Automatic vacuum bag sealing structure and bag sealing production line

Abstract

The invention provides an automatic vacuum bag sealing structure and a bag sealing production line. The sealing module, the heat sealing module, the supporting and clamping module and the vacuum module are sequentially arranged on the rack at intervals from front to back; the vacuum module at least comprises a vacuum suction nozzle and is used for stretching into the packaging bag to vacuumize a bag opening; and the supporting and clamping module and the vacuum module are arranged on the Y-axis driving module, and the Y-axis driving module can drive the bag opening assembly and the vacuum suction nozzle to sequentially pass through the sealing module and the heat sealing module until the bag opening assembly and the vacuum suction nozzle are separated. The invention relates to the technical field of packaging bag heat sealing, through driving of a Y-axis driving module, corresponding bag opening assemblies and vacuum suction nozzles in an opening and clamping module and a vacuum module are sequentially driven to sequentially pass through a sealing module and a heat sealing module, and vacuum pumping and heat sealing operation of a packaging bag are automatically carried out; all the modules in the whole heat sealing operation are matched with the Y-axis driving module to conduct staged movement control, so that heat sealing operation can be efficiently conducted, and manual participation is not needed in the whole process.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of packaging bag heat sealing, and particularly relates to an automatic vacuum bag sealing structure and a bag sealing production line. BACKGROUND

[0002] With the deepening of industrial 4.0 and intelligent manufacturing, and the increasing requirement for product cleanliness, many products require timely vacuum packaging after production to avoid oxidation and dust pollution caused by long-term placement in the air. The packaging bag heat sealing technology is a processing technology that uses the melting characteristics of thermoplastic materials to make two or more layers of packaging materials melt and fuse through heating and pressurization, and forms a firm and sealed structure after cooling. It is widely used in food, medicine, daily chemical, electronics and other industries, and is one of the core technologies of soft packaging sealing. The core principle is to heat the heat sealing layer material to the melting temperature range through heat conduction, heat radiation or molecular friction, and realize molecular diffusion and interface fusion under the action of pressure, and form a stable sealing structure after cooling.

[0003] Now the production line integration and compatibility are increasingly high. When the same production line produces products, each heat sealing related equipment works relatively independently, and the heat sealing process connection relies on manual cooperation, thereby causing the overall packaging bag heat sealing efficiency to be relatively low. In addition, the same production line produces multiple products, and the packaging specifications are various. The packaging heat sealing equipment needs to be designed additionally to adapt, and therefore the compatibility of the existing packaging heat sealing equipment needs to be improved.

[0004] Therefore, the present application is proposed. SUMMARY

[0005] The present application provides an automatic vacuum bag sealing structure and a bag sealing production line. Through the driving of the Y-axis driving module, the corresponding bag supporting assembly and vacuum suction nozzle in the supporting and clamping module and the vacuum module are sequentially driven to sequentially pass through the sealing module and the heat sealing module, and the vacuum and heat sealing operation of the packaging bag is automatically performed. The whole heat sealing operation is controlled by the stage movement of each module in cooperation with the Y-axis driving module, so that the heat sealing operation can be efficiently performed without manual participation throughout the process.

[0006] To solve the above technical problems, the basic idea of the technical scheme of the present application is to provide an automatic vacuum bag sealing structure and a bag sealing production line, which comprises a rack; and a sealing module, a heat sealing module, a supporting and clamping module and a vacuum module, which are sequentially and spacedly arranged on the rack. The sealing module and the heat sealing module are respectively used for sealing and heat sealing the bag opening of the packaging bag. The supporting and clamping module at least comprises a bag supporting mechanism for supporting the bag opening by extending into the packaging bag. The vacuum module at least comprises a vacuum suction nozzle for vacuumizing the bag opening by extending into the packaging bag. And the Y-axis driving module, the supporting and clamping module and the vacuum module are arranged on the Y-axis driving module, and the Y-axis driving module can drive the supporting bag assembly and the vacuum nozzle to pass through the sealing module, the heat sealing module and then be separated in sequence.

[0007] Further, the supporting bag mechanism comprises: The supporting bag substrate is arranged transversely on the Y-axis driving module. The supporting bag synchronous belt assembly is arranged on the supporting bag substrate, and the supporting bag synchronous belt assembly at least comprises a supporting bag synchronous belt that can be transmitted along the length direction of the supporting bag substrate. The two supporting bag rods extend forward perpendicularly to the length direction of the supporting bag substrate to form a rod-shaped structure, and in the initial stage, the connecting points of the two supporting bag rods on the supporting bag synchronous belt are symmetrically arranged about the geometric center point of the supporting bag synchronous belt.

