Liquid-filled bag sealing device and operation method

Abstract

The present invention discloses a liquid-filled bag sealing device and an operating method. The liquid-filled bag has a closed end and an open end. The sealing device includes a frame, at least one clamping mechanism, a sealing hot pressing mechanism, at least one punching mechanism and a transfer mechanism. The clamping mechanism is used to clamp the open end of the liquid-filled bag. The sealing hot pressing mechanism includes a hot pressing mold and a first driving mechanism. The first driving mechanism is used to drive the hot pressing mold to move up and down along the height direction of the frame. The hot pressing mold includes a heating device and a die pressing head. The die pressing head is used to heat-seal the open end of the liquid-filled bag. The device includes a punching mold and a second driving mechanism. The punching mechanism is used to punch the sealed end of the liquid-filled bag. The liquid-filled bag sealing device provided by the present invention eliminates the risk of crushing by providing a clamping mechanism. The punching mechanism punches instead of manual cutting, fixes the punching margin, and has beautiful molding and improves the yield rate. The sealing hot pressing mechanism, the punching mechanism and the clamping mechanism work together to greatly improve production efficiency.

Description

Technical Field

[0001] The present invention relates to the field of sealing equipment, and in particular to a liquid-filled bag sealing device and an operating method. Background Art

[0002] Currently, sealing an oil bag (a liquid-filled bag used in bra cups, consisting of a hollow bag containing an oily filler or other liquid) requires manual effort, holding the bag at one end, placing it under a heating block, and applying pressure to seal it. Afterward, the excess seal material is manually trimmed with scissors. This approach poses the risk of crushing fingers and being cut by the scissors. The scissors also create irregular cuts, resulting in inconsistent seal appearance, which not only affects aesthetics but also easily leads to damage and scraping, resulting in poor product quality and a low yield rate. This also results in low labor efficiency. Summary of the Invention

[0003] In order to solve the problems existing in the prior art, the present invention provides a liquid-filled bag sealing device and an operating method, and the technical solution is as follows:

[0004] The present invention provides a sealing device for a liquid-filled bag, wherein the liquid-filled bag has a closed end and an open end, and comprises:

[0005] frame;

[0006] at least one clamping mechanism disposed on the frame, the clamping mechanism being used to clamp the open end of the liquid-filled bag;

[0007] A sealing and hot pressing mechanism is provided on the frame, the sealing and hot pressing mechanism comprising a hot pressing mold and a first driving mechanism, the first driving mechanism being used to drive the hot pressing mold to move up and down along the height direction of the frame, the hot pressing mold comprising a heating device and a die pressing head, the heating device being used to heat the die pressing head, and the die pressing head being used to heat-seal the open end of the liquid-filled bag;

[0008] At least one punching mechanism, located on one side of the sealing and hot pressing mechanism, the punching mechanism comprising a punching die and a second driving mechanism;

[0009] a transfer mechanism, which is used to drive the clamping mechanism to move so that the liquid-filled bag is located below the punching die of the punching mechanism;

[0010] The second driving mechanism is used to drive the punching die to move up and down along the height direction of the frame to punch the sealed end of the liquid-filled bag.

[0011] Furthermore, the frame includes a workbench for placing the clamping mechanism, the workbench is provided with at least one vertically arranged support plate, each clamping mechanism includes an upper support member and a lower support member arranged opposite to each other in upper and lower directions, a clamping claw rotatably connected to the lower support member, and a third driving mechanism connected to the upper support member, the lower support member is fixedly connected to the support plate;

[0012] Driven by the third drive mechanism, the clamping jaw rotates relative to the lower support member, causing the lower end of the clamping jaw to press against or release the liquid-filled bag. Furthermore, the transfer mechanism includes a fourth drive mechanism and a fifth drive mechanism. The fourth drive mechanism is configured to drive the clamping mechanism to move in a first direction, and the fifth drive mechanism is configured to drive the clamping mechanism to move in a second direction, wherein the first direction is perpendicular to the second direction.

[0013] Furthermore, the liquid-filled bag sealing device also includes at least two protective pads, which are respectively arranged under the sealing hot pressing mechanism and the punching mechanism, and the protective pads are used to place the liquid-filled bag.

