Heat sealing structure of three-edge sealing packaging bag making machine

Abstract

The utility model relates to the technical field of heat sealing, in particular to a heat sealing structure of a three-edge sealing packaging bag making machine, which comprises a base, a hydraulic rod is fixedly connected to the top end of the base close to the edge, a positioning block is arranged on the outer side of the hydraulic rod, a lower pressing plate is fixedly connected to the outer side of the positioning block, and an air pump is fixedly connected to the top end of the lower pressing plate. An air outlet of the air pump is fixedly connected with an air pipe, the end, away from the air pump, of the air pipe is fixedly connected with a connector, a threaded hole is formed in the top end of the lower pressing plate, an inner groove is formed in the lower pressing plate, and the bottom of the inner groove is connected with an air nozzle in a clamped mode. After a packaging bag is placed at a designated position, when the hydraulic rod drives the lower pressing plate to move downwards, the supporting rods conduct smoothing operation on all the edges of the packaging bag, and the situation that sealing fails or a sealing opening is prone to cracking after the edge of the packaging bag is subjected to heat sealing through the heat sealing structure is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of heat sealing, in particular to a heat sealing structure of a three-side seal packaging bag making machine. Background Technique

[0002] Heat sealing bag making is widely used in the fields of daily chemical product packaging, food and drug packaging, etc. Since the heat-sealed part of the packaging bag is most likely to leak during product filling, and most of the damage to the packaging bag also occurs in the heat-sealed part during actual use, selecting appropriate heat-sealing materials and heat-sealing parameters can reduce the waste rate of the production line and effectively improve the overall barrier performance of the package. Heat pressing and sealing is to heat the material at the sealing part in a certain way to make it reach the viscous flow state and then apply pressure to make it stick and seal. Generally, it is completed by a heat pressing and sealing device or a heat pressing and sealing machine. The heat head is the actuator of heat pressing and sealing. The three-side seal packaging bag making machine is a structure for heat sealing packaging bags, used to heat seal packaging bags for some food and other purposes.

[0003] When the heat sealing structure heat seals the packaging bag, the sealing part of the packaging bag is not in a flat state, and heat sealing failure or the sealed part is prone to cracking after heat sealing will occur. Secondly, when heat sealing the three edges of the packaging bag, generally one edge is heat sealed at a time, and the efficiency is slow. Finally, after heat sealing, the temperature of the sealing part of the packaging bag is relatively high, and after the sealing is completed, the sealing part will adhere to the heat sealing structure. Therefore, a heat sealing structure of a three-side seal packaging bag making machine is proposed for the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide a heat sealing structure of a three-side seal packaging bag making machine to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A heat sealing structure of a three-side seal packaging bag making machine, including a base, a hydraulic rod is fixedly connected to the base near the edge at the top, a positioning block is arranged outside the hydraulic rod, a lower pressing plate is fixedly connected to the outside of the positioning block, an air pump is fixedly connected to the top of the lower pressing plate, an air pipe is fixedly connected to the air outlet of the air pump, a connecting head is fixedly connected to the end of the air pipe far away from the air pump, a threaded hole is arranged at the top of the lower pressing plate, an inner groove is arranged inside the lower pressing plate, an air nozzle is snap-fitted to the bottom of the inner groove, a heat pressing plate is fixedly connected to the bottom of the lower pressing plate, a groove is arranged at the bottom of the lower pressing plate, a support rod is rotatably connected to the inside of the groove, a round hole plate is fixedly connected to the outside of the support rod, a support column is rotatably connected to the inside of the round hole plate, a spring is arranged outside the support column, and a hole plate is fixedly connected to the bottom of the lower pressing plate near the edge.

[0007] Preferably, the lower pressing plate is C-shaped, and the hot pressing plate is also C-shaped. The number of hot pressing plates is two, and the other hot pressing plate is fixed to the top end of the base.

[0008] Preferably, the number of the air nozzles is several, which are located on one side of the hot pressing plate, and the height of the air nozzles is less than that of the hot pressing plate.

[0009] Preferably, the connecting head is in threaded connection with the threaded hole, and the threaded hole communicates with the inner groove.

