A packaging bag sealing device for food processing

Abstract

The application relates to a food processing packaging bag sealing device which comprises a base, a supporting frame fixedly connected to the left top surface of the base, a lifting assembly fixedly connected to the top surface of the inner wall of the supporting frame, an upper hot melting block arranged on the lifting assembly, a first screw shaft bearing-connected to the right inner wall of the supporting frame and close to the bottom, a placing plate threadedly sleeved with the right end of the surface of the first screw shaft, and a fixing assembly arranged on the middle top surface of the placing plate. The components are cooperated with each other, the packaging bag is automatically fixed by the device in advance at a position far from the hot melting sealing position, the packaging bag is sent into the supporting frame after being fixed, the packaging bag is sealed by hot melting in the supporting frame, the operator is effectively prevented from being scalded, and the safety of the operator during work is improved.

Description

Technical Field

[0001] This application relates to the field of food processing technology, and in particular to a sealing device for packaging bags used in food processing. Background Technology

[0002] After the product is packed into a packaging bag, in order to ensure that the contents remain in the packaging bag during transportation, storage and sales and to avoid contamination and damage, the packaging container needs to be sealed. This operation is done on a sealing machine. Simply put, a sealing machine is a machine that seals the container after the product is placed inside.

[0003] Existing sealing machines typically use heat-sealing, which involves securing the packaging bag and then using a heating plate to press and heat the bag's opening. The high temperature softens and seals the opening, creating an airtight seal. However, existing sealing machines require manual handling of the bag to prevent movement, and the heating plate is usually quite hot. This operation poses a certain risk, as operators are susceptible to burns from contact with the heating plate or from its heat radiation. Summary of the Invention

[0004] The purpose of this application is to provide a sealing device for packaging bags used in food processing, so as to solve the problems mentioned in the background art.

[0005] The technical solution of this application is a sealing device for packaging bags used in food processing, including a base. A support frame is fixedly connected to the left side of the top surface of the base. A lifting assembly is fixedly connected to the top surface of the inner wall of the support frame. An upper hot melt block is provided on the lifting assembly. A first screw is bearing-connected to the right side of the inner wall of the support frame near the bottom. The right end of the first screw extends to the outside of the right side of the support frame. A placement plate is threaded onto the right end of the surface of the first screw. A fixing assembly is provided in the middle of the top surface of the placement plate. A lower hot melt block is fixedly connected to the left side of the top surface of the placement plate. A connecting plate is fixedly connected to the right side of the top surface of the base. A through hole is opened in the middle of the connecting plate. The right end bearing of the first screw is sleeved in the through hole. A frame is fixedly connected to the bottom of the right side of the connecting plate. A first motor is fixedly connected to the top surface of the frame. The shaft of the first motor is fixedly connected to the right end face of the first screw.

[0006] In one embodiment, the fixing component includes a fixing frame fixedly connected to the top surface of the placement plate, a first cylinder fixedly connected to the top surface of the inner wall of the fixing frame, and a pressure plate fixedly connected to the lower end of the first cylinder.

[0007] In one embodiment, the number of pressure plates is at least two, and the two pressure plates are arranged radially at both ends of the placement plate along the first screw.

[0008] In one embodiment, the support frame includes a plurality of heat insulation plates surrounding the upper hot melt block to reduce the heat radiation of the hot melt block.

[0009] In one embodiment, the food processing packaging bag sealing device includes a spreading component, which is disposed on the top surface of the base and located on the side of the fixing component away from the lower hot melt block along the length direction of the first screw. The spreading component is used to spread open the packaging bag to be sealed, so as to facilitate feeding the packaging bag to be sealed.

[0010] In one embodiment, the spreading assembly includes a spreading bracket and at least two fixing blocks. The spreading bracket is fixed to the base, and the at least two fixing blocks are spaced apart on the top of the spreading bracket and are used to clamp the opening of the packaging bag to be sealed.

[0011] In one embodiment, the lifting assembly includes a second motor, which is fixedly connected to the top surface of the inner wall of the support frame. The shaft of the second motor is fixedly connected to a second screw, and a threaded tube is threaded onto the surface of the second screw. A mounting plate is fixedly connected to the lower end face of the threaded tube. The upper hot melt block is fixedly connected to the bottom surface of the mounting plate. Connecting pipes are fixedly connected to the left and right sides of the top surface of the mounting plate. A connecting rod is movably sleeved in the inner cavity of each connecting pipe, and the top surface of the connecting rod is fixedly connected to the top surface of the inner wall of the support frame.

