A food packaging bag making machine pressing equipment

Abstract

The present invention relates to the technical field of packaging bag production, and specifically to a pressing device for a food packaging bag making machine, comprising a bracket, wherein a pressing component is arranged inside the bracket, and the pressing component comprises four slides, two steel rolls, a telescopic motor, a lifting frame, two sliders and two steel pipes, and a conductive component is arranged on the bracket, and the conductive component comprises a power supply, a wire, a metal shell, a bent pipe and a rotating rod, and an air suction component is arranged on the bracket, and the air suction component comprises a fan, a fixed pipe, a telescopic pipe, an electromagnet, an arc block and an iron block, and an adjustment component and a wiping component are also arranged on the bracket; the present invention can produce packaging bags using composite paper, so that the size of the packaging bags can be easily adjusted during the production process of the packaging bags, and the produced packaging bags do not contain components such as glue, and therefore will not contaminate the food packaged therein.

Description

Technical Field

[0001] The invention relates to the technical field of packaging bag production, in particular to pressing equipment of a food packaging bag making machine. Background Art

[0002] There are two main types of food packaging bags: plastic bags and paper bags. For puffed foods, in order to prevent the food in the bag from being squeezed, plastic bags usually need to be inflated. For some relatively hard foods that do not need to be too worried about being squeezed, paper bags can be used for packaging. Paper bags themselves have a certain hardness, and because they do not need to be inflated, the volume of the packaging is reduced, which is conducive to transportation.

[0003] The patent with the publication number CN117207599A discloses a paper bag production equipment, and its processing steps are as follows: unwinding; bottom gluing, using water-based heat-sealing glue to intermittently gluing on the roll paper, forming equidistant transverse glue strips on the roll paper; drying, drying the transverse glue strips to make them lose their stickiness; side gluing, continuously gluing one side of the roll paper; bag body forming, the two sides of the roll paper successively pass around the lower template, side plug plate, and upper template of the tube-forming component, and finally cover the upper template, and the glued side of the roll paper covers the other side, and the two are bonded to form a tube; bottom forming, hot pressing the bottom glued part, the transverse glue strips restore stickiness, and the upper and lower layers of the bag body are bonded to form the bottom of the bag body; unit bag body, the cutting mechanism cuts the continuous bag body into unit bag bodies. Compared with the prior art, the present invention is simpler to process, saves roll paper materials, and has low production costs.

[0004] In this patent, it is necessary to apply glue on two pieces of paper, stick the two pieces of paper together to form a bag, and then shape the bag through heat pressing. However, the paper packaging bag produced in this way will actually be divided into a three-layer structure of paper, glue, and paper at its edge. When food is packaged in this paper packaging bag, the glue layer can come into contact with the food. Therefore, the paper packaging bags produced by this equipment actually have food safety risks. Therefore, a new equipment and packaging bag are needed to solve this problem. Summary of the invention

[0005] In order to solve the above technical problems, the present invention proposes a food packaging bag making machine pressing equipment, which can use composite paper to produce packaging bags, so that the size of the packaging bags can be easily adjusted during the production process, and the produced packaging bags do not contain ingredients such as glue, and therefore will not contaminate the food packaged therein.