[0010] Preferably, the strut passes through the hole plate, and the spring is located outside the strut between the hole plate and the round hole plate.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. In the present utility model, through the arranged grooves, struts, round hole plates, support rods, springs and hole plates, after the packaging bag is placed at the designated position, when the hydraulic rod drives the lower pressing plate to move downward, the support rods can flatten each side of the packaging bag, preventing the sealing failure or easy cracking of the edge of the packaging bag after heat sealing by the heat sealing structure;

[0013] 2. In the present utility model, through the arranged positioning blocks, lower pressing plate, hot pressing plate and base, three edges of the packaging bag can be heat sealed, reducing the heat sealing time of the packaging bag and improving the work efficiency;

[0014] 3. In the present utility model, through the arranged air pump, air pipe, connecting head, inner groove and air nozzles, the edge of the heat-sealed packaging bag can be cooled by air, preventing the temperature of the edge of the heat-sealed packaging bag from being too high and sticking to the hot pressing plate for heat sealing, resulting in damage to the seal of the packaging bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 is a semi-sectional schematic diagram of the structure of the lower pressing plate of the present utility model;

[0017] Figure 3 is an installation schematic diagram of the structure of the lower pressing plate of the present utility model;

[0018] Figure 4 is an installation schematic diagram of the structure of the strut of the present utility model;

[0019] Figure 5 is the present utility model Figure 4 schematic diagram of the structure at position A.

[0020] In the figure: 1. Base; 2. Hydraulic rod; 3. Positioning block; 4. Lower pressing plate; 5. Air pump; 6. Air pipe; 7. Connector; 8. Threaded hole; 9. Inner groove; 10. Air nozzle; 11. Hot pressing plate; 12. Groove; 13. Support rod; 14. Round hole plate; 15. Support pillar; 16. Spring; 17. Hole plate. Specific implementation manner

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] It should be noted that the terms used here are only for describing specific implementation manners, and are not intended to limit the exemplary implementation manners according to the present application. As used here, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "comprise" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0023] In addition, it should be noted that using words such as "first" and "second" to limit components is only for facilitating the distinction of corresponding components. Without further statement, the above words have no special meanings, so they cannot be understood as limiting the protection scope of the present invention.

[0024] Please refer to Figures 1-5 , the present invention provides a technical solution:

[0025] A heat-sealing structure for a three-side sealed packaging bag-making machine, including a base 1, a hydraulic rod 2 is fixedly connected to the top of the base 1 near the edge, a positioning block 3 is arranged outside the hydraulic rod 2, a lower pressing plate 4 is fixedly connected to the outside of the positioning block 3, an air pump 5 is fixedly connected to the top of the lower pressing plate 4, an air pipe 6 is fixedly connected to the air outlet of the air pump 5, a connector 7 is fixedly connected to the end of the air pipe 6 away from the air pump 5, a threaded hole 8 is arranged on the top of the lower pressing plate 4, an inner groove 9 is arranged inside the lower pressing plate 4, an air nozzle 10 is snap-fitted to the bottom of the inner groove 9, a hot pressing plate 11 is fixedly connected to the bottom of the lower pressing plate 4, a groove 12 is arranged at the bottom of the lower pressing plate 4, a support rod 13 is rotatably connected to the inside of the groove 12, a round hole plate 14 is fixedly connected to the outside of the support rod 13, a support pillar 15 is rotatably connected to the inside of the round hole plate 14, a spring 16 is arranged outside the support pillar 15, and a hole plate 17 is fixedly connected to the bottom of the lower pressing plate 4 near the edge.

[0026] The lower pressing plate 4 is C-shaped, and the hot pressing plate 11 is also C-shaped. There are two hot pressing plates 11, and the other hot pressing plate 11 is fixed to the top of the base 1; the number of air nozzles 10 is several, located on one side of the hot pressing plate 11, and the height of the air nozzle 10 is less than the height of the hot pressing plate 11; the connector 7 and the threaded hole 8 are threadedly connected, and the threaded hole 8 communicates with the inner groove 9; the support column 15 passes through the hole plate 17, and the spring 16 is outside the support column 15 between the hole plate 17 and the round hole plate 14.

