Plastic bag heat sealing machine

Abstract

The utility model discloses a plastic bag heat sealing machine, and belongs to the technical field of heat sealing machines. Comprising a machine frame platform, a discharging roller, a heat sealing mechanism and a material collecting roller, the discharging roller, the heat sealing mechanism and the material collecting roller are arranged on the machine frame platform and are sequentially arranged from one side to the other side of the machine frame platform, and in the using process, a plastic bag which is not subjected to heat sealing is wound on the discharging roller, penetrates through the heat sealing mechanism and is wound on the material collecting roller after being subjected to heat sealing; the device further comprises purification mechanisms, the purification mechanisms are arranged on the feeding side and the discharging side of the heat sealing mechanism respectively, smoke generated in the heat sealing process is pumped away through the purification mechanisms, the heat sealing mechanism comprises a heat source roller and a rolling roller, the rolling roller is arranged over the heat source roller in a sliding mode, and a plastic bag which is not subjected to heat sealing penetrates through the space between the heat source roller and the rolling roller. The plastic bag is subjected to heat sealing through the heat source roller and the grinding roller; according to the utility model, the structural strength of the heat-sealing part after the plastic bag is heat-sealed can be ensured, and the pollution to the production environment is reduced.

Description

Technical Field

[0001] This utility model relates to a heat-sealing machine for plastic bags, belonging to the technical field of heat-sealing machines. Background Technology

[0002] In the manufacturing process of plastic bags, the plastic bag rolls are first heat-sealed, and then cut to form individual plastic bags. The heat-sealing of plastic bags is achieved using a heat-sealing machine. A heat-sealing machine uses various external conditions (such as electric heating, high-frequency voltage, and ultrasound) to heat the sealing area of ​​the plastic film, turning it into a viscous state. With the help of certain pressure, the two layers of film are fused together. After cooling, the film maintains a certain strength and sealing performance, ensuring that the goods can withstand certain external forces during packaging, transportation, storage, and consumption, preventing cracking and leakage, and thus protecting the goods.

[0003] In existing technology, a heat-sealing machine includes a frame, on which a discharge roller, a heat-sealing mechanism for heat-sealing plastic bags, and a take-up roller are sequentially arranged. The take-up roller is rotatably connected to the frame, and one end of the take-up roller is equipped with a motor for driving its rotation. Unsealed plastic bags are wound on the discharge roller, pass through the heat-sealing mechanism, and then wound onto the take-up roller. During operation, the motor drives the take-up roller to rotate, thereby conveying the plastic bags. During this conveying process, the heat-sealing mechanism heat-seals the plastic bags.

[0004] The disadvantage of this device is that when the heat-sealing mechanism seals the plastic bag, the heat-sealed part of the plastic bag is melted by the heat-sealing mechanism and turns into a liquid. At this time, the plastic bag is still being transported under the action of the take-up roller. The liquid plastic bag will be subjected to a pulling force towards the take-up roller at the end relative to the take-up roller, which will cause the melted part of the plastic bag to move forward, while the part of the plastic bag facing away from the take-up roller will not move forward. Therefore, the plastic bag is stretched, which makes the heat-sealed part of the plastic bag thinner and reduces the structural strength. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, this utility model provides a plastic bag heat sealing machine.

[0006] The technical solution adopted in this utility model is as follows: a plastic bag heat-sealing machine is designed, including a frame platform, a discharge roller, a heat-sealing mechanism, and a take-up roller. The discharge roller, heat-sealing mechanism, and take-up roller are respectively arranged on the frame platform, and the three are arranged sequentially from one side of the frame platform to the other side. In use, the unsealed plastic bag is rolled on the discharge roller, passes through the heat-sealing mechanism, is heat-sealed, and then rolled on the take-up roller. It also includes a purification mechanism, with purification mechanisms respectively set on the feeding side and the discharge side of the heat-sealing mechanism. The purification mechanisms remove the fumes generated during the heat-sealing process. The heat-sealing mechanism includes a heat source roller and a pressing roller. The pressing roller is slidably arranged directly above the heat source roller. The unsealed plastic bag passes between the heat source roller and the pressing roller, and the plastic bag is heat-sealed by the heat source roller and the pressing roller.

