A sealing device and method for liquid feed additives with sterilization function

Abstract

This invention discloses a sealing device and method for liquid feed additives with sterilization function, relating to the field of sealing equipment technology. It includes a housing, a conveyor belt mounted on the lower part of the housing, a first electric push rod mounted on the upper side inside the housing, a first electric slide rail fixedly connected to the telescopic end of the first electric push rod, a first bracket fixedly connected to a slider on the first electric slide rail, symmetrically distributed longitudinal slide rods rotatably connected to the first bracket, a second electric slide rail mounted on the first electric slide rail, a second bracket fixedly connected to a slider on the second electric slide rail, symmetrically distributed transverse slide rods rotatably connected to the second bracket, and a support member slidably connected to the longitudinal slide rods and adjacent transverse slide rods. This invention uses the support member to open the bag opening, reducing the probability of wrinkles at the heat-sealing point, thereby ensuring the bag's airtightness and improving its resistance to breakage.

Description

Technical Field

[0001] This invention relates to the field of sealing equipment technology, and mainly proposes a sealing device and method for liquid feed additives with sterilization function. Background Technology

[0002] Liquid feed additives are substances added to liquid feeds to improve feed quality, increase feed efficiency, promote animal health and production performance, or improve the quality of livestock products. After production, liquid feed additives are typically stored and sold in bags. For ease of stacking and transportation, M-shaped bags are commonly used to hold liquid feed additives. After filling the bags with the feed additives, they need to be sealed. However, current sealing methods typically involve clamping the bag opening and then directly heat-sealing it. This cannot guarantee that the bag opening is flat during sealing; wrinkles may remain at the bag opening. Sealing the bag does not guarantee that the feed additives inside will remain completely sealed, which compromises the quality of some moisture-sensitive feed additives during storage. Furthermore, the folds at the seal are prone to stress concentration when subjected to external forces, reducing their resistance to breakage and lowering the seal strength, making them unsuitable for handling and storage. Additionally, when filling the bag with liquid feed additives through the filling nozzle, the inside of the bag opening directly contacts the outer wall of the filling device, causing bacteria from the filling device to adhere to the inside of the bag opening, which is detrimental to the preservation of the liquid feed additives inside. Summary of the Invention

[0003] This invention provides a sealing device for liquid feed additives with sterilization function, which overcomes the shortcomings of existing bags that cannot be kept flat during heat sealing, resulting in wrinkles at the bag seal.

[0004] The technical solution of the present invention is: a sealing device for liquid feed additives with sterilization function, comprising a housing, a conveyor belt installed at the lower part of the housing, a first electric push rod installed on the upper side inside the housing, a first electric slide rail fixedly connected to the telescopic end of the first electric push rod, symmetrically distributed sliders provided on the first electric slide rail, a first bracket fixedly connected to the sliders on the first electric slide rail, symmetrically distributed longitudinal slide rods rotatably connected to the first bracket, a second electric slide rail installed on the first electric slide rail, symmetrically distributed sliders provided on the second electric slide rail, a second bracket fixedly connected to the sliders on the second electric slide rail, symmetrically distributed transverse slide rods rotatably connected to the second bracket, the longitudinal slide rods and the adjacent transverse slide rods being slidably connected to a support member, symmetrically distributed ultraviolet lamps installed on the lower side of the second electric slide rail via a bracket, and a sealing assembly for sealing the bag provided in the upper part inside the housing.

[0005] Furthermore, the opposing sides of the symmetrically distributed support members on the same second bracket are provided with uniformly distributed spherical protrusions.

[0006] Furthermore, a third electric slide rail is mounted on the lower side of the second electric slide rail via a bracket. The third electric slide rail is provided with symmetrically distributed sliders. A first electric rotating shaft is mounted on the sliders of the third electric slide rail, and an adjustment plate is fixedly connected to the first electric rotating shaft.

[0007] Furthermore, the sealing assembly includes a fourth electric slide rail, which is installed inside the housing near the first electric slide rail. A slider is provided on the fourth electric slide rail, and a mounting bracket is fixedly connected to the slider. A fifth electric slide rail is mounted on the mounting bracket, and symmetrically distributed sliders are provided on the fifth electric slide rail. A sliding frame is fixedly connected to the sliders on the fifth electric slide rail, and the sliding frame is slidably connected to the mounting bracket. A heat-press sealing plate is slidably connected to each of the opposite sides of the symmetrically distributed sliding frames, and a second electric push rod is fixedly connected to each of these plates. The telescopic end of the second electric push rod is fixedly connected to the adjacent heat-press sealing plate.

[0008] Furthermore, each of the symmetrically distributed sliding frames has a positioning plate rotatably connected to its opposing sides.

[0009] Furthermore, a positioning motor is installed on one side of the sliding frame, and the output shaft of the positioning motor is fixedly connected to the adjacent positioning plate, while a torsion spring is fixedly connected between the sliding frame on the other side and the adjacent positioning plate.

[0010] Furthermore, a symmetrically distributed third electric push rod is installed in the lower part of the housing. The telescopic end of the third electric push rod is fixed to a support frame. A symmetrically distributed second electric rotating shaft is fixed to the opposite side of the symmetrically distributed support frame. The symmetrically distributed second electric rotating shafts on the same support frame are connected to a symmetrically distributed chain via a sprocket. The symmetrically distributed chains on the same support frame are rotatably connected to equidistant pressing rollers.

[0011] Furthermore, the chain is fixed with equidistant support posts.

