for the lower plastic sealing strip 7021, so that the lower plastic sealing strip 7021 is located at a suitable height, the cushion block 702 is fixedly connected to the fixing plate 7, and the horizontal plane of the upper wall of the lower plastic sealing strip 7021 is lower than the horizontal plane of the upper wall of the fixing plate 7;

[0034] The outer part of the upper plastic sealing strip 401 is fixed with a movable plate 4, the lower wall of the upper plastic sealing strip 401 and the lower wall of the movable plate 4 at the corresponding position are located in the same horizontal plane, and the movable plate 4 is fixedly connected to the electric push rod 103, and the cross section of the movable plate 4 is L-shaped;

[0035] A moving block 501 is fixed to one end of the leveling rod 5 near the screw 301, and the moving block 501 is threadedly connected to the screw 301. One end of the screw 301 is fixedly connected to the power output shaft of the motor 3. A side plate 602 is fixed to the side wall of the motor 3, and the side plate 602 is fixedly connected to the mounting plate 6. The above arrangement can make the moving block 501 move inward or outward synchronously when the motor 3 is working.

[0036] See also Figure 1 , 2 As shown in 4, a fan 101 is fixed to the upper wall of the mounting frame 1, an air outlet box 2 is arranged on one side of the mounting frame 1, an air outlet slot 202 is opened on the side wall of the air outlet box 2, a pressing plate 4022 is arranged on the side of the upper plastic sealing strip 401 away from the air outlet box 2, and the air outlet box 2 and the pressing plate 4022 are both located above the mounting plate 6;

[0037] When the above arrangement is used, after the upper plastic sealing strip 401 and the lower plastic sealing strip 7021 are separated from the packaging bag, the horizontal plane of the lower wall of the upper plastic sealing strip 401 is slightly higher than the horizontal plane of the upper wall of the mounting plate 6, and the pressing plate 4022 is in a state of pressing the packaging bag. In this state, the fan 101 is operated to generate airflow into the air outlet box 2, and the airflow then passes through the air outlet slot 202 to act on the plastic sealing part of the packaging bag for rapid cooling;

[0038] A dustproof net 1011 is fixed on the upper wall of the fan 101 to filter dust from the airflow entering the connecting pipe 102. A connecting pipe 102 is provided directly below the fan 101. The upper and lower ends of the connecting pipe 102 are respectively fixedly connected to the corresponding mounting frame 1 and the air outlet box 2. The connecting pipe 102 is provided as a hose. When the fan 101 is working, the external airflow passes through the connecting pipe 102 and enters the air outlet box 2. The air outlet box 2 is arranged in a trapezoidal shape, so that the airflow passes through the air outlet slot 202 and acts on the plastic sealing of the packaging bag. Vertical plates 201 are fixed at both ends of the lower wall of the air outlet box 2, and the lower ends of the vertical plates 201 are fixedly connected to the mounting plate 6.

[0039] Vertical rods 402 are fixed on both sides of the upper wall of the pressure plate 4022, and the upper ends of the vertical rods 402 pass through the movable plate 4 and extend to the top of the movable plate 4. The vertical rods 402 and the movable plate 4 are clearance-matched, and a baffle 4021 is fixed on the upper ends of the vertical rods 402. With the above arrangement, when the upper plastic sealing strip 401 is separated from the plastic sealing part of the packaging bag, the pressure plate 4022 still acts on the plastic sealing part of the packaging bag to press the packaging bag tightly, thereby preventing the packaging bag from being blown away when the plastic sealing part of the packaging bag is cooled.

[0040] The electrical appliances in the plastic sealing mechanism for producing packaging bags are all electrically connected to an external power source through conductive wires. Meanwhile, the electrical appliances in the plastic sealing mechanism for producing packaging bags are all existing technologies, and their models are not limited here.

[0041] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the aforementioned embodiments and any equivalent replacement of some of the technical features therein, any modification, equivalent replacement, and improvement made are all within the protection scope of the present invention.

