Heat sealing mechanism and packaging machine

Abstract

The utility model discloses a heat sealing mechanism and a packing machine, the heat sealing mechanism comprises a heat sealing seat, a heat sealing cover and a pressing piece, the heat sealing seat forms a placing area of a packing bag, the pressing piece is movably arranged in the placing area and is used for pressing a bag opening of the packing bag, and the pressing piece is used for pressing the packing bag. And the heat sealing cover covers the placing area in an openable and closable manner, is matched with the heat sealing seat, and is used for heat-sealing and pressing a packaging bag of a bag opening. According to the utility model, the problem of untight heat sealing caused by displacement or wrinkling of the bag opening of the packaging bag is avoided, and the sealing performance of the packaging bag is ensured.

Description

Technical Field

[0001] This utility model relates to the field of heat-sealing packaging technology, and in particular to a heat-sealing mechanism and packaging machine. Background Technology

[0002] Packaging machines are widely used in food, pharmaceutical, and electronics industries. They primarily use heat sealing to seal placed packaging bags, achieving the goals of preservation, moisture prevention, and oxidation prevention. Because packaging bag materials (such as plastic film) are highly flexible, the bag opening can easily shift or wrinkle during placement, leading to problems like incomplete or inadequate sealing during subsequent heat sealing, thus affecting the packaging's sealing performance. Utility Model Content

[0003] The main purpose of this utility model is to provide a heat-sealing mechanism to solve the problem of incomplete heat sealing caused by displacement or wrinkles at the opening of the packaging bag, thereby ensuring the sealing performance of the packaging.

[0004] To achieve the above objectives, the present invention proposes a heat-sealing mechanism comprising: a heat-sealing seat, a heat-sealing cover, and a pressing member. The heat-sealing seat forms a placement area for a packaging bag. The pressing member is movably disposed in the placement area for pressing the opening of the packaging bag. The heat-sealing cover is closably disposed in the placement area and cooperates with the heat-sealing seat for heat-sealing the packaging bag with the pressed opening.

[0005] Optionally, the pressing component includes an upper pressure plate, a lower pressure strip, and a transmission structure. The lower pressure strip is disposed in the placement area, the upper pressure plate is disposed above the lower pressure strip, and the transmission structure is connected to the upper pressure plate and the lower pressure strip so that the upper pressure plate and the lower pressure strip move relative to each other to press the opening of the packaging bag.

[0006] Optionally, the upper pressure plate includes an upper pressure strip and two surrounding rods. The two surrounding rods are disposed opposite to each other at both ends of the upper pressure strip. The upper pressure strip cooperates with the lower pressure strip to press the bag opening of the packaging bag. The two surrounding rods are respectively connected to the transmission structure so that the transmission structure drives the upper pressure strip through the two surrounding rods.

[0007] Optionally, the transmission structure includes two transmission ends spaced apart, which are respectively connected to the retaining rod and the lower pressure strip. The heat sealing seat is equipped with a lifting structure, which is used to drive the two transmission ends to move in opposite directions to transmit the retaining rod and the lower pressure strip.

[0008] Optionally, the heat sealing seat includes a base and a heat sealing plate. The heat sealing plate is rotatably disposed on the base. The heat sealing plate forms the placement area on the surface opposite to the base. The transmission structure rotates with the heat sealing plate so that when rotating, the two transmission ends are acted upon by the lifting structure and move in opposite directions.

[0009] Optionally, the lifting structure includes a guide rail and a first telescopic member and a second telescopic member disposed at both ends of the guide rail. The guide rail protrudes from one side of the base. The first telescopic member is used to guide the transmission structure into the guide rail to drive the two transmission ends. The second telescopic member is used to push the transmission structure out of the guide rail to reset the two transmission ends.

[0010] Optionally, a first spring is provided between the transmission structure and the heat-sealing plate. The first spring extends along the thickness direction of the heat-sealing plate. The transmission structure stretches the first spring by rotation, which is used to reset the two transmission ends when the transmission structure is disengaged from the guide rail.

[0011] Optionally, the surface of the base is provided with an arc-shaped track, which protrudes from the outside of the guide rail. The heat-sealing cover is connected to a trigger that passes through the heat-sealing disc. The arc-shaped track is used to abut the trigger so that the heat-sealing cover can be opened and closed to cover the placement area as the heat-sealing disc rotates.