[0012] Furthermore, it also includes symmetrically distributed longitudinal dual-axis motors, which are mounted on adjacent first brackets. The two output shafts of the longitudinal dual-axis motors are respectively fixedly connected to adjacent and symmetrically distributed longitudinal slide rods. The longitudinal slide rods are splined with longitudinal spline rings, and symmetrically distributed longitudinal rubber strips are fixedly connected to the longitudinal spline rings. Tension springs are fixed between the longitudinal slide rods and adjacent support members and adjacent longitudinal spline rings. The second bracket is equipped with a transverse dual-axis motor, whose two output shafts are respectively fixedly connected to adjacent and symmetrically distributed transverse slide rods. The transverse slide rods are splined with transverse spline rings, and symmetrically distributed transverse rubber strips are fixedly connected to the transverse spline rings. Tension springs are fixed between the transverse slide rods and adjacent support members and adjacent transverse spline rings. The lower side of the longitudinal rubber strips is coplanar with the lower side of the support members. The maximum distance between the transverse rubber strips and the central axis of the adjacent transverse slide rods is equal to the maximum distance between the support members and the central axis of the adjacent transverse slide rods.

[0013] A method for sealing liquid feed additives, using a liquid feed additive sealing device with sterilization function, is described in the following steps:

[0014] S1: Start the conveyor belt to move the bag into the housing, stop the conveyor belt and start the third electric push rod and the second electric rotating shaft, drive the squeezing roller through the chain to move the additive at the bottom of the bag to the top of the bag until the shape of the bottom of the bag is restored, and stop the third electric push rod and the second electric rotating shaft;

[0015] S2: Activate the first electric push rod, the first electric slide rail and the second electric slide rail, use the support member to open the bag opening, then control the first electric push rod again to drive the support member to move upward, the support member uses the spherical protrusion on it to flatten the bag opening, and stop the first electric push rod, the first electric slide rail and the second electric slide rail;

[0016] S3: Control the first electric push rod, the first electric slide rail, and the second electric slide rail to make the support member open the bag opening for the second time. Then stop the first electric push rod, the first electric slide rail, and the second electric slide rail and start the longitudinal dual-axis motor and the transverse dual-axis motor to drive the longitudinal spline ring and the transverse spline ring to rotate. The longitudinal spline ring and the transverse spline ring respectively drive the adjacent longitudinal rubber strip and the transverse rubber strip to rotate. The rotation of the longitudinal rubber strip and the transverse rubber strip beats the bag opening. At this time, start the first electric slide rail and the second electric slide rail to control the support member to move along the bag opening. The support member drives the adjacent longitudinal spline ring and the transverse spline ring to move through the adjacent tension spring to beat the position of the bag opening that was originally covered by the support member. Stop the longitudinal dual-axis motor, the transverse dual-axis motor, the first electric slide rail, and the second electric slide rail.

[0017] S4: Start the ultraviolet lamp to disinfect and sterilize the inside of the bag opening, then stop the ultraviolet lamp and start the first electric rotating shaft to drive the adjacent adjusting plate to rotate 90°, stop the first electric rotating shaft and start the third electric slide rail, and at the same time, cooperate with the first electric slide rail to control the movement of the support member to fold the bag into an M shape, then stop the third electric slide rail and the first electric slide rail.

[0018] S5: Sequentially start the fourth electric slide rail, the fifth electric slide rail, and the positioning motor to clamp the bag opening using the positioning plate. Then stop the fourth electric slide rail, the fifth electric slide rail, and the positioning motor, and start the second electric push rod and the heat-sealing plate to heat-seal the bag opening using the heat-sealing plate. Then stop the heat-sealing plate and the second electric push rod, and sequentially control the second electric push rod, the positioning motor, the fifth electric slide rail, and the fourth electric slide rail to reset the positioning plate and adjacent parts. Start the first electric push rod and the third electric push rod to move and reset their adjacent parts. Finally, stop the first electric push rod and the third electric push rod.

[0019] The advantages and positive effects of this invention compared with the prior art are as follows: This invention uses a support to open the bag opening, reducing the probability of wrinkles at the heat-sealing point of the bag opening, thereby ensuring the bag's airtightness and improving its resistance to damage. At the same time, it uses an ultraviolet lamp to irradiate the inside of the bag opening, eliminating bacteria inside the bag opening and reducing the probability of feed additives inside the bag deteriorating due to the presence of bacteria.

[0020] By incorporating spherical protrusions in the support components, it is easier to stretch the bag opening using the support components. This reduces the probability of the bag openings not being aligned due to vertical wrinkles.

[0021] The reciprocating movement of the squeeze rollers pushes the additives that accumulate at the bottom of the bag upwards during filling, making the sides of the bag more flat and fully expanding the part of the bag containing the additives. This reduces the volume of air inside the bag after sealing and makes the bag shape more uniform, facilitating subsequent handling and storage.