[0007] Furthermore, the purification mechanism includes a manifold and a negative pressure mechanism, with the manifold arranged around the negative pressure mechanism and the manifold fixed to the heat sealing mechanism.

[0008] Furthermore, the negative pressure mechanism adopts a negative pressure fan and is connected to a power source, the manifold is a rectangular thin plate, a flue is provided on the upper side of the negative pressure mechanism, and the flues of the purification mechanisms on the feeding side and the discharging side of the heat sealing mechanism are connected to the same exhaust pipe.

[0009] Furthermore, the heat sealing mechanism also includes a gantry frame, a hydraulic rod, and a guide rod. The gantry frame includes a support beam and support columns on both sides of the support beam. The lower end of the support column is provided with a flange and is installed on the frame platform by bolts. The hydraulic rod and the guide rod are installed on the support beam. The telescopic end of the hydraulic rod passes through the support beam. Guide rods are provided on both sides of the hydraulic rod. The guide rods are slidably connected to the support beam. A rolling roller is provided at the lower end of the hydraulic rod and the guide rod.

[0010] Furthermore, a first mounting base is provided on the rolling roller, the rolling roller is rotatably mounted on the first mounting base, and the lower ends of the hydraulic rod and the guide rod are fixed on the first mounting base.

[0011] Furthermore, a second mounting base is provided on the heat source roller, and the heat source roller is rotatably connected to the second mounting base. A support plate is provided under the second mounting base, and the support plate is fixed on the frame platform. An electric heating wire is provided inside the heat source roller, and the electric heating wire is connected to an external power source.

[0012] Furthermore, this design also includes a material guiding assembly. A set of material guiding assemblies is provided on the feeding side and the discharging side of the heat sealing mechanism. The material guiding assembly includes a rotating material guiding roller. The unsealed plastic bag is rolled on the discharging roller, passes through the material guiding assembly on the feeding side of the heat sealing mechanism, the heat sealing mechanism, and the material guiding assembly on the discharging side of the heat sealing mechanism in sequence, and is then rolled on the take-up roller.

[0013] Furthermore, the material guiding assembly also includes a support base, an adjusting screw, and a slider. The support base is respectively installed on the frame platform at both ends of the material guiding roller. The support base includes a partition plate and two first guide plates and two second guide plates respectively installed on the upper and lower sides of the partition plate. A slide rail is formed between the two first guide plates. The slider is installed in the slide rail. An adjusting screw is rotatably installed at the lower end of the slider. The adjusting screw passes through the partition plate and is threadedly connected to it. Both ends of the material guiding roller are respectively installed on the corresponding slider and are rotatably connected to it.

[0014] Furthermore, a fixing plate is provided at the lower end of the two second guide plates, and the two ends of the fixing plate are respectively fixed to the frame platform by bolts. A limit plate is also provided on the outer side of the two first guide plates.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention, through the setting of a purification mechanism, allows toxic and harmful gases generated during the heat sealing process to be discharged, reducing pollution to the production environment and promoting green production. At the same time, through the setting of the rolling roller and the heat source roller, the plastic bag can continue to move forward during the heat sealing process, reducing excessive stretching at the heat sealing point that would reduce structural strength and improve the quality of the plastic bag. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the isometric view of this utility model.

[0019] Figure 2 This is a side view schematic diagram of the present invention.

[0020] Figure 3 This is an isometric view of the material guiding assembly of this utility model.