[0006] The technical solution to achieve the purpose of the present invention is: a pressing device for a food packaging bag making machine, including a bracket, a pressing component is arranged inside the bracket, and the pressing component includes four slides, two steel coils, a telescopic motor, a lifting frame, two sliders and two steel pipes, wherein two of the slides are slidably connected to one side of the bracket, and the other two slides are slidably connected to the other side of the bracket, and the two ends of the two steel coils are respectively wound on the two slides, the telescopic motor is fixedly connected to the bracket, the lifting frame is fixedly connected to the output shaft of the telescopic motor, the two sliders are slidably connected to the lifting frame, and the two steel pipes are respectively fixedly connected to the two sliders, and a conductive component is arranged on the bracket, and the conductive component includes a power supply, a wire, a metal shell, a bent pipe and a rotating rod. The power supply is fixedly connected to the bracket, the two wires are electrically connected to the positive and negative poles of the power supply respectively, the two metal shells are fixedly connected to the ends of the two wires respectively, the two bent pipes are fixedly connected between the two steel pipes and the two metal shells respectively, an air suction component is arranged on the bracket, the air suction component comprises a fan, a fixed pipe, a telescopic pipe, an electromagnet, an arc block and an iron block, the fan is fixedly connected to the bracket, the fixed pipe is fixedly connected to the fan, the two telescopic pipes are slidably connected to the two ends of the fixed pipe respectively, the two electromagnets are fixedly connected to the inner walls of the two metal shells respectively, the two arc blocks are slidably connected to the inner walls of the two metal shells respectively, the two iron blocks are fixedly connected to the two arc blocks respectively, and an adjustment component and a wiper are also arranged on the bracket. The pressing component also includes a slide bar, a protrusion and a compression spring. The two slide bars are respectively slidably connected to the inside of the two steel tubes, and the multiple protrusions are respectively fixedly connected to the two slide bars. The two compression springs are respectively fixedly connected between the two slide bars and the inner walls of the two steel tubes. The bottoms of the two steel tubes are each provided with multiple through holes, and the multiple protrusions are respectively located in the multiple through holes. The adjusting component includes a rotating sleeve, a prism, a shell and a clockwork spring. The four rotating sleeves are respectively rotatably connected to the four slides, and the two ends of the two steel coils are respectively fixedly connected to the four rotating sleeves. The two prisms respectively penetrate the four rotating sleeves, and the two prisms are slidably connected to the four rotating sleeves. The four shells are fixedly connected to the bracket, and the two ends of the two prisms are respectively rotatably connected to the four shells. , the four clockwork springs are respectively arranged inside the four shells, one end of the four clockwork springs is respectively fixedly connected to the two ends of the two prisms, and the other ends of the four clockwork springs are respectively fixedly connected to the inner walls of the four shells, the adjusting component also includes three bidirectional screws and chains, wherein two of the bidirectional screws are rotatably connected between the inner walls of the two sides of the bracket, the four slides are respectively threadedly connected to the two ends of the two bidirectional screws, and the chain is arranged between the two bidirectional screws, the other bidirectional screw is rotatably connected to the inside of the lifting frame, and the two slides are respectively threadedly connected to the two ends of the bidirectional screw, the adjusting component also includes a box, a knob, a worm and a worm wheel, the box is fixedly connected to the bracket, and the two worms are respectively rotatably connected to the box and the inner wall of the lifting frame,The two knobs are rotatably connected to the box and the lifting frame respectively, the two worms are fixedly connected to the two knobs respectively, the two worm wheels are meshed with the two worms respectively, and the two worm wheels are fixedly connected to the two bidirectional screws respectively. When the telescopic motor is started, the lifting frame is driven downward by the extended output shaft, and the two sliders and the steel pipes connected to the sliders will move downward. When the steel pipes move downward, the steel coils will be pulled downward together. When the plastic layers of the two composite papers are attached, the power supply is started, and the power supply will generate current in the wire. The current passes through the steel pipes and steel coils made of metal, forming a closed circuit. At this time, the internal resistance will cause the steel pipes and steel coils to heat up.

[0007] Preferably, the wiping assembly includes a tank body, a limit block, a rotating column and an seepage hole, the two tank bodies are fixedly connected to the bracket, a group of the limit blocks are fixedly connected to the inside of the two tank bodies, the two rotating columns are respectively rotatably connected between the two groups of limit blocks, the seepage hole is opened on the two rotating columns, and the two prisms pass through the two rotating columns respectively.

[0008] Preferably, the wiping assembly also includes a bottom tube, a connecting tube, a movable box and a roller, the two bottom tubes are respectively fixedly connected to the bottom of the two tank bodies, the four connecting tubes are respectively slidably connected to the two ends of the two bottom tubes, the four movable boxes are respectively fixedly connected to the four connecting tubes, and each movable box is rotatably connected to two of the rollers.

[0009] Preferably, in the wiping assembly, the two steel coils respectively pass through four movable boxes, and the two rollers in each movable box are respectively located on both sides of the steel coil.

[0010] Compared with the prior art, the present invention has the following significant advantages:

[0011] First, in the present invention, two conveyor belts can be used to convey composite paper, wherein the composite paper on one conveyor belt can be directly poured with the food to be packaged, and the composite paper on the other conveyor belt is used to cooperate with the equipment to complete the production of packaging bags. The composite paper is divided into a plastic layer and a paper layer. The equipment is moved by connecting a manipulator. When the equipment moves to the top of one of the composite papers, the telescopic motor is started, and the lifting frame is driven downward by the extended output shaft, then the two sliders and the steel pipes connected to the sliders will move downward. When the steel pipes move downward, the steel coil will be pulled downward together. Since the steel coil is wound on the rotating sleeve, and the rotating sleeve is indirectly subjected to the elastic force of the clockwork spring, the steel coil will be stretched from the two rotating sleeves while being pulled downward by the two steel pipes. At the same time, the steel coil located between the two steel pipes will be in a stretched state, and the two steel pipes will move downward with the two steel coils, gradually approaching the composite paper below.