[0022] When the bag opening is tapped with longitudinal and transverse rubber strips, the position of the support is changed, and the additives adhering to the inside of the bag opening are removed, reducing the impact of the additives on the sealing effect after sealing. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a three-dimensional structural diagram of the housing, hot-press sealing plate, and support frame of the present invention;

[0025] Figure 3 This is a three-dimensional sectional view of the internal structure of the housing of the present invention;

[0026] Figure 4 This is a three-dimensional structural diagram of the first electric slide rail, the first bracket, and the longitudinal slide bar of the present invention;

[0027] Figure 5 This is a three-dimensional structural diagram of the second bracket, the horizontal slide bar, and the support member of the present invention;

[0028] Figure 6 This is a three-dimensional structural diagram of the housing, the fourth electric slide rail, and the mounting bracket of the present invention;

[0029] Figure 7 This is a three-dimensional structural diagram of the sliding frame, the hot-press sealing plate, and the second electric push rod of the present invention;

[0030] Figure 8 This is a three-dimensional structural diagram of the sliding frame, positioning plate, and positioning motor of the present invention;

[0031] Figure 9 Appendix to this invention Figure 8 Enlarged view of point A in the middle;

[0032] Figure 10 This is an exploded view of the sliding frame, positioning plate, and positioning motor of the present invention;

[0033] Figure 11 This is a three-dimensional structural diagram of the chain, extrusion roller, and support column of the present invention;

[0034] Figure 12 This is a three-dimensional structural diagram of the longitudinal dual-axis motor, longitudinal spline ring, and longitudinal rubber strip of the present invention;

[0035] Figure 13 This is a three-dimensional structural diagram of the second support, the horizontal slide bar, and the horizontal spline ring of the present invention.

[0036] Component names and numbers in the diagram: 1-House, 2-Conveyor belt, 3-First electric push rod, 4-First electric slide rail, 5-First bracket, 6-Longitudinal slide rod, 7-Second electric slide rail, 701-UV lamp, 8-Second bracket, 9-Horizontal slide rod, 10-Support component, 101-Spherical protrusion, 11-Third electric slide rail, 12-First electric rotating shaft, 13-Adjusting plate, 14-Fourth electric slide rail, 15-Mounting bracket, 16 - Fifth electric slide rail, 17-sliding frame, 18-hot press sealing plate, 19-second electric push rod, 20-positioning plate, 21-positioning motor, 22-third electric push rod, 23-support frame, 24-second electric rotating shaft, 25-chain, 26-extrusion roller, 27-support column, 28-longitudinal dual-axis motor, 29-longitudinal spline ring, 30-longitudinal rubber strip, 31-transverse dual-axis motor, 32-transverse spline ring, 33-transverse rubber strip. Detailed Implementation

[0037] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description and drawings.

[0038] After the feed additives are filled into the bag, the bag needs to be sealed. However, the existing sealing method usually involves clamping the opening of the bag and then directly heat-sealing it. This cannot guarantee that the bag is in a flat state when sealing, meaning that there may be wrinkles at the sealing point. Therefore, after sealing the bag, it is impossible to guarantee that the feed additives inside the bag are completely sealed. This makes it impossible to guarantee the quality of some feed additives that are susceptible to moisture and spoilage during storage.

[0039] Example 1: A sealing device for liquid feed additives with sterilization function, please refer to... Figures 1-5The system includes a housing 1, on which a control terminal (an existing device not shown in the figure) is mounted. A conveyor belt 2 is installed at the lower part of the housing 1, used to transport bags filled with additives into the housing 1. A first electric push rod 3, electrically connected to the control terminal, is installed on the upper side inside the housing 1. The telescopic end of the first electric push rod 3 is fixedly connected to a first electric slide rail 4, also electrically connected to the control terminal. Two sliders symmetrically distributed front and rear are provided on the first electric slide rail 4. Each slider on the first electric slide rail 4 is fixedly connected to a first bracket 5. The first bracket 5 is rotatably connected to two longitudinal slide rods symmetrically distributed left and right. The first electric slide rail 4 is equipped with a second electric slide rail 7 that is electrically connected to the control terminal. The second electric slide rail 7 has two sliders that are symmetrically distributed on the left and right. The two sliders on the second electric slide rail 7 are fixedly connected to a second bracket 8. The second bracket 8 is rotatably connected to two horizontal slide rods 9 that are symmetrically distributed front and back. The longitudinal slide rod 6 and the adjacent horizontal slide rod 9 are slidably connected to a support member 10. The lower side of the middle of the second electric slide rail 7 is equipped with two ultraviolet lamps 701 that are symmetrically distributed front and back through the bracket. The ultraviolet lamps 701 are electrically connected to the control terminal. The upper part of the housing 1 is equipped with a sealing assembly for heat sealing the bag.

[0040] Please refer to Figure 5 On the same second support 8, two support members 10 symmetrically distributed on opposite sides of their lower parts are provided with evenly distributed spherical protrusions 101. The spherical protrusions 101 are used to increase the friction between the adjacent support members 10 and the bag so that the bag can be stretched flat by the support members 10.

[0041] Please refer to Figure 4 and Figure 5 The third electric slide rail 11 is mounted on the lower side of the second electric slide rail 7 via a bracket. Two sliders are symmetrically distributed on the third electric slide rail 11. The lower side of each slider on the third electric slide rail 11 is equipped with a first electric rotating shaft 12 that is electrically connected to the control terminal. The first electric rotating shaft 12 is fixedly connected to an adjustment plate 13.

[0042] Please refer to Figure 3 , Figure 6 and Figure 7The sealing assembly includes a fourth electric slide rail 14, which is electrically connected to a control terminal. A slider is provided on the fourth electric slide rail 14. The fourth electric slide rail 14 is installed in the upper rear part of the housing 1. A mounting bracket 15 is fixed to the slider on the fourth electric slide rail 14. A fifth electric slide rail 16, which is electrically connected to the control terminal, is installed on the left side of the mounting bracket 15. Two sliders are symmetrically distributed on the fifth electric slide rail 16. A sliding frame 17 is fixed to the upper side of each of the two sliders on the fifth electric slide rail 16. The right side of the sliding frame 17 is slidably connected to the mounting bracket 15. A heat-press sealing plate 18 is slidably connected to the opposite sides of the two symmetrically distributed sliding frames 17 and a second electric push rod 19, which is electrically connected to the control terminal, is fixedly connected to the telescopic end of the second electric push rod 19 and the middle part of the adjacent heat-press sealing plate 18.