[0014] Furthermore, the liquid-filled bag sealing device further comprises an inclined plate arranged on a side of the protective pad, and the inclined plate maintains an angle with a horizontal plane.

[0015] Furthermore, the punching die includes a cutter head, and the cutter head of the punching die and the pressing head of the hot pressing die are both arc-shaped structures.

[0016] Furthermore, the clamping mechanisms are provided in two, the punching mechanisms are provided in two, and the two punching mechanisms are respectively provided on the left and right sides of the sealing and hot pressing mechanism.

[0017] Furthermore, a waste material suction mechanism is provided on the discharge side of the punching mechanism away from the sealing and hot pressing mechanism.

[0018] The present invention also provides an operating method based on the liquid-filled bag sealing device, which comprises the following steps:

[0019] S1. Place a liquid-filled bag on the clamping mechanism, use the third drive mechanism to drive the clamping jaws to press the liquid-filled bag on the first clamping mechanism, then use the fourth drive mechanism to drive the clamping mechanism to move in a first direction to a preset molding station, and then use the first drive mechanism to drive the molding head to heat-seal the liquid-filled bag to a preset sealing position;

[0020] S2. Using the fifth driving mechanism to drive the clamping mechanism to move in the second direction so that the sealed liquid-filled bag is located below the punching die of the punching mechanism. Using the second driving mechanism to drive the punching die to move until it contacts the liquid-filled bag, thereby punching the sealed end of the liquid-filled bag.

[0021] S3. The liquid-filled bags that have been punched are discharged from the discharge port.

[0022] The present invention further provides an operating method based on the liquid-filled bag sealing device, wherein two punching mechanisms are provided, and the two punching mechanisms are respectively provided on the left and right sides of the sealing and hot pressing mechanism; two clamping mechanisms are provided, and the two clamping mechanisms are located between the two punching mechanisms, comprising the following steps:

[0023] S1. Place a liquid-filled bag on two clamping mechanisms. Two pressing clamping mechanisms clamp the liquid-filled bag thereon, respectively. Then, a fourth driving mechanism drives the two clamping mechanisms to move in a first direction until one clamping mechanism moves to a preset molding station. Then, the first driving mechanism drives the molding head to heat-seal the liquid-filled bag to a preset sealing position.

[0024] S2. Using the fifth driving mechanism, the two clamping mechanisms move in the second direction, so that the sealed liquid-filled bag moves to below the punching die of one punching mechanism to punch the sealed end of the liquid-filled bag. Simultaneously, the other clamping mechanism moves to a preset molding station, and the sealing hot-pressing mechanism performs hot-pressing on the liquid-filled bag on the clamping mechanism.

[0025] S3. The liquid-filled bag that has been punched is discharged from the discharge port, a new liquid-filled bag is placed on the clamping mechanism that has been punched, and the fifth driving mechanism drives the two clamping mechanisms to move in the second direction, so that the liquid-filled bag that has been hot-pressed and sealed moves to under the punching die of the other punching mechanism, so that the sealed end of the liquid-filled bag is punched, and the liquid-filled bag that has been punched is discharged from the discharge port; at the same time, the clamping mechanism on which the new liquid-filled bag is placed moves to a preset molding station, and the sealing hot-pressing mechanism hot-presses and seals the liquid-filled bag on this clamping mechanism;

[0026] S4. Repeat steps S2 and S3.

[0027] The beneficial effects brought about by the technical solution provided by the present invention are as follows:

[0028] a. The liquid-filled bag sealing device provided by the present invention eliminates the risk of crushing by providing a clamping mechanism; the punching mechanism replaces manual cutting, fixes the punching margin, and produces beautiful shapes, thereby improving the yield rate;

[0029] b. The liquid-filled bag sealing equipment provided by the present invention greatly improves production efficiency through the coordinated work of the sealing hot pressing mechanism, the punching mechanism and the clamping mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 is a perspective view of a liquid-filled bag sealing device provided by an embodiment of the present invention from a first perspective;

[0032] Figure 2 is a perspective view of the liquid-filled bag sealing device provided by an embodiment of the present invention from a second perspective;

[0033] Figure 3 It is a three-dimensional diagram of the clamping mechanism of the liquid-filled bag sealing device provided in an embodiment of the present invention.