[0012] Optionally, the heat sealing mechanism includes a plurality of heat sealing caps and a plurality of pressing elements. The heat sealing disc forms a plurality of placement areas arranged in a circle. Each placement area is provided with the pressing element and the heat sealing cap, so that a plurality of packaging bags are sequentially pressed and heat sealed as the heat sealing disc rotates.

[0013] This utility model also proposes a packaging machine, including the heat sealing mechanism described above.

[0014] In the technical solution of this utility model, the heat sealing seat forms a placement area for the packaging bag, and the pressing member is movably disposed in the placement area. The pressing member presses the opening of the packaging bag, and the heat sealing cover is detachably disposed in the placement area and cooperates with the heat sealing seat to heat seal the packaging bag opening. This achieves the pressing and heat sealing of the packaging bag opening, avoiding the problem of incomplete heat sealing caused by displacement or wrinkles of the packaging bag opening, and ensuring the sealing performance of the packaging. Attached Figure Description

[0015] 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 the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the heat sealing mechanism according to an embodiment of the present invention;

[0017] Figure 2for Figure 1 A schematic diagram of the heat sealing mechanism.

[0018] Figure 3 for Figure 2 Schematic diagram of the middle clamping component;

[0019] Figure 4 for Figure 2 A schematic diagram of the lifting structure in the middle;

[0020] Figure 5 for Figure 3 Another perspective view of the clamping component;

[0021] Figure 6 for Figure 2 Installation diagram of the heat seal cap;

[0022] Explanation of icon numbers:

[0023] name label name label heat sealing mechanism 1000 Clamping parts 500 Heat seal seat 100 upper pressure plate 510 Placement area 100a Upper strip 511 heat-sealed tray 110 fence 513 Second heating element 111 Down pressure strip 520 base 130 Transmission structure 530 curved track 131 Drive wheel 531 Lifting structure 200 First link 532 guide 210 Second link 533 First telescopic component 220 First connecting rod 534 Second telescopic component 230 Second connecting rod 535 Heat seal 300 First support rod 536 First heating element 310 Second support rod 537 Trigger 400 roller 538 Activity wheel 410 First spring 540 Second spring 420

[0024] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0027] See Figures 1 to 6 As shown, in one embodiment of this utility model, a heat sealing mechanism 1000 includes: a heat sealing seat 100, a heat sealing cover 300, and a pressing member 500. The heat sealing seat 100 forms a placement area 100a for packaging bags. The pressing member 500 is movably disposed in the placement area 100a for pressing the opening of the packaging bag. The heat sealing cover 300 is detachably disposed on the placement area 100a and cooperates with the heat sealing seat 100 for heat sealing and pressing the opening of the packaging bag.

[0028] In the technical solution of this utility model, the heat sealing seat 100 forms a placement area 100a for the packaging bag, the pressing member 500 is movably disposed in the placement area 100a, the pressing member 500 presses the opening of the packaging bag, and the heat sealing cover 300 is openably and closably disposed on the placement area 100a and cooperates with the heat sealing seat 100, thereby heat sealing the packaging bag opening, thus realizing the pressing and heat sealing of the packaging bag opening, avoiding the problem of poor heat sealing caused by the displacement or wrinkles of the packaging bag opening, and ensuring the sealing performance of the packaging.

