A bag sealing machine

Abstract

This invention relates to the field of sealing device technology. To address the technical problem of incompatibility between sealing and vacuuming when the bag's sealing length is too long, this invention discloses a bag sealing machine. The machine head includes an upper chamber containing rollers for driving the bag's movement and a heating element that cooperates with the rollers for sealing. An upper sealing ring is located on the outer side of the upper chamber's slot. A lower chamber is located inside the machine body, containing a vacuum hole. A lower sealing ring, corresponding to the upper sealing ring, is located on the outer side of the lower chamber's slot. The machine body also includes a lifting mechanism for driving the lower chamber's up-and-down movement. A small section of the bag remains unsealed. The lifting mechanism lifts the lower chamber to seal it against the upper chamber, creating a vacuum in the sealed chamber. The bag is then heat-sealed. After completion, the lower chamber returns to its original position while the rollers eject the bag. This machine is compatible with bags of different lengths, enabling sealing and vacuuming operations, and conveniently vacuuming and heat-sealing various sizes of bags.

Description

Technical Field

[0001] This invention relates to the field of sealing device technology, and more particularly to a bag sealing machine. Background Technology

[0002] Existing bag sealing machines, for those with vacuum sealing capabilities, have a fixed sealing length, with a limited maximum length. However, bag sealing machines with variable sealing lengths lack vacuum sealing capabilities.

[0003] Chinese invention patent CN209192338U discloses a vacuum heat sealing bag machine, which includes a machine body 1 and a top cover 2. When in use, the bag is pressed between the machine body 1 and the top cover 2, the gas inside the bag is extracted, and then the bag opening is heat sealed. The sealing length of this type of bag sealing machine is fixed and the maximum length is limited. It can only be used for bags within a specific length. When the bag length is too long, the bag sealing machine cannot be used, thus limiting its application.

[0004] To address the issue of adaptability to different bag lengths, Chinese invention patent CN214730199U discloses a portable mini sealing machine for home use. Paragraph

[0022] states: "Place the plastic bag into the machine body 1, then push the sealing mechanism 2 downwards. The sealing mechanism 2 drives the fixing mechanism 3 downwards. The fixing mechanism 3 moves downwards until it contacts the plastic bag, fixing the plastic bag. The sealing mechanism 2 continues to move downwards until it contacts the plastic bag again, sealing the plastic bag. After the plastic bag is sealed, the user stops pushing the sealing mechanism 2, and the sealing mechanism 2 and fixing mechanism 3 move upwards to their original positions. Then, the plastic bag is removed from the machine body 1." While this sealing machine can accommodate bags of different lengths, it cannot perform vacuuming and is manually operated. To achieve vacuuming, a bag with a vacuum interface is required, and vacuuming is then performed specifically through the vacuum interface after sealing, placing higher demands on the bag. Summary of the Invention

[0005] The purpose of this invention is to provide a bag sealing machine that addresses the shortcomings of existing technologies by solving the technical problem of incompatibility between the sealing length of bags being too long and vacuuming.

[0006] To achieve the above objectives, the specific technical solution of the bag sealing machine of the present invention is as follows:

[0007] A bag sealing machine includes a head for heat sealing and a body for vacuuming. The head includes an upper chamber containing rollers for driving the bag and a heating element that cooperates with the rollers for sealing. An upper sealing ring is provided on the outer side of the slot in the upper chamber. The body contains a lower chamber with a vacuum hole. A lower sealing ring, corresponding to the upper sealing ring, is provided on the outer side of the slot in the lower chamber. The body also includes a lifting mechanism for driving the lower chamber to move up and down. The bag is fed in by the roller mechanism, and the heating element heat seals it. When the bag reaches the tail end, a small section of the bag remains unsealed. The lifting mechanism then lifts the lower chamber, causing the lower sealing ring to abut against the upper sealing ring for sealing. A vacuum is created in the sealed chamber formed by the upper and lower chambers through the vacuum hole, followed by heat sealing. After completion, the lower chamber descends back to its original position while the bag is ejected by the roller mechanism. With this bag sealing machine, the length of vacuuming and sealing can theoretically be unlimited, that is, there is no limit to the length of the bag, thus solving the technical problem that the sealing length of the bag is too long and vacuuming is incompatible.