[0012] Second, in the present invention, a fan is arranged inside the blower, and the blower can generate negative pressure inside the two steel pipes, and the holes on the plurality of protrusions will form suction. When the two steel pipes are close to the composite paper, the suction at the protrusions will suck up the composite paper. At this time, the device is moved, and the device and the sucked composite paper are moved together, so that the composite paper is sent to the top of another composite paper. Then, the composite paper sucked on the steel pipe is moved to the surface of another composite paper by using a telescopic motor, so that the two composite papers are attached to each other. The other paper is poured with the food to be packaged in advance, and the packaging bag can be directly sealed and made.

[0013] Thirdly, in the present invention, when the plastic layers of two sheets of composite paper are attached, the power supply will generate current in the wire, and the current will form a closed loop when passing through the steel pipe and the steel coil made of metal. At this time, the internal resistance will cause the steel pipe and the steel coil to heat up. The steel coil and the steel pipe are adjusted in advance in terms of material and size so that the two can maintain a similar temperature under the same current, and this temperature needs to be slightly higher than the melting point of the plastic layer on the composite paper. Therefore, after the steel pipe sends the adsorbed composite paper to the surface of another paper, the steel pipe and the steel coil are heated to melt the plastic layer. Since the shape surrounded by the steel pipe and the steel coil is a "mouth" shape, after the two sheets of composite paper are attached, only the plastic layer at the edge will melt, and the packaged food is in it. After the plastic layer melts and cools again, the plastic layers on the two sheets of composite paper will be combined together. Because the heating temperature is not high, the plastic layer will only melt and then reshape, but will not release harmful substances. At this time, a packaging bag containing food is produced. The equipment can be combined with a conveyor belt and an assembly line for mass production.

[0014] Fourthly, in the present invention, the distance between the two steel pipes and the two steel coils can be adjusted. Since the steel pipes and the steel coils are heated by internal resistance heating, even if the positions of the steel pipes and the steel coils change, the current will only flow in the "mouth" shape formed by the two. When the distance between the two steel pipes needs to be adjusted, it is only necessary to turn the knob on the lifting frame, and by turning the knob on the box body, the distance between the two steel coils can be adjusted. Therefore, the size of the area enclosed by the two steel pipes and the two steel coils can be adjusted, so that it can be used to make packaging bags of different sizes.

[0015] Fifth: In the present invention, when the steel pipe moves downward, the steel coil is stretched and stretched out from the rotating sleeve. At this time, the rotating sleeve is rotating, so the prism will also rotate. The rotation of the prism will drive the rotating column in the tank body to rotate. The tank body can be pre-loaded with a cleaning agent. When the prism rotates, the seepage holes on the rotating column will periodically allow the cleaning agent in the tank body to seep downward and enter the movable box through the bottom pipe and the connecting pipe. Therefore, the roller will be soaked. When the steel coil is telescopic, the roller in the movable box can clean the surface of the steel coil to prevent the steel coil from being adhered to paper scraps, dust or food debris due to long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments:

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 The present invention Figure 1 Another perspective view shown;

[0019] Figure 3 It is a schematic diagram of the connection structure between the bracket and the pressing component in the present invention;

[0020] Figure 4 The present invention Figure 3 Another perspective view shown;

[0021] Figure 5 It is a schematic diagram of the connection structure between the pressing component and the adjusting component in the present invention;

[0022] Figure 6 It is a schematic diagram of the connection structure of the pressing component, the conductive component and the air suction component in the present invention;

[0023] Figure 7 It is a cross-sectional view of the connection structure of the steel coil, the adjustment component and the wiping component in the present invention;

[0024] Figure 8 It is a partial structural exploded diagram of the slide and the adjustment assembly in the present invention;

[0025] Fig. 9 It is a schematic diagram of the connection structure between the knob and the bidirectional screw in the present invention;

[0026] Fig.10 It is a cross-sectional view of the internal structure of the tank body in the present invention;

[0027] Fig.11 is a cross-sectional view of the internal structure of the steel pipe in the present invention;

[0028] Fig.12 is a cross-sectional view of the internal structure of the metal shell of the present invention;

[0029] Fig.13 It is a schematic diagram of the structure of the plastic layer and the paper layer in the present invention.

