Vacuum packaging machine with head-giving transfer device

Abstract

The invention relates to the field of packaging equipment, and discloses a vacuum packaging machine with a head-giving transfer device, comprising a primary vacuum sealing turntable and a secondary sealing device, wherein the secondary sealing device breaks the primary sealing position and performs secondary sealing processing; the invention also comprises a conveying mechanism, which is arranged at the connecting position between the secondary sealing device and the primary vacuum sealing turntable, and is used for receiving the packaging bag after the primary sealing, and conveying the packaging bag to at least the secondary sealing device; the conveying mechanism comprises a swing arm, on which a transfer device is arranged, and the transfer device comprises an inner movable plate and an outer matching plate, wherein the movable plate and the matching plate are arranged opposite to each other and are used for clamping or releasing the packaging bag, and a connecting rod 1 and a connecting rod 2 drive the movable plate connected with a connecting rod 3 to move in a plane parallel to the swing of the swing arm; the invention cooperates with clamping and packaging bags through the structure, thereby forming a bag body that can avoid the head while not causing vertical friction with the packaging bag and damaging the bag body.

Description

Technical Field

[0001] The invention relates to the field of packaging equipment, in particular to a vacuum packaging machine with a sealing head giving way and transferring device. Background Art

[0002] At present, many food packaging has been vacuum packed. Vacuum packed food can greatly improve the shelf life. Vacuum packaging is completed by vacuuming the unsealed package in the vacuum chamber and then sealing it. At present, the market mostly uses turntable vacuum packaging machines for food vacuum packaging. The turntable vacuum packaging machine is generally composed of a turntable and multiple vacuum chambers arranged on the circumference of the turntable. When working, the indexing rotation of the turntable drives all vacuum chambers to rotate synchronously. During the indexing rotation of the turntable, each vacuum chamber completes the actions of bagging, closing, vacuuming, heat sealing, cooling, exhausting and then opening the cover of the vacuum chamber. Generally speaking, there will be a device for taking the packaging bag out of the bag bin and then adding materials in the previous section. Generally speaking, this device is also equipped on a turntable. This turntable can also be equipped with a pre-sealing device that reduces the bag opening to facilitate subsequent vacuuming. After vacuuming and heat sealing are completed, the packaged packaging bag is sent out through the output device.

[0003] The problem with the prior art is that when materials are added, tiny particles are easily left at the bag mouth. Such particles may be solid, such as spice particles dropped on food, or liquid, such as oil. These tiny particles are between the two sealed surfaces of the vacuum packaging, causing the packaging bag to appear to be vacuum sealed, but in fact the seal has a certain gap, resulting in the generation of waste vacuum seals. Such waste is difficult to detect and will lead to vacuum failure and deterioration of the internal materials after a period of time.

[0004] Due to the above-mentioned problems, the present invention adopts a newly added secondary sealing device, which creates a new problem. First, the prior art does not have a conveying mechanism for transferring the sealed packaging bags to the second sealing turntable. Even if there is a mechanism with a similar structure, it is a bag-loading mechanism before the first sealing. Its structure is that the fixed machine clamp is fixed on the crossbeam plate and is located on the inner side, and the movable machine clamp is fixed on the rotating shaft through the mounting plate and is located on the outer side. Since the inner fixed machine clamp is on one side of the first sealing turntable, there is no risk of collision with the sealing turntable due to clamping, and when the rotating shaft rotates, the movable machine clamp makes a fan-shaped back and forth swing relative to the fixed machine clamp. For transferring the bags out, there is not enough space for the movable machine clamp to swing to clamp or loosen the packaging bags. Summary of the invention

[0005] Aiming at the shortcomings of the prior art, the present invention provides a vacuum packaging machine with a sealing head giving way transfer device.