[0034] Among them, the figure marks include: 1-liquid-filled bag, 2-clamping mechanism, 21-upper support member, 22-lower support member, 23-third driving mechanism, 24-clamping claw, 3-heating device, 4-molding head, 5-first driving mechanism, 51-telescopic rod, 6-punching mold, 7-second driving mechanism, 8-support plate, 9-protective pad, 10-tilt plate, 11-waste suction mechanism, 12-fourth driving mechanism, 13-fifth driving mechanism, 14-workbench, 15-connecting block, 16-mounting plate, 17-limiting table. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0036] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, apparatus, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0037] In one embodiment of the present invention, a liquid-filled bag sealing device is provided. Figure 1 and Figure 2 The liquid-filled bag 1 has a closed end and an open end, and includes a frame, at least one clamping mechanism 2, a sealing and hot pressing mechanism, at least one punching mechanism and a transfer mechanism. The sealing and hot pressing mechanism and the punching mechanism are both arranged on the mounting plate 16 of the frame.

[0038] The clamping mechanism 2 is arranged on the frame, and is used to press and clamp the open end of the liquid-filled bag to fix this end, which is convenient for subsequent hot pressing sealing and punching. The clamping claws clamp the liquid-filled bag instead of pinching it by hand, eliminating the risk of crushing.

[0039] The sealing and hot pressing mechanism is arranged on the frame, and the sealing and hot pressing mechanism includes a hot pressing mold and a first driving mechanism 5. The first driving mechanism 5 is used to drive the hot pressing mold to move up and down along the height direction of the frame. The hot pressing mold includes a heating device 3 and a die pressing head 4. The heating device 3 is used to heat the die pressing head 4 so that the die pressing head 4 reaches a preset temperature. The die pressing head 4 is used to heat seal the open end of the liquid-filled bag 1 so that the open end is sealed.

[0040] The punching mechanism is located on one side of the sealing and hot pressing mechanism, and the punching mechanism includes a punching die 6 and a second driving mechanism 7; the transfer mechanism is used to drive the clamping mechanism 2 to move so that the liquid-filled bag 1 is located below the punching die 6 of the punching mechanism; the punching die 6 includes a cutter head, and the second driving mechanism 7 is used to drive the punching die 6 to move up and down along the height direction of the frame to punch the sealed end of the liquid-filled bag 1, and cut off the excess part from the seal to the open end to form a fully enclosed liquid-filled bag, which can be suitable for different occasions, such as inside the bra mold cup.

[0041] The specific structure of the clamping mechanism 2 is as follows: Figure 3 The frame includes a workbench 14 for placing the clamping mechanism 2, and at least one vertically arranged support plate 8 is provided on the workbench 14, and the support plate 8 corresponds to the clamping mechanism 2 one by one.

[0042] Each clamping mechanism 2 includes an upper support member 21 and a lower support member 22 arranged opposite to each other in the upper and lower directions, a clamping jaw 24 rotatably connected to the upper support member 21 and the lower support member 22, and a third driving mechanism 23 connected to the upper support member 21, and the lower support member 22 is fixedly connected to the support plate 8; the clamping jaw 24 includes a connecting member and a fastener, and the fastener has a hook end, and the two ends of the connecting member are respectively connected to the upper support member 21 and the lower support member 22. Under the drive of the third driving mechanism 23, the clamping jaw 24 rotates relative to the lower support member 22 with the connection between the lower support member 22 and the clamping jaw 24 as the center, so that the lower end of the clamping jaw 24 (the hook end of the fastener) presses against the liquid-filled bag 1 or moves away from the liquid-filled bag (the liquid-filled bag can be loosened when moving away). When the clamping jaws 24 clamp the liquid-filled bag 1, the hooked end of the clamping jaws 24 presses against the liquid-filled bag 1. When the liquid-filled bag 1 is punched, the hooked end of the clamping jaws 24 moves away from the liquid-filled bag 1 to release. The third driving mechanism 23 is preferably a cylinder.