[0008] Further, the supporting and clamping module further comprises a clamping mechanism for clamping the two sides of the bag opening of the packaging bag; the clamping mechanism comprises: The clamping substrate is arranged transversely on the Y-axis driving module and located between the supporting bag substrate and the heat sealing module. The clamping synchronous belt assembly at least comprises a clamping synchronous belt that can be transmitted along the length direction of the supporting bag substrate. The two clamping assemblies are symmetrically arranged about the geometric center point of the clamping synchronous belt in the initial stage.

[0009] Further, the clamping assembly at least comprises two clamping blocks that can move towards or away from each other, for clamping the outer side of the bag opening of the packaging bag. Preferably, the opposite side walls of the two clamping blocks are provided with sawtooth grooves that engage with each other.

[0010] Further, the supporting and clamping module further comprises a zero position sensor, wherein, The zero position sensor is arranged at the center position of the front side of the supporting bag substrate for zero position detection when the two supporting bag rods move towards the middle of the supporting bag substrate. The two ends of the clamping substrate are respectively provided with zero position sensors for zero position detection when the two clamping assemblies move away from the two sides of the clamping substrate.

[0011] Further, the vacuum module further comprises, The vacuum pump is arranged on the Y-axis driving module, and the vacuum nozzle is connected to the air suction interface of the vacuum pump, and the extension direction of the vacuum nozzle is the same as the driving direction of the Y-axis driving module.

[0012] Further, at least the part of the vacuum nozzle extending into the packaging bag is flat.

[0013] Furthermore, the sealing module includes two sealing cylinders arranged vertically opposite each other, with a sealing strip connected to the drive end of each sealing cylinder, and the two sealing strips arranged horizontally parallel to each other.

[0014] Furthermore, the heat sealing module includes two heat sealing cylinders arranged vertically opposite each other, and the drive end of the heat sealing cylinders is connected to a heat sealing strip, with the two heat sealing strips arranged horizontally parallel.

[0015] A bag sealing production line includes any of the above-described automatic vacuum bag sealing structures. The bag sealing production line includes a conveying module for conveying the packaging bags to be heat-sealed to the front of the frame.

[0016] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: 1. This invention automates the vacuuming and heat-sealing of packaging bags by sequentially arranging a sealing module, a heat-sealing module, a clamping module, and a vacuum module on the frame. Driven by the Y-axis drive module, the corresponding bag-supporting components and vacuum nozzles in the clamping module and vacuum module are driven sequentially through the sealing module and heat-sealing module. The entire heat-sealing operation is carried out efficiently through the four core modules of sealing module, heat-sealing module, clamping module, and vacuum module, combined with the staged movement control of Y-axis drive module, without the need for manual intervention.

[0017] 2. By setting up a bag-supporting synchronous belt assembly and bag-supporting rods symmetrical about the geometric center point of the bag-supporting synchronous belt, the present invention can precisely control the movement of the two bag-supporting rods as they approach or move away from each other through the bag-supporting synchronous belt, ensuring that the bag-supporting rods can simultaneously extend into the packaging bag and simultaneously complete the support and flattening operation of the packaging bag opening.

[0018] 3. This invention sets up a clamping timing belt assembly and a clamping assembly symmetrical about the geometric center point of the clamping timing belt. By clamping the timing belt, the movement of the two clamping assemblies moving closer or further apart is precisely controlled, ensuring that the clamping assemblies can simultaneously clamp and fix the outside of the packaging bag, thereby ensuring the accuracy of the position when the packaging bag is pulled and moved.

[0019] 4. By setting a zero-position sensor at the center of the front side of the bag-supporting substrate and setting zero-position sensors at both ends of the clamping substrate, the present invention can perform zero-position processing on the components of the bag-supporting mechanism and the clamping mechanism according to different heat-sealing operation stages, thereby avoiding motion interference between the mechanisms during heat-sealing operation.