[0043] Please refer to Figure 7 Two symmetrically distributed sliding frames 17 are rotatably connected to positioning plates 20 on their opposing sides. The positioning plates 20 are cylindrical. When the two sliders of the fifth electric slide rail 16 move to the contact state, the ends of the two positioning plates 20 are located on the same circle.

[0044] Please refer to Figures 8-10 The right end of the front sliding frame 17 is equipped with a positioning motor 21 that is electrically connected to the control terminal, and the output shaft of the positioning motor 21 is fixedly connected to the right end of the adjacent positioning plate 20. A torsion spring is fixedly connected between the left end of the rear sliding frame 17 and the adjacent positioning plate 20.

[0045] Please refer to Figure 1 , Figure 2 and Figure 11 The lower part of the housing 1 is equipped with two third electric push rods 22 that are symmetrically distributed front and back. The third electric push rods 22 are electrically connected to the control terminal. The telescopic end of the third electric push rods 22 is fixedly connected to a support frame 23. The two symmetrically distributed support frames 23 are each fixedly connected to two second electric rotating shafts 24 that are symmetrically distributed vertically on opposite sides. The second electric rotating shafts 24 are electrically connected to the control terminal. The two second electric rotating shafts 24 that are symmetrically distributed on the same support frame 23 are connected to a chain 25 that is symmetrically distributed left and right through a sprocket. Three equidistant pressing rollers 26 are rotatably connected to two adjacent chains 25 on the same support frame 23.

[0046] Please refer to Figure 11 Several support columns 27 are fixedly connected to the chain 25 at equal intervals. The support columns 27 are used to support the bag and prevent the bag from tipping over.

[0047] After the feed additives are filled into the bags, the weight and impact of the additives during filling cause them to accumulate at the bottom of the bags, resulting in severe deformation of the bottom part of the bags and affecting subsequent transportation and storage. The solution is as follows: The worker starts the conveyor belt 2 via the control terminal. The conveyor belt 2 rotates and moves the bags filled with additives to the left. After the bags move into the housing 1, the control terminal stops the conveyor belt 2 and starts the two third electric push rods 22 and the second electric rotating shaft 24. The telescopic ends of the third electric push rods 22 extend and drive the adjacent support frame 23 to move. At the same time, the second electric rotating shaft 24 on the front moves counterclockwise. As the needle rotates (from right to left), the second electric shaft 24 on the rear rotates clockwise. Simultaneously, the second electric shaft 24 drives two adjacent chains 25 to rotate via a sprocket. The chains 25 drive three squeezing rollers 26 and several support columns 27 to rotate. As the distance between the two support frames 23 gradually decreases, the squeezing rollers 26 come into contact with the side of the bag. As the squeezing rollers 26 in contact with the bag move upward under the drive of the adjacent chains 25, they push the additives inside the bag upward, making the additives more uniform inside the bag. At the same time, as the additives move to the upper part of the bag, the lower shape of the bag gradually returns to normal.

[0048] As the distance between the two support frames 23 gradually decreases, the additive inside the bag gradually moves upward under the action of the squeeze roller 26, and the lower part of the bag returns to its normal shape (as shown in the attached figure). Figure 2As the additive moves upward inside the bag, its height gradually increases. Several support columns 27 provide support to the sides of the bag to prevent it from tipping over. This continues until the distance between the two support frames 23 decreases to the normal thickness of the bag (i.e., the M-shape of the bag is stretched flat, and the sides of the bag tend to be straight). At this point, the control terminal stops the third electric push rod 22 and the second electric rotating shaft 24. As the height of the additive inside the bag rises, the bag opening at the top is gradually stretched open by the additive. At this time, the control terminal activates the first electric push rod 3. The telescopic end of the first electric push rod 3 extends and drives the first electric slide rail 4 downward. The first electric slide rail 4 drives the four support members 10 to move downward together until the height of the lower sides of the four support members 10 is lower than the height of the bag opening. At this point, the control terminal stops the first electric push rod. 3. Start the first electric slide rail 4 and the second electric slide rail 7. The two sliders on the first electric slide rail 4 drive the two adjacent first supports 5 to move away from each other. The first support 5 on the front side drives the adjacent support 10 to slide along the adjacent horizontal slide bar 9 and move forward through the adjacent vertical slide bar 6. The support 10 on the rear side moves backward. At the same time, the two sliders on the second electric slide rail 7 drive the two adjacent second supports 8 to move away from each other. The second support 8 on the right side drives the adjacent support 10 to slide along the adjacent vertical slide bar 6 and move to the right through the adjacent horizontal slide bar 9. The support 10 on the left side moves to the left, so that the support 10 gradually contacts the inside of the bag and opens the bag opening (this is the first time the bag opening is opened). After the perimeter of the rectangle formed by the four support 10 is consistent with the perimeter of the bag opening, the control terminal stops the first electric slide rail 4 and the second electric slide rail 7.