[0029] It should be noted that in this embodiment, the heat-sealing cap 300 is equipped with a first heating element 310, and the heat-sealing seat 100 is equipped with a second heating element 111. The first heating element 310 and the second heating element 111 achieve heat sealing by clamping the opening of the packaging bag. Furthermore, to achieve a stable heat-sealing effect on the packaging bag, the first heating element 310 and the second heating element 111 can move relative to each other, thereby heat-sealing the clamped packaging bag through relative movement. For vacuum packaging, the heat-sealing seat 100 and the heat-sealing cap 300 in this embodiment can be provided with vacuum holes, through which external vacuum equipment can be connected. After the opening of the packaging bag is compressed, vacuum heat sealing is then performed. This embodiment is not limited to this, and all of the above are within the protection scope of this utility model. In this embodiment, the heat-sealing cover 300 is detachably and closably placed on the placement area 100a. The heat-sealing cover 300 can be rotatably connected to the heat-sealing seat 100, snap-fit ​​connected to the heat-sealing seat 100, or slot-connected to the heat-sealing seat 100, as long as the first heating element 310 of the heat-sealing cover 300 can cooperate with the second heating element 111 of the heat-sealing seat 100 to achieve heat sealing. This embodiment is not limited to these, and all of the above are within the protection scope of this utility model. Further explanation: In this embodiment, the clamping member 500 is disposed between the heat-sealing seat 100 and the heat-sealing cover 300. The clamping member 500 is recessed within the heat-sealing cover 300 and disposed inside the first heating element 310 and the second heating element 111. In this way, the clamping member 500 presses against the opening of the packaging bag, and the first heating element 310 and the second heating element 111 heat seal the outer opening of the packaging bag, thereby achieving heat sealing of the packaging bag opening. Of course, the clamping member 500 can be rotatably disposed in the placement area 100a or detachably disposed in the placement area 100a, as long as it can move to clamp the opening of the packaging bag to facilitate the taking and putting of the packaging bag. This embodiment is not limited to this, and all of the above are within the protection scope of this utility model.

[0030] See Figures 1 to 6As shown, in one embodiment of this utility model, the pressing member 500 includes an upper pressing plate 510, a lower pressing strip 520, and a transmission structure 530. The lower pressing strip 520 is disposed in the placement area 100a, the upper pressing plate 510 is disposed above the lower pressing strip 520, and the transmission structure 530 is connected to the upper pressing plate 510 and the lower pressing strip 520, so that the upper pressing plate 510 and the lower pressing strip 520 move relative to each other to press the opening of the packaging bag. It should be noted that in this embodiment, the opening of the packaging bag is pressed by the relative movement of the upper pressing plate 510 and the lower pressing strip 520. When the upper pressing plate 510 and the lower pressing strip 520 are far apart, the packaging bag can be smoothly placed in the placement area 100a; when the upper pressing plate 510 and the lower pressing strip 520 are close to each other, the upper pressing plate 510 and the lower pressing strip 520 clamp the opening of the packaging bag, thereby realizing the pressing of the opening of the packaging bag. In this embodiment, the relative movement of the upper pressure plate 510 and the lower pressure strip 520 is realized through the transmission structure 530. Thus, the packaging bag is pressed into the placement area 100a by the mutual moving away and moving closer to each other of the upper pressure plate 510 and the lower pressure strip 520, thereby realizing the automatic pressing of the packaging bag.

[0031] See Figures 1 to 6 As shown, in one embodiment of this utility model, the upper pressure plate 510 includes an upper pressure strip 511 and two surrounding rods 513. The two surrounding rods 513 are disposed opposite to each other at both ends of the upper pressure strip 511. The upper pressure strip 511 cooperates with the lower pressure strip 520 to press the opening of the packaging bag. The two surrounding rods 513 are respectively connected to the transmission structure 530, so that the transmission structure 530 drives the upper pressure strip 511 through the two surrounding rods 513. It should be noted that in this embodiment, the two surrounding rods 513 are disposed opposite to each other, and the upper pressure strip 511 is connected between the two surrounding rods 513. The transmission structure 530 drives the upper pressure strip 511 by driving the two surrounding rods 513 to move synchronously, thereby ensuring the stability of the movement of the upper pressure strip 511 relative to the lower pressure strip 520. In this way, the upper pressure strip 511 and the lower pressure strip 520 stably press the opening of the packaging bag, thereby preventing the opening of the packaging bag from shifting or wrinkling, thus improving the sealing performance of the packaging. Preferably, in this embodiment, the upper pressure strip 511 is provided with a plurality of air passage holes, which are distributed along the length of the upper pressure strip 511. In this way, while pressing the packaging bag, the packaging bag forms an air passage channel at the position of the corresponding air passage hole, and the air inside the packaging bag flows out through the air passage channel, which is conducive to vacuum heat sealing of the packaging bag and achieves the purpose of food preservation and anti-oxidation.