[0020] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and serve to explain the principles of the application. It will be readily apparent to those skilled in the art that other embodiments of the application can be practiced without departing from the scope of the application. The drawings are as follows: Figure 1 is a schematic view of the right shaft side structure of the vacuum bag sealing structure in the embodiment of the application; Figure 2 is a schematic view of the left shaft side structure of the vacuum bag sealing structure in the embodiment of the application; Figure 3 is a schematic view of the structure of the sealing module in the embodiment of the application; Figure 4 is a schematic view of the structure of the heat sealing module in the embodiment of the application; Figure 5 is a schematic view of the structure of the clamping mechanism in the embodiment of the application; Figure 6 is a schematic view of the structure of the bag supporting mechanism in the embodiment of the application; Figure 7 is a schematic view of the structure of the Y-axis driving module in the embodiment of the application; Main element description in the figure: 1, frame; 2, sealing module; 21, sealing cylinder; 22, sealing strip; 3, heat sealing module; 31, heat sealing cylinder; 32, heat sealing strip; 4, clamping mechanism; 41, clamping base plate; 42, clamping synchronous belt assembly; 43, clamping assembly; 5, bag supporting mechanism; 51, bag supporting base plate; 52, bag supporting synchronous belt assembly; 53, bag supporting rod; 6, Y-axis driving module; 7, vacuum module; 71, vacuum suction nozzle.

[0022] It should be noted that these drawings and written descriptions are not intended to limit the scope of the concept of the application in any way, but to illustrate the concept of the application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the application more clear, the technical scheme in the embodiments will be described clearly and completely below in conjunction with the drawings of the embodiments of the application. The following embodiments are used to illustrate the application, but are not used to limit the scope of the application.

[0024] In the description of the present application, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0025] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] As shown in Figures 1 to 7 The present application embodiment introduces an automatic vacuum bag sealing structure, which comprises a rack 1, a sealing module 2, a heat sealing module 3, a supporting and clamping module and a vacuum module 7, which are sequentially and spacedly arranged on the rack 1; wherein the sealing module 2 and the heat sealing module 3 are respectively used for sealing and heat sealing the bag opening of the packaging bag; the supporting and clamping module at least comprises a bag supporting mechanism 5 for supporting the bag opening by extending into the packaging bag; the vacuum module 7 at least comprises a vacuum suction nozzle 71 for vacuumizing the bag opening by extending into the packaging bag. And a Y-axis driving module 6, the supporting and clamping module and the vacuum module 7 are arranged on the Y-axis driving module 6, and the Y-axis driving module 6 can drive the bag supporting assembly and the vacuum suction nozzle 71 to sequentially pass through the sealing module 2, the heat sealing module 3 and then be separated. In the present application, the rack 1 is at least spliced by the upper and lower mounting plates arranged oppositely and the support plates arranged symmetrically to form a frame structure. Among them, the front side of the rack 1 faces the operator, thereby defining the front-back direction of the rack 1. The sealing module 2, the heat sealing module 3, the supporting and clamping module and the vacuum module 7 are sequentially and spacedly arranged on the upper and lower mounting plates of the rack 1 in the front-back direction, and the four modules are the core components of the heat sealing operation. Specifically, the supporting and clamping module and the vacuum module 7 are integrally arranged on the Y-axis driving module 6. It should be noted that the direction of the Y-axis is consistent with the front-back direction of the aforementioned rack 1.

[0027] In addition, the Y-axis driving module 6 at least comprises a driving cylinder, the driving end of which is connected with the supporting and clamping module and the vacuum module 7, so that the Y-axis driving module 6 can drive the supporting and clamping module and the vacuum module 7 to move synchronously.

[0028]

[0029] ​During the movement of the Y-axis driving module 6, the supporting and clamping module and the corresponding bag supporting assembly and vacuum nozzle 71 in the vacuum module 7 are sequentially driven to pass through the sealing module 2 and the heat sealing module 3, so that the bag opening of the packaging bag is gradually pulled to the lower side of the sealing module 2 for sealing, then to the lower side of the heat sealing module 3, and the vacuum nozzle 71 performs vacuumizing operation, and finally the bag supporting assembly and the vacuum nozzle 71 are synchronized with the bag opening of the packaging bag, and then the heat sealing module 3 performs heat sealing operation on the bag opening of the packaging bag, and after the heat sealing operation is completed, the product is transferred to the next process.

[0030] During the whole heat sealing operation, the sealing module 2, the heat sealing module 3, the supporting and clamping module and the vacuum module 7 cooperate with the stage movement control of the Y-axis driving module 6, so that the heat sealing operation can be efficiently performed, and the whole process does not need manual participation.

