Sealing equipment and method for plastic packaging bag production

Abstract

The invention discloses sealing equipment and method for plastic packaging bag production, and relates to the technical field of plastic packaging bag production, the sealing equipment comprises a bottom plate, the top of the bottom plate is fixedly connected with a conveyor, the top of the conveyor is provided with a top plate, and supporting frames are fixedly connected between the four corners of the bottom of the top plate and the bottom plate; according to the sealing equipment and method for plastic packaging bag production, through the arrangement of the sealing mechanism, the surface of a plastic bag can be leveled through movement of a pressing block, wrinkles of the plastic bag are avoided, in addition, the plastic bag can be pressed and fixed through a pressing plate after being leveled, deviation of the plastic bag is avoided, and the sealing efficiency is improved. After pressing, the pressing block continues to move to drive the heat sealing device to move downwards to be tightly attached to the plastic packaging bag to seal the plastic packaging bag, operation is very convenient, the phenomena of wrinkles and deviation at the sealing position of the plastic bag can be avoided, and the sealing efficiency and the sealing effect of the plastic packaging bag are improved.

Description

Technical Field

[0001] The invention relates to the technical field of plastic packaging bag production, in particular to a sealing device and method for producing plastic packaging bags. Background Art

[0002] Plastic bags are bags made of plastic as the main raw material. They are indispensable items in people's daily lives and are often used to hold other items. They are widely used because of their advantages of being cheap, extremely light, large in capacity, and easy to store. However, due to the disadvantages of their extremely long degradation cycle and difficulty in handling, their production and use are banned in some countries. In the production process of some plastic packaging bags, it is necessary to seal their openings, which requires the use of sealing equipment for the production of plastic packaging bags.

[0003] The existing sealing equipment for plastic packaging bag production does not have the function of flattening the sealing part during the sealing process of the plastic packaging bag. Some sealing equipment only presses and fixes the sealing part of the packaging bag through a pressing structure. The sealing part of the plastic packaging bag is prone to wrinkles, which easily leads to the failure of the plastic packaging bag sealing and is not conducive to the production of plastic packaging bags.

[0004] Combining the above problems, we will find that it is difficult to avoid the above problems at the same time when using the existing sealing equipment for plastic packaging bag production on the market, and even if it can be solved, it needs to be solved through external tools, which cannot achieve the desired effect. Therefore, we propose a sealing device and method for plastic packaging bag production. Summary of the invention

[0005] The object of the present invention is to provide a sealing device and method for producing plastic packaging bags to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: A sealing device for producing plastic packaging bags, comprising a bottom plate, a conveyor is fixedly connected to the top of the bottom plate, a top plate is arranged on the top of the conveyor, support frames are fixedly connected between the four corners of the bottom of the top plate and the bottom plate, and a sealing mechanism is fixedly connected to the surface of the top plate;

[0007] The sealing mechanism comprises a sealing unit, which is located at the bottom of the top plate and is used to seal and flatten the plastic packaging bag;

[0008] The sealing mechanism further comprises an adjusting unit, the adjusting unit being located on the top of the top plate and being used to adjust the height of the sealing unit;

[0009] Both sides of the top of the conveyor are fixedly connected with guide components, and the guide components are used to guide the conveyed materials.

[0010] Preferably, the sealing unit includes a mounting plate, which is located at the bottom of the top plate, a lifting box is fixedly connected to the front side of the bottom of the mounting plate, a first motor is fixedly connected to the inner wall of the lifting box, the output ends on both sides of the first motor are fixedly connected to a first screw, a threaded sleeve is threadedly connected to the surface of the first screw, a pressure block is fixedly connected to the bottom of the screw sleeve, and the bottom of the pressure block passes through the bottom of the lifting box.

[0011] Preferably, the bottom of the back side of the lifting box is fixedly connected to a support plate, and a first lifting plate is arranged on the top of the support plate, and first trapezoidal blocks are fixedly connected to both sides of the top of the first lifting plate, and the top of the first trapezoidal block contacts a first pressure rod, and the front end of the first pressure rod passes through the lifting box and is fixedly connected to the screw sleeve, and a plurality of springs are fixedly connected between the bottom of the first lifting plate and the support plate from left to right in sequence, and first lifting rods are fixedly connected to both sides of the bottom of the first lifting plate, and the bottom of the first lifting rods passes through the bottom of the support plate, and a pressure plate is fixedly connected between the bottoms of the two first lifting rods.