[0032] See Figures 1 to 6As shown, in one embodiment of this utility model, the transmission structure 530 includes two transmission ends spaced apart, which are respectively connected to the retaining rod 513 and the lower pressure strip 520. The heat sealing seat 100 is equipped with a lifting structure 200, which drives the two transmission ends to move in opposite directions, thereby transmitting the retaining rod 513 and the lower pressure strip 520. It should be noted that in this embodiment, the two transmission ends of the transmission structure 530 form a seesaw structure, with opposite directions of movement between the two transmission ends. When one transmission end rises, the other transmission end falls, and when one transmission end falls, the other transmission end rises, thus achieving relative proximity or distance between the upper pressure strip 511 and the lower pressure strip 520. In this embodiment, the relative movement of the upper pressure plate 510 and the lower pressure strip 520 is achieved by driving the transmission structure 530 to rise and fall through the lifting structure 200, thereby pressing the packaging bag tightly against the placement area 100a, improving the level of intelligence, and facilitating automated heat sealing.

[0033] See Figures 1 to 6As shown, in one embodiment of the present invention, the heat sealing seat 100 includes a base 130 and a heat sealing plate 110. The heat sealing plate 110 is rotatably disposed on the base 130. The heat sealing plate 110 forms a placement area 100a on the surface away from the base 130. The transmission structure 530 rotates with the heat sealing plate 110 so that when rotating, the two transmission ends are acted on by the lifting structure 200 and move in opposite directions. It should be noted that the transmission structure 530 in this embodiment includes a transmission wheel 531, a first connecting rod 532, a second connecting rod 533, a first connecting rod 534, and a second connecting rod 535. The first connecting rod 534 and the second connecting rod 535 are arranged side by side, and the first connecting rod 532 and the second connecting rod 533 are arranged opposite to each other between the first connecting rod 534 and the second connecting rod 535, so that the first connecting rod 534 and the second connecting rod 535 form a seesaw structure, thereby causing the first connecting rod 534 and the second connecting rod 535 to move in opposite directions. The two ends of the first connecting rod 534 are respectively connected to the two surrounding rods 513 through two first support rods 536, and the two ends of the second connecting rod 535 are connected to the two ends of the lower pressure bar 520 through two second support rods 537. The first connecting rod 534 between the first connecting rod 532 and the second connecting rod 533 is provided with a transmission wheel 531. Thus, as the transmission wheel 531 rotates with the heat sealing disc 110, the lifting structure 200 acts on the transmission wheel 531 to cause the transmission wheel 531 to move up and down, thereby causing the first connecting rod 534 and the second connecting rod 535 to move in opposite directions, thereby driving the first support rod 536 and the first support rod 536 to move in opposite directions, thereby realizing the relative movement of the upper pressure strip 511 and the lower pressure strip 520, thereby pressing the bag opening of the packaging bag tightly against the placement area 100a. Specifically, when the lifting structure 200 drives the transmission wheel 531 to rise, under the action of the first connecting rod 532 and the second connecting rod 533, the first connecting rod 534 rises along with the transmission wheel 531, thereby driving the upper pressure bar 511 to rise through the first support rod 536 and the surrounding rod 513. A seesaw structure is formed between the first connecting rod 534 and the second connecting rod 535, and the second connecting rod 535 falls along with the rise of the first connecting rod 534, thereby driving the lower pressure bar 520 to fall through the second support rod 537. Thus, the upper pressure bar 511 and the lower pressure bar 520 move away from each other, thereby realizing the positioning of the packaging bag in the placement area 100a. When the lifting structure 200 drives the transmission wheel 531 to descend, under the action of the first connecting rod 532 and the second connecting rod 533, the first connecting rod 534 descends with the transmission wheel 531, thereby driving the upper pressure bar 511 to descend through the first support rod 536 and the surrounding rod 513. A seesaw structure is formed between the first connecting rod 534 and the second connecting rod 535. The second connecting rod 535 rises with the descent of the first connecting rod 534, thereby driving the lower pressure bar 520 to rise through the second support rod 537. Thus, the upper pressure bar 511 and the lower pressure bar 520 move closer to each other to achieve the pressing of the packaging bag in the placement area 100a.To better drive the second connecting rod 535, rollers 538 are fitted at both ends of the second connecting rod 535. The first connecting rod 532 and the second connecting rod 533 drive the second connecting rod 535 by pressing the rollers 538. In this embodiment, the rotation of the heat sealing disc 110 realizes automatic pressing of the packaging bag, thereby improving the heat sealing efficiency of the packaging bag and facilitating automated heat sealing.