[0043] The third drive mechanism 23 is fixed to the support plate 8. The cylinder's output shaft is connected to the upper support member 21. The support plate 8 is provided with a through hole for the cylinder's output shaft to pass through. When the third drive mechanism 23 drives the upper support member 21 to move horizontally away from the support plate 8, the lower end of the clamping jaw 24 contacts the liquid-filled bag 1 to compress the liquid-filled bag 1. When the third drive mechanism 23 drives the upper support member 21 to move horizontally toward the support plate 8, the clamping jaw 24 rises upward, with its lower end away from the liquid-filled bag 1, to release the liquid-filled bag 1.

[0044] The transfer mechanism includes a fourth drive mechanism 12 and a fifth drive mechanism 13. The fourth drive mechanism 12 is used to drive the clamping mechanism 2 to move along a first direction (front-back direction, perpendicular to the left-right direction), and the fifth drive mechanism 13 is used to drive the clamping mechanism 2 to move along a second direction (left-right direction, see Figure 1 The first direction is perpendicular to the second direction, and the liquid-filled bag 1 is moved to a preset molding station by adjusting the fourth driving mechanism 12 and the fifth driving mechanism 13, so that the preset sealing position of the liquid-filled bag 1 is aligned with the molding head.

[0045] The liquid-filled bag sealing device also includes at least two protective pads 9, which are respectively arranged below the sealing and hot pressing mechanism and the punching mechanism. The protective pads 9 are used to place the liquid-filled bag 1. The protective pads 9 include a base and a protective layer detachably arranged on the outer surface of the base. The protective layer is made of nylon and provides a cushion during molding or punching to prevent damage to the liquid-filled bag. The base is a rectangular parallelepiped structure. If the protective layer on one surface is damaged, it can be flipped over to the opposite surface for continued use, reducing consumables.

[0046] The liquid-filled bag sealing device also includes an inclined plate 10 positioned on the side of the protective pad 9. The inclined plate 10 maintains an angle with the horizontal plane. When the liquid-filled bag is clamped by the clamping mechanism, the bag tilts and droops along the inclined plate 10. This prevents backflow of liquid within the bag and allows the bag to automatically fall after punching. A connecting block 15 connects the inclined plate to the workbench 14, making it removable.

[0047] Because the liquid-filled bags require arc-shaped seals, the blades of the punching die 6 and the ram 4 of the hot-pressing die are preferably arc-shaped. Based on the different seal shapes required for the liquid-filled bags, the blades of the punching die 6 and the ram 4 of the hot-pressing die are designed with corresponding structures. Curved blade punching replaces manual cutting, ensuring a fixed arc, consistent margins, and regular arc edges. This results in a consistent and aesthetically pleasing appearance for the oil bag seals, improving product yield.

[0048] The two punching mechanisms are respectively provided with a waste suction mechanism 11 on the discharge side away from the sealing and hot pressing mechanism. The waste after punching is discharged through the waste suction mechanism 11. The waste suction mechanism is preferably an exhaust vacuum cleaner, which does not require manual operation and keeps the surface of the workbench 14 clean.

[0049] The first driving mechanism 5 includes a driving plate and a telescopic rod 51 disposed on the driving plate and capable of moving up and down, and the hot pressing mold is disposed at the lower end of the telescopic rod 51. The telescopic rod 51 is driven electrically, pneumatically or hydraulically.

[0050] Furthermore, the liquid-filled bag sealing device further includes a limiting mechanism, which is used to limit the deviation of the workbench and the clamping mechanism on the workbench when the workbench moves in the front-to-back direction. The limiting mechanism includes a limiting platform 17.

[0051] Furthermore, the liquid-filled bag sealing equipment also includes a weighing device, which is used to weigh the liquid-filled bags in the initial state (unpunched liquid-filled bags) and the liquid-filled bags after punching to ensure that the weight of the liquid-filled bags is within a preset weight threshold range to ensure product quality.