[0021] In the diagram: 1. Frame platform; 2. Discharge roller; 3. Heat sealing mechanism; 4. Receiving roller; 5. Heat source roller; 6. Compactor roller; 7. Manifold; 8. Negative pressure mechanism; 9. Flue; 10. Hydraulic rod; 11. Guide rod; 12. Support beam; 13. Support column; 14. Flange; 15. First mounting seat; 16. Second mounting seat; 17. Support plate; 18. Material guiding assembly; 19. Material guiding roller; 20. Support seat; 21. Adjusting screw; 22. Slider; 23. Partition plate; 24. First guide plate; 25. Second guide plate; 26. Fixing plate; 27. Limiting plate. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Example 1

[0025] like Figure 1-3As shown: A plastic bag heat-sealing machine includes a frame platform 1, a discharge roller 2, a heat-sealing mechanism 3, and a take-up roller 4. The discharge roller 2, heat-sealing mechanism 3, and take-up roller 4 are respectively mounted on the frame platform 1, and arranged sequentially from one side of the frame platform 1 to the other. In use, the plastic bag is fed through the discharge roller 2, the plastic bag is wound up through the take-up roller 4, and the plastic bag is heat-sealed through the heat-sealing mechanism 3. Specifically, the unsealed plastic bag is wound on the discharge roller 2, passes through the heat-sealing mechanism 3 and is heat-sealed, and then wound on the take-up roller 4. The heat-sealing mechanism 3 described in this embodiment also includes a purification mechanism. Purification mechanisms (similar to a range hood) are respectively installed on the inlet and outlet sides of the heat-sealing mechanism 3. These purification mechanisms remove the fumes generated during the heat-sealing process, reducing fumes pollution to the production environment, protecting the health of operators, and maintaining the cleanliness of the production environment. The heat-sealing mechanism 3 includes a heat source roller 5 and a pressing roller 6. The pressing roller 6 is slidably positioned directly above the heat source roller 5. The heat source roller 5 provides the heat source for heat sealing. The unsealed plastic bag passes between the heat source roller 5 and the pressing roller 6, and is heat-sealed by the heat source roller 5 and the pressing roller 6. Specifically, during heat sealing, the pressing roller 6 slides downwards onto the heat source roller 5, and the two quickly contact and separate. At this point, the plastic bag is heat-sealed. Simultaneously, because the heat source roller 5 and the pressing roller 6 are a rolling mechanism, the plastic bag continues to discharge while being heat-sealed, reducing excessive stretching deformation at the heat-sealing point and ensuring the strength of the plastic bag after heat sealing.

[0026] Example 2

[0027] This embodiment, based on Embodiment 1, provides a specific purification mechanism structure, specifically as follows:

[0028] The purification mechanism includes a manifold 7 and a negative pressure mechanism 8. The manifold 7 is arranged around the negative pressure mechanism 8 to ensure that the polluted flue gas generated by heat sealing is fully absorbed. The manifold 7 is fixed on the heat sealing mechanism 3, thereby fixing the entire purification mechanism.

[0029] More specifically, in this embodiment, the negative pressure mechanism 8 adopts a negative pressure fan (a conventional fan is sufficient) and is connected to a power source. The manifold 7 is a rectangular thin plate (easy to source and manufacture). A flue 9 is provided on the upper side of the negative pressure mechanism 8. The flues 9 of the purification mechanisms on the feeding side and the discharging side of the heat sealing mechanism 3 are connected to the same exhaust pipe (not shown in the attached figure), which saves materials and exhausts the flue gas to the outside.

[0030] Example 3

[0031] This embodiment, based on embodiment 2, provides a specific heat-sealing mechanism 3 structure, specifically as follows:

[0032] The heat sealing mechanism 3 also includes a gantry frame, a hydraulic rod 10, and a guide rod 11. The gantry frame includes a support beam 12 and support columns 13 on both sides of the support beam 12, providing support. A flange 14 is provided at the lower end of the support column 13 and is bolted to the frame platform 1. The support column 13 is inserted into the sleeve in the middle of the flange 14. The hydraulic rod 10 (i.e., the hydraulic telescopic mechanism) and the guide rod 11 are installed on the support beam 12. The telescopic end of the hydraulic rod 10 passes through the support beam 12. Guide rods 11 are provided on both sides of the hydraulic rod 10 and are slidably connected to the support beam 12. A rolling roller 6 is provided at the lower end of the hydraulic rod 10 and the guide rod 11. The hydraulic rod 10 drives the rolling roller 6 to slide up and down, while the guide rod 11 provides a guiding and limiting function, making the up and down sliding process of the rolling roller 6 more stable.