[0030] Description of reference numerals:

[0031] 1. Bracket; 2. Pressing assembly; 21. Slide; 22. Steel coil; 23. Telescopic motor; 24. Lifting frame; 25. Slider; 26. Steel pipe; 27. Slide bar; 28. Bump; 29. ​​Compression spring; 3. Adjusting assembly; 31. Rotating sleeve; 32. Prism; 33. Shell; 34. Spring; 35. Box; 36. Knob; 37. Bidirectional screw; 38. Worm; 39. Worm wheel; 310. Chain; 4. Conductive assembly ; 41. power supply; 42. wire; 43. metal shell; 44. bent pipe; 45. rotating rod; 5. suction assembly; 51. fan; 52. fixed pipe; 53. telescopic pipe; 54. electromagnet; 55. arc block; 56. iron block; 6. wiping assembly; 61. tank body; 62. limit block; 63. rotating column; 64. seepage hole; 65. bottom pipe; 66. connecting pipe; 67. movable box; 68. roller; 7. plastic layer; 8. paper layer. DETAILED DESCRIPTION

[0032] The present invention is described in detail below, and the technical solutions in the embodiments of the present invention are clearly and completely described. 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.

[0033] The present invention provides a food packaging bag making machine pressing device through improvement. The technical solution of the present invention is:

[0034] like Figure 1-Figure 13As shown, a pressing device of a food packaging bag making machine includes a bracket 1, and a pressing component 2 is arranged inside the bracket 1. The pressing component 2 includes four slides 21, two steel coils 22, a telescopic motor 23, a lifting frame 24, two sliders 25 and two steel pipes 26, wherein two slides 21 are slidably connected to one side of the bracket 1, and the other two slides 21 are slidably connected to the other side of the bracket 1, and the two ends of the two steel coils 22 are respectively wound on the two slides 21, the telescopic motor 23 is fixedly connected to the bracket 1, the lifting frame 24 is fixedly connected to the output shaft of the telescopic motor 23, the two sliders 25 are slidably connected to the lifting frame 24, and the two steel pipes 26 are respectively fixedly connected to the two sliders 25, and a conductive component 4 is arranged on the bracket 1, and the conductive component 4 includes a power supply 41, a wire 42, a metal shell 43, a bent pipe 44 and a rotating rod 45, and the power supply 41 is fixedly connected to On the bracket 1, two wires 42 are electrically connected to the positive and negative poles of the power supply 41, respectively, two metal shells 43 are fixedly connected to the ends of the two wires 42, respectively, and two curved pipes 44 are fixedly connected between the two steel pipes 26 and the two metal shells 43, respectively. An air suction component 5 is provided on the bracket 1, and the air suction component 5 includes a fan 51, a fixed tube 52, a telescopic tube 53, an electromagnet 54, an arc block 55 and an iron block 56. The fan 51 is fixedly connected to the bracket 1, the fixed tube 52 is fixedly connected to the fan 51, the two telescopic tubes 53 are slidably connected to the two ends of the fixed tube 52, the two electromagnets 54 are fixedly connected to the inner walls of the two metal shells 43, the two arc blocks 55 are slidably connected to the inner walls of the two metal shells 43, and the two iron blocks 56 are fixedly connected to the two arc blocks 55, respectively. The bracket 1 is also provided with an adjustment component 3 and a wiping component 6.

[0035] Further, such as Fig.11 As shown, the pressing assembly 2 further includes a slide bar 27, a protrusion 28 and a compression spring 29. The two slide bars 27 are respectively slidably connected to the inside of the two steel tubes 26. The multiple protrusions 28 are respectively fixedly connected to the two slide bars 27. The two compression springs 29 are respectively fixedly connected between the two slide bars 27 and the inner walls of the two steel tubes 26. The bottoms of the two steel tubes 26 are each provided with multiple through holes. The multiple protrusions 28 are respectively located in the multiple through holes. Since the steel tubes 26 are actually located above the steel coil 22, if the composite paper is directly adsorbed through the steel tubes 26, the composite paper cannot be kept. The steel tube 26 is completely flat, so the bottom of the steel coil 22 is not on the same horizontal line, and a protrusion 28 is provided, so that the protrusion 28 is slightly protruding, so that the bottom of the protrusion 28 and the bottom of the steel coil 22 are on the same horizontal line, so that the composite paper can be in a flat state when being sucked, and the protrusion 28 is connected to the slide bar 27, and the slide bar 27 is connected to the compression spring 29, so the protrusion 28 can shake. In the process of adjusting the distance between the two steel coils 22, the steel coil 22 may touch the protrusion 28, and the protrusion 28 can shake appropriately without affecting the adjustment of the distance between the steel coils 22.