[0012] The top of described second sprocket wheel is equipped with a toothed plate, and the toothed plate is connected with the toothed plate at two opposite ends thereof of the sprocket wheel, the lower ends of described toothed plate are equipped with toothed plates, and the toothed plate is connected with the toothed plate at two opposite ends thereof of the sprocket wheel.

[0013] Preferably, one end of the first screw rod away from the first motor is fixedly connected to the inner wall of the lifting box via a bearing, and the threads on the surfaces of the two first screw rods are opposite.

[0014] Preferably, the adjusting unit includes an adjusting box, the bottom of the adjusting box is fixedly connected to the top of the top plate, the back of the adjusting box is fixedly connected to a second motor, the output end of the second motor passes through the inner cavity of the adjusting box and is fixedly connected to a turntable, the front side of the turntable is fixedly connected to a rotating block, the surface of the rotating block is provided with a lifting shell, both sides of the lifting shell are fixedly connected to the lifting blocks, the opposite sides of the two lifting blocks pass through the outside of the adjusting box and are fixedly connected to the adjusting blocks, the front and rear sides of the bottom of the adjusting block are fixedly connected to adjusting rods, and the bottom of the adjusting rod passes through the top plate and is fixedly connected to the mounting plate.

[0015] Preferably, the guide assembly comprises a mounting block, the bottom of which is fixedly connected to the conveyor, a guide shell is provided on one side of the mounting block, and the inner wall of the guide shell is rotatably connected to a guide roller via a rotating shaft.

[0016] Preferably, one side of the guide housing is rotatably connected to a second screw rod via a bearing, and one end of the second screw rod penetrates to the outside of the mounting block and is fixedly connected to a hand wheel.

[0017] Preferably, one side of the guide shell and the front and rear sides of the mounting block are fixedly connected with a positioning frame, a positioning sleeve is sleeved on the surface of the positioning frame, and the bottom of the positioning sleeve is fixedly connected to the conveyor.

[0018] A method for using a sealing device for producing plastic packaging bags, comprising the following steps:

[0019] S1. The plastic packaging bag can be transported by the conveyor. The second screw can be rotated by the cooperation of the hand wheel. The rotation of the second screw can drive the guide shell to move. The positions of the guide shell and the guide roller can be adjusted to guide the packaging bag during the conveying process of the conveyor to avoid deviation, thereby ensuring that the packaging bag will not tilt during sealing, thereby improving the sealing efficiency and sealing effect of the plastic packaging bag;

[0020] S2. Turning on the second motor can drive the turntable and the rotating block to rotate. The rotation of the rotating block can drive the lifting shell to adjust the height. The lifting shell can drive the mounting plate to move downward through the cooperation of the lifting block, the adjusting block and the adjusting rod. At this time, the two pressing blocks are in the middle position. The mounting plate drives the lifting box to move downward until the lifting box drives the bottom of the pressing block to contact the plastic packaging bag.

[0021] S3. Controlling the first motor to start can drive the first screw to rotate. The rotation of the first screw can drive the two screw sleeves to move away from each other. The screw sleeves drive the connecting blocks, the first pressure rod and the pressure block on both sides to move away from each other. The two pressure blocks move away from each other and move on the surface of the plastic packaging bag, so as to level the material packaging bag. The first pressure rod continues to move and contact the first trapezoidal block, squeezing the first trapezoidal block to move downward. The first trapezoidal block drives the pressure plate to move downward through the cooperation of the first lifting plate and the first lifting rod, gradually approaching the plastic packaging bag until it is tightly attached.

