Patent Application
20240158116
This application claims priority to Chinese Patent Application No. 202211414841.8 filed on Nov. 11, 2022, the entire contents of which are hereby incorporated by reference.
The present invention relates to the technical field of sealing devices, and particularly to a bag sealing machine.
In the existing bag sealing machines, the sealing length of the bag sealing machine with a vacuum function is constant, and the maximum sealing length is limited, whilst the bag sealing machine with variable sealing length does not have the vacuum function.
Chinese patent with the publication number of CN 209192338U discloses a vacuum hot sealing bag machine, which includes a machine body 1 and an upper cover 2. During in use, the bag is pressed between the machine body 1 and the upper cover 2, and then the opening of the bag is sealed after the air in the bag is extracted. The sealing length of this kind of bag sealing machine is constant and the maximum length is limited, so that it can only be used for bags within a specific length. When the length of the bag is too long, the bag sealing machine is not suitable and the application thereof is limited.
In order to solve the problem that the machine is unable to match the sealing length, Chinese patent with the publication number of CN 214730199U discloses a household portable mini sealing machine, which is described in paragraph as follows: “The user puts the plastic bag into the machine body 1, and then pushes the sealing mechanism 2 downwardly. The sealing mechanism 2 drives the fixing mechanism 3 to move downwardly until it comes into contact with the plastic bag, and thus the fixing mechanism 3 fixes the plastic bag. The sealing mechanism 2 continues to move downwards until it comes into contact with the plastic bag, and then the sealing mechanism 2 seals the plastic bag. After the plastic bag sealing is completed, the user stops pushing the sealing mechanism 2, the sealing mechanism 2 and the fixing mechanism 3 move upward by themselves to return to their original positions, and the plastic bag is then taken out from the machine body 1.” Although this sealing machine is suitable for bags of different lengths, it cannot achieve the vacuum function and is operated manually. In order to realize vacuum function, a bag with an aperture for vacuumizing is required, and it is evacuated through the aperture after the bag is sealed, which puts forward higher requirements for the bag.
In view of the shortcomings of the prior art, an object of the present invention is to provide a bag sealing machine to solve the technical problem that sealing and vacuumizing are incompatible when the sealing length of the bag is too long.
In order to achieve the above-mentioned object, a specific technical solution for the bag sealing machine of the present invention is as follows:
A bag sealing machine includes a machine head for hot melt sealing and a machine body for vacuum vacuumizing. The machine head includes an upper bin. A roller for driving the bag to move and a heat generating module cooperating with the roller to seal the bag are arranged in the upper bin. An upper sealing ring is arranged at an outer side of a groove of the upper bin. A lower bin is arranged in the machine body, a vacuum hole is defined in the lower bin, and a lower sealing ring corresponding to the upper sealing ring is arranged at an outer side of a groove of the lower bin. A lifting mechanism for driving the lower bin to move up and down is provided in the machine body. The bag is sent in through the roller mechanism, the heat generating module seals the opening of the bag through hot melt sealing, and the bag slides out when the hot melt sealing close to an end of the bag. At this time, a little of the opening of the bag is not yet sealed. The lower bin is driven to move upwardly by the lifting mechanism, so as to make the lower sealing ring arranged in the lower bin abut against the upper sealing ring to form a seal therebetween. A sealed chamber formed by the upper bin and the lower bin is vacuumized through the vacuum hole, and then the hot melt sealing is performed. After that, the lower bin moves downwardly and returns to its original position, and the bag is sent out through the roller mechanism. Through this bag sealing machine, the vacuumizing and sealing length may be unlimited in theory, that is, the length of the bag is not limited, so as to solve the technical problem that bag sealing and vacuumizing are incompatible when the sealing length of the bag is too long.
In some embodiments, a detection switch for detecting the bag is arranged between the machine head and the machine body. By means of the detecting of the detection switch, which may be a microswitch, a photoelectric switch or other switches, preferably a microswitch, automatic operation of sealing and vacuumizing is realized.
In some embodiments, a support plate extends downwardly from a lateral side of the groove of the upper bin, and the heat generating module is fixedly mounted to the support plate and arranged under the roller.
In some embodiments, the heat generating module includes a fixed housing fixed to the support plate, a bottom cover arranged at a bottom of the fixed housing, a heat transfer frame arranged in the fixed housing, and a heat generating element arranged in the heat transfer frame, a convex bar is provided on a top of the heat transfer frame, and a hole is defined in the fixed housing for avoiding the convex bar.
In some embodiments, a first motor for driving the roller to rotate is arranged at an outer side of the upper bin.
In some embodiments, the machine body includes an outer frame in which the lower bin and the lifting mechanism are arranged, and a side plate fixedly connected to the upper bin and the outer frame.
In some embodiments, a guiding strip for guiding the heat generating module is provided on an inner wall of the lower chamber, and an inner groove for receiving the lower sealing ring is defined in the lower bin.
In some embodiments, the outer frame is substantially U-shaped, and includes a first frame plate, two second frame plates fixedly connected to the left and right ends of the first frame plate, respectively, and position plates fixedly connected to the top and bottom ends of each second frame plate, respectively, and position holes are defined in the position plates.
In some embodiments, the lifting mechanism includes a bottom plate connected to a bottom of the outer frame and a lifting plate arranged on the bottom plate, flanges extend horizontally from two sides of the lower bin to two ends, respectively, each flange is provided with guiding sleeves and guiding columns which extend through the lifting plate and the guiding sleeves, a spring is mounted around the guiding column, and two ends of the guiding column are arranged in the position holes, respectively.
In some embodiments, a nut seat is fixedly arranged on the lifting plate, a screw rod is arranged in the nut seat, and a second motor for driving the screw rod to rotate is arranged under the bottom plate.