[0006] In order to solve the above technical problems, the present invention is solved by the following technical solutions:

[0007] The vacuum packaging machine with a sealing head giving way and transferring device comprises a primary vacuum sealing turntable, which is provided with a plurality of vacuum chambers in its circumference, and the primary vacuum sealing turntable drives the packaging bag containing the material to be conveyed in a rotating manner while sealing the packaging bag once in the vacuum chamber, and the vacuum chamber is provided with a sealing head at least on the inner side; it also comprises a secondary sealing device, which is connected with one side of the primary vacuum sealing turntable for conveying, and the secondary sealing device breaks the primary sealing position and performs secondary sealing treatment; it also comprises a conveying mechanism, which is provided at the connecting position between the secondary sealing device and the primary vacuum sealing turntable, and is used for receiving the packaging bag after the primary sealing, and conveying the packaging bag to at least the secondary sealing device; the conveying mechanism comprises a swing arm, and the transfer device is provided on the swing arm, and the transfer device comprises an inner movable plate and an outer movable plate. The matching plate on the side also includes a mounting seat, a connecting rod 1, a connecting rod 2 and a connecting rod 3. The movable plate and the matching plate are arranged opposite to each other for clamping or releasing the packaging bag. The two ends of the connecting rod 3 are respectively connected to the mounting seat through the connecting rod 1 and the connecting rod 2. The connecting rod 1 and the connecting rod 2 are parallel to each other and are rotatably connected to the mounting seat respectively. At least one of the connecting rod 1 and the connecting rod 2 is connected to a rotating power source that drives the swing thereof. The movable plate is connected to the connecting rod 3. The connecting rod 1 and the connecting rod 2 drive the movable plate connected to the connecting rod 3 to move in a plane parallel to the swing of the swing arm; the swing arm swings back and forth to drive the movable plate to approach or move away from the packaging bag, and the connecting rod 3 drives the movable plate to move at the same time. Before the movable plate clamps the packaging bag in cooperation with the matching plate, the movable plate has at least a stroke from top to bottom that nearly vertically avoids the packaging bag and extends between the inner side of the packaging bag and the head. The movable plate always forms a avoidance with the head during the movement. The movable plate has a first state in which it is located above the space between the inner side of the packaging bag and the sealing head, a second state in which it vertically enters the space between the inner side of the packaging bag and the sealing head, and a third state in which it moves outward to clamp the packaging bag with the matching plate through the packaging bag. The coordinated work of the swing arm and the transfer device realizes the clamping and releasing of the packaging bag at a precise position, ensuring the stability and reliability of the packaging bag during the transfer process. Since the swing plane of the swing arm is parallel to the plane formed by the connecting rod group to drive the movable plate, the drives of the two can be coordinated with each other to achieve the clamping action while achieving the swing displacement.

[0008] Preferably, two groups of connecting rods 1, 2 and 3 are arranged on the left and right sides, and the two groups of connecting rods on the left and right sides move synchronously. The movable plate has an extension part extending upward, and the extension part is used to avoid the matching plate. The extension part is connected to the connecting rods 3 on both sides at the same time, and the connecting rods 3 on both sides are kept above the matching plate when moving. Through the optimized design of connecting rods 1, 2 and 3, the precise movement control of the movable plate is realized, and the flexibility of the packaging bag transfer is improved.

[0009] Preferably, the matching plate is also mounted on the mounting seat, and the mounting seat is connected to the swing arm through a transmission block, one end of the transmission block is fixedly connected to the swing arm, and one end of the transmission block is rotatably connected to the mounting seat.

[0010] Preferably, it also includes a crank, which is arranged parallel to the swing arm, and the end of the crank is hinged to the mounting seat or the matching plate.

[0011] Preferably, the vacuum chamber is formed by inner and outer joint plates, wherein the outer joint plate is connected to a flipping power source, and the outer joint plate is flipped up relative to the inner joint plate through a hinge to open the vacuum chamber or closed inward with the inner joint plate to form a vacuum chamber, and the head is installed on the inner wall of the joint plate.

[0012] Preferably, the secondary sealing device includes a left sealing head and a right sealing head, at least one side of which is provided with an ultrasonic generator, which is connected to the left sealing head or the right sealing head or is provided with a vibration head for breaking the packaging bag, and at least one of the left sealing head and the right sealing head is connected with a translational force source for driving the two to move relative to or opposite to each other. With the use of the ultrasonic generator, efficient secondary sealing of the packaging bag is achieved, and the sealing performance of the packaging is enhanced.