[0022] S4. The screw sleeve continues to move, which drives the second pressure rod to squeeze the second trapezoidal block through the cooperation of the pressure block, so that the second trapezoidal block moves downward. The second trapezoidal block drives the heat sealer to move downward and gradually approach the plastic packaging bag through the cooperation of the second lifting plate and the second lifting rod until it is close to the plastic packaging bag. After the plastic packaging bag is flattened and pressed, the plastic packaging bag can be sealed by the heat sealer to avoid wrinkles or deviations in the plastic packaging bag when sealing.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The present invention provides a sealing mechanism, wherein the surface of the plastic bag can be leveled by moving the pressing block to avoid wrinkles. In addition, after leveling, the plastic bag can be pressed and fixed by the pressing plate to avoid deviation. After pressing, the pressing block continues to move to drive the heat sealer to move downward and close to the plastic packaging bag to seal it. The operation is very convenient, wrinkles and deviations can be avoided at the sealing portion of the plastic bag, and the sealing efficiency and sealing effect of the plastic packaging bag can be improved.

[0025] 2. The present invention provides a guide component to guide the packaging bag during the conveyor conveying the packaging bag to avoid deviation, thereby ensuring that the packaging bag will not tilt during sealing, thereby improving the sealing efficiency and sealing effect of the plastic packaging bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 is a top view of the guide assembly in the present invention;

[0028] Figure 3 It is a structural schematic diagram of the sealing mechanism in the present invention;

[0029] Figure 4 It is a left sectional view of the adjustment unit in the present invention;

[0030] Figure 5 It is a structural schematic diagram of the sealing unit in the present invention;

[0031] Figure 6 It is a rear cross-sectional view of the lifting box in the present invention;

[0032] Figure 7 It is a schematic structural diagram of the heat sealer in the present invention.

[0033] In the figure: 1, bottom plate; 11, conveyor; 12, top plate; 13, support frame; 2, sealing mechanism; 21, sealing unit; 2101, mounting plate; 2102, lifting box; 2103, first motor; 2104, first screw rod; 2105, screw sleeve; 2106, pressing block; 2107, supporting plate; 2108, first lifting plate; 2109, first trapezoidal block; 2110, first pressure rod; 2111, spring; 2112, first lifting rod; 2113, pressing plate; 2114, vertical plate; 2115, sliding rod; 2116, sliding sleeve; 2117, second pressure rod; 2118, connecting block; 2 119. Second trapezoidal block; 2120. Second lifting plate; 2121. Second lifting rod; 2122. Heat sealer; 2123. Limit telescopic rod; 2124. Tension spring; 22. Adjustment unit; 2201. Adjustment box; 2202. Second motor; 2203. Turntable; 2204. Rotating block; 2205. Lifting shell; 2206. Lifting block; 2207. Adjustment block; 2208. Adjustment rod; 3. Guide assembly; 3001. Mounting block; 3002. Guide shell; 3003. Guide roller; 3004. Second screw; 3005. Hand wheel; 3006. Positioning frame; 3007. Positioning sleeve. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Example 1: Please refer to Figure 1-Figure 7 The present invention provides a technical solution: a sealing device for producing plastic packaging bags, comprising a bottom plate 1, a conveyor 11 is fixedly connected to the top of the bottom plate 1, a top plate 12 is arranged on the top of the conveyor 11, a support frame 13 is fixedly connected between the four corners of the bottom of the top plate 12 and the bottom plate 1, and a sealing mechanism 2 is fixedly connected to the surface of the top plate 12;

[0036] The sealing mechanism 2 includes a sealing unit 21, which is located at the bottom of the top plate 12 and is used to seal and flatten the plastic packaging bag;

[0037] The sealing mechanism 2 further includes an adjusting unit 22 , which is located on the top of the top plate 12 and is used to adjust the height of the sealing unit 21 .

[0038] As a further limitation of the sealing mechanism 2 of the present invention, the sealing unit 21 includes a mounting plate 2101, which is located at the bottom of the top plate 12, and a lifting box 2102 is fixedly connected to the front side of the bottom of the mounting plate 2101, and a first motor 2103 is fixedly connected to the inner wall of the lifting box 2102. The model of the first motor 2103 is a BX-24 dual-axis motor, and the output ends on both sides of the first motor 2103 are fixedly connected to the first screw 2104, and the surface of the first screw 2104 is threadedly connected to a screw sleeve 2105, and the bottom of the screw sleeve 2105 is fixedly connected to a pressing block 2106, and the bottom of the pressing block 2106 passes through the bottom of the lifting box 2102. By setting the pressing block 2106, it can be used to level the plastic packaging bag, and by setting the first motor 2103, it can be used to drive the first screw 2104 to rotate.