[0008] Furthermore, a micro switch for detecting the bag is installed between the machine head and the machine body. The detection switch, which can be a micro switch, photoelectric switch, or other switches, preferably a micro switch, enables fully automatic operation of automatic sealing and automatic vacuuming.

[0009] Furthermore, the upper compartment has a lower ear plate extending downward from the slot side, and the heating element is fixedly installed on the ear plate, with the heating element located below the roller.

[0010] Furthermore, the heating element includes a fixed housing fixed to the ear plate, a bottom cover is provided at the bottom of the fixed housing, a heat conduction frame is provided inside the fixed housing, a heating element is installed inside the heat conduction frame, a protrusion is provided at the top of the heat conduction frame, and the fixed housing has slots for avoiding the protrusion.

[0011] Furthermore, a first motor for driving the rollers to rotate is installed on the outside of the upper compartment.

[0012] Furthermore, the fuselage includes an outer frame, a lower compartment, and a lifting mechanism, all housed within the outer frame. Side plates are also provided that are fixedly connected to the upper compartment and the outer frame.

[0013] Furthermore, the inner wall of the lower compartment is provided with guide strips for guiding the heating components, and the lower compartment is provided with an inner ring groove for embedding the lower sealing ring.

[0014] Furthermore, the outer frame is U-shaped and includes a first frame side plate. The left and right ends of the first frame side plate are fixedly connected to a second frame side plate, and the upper and lower ends of the second frame side plate are fixedly connected to positioning plates with positioning holes.

[0015] Furthermore, the lifting mechanism includes a base plate connected to the bottom of the outer frame, a lifting plate located above the base plate, and lugs extending horizontally to both ends on both sides of the lower compartment. Guide sleeves are provided on the lugs, and guide posts penetrating the lifting plate and guide sleeves are also provided. Springs are sleeved on the guide posts, and both ends of the guide posts are respectively located in positioning holes.

[0016] Furthermore, a nut seat is fixedly installed in the lifting plate, and a screw is installed inside the nut seat. A second motor for driving the screw to rotate is installed below the base plate.

[0017] Furthermore, an external heating component is embedded on the outside of the slot of the upper chamber. The external heating component is located on the outside of the upper sealing ring, and a pressure sealing arm that cooperates with the external heating component is embedded in the lower chamber.

[0018] The bag sealing machine provided by this invention has the following advantages:

[0019] The bag is fed in via a roller mechanism, and the heating element heat-seals it. When it reaches the tail end of the bag, a small section remains unsealed. A lifting mechanism then raises the lower chamber, causing the lower sealing ring to align with the upper sealing ring. A vacuum is then created in the sealed chamber formed by the upper and lower chambers through a vacuum port, followed by heat-sealing. After completion, the lower chamber returns to its original position, and the bag is ejected via the roller mechanism. Furthermore, a microswitch detection system enables fully automatic sealing and vacuuming. Theoretically, the vacuuming and sealing lengths of this bag-sealing machine are unlimited, meaning there is no limit to bag length, thus solving the technical problem of incompatibility between excessively long sealing lengths and vacuuming. Attached Figure Description

[0020] Figure 1 This is an exploded view of the three-dimensional structure of the bag sealing machine provided by the present invention;

[0021] Figure 2 This invention provides a first-view exploded view of the nose section.

[0022] Figure 3 This is an exploded view of the nose section from a second perspective, provided by the present invention.

[0023] Figure 4 This invention provides a first-view exploded view of the fuselage.

[0024] Figure 5 This is a second-view exploded view of the fuselage provided by the present invention;

[0025] Figure 6 The lower compartment structure diagram provided by the present invention;

[0026] Figure 7 This is a structural diagram of the outer frame provided for the present invention.