[0012] In one embodiment, pulleys are fixedly connected to the four corners of the bottom surface of the placement plate, and the pulleys are slidably connected to the top surface of the base.

[0013] In one embodiment, at least one of the heat insulation panels is fixedly nested with a first glass panel near the bottom; and / or the fixing frame is fixedly nested with a second glass panel.

[0014] In one embodiment, the placement plate has a movable hole extending through the length of the first screw, and a guide rod is movably sleeved in the movable hole. The left end face of the guide rod is fixedly connected to the right side of the inner wall of the support frame, and the right end face of the guide rod is fixedly connected to the left side of the connecting plate.

[0015] In one embodiment, universal wheels are fixedly connected to the four corners of the base bottom surface, a second cylinder is fixedly connected to the center of the base bottom surface, and a positioning plate is fixedly connected to the bottom surface of the second cylinder.

[0016] The beneficial effects provided by this application are:

[0017] Through the cooperation of various components, the packaging bag can be heat-sealed without the need for manual hand-holding. The packaging bag sealing device can automatically press down and fix the packaging bag in advance at a position away from the heat-sealing point, and after fixing, send the packaging bag into the support frame, so that the packaging bag is heat-sealed inside the support frame. This effectively avoids burns to the operator and improves the safety of the operator during work. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a front view of a sealing device provided in one embodiment of this application;

[0020] Figure 2 This is a main sectional view of a sealing device provided in one embodiment of this application;

[0021] Figure 3 This is a side view of the fixing component provided in the first embodiment of this application;

[0022] Figure 4 This is a main sectional view of the lifting assembly provided in one embodiment of this application;

[0023] Figure 5 This is a side view of the fixing component provided in the second embodiment of this application;

[0024] Figure 6 This is a side view of the fixing component provided in the third embodiment of this application;

[0025] Figure 7 This is a front view of the sealing device provided in another embodiment of this application;

[0026] Figure 8 This application provides an embodiment of the present application. Figure 2 Enlarged view of the structure at point A in the middle;

[0027] Figure 9 Provided in another embodiment of this application Figure 2 Enlarged view of the structure at point A in the middle;

[0028] Figure 10 This is a side view of the fixing component provided in the fourth embodiment of this application;

[0029] Figure 11This is a side view of the upper and lower hot melt blocks provided in one embodiment of this application.

[0030] Reference numerals: 100, Sealing device; 1, Base; 2, Support frame; 21, Heat insulation plate; 3, Lifting assembly; 31, Second motor; 32, Second screw; 33, Threaded pipe; 34, Mounting plate; 35, Connecting pipe; 36, Connecting rod; 4, Upper hot melt block; 41, Boss; 5, First screw; 6, Placement plate; 61, Movable hole; 62, Protrusion; 7, Fixing assembly; 71, Fixing frame; 72, First cylinder; 73, Pressure plate; 731, Fixing part; 732, Blocking part; 8, Lower hot melt block; 81, Groove; 9, Connecting plate; 10, Frame; 11, First motor; 12, Pulley; 13, First glass plate; 14, Second glass plate; 15, Guide rod; 16, Universal wheel; 17, Second cylinder; 18, Positioning plate; 19, Spreading assembly; 191, Spreading bracket; 192, Fixing clamp. Detailed Implementation

[0031] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this application.

[0032] The following descriptions of the embodiments are based on the accompanying illustrations and are used to illustrate specific embodiments in which this application can be implemented. The component designations used herein, such as "first," "second," etc., are merely for distinguishing the described objects and do not have any sequential or technical meaning. Unless otherwise specified, the terms "connection" and "linkage" used in this application include both direct and indirect connections (linkages). Directional terms used in this application, such as "up," "down," "front," "rear," "left," "right," "inner," "outer," "side," etc., are merely for reference to the accompanying drawings. Therefore, the use of directional terms is for better and clearer explanation and understanding of this application, and does not indicate or imply that the referred device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this application.