[0039] The bottom of the back of the lifting box 2102 is fixedly connected to a support plate 2107, and a first lifting plate 2108 is arranged on the top of the support plate 2107. Both sides of the top of the first lifting plate 2108 are fixedly connected to first trapezoidal blocks 2109. The top of the first trapezoidal block 2109 contacts a first pressure rod 2110. The front end of the first pressure rod 2110 penetrates the lifting box 2102 and is fixedly connected to the screw sleeve 2105. The bottom of the first lifting plate 2108 and the support plate 2107 are fixedly connected in sequence from left to right. A spring 2111 is provided, and first lifting rods 2112 are fixedly connected to both sides of the bottom of the first lifting plate 2108. The bottom of the first lifting rods 2112 penetrates through the bottom of the support plate 2107. A pressing plate 2113 is fixedly connected between the bottoms of the two first lifting rods 2112. By providing the spring 2111, the first lifting plate 2108 can be easily moved upward for resetting. By providing the first pressing rod 2110, it can be used to squeeze the first trapezoidal block 2109 and drive the first trapezoidal block 2109 to move downward.

[0040] Both sides of the top of the mounting plate 2101 are fixedly connected with vertical plates 2114, a sliding bar 2115 is fixedly connected between the two vertical plates 2114, both sides of the surface of the sliding bar 2115 are sleeved with sliding sleeves 2116, the front side of the sliding sleeve 2116 is fixedly connected with a second pressure rod 2117, the front side of the second pressure rod 2117 is fixedly connected with a connecting block 2118, the bottom of the connecting block 2118 passes through the mounting plate 2101 and the lifting box 2102 in sequence and is fixedly connected to the screw sleeve 2105, the bottom of the second pressure rod 2117 contacts with a second trapezoidal block 2119, a second lifting plate 2120 is fixedly connected between the bottoms of the two second trapezoidal blocks 2119, both sides of the bottom of the second lifting plate 2120 are fixedly connected with second lifting rods 2121, the bottom of the second lifting rod 2121 passes through to A heat sealer 2122 is fixedly connected between the bottom of the mounting plate 2101 and the bottom of the two second lifting rods 2121. A plurality of limiting telescopic rods 2123 are fixedly connected between the top of the heat sealer 2122 and the mounting plate 2101 from left to right. A tension spring 2124 is sleeved on the surface of the limiting telescopic rod 2123. The top and bottom of the tension spring 2124 are respectively fixedly connected to the mounting plate 2101 and the heat sealer 2122. By arranging the vertical plate 2114, it can be used to fix the sliding rod 2115. By arranging the sliding rod 2115 and the sliding sleeve 2116, the moving range of the second pressing rod 2117 can be limited. By arranging the heat sealer 2122, it can be used to seal the plastic packaging bag. By arranging the tension spring 2124, the heat sealer 2122 can be easily moved upward for resetting.

[0041] One end of the first screw 2104 away from the first motor 2103 is fixedly connected to the inner wall of the lifting box 2102 through a bearing. The threads on the surfaces of the two first screws 2104 are opposite. By setting a bearing, the rotation of the first screw 2104 can be facilitated. By setting opposite threads, the two screw sleeves 2105 can be facilitated to move away from or approach each other.