[0027] In the diagram: 10. Head; 20. Body; 30. Side plate; 11. Upper compartment; 12. Roller mechanism; 13. Bottom cover; 14. Heating element; 15. Heat conduction frame; 16. Fixed outer shell; 17. Upper sealing ring; 18. External heating assembly; 111. First groove; 112. Ear plate; 113. Annular groove; 114. L-shaped groove; 121. Roller; 122. First motor; 161. Slot; 21. Outer frame; 22. Lower compartment; 23. Lifting plate; 24. Bottom plate; 25. Second motor 26. Micro switch; 27. Sealing wire clamp; 28. Lower sealing ring; 29. ​​Pressure sealing arm; 211. First frame side plate; 212. Second frame side plate; 213. Positioning plate; 214. Spring tab clearance opening; 215. Mounting plate; 221. Second groove; 222. Inner ring groove; 223. Outer groove; 224. Wire hole; 225. Vacuum hole; 226. Guide strip; 227. Ear; 228. Guide sleeve; 231. Guide post; 232. Spring; 233. Nut seat; 234. Screw. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0029] See Figure 1 The present invention provides a bag sealing machine, including a machine head 10 for heat sealing and a machine body 20 for vacuuming. The machine head 10 and the machine body 20 are fixedly installed on a side plate 30, and a bag inlet and outlet are formed between the machine head 10 and the machine body 20. A micro switch 26 for detecting the bag entry and exit status is provided between the machine head 10 and the machine body 20.

[0030] See Figure 2 and Figure 3 The machine head 10 includes an upper chamber 11, a heating element, and a roller mechanism 12. The roller mechanism 12 includes a roller 121 and a first motor 122 that drives the roller 121 to rotate. A first groove 111 is provided in the upper chamber 11, and the roller 121 is disposed in the first groove 111. An ear plate 112 extends vertically downward from the groove side of the upper chamber 11. The heating element is fixedly installed on the ear plate 112. The heating element is located below the roller 121. An upper sealing ring 17 is provided on the outer side of the groove of the upper chamber 11.

[0031] See Figures 4 to 6The body 20 is provided with a lower compartment 22, and a second groove 211 is provided in the lower compartment 22. The second groove 211 is provided with a vacuum hole 225 communicating with the outside. The second groove 211 is provided with a wire passage hole 224 communicating with the outside for wiring and sealing. A sealing wire clip 27 is provided in the wire passage hole 224. A lower sealing ring 28 corresponding to the upper sealing ring 17 is provided on the outside of the groove of the lower compartment 22. The body 20 is also provided with a lifting mechanism for driving the lower compartment 22 to move up and down.

[0032] The bag is fed in via roller mechanism 12 and slides in through microswitch 26. The heating element heat-seales the bag. When it reaches the tail end, it slides out through microswitch 26, leaving a small unsealed section. The lower chamber 22 is then lifted by a lifting mechanism, causing the lower sealing ring 28 to abut against the upper sealing ring 17 for sealing. A vacuum is then created in the sealed chamber formed by the upper chamber 11 and lower chamber 22 through a vacuum hole, followed by heat-sealing. After completion, the lower chamber 22 returns to its original position while the bag is ejected via roller mechanism 12. This bag-sealing machine theoretically allows for unlimited vacuuming and sealing lengths, solving the technical problem of incompatibility between excessively long sealing lengths and vacuuming.

[0033] The micro switch 26 enables automatic detection, which is faster and more accurate than manual judgment.

[0034] Specifically, see Figure 2 and Figure 3 The heating assembly includes a fixed housing 16 fixed to the ear plate 112. A bottom cover 13 is provided at the bottom of the fixed housing 16. A heat-conducting frame 15 is disposed inside the fixed housing 16, and a heating element 14 is installed inside the heat-conducting frame 15. An arc-shaped protrusion is provided at the top of the heat-conducting frame 15. The fixed housing 16 has slots 161 cut out to avoid the protrusion. Rollers 121 and the protrusion are used to clamp the bag body. When the heating element 14 heats up, it transfers heat to the protrusion to heat-seal the bag body and achieve a sealing effect.

[0035] The outer side of the heat-conducting frame 15 is provided with a groove, and a temperature sensing element is installed in the groove to obtain the sealing temperature in real time and realize temperature control. The heat-conducting frame 15 is provided with positioning feet, which are positioned on the bottom cover 13. The fixed outer shell 16 is connected to the bottom cover 13 by screws. The fixed outer shell 16 and the ear plate 112 are respectively provided with screw holes, and the two are fixedly connected by screws.