[0049] After the four support members 10 open the bag opening together, the bag opening may not be on the same horizontal plane due to possible wrinkles. At this time, the control terminal activates the first electric push rod 3. The telescopic end of the first electric push rod 3 retracts and drives the four support members 10 to move upward together through the first electric slide rail 4. During the upward movement of the support members 10, if no wrinkles appear on the left side of the bag, the left support member 10 moves upward relative to the bag. If wrinkles appear on the right side of the bag, the right support member 10 moves upward on the right side of the bag through the adjacent spherical protrusion 101, reducing the wrinkles and making the bag opening more aligned with the same horizontal plane. As the support members 10 move upward... As the support member 10 gradually loses contact with the bag, the control terminal stops the first electric push rod 3 and starts the first electric slide rail 4 and the second electric slide rail 7, repeating the above steps in reverse to reduce the distance between the four support members 10 until the support members 10 are reset. Then, the control terminal starts the first electric push rod 3, the first electric slide rail 4 and the second electric slide rail 7 in sequence, so that the telescopic end of the first electric push rod 3 extends, and repeats the above steps to make the four support members 10 open the bag opening together (this is the second time the bag opening is opened). After the above operation, the wrinkles at the bag opening are removed, and the four corners of the bag opening are on the same horizontal plane.

[0050] Before filling the bag with additives, it is necessary to disinfect the bag to reduce the probability of the additives deteriorating inside. However, when filling the bag with additives, the bag needs to be placed over the filling opening, with the inside of the bag opening in direct contact with the filling opening. This causes bacteria on the filling opening to adhere to the inside of the bag opening, which is not conducive to the preservation of the additives. The solution is as follows: After the bag opening is opened for the second time by the four support members 10, the control terminal stops the first electric push rod 3, the first electric slide rail 4 and the second electric slide rail 7, and starts two ultraviolet lamps 701. The ultraviolet lamps 701 irradiate the inside of the bag opening to sterilize it and reduce the number of bacteria inside the bag. The number of bacteria is reduced, thereby reducing the probability of additives deteriorating when stored in the bag. After the ultraviolet lamp 701 is turned on for a certain period of time, the control terminal stops the two ultraviolet lamps 701 and starts the two first electric rotating shafts 12. The first electric rotating shaft 12 drives the adjacent adjusting plate 13 to rotate 90°, so that the lower side of the adjusting plate 13 is coplanar with the lower side of the support member 10. Then the control terminal starts the third electric slide rail 11. The two sliders on the third electric slide rail 11 drive the two adjacent adjusting plates 13 to move closer to each other. The two adjusting plates 13 gradually contact the outside of the bag. At this time, the control terminal starts the first electric slide rail 4.

[0051] After the control terminal starts the first electric slide rail 4, the two sliders on the first electric slide rail 4 drive the two adjacent first brackets 5 to move closer to each other, so that the distance between the two support members 10 symmetrically distributed in the front and back direction is reduced. At the same time, as the two adjusting plates 13 move closer to each other, the left and right sides of the bag are folded into an M shape until the upper part of the bag returns to its initial unopened shape. Then the control terminal stops the first electric slide rail 4 and the third electric slide rail 11 and starts the fourth electric slide rail 14.

[0052] After the fourth electric slide rail 14 is activated, the slider on the fourth electric slide rail 14 drives the mounting bracket 15 to move downwards. The mounting bracket 15 drives the two second electric push rods 19 to move downwards through the two sliding brackets 17 until the upper sides of the two second electric push rods 19 are both below the four support members 10. At this point, the fourth electric slide rail 14 stops, and the fifth electric slide rail 16 is activated. The two sliders on the fifth electric slide rail 16 drive the two adjacent sliding brackets 17 to move closer to each other, so that the distance between the two positioning plates 20 gradually decreases. The positioning plates 20 gradually contact the outer side of the upper part of the bag and squeeze the upper part of the bag towards the middle until the distance between the two positioning plates 20 is reduced to the minimum value. At this point, the fifth electric slide rail 16 stops. The two sliders on rail 16 come into contact with each other and stop moving. The control terminal stops the fifth electric slide rail 16 and starts the positioning motor 21. The positioning motor 21 drives the adjacent positioning plate 20 to rotate. The positioning plate 20 drives another positioning plate 20 to rotate together through the bag and twists the torsion spring adjacent to the other positioning plate 20. At the same time, it bends the upper part of the bag. Then the control terminal stops the positioning motor 21 and starts the two second electric push rods 19. The telescopic end of the second electric push rod 19 extends and drives the adjacent heat-sealing plate 18 to move, so that the distance between the two heat-sealing plates 18 gradually decreases and finally contacts the outside of the bag. At this time, the control terminal controls the heat-sealing plate 18 to heat-seal the upper part of the bag.

[0053] After the bag is sealed, the control terminal stops the heat-sealing plate 18 and starts the two second electric push rods 19. The telescopic ends of the second electric push rods 19 retract and drive the heat-sealing plate 18 to reset relative to the adjacent sliding frame 17. Then, the control terminal starts the positioning motor 21, the fifth electric slide rail 16 and the fourth electric slide rail 14 in sequence to reset the sliding frame 17 and its parts. The control terminal starts the first electric slide rail 4, the second electric slide rail 7 and the third electric slide rail 11 in sequence to reset the adjusting plate 13 relative to the third electric slide rail 11. At the same time, it resets the four support members 10 relative to the first electric slide rail 4. Then, the control terminal starts the first electric push rod 3 to retract and reset the telescopic end of the first electric push rod 3. The control terminal controls the telescopic end of the third electric push rod 22 to retract and reset. The telescopic end of the third electric push rod 22 drives the adjacent support frame 23 to move and reset.