[0031] Further, the bag supporting mechanism 5 comprises: The bag supporting base plate 51 is transversely arranged on the Y-axis driving module 6; The bag supporting synchronous belt assembly 52 is arranged on the bag supporting base plate 51, and the bag supporting synchronous belt assembly 52 at least comprises a bag supporting synchronous belt which can be transmitted along the length direction of the bag supporting base plate 51; The two bag supporting rods 53 extend forward perpendicularly to the length direction of the bag supporting base plate 51 to form a rod-shaped structure, and in the initial stage, the connection points of the two bag supporting rods 53 on the bag supporting synchronous belt are symmetrically arranged about the geometric center point of the bag supporting synchronous belt.

[0032] In the present application, the bag supporting base plate 51 is arranged on the Y-axis driving module 6 and perpendicular to the movement direction of the Y-axis driving module 6, and the bag supporting synchronous belt assembly 52 is arranged on the upper side of the base plate. Specifically, the bag supporting synchronous belt assembly 52 comprises bag supporting synchronous belt wheels which are symmetrically arranged left and right, and the two bag supporting synchronous belt wheels are connected by the bag supporting synchronous belt. The mounting block is fixedly connected on the bag supporting synchronous belt, and the mounting block is fixed by bolts or other fasteners. The two bag supporting rods 53 are fixedly connected on the mounting block, and the two bag supporting rods 53 both extend forward by a distance to form a rod-shaped structure with a certain length. The upper and lower sides of the bag supporting rod 53 are horizontal planes, and the whole is arranged in a flat shape. The connection points of the two bag supporting rods 53 on the bag supporting synchronous belt are symmetrically arranged about the geometric center point of the rectangular region surrounded by the bag supporting synchronous belt. One of the synchronous belt wheels is connected with a driving motor, and under the driving of the driving motor, the bag supporting rods 53 on the bag supporting synchronous belt can move close to or away from each other. Then the bag supporting rods 53 on the bag supporting mechanism 5 can be adaptively adjusted according to the size of the bag opening of the packaging bag, and in the bag supporting process, the bag supporting rods 53 can timely extend into the packaging bag and support and flatten the inner side of the bag opening of the packaging bag.

[0033] Further, the supporting and clamping module further comprises a clamping mechanism 4 for clamping the two sides of the bag opening of the packaging bag; the clamping mechanism 4 comprises: The clamping base plate 41 is transversely arranged on the Y-axis driving module 6 and is located between the bag supporting base plate 51 and the heat sealing module 3. The clamping synchronous belt assembly 42 at least comprises a clamping synchronous belt which can be transmitted along the length direction of the bag supporting base plate 51. The two clamping assemblies 43 are symmetrically arranged about the geometric center point of the clamping synchronous belt at the connecting points of the clamping synchronous belt in the initial stage.

[0034] In the present application, the clamping mechanism 4 is arranged in space between the bag supporting mechanism 5 and the heat sealing module 3. The clamping base plate 41 is substantially consistent in height with the bag supporting base plate 51 and is arranged in parallel with the bag supporting base plate 51. Similarly, the clamping synchronous belt wheels are arranged on the left and right sides of the upper surface of the clamping base plate 41. The clamping synchronous belt is wound around the two clamping synchronous belt wheels so that the two clamping synchronous belt wheels are driven. One of the clamping synchronous belt wheels is connected with a driving motor. In addition, the mounting block is fixedly connected to the clamping synchronous belt in the same way as the bag supporting mechanism 5. The mounting block is fixed by bolts or other fasteners. The clamping assemblies 43 are fixedly connected to the mounting block. The two clamping assemblies 43 are symmetrically arranged about the geometric center point of the clamping synchronous belt at the connecting points of the clamping synchronous belt. When the clamping synchronous belt wheels rotate, the clamping synchronous belt can drive the clamping assemblies 43 connected thereto to move closer or farther apart. Before the bag supporting rods 53 in the bag supporting mechanism 5 extend into the opening of the packaging bag and move to the two sides to support and flatten the opening of the packaging bag, the distance between the two clamping assemblies 43 is adjusted so that the outer side of the opening of the packaging bag is clamped on the outside by the clamping assemblies 43. The cooperation of the clamping mechanism 4 and the bag supporting mechanism 5 can effectively flatten and clamp the opening of the packaging bag, which facilitates the movement of the packaging bag to the corresponding work station driven by the Y-axis driving mechanism.