[0036] In one embodiment, a first motor 122 is mounted on the outside of the upper chamber 11, and the motor shaft of the first motor 122 is connected to the roller 121.

[0037] Around the first groove 111 in the upper compartment 11, an annular groove 113 and an L-shaped groove 114 are provided from the inside out. The upper sealing ring 17 is embedded in the annular groove 113, and the thickness of the upper sealing ring 17 is greater than the depth of the annular groove 113. An external heating component is installed in the L-shaped groove 114. The external heating component includes an L-shaped upper cover and a lower cover. A strip-shaped protrusion is provided at the bottom of the lower cover. The lower cover has a heat-conducting function. A heating element is provided between the upper cover and the lower cover. The heating element conducts heat to the strip-shaped protrusion.

[0038] See Figure 4 and Figure 5 The body 20 includes an outer frame 21, a lower compartment 22 and a lifting mechanism disposed inside the outer frame 21. The inner wall of the second groove 211 in the lower compartment 22 is provided with a guide strip 226 for guiding the heating component. The lower compartment 22 is provided with an inner ring groove 222 for embedding the lower sealing ring. The inner ring groove 222 is located in the outer area of ​​the second groove 211.

[0039] An outer groove 223 is provided on the outside of the inner ring groove 222. A sealing arm 29 that cooperates with the outer heating component 18 is installed in the outer groove 223. The outer heating component 18 and the sealing arm 29 constitute the second heat sealing mechanism in the bag sealing machine, which enriches the product functions and expands the product application scenarios.

[0040] See Figure 7 The outer frame 21 is U-shaped and includes a first frame side plate 211. The left and right ends of the first frame side plate 211 are fixedly connected to a second frame side plate 212. The upper and lower ends of the second frame side plate 212 are fixedly connected to positioning plates 213, which are provided with positioning holes. A spring tab clearance slot 214 is provided on the upper part of one side of the positioning plate 213. A mounting plate 215 connected to the positioning plate 213 is provided on the lower side of the spring tab clearance slot 214. A micro switch 26 is mounted on the mounting plate 215. The micro switch 26 has a spring tab located in the spring tab clearance slot 214. Limiting structures for the micro switch 26 are respectively provided at corresponding positions of the upper compartment 11 and the lower compartment 22.

[0041] See Figures 4 to 6 The lifting mechanism includes a base plate 24 connected to the bottom of the outer frame 21, a lifting plate 23 located above the base plate 24, and lugs 227 extending horizontally to both ends on both sides of the lower compartment 22. Guide sleeves 228 are provided on the lugs 227, and guide posts 231 penetrating the lifting plate 23 and the guide sleeves 228 are also provided. Springs 232 are sleeved on the guide posts 231, and the two ends of the guide posts 231 are respectively located in positioning holes.

[0042] A nut seat 233 is fixedly installed in the lifting plate 23, and a screw 234 is installed inside the nut seat 233. A second motor 25 for driving the screw 234 to rotate is installed below the base plate 24.

[0043] The second motor 25 drives the screw 234 to rotate. The screw 234 interacts with the nut seat 233, which in turn drives the lifting plate 23 to rise or fall. The lifting plate 23 lifts the lower compartment 22 via the spring 232. Conversely, when the lifting plate 23 falls, the lower compartment 22 falls under the reset action of the spring 232.