[0052] The present invention also provides an operating method of the liquid-filled bag sealing device, wherein each of the clamping mechanism and the punching mechanism is provided in one piece, and the method comprises the following steps:

[0053] S1. Hot pressing: A liquid-filled bag is placed on the clamping mechanism. The third drive mechanism 23 drives the clamping jaws to press the liquid-filled bag 1 on the first clamping mechanism. The fourth drive mechanism 12 then drives the clamping mechanism to move in a first direction to a preset molding station. The first drive mechanism 5 then drives the molding head 4 to heat-seal the open end of the liquid-filled bag 1, forming a seal.

[0054] S2. Punching: The fifth driving mechanism 13 is used to drive the clamping mechanism to move in the second direction, so that the sealed liquid-filled bag 1 is located below the punching die 6 of the punching mechanism. The second driving mechanism 7 is used to drive the punching die 6 to move until it contacts the liquid-filled bag 1, so as to punch the sealed end of the liquid-filled bag 1.

[0055] S3, the clamping jaws are released, and the punched liquid-filled bag is discharged from the discharge port into the storage container below it;

[0056] S4. Repeat steps S1, S2 and S3.

[0057] The present invention also provides an operating method of the liquid-filled bag sealing device, wherein two punching mechanisms are provided, and the two punching mechanisms are respectively provided on the left and right sides of the sealing and hot pressing mechanism; two clamping mechanisms 2 are provided, and the two clamping mechanisms 2 are located between the two punching mechanisms, comprising the following steps:

[0058] S1. Place a liquid-filled bag on two clamping mechanisms. Two pressing clamping mechanisms clamp the liquid-filled bag thereon, respectively. Then, a fourth driving mechanism drives the two clamping mechanisms to move in a first direction until one clamping mechanism moves to a preset molding station. Then, the first driving mechanism drives the molding head to heat-seal the liquid-filled bag to a preset sealing position.

[0059] S2. Using the fifth driving mechanism, the two clamping mechanisms move in the second direction, so that the sealed liquid-filled bag moves to below the punching die of one punching mechanism to punch the sealed end of the liquid-filled bag. Simultaneously, the other clamping mechanism moves to a preset molding station, and the sealing hot-pressing mechanism performs hot-pressing on the liquid-filled bag on the clamping mechanism.

[0060] S3. The liquid-filled bag that has been punched is discharged from the discharge port, a new liquid-filled bag is placed on the clamping mechanism that has been punched, and the fifth driving mechanism drives the two clamping mechanisms to move in the second direction, so that the liquid-filled bag that has been hot-pressed and sealed moves to under the punching die of the other punching mechanism, so that the sealed end of the liquid-filled bag is punched, and the liquid-filled bag that has been punched is discharged from the discharge port; at the same time, the clamping mechanism on which the new liquid-filled bag is placed moves to a preset molding station, and the sealing hot-pressing mechanism hot-presses and seals the liquid-filled bag on this clamping mechanism;

[0061] S4. Repeat steps S2 and S3.

[0062] The operation method of the liquid-filled bag sealing device provided above is specifically described as follows: the clamping mechanism 2 is provided with two, namely a first clamping mechanism and a second clamping mechanism.

[0063] A liquid-filled bag is placed on the workbench 14 corresponding to the first clamping mechanism and the second clamping mechanism respectively, and the third driving mechanism 23 is used to drive the clamping claws to press the liquid-filled bag 1 on the first clamping mechanism, and then the fourth driving mechanism 12 is used to drive the first clamping mechanism and the second clamping mechanism to move along the first direction (forward and backward direction), so that the first clamping mechanism is moved to the preset molding station, that is, the liquid-filled bag 1 of the first clamping mechanism is moved to the bottom of the sealing and hot pressing mechanism, so that the preset sealing position of the liquid-filled bag 1 is aligned with the molding head 4, and then the first driving mechanism 5 is used to drive the molding head 4 to heat-seal the open end of the liquid-filled bag 1, so that the open end is sealed.