[0054] When sealing bags with heat, if there are additives on the inside of the bag opening to be sealed, the additives will remain at the seal after the bag is sealed, resulting in a reduction in the contact area on both sides of the bag opening and affecting the sealing effect of the bag.

[0055] Example 2: Based on Example 1, please refer to... Figure 12 and Figure 13It also includes two longitudinal dual-axis motors 28 symmetrically distributed front and rear. The longitudinal dual-axis motors 28 are electrically connected to the control terminal. The longitudinal dual-axis motors 28 are installed in the middle of the lower side of the adjacent first bracket 5. The two output shafts of the longitudinal dual-axis motors 28 are respectively fixed to two adjacent and symmetrically distributed longitudinal slide rods 6. The longitudinal slide rods 6 are splined with longitudinal spline rings 29. The longitudinal spline rings 29 are fixed with two symmetrically distributed longitudinal rubber strips 30. The longitudinal rubber strips 30 are used to beat the bag. The longitudinal slide rods 6 and the adjacent support members 10 are all fixed with tension springs between the longitudinal slide rods 6 and the adjacent longitudinal spline rings 29 to maintain the position of the longitudinal spline rings 29. The middle of the lower side of the second bracket 8 is equipped with a horizontal dual-axis motor 31, which is electrically connected to the control terminal. The two output shafts of the horizontal dual-axis motor 31 are respectively fixed to two longitudinal spline rings 29. Each output shaft is fixedly connected to two adjacent and symmetrically distributed transverse slide rods 9. A transverse spline ring 32 is splined on the transverse slide rod 9. Two symmetrically distributed transverse rubber strips 33 are fixedly connected to the transverse spline ring 32. The transverse rubber strips 33 are used to beat the bag. A tension spring is fixed between the transverse slide rod 9 and the adjacent support member 10 and the adjacent transverse spline ring 32 to maintain the position of the transverse spline ring 32. The lower side of the longitudinal rubber strip 30 is coplanar with the lower side of the support member 10. The maximum distance between the transverse rubber strip 33 and the central axis of the adjacent transverse slide rod 9 is equal to the maximum distance between the central axis of the support member 10 and the adjacent transverse slide rod 9. After the support member 10 is inserted into the bag, it is ensured that both the longitudinal rubber strip 30 and the transverse rubber strip 33 can contact the bag and beat it.

[0056] After the four support members 10 open the bag opening for the second time, the control terminal starts two longitudinal dual-axis motors 28 and two transverse dual-axis motors 31. The output shaft of the longitudinal dual-axis motor 28 rotates and drives the two adjacent longitudinal slide rods 6 to rotate. The longitudinal slide rods 6 drive the adjacent longitudinal spline rings 29 and longitudinal rubber strips 30 to rotate through splines. At the same time, the output shaft of the transverse dual-axis motor 31 rotates and drives the two adjacent transverse slide rods 9 to rotate. The transverse slide rods 9 drive the adjacent transverse spline rings 32 and transverse rubber strips 33 to rotate through splines. The rotation of the longitudinal rubber strips 30 and transverse rubber strips 33 beats the bag opening, knocking away the additives adhering to the inside of the bag opening.

[0057] During the rotation of the longitudinal rubber strip 30 and the transverse rubber strip 33, the control terminal activates the first electric slide rail 4 and the second electric slide rail 7, causing the two sliders on the first electric slide rail 4 to move away from each other and increasing the distance between the symmetrically distributed support members 10. At the same time, the two sliders on the second electric slide rail 7 move closer to each other and decrease the distance between the symmetrically distributed support members 10. During the movement of the support members 10, the longitudinal spline ring 29 and the transverse spline ring 32 move under the action of their adjacent tension springs, so that the longitudinal spline ring 29 is located in the middle of the adjacent support member 10 and the adjacent longitudinal dual-axis motor 28, and the transverse spline ring 32 is located in the middle of the adjacent support member 10 and the adjacent transverse dual-axis motor 31, and continuously taps the bag opening. Through the movement of the four support members 10, the longitudinal spline ring 29 and the transverse spline ring 32 tap and remove the additives that were originally covered by the support members 10 on the inside of the bag.

[0058] After the longitudinal spline ring 29 and the transverse spline ring 32 have been tapping for a period of time, the control terminal stops the longitudinal dual-axis motor 28 and the transverse dual-axis motor 31, and controls the four support members 10 to move to the initial position (the position before the longitudinal spline ring 29 and the transverse spline ring 32 tap the bag opening) through the first electric slide rail 4 and the second electric slide rail 7, and continues the steps in Example 1 to perform heat sealing on the bag opening.

[0059] Example 3: Based on Example 2, a method for sealing liquid feed additives is provided, using a liquid feed additive sealing device with sterilization function. The specific process is as follows;

[0060] S1: Start the conveyor belt 2 to move the bag into the housing 1, stop the conveyor belt 2 and start the third electric push rod 22 and the second electric rotating shaft 24, drive the squeezing roller 26 to move through the chain 25, squeeze the additive at the bottom of the bag to the top of the bag until the shape of the bottom of the bag is restored, and stop the third electric push rod 22 and the second electric rotating shaft 24.

[0061] S2: Start the first electric push rod 3, the first electric slide rail 4 and the second electric slide rail 7, and use the support member 10 to open the bag opening. Then control the first electric push rod 3 again to drive the support member 10 to move upward. The support member 10 uses its spherical protrusion 101 to flatten the bag opening and stop the first electric push rod 3, the first electric slide rail 4 and the second electric slide rail 7.