[0033] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joint" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising," "may include," "include," or "may include" used in this application indicate the presence of the corresponding disclosed function, operation, element, etc., and do not limit one or more other functions, operations, elements, etc. Moreover, the terms "comprising" or "include" indicate the presence of the corresponding features, number, steps, operations, elements, components, or combinations thereof disclosed in the specification, but do not exclude the presence or addition of one or more other features, number, steps, operations, elements, components, or combinations thereof, and are intended to cover non-exclusive inclusion.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application.

[0035] In one embodiment, such as Figure 1-4 As shown, a food processing packaging bag sealing device 100 includes a base 1, a support frame 2 fixedly connected to the left side of the top surface of the base 1, a lifting assembly 3 fixedly connected to the top surface of the inner wall of the support frame 2, an upper hot melt block 4 provided on the lifting assembly 3, a first screw 5 bearing connected to the right side of the inner wall of the support frame 2 near the bottom, the right end of the first screw 5 extending to the outside of the right side of the support frame 2, a placement plate 6 threadedly sleeved on the right end of the surface of the first screw 5, a fixing assembly 7 provided in the middle of the top surface of the placement plate 6, a lower hot melt block 8 fixedly connected to the left side of the top surface of the placement plate 6, a connecting plate 9 fixedly connected to the right side of the top surface of the base 1, a through hole opened in the middle of the connecting plate 9, the right end of the first screw 5 bearing sleeved in the through hole, a frame 10 fixedly connected to the bottom of the right side of the connecting plate 9, a first motor 11 fixedly connected to the top surface of the frame 10, and the shaft of the first motor 11 fixedly connected to the right end face of the first screw 5.

[0036] In this embodiment, the upper hot melt block 4 and the lower hot melt block 8 cooperate to act as a heat source, heating and melting the opening of the packaging bag to be sealed. After cooling, the packaging bag can be sealed. The lifting component 3 is used to adjust the vertical position of the upper hot melt block 4 relative to the base 1, so that when sealing is required, the upper hot melt block 4 is driven to press down on the packaging bag to improve sealing reliability, and after sealing, the upper hot melt block 4 is driven to move up to release the packaging bag. The placement plate 6 is used to support the packaging bag containing food. The first screw 5 passes through the middle of the placement plate 6 along its own length direction. The first screw 5 and the shaft of the first motor 11 are fixedly connected and cooperate to drive the placement plate 6 to move along the length direction of the first screw 5, thereby transporting the packaging bag to be sealed to the designated position for hot melt sealing. The connecting plate 9 is used to support the shaft of the first screw 5 and the first motor 11 to ensure the movement stability of the placement plate 6 and ensure sealing accuracy. Furthermore, the fixing component 7 is disposed along the length direction of the first screw 5 on the side of the lower hot melt block 8 away from the upper hot melt block 4, so as to fix the opening of the packaging bag before hot melt sealing, which is beneficial to the subsequent hot melt sealing operation.

[0037] Understandably, the sealing device 100 of this application can be sequentially divided into a heat-sealing area, a fixing area, and a feeding area along the length of the first screw 5. After the packaging bag to be sealed is filled with food on the placement plate 6 in the feeding area on the right, the opening of the packaging bag is fixed by the fixing component 7 in the fixing area, and then automatically transported to the heat-sealing area on the left. Heat-sealing is achieved by the cooperation of the upper heat-sealing block 4 and the lower heat-sealing block 8. The partitioned operation can reduce the discomfort caused by the heat radiation from the upper heat-sealing block 4 and the lower heat-sealing block 8 when manually filling food in the feeding area. That is, this application not only replaces manual fixing of the opening of the packaging bag by setting the fixing component 7, thereby avoiding burns caused by accidental contact with the upper heat-sealing block 4, but also allows operators to fill food in a position away from the heat-sealing area through partitioned operation, thereby reducing the discomfort caused to operators by the high temperature environment of the heat-sealing area. In addition, the sealing device 100 of this application has a simple structure and relatively low cost.