In some embodiments, an external heating module is embedded in the outer side of the groove of the upper bin and located at an outer side of the upper sealing ring, and a pressure-sealing arm cooperating with the external heating module is embedded in the lower bin.
The bag sealing machine provided by the invention has the following advantages:
The bag is sent in through the roller mechanism, the heat generating module seals the opening of the bag through hot melt sealing, and the bag slides out when the hot melt sealing close to an end of the bag. At this time, a little of the opening of the bag is not yet sealed. The lower bin is driven to move upwardly by the lifting mechanism, so as to make the lower sealing ring arranged in the lower bin abut against the upper sealing ring to form a seal therebetween. A sealed chamber formed by the upper bin and the lower bin is vacuumized through the vacuum hole, and then the hot melt sealing is performed. After that, the lower bin moves downwardly and returns to its original position, and the bag is sent out through the roller mechanism. In addition, by means of the detecting of the detection switch, automatic operation of sealing and vacuumizing is realized. Through this bag sealing machine, the vacuumizing and sealing length may be unlimited in theory, that is, the length of the bag is not limited, so as to solve the technical problem that bag sealing and vacuumizing are incompatible when the sealing length of the bag is too long.
For better illustrating the technical means, creative features, objects and effects of the present invention, detailed description will be given for the embodiments provided by the present invention with reference to the append drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to restrict the present invention.
Referring to
Referring to
Referring to
The bag is sent in through the roller mechanism 12 and slides in from a position where the microswitch 26 is arranged. The heat generating module seals the opening of the bag through hot melt sealing, and the bag slides out from the position where the microswitch 26 is arranged when the hot melt sealing close to an end of the bag. At this time, a little of the opening of the bag is not yet sealed. The lower bin 22 is driven to move upwardly by the lifting mechanism, so as to make the lower sealing ring 28 arranged in the lower bin 22 abut against the upper sealing ring 17 to form a seal therebetween. A sealed chamber formed by the upper bin 11 and the lower bin 22 is vacuumized through the vacuum hole 225, and then the hot melt sealing is performed. After that, the lower bin 22 moves downwardly and returns to its original position, and the bag is sent out through the roller mechanism 12. Through this bag sealing machine, the vacuumizing and sealing length may be unlimited in theory, that is, the length of the bag is not limited, so as to solve the technical problem that bag sealing and vacuumizing are incompatible when the sealing length of the bag is too long.
Automatic detection may be realized through the microswitch 26, which is faster and more accurate than manual judgment.
Specifically, referring to
A slot is defined at an outer side of the heat transfer frame 15, and a temperature sensor is arranged in the slot for obtaining the sealing temperature in real time and realizing temperature control. The heat transfer frame 15 is provided with positioning feet, through which the heat transfer frame 15 is positioned on the bottom cover 13. The fixed housing 16 is connected to the bottom cover 13 through screws. The fixed housing 16 and support plate 112 are respectively provided with screw holes, and are fixedly connected by screws.
In an embodiment, the first motor 122 is installed out of the upper bin 11, and a motor shaft of the first motor 122 is connected to the roller 121.
At an outer periphery of the first groove 111 of the upper chamber 11, an annular groove 113 and an L-shaped groove 114 are arranged from the inside to the outside. 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 module 18 is arranged in the L-shaped groove 114, and includes an L-shaped upper cover and a lower cover. A bottom of the lower cover is provided with a strip-shaped protrusion. The lower cover has a heat conduction function. A heating member is arranged between the upper cover and the lower cover. The heating member transfers the heat to the strip-shaped protrusion.
Referring to
An outer side of the inner groove 222 is provided with an outer groove 223. A pressure-sealing arm 29 cooperating with the outer heat generating module 18 is arranged in the outer groove 223. The external heating module 18 and the pressure-sealing arm 29 construct a second hot-sealing mechanism of the bag sealing machine, which enriches the product functions and expands the product application scenarios.
Referring to
Refer to
A nut seat 233 is fixedly arranged on the lifting plate 23, and a screw rod 234 is arranged in the nut seat 233. A second motor 25 for driving the screw rod 234 to rotate is arranged under the bottom plate 24.
The second motor 25 drives the screw rod 234 to rotate, which cooperates with the nut seat 233 to drive the lifting plate 23 to move up and down. The lifting plate 23 lifts the lower bin 22 through the spring 232. On the contrary, when the lifting plate 23 moves downwardly, the lower bin 22 moves downwardly under the reset action of the spring 232.
In summary, the present invention provides a bag sealing machine that: the bag is sent in through the roller mechanism and slides in from a position where the microswitch is arranged, the heat generating module seals the opening of the bag through hot melt sealing, and the bag slides out from the position where the microswitch is arranged when the hot melt sealing close to an end of the bag. At this time, a little of the opening of the bag is not yet sealed. The lower bin is driven to move upwardly by the lifting mechanism, so as to make the lower sealing ring arranged in the lower bin abut against the upper sealing ring to form a seal therebetween. A sealed chamber formed by the upper bin and the lower bin is vacuumized through the vacuum hole, and then the hot melt sealing is performed. After that, the lower bin moves downwardly and returns to its original position, and the bag is sent out through the roller mechanism. Through this bag sealing machine, the vacuumizing and sealing length may be unlimited in theory, that is, the length of the bag is not limited, so as to solve the technical problem that bag sealing and vacuumizing are incompatible when the sealing length of the bag is too long.
The above merely provides the preferred embodiments of the present invention, which is illustrative, rather than restrictive, to the present invention. However, it should be understood by those skilled in the art that, many variations, modifications even substitutions that do not depart from the spirit and scope defined by the present invention, shall fall into the extent of protection of the present invention.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202211414841.8 | Nov 2022 | CN | national |