[0042] The adjusting unit 22 includes an adjusting box 2201, the bottom of the adjusting box 2201 is fixedly connected to the top of the top plate 12, the back of the adjusting box 2201 is fixedly connected to a second motor 2202, the output end of the second motor 2202 passes through the inner cavity of the adjusting box 2201 and is fixedly connected to a turntable 2203, the front side of the turntable 2203 is fixedly connected to a rotating block 2204, the surface of the rotating block 2204 is sleeved with a lifting shell 2205, both sides of the lifting shell 2205 are fixedly connected to lifting blocks 2206, and the opposite sides of the two lifting blocks 2206 pass through the outside of the adjusting box 2201 and are fixedly connected to the adjusting The front and rear sides of the bottom of the node block 2207 and the adjusting block 2207 are fixedly connected with an adjusting rod 2208. The bottom of the adjusting rod 2208 passes through the top plate 12 and is fixedly connected to the mounting plate 2101. By setting the second motor 2202, it can be used to drive the turntable 2203 to rotate. By turning on the second motor 2202, the turntable 2203 and the rotating block 2204 can be driven to rotate. The rotation of the rotating block 2204 can drive the lifting shell 2205 to adjust the height. The lifting shell 2205 can drive the mounting plate 2101 to adjust the height through the cooperation of the lifting block 2206, the adjusting block 2207 and the adjusting rod 2208.

[0043] The specific implementation of this embodiment is as follows: turning on the second motor 2202 can drive the turntable 2203 and the rotating block 2204 to rotate, and the rotation of the rotating block 2204 can drive the lifting shell 2205 to adjust the height, and the lifting shell 2205 can drive the mounting plate 2101 to move downward through the cooperation of the lifting block 2206, the adjusting block 2207 and the adjusting rod 2208. At this time, the two pressing blocks 2106 are in the middle position, and the mounting plate 2101 drives the lifting box 2102 to move downward until the lifting box 2102 drives the bottom of the pressing block 2106 to contact the plastic packaging bag, and controlling the first motor 2103 to start can drive the first screw rod 2104 to rotate, and the rotation of the first screw rod 2104 can drive the two screw sleeves 2105 to move away from each other, and the screw sleeves 2105 drive the connecting blocks 2118, the first pressing rod 2110 and the pressing block 2106 on both sides to move away from each other. When the two pressing blocks 2106 move away from each other, they will be in the plastic packaging bag. The surface moves, and the material packaging bag can be leveled. The first pressing rod 2110 continues to move and contacts the first trapezoidal block 2109, squeezing the first trapezoidal block 2109 to make it move downward. The first trapezoidal block 2109 drives the pressing plate 2113 to move downward and gradually approach the plastic packaging bag through the cooperation of the first lifting plate 2108 and the first lifting rod 2112 until it is tightly attached. The screw sleeve 2105 continues to move and drives the second pressing rod 2117 to squeeze the second trapezoidal block 2119 through the cooperation of the pressing block 2106, so that the second trapezoidal block 2119 moves downward. The second trapezoidal block 2119 drives the heat sealer 2122 to move downward and gradually approach the plastic packaging bag until it is tightly attached through the cooperation of the second lifting plate 2120 and the second lifting rod 2121. After the plastic packaging bag is leveled and pressed, the plastic packaging bag can be sealed by the heat sealer 2122 to avoid wrinkles or deviations in the plastic packaging bag when sealing.

[0044] Example 2: Please refer to Figure 1-Figure 7 The present invention provides a technical solution: a sealing device for producing plastic packaging bags. The present invention makes corresponding improvements to the technical problems mentioned in the background technology. Both sides of the top of the conveyor 11 are fixedly connected with guide components 3, and the guide components 3 are used to guide the conveyed materials.

[0045] As a further limitation of the guide component 3 of the present invention, the guide component 3 includes a mounting block 3001, the bottom of the mounting block 3001 is fixedly connected to the conveyor 11, a guide shell 3002 is provided on one side of the mounting block 3001, and the inner wall of the guide shell 3002 is rotatably connected to a guide roller 3003 via a rotating shaft. By providing the guide roller 3003, it can be used to guide the material.

[0046] One side of the guide shell 3002 is rotatably connected to a second screw rod 3004 via a bearing. One end of the second screw rod 3004 passes through the outside of the mounting block 3001 and is fixedly connected to a hand wheel 3005. By providing the hand wheel 3005, the user can easily rotate the second screw rod 3004.

[0047] A positioning frame 3006 is fixedly connected to one side of the guide shell 3002 and the front and rear sides of the mounting block 3001. A positioning sleeve 3007 is provided on the surface of the positioning frame 3006. The bottom of the positioning sleeve 3007 is fixedly connected to the conveyor 11. By setting the positioning sleeve 3007, the moving range of the positioning frame 3006 can be limited. By setting the positioning frame 3006 and the positioning sleeve 3007, the stability of the movement of the guide shell 3002 can be improved.