[0035] It should be noted that the two bag supporting rods 53 of the bag supporting mechanism 5 move closer to the center to realize the zero operation, and the two clamping assemblies 43 of the clamping mechanism 4 move farther apart to the two sides to realize the zero operation.

[0036] Further, the clamping assembly 43 at least comprises two clamping blocks which can move towards or away from each other, for clamping the outer side of the opening of the packaging bag. Preferably, the opposite side walls of the two clamping blocks are provided with interlocking sawtooth grooves.

[0037] In the present application, the clamping assembly 43 is fixedly connected to the mounting block arranged on the clamping synchronous belt by fasteners such as bolts, the clamping assembly 43 includes two clamping blocks that can move up and down and are driven by a clamping cylinder, so that after the bag supporting rod 53 extends into the packaging bag, the two clamping blocks are driven by the clamping cylinder to clamp and fix the packaging bag on the outside, thereby preparing for the subsequent operation of more stably pulling the packaging bag to move.

[0038] A plurality of sawtooth grooves recessed away from each other are arranged on the opposite sides of the two clamping blocks, and the grooves are staggered. When the two clamping blocks move close to each other, the sawtooth grooves can be engaged, thereby ensuring that the packaging bag can be clamped firmly on the outside, increasing the friction of clamping, and preventing slipping.

[0039] Further, the bag supporting module further comprises a zero position sensor, wherein, A zero position sensor is arranged at the center position of the front side of the bag supporting base plate 51 for zero position detection when the two bag supporting rods 53 move close to the middle of the bag supporting base plate 51; Zero position sensors are arranged at both ends of the clamping base plate 41 for zero position detection when the two clamping assemblies 43 move away from both sides of the clamping base plate 41.

[0040] In the present application, according to the above, the bag supporting mechanism 5 and the clamping mechanism 4 need to be zeroed in the initial stage to avoid movement interference of the two mechanisms during heat sealing operation, and to ensure effective action of the bag supporting mechanism 5 and the clamping mechanism 4 for corresponding supporting and clamping.

[0041] For the bag supporting mechanism 5, since the vacuum suction nozzle 71 needs to extend into the packaging bag during initial operation, the zero position is arranged at the center position of the front side of the bag supporting base plate 51, and a zero position sensor is arranged at the position. The two bag supporting rods 53 are driven to move close to the middle by the bag supporting synchronous belt assembly 52, and the zero position sensor detects the zero return signal.

[0042] For the clamping mechanism 4, since the bag supporting rod 53 needs to clamp the outside of the packaging bag from both sides after extending into the packaging bag during initial operation, the zero position is arranged at both sides of the front surface of the clamping base plate 41, and a zero position sensor is also arranged at the position. When the two clamping assemblies 43 are driven to move to both sides by the clamping synchronous belt assembly 42, the zero position sensor detects the zero return signal. Preferably, since the two clamping assemblies 43 on the clamping synchronous belt are symmetrically arranged relative to the geometric center point of the clamping synchronous belt, the movement of the two clamping assemblies 43 is synchronized, so that the zero position sensor can be arranged at any one of the zero position positions on the clamping base plate 41.

[0043] Further, the vacuum module 7 further comprises, A vacuum pump is arranged on the Y-axis driving module 6, and a vacuum suction nozzle 71 is connected to the air suction interface of the vacuum pump, and the extension direction of the vacuum suction nozzle 71 is the same as the driving direction of the Y-axis driving module 6.

[0044] In the present application, the Y-axis driving module 6 is provided with a mounting block at the driving end to provide a mounting base for the supporting and clamping module and the vacuum module 7. In the front and rear directions, the vacuum module 7 is arranged behind the supporting bag module. The vacuum module 7 provides a power source for vacuumizing through the vacuum pump, and the vacuum suction nozzle 71 is connected to the air suction interface of the vacuum pump. The vacuum suction nozzle 71 extends forward by a distance to form a tubular structure with a certain length. The vacuum suction nozzle 71 is consistent in height with the supporting bag rods 53 and is arranged forward and parallel. The vacuum suction nozzle 71 is in the middle position, and the two supporting bag rods 53 are symmetrically arranged relative to the vacuum suction nozzle 71. In the initial stage, the supporting bag rods 53 are driven to approach the vacuum suction nozzle 71 through the supporting bag synchronous belt assembly 52, and the two are moved into the packaging bag through the Y-axis driving module 6.