[0062] S3: Control the first electric push rod 3, the first electric slide rail 4, and the second electric slide rail 7 to make the support member 10 open the bag opening for the second time. Then stop the first electric push rod 3, the first electric slide rail 4, and the second electric slide rail 7 and start the longitudinal dual-axis motor 28 and the transverse dual-axis motor 31 to drive the longitudinal spline ring 29 and the transverse spline ring 32 to rotate. The longitudinal spline ring 29 and the transverse spline ring 32 drive the adjacent longitudinal rubber strip 30 and the transverse rubber strip 33 to rotate respectively. The rotation of the longitudinal rubber strip 30 and the transverse rubber strip 33 beats the bag opening. At this time, start the first electric slide rail 4 and the second electric slide rail 7 to control the support member 10 to move along the bag opening. The support member 10 drives the adjacent longitudinal spline ring 29 and the transverse spline ring 32 to move through the adjacent tension springs to beat the position of the bag opening that was originally covered by the support member 10. Stop the longitudinal dual-axis motor 28, the transverse dual-axis motor 31, the first electric slide rail 4, and the second electric slide rail 7.

[0063] S4: Start the ultraviolet lamp 701 to disinfect and sterilize the inside of the bag opening, then stop the ultraviolet lamp 701 and start the first electric rotating shaft 12 to drive the adjacent adjusting plate 13 to rotate 90°, stop the first electric rotating shaft 12 and start the third electric slide rail 11, while cooperating with the first electric slide rail 4 to control the movement of the support member 10 to fold the bag into an M shape, then stop the third electric slide rail 11 and the first electric slide rail 4.

[0064] S5: Sequentially start the fourth electric slide rail 14, the fifth electric slide rail 16 and the positioning motor 21 to clamp the bag opening with the positioning plate 20. Then stop the fourth electric slide rail 14, the fifth electric slide rail 16 and the positioning motor 21 and start the second electric push rod 19 and the heat-sealing plate 18 to heat-seal the bag opening with the heat-sealing plate 18. Then stop the heat-sealing plate 18 and the second electric push rod 19 and sequentially control the second electric push rod 19, the positioning motor 21, the fifth electric slide rail 16 and the fourth electric slide rail 14 to reset the positioning plate 20 and adjacent parts. Start the first electric push rod 3 and the third electric push rod 22 to move and reset their adjacent parts. Finally, stop the first electric push rod 3 and the third electric push rod 22.

[0065] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

Claims

1. A sealing device for liquid feed additives with sterilization function, comprising a housing (1), wherein a conveyor belt (2) is installed at the lower part of the housing (1), characterized in that: It also includes a first electric push rod (3), which is installed on the upper side inside the housing (1). The telescopic end of the first electric push rod (3) is fixed to a first electric slide rail (4). The first electric slide rail (4) is provided with symmetrically distributed sliders. The sliders on the first electric slide rail (4) are fixed to a first bracket (5). The first bracket (5) is rotatably connected to symmetrically distributed longitudinal slide rods (6). The first electric slide rail (4) is installed with a second electric slide rail (7). The second electric slide rail (7) is provided with symmetrically distributed sliders. The sliders on the second electric slide rail (7) are fixed to a second bracket (8). The second bracket (8) is rotatably connected to symmetrically distributed transverse slide rods (9). The longitudinal slide rods (6) and the adjacent transverse slide rods (9) are slidably connected to a support member (10). The lower side of the second electric slide rail (7) is equipped with symmetrically distributed ultraviolet lamps (701) through a bracket. The upper part inside the housing (1) is provided with a sealing assembly for sealing the bag. It also includes symmetrically distributed longitudinal dual-axis motors (28), which are mounted on adjacent first brackets (5). The two output shafts of the longitudinal dual-axis motors (28) are respectively fixed to adjacent and symmetrically distributed longitudinal slide rods (6). A longitudinal spline ring (29) is splined on the longitudinal slide rod (6), and symmetrically distributed longitudinal rubber strips (30) are fixed to the longitudinal spline ring (29). A tension spring is fixed between the longitudinal slide rod (6) and the adjacent support member (10) and the adjacent longitudinal spline ring (29). A transverse dual-axis motor (31) is mounted on the second bracket (8). The two output shafts are respectively fixed to the adjacent and symmetrically distributed transverse slide rods (9). A transverse spline ring (32) is connected to the transverse slide rod (9). A transverse rubber strip (33) is fixed to the transverse spline ring (32). A tension spring is fixed between the transverse slide rod (9) and the adjacent support member (10) and the adjacent transverse spline ring (32). The lower side of the longitudinal rubber strip (30) is coplanar with the lower side of the support member (10). The maximum distance between the transverse rubber strip (33) and the central axis of the adjacent transverse slide rod (9) is equal to the maximum distance between the support member (10) and the central axis of the adjacent transverse slide rod (9).

2. The sealing device for a liquid feed additive with sterilization function according to claim 1, characterized in that: On the same second bracket (8), the opposite sides of the support members (10) symmetrically distributed are provided with uniformly distributed spherical protrusions (101).

3. A sealing device for a liquid feed additive with sterilization function according to claim 2, characterized in that: A third electric slide rail (11) is mounted on the lower side of the second electric slide rail (7) via a bracket. The third electric slide rail (11) is provided with symmetrically distributed sliders. The sliders on the third electric slide rail (11) are equipped with a first electric rotating shaft (12). The first electric rotating shaft (12) is fixedly connected to an adjustment plate (13).