[0013] Preferably, the left sealing head and the right sealing head are respectively arranged on the left mounting seat and the right mounting seat, the left mounting seat is transmission connected to the first slider, and the right mounting seat is transmission connected to the second slider, and also includes a driving block connected to the output end of the translational power source, and the first slider and the second slider are transmission connected to the driving block respectively.

[0014] Preferably, the first slider, the driving block and the second slider are arranged in sequence from left to right, the driving block and the second slider move in the same direction in the left-right direction, and the driving block and the first slider move in opposite directions in the left-right direction. A rotatable rocker arm is installed on the driving block, and both ends of the rocker arm are respectively connected to the first slider and the second slider through a folding rod, the two ends of the folding rod on the left are respectively hinged to the first slider and the rocker arm, and the two ends of the folding rod on the right are respectively hinged to the rocker arm and the second slider, and a guide rod for horizontally guiding the first slider, the driving block and the second slider is also provided, and the first slider, the driving block and the second slider are passed through the guide rod.

[0015] Preferably, the first slider and the second slider are respectively located on the left and right sides of the driving block, the first slider is linked to the right mounting seat through a connecting rod, and the second slider is located above the left mounting seat and connected to the left mounting seat.

[0016] Preferably, a bag loading device and a feeding device for adding materials to the packaging bag are provided on one side of the primary vacuum sealing turntable, and the bag loading device and the feeding device are arranged on another turntable; an output device for receiving the packaging bag after the secondary sealing process is provided on one side of the turntable where the secondary sealing device is located.

[0017] The present invention has significant technical effects due to the adoption of the above technical scheme: through the secondary sealing device, the packaging bag that has been filled with materials and has undergone vacuum sealing processing is processed, the tiny particles between the seals are processed, and the packaging bag is further sealed by a secondary crushing and sealing vacuum packaging machine, so that the finished packaging bag is completely sealed and will not be affected by the falling tiny particles, thereby improving the quality of vacuum packaging, greatly reducing the scrap rate of packaging, and further improving the safety of products, especially the safety of food packaging.

[0018] A conveying mechanism is arranged at the connection position between the secondary sealing device and the primary vacuum sealing turntable. When taking out the packaging bag from the vacuum chamber, the conveying mechanism uses a swing arm to realize the transfer between the secondary sealing device and the primary vacuum sealing turntable. The movable plate and the matching plate are matched to clamp and package the bag through connecting rods 1, 2 and 3, so that the movable plate is inserted into the position between the inner side of the packaging bag and the sealing head in an arc line close to the vertical state, thereby avoiding the sealing head and not causing vertical friction with the packaging bag to damage the bag body.

[0019] Through a series of technical innovations and optimized designs, the vacuum packaging machine has achieved efficient, stable and reliable operation. The sealing quality and production efficiency of the packaging bag have been improved through the cooperation of the primary vacuum sealing turntable and the secondary sealing device, as well as the application of the conveying mechanism and the swing arm transfer device. The implementation of these technical solutions not only improves the packaging quality, but also meets the needs of the modern food packaging industry for high efficiency and high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention.

[0021] Figure 2 yes Figure 1 A partial enlarged view of middle A.

[0022] Figure 3 It is a top view of the present invention.

[0023] Figure 4 yes Figure 3 A partial enlarged view of B.

[0024] Figure 5 It is a structural diagram of the swing arm part of the conveying mechanism.

[0025] Figure 6 yes Figure 5 Schematic diagram of the structure from another angle.

[0026] Figure 7 It is a structural schematic diagram of the conveying mechanism transfer device.

[0027] Figure 8 yes Figure 7Schematic diagram of the structure from another angle.

[0028] Fig. 9 It is a structural schematic diagram of the secondary sealing device.

[0029] The names of the parts indicated by the numerical labels in the above drawings are as follows: Among them, 1. primary vacuum sealing turntable; 11. vacuum chamber; 12. bagging device; 13. feeding device; 14. sealing head; 15. closing plate; 16. hinge; 2. secondary sealing device; 21. left sealing head; 22. right sealing head; 23. ultrasonic generating device; 24. translational power source; 25. left mounting seat; 26. right mounting seat; 27. first slider; 28. second slider; 29. ​​driving block; 291. rocker rod; 292. folding rod; 293. guide rod; 3. conveying mechanism; 31. swing arm; 32. movable plate; 321. extension part; 33. matching plate; 34. mounting seat; 341. transmission block; 35. connecting rod one; 36. connecting rod two; 37. connecting rod three; 38. rotational power source; 39. crank; 4. output device. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0031] Example 1