[0038] In one embodiment, the fixing component 7 includes a fixing frame 71, a first cylinder 72, and a pressure plate 73. The fixing frame 71 is fixedly connected to the middle of the top surface of the placement plate 6, the first cylinder 72 is disposed on the top surface of the inner wall of the fixing frame 71, and the pressure plate 73 is fixed to the lower end of the first cylinder 72 and slidably connected to the fixing frame 71 in the vertical direction. It can be understood that in this embodiment, the cooperation of these three simple structures—the fixing frame 71, the first cylinder 72, and the pressure plate 73—can reliably fix the opening of the packaging bag to the placement plate 6, thereby ensuring a sealing effect. Furthermore, based on the advantages of the first cylinder 72's driving method compared to the motor's driving method, such as lower cost, faster response speed, and larger torque output, this application, by using the first cylinder 72 to drive the pressure plate 73, can not only increase the pressing speed of the pressure plate 73 and ensure the reliability of the pressing fixation, but also further reduce the manufacturing cost of the sealing device.

[0039] For further details, please refer to [link / reference]. Figure 5 The image shows a side view of the fixing component 7 provided in the second embodiment of this application.

[0040] like Figure 1 , Figure 2 and Figure 5 As shown, in one embodiment, there are two pressure plates 73. The two pressure plates 73 are arranged radially along the first screw 5 at both ends of the placement plate 6, that is, the two pressure plates 73 are arranged perpendicular to the length of the first screw 5 on the front and rear sides of the first screw 5. When the packaging bag is placed flat on the placement plate 6, the two pressure plates 73 are located at the two side edges of the bag opening. When the two pressure plates 73 press down to fix the packaging bag, they simulate the action of a human hand pinching the two sides of the bag opening to straighten the bag opening, thereby improving the fixing effect of the bag opening and thus improving the sealing effect.

[0041] In one embodiment, along the arrangement direction of the two pressure plates 73, the distance between the two furthest sides of the two pressure plates 73 is less than the width of the placement plate 6. That is, the projections of the two pressure plates 73 in the vertical direction onto the placement plate 6 are completely contained within the placement plate 6, and the outermost sides of the two pressure plates 73 are spaced apart from the side edges of the placement plate 6. It can be understood that setting the distance between the two furthest sides of the two pressure plates 73 along the arrangement direction to be less than the width of the placement plate 6 ensures that when a large amount of food in the packaging bag overflows to the pressing and fixing position, the downward pressure of the two pressure plates 73 is relatively uniform, preventing the food in the packaging bag from being squeezed by the pressure plates 73 and splashing from between the two pressure plates 73 to the sealing position, thus affecting the sealing effect.

[0042] exist Figure 5 In one embodiment, there is one first cylinder 72, and the same first cylinder 72 is connected to two pressure plates 73 via a connecting block, thereby jointly driving the two pressure plates 73 to press down and fix the packaging bag. In contrast, Figure 6 ( Figure 6 In the embodiment shown (a side view of the fixing component 7 provided in the third embodiment of this application), there are two first cylinders 72, which are arranged radially on the front and rear sides of the first screw 5. Each first cylinder 72 is used to drive a pressure plate 73 to press down, which can improve the fixing effect on the packaging bag.

[0043] It should be noted that the number of pressure plates 73 and first cylinders 72 in the above embodiments is only an example and does not represent the number of pressure plates 73 and first cylinders 72 in other embodiments of this application. That is, the number of pressure plates 73 and first cylinders 72 in this application can be adaptively adjusted according to actual application scenarios.

[0044] In one embodiment, while ensuring that the total heat of the upper heating block 4 and the lower heating block 8 is sufficient to melt the packaging bag, the heat of the upper heating block 4 is set to be greater than that of the lower heating block 8. It is understandable that, since the upper heating block 4 is farther from the feeding area than the lower heating block 8, by setting the heat of the upper heating block 4 to be greater than that of the lower heating block 8, it is possible to ensure the packaging bag can be sealed while reducing heat transfer to the feeding area, thereby improving operator comfort.

[0045] For further details, please see the link below. Figure 1 and Figure 2 The support frame 2 of this application includes multiple heat insulation plates 21, which surround the upper hot melt block 4. Alternatively, it can be understood that the multiple heat insulation plates 21 form a receiving space, within which the upper hot melt block 4 is fixed. It is understood that in this embodiment, by setting multiple heat insulation plates 21 to surround the upper hot melt block 4, the upper hot melt block 4 is isolated, thereby blocking heat transfer from the upper hot melt block 4 and preventing heat radiation from the upper hot melt block 4 from causing discomfort to the operator.