[0048] The specific implementation of this embodiment is as follows: the plastic packaging bags can be transported by the conveyor 11, the second screw 3004 can be rotated by the cooperation of the hand wheel 3005, the rotation of the second screw 3004 can drive the guide shell 3002 to move, and the positions of the guide shell 3002 and the guide roller 3003 can be adjusted. The packaging bags can be guided during the process of being transported by the conveyor 11 to avoid their deviation, thereby ensuring that the packaging bags will not tilt during sealing, thereby improving the sealing efficiency and sealing effect of the plastic packaging bags.

[0049] Example 3: Please refer to Figure 1-Figure 7 The present invention provides a technical solution: a method for using a sealing device for producing plastic packaging bags, comprising the following steps:

[0050] S1. The plastic packaging bag can be transported by the conveyor 11. The second screw 3004 can be rotated by the cooperation of the hand wheel 3005. The rotation of the second screw 3004 can drive the guide shell 3002 to move. The positions of the guide shell 3002 and the guide roller 3003 can be adjusted to guide the packaging bag during the conveying process of the conveyor 11 to avoid the deviation of the packaging bag, thereby ensuring that the packaging bag will not tilt during sealing, thereby improving the sealing efficiency and sealing effect of the plastic packaging bag;

[0051] S2. Turning on the second motor 2202 can drive the turntable 2203 and the rotating block 2204 to rotate. The rotating block 2204 can drive the lifting shell 2205 to adjust the height. The lifting shell 2205 can drive the mounting plate 2101 to move downward through the cooperation of the lifting block 2206, the adjusting block 2207 and the adjusting rod 2208. At this time, the two pressing blocks 2106 are in the middle position. The mounting plate 2101 drives the lifting box 2102 to move downward until the lifting box 2102 drives the bottom of the pressing block 2106 to contact the plastic packaging bag;

[0052] S3. Control the first motor 2103 to start and drive the first screw 2104 to rotate. The rotation of the first screw 2104 can drive the two screw sleeves 2105 to move away from each other. The screw sleeves 2105 drive the connecting blocks 2118, the first pressure rod 2110 and the pressure block 2106 on both sides to move away from each other. The two pressure blocks 2106 move away from each other and move on the surface of the plastic packaging bag, so as to level the material packaging bag. The first pressure rod 2110 continues to move and contact the first trapezoidal block 2109, squeezing the first trapezoidal block 2109 to move downward. The first trapezoidal block 2109 drives the pressure plate 2113 to move downward and gradually approach the plastic packaging bag through the cooperation of the first lifting plate 2108 and the first lifting rod 2112 until it is close to the plastic packaging bag.

[0053] S4. The screw sleeve 2105 continues to move, which will drive the second pressure rod 2117 to squeeze the second trapezoidal block 2119 through the cooperation of the pressure block 2106, so that the second trapezoidal block 2119 moves downward. The second trapezoidal block 2119 drives the heat sealer 2122 to move downward and gradually approach the plastic packaging bag until it is close to the plastic packaging bag through the cooperation of the second lifting plate 2120 and the second lifting rod 2121. After the plastic packaging bag is flattened and pressed, the plastic packaging bag can be sealed by the heat sealer 2122 to avoid wrinkles or deviations in the plastic packaging bag when sealing.

[0054] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sealing device for producing plastic packaging bags, comprising a bottom plate (1), characterized in that: The top of the bottom plate (1) is fixedly connected to a conveyor (11), a top plate (12) is arranged on the top of the conveyor (11), support frames (13) are fixedly connected between the four corners of the bottom of the top plate (12) and the bottom plate (1), and a sealing mechanism (2) is fixedly connected to the surface of the top plate (12); The sealing mechanism (2) comprises a sealing unit (21), the sealing unit (21) is located at the bottom of the top plate (12), and the sealing unit (21) is used to seal and flatten the plastic packaging bag; The sealing mechanism (2) further comprises an adjusting unit (22), wherein the adjusting unit (22) is located on the top of the top plate (12), and the adjusting unit (22) is used to adjust the height of the sealing unit (21); Both sides of the top of the conveyor (11) are fixedly connected with guide components (3), and the guide components (3) are used to guide the conveyed materials.