Claims

1. A plastic sealing mechanism for packaging bag production, comprising a mounting plate (6), characterized in that: A screw rod (301) is arranged above the mounting plate (6), and the screw threads on both sides of the screw rod (301) are in opposite directions. A motor (3) is arranged at one end of the screw rod (301). A leveling rod (5) is symmetrically arranged on one side of the screw rod (301). A lower plastic sealing strip (7021) is arranged on the lower side of the mounting plate (6) corresponding to the inside of the leveling rod (5) on the side away from the screw rod (301). An upper plastic sealing strip (401) is arranged above the lower plastic sealing strip (7021). An electric push rod (103) for pushing the upper plastic sealing strip (401) is arranged above the upper plastic sealing strip (401). A mounting frame (1) is fixed to the upper end of the electric push rod (103). A fixing plate (7) is arranged below the mounting plate (6), and the lower end of the mounting frame (1) is fixedly connected to the fixing plate (7). A fan (101) is fixed to the upper wall of the mounting frame (1); an air outlet box (2) is arranged on one side of the mounting frame (1); an air outlet groove (202) is provided on the side wall of the air outlet box (2); a pressure plate (4022) is arranged on the side of the upper plastic sealing strip (401) away from the air outlet box (2); and the air outlet box (2) and the pressure plate (4022) are both located above the mounting plate (6).

2. A plastic sealing mechanism for packaging bag production according to claim 1, characterized in that: A limiting sleeve (701) is fixed at each of the four corner positions of the upper wall of the fixing plate (7), a limiting rod (601) is provided in cooperation with the internal clearance of the limiting sleeve (701), and the upper end of the limiting rod (601) is fixedly connected to the mounting plate (6).

3. A plastic sealing mechanism for packaging bag production according to claim 2, characterized in that: A damper (703) is fixed at the middle position of the upper wall of the fixing plate (7), and the upper end of the damper (703) is fixedly connected to the mounting plate (6). An elastic member (704) is arranged outside the damper (703), and the upper and lower ends of the elastic member (704) are respectively in contact with the corresponding mounting plate (6) and the fixing plate (7).

4. The plastic sealing mechanism for packaging bag production according to claim 2, characterized in that: A cushion block (702) is fixed to the lower wall of the lower plastic sealing strip (7021), and the cushion block (702) is fixedly connected to the fixing plate (7), and the horizontal plane of the upper wall of the lower plastic sealing strip (7021) is lower than the horizontal plane of the upper wall of the fixing plate (7).

5. The plastic sealing mechanism for packaging bag production according to claim 1, characterized in that: A movable plate (4) is fixed to the outside of the upper plastic sealing strip (401), and the movable plate (4) is fixedly connected to the electric push rod (103), and the cross section of the movable plate (4) is L-shaped.

6. The plastic sealing mechanism for packaging bag production according to claim 1, characterized in that: A moving block (501) is fixed to one end of the leveling rod (5) close to the screw rod (301), and the moving block (501) is threadedly connected to the screw rod (301). One end of the screw rod (301) is fixedly connected to the power output shaft of the motor (3). A side plate (602) is fixed to the side wall of the motor (3), and the side plate (602) is fixedly connected to the mounting plate (6).

7. The plastic sealing mechanism for packaging bag production according to claim 1, characterized in that: A dustproof net (1011) is fixed to the upper wall of the fan (101), a connecting pipe (102) is provided directly below the fan (101), and the upper and lower ends of the connecting pipe (102) are respectively fixedly connected to the corresponding mounting frame (1) and the air outlet box (2).

8. The plastic sealing mechanism for packaging bag production according to claim 7, characterized in that: The air outlet box (2) is arranged in a trapezoidal shape, and vertical plates (201) are fixed to both ends of the lower wall of the air outlet box (2), and the lower ends of the vertical plates (201) are fixedly connected to the mounting plate (6).

9. The plastic sealing mechanism for packaging bag production according to claim 5, characterized in that: Vertical rods (402) are fixed on both sides of the upper wall of the pressure plate (4022); the upper ends of the vertical rods (402) pass through the movable plate (4) and extend above the movable plate (4); the vertical rods (402) are loosely matched with the movable plate (4); and a baffle (4021) is fixed on the upper ends of the vertical rods (402).

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