[0046] In one embodiment, along the length of the first screw 5, a heat-insulating plate (not shown) is provided on the side of the lower hot melt block 8 opposite to the first motor 11. Heat-insulating plates can also be provided on the front and rear sides of the lower hot melt block 8 along the radial direction of the first screw 5. The heat-insulating plates are used to block heat transfer from the lower hot melt block 8, thereby further reducing the ambient temperature of the operator's working environment.

[0047] In one embodiment, at least one of the heat insulation plates 21 is embedded with a first glass plate 13 near the bottom of the base 1. By setting the first glass plate 13 as an observation window, it is convenient to observe the sealing condition of the packaging bag in the heat-melting sealing area.

[0048] In one embodiment, the fixing frame 71 is provided with a second glass plate 14 near the bottom of the placement plate 6. By setting the second glass plate 14 as an observation window, it is convenient to observe the fixing of the pressure plate 73 to the opening of the packaging bag.

[0049] Please refer to the above. Figure 1 , Figure 2 ,and Figure 4 In one embodiment, the lifting assembly 3 includes a second motor 31, which is fixedly connected to the top surface of the inner wall of the support frame 2. The shaft of the second motor 31 extends vertically and is fixedly connected to a second screw 32. A threaded tube 33 is threaded onto the surface of the second screw 32, and a mounting plate 34 is fixedly connected to the lower end face of the threaded tube 33. An upper heat-sealing block 4 is fixedly connected to the bottom surface of the mounting plate 34. When the heat-sealing process is required, the shaft of the second motor 31 rotates forward or backward, driving the second screw 32 to rotate and causing the threaded tube 33 to move vertically toward the base 1, so that the upper heat-sealing block 4 presses down to contact the opening of the packaging bag to achieve heating and melting. After melting is completed, the shaft of the second motor 31 rotates in the opposite direction, driving the second screw 32 to rotate and causing the threaded tube 33 to move vertically toward the direction away from the base 1, so that the upper heat-sealing block 4 moves upward to loosen the packaging bag. Understandably, using a motor to drive the upper hot melt block 4 to press down and heat it can ensure the accuracy of the heating position, thereby improving the sealing effect.

[0050] Specifically, in one embodiment, connecting pipes 35 are fixedly connected to both the left and right sides of the top surface of the mounting plate 34. A connecting rod 36 is movably sleeved within the inner cavity of each connecting pipe 35, and the top surface of the connecting rod 36 is fixedly connected to the top surface of the inner wall of the support frame 2. It can be understood that the connecting pipes 35 and connecting rods 36, which are slidably connected between the top surface of the inner wall of the support frame 2 and the mounting plate 34, serve as a guide structure, which can reduce the vibration of the shaft of the second motor 31, thereby ensuring the stability of movement and improving the sealing effect.

[0051] In one embodiment, pulleys 12 are provided between the placement plate 6 and the base 1. Specifically, pulleys 12 are fixedly connected to the four corners of the bottom surface of the placement plate 6, and the pulleys 12 are slidably connected to the top surface of the base 1. It can be understood that the installation of pulleys 12 can reduce the frictional resistance between the placement plate 6 and the base 1, making the left and right movement of the placement plate 6 smoother.

[0052] In another embodiment, multiple rollers (not shown in the figure) can be provided on the top surface of the base 1. The multiple rollers are spaced apart along the length of the first screw 5 and all extend in a direction perpendicular to the length of the first screw 5. The multiple rollers can rotate relative to the base 1, and the placement plate 6 is disposed on the rollers. When the placement plate 6 moves along the length of the first screw 5 under the drive of the first motor 11, the multiple rollers rolling in the same direction can transport the placement plate 6 to a designated position. It is understood that the arrangement of multiple rollers can also reduce the frictional resistance between the placement plate 6 and the base 1.

[0053] Please see back Figure 3 In one embodiment, the placement plate 6 of this application is provided with a movable hole 61, which extends through the placement plate 6 along the length direction of the first screw 5. A guide rod 15 is sleeved inside the movable hole 61. The opposite ends of the guide rod 15 are fixedly connected to the support frame 2 and the connecting plate, respectively. Specifically, the left end face of the guide rod 15 is fixedly connected to the right side of the inner wall of the support frame 2, and the right end face of the guide rod 15 is fixedly connected to the left side of the connecting plate 9. It can be understood that by setting the guide rod 15 to pass through the placement plate 6, the placement plate 6 is restricted to prevent it from shaking as the first screw 5 rotates, thus ensuring the stability of the movement of the placement plate 6.