[0032] Vacuum packaging machine with head-giving transfer device, such as Figure 1-4As shown, it includes a primary vacuum sealing turntable 1, which is circumferentially provided with a plurality of vacuum chambers 11. The primary vacuum sealing turntable 1 drives the packaging bag containing the material to be conveyed in a rotating manner while sealing the packaging bag once in the vacuum chamber 11. The vacuum chamber 11 is provided with a sealing head 14 at least on the inner side; it also includes a secondary sealing device 2, which is connected to one side of the primary vacuum sealing turntable 1 for conveying, and the secondary sealing device 2 breaks the primary sealing position and performs secondary sealing processing; it also includes a conveying mechanism 3, which is provided at the connecting position of the secondary sealing device 2 and the primary vacuum sealing turntable 1, and the conveying mechanism 3 is used to receive the packaging bag after the primary sealing, and convey the packaging bag to at least the secondary sealing device 2; the conveying mechanism 3 includes a swing arm 31, and a transfer device is provided on the swing arm 31, and the transfer device includes an inner movable plate 32 and an outer matching plate 33, and also includes a mounting seat 34, a connecting rod 35, and a connecting rod 36. The movable plate 32 and the matching plate 33 are arranged opposite to each other for clamping or loosening the packaging bag. The two ends of the connecting rod 37 are connected to the mounting seat 34 through the connecting rod 1 35 and the connecting rod 2 36 respectively. The connecting rod 1 35 and the connecting rod 2 36 are parallel to each other and are rotatably connected to the mounting seat 34 respectively. At least one of the connecting rod 1 35 and the connecting rod 2 36 is connected to the rotating power source 38 that drives it to swing. The movable plate 32 is connected to the connecting rod 37, and the connecting rod 1 35 and the connecting rod 2 36 drive the rotating power source 38 to swing. The movable plate 32 connected by the connecting rod 37 moves in a plane parallel to the swing of the swing arm 31; the swing arm 31 swings back and forth to drive the movable plate 32 to approach or move away from the packaging bag, and the connecting rod 37 drives the movable plate 32 to move at the same time. Before the movable plate 32 cooperates with the matching plate 33 to clamp the packaging bag, the movable plate 32 has at least a stroke from top to bottom to avoid the packaging bag and extend vertically toward the inside of the packaging bag and the head. The movable plate 32 always avoids the head 14 during the movement. The power source of the swing arm can be a conventional driving device in the field such as a motor or a cylinder, as long as the swing arm can swing back and forth in an arc. Among them, the movable plate 32 has a first state located above the space between the inside of the packaging bag and the head 14, a second state vertically entering the space between the inside of the packaging bag and the head 14, and a third state moving outward to cooperate with the matching plate 33 to clamp the packaging bag across the packaging bag.

[0033] The matching plate 33 can be fixed or movable. The matching plate 33 can share a power source with the movable plate 32 and realize linkage by using a connecting rod or other structure. Alternatively, a separate power source can be provided to realize reverse movement with the movable plate 32.

[0034] like Figure 7-8As shown, two groups of connecting rods 1 35, 2 36 and 37 are arranged on the left and right, and the two groups of connecting rods move synchronously. The movable plate 32 has an extension portion 321 extending upward, and the extension portion 321 is used to avoid the matching plate 33. The extension portion 321 is connected to the connecting rod 3 37 on both sides at the same time, and the connecting rod 3 37 on both sides remains above the matching plate 33 when moving.

[0035] The matching plate 33 is also mounted on the mounting seat 34 , and the mounting seat 34 is connected to the swing arm 31 through a transmission block 341 , one end of the transmission block 341 is fixedly connected to the swing arm 31 , and one end of the transmission block 341 is rotatably connected to the mounting seat 34 .

[0036] like Figure 5-6 As shown, it also includes a crank 39 , which is arranged parallel to the swing arm 31 , and the end of the crank 39 is hinged to the mounting seat 34 or the matching plate 33 .