[0045] Further, at least the part of the vacuum suction nozzle 71 extending into the packaging bag is flat.

[0046] In the present application, the part of the vacuum suction nozzle 71 extending into the packaging bag is flat, that is, the upper and lower surfaces are horizontal planes, and the overall contour is the same as that of the supporting bag rod 53. Therefore, after the vacuum suction nozzle 71 and the two supporting bag rods 53 extend into the packaging bag, there is no height difference in the ups and downs, so that the opening size of the bag opening at each position of the packaging bag is basically consistent, ensuring the normal and effective performance of the subsequent clamping operation and vacuumizing operation.

[0047] Further, the sealing module 2 comprises two sealing cylinders 21 arranged opposite to each other, and the driving end of the sealing cylinder 21 is connected with a sealing strip 22, and the two sealing strips 22 are arranged transversely and parallel to each other.

[0048] In the present application, at least one sealing cylinder 21 is arranged on the mounting plate above and below the rack 1, and the driving directions of the two cylinders are arranged opposite to each other. The driving end of the two sealing cylinders 21 is connected with a sealing strip 22, and the two sealing strips 22 are arranged transversely and parallel to each other. Under the driving of the sealing cylinder 21, the two sealing strips 22 can move close to or away from each other. During the heat sealing operation, the packaging bag needs to be pulled through the sealing module 2 by the supporting bag module, and the sealing strip 22 is driven by the sealing cylinder 21 to perform the sealing operation on the bag opening of the packaging bag. It should be noted that although the sealing strip 22 presses the bag opening of the packaging bag, under the driving of the Y-axis driving module 6, the packaging bag can move backward relative to the sealing strip 22 under the action of the supporting and clamping module.

[0049] The sealing strip 22 is pressed down in the initial stage, and at the same time, the bag supporting rod 53 and the vacuum suction nozzle 71 are also pressed, so the thickness of the bag supporting rod 53 and the vacuum suction nozzle 71 is as small as possible, so that the sealing strip 22 does not deform greatly when the bag supporting rod 53 and the vacuum suction nozzle 71 are pressed, thereby prolonging the service life of the sealing strip 22.

[0050] Further, the heat sealing module 3 comprises two heat sealing cylinders 31 arranged oppositely, and the driving end of the heat sealing cylinder 31 is connected with a heat sealing strip 32, and the two heat sealing strips 32 are arranged transversely and parallelly.

[0051] In the present application, at least one heat sealing cylinder 31 is arranged on each of the upper and lower mounting plates of the rack 1, and the driving end of the heat sealing cylinder 31 is connected with two heat sealing strips 32 arranged transversely and parallelly. The opposite surfaces of the two heat sealing strips 32 completely coincide in the up-down direction. After the sealing module 2 works, the bag supporting module, the vacuum module 7 and the packaging bag are moved backward to the heat sealing module 3 (the position where the packaging bag needs to be heat sealed) by the Y-axis driving module 6, at this time, the vacuumizing operation is first carried out by the vacuum module 7, when the preset vacuumizing time arrives, the clamping mechanism 4 releases the packaging bag and returns to zero, so that the packaging bag does not move backward with the continuous driving of the Y-axis driving module 6 due to the loss of certain clamping force, and the bag supporting module and the vacuum module 7 move backward and gradually separate from the heat sealing module 3 to a safe position. The vacuum module 7 stops the vacuumizing operation, at this time, the heat sealing strip 32 of the heat sealing module 3 works, so that the packaging bag can be sealed by using high-temperature melting within a predetermined time, and the whole vacuum heat sealing work is completed.

[0052] The present application also discloses a bag sealing production line, which has the automatic vacuum bag sealing structure of any of the above-mentioned embodiments, and the bag sealing production line comprises a conveying module for conveying the packaging bag to be heat sealed to the front side of the rack 1.

[0053] The conveying module is arranged in the bag sealing production line, and the conveying module at least comprises a conveying belt assembly, which can convey the packaging bag of the product to be heat sealed to the front side of the vacuum bag sealing structure to perform the corresponding vacuum heat sealing operation, and when the vacuum heat sealing process is completed, the vacuum heat sealed packaging of the product can be conveyed to the next process by the conveying belt assembly, and the vacuum heat sealing work of the next product is simultaneously performed.