[0054] Please see back Figure 1 In one embodiment, the bottom surface of the base 1 is provided with casters 16, and the number of casters 16 is 4. The four casters are located at the four corners of the base 1 so that the sealing device 100 of this application can move on the ground and the operator can change the position of the sealing device 100 as needed.

[0055] Furthermore, in one embodiment, the sealing device 100 of this application further includes a second cylinder 17 and a positioning plate 18. Both the second cylinder 17 and the positioning plate 18 are located on the bottom surface of the base 1. The positioning plate 18 is slidably connected to the base 1 in a vertical direction, and the second cylinder 17 is located in a vertical direction between the base 1 and the positioning plate 18, and is drively connected to the positioning plate 18. The second cylinder 17 is used to drive the positioning plate 18 to slide. When the sealing device 100 moves to a designated position, the second cylinder 17 is activated, driving the positioning plate 18 to extend vertically towards the ground to abut against the ground, thereby fixing the sealing device 100 to facilitate feeding material into the packaging bag, fixing the packaging bag, and sealing the packaging bag.

[0056] Please refer to the above. Figure 7 , Figure 7 This is a front view of the sealing device 100 provided in another embodiment of this application.

[0057] like Figure 7As shown, in one embodiment, the sealing device 100 of this application includes a spreading component 19, which is disposed on the top surface of the base 1 and located on the side of the fixing component 7 opposite to the lower hot melt block 8 along the length direction of the first screw 5. The spreading component 19 is located in the feeding area and is used to spread open the bag opening of the packaging bag to be sealed and fix it, so as to feed the packaging bag to be sealed and fill it with food.

[0058] Specifically, in one embodiment, the expansion assembly 19 of this application includes an expansion bracket 191 and two fixing blocks 192. The expansion bracket 191 is fixed to the top surface of the base 1, and the two fixing blocks 192 are arranged at intervals on the top of the expansion bracket 191. During loading, the packaging bag to be sealed can be placed on the expansion bracket 191 with the opening of the packaging bag facing upwards. The opening of the packaging bag is then held by the fixing blocks 192 to secure the packaging bag, thereby preventing the food being filled during loading from crushing the packaging bag. It should be noted that the number of fixing blocks 192 includes, but is not limited to, two.

[0059] Please refer to the above. Figure 8 , Figure 8 This application provides an embodiment of the present application. Figure 2 Enlarged view of the structure at point A in the middle.

[0060] like Figure 8 As shown, in one embodiment, the pressure plate 73 of this application includes a fixing part 731 and a blocking part 732. The fixing part 731 is arranged parallel to the placement plate 6 and is used to cooperate with the placement plate 6 to clamp and fix the packaging bag. The blocking part 732 is located on the side of the fixing part 731 away from the lower hot melt block 8 along the length direction of the first screw 5. Along the length direction of the first screw 5, the blocking part 732 extends upwardly from the fixing part 731 toward the first cylinder 72. The blocking part 732 can be used to block and push the food in the packaging bag toward the side away from the lower hot melt block 8, preventing the food in the packaging bag from slipping to the sealing position and affecting the sealing effect.

[0061] Please refer to the above. Figure 9 and Figure 10 , Figure 9 Provided in another embodiment of this application Figure 2 Enlarged view of the structure at point A in the middle; Figure 10 This is a side view of the fixing component 7 provided in the fourth embodiment of this application.

[0062] like Figure 9 and Figure 10As shown, in another embodiment, the pressure plate 73 of this application has a rack-like structure. That is, the cross-sectional shape of the pressure plate 73 along the length of the first screw 5 is a toothed cross-section, and the cross-sectional shape of the pressure plate 73 along the radial direction of the first screw 5 is a multi-tooth structure. It can be understood that, in this embodiment, by setting the pressure plate 73 to a rack-like structure, when there is a lot of food in the packaging bag, the gap between the teeth on the pressure plate 73 can accommodate some of the food, which can further prevent the food in the packaging bag from being squeezed to the sealing position and affecting the sealing effect.