[0033] More specifically, in this embodiment, the rolling roller 6 is provided with a first mounting base 15, the rolling roller 6 is rotatably mounted on the first mounting base 15, and the lower ends of the hydraulic rod 10 and the guide rod 11 are fixed on the first mounting base 15, which facilitates the installation of the rolling roller 6.

[0034] Example 4

[0035] This embodiment, based on embodiment 3, provides a specific structural arrangement for the heat source roller 5, specifically as follows:

[0036] A second mounting base 16 is provided on the heat source roller 5, and the heat source roller 5 is rotatably connected to the second mounting base 16. A support plate 17 is provided under the second mounting base 16, and the support plate 17 is fixed on the frame platform 1. The structure is simple. An electric heating wire (not shown in the figure, conventional existing technology can be used) is provided inside the heat source roller 5. The electric heating wire is connected to an external power source and provides heat to the heat source roller 5 to seal the plastic bag. It can be understood that the electric heating wire does not need to rotate with the heat source roller 5.

[0037] Example 5

[0038] This embodiment is a further optimization and refinement of the plastic bag heat sealing machine based on Embodiment 4, specifically as follows:

[0039] The plastic bag heat-sealing machine described in this embodiment further includes a material guiding assembly 18. A set of material guiding assemblies 18 is respectively provided on the infeed side and the outlet side of the heat-sealing mechanism 3. Each material guiding assembly 18 includes a rotatably mounted guide roller 19. The unsealed plastic bag is wound onto the outlet roller 2, passes sequentially through the material guiding assembly 18 on the infeed side of the heat-sealing mechanism 3, the heat-sealing mechanism 3, and the material guiding assembly 18 on the outlet side of the heat-sealing mechanism 3, and then wound onto the take-up roller 4. The material guiding assembly 18 makes the conveying of the plastic bag more reliable and improves the heat-sealing effect.

[0040] Example 6

[0041] This embodiment is a further optimization and refinement of the material guiding component 18 based on embodiment 5, specifically as follows:

[0042] The material guiding assembly 18 further includes a support base 20, an adjusting screw 21, and a slider 22. The support base 20 is respectively installed on the frame platform 1 at both ends of the material guiding roller 19. The support base 20 includes a partition 23 and two first guide plates 24 and two second guide plates 25 respectively installed on the upper and lower sides of the partition 23. A slide is formed between the two first guide plates 24. The slider 22 is installed in the slide. The adjusting screw 21 is rotatably installed at the lower end of the slider 22. The adjusting screw 21 passes through the partition 23 and is threadedly connected to it. The position of the slider 22 is adjusted by adjusting the adjusting screw 21, thereby adjusting the height of the material guiding roller 19 to suit different material guiding needs. The two ends of the material guiding roller 19 are respectively installed on the corresponding slider 22 and are rotatably connected to it.

[0043] In this embodiment, a fixing plate 26 is provided at the lower end of the two second guide plates 25. The two ends of the fixing plate 26 are respectively fixed to the frame platform 1 by bolts. A limit plate 27 is also provided on the outer side of the two first guide plates 24, making the structure more practical and reliable.

[0044] Furthermore, in the description of this utility model, unless otherwise stated, the terms "multiple," "multiple roots," and "multiple groups" mean two or more, and "several," "several roots," and "several groups" mean one or more. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used only for descriptive purposes and should not be construed as indicating or implying relative importance.