[0064] Next, the fifth driving mechanism 13 is used to drive the first clamping mechanism to move in the second direction (left and right direction), so that the sealed liquid-filled bag 1 is located below the punching die 6 of the punching mechanism (this punching mechanism is located on the left side of the sealing and hot pressing mechanism), and the second driving mechanism 7 is used to drive the punching die 6 to move up and down along the height direction of the frame to punch the sealed end of the liquid-filled bag 1, and cut off the excess part from the seal to the open end to form a fully enclosed liquid-filled bag. After the punching is completed, the liquid-filled bag is discharged from the discharge port, and a new liquid-filled bag is placed. At the same time of punching, the liquid-filled bag 1 of the second clamping mechanism is aligned with the die pressing head 4 of the sealing and hot pressing mechanism, and the die pressing head molds the liquid-filled bag on the second clamping mechanism so that the open end forms a Sealing: The fifth driving mechanism 13 is used to drive the clamping mechanism 2 to move in the second direction (left and right direction), so that the sealed liquid-filled bag 1 is located below the punching die 6 of the punching mechanism (the punching mechanism is located on the right side of the sealing hot pressing mechanism), and the second driving mechanism 7 is used to drive the punching die 6 to move up and down along the height direction of the frame to punch the sealed end of the liquid-filled bag 1, and cut off the excess part from the seal to the open end to form a fully enclosed liquid-filled bag. After the punching is completed, the liquid-filled bag is discharged from the discharge port, and a new liquid-filled bag is placed, and the above steps are repeated. The two punching stations are alternately performed left and right, first molding and then punching, to realize automated processing, eliminate the risk of crushing, and have beautiful molding, improve the yield rate, and greatly improve production efficiency.

[0065] In this preferred embodiment, a molding station, a punching station located on both sides of the molding station and two clamping mechanisms are set up to realize molding and sealing of one liquid-filled bag and punching of the other liquid-filled bag after molding and sealing, thereby realizing automated processing and greatly improving work efficiency.

[0066] The liquid-filled bag sealing equipment provided by the present invention eliminates the risk of crushing injuries by providing a clamping mechanism; the punching mechanism replaces manual cutting, fixes the punching margins, and achieves beautiful molding, thereby improving the yield rate; the liquid-filled bag sealing equipment provided by the present invention greatly improves production efficiency through the coordinated work of the sealing hot pressing mechanism, the punching mechanism, and the clamping mechanism.

[0067] 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, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A liquid-filled bag sealing device, wherein the liquid-filled bag (1) has a closed end and an open end, characterized in that: include: frame; At least one clamping mechanism (2) is arranged on the frame, the clamping mechanism (2) is used to clamp the open end of the liquid-filled bag, the liquid-filled bag includes a hollow bag body, and the bag body contains oily filler or other liquid; a sealing hot pressing mechanism is arranged on the frame, the sealing hot pressing mechanism includes a hot pressing mold and a first driving mechanism (5), the first driving mechanism (5) is used to drive the hot pressing mold to move up and down along the height direction of the frame, the hot pressing mold includes a heating device (3) and a die pressing head (4), the heating device (3) is used to heat the die pressing head (4), and the die pressing head (4) is used to heat-seal the open end of the liquid-filled bag (1); At least one punching mechanism, located on one side of the sealing and hot pressing mechanism, the punching mechanism comprising a punching die (6) and a second driving mechanism (7); A transfer mechanism, which is used to drive the clamping mechanism (2) to move so that the liquid-filled bag (1) is located below the punching die (6) of the punching mechanism; The second driving mechanism (7) is used to drive the punching die (6) to move up and down along the height direction of the frame to punch the sealed end of the liquid-filled bag (1); The frame includes a workbench (14) for placing the clamping mechanism (2), at least one vertically arranged support plate (8) is provided on the workbench (14), each clamping mechanism (2) includes an upper support member (21) and a lower support member (22) arranged opposite to each other, a clamping claw (24) rotatably connected to the lower support member (22), and a third driving mechanism (23) connected to the upper support member (21), and the lower support member (22) is fixedly connected to the support plate (8); Under the drive of the third driving mechanism (23), the clamping jaw (24) rotates relative to the lower support member (22), so that the lower end of the clamping jaw (24) presses against the liquid-filled bag (1) or releases the liquid-filled bag (1); the clamping jaw (24) includes a connecting member and a fastener, and the fastener has a hook end, and the hook end is used to press against the liquid-filled bag (1); The liquid-filled bag sealing device further comprises at least two protective pads (9), the protective pads (9) being respectively arranged below the sealing hot pressing mechanism and the punching mechanism, and the protective pads (9) being used to place the liquid-filled bag (1); the liquid-filled bag sealing device further comprises an inclined plate (10) arranged on the side of the protective pad (9), and the inclined plate (10) maintains an angle with the horizontal plane.