2. A sealing device for producing plastic packaging bags according to claim 1, characterized in that: The sealing unit (21) comprises a mounting plate (2101), wherein the mounting plate (2101) is located at the bottom of the top plate (12), a lifting box (2102) is fixedly connected to the front side of the bottom of the mounting plate (2101), a first motor (2103) is fixedly connected to the inner wall of the lifting box (2102), output ends on both sides of the first motor (2103) are fixedly connected to first screw rods (2104), a threaded sleeve (2105) is threadedly connected to the surface of the first screw rod (2104), a pressing block (2106) is fixedly connected to the bottom of the threaded sleeve (2105), and the bottom of the pressing block (2106) passes through the bottom of the lifting box (2102).

3. A sealing device for producing plastic packaging bags according to claim 2, characterized in that: The bottom of the back side of the lifting box (2102) is fixedly connected with a support plate (2107), and the top of the support plate (2107) is provided with a first lifting plate (2108), and both sides of the top of the first lifting plate (2108) are fixedly connected with first trapezoidal blocks (2109), and the top of the first trapezoidal block (2109) contacts with a first pressure rod (2110), and the front end of the first pressure rod (2110) passes through the lifting box (2102) and is fixedly connected to the screw sleeve (2105), and a plurality of springs (2111) are fixedly connected from left to right between the bottom of the first lifting plate (2108) and the support plate (2107), and both sides of the bottom of the first lifting plate (2108) are fixedly connected with first lifting rods (2112), and the bottom of the first lifting rods (2112) passes through the bottom of the support plate (2107), and a pressure plate (2113) is fixedly connected between the bottoms of the two first lifting rods (2112).

4. The sealing device for producing plastic packaging bags according to claim 2, characterized in that: Both sides of the top of the mounting plate (2101) are fixedly connected with vertical plates (2114), a sliding rod (2115) is fixedly connected between the two vertical plates (2114), both sides of the surface of the sliding rod (2115) are sleeved with sliding sleeves (2116), the front side of the sliding sleeve (2116) is fixedly connected with a second pressure rod (2117), the front side of the second pressure rod (2117) is fixedly connected with a connecting block (2118), the bottom of the connecting block (2118) passes through the mounting plate (2101) and the lifting box (2102) in sequence and is fixedly connected to the screw sleeve (2105), the bottom of the second pressure rod (2117) contacts with a second trapezoidal block (2119), the bottoms of the two second trapezoidal blocks (2119) A second lifting plate (2120) is fixedly connected between the two sides of the bottom of the second lifting plate (2120), and second lifting rods (2121) are fixedly connected on both sides of the bottom of the second lifting plate (2120), and the bottom of the second lifting rod (2121) passes through the bottom of the mounting plate (2101), and a heat sealer (2122) is fixedly connected between the bottoms of the two second lifting rods (2121), and a plurality of limiting telescopic rods (2123) are fixedly connected between the top of the heat sealer (2122) and the mounting plate (2101) from left to right in sequence, and a tension spring (2124) is sleeved on the surface of the limiting telescopic rod (2123), and the top and bottom of the tension spring (2124) are respectively fixedly connected to the mounting plate (2101) and the heat sealer (2122).

5. The sealing device for producing plastic packaging bags according to claim 2, characterized in that: One end of the first screw rod (2104) away from the first motor (2103) is fixedly connected to the inner wall of the lifting box (2102) via a bearing, and the threads on the surfaces of the two first screw rods (2104) are opposite.