[0027] Working process: This device is a heat-sealing structure for three-side heat-sealing of packaging bags. Two hydraulic rods 2 are fixedly connected to the top of the base 1. A positioning block 3 is provided on the outside of the hydraulic rod 2. A lower pressing plate 4 is fixedly connected to the outside of the positioning block 3. An air pump 5 is fixedly connected to the top of the lower pressing plate 4. An air pipe 6 is provided at the air outlet of the air pump 5. The other end of the air pipe 6 is provided with a connector 7. An inner groove 9 is provided inside the lower pressing plate 4. A threaded hole 8 is provided at the top of the lower pressing plate 4. The threaded hole 8 communicates with the inner groove 9. The connector 7 and the threaded hole 8 are threadedly connected. A plurality of air nozzles 10 are installed at the bottom end of the inner groove 9. The air nozzles 10 are arranged at equal intervals. The bottom end of the lower pressing plate 4 is fixedly connected to a hot pressing plate 11. The air nozzle 10 is located on one side of the hot pressing plate 11, and the height of the air nozzle 10 is less than the height of the hot pressing plate 11. The other hot pressing plate 11 is fixed to the top of the base 1. A groove 12 is provided at the bottom end of the lower pressing plate 4. A support rod 13 is rotatably connected in the groove 12. A round hole plate 14 is fixedly connected to the outside of the support rod 13. A support column 15 is rotatably connected in the round hole of the round hole plate 14. A hole plate 17 is fixedly connected to the bottom end of the lower pressing plate 4 near the edge. The support column 15 passes through the hole plate 17. The spring 16 is provided outside the support column 15 between the hole plate 17 and the round hole plate 14. When heat-sealing the packaging bag is required, the external power supply supplies power to the air pump 5 and the hot pressing plate 11. The packaging bag to be heat-sealed is placed at the designated position on the base 1. The hydraulic rod 2 controls the downward movement of the lower pressing plate 4. When the support rod 13 touches the packaging bag, during the downward movement of the lower pressing plate 4, the support rod 13 rotates in the groove 12, and the bottom end of the support rod 13 flattens the edge of the packaging bag. When the support rod 13 rotates, the spring 16 will be compressed. Under the elastic force of the spring 16, the pressure of the support rod 13 on the edge of the packaging bag will be maintained, and the edge of the packaging bag can be better flattened. After the hot pressing plate 11 at the bottom end of the lower pressing plate 4 and the hot pressing plate 11 at the top of the base 1 clamp the packaging bag, the hot pressing plate 11 heats and heat-seals the packaging bag. After heat-sealing for a period of time, the air pump 5 works, and compressed air enters the inner groove 9 through the air pipe 6 and the connector 7, and then is discharged from the air nozzle 10. The discharged gas will cool the edge of the heat-sealed packaging bag by air cooling, preventing the edge of the heat-sealed packaging bag from sticking to the hot pressing plate 11, etc. The edge of the cooled packaging bag will not adhere to the heat-sealing device, and high-efficiency and high-quality heat-sealing of the packaging bag can be maintained.

[0028] The content not detailedly described in this specification belongs to the prior art well-known to those skilled in the art. The standard parts used in the present utility model can all be purchased from the market. The special-shaped parts can all be customized according to the descriptions in the specification and the attached drawings. The specific connection manners of each part all adopt the conventional means such as bolts, rivets, welding, etc. that are mature in the prior art. The machines, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection manner in the prior art, which will not be elaborated herein.

[0029] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A heat sealing structure for a three-side sealing packaging bag making machine, comprising a base (1), characterized in that: A hydraulic rod (2) is fixedly connected to the top of the base (1) near the edge, a positioning block (3) is provided on the outside of the hydraulic rod (2), a lower pressure plate (4) is fixedly connected to the outside of the positioning block (3), an air pump (5) is fixedly connected to the top of the lower pressure plate (4), an air pipe (6) is fixedly connected to the air outlet of the air pump (5), a connector (7) is fixedly connected to the end of the air pipe (6) away from the air pump (5), a threaded hole (8) is provided on the top of the lower pressure plate (4), an inner groove (9) is provided inside the lower pressure plate (4), and the lower pressure plate (4) is provided with a plurality of screw holes (8) and a plurality of screw holes (9) are provided on the top of the lower pressure plate (4). The bottom of the inner groove (9) is snap-connected with an air nozzle (10), the bottom end of the lower pressure plate (4) is fixedly connected with a hot pressing plate (11), the bottom end of the lower pressure plate (4) is provided with a groove (12), the inside of the groove (12) is rotatably connected with a support rod (13), the outside of the support rod (13) is fixedly connected with a circular hole plate (14), the inside of the circular hole plate (14) is rotatably connected with a pillar (15), the outside of the pillar (15) is provided with a spring (16), and the bottom end of the lower pressure plate (4) is fixedly connected with a hole plate (17) near the edge.

2. The heat sealing structure of a three-side sealing packaging bag making machine according to claim 1, characterized in that: The lower pressing plate (4) is C-shaped, and the hot pressing plate (11) is also C-shaped. There are two hot pressing plates (11), and the other hot pressing plate (11) is fixed to the top of the base (1).

3. The heat sealing structure of a three-side sealing packaging bag making machine according to claim 1, characterized in that: The number of the air nozzles (10) is several and they are located on one side of the hot pressing plate (11), and the height of the air nozzles (10) is smaller than the height of the hot pressing plate (11).

4. The heat sealing structure of a three-side sealing packaging bag making machine according to claim 1, characterized in that: The connecting head (7) and the threaded hole (8) are threadedly connected, and the threaded hole (8) and the inner groove (9) are communicated.

5. The heat sealing structure of a three-side sealing packaging bag making machine according to claim 1, characterized in that: The support column (15) passes through the perforated plate (17), and the spring (16) is located outside the support column (15) and between the perforated plate (17) and the circular hole plate (14).

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