[0037] The vacuum chamber 11 is formed by inner and outer panels 15 , wherein the outer panel 15 is connected to a flipping power source, and the outer panel 15 is flipped up relative to the inner panel 15 via a hinge 16 to open the vacuum chamber 11 or is closed inward with the inner panel 15 to form the vacuum chamber 11 , and the sealing head 14 is installed on the inner wall of the panel 15 .

[0038] The secondary sealing device 2 includes a left sealing head 21 and a right sealing head 22. An ultrasonic generating device 23 is provided on at least one side of the left sealing head 21 and the right sealing head 22. The ultrasonic generating device 23 is connected to the left sealing head 21 or the right sealing head 22 or a vibration head is provided separately for breaking the packaging bag. At least one of the left sealing head 21 and the right sealing head 22 is connected to a translational force source 24 that drives the two to move relative to or opposite to each other.

[0039] like Fig. 9 As shown, the left sealing head 21 and the right sealing head 22 are respectively arranged on the left mounting seat 25 and the right mounting seat 26, the left mounting seat 25 is transmission connected to the first slider 27, and the right mounting seat 26 is transmission connected to the second slider 28. It also includes a driving block 29 connected to the output end of the translational force source 24, and the first slider 27 and the second slider 28 are transmission connected to the driving block 29 respectively.

[0040] The first slider 27, the driving block 29, and the second slider 28 are arranged in sequence from left to right. The driving block 29 and the second slider 28 move in the same direction in the left-right direction, and the driving block 29 and the first slider 27 move in opposite directions in the left-right direction. A rotatable rocker bar 291 is installed on the driving block 29. The two ends of the rocker bar 291 are respectively connected to the first slider 27 and the second slider 28 through a folding rod 292. The two ends of the folding rod 292 on the left are respectively hinged to the first slider 27 and the rocker bar 291, and the two ends of the folding rod 292 on the right are respectively hinged to the rocker bar 291 and the second slider 28. A guide rod 293 is also provided for horizontally guiding the first slider 27, the driving block 29, and the second slider 28. The first slider 27, the driving block 29, and the second slider 28 are penetrated by the guide rod 293.

[0041] The first slider 27 and the second slider 28 are respectively located on the left and right sides of the driving block 29. The first slider 27 is linked to the right mounting seat 26 through the connecting rod 294. The second slider 28 is located above the left mounting seat 25 and is connected to the left mounting seat 25. The first slider, the driving block, and the second slider can be provided separately, or a linked sliding can be provided on the guide rod 293 to realize transmission.

[0042] A bag loading device 12 and a feeding device 13 for adding materials to the packaging bag are arranged on one side of the primary vacuum sealing turntable 1, and the bag loading device 12 and the feeding device 13 are arranged on another turntable; an output device 4 for receiving the packaging bag after the secondary sealing process is arranged on one side of the secondary sealing device 2.

[0043] The secondary sealing device 2 may or may not be arranged on the turntable. As one embodiment, the secondary sealing device 2 is arranged on the turntable, and the conveying mechanism 3 includes the turntable where the secondary sealing device 2 is located and the swing arm 31. The swing arm 31 and the turntable where the secondary sealing device 2 are located are provided with chucks, and the swing arm 31 delivers the packaging bag to the chuck of the turntable where the secondary sealing device 2 is located. As another embodiment, the secondary sealing device 2 may also not adopt the turntable conveying method. The conveying mechanism 3 directly connects the secondary sealing device 2 with the primary vacuum sealing turntable 1. The conveying mechanism 3 includes the swing arm 31. The movement of the swing arm 31 drives the packaging bag that has been sealed by the primary vacuum sealing turntable 1 to the position where the secondary sealing device 2 is located.

[0044] Working principle: First, the bags are loaded and materials are added at the entrance of the first turntable, and then the bags are usually transferred to the primary vacuum sealing turntable 1 for vacuum sealing in the vacuum chamber 11. Before vacuum sealing, the bag mouth can also be pre-sealed on the first turntable after adding materials or the primary vacuum sealing turntable 1 to facilitate vacuuming. The double turntable structure, bag loading, material addition, and the structure of transferring to the vacuum chamber 11 for sealing are all conventional technical means used by those skilled in the art in the art, and will not be elaborated here. The packaging bags on the primary vacuum sealing turntable 1 are transported circumferentially with the turntable, and at the same time, the packaging bags are given time for one sealing. Therefore, a number of vacuum chambers are generally provided on a turntable to seal the packaging bags while rotating them circumferentially. When the primary vacuum sealing turntable 1 rotates to the connection position with the secondary sealing device 2 or another turntable, the primary sealing is completed.