[0044] In summary, the bag sealing machine provided by this invention feeds the bag into the machine via a roller mechanism. The bag slides in through a microswitch, and a heating element heat-seals it. When the bag reaches the tail end, it slides out through the microswitch, leaving a small section unsealed. A lifting mechanism then raises the lower chamber, causing the lower sealing ring to abut against the upper sealing ring for a seal. A vacuum is created in the sealed chamber formed by the upper and lower chambers through a vacuum hole, followed by heat-sealing. After completion, the lower chamber descends back to its original position while the bag is ejected via the roller mechanism. This bag sealing machine theoretically allows for unlimited vacuuming and sealing lengths, thus solving the technical problem of incompatibility between excessively long bag seals and vacuuming.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A bag sealing machine characterized by comprising: The application relates to a machine head (10) for hot melt sealing and a machine body (20) for vacuumizing, wherein the machine head (10) comprises an upper warehouse body (11), a roller (121) for driving the movement of a bag body is arranged in the upper warehouse body (11), a heating assembly for cooperating with the roller (121) to seal is further arranged, an upper sealing ring (17) is arranged on the outer side of the slot of the upper warehouse body (11); the machine body (20) is provided with a lower warehouse body (22), the lower warehouse body (22) is provided with a vacuum hole (225), a lower sealing ring (28) corresponding to the upper sealing ring (17) is arranged on the outer side of the slot of the lower warehouse body (22), the machine body (20) is further provided with a lifting mechanism for driving the up-down movement of the lower warehouse body (22); a detection switch for detecting the bag body is arranged between the machine head (10) and the machine body (20), the bag body is sent into through the roller mechanism, the bag body slides out of the microswitch when reaching the tail of the bag body, and a small length of the bag body is not sealed; the lower warehouse body is lifted through the lifting mechanism, the lower sealing ring arranged on the lower part of the lower warehouse body is abutted and sealed with the upper sealing ring, the sealed cavity formed by the upper warehouse body and the lower warehouse body is vacuumized through the vacuum hole, and then hot melt sealing is carried out.

2. A bag sealer as claimed in claim 1, wherein The slot side of the upper warehouse body (11) extends downwardly with an ear plate (112), the heating assembly is fixedly installed on the ear plate (112), and the heating assembly is arranged below the roller (121).

3. A bag sealer as claimed in claim 2, wherein The heating assembly comprises a fixed shell (16) fixed on the ear plate (112), the bottom of the fixed shell (16) is provided with a bottom cover (13), a heat conducting frame (15) is arranged in the fixed shell (16), a heating body (14) is installed in the heat conducting frame (15), the top of the heat conducting frame (15) is provided with a convex strip, and the fixed shell (16) is hollowed out with a groove hole (161) for avoiding the convex strip.

4. A bag sealer as defined in claim 1, wherein The machine body (20) comprises an outer frame body (21), the lower warehouse body (22) and the lifting mechanism are arranged in the outer frame body (21), and a side plate (30) fixedly connected with the upper warehouse body (11) and the outer frame body (21) is further arranged.

5. A bag sealer as claimed in claim 4, wherein The inner wall of the lower warehouse body (22) is provided with a guide strip (226) for guiding the heating assembly, and the lower warehouse body (22) is provided with an inner ring groove (222) for inlaying the lower sealing ring (28).

6. A bag sealer as claimed in claim 5, wherein The outer frame body (21) is in a U shape and comprises a first frame edge plate (211), left and right ends of the first frame edge plate (211) are fixedly connected with a second frame edge plate (212), upper and lower ends of the second frame edge plate (212) are fixedly connected with a positioning plate (213), and the positioning plate (213) is provided with a positioning hole.

7. A bag sealer as claimed in claim 6, wherein The lifting mechanism comprises a bottom plate (24) connected with the bottom of the outer frame (21), a jacking plate (23) above the bottom plate (24), and ear edges (227) horizontally extending to both ends on both sides of the lower bin body (22), wherein guide sleeves (228) are arranged on the ear edges (227), guide columns (231) penetrating through the jacking plate (23) and the guide sleeves (228) are further arranged, springs (232) are sleeved on the guide columns (231), and both ends of the guide columns (231) are arranged in the positioning holes, respectively.

8. A bag sealer as claimed in claim 7, wherein A nut seat (233) is fixedly arranged in the jacking plate (23), a screw rod (234) is arranged in the nut seat (233), and a second motor (25) for driving the screw rod (234) to rotate is arranged below the bottom plate (24).

9. A bag sealer according to any one of claims 1 to 8, wherein An outer heating assembly (18) is further inlaid on the outer side of the notch of the upper bin body (11), the outer heating assembly (18) is located on the outer side of the upper sealing ring (17), and a compression sealing arm (29) matched with the outer heating assembly (18) is inlaid in the lower bin body (22).

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