[0034] See Figures 1 to 6 As shown, in one embodiment of this utility model, the lifting structure 200 includes a guide rail 210 and a first telescopic member 220 and a second telescopic member 230 disposed at both ends of the guide rail 210. The guide rail 210 protrudes from one side of the base 130. The first telescopic member 220 is used to guide the transmission structure 530 into the guide rail 210 to drive the two transmission ends. The second telescopic member 230 is used to guide the transmission structure 530 out of the guide rail 210 to reset the two transmission ends. It should be noted that the first telescopic member 220 and the second telescopic member 230 can be telescopic cylinders or telescopic electric cylinders, as long as they can realize telescopic movement. This embodiment is not limited to this, and all of the above are within the protection scope of this utility model. When the drive wheel 531 rotates onto the first telescopic member 220, the first telescopic member 220 rises to guide the drive wheel 531 into the guide rail 210, thereby raising the drive wheel 531. This causes the two drive ends to move in opposite directions, moving the upper pressure strip 511 and the lower pressure strip 520 away from each other, thus positioning the packaging bag in the placement area 100a. When the drive wheel 531 rotates onto the second telescopic member 230, the second telescopic member 230 descends to disengage the drive wheel 531 from the guide rail 210, causing the drive wheel 531 to descend. This causes the two drive ends to move in opposite directions, moving the upper pressure strip 511 and the lower pressure strip 520 closer together, thus pressing the opening of the packaging bag in the placement area 100a. In this embodiment, the lifting structure 200 automatically presses the opening of the packaging bag in the placement area 100a as the heat-sealing plate 110 rotates, achieving automatic pressing of the packaging bag.

[0035] See Figures 1 to 6As shown, in one embodiment of this utility model, a first spring 540 is provided between the transmission structure 530 and the heat-sealing plate 110. The first spring 540 extends along the thickness direction of the heat-sealing plate 110. The transmission structure 530 stretches the first spring 540 by rotating, which is used to reset the two transmission ends when the transmission structure 530 is disengaged from the guide rail 210. It should be noted that, in this embodiment, under the action of the first spring 540, when the transmission wheel 531 rotates onto the first telescopic member 220, the first telescopic member 220 guides the transmission wheel 531 into the track and rises. The two transmission ends move in opposite directions, and the upper pressure bar 511 and the lower pressure bar 520 move away from each other. The first spring 540 is stretched and stores elastic potential energy. When the transmission wheel 531 rotates onto the second telescopic member 230, the second telescopic member 230 pushes the transmission wheel 531 out of the track and lowers. The first spring 540 releases the stored elastic potential energy, and the two transmission ends move in opposite directions, and the upper pressure bar 511 and the lower pressure bar 520 move closer to each other. In this embodiment, the setting of the first spring 540 enables the automatic reset of the upper pressure bar 511 and the lower pressure bar 520, thereby pressing the bag opening and improving the degree of automation.