[0045] After the packaging bag in the vacuum chamber 11 of the vacuum sealing turntable 1 is sealed once, it is transported by the conveying mechanism 3. The conveying mechanism 3 includes a device for receiving the packaging bag after the first sealing and conveying the packaging bag to at least the secondary sealing device 2. The conveying mechanism 3 generally includes a swing arm or a guide rail for traveling back and forth between the two turntables. The clamping head conveys the clamped packaging bag directly to the secondary sealing device 2 or through a clamp set on the turntable where the secondary sealing device 2 is located through the swing arm, and then conveys it to the secondary sealing device 2 through the rotation of the turntable, and then performs a secondary sealing treatment on the packaging bag. The secondary sealing treatment may not be a second sealing operation, but a sealing treatment after vacuum sealing. When the packaging bag arrives at the secondary sealing device 2, the left sealing head 21 and the right sealing head 22 clamp the outer surfaces of the left and right sides of the packaging bag through movement, and the activated ultrasonic generator 23 performs ultrasonic vibration treatment on the bag opening position of the packaging bag, which can crush tiny solid and fluid substances at the bag opening position, such as sesame particles, oil, etc. Then, the left sealing head 21 and the right sealing head 22 will seal the bag opening again to ensure that the bag opening is sealed again without impurities, to ensure the packaging yield rate, and to ensure the stability of the vacuum sealing quality, so that the final sealing effect is better. This avoids the problem of unstable vacuum packaging caused by tiny particles affecting the sealing of the packaging and product quality.

[0046] In this embodiment, when the left sealing head 21 and the right sealing head 22 move laterally, the translational force source 24 drives the driving block 29 at the output end to move laterally. Assuming that it moves to the right, the rightward movement of the driving block 29 will drive the swing rod 291 to swing, and the swing rod 291 pushes the folding rods 292 on both sides thereof to rotate from an oblique state to a horizontal direction, thereby pushing the first slider 27 and the second slider 28 in the direction away from the driving block 29, respectively. The left mounting seat 25 and the right mounting seat 26 are respectively connected to the second slider 28 and the first slider 27, and the first slider 27 is linked with the right mounting seat 26 through the connecting rod 294 to drive the right mounting seat 26 to move to the left. The second slider 28 is located above the left mounting seat 25 and is connected to the left mounting seat 25, and the second slider 28 drives the left mounting seat 25 to move to the left, so that the left mounting seat 25 and the right mounting seat 26 move toward each other. If the driving block 29 moves to the left, the action is opposite, and the left mounting seat 25 and the right mounting seat 26 move away from each other. Since the driving block, the first slider 27, the second slider 28 and the left sealing head 21 and the right sealing head 22 are not located at the same height, the horizontal space occupied by the secondary sealing device 2 can be saved.

[0047] Since the sealing head 14 generally retracts before the vacuum chamber is evacuated, it is ensured that the sealing head 14 is a certain distance away from the bag opening of the packaging bag, so that the bag opening of the packaging bag is in an open state, which is conducive to vacuuming the bag. When the sealing head 14 is sealing, it needs to move outward to close to the bag opening of the packaging bag for sealing. After the sealing is completed, the sealing head 14 can be retracted backward so that there is a certain distance between the sealing head 14 and the packaging bag for the movable plate 32 to extend into, but this distance is generally short. When bagging, it is only necessary to ensure that the fixed plate is on the inside and the movable plate 32 is on the outside. After the packaging bag is moved to the designated position of the vacuum chamber 11, the distance between the sealing head 14 and the packaging bag is small. Therefore, when the swing arm swings to the oblique upper or upper side of the space between the packaging bag and the sealing head, the movement of the connecting rod 1 35 and the connecting rod 2 36 drives the connecting rod 3 37 and the movable plate to perform a vertical trajectory movement with a certain arc.