[0045] The specific embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A plastic bag heat-sealing machine, comprising a frame platform, a discharge roller, a heat-sealing mechanism, and a take-up roller, wherein the discharge roller, heat-sealing mechanism, and take-up roller are respectively disposed on the frame platform, and the three are arranged sequentially from one side of the frame platform to the other side. In use, an unsealed plastic bag is rolled onto the discharge roller, passes through the heat-sealing mechanism, is heat-sealed, and then rolled onto the take-up roller; characterized in that: It also includes a purification mechanism. The heat sealing mechanism is equipped with a purification mechanism on the feeding side and the discharging side. The purification mechanism removes the fumes generated during the heat sealing process. The heat sealing mechanism includes a heat source roller and a pressing roller. The pressing roller is slidably arranged directly above the heat source roller. The unsealed plastic bag passes between the heat source roller and the pressing roller and is heat-sealed by the heat source roller and the pressing roller.

2. The plastic bag heat sealing machine according to claim 1, characterized in that: The purification mechanism includes a manifold and a negative pressure mechanism. The manifold is arranged around the negative pressure mechanism and is fixed to the heat sealing mechanism.

3. The plastic bag heat sealing machine according to claim 2, characterized in that: The negative pressure mechanism uses a negative pressure fan and is connected to a power source. The manifold is a rectangular thin plate. A flue is provided on the upper side of the negative pressure mechanism. The flues of the purification mechanisms on the feeding side and the discharging side of the heat sealing mechanism are connected to the same exhaust pipe.

4. The plastic bag heat sealing machine according to claim 1, characterized in that: The heat sealing mechanism also includes a gantry frame, a hydraulic rod, and a guide rod. The gantry frame includes a support beam and support columns on both sides of the support beam. The lower end of the support column is provided with a flange and is bolted to the machine platform. The hydraulic rod and the guide rod are installed on the support beam. The telescopic end of the hydraulic rod passes through the support beam. Guide rods are provided on both sides of the hydraulic rod. The guide rods are slidably connected to the support beam. A rolling roller is provided at the lower end of the hydraulic rod and the guide rod.

5. The plastic bag heat sealing machine according to claim 4, characterized in that: The rolling roller is provided with a first mounting base, and the rolling roller is rotatably mounted on the first mounting base. The lower ends of the hydraulic rod and the guide rod are fixed on the first mounting base.

6. The plastic bag heat sealing machine according to claim 5, characterized in that: A second mounting base is provided on the heat source roller, and the heat source roller is rotatably connected to the second mounting base. A support plate is provided under the second mounting base, and the support plate is fixed on the frame platform. An electric heating wire is provided inside the heat source roller, and the electric heating wire is connected to an external power source.

7. The plastic bag heat sealing machine according to claim 6, characterized in that: It also includes a material guiding assembly. A set of material guiding assemblies is provided on the feeding side and the discharging side of the heat sealing mechanism. The material guiding assembly includes a rotating material guiding roller. The unsealed plastic bag is rolled on the discharging roller, passes through the material guiding assembly on the feeding side of the heat sealing mechanism, the heat sealing mechanism, and the material guiding assembly on the discharging side of the heat sealing mechanism in sequence, and is then rolled on the take-up roller.

8. The plastic bag heat sealing machine according to claim 7, characterized in that: The material guiding assembly also includes a support base, an adjusting screw, and a slider. The support base is respectively installed on the frame platform at both ends of the material guiding roller. The support base includes a partition plate and two first guide plates and two second guide plates respectively installed on the upper and lower sides of the partition plate. A slide rail is formed between the two first guide plates. The slider is installed in the slide rail. An adjusting screw is rotatably installed at the lower end of the slider. The adjusting screw passes through the partition plate and is threadedly connected to it. Both ends of the material guiding roller are respectively installed on the corresponding slider and are rotatably connected to it.

9. The plastic bag heat sealing machine according to claim 8, characterized in that: The lower ends of the two second guide plates are provided with fixing plates, and the two ends of the fixing plates are respectively fixed to the frame platform by bolts. Limiting plates are also provided on the outer sides of the two first guide plates.

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