[0036] See Figures 1 to 6As shown, in one embodiment of this utility model, an arc-shaped track 131 is protruding from the surface of the base 130. The arc-shaped track 131 protrudes from the outer side of the guide rail 210. The heat-sealing cover 300 is connected to a trigger 400 that passes through the heat-sealing plate 110. The arc-shaped track 131 is used to abut against the trigger 400 so that the heat-sealing cover 300 can be opened and closed to cover the placement area 100a as the heat-sealing plate 110 rotates. It should be noted that in this embodiment, the heat-sealing cover 300 is connected to a trigger 400. The trigger 400 passes through the heat-sealing disc 110 and engages with the arc-shaped track 131. When the trigger 400 rotates with the heat-sealing disc 110 and enters the arc-shaped track 131, the arc-shaped track 131 presses against the trigger 400 and drives the heat-sealing cover 300 to rise, thereby separating the heat-sealing cover 300 from the heat-sealing disc 110 and opening the placement area 100a to place the packaging bag. When the trigger 400 rotates with the heat-sealing disc 110 and leaves the arc-shaped track 131, the trigger 400 loses the support of the arc-shaped track 131 and drives the heat-sealing cover 300 to descend, thereby closing the heat-sealing cover 300 onto the heat-sealing disc 110 and closing the placement area 100a to achieve heat sealing of the packaging bag. Of course, in order to achieve stable operation of the trigger 400 on the arc track 131, a movable wheel 410 can be provided at the end of the trigger 400 away from the heat sealing cover 300. During the rotation of the heat sealing plate 110, the movable wheel 410 moves along the arc track 131, thereby realizing the opening and closing of the placement area 100a. In order to realize the automatic opening and closing of the heat sealing plate 110, a second spring 420 can be provided between the base 130 and the trigger 400 in this embodiment. When the trigger 400 is supported by the arc track 131 and rises, the heat sealing cover 300 is pushed up from the surface of the heat sealing plate 110, and the second spring 420 is stretched to store elastic potential energy; when the trigger 400 is disengaged from the arc track 131 and falls down, the second spring 420 releases the stored elastic potential energy, and the heat sealing cover 300 falls back to the surface of the heat sealing plate 110, thereby realizing the automatic opening and closing of the heat sealing cover 300. In this embodiment, the arc-shaped track 131 protrudes from both ends of the guide rail 210. As the heat-sealing disc 110 rotates, the trigger 400 abuts against the arc-shaped track 131, and the heat-sealing cover 300 is lifted from the surface of the heat-sealing disc 110. Then, the lifting structure 200 acts on the transmission structure 530, causing the upper pressure strip 511 and lower pressure strip 520 to move away from each other, thus transferring the packaging bag to the placement area 100a, thereby setting the packaging bag in the placement area 100a. Next, the transmission structure 530 disengages from the lifting structure 200, and the upper pressure strip 511 and lower pressure strip 520 move closer together, thereby pressing the opening of the packaging bag. Then, the trigger 400 disengages from the arc-shaped track 131, and the heat-sealing cover 300 closes onto the surface of the heat-sealing disc 110, thereby heat-sealing the packaging bag with its opening pressed. This embodiment achieves automatic pressing and heat-sealing of the packaging bag, improving the heat-sealing efficiency of the packaging bag and realizing automated heat sealing.

[0037] See Figures 1 to 6As shown, in one embodiment of this utility model, the heat sealing mechanism 1000 includes multiple heat sealing covers 300 and multiple pressing members 500. The heat sealing disc 110 forms multiple placement areas 100a arranged in a circle. Each placement area 100a is provided with a pressing member 500 and a heat sealing cover 300, so that multiple packaging bags are sequentially pressed and heat-sealed as the heat sealing disc 110 rotates. It should be noted that in this embodiment, when the transmission structure 530 runs to the position of the lifting structure 200, it forms the material placement position and the material removal position of the packaging bag. At this time, the heat sealing cover 300 is lifted from the surface of the heat sealing disc 110 and the upper pressing strip 511 and the lower pressing strip 520 move away from each other, so that the packaging bag to be heat-sealed can be placed or the heat-sealed packaging bag can be removed. When the trigger member 400 rotates to disengage from the arc track 131, the heat sealing cover 300 covers the surface of the heat sealing disc 110 and the upper pressing strip 511 and the lower pressing strip 520 move closer to each other, so as to heat-seal the packaging bag with the bag mouth pressed. This embodiment sets up multiple packaging bag placement areas 100a, and the packaging bags in each placement area 100a are pressed and heat-sealed in sequence, thereby realizing automatic heat sealing of the packaging bags and improving the heat sealing effect of the packaging bags.