[0048] The swing arm can move before the movable plate 32 or move simultaneously with the movable plate 32. As one embodiment, the swing arm drives the movable plate to move horizontally with an arc trajectory at the same time. The arcs of the two are small, so that the movable plate can be inserted between the packaging bag and the sealing head 14 in a nearly vertical manner. After the swing arm stops moving, the movement of the connecting rod 1 35 and the connecting rod 2 36 drives the connecting rod 3 37 and the movable plate 32 to move obliquely outward or arc-shaped outward to enter the third state, and cooperate with the matching plate 33 to clamp the bag body, and then the swing arm swings to the secondary sealing device 2 or through the clamp set on the turntable where the secondary sealing device 2 is located, and then moves in the opposite direction, and the movement of the connecting rod 1 35 and the connecting rod 2 36 drives the connecting rod 3 37 to move in the opposite direction to release the packaging bag. As another embodiment, when the swing arm swings to the right position, the movable plate 32 is in the first state, and then the movable plate 32 moves to enter the second state and the third state, and the swing arm 31 drives the transfer device to transfer the packaging bag. Both of these two implementations can repeatedly transfer the packaging bag without hitting the packaging bag or the sealing head 14 during the whole process.

[0049] In conclusion, the above is only a preferred embodiment of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention should fall within the scope of the patent of the present invention.

Claims

1. Vacuum packaging machine with sealing head and transfer device, including A primary vacuum sealing turntable (1), wherein the primary vacuum sealing turntable (1) is provided with a plurality of vacuum chambers (11) in a circumferential direction, wherein the primary vacuum sealing turntable (1) drives a packaging bag containing a material to be conveyed in a rotating manner while performing a primary sealing operation on the packaging bag in the vacuum chamber (11), wherein the vacuum chamber (11) is provided with a sealing head (14) at least on the inner side thereof; Features: It also includes a secondary sealing device (2), the secondary sealing device (2) being connected to one side of the primary vacuum sealing turntable (1) for conveying, and the secondary sealing device (2) breaking up the primary sealing position and performing secondary sealing processing; It also comprises a conveying mechanism (3), which is arranged at a connection position between the secondary sealing device (2) and the primary vacuum sealing turntable (1), and is used to receive the packaging bag after the primary sealing, and convey the packaging bag at least to the secondary sealing device (2); The conveying mechanism (3) comprises a swing arm (31), on which a transfer device is arranged, the transfer device comprising an inner movable plate (32) and an outer matching plate (33), and further comprising a mounting seat (34), a first connecting rod (35), a second connecting rod (36) and a third connecting rod (37), wherein the movable plate (32) and the matching plate (33) are arranged facing each other for clamping or releasing the packaging bag, and the two ends of the third connecting rod (37) are respectively connected to the mounting seat (34) through the first connecting rod (35), the second connecting rod (36) and the matching plate (33). The first connecting rod (35) and the second connecting rod (36) are parallel to each other and are rotatably connected to the mounting seat (34), at least one of the first connecting rod (35) and the second connecting rod (36) is connected to a rotation power source (38) that drives the first connecting rod (35) and the second connecting rod (36) to swing, the movable plate (32) is connected to the third connecting rod (37), and the first connecting rod (35) and the second connecting rod (36) drive the movable plate (32) connected to the third connecting rod (37) to move in a plane parallel to the swing of the swing arm (31); The swing arm (31) swings back and forth to drive the movable plate (32) to move closer to or away from the packaging bag, and the connecting rod three (37) drives the movable plate (32) to move at the same time. Before the movable plate (32) cooperates with the matching plate (33) to clamp the packaging bag, the movable plate (32) has at least a stroke from top to bottom to nearly vertically avoid the packaging bag and extend toward the inner side of the packaging bag and the head (14). The movable plate (32) always forms an avoidance with the head (14) during the movement. The movable plate (32) has a first state in which it is located above the space between the inner side of the packaging bag and the head (14), a second state in which it vertically enters the space between the inner side of the packaging bag and the head (14), and a third state in which it moves outward to cooperate with the matching plate (33) to clamp the packaging bag across the packaging bag.