6. The sealing device for producing plastic packaging bags according to claim 1, characterized in that: The regulating unit (22) comprises an regulating box (2201), the bottom of the regulating box (2201) is fixedly connected to the top of the top plate (12), the back of the regulating box (2201) is fixedly connected to a second motor (2202), the output end of the second motor (2202) passes through the inner cavity of the regulating box (2201) and is fixedly connected to a rotating disk (2203), the front side of the rotating disk (2203) is fixedly connected to a rotating block (2204), and the rotating block (2204) A lifting shell (2205) is sleeved on the surface of the lifting shell (2205), and lifting blocks (2206) are fixedly connected to both sides of the lifting shell (2205), and the opposite sides of the two lifting blocks (2206) penetrate to the outside of the adjustment box (2201) and are fixedly connected to the adjustment blocks (2207), and the front and rear sides of the bottom of the adjustment blocks (2207) are fixedly connected to the adjustment rod (2208), and the bottom of the adjustment rod (2208) penetrates the top plate (12) and is fixedly connected to the mounting plate (2101).

7. The sealing device for producing plastic packaging bags according to claim 1, characterized in that: The guide assembly (3) comprises a mounting block (3001), the bottom of which is fixedly connected to the conveyor (11), a guide shell (3002) is provided on one side of the mounting block (3001), and the inner wall of the guide shell (3002) is rotatably connected to a guide roller (3003) via a rotating shaft.

8. The sealing device for producing plastic packaging bags according to claim 7, characterized in that: One side of the guide housing (3002) is rotatably connected to a second screw rod (3004) via a bearing, and one end of the second screw rod (3004) penetrates the outside of the mounting block (3001) and is fixedly connected to a hand wheel (3005).

9. The sealing device for producing plastic packaging bags according to claim 7, characterized in that: A positioning frame (3006) is fixedly connected to one side of the guide shell (3002) and the front and rear sides of the mounting block (3001). A positioning sleeve (3007) is sleeved on the surface of the positioning frame (3006). The bottom of the positioning sleeve (3007) is fixedly connected to the conveyor (11).

10. A method for using a sealing device for producing plastic packaging bags according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. The plastic packaging bag can be transported by the conveyor (11). The second screw (3004) can be rotated by the cooperation of the hand wheel (3005). The rotation of the second screw (3004) can drive the guide shell (3002) to move. The positions of the guide shell (3002) and the guide roller (3003) can be adjusted to guide the packaging bag during the process of being transported by the conveyor (11) to avoid the packaging bag from being deflected, thereby ensuring that the packaging bag will not be tilted during sealing, thereby improving the sealing efficiency and sealing effect of the plastic packaging bag; S2. Turning on the second motor (2202) can drive the turntable (2203) and the rotating block (2204) to rotate. The rotation of the rotating block (2204) can drive the lifting shell (2205) to adjust the height. The lifting shell (2205) can drive the mounting plate (2101) to move downward through the cooperation of the lifting block (2206), the adjusting block (2207) and the adjusting rod (2208). At this time, the two pressing blocks (2106) are in the middle position. The mounting plate (2101) drives the lifting box (2102) to move downward until the lifting box (2102) drives the bottom of the pressing block (2106) to contact the plastic packaging bag; S3, control the first motor (2103) to start and drive the first screw (2104) to rotate, the rotation of the first screw (2104) can drive the two screw sleeves (2105) to move away from each other, the screw sleeves (2105) drive the connecting blocks (2118), the first pressure rod (2110) and the pressure block (2106) on both sides to move away from each other, the two pressure blocks (2106) move away from each other and move on the surface of the plastic packaging bag, and can level the material packaging bag, the first pressure rod (2110) continues to move and contact the first trapezoidal block (2109), squeezes the first trapezoidal block (2109) to move downward, the first trapezoidal block (2109) drives the pressure plate (2113) to move downward through the cooperation of the first lifting plate (2108) and the first lifting rod (2112), gradually approaches the plastic packaging bag until it is tightly attached; S4. The screw sleeve (2105) continues to move and drives the second pressure rod (2117) to squeeze the second trapezoidal block (2119) through the cooperation of the pressure block (2106), so that the second trapezoidal block (2119) moves downward. The second trapezoidal block (2119) drives the heat sealer (2122) to move downward gradually close to the plastic packaging bag through the cooperation of the second lifting plate (2120) and the second lifting rod (2121) until it is tightly attached. After the plastic packaging bag is flattened and pressed, the plastic packaging bag can be sealed by the heat sealer (2122) to avoid wrinkles or deviations in the plastic packaging bag when it is sealed.

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