[0038] See Figures 1 to 6 As shown, in one embodiment of this utility model, a packaging machine includes the aforementioned heat sealing mechanism 1000. The heat sealing mechanism 1000 includes a heat sealing seat 100, a heat sealing cover 300, and a pressing member 500. The heat sealing seat 100 forms a placement area 100a for packaging bags. The pressing member 500 is movably disposed in the placement area 100a for pressing the opening of the packaging bag. The heat sealing cover 300 is detachably disposed on the placement area 100a and cooperates with the heat sealing seat 100 for heat sealing and pressing the opening of the packaging bag. It should be noted that in this embodiment, the heat-sealing seat 100 forms a placement area 100a for the packaging bag, and the clamping member 500 is movably disposed in the placement area 100a. The clamping member 500 clamps the opening of the packaging bag, and the heat-sealing cover 300 is openably and closably disposed in the placement area 100a and cooperates with the heat-sealing seat 100 to heat-seal the packaging bag opening, thereby achieving a tight heat seal on the opening of the packaging bag. This avoids the problem of incomplete heat sealing caused by displacement or wrinkles of the packaging bag opening, and ensures the sealing performance of the packaging.

[0039] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A heat-sealing mechanism, characterized in that, include: The package includes a heat-sealing seat, a heat-sealing cap, and a pressing component. The heat-sealing seat forms a placement area for packaging bags. The pressing component is movably disposed in the placement area for pressing the opening of the packaging bag. The heat-sealing cap is closable and covers the placement area and cooperates with the heat-sealing seat for heat-sealing and pressing the opening of the packaging bag.

2. The heat sealing mechanism as described in claim 1, characterized in that, The pressing component includes an upper pressure plate, a lower pressure strip, and a transmission structure. The lower pressure strip is located in the placement area, the upper pressure plate is located above the lower pressure strip, and the transmission structure is connected to the upper pressure plate and the lower pressure strip so that the upper pressure plate and the lower pressure strip move relative to each other to press the opening of the packaging bag.

3. The heat sealing mechanism as described in claim 2, characterized in that, The upper pressure plate includes an upper pressure strip and two surrounding rods. The two surrounding rods are disposed opposite to each other at both ends of the upper pressure strip. The upper pressure strip cooperates with the lower pressure strip to press the opening of the packaging bag. The two surrounding rods are respectively connected to the transmission structure so that the transmission structure drives the upper pressure strip through the two surrounding rods.

4. The heat sealing mechanism as described in claim 3, characterized in that, The transmission structure includes two transmission ends spaced apart, which are respectively connected to the retaining rod and the lower pressure strip. The heat sealing seat is equipped with a lifting structure, which is used to drive the two transmission ends to move in opposite directions to transmit the retaining rod and the lower pressure strip.

5. The heat sealing mechanism as described in claim 4, characterized in that, The heat sealing seat includes a base and a heat sealing plate. The heat sealing plate is rotatably disposed on the base. The heat sealing plate forms the placement area on the surface opposite to the base. The transmission structure rotates with the heat sealing plate so that the two transmission ends are acted upon by the lifting structure and move in opposite directions during rotation.

6. The heat-sealing mechanism as described in claim 5, characterized in that, The lifting structure includes a guide rail and a first telescopic member and a second telescopic member disposed at both ends of the guide rail. The guide rail protrudes from one side of the base. The first telescopic member is used to guide the transmission structure into the guide rail to drive the two transmission ends. The second telescopic member is used to push the transmission structure out of the guide rail to reset the two transmission ends.

7. The heat sealing mechanism as described in claim 6, characterized in that, A first spring is provided between the transmission structure and the heat-sealing plate. The first spring extends along the thickness direction of the heat-sealing plate. The transmission structure stretches the first spring by rotating, which is used to reset the two transmission ends when the transmission structure is disengaged from the guide rail.

8. The heat sealing mechanism as described in claim 6, characterized in that, The base has an arc-shaped track protruding from its surface, which protrudes from the outside of the guide rail. The heat-sealing cover is connected to a trigger that passes through the heat-sealing disc. The arc-shaped track is used to abut the trigger so that the heat-sealing cover can be opened and closed to cover the placement area as the heat-sealing disc rotates.

9. The heat sealing mechanism as described in claim 8, characterized in that, The heat sealing mechanism includes multiple heat sealing caps and multiple pressing elements. The heat sealing disc forms multiple placement areas arranged in a circle. Each placement area is provided with the pressing element and the heat sealing cap, so that multiple packaging bags are sequentially pressed and heat sealed as the heat sealing disc rotates.

10. A packaging machine, characterized in that, Includes the heat sealing mechanism according to any one of claims 1 to 9.

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