4. A sealing device for a liquid feed additive with sterilization function according to claim 3, characterized in that: The sealing assembly includes a fourth electric slide rail (14), which is installed inside the housing (1) on the side near the first electric slide rail (4). A slider is provided on the fourth electric slide rail (14), and a mounting bracket (15) is fixedly connected to the slider on the fourth electric slide rail (14). A fifth electric slide rail (16) is installed on the mounting bracket (15), and a symmetrically distributed slider is provided on the fifth electric slide rail (16). A sliding frame (17) is fixedly connected to the slider on the fifth electric slide rail (16), and the sliding frame (17) is slidably connected to the mounting bracket (15). A heat-press sealing plate (18) is slidably connected to the opposite sides of the symmetrically distributed sliding frame (17), and a second electric push rod (19) is fixedly connected to it. The telescopic end of the second electric push rod (19) is fixedly connected to the adjacent heat-press sealing plate (18).

5. A sealing device for a liquid feed additive with sterilization function according to claim 4, characterized in that: The sliding frame (17) is symmetrically distributed with a positioning plate (20) rotatably connected to each other on opposite sides.

6. A sealing device for a liquid feed additive with sterilization function according to claim 5, characterized in that: A positioning motor (21) is installed on one side of the sliding frame (17), and the output shaft of the positioning motor (21) is fixedly connected to the adjacent positioning plate (20). A torsion spring is fixedly connected between the sliding frame (17) on the other side and the adjacent positioning plate (20).

7. A sealing device for a liquid feed additive with sterilization function according to claim 6, characterized in that: The lower part of the housing (1) is equipped with symmetrically distributed third electric push rods (22). The telescopic end of the third electric push rod (22) is fixed to a support frame (23). The opposing sides of the symmetrically distributed support frame (23) are fixed with symmetrically distributed second electric rotating shafts (24). The symmetrically distributed second electric rotating shafts (24) on the same support frame (23) are connected to symmetrically distributed chains (25) via sprockets. The symmetrically distributed chains (25) on the same support frame (23) are rotatably connected to equidistant pressing rollers (26).

8. A sealing device for a liquid feed additive with sterilization function according to claim 7, characterized in that: Equidistant support posts (27) are fixed to the chain (25).

9. A method for sealing liquid feed additives, characterized in that: The sealing device for a liquid feed additive with sterilization function according to claim 8 is as follows: S1: Start the conveyor belt (2) to move the bag into the housing (1), stop the conveyor belt (2) and start the third electric push rod (22) and the second electric rotating shaft (24), drive the squeezing roller (26) to move through the chain (25), squeeze the additive at the bottom of the bag to the top of the bag until the shape of the bottom of the bag is restored, and stop the third electric push rod (22) and the second electric rotating shaft (24). S2: Start the first electric push rod (3), the first electric slide rail (4) and the second electric slide rail (7), use the support member (10) to open the bag opening, then control the first electric push rod (3) again to drive the support member (10) to move upward, the support member (10) uses the spherical protrusion (101) on it to flatten the bag opening, and stop the first electric push rod (3), the first electric slide rail (4) and the second electric slide rail (7). S3: Control the first electric push rod (3), the first electric slide rail (4), and the second electric slide rail (7) to make the support member (10) open the bag opening for the second time. Then stop the first electric push rod (3), the first electric slide rail (4), and the second electric slide rail (7) and start the longitudinal dual-axis motor (28) and the transverse dual-axis motor (31) to drive the longitudinal spline ring (29) and the transverse spline ring (32) to rotate. The longitudinal spline ring (29) and the transverse spline ring (32) respectively drive the adjacent longitudinal rubber strip (30) and the transverse rubber strip (33) to rotate. The vertical rubber strip (30) and the horizontal rubber strip (33) rotate to beat the bag opening. At this time, the first electric slide rail (4) and the second electric slide rail (7) are activated to control the support member (10) to move along the bag opening. The support member (10) drives the adjacent vertical spline ring (29) and the horizontal spline ring (32) to move through the adjacent tension springs to beat the position of the bag opening that was originally covered by the support member (10). The vertical dual-axis motor (28), the horizontal dual-axis motor (31), the first electric slide rail (4) and the second electric slide rail (7) are stopped. S4: Start the ultraviolet lamp (701) to disinfect and sterilize the inside of the bag opening, then stop the ultraviolet lamp (701) and start the first electric rotating shaft (12) to drive the adjacent adjusting plate (13) to rotate 90°, stop the first electric rotating shaft (12) and start the third electric slide rail (11), and at the same time cooperate with the first electric slide rail (4) to control the movement of the support member (10) to fold the bag into an M shape, then stop the third electric slide rail (11) and the first electric slide rail (4). S5: Start the fourth electric slide rail (14), the fifth electric slide rail (16) and the positioning motor (21) in sequence, use the positioning plate (20) to clamp the bag opening, then stop the fourth electric slide rail (14), the fifth electric slide rail (16) and the positioning motor (21) and start the second electric push rod (19) and the heat-sealing plate (18), use the heat-sealing plate (18) to heat-seal the bag opening, then stop the heat-sealing plate (18) and the second electric push rod (19) and control the second electric push rod (19), the positioning motor (21), the fifth electric slide rail (16) and the fourth electric slide rail (14) in sequence to reset the positioning plate (20) and adjacent parts, start the first electric push rod (3) and the third electric push rod (22) to drive their adjacent parts to move and reset, and finally stop the first electric push rod (3) and the third electric push rod (22).

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