[0054] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed with the preferred embodiments as above, it is not intended to limit the present application, and any skilled person in the art can make some changes or modifications to the above-mentioned technical content with slight changes or equivalent embodiments without departing from the technical solution of the present application. The embodiments in the above examples can be further combined or replaced, as long as they do not deviate from the technical solution of the present application. Any simple modification, equivalent change and modification made to the above examples according to the technical essence of the present application still belong to the scope of the present application.

Claims

1. An automatic vacuum sealing bag structure, characterized in that, include, frame; The unit includes a sealing module, a heat sealing module, a clamping module, and a vacuum module, which are arranged sequentially and spaced apart on the frame. The sealing module and the heat sealing module are used to seal and heat seal the opening of the packaging bag, respectively. The clamping module includes at least a bag-supporting mechanism for extending into the packaging bag to support the opening. The vacuum module includes at least a vacuum nozzle for extending into the packaging bag to evacuate the opening. The Y-axis drive module, the support clamp module, and the vacuum module are mounted on the Y-axis drive module. The Y-axis drive module can drive the bag support assembly and the vacuum nozzle to pass through the sealing module and the heat sealing module in sequence until they detach.

2. The automatic vacuum sealing bag structure according to claim 1, characterized in that: The bag-supporting mechanism includes; The support base plate is horizontally positioned on the Y-axis drive module; A bag-supporting timing belt assembly is disposed on a bag-supporting substrate, and the bag-supporting timing belt assembly includes at least a bag-supporting timing belt that can be conveyed along the length direction of the bag-supporting substrate; Two support rods extend forward perpendicular to the length of the support base plate, forming a rod-shaped structure. In the initial stage, the connection points of the two support rods on the support timing belt are symmetrically arranged about the geometric center point of the support timing belt.

3. The automatic vacuum sealing bag structure according to claim 2, characterized in that: The clamping module also includes a clamping mechanism for clamping both sides of the bag opening; the clamping mechanism includes: The clamping substrate is horizontally positioned on the Y-axis drive module, located between the bag support substrate and the heat sealing module; A timing belt clamping assembly, comprising at least a timing belt that can be conveyed along the length of the support substrate; In the initial stage, the connection points of the two clamping assemblies on the clamping timing belt are symmetrically set about the geometric center point of the clamping timing belt.

4. The automatic vacuum sealing bag structure according to claim 3, characterized in that: The clamping assembly includes at least two clamping blocks that can move up and down towards each other or away from each other, for clamping the outside of the opening of the packaging bag; Preferably, the two clamping blocks have interlocking serrated grooves on their opposite sidewalls.

5. The automatic vacuum sealing bag structure according to claim 3, characterized in that: The support clamp module also includes a zero-position sensor, wherein, A zero-position sensor is installed at the center of the front side of the bag support base plate to detect the zero position when the two bag support rods move toward the middle of the bag support base plate. Zero-position sensors are provided at both ends of the clamping substrate to detect zero position when the two clamping components move away from the sides of the clamping substrate.

6. An automatic vacuum sealing bag structure according to any one of claims 1-5, characterized in that: The vacuum module also includes, A vacuum pump is mounted on the Y-axis drive module. A vacuum nozzle is connected to the pump's suction port, and the extension direction of the vacuum nozzle is the same as the driving direction of the Y-axis drive module.

7. The automatic vacuum sealing bag structure according to claim 6, characterized in that: The portion of the vacuum nozzle that extends into the packaging bag is flat.

8. The automatic vacuum sealing bag structure according to claim 7, characterized in that: The sealing module includes two sealing cylinders arranged vertically opposite each other. The driving end of the sealing cylinders is connected to a sealing strip, and the two sealing strips are arranged horizontally and parallel to each other.

9. An automatic vacuum sealing bag structure according to claim 8, characterized in that: The heat sealing module includes two heat sealing cylinders arranged vertically opposite each other. The drive end of the heat sealing cylinders is connected to a heat sealing strip, and the two heat sealing strips are arranged horizontally and parallel to each other.

10. A bag sealing production line, characterized in that: The automatic vacuum sealing bag structure according to any one of claims 1-9 includes a conveying module on the sealing bag production line for conveying the packaging bag to be heat-sealed to the front of the frame.

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