2. The vacuum packaging machine with a sealing head giving way transfer device according to claim 1, characterized in that: Two groups of connecting rods (1) (35), (2) (36) and (3) (7) are arranged on the left and right sides. The two groups of connecting rods (3) move synchronously. The movable plate (32) has an extension portion (321) extending upward. The extension portion (321) is used to avoid the matching plate (33). The extension portion (321) is connected to the connecting rods (37) on both sides at the same time. The connecting rods (37) on both sides are kept above the matching plate (33) when moving.

3. The vacuum packaging machine with a sealing head giving way transfer device according to claim 1, characterized in that: The matching plate (33) is also mounted on the mounting seat (34). The mounting seat (34) is connected to the swing arm (31) via a transmission block (341). One end of the transmission block (341) is fixedly connected to the swing arm (31), and one end of the transmission block (341) is rotatably connected to the mounting seat (34).

4. The vacuum packaging machine with a sealing head giving way transfer device according to claim 1, characterized in that: It also includes a crank (39), which is arranged parallel to the swing arm (31), and an end of the crank (39) is hinged to the mounting seat (34) or the matching plate (33).

5. The vacuum packaging machine with the sealing head giving way transfer device according to claim 1, characterized in that: The vacuum chamber (11) is formed by inner and outer side panels (15), wherein the outer side panel (15) is connected to a turning power source, and the outer side panel (15) is turned up relative to the inner side panel (15) via a hinge (16) to open the vacuum chamber (11) or is turned inwardly with the inner side panel (15) to form the vacuum chamber (11), and the sealing head (14) is mounted on the inner wall of the panel (15).

6. The vacuum packaging machine with the sealing head giving way transfer device according to claim 1, characterized in that: The secondary sealing device (2) comprises a left sealing head (21) and a right sealing head (22); an ultrasonic generator (23) is provided on at least one side of the left sealing head (21) or the right sealing head (22); the ultrasonic generator (23) is connected to the left sealing head (21) or the right sealing head (22) or a vibration head is provided separately for breaking up the packaging bag; at least one of the left sealing head (21) or the right sealing head (22) is connected to a translational force source (24) for driving the two to move relative to or opposite to each other.

7. The vacuum packaging machine with the head-giving transfer device according to claim 1, characterized in that: The left sealing head (21) and the right sealing head (22) are respectively arranged on a left mounting seat (25) and a right mounting seat (26); the left mounting seat (25) is drivingly connected to a first slider (27); the right mounting seat (26) is drivingly connected to a second slider (28); and further comprising a driving block (29) connected to an output end of a translational power source (24); the first slider (27) and the second slider (28) are respectively drivingly connected to the driving block (29).

8. The vacuum packaging machine with the head-giving transfer device according to claim 7, characterized in that: The first slider (27), the driving block (29), and the second slider (28) are arranged in sequence from left to right. The driving block (29) and the second slider (28) move in the same direction in the left-right direction. The driving block (29) and the first slider (27) move in opposite directions in the left-right direction. A rotatable swing rod (291) is mounted on the driving block (29). Two ends of the swing rod (291) are respectively connected to the first slider (27) and the second slider (28) through a folding rod (292). Two ends of the folding rod (292) on the left are respectively hinged to the first slider (27) and the swing rod (291). Two ends of the folding rod (292) on the right are respectively hinged to the swing rod (291) and the second slider (28). A guide rod (293) is also provided for horizontally guiding the first slider (27), the driving block (29), and the second slider (28). The first slider (27), the driving block (29), and the second slider (28) are passed through the guide rod (293).

9. The vacuum packaging machine with the sealing head giving way transfer device according to claim 8, characterized in that: The first slider (27) and the second slider (28) are respectively located on the left and right sides of the driving block (29); the first slider (27) is linked to the right mounting seat (26) via a connecting rod (294); and the second slider (28) is located above the left mounting seat (25) and is connected to the left mounting seat (25).

10. The vacuum packaging machine with the sealing head giving way and transferring device according to claim 1, characterized in that: A bag loading device (12) and a feeding device (13) for adding materials to the packaging bag are arranged on one side of the primary vacuum sealing turntable (1), and the bag loading device (12) and the feeding device (13) are arranged on another turntable; an output device (4) for receiving the packaging bag after the secondary sealing process is arranged on one side of the secondary sealing device (2).

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