2. The liquid-filled bag sealing device according to claim 1, characterized in that: The transfer mechanism comprises a fourth drive mechanism (12) and a fifth drive mechanism (13), wherein the fourth drive mechanism (12) is used to drive the clamping mechanism (2) to move along a first direction, and the fifth drive mechanism (13) is used to drive the clamping mechanism (2) to move along a second direction, wherein the first direction is perpendicular to the second direction.

3. The liquid-filled bag sealing device according to claim 1, characterized in that: The punching die (6) comprises a cutter head, and the cutter head of the punching die (6) and the pressing head (4) of the hot pressing die are both arc-shaped structures.

4. The liquid-filled bag sealing device according to claim 1, characterized in that: The clamping mechanisms (2) are provided in two numbers, and the punching mechanisms are provided in two numbers, and the two punching mechanisms are respectively provided on the left and right sides of the sealing and hot pressing mechanism.

5. The liquid-filled bag sealing device according to claim 4, characterized in that: A waste material suction mechanism (11) is provided on the discharge side of the punching mechanism away from the sealing and hot pressing mechanism.

6. An operating method of the liquid-filled bag sealing device according to any one of claims 1 to 5, characterized in that: The steps include: S1. Place a liquid-filled bag on the clamping mechanism, use the third drive mechanism to drive the clamping jaws to press the liquid-filled bag on the first clamping mechanism, then use the fourth drive mechanism to drive the clamping mechanism to move in a first direction to a preset molding station, and then use the first drive mechanism to drive the molding head to heat-seal the liquid-filled bag to a preset sealing position; S2. Using the fifth drive mechanism to drive the clamping mechanism to move in the second direction so that the sealed liquid-filled bag is located below the punching die of the punching mechanism. Using the second drive mechanism to drive the punching die to move until it contacts the liquid-filled bag, thereby punching the sealed end of the liquid-filled bag. S3. The liquid-filled bags that have been punched are discharged from the discharge port.

7. An operating method of the liquid-filled bag sealing device according to any one of claims 1 to 5, characterized in that: There are two punching mechanisms, which are respectively arranged on the left and right sides of the sealing and hot pressing mechanism; there are two clamping mechanisms, which are located between the two punching mechanisms, including the following steps: S1. Place a liquid-filled bag on two clamping mechanisms. Two pressing clamping mechanisms clamp the liquid-filled bag thereon, respectively. Then, a fourth driving mechanism drives the two clamping mechanisms to move in a first direction until one clamping mechanism moves to a preset molding station. Then, the first driving mechanism drives the molding head to heat-seal the liquid-filled bag to a preset sealing position. S2. Using the fifth driving mechanism, the two clamping mechanisms move in the second direction, so that the sealed liquid-filled bag moves to below the punching die of one punching mechanism to punch the sealed end of the liquid-filled bag. Simultaneously, the other clamping mechanism moves to a preset molding station, and the sealing hot-pressing mechanism performs hot-pressing on the liquid-filled bag on the clamping mechanism. S3. The liquid-filled bag that has been punched is discharged from the discharge port, a new liquid-filled bag is placed on the clamping mechanism that has been punched, and the fifth driving mechanism drives the two clamping mechanisms to move in the second direction, so that the liquid-filled bag that has been hot-pressed and sealed moves to under the punching die of the other punching mechanism, so that the sealed end of the liquid-filled bag is punched, and the liquid-filled bag that has been punched is discharged from the discharge port; at the same time, the clamping mechanism on which the new liquid-filled bag is placed moves to a preset molding station, and the sealing hot-pressing mechanism hot-presses and seals the liquid-filled bag on this clamping mechanism; S4. Repeat steps S2 and S3.

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