[0063] Furthermore, in Figure 10 In the illustrated embodiment, the top surface of the placement plate 6 is provided with a plurality of protrusions 62. The number of protrusions 62 is the same as the number of teeth on the pressure plate 73, and the positions of the protrusions 62 correspond to the teeth of the pressure plate 73. That is, when the pressure plate 73 is pressed down onto the placement plate 6, each tooth of the pressure plate 73 presses against a protrusion 62. It can be understood that by providing protrusions 62 on the top surface of the placement plate 6 that correspond to the toothed structure of the pressure plate 73, the gaps between the plurality of protrusions 62 and the gaps between the teeth on the pressure plate 73 can be used to accommodate the food inside the packaging bag, thereby further preventing the food inside the packaging bag from being squeezed to the sealing position.

[0064] In one embodiment, the pressure plate 73 is made of an elastic material. For example, it can be made of materials such as rubber. Understandably, the pressure plate 73 made of an elastic material not only serves to secure the packaging bag but also provides cushioning to prevent excessive impact from crushing the food inside the packaging bag and splashing it to the sealing position.

[0065] Please refer to the above. Figure 11 , Figure 11 This is a side view of the upper hot melt block 4 and the lower hot melt block 8 provided in one embodiment of this application.

[0066] like Figure 11 As shown, in one embodiment, the upper hot melt block 4 of this application is provided with a plurality of protrusions 41, which are arranged at radial intervals along the first screw 5, and each protrusion 41 has a toothed structure. The lower hot melt block 8 is provided with a plurality of grooves 81, which are also arranged at radial intervals along the first screw 5. The shape of each protrusion 41 corresponds to the shape of each groove 81, and each protrusion 41 is used to extend into a groove 81, that is, each protrusion 41 can engage with a groove 81. It can be understood that providing protrusions 41 on the upper hot melt block 4 and correspondingly providing grooves 81 on the lower hot melt block 8, the engagement of the protrusions 41 and the grooves 81 can increase the heat-receiving area of ​​the bag opening of the sealed bag, thereby improving the sealing effect.

[0067] Working Principle: When in use, the food processing packaging bag sealing device 100 of this application can be moved on the ground via the casters 16. After movement, the positioning plate 18 is lowered by the second cylinder 17, causing its bottom surface to contact the ground, thereby increasing the frictional resistance of the sealing device 100 on the ground and making it difficult to move. When feeding and sealing the packaging bag, the bag is first opened and fixed to the opening bracket 191, and the bag opening is fixed using the fixing clamp 192, making it easy for the operator to fill the bag with food. After filling, the fixing clamp 192 is released, and the bag is placed on the placement plate 6. Simultaneously, the bag opening is passed through the inside of the fixing frame 71, so that the sealed position of the bag is located on the lower heat-melting block 8. Then, the first cylinder 72 is activated, pushing the pressure plate 73 downwards. The pressure plate 73 presses down on the packaging bag, making it difficult for the bag to move, thus preventing the sealing position of the packaging bag from shifting away from the lower heat-sealing block 8. Then, the first motor 11 is activated, driving the first screw 5 to rotate. The rotation of the first screw 5 causes the placement plate 6 to move to the left. After the placement plate 6 moves to the left, it enters the inside of the support frame 2, thereby moving the packaging bag into the support frame 2 and placing it below the upper heat-sealing block 4. Next, the second motor 31 is activated, driving the second screw 32 to rotate. The rotation of the second screw 32 causes the threaded tube 33 to descend. The threaded tube 33 drives the mounting plate 34 to descend, and the mounting plate 34 drives the upper heat-sealing block 4 to descend, so that the upper heat-sealing block 4 contacts the packaging bag, thereby cooperating with the lower heat-sealing block 8 to heat-seal the packaging bag. After sealing, the second motor 31 reverses, causing the upper heat-sealing block 4 to rise and reset. Then, the first motor 11 reverses, causing the placement plate 6 to move to the right, removing the packaging bag from the support frame 2. Finally, the first cylinder 72 drives the pressure plate 73 to rise and reset, allowing the sealed packaging bag to be removed from the placement plate 6. This design eliminates the need for manual hand-holding when heat-sealing the packaging bag. The sealing device 100 automatically presses and secures the packaging bag from a position away from the heat-sealing point, and then sends the packaging bag into the support frame 2 for heat-sealing inside. This effectively prevents burns to operators and improves their safety.

[0068] It should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of embodiments of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0069] In the description of this specification, references to terms such as "one embodiment," "example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0070] It should be understood that the application of this application is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims. Those skilled in the art will understand that implementing all or part of the processes of the above embodiments, and making equivalent changes according to the claims of this application, still falls within the scope of this application.

Claims

1. A sealing device for packaging bags used in food processing, characterized in that, The system includes a base, a support frame fixedly connected to the left side of the top surface of the base, a lifting assembly fixedly connected to the top surface of the inner wall of the support frame, an upper hot melt block on the lifting assembly, a first screw bearing connected to the right side of the inner wall of the support frame near the bottom, the right end of the first screw extending to the outside of the right side of the support frame, a placement plate threaded onto the right end of the surface of the first screw, a fixing assembly located in the middle of the top surface of the placement plate, a lower hot melt block fixedly connected to the left side of the top surface of the placement plate, a connecting plate fixedly connected to the right side of the top surface of the base, a through hole in the middle of the connecting plate, a bearing sleeve of the right end of the first screw within the through hole, a frame fixedly connected to the bottom of the right side of the connecting plate, and a first electric... The machine has a first motor shaft fixedly connected to the right end face of a first screw. The fixing assembly includes a fixing frame, which is fixedly connected to the top surface of the placement plate. A first cylinder is fixedly connected to the top surface of the inner wall of the fixing frame. A pressure plate is fixedly connected to the lower end of the first cylinder. The pressure plate includes a fixing part and a blocking part. The fixing part is arranged parallel to the placement plate and is used to cooperate with the placement plate to clamp and fix the packaging bag. The blocking part is located on the side of the fixing part away from the lower hot melt block along the length direction of the first screw. Along the length direction of the first screw, the blocking part extends upwardly from the fixing part toward the first cylinder. The blocking part is used to block and push the food in the packaging bag toward the side away from the lower hot melt block.

2. The food processing packaging bag sealing device as described in claim 1, characterized in that, The support frame includes multiple heat insulation plates, which surround the upper hot melt block to block the heat radiation of the hot melt block.

3. The food processing packaging bag sealing device as described in claim 2, characterized in that, At least one of the heat insulation panels is fixedly nested with a first glass plate near the bottom; and / or the fixing frame is fixedly nested with a second glass plate.

4. The food processing packaging bag sealing device according to any one of claims 1-3, characterized in that, The food processing packaging bag sealing device includes an opening component, which is located on the top surface of the base and along the length of the first screw on the side of the fixing component away from the lower hot melt block. The opening component is used to open the packaging bag to be sealed, so as to facilitate feeding the packaging bag to be sealed.

5. The food processing packaging bag sealing device as described in claim 4, characterized in that, The opening assembly includes an opening bracket and at least two fixing clamps. The opening bracket is fixed to the base, and the at least two fixing clamps are arranged at intervals on the top of the opening bracket and are used to clamp the opening of the packaging bag to be sealed.

6. The food processing packaging bag sealing device according to any one of claims 1-3, characterized in that, The lifting assembly includes a second motor, which is fixedly connected to the top surface of the inner wall of the support frame. A second screw is fixedly connected to the shaft of the second motor. A threaded tube is threaded onto the surface of the second screw. A mounting plate is fixedly connected to the lower end face of the threaded tube. The upper hot melt block is fixedly connected to the bottom surface of the mounting plate. Connecting tubes are fixedly connected to the left and right sides of the top surface of the mounting plate. A connecting rod is movably fitted into the inner cavity of each connecting tube. The top surface of the connecting rod is fixedly connected to the top surface of the inner wall of the support frame.

7. The food processing packaging bag sealing device according to any one of claims 1-3, characterized in that, Each of the four corners of the bottom surface of the placement plate is fixedly connected to a pulley, which is slidably connected to the top surface of the base.

8. The food processing packaging bag sealing device as described in claim 7, characterized in that, The placement plate has a movable hole that extends through the length of the first screw. A guide rod is movably fitted into the movable hole. The left end face of the guide rod is fixedly connected to the right side of the inner wall of the support frame, and the right end face of the guide rod is fixedly connected to the left side of the connecting plate.

Images