[0036] Further, such as Figure 7 and Figure 8 As shown, the adjustment assembly 3 includes a rotating sleeve 31, a prism 32, a shell 33 and a spring spring 34. The four rotating sleeves 31 are respectively rotatably connected to the four slides 21. The two ends of the two steel coils 22 are respectively fixedly connected to the four rotating sleeves 31. The two prisms 32 respectively penetrate the four rotating sleeves 31, and the two prisms 32 are slidably connected to the four rotating sleeves 31. The four shells 33 are fixedly connected to the bracket 1. The two ends of the two prisms 32 are respectively rotatably connected to the four shells 33. The four spring springs 34 are respectively arranged inside the four shells 33. One end of the four spring springs 34 is respectively connected to the two prisms. The two ends of the column 32 are fixedly connected, and the other ends of the four clockwork springs 34 are respectively fixedly connected to the inner walls of the four shells 33. The steel coil 22 is actually wound around the rotating sleeve 31. Therefore, when the steel pipe 26 presses the steel coil 22 downward, the rotating sleeve 31 will rotate. The rotating sleeve 31 is connected to the prism 32, and the prism 32 is connected to the clockwork spring 34. This ensures that when the steel pipe 26 is pressed downward, the steel coil 22 can be straightened, and when the steel pipe 26 is controlled to rise by the telescopic motor 23, the steel coil 22 can also reset itself. The cross-section of the prism 32 is square, so the slide 21 can drive the rotating sleeve 31 to move on the prism 32.

[0037] Further, such as Figure 1 , Figure 2 and Figure 8 As shown, the adjustment component 3 also includes three bidirectional screws 37 and a chain 310, wherein two bidirectional screws 37 are rotatably connected between the inner walls on both sides of the bracket 1, four slides 21 are respectively threadedly connected to the two ends of the two bidirectional screws 37, and the chain 310 is arranged between the two bidirectional screws 37, and the other bidirectional screw 37 is rotatably connected to the inside of the lifting frame 24, and two sliders 25 are respectively threadedly connected to the two ends of the bidirectional screw 37, and the two ends of the bidirectional screw 37 have threads in different directions. Therefore, when the three bidirectional screws 37 rotate, they can respectively drive the slides 21 and the sliders 25 to move closer or farther, thereby adjusting the spacing between the steel coil 22 and the steel pipe 26, wherein the two bidirectional screws 37 used to control the spacing between the steel coils 22 are rotated synchronously through the chain 310.

[0038] Further, such as Figure 5 , Figure 8 and Fig. 9As shown, the adjustment assembly 3 also includes a box body 35, a knob 36, a worm 38 and a worm wheel 39. The box body 35 is fixedly connected to the bracket 1. The two worms 38 are rotatably connected to the box body 35 and the inner wall of the lifting frame 24 respectively. The two knobs 36 are rotatably connected to the box body 35 and the lifting frame 24 respectively. The two worms 38 are fixedly connected to the two knobs 36 respectively. The two worm wheels 39 are respectively meshed with the two worms 38, and the two worm wheels 39 are respectively fixedly connected to the two bidirectional screws 37. The self-locking effect of the worm 38 and the worm wheel 39 ensures that the spacing of the steel coil 22 or the steel pipe 26 will not change unless the knob 36 is manually adjusted.

[0039] Further, such as Figure 7 and Fig.10 As shown, the wiping assembly 6 includes a tank body 61, a limit block 62, a rotating column 63 and an seepage hole 64. The two tank bodies 61 are fixedly connected to the bracket 1. A group of limit blocks 62 are fixedly connected inside the two tank bodies 61. The two rotating columns 63 are respectively rotatably connected between the two groups of limit blocks 62. The seepage hole 64 is opened on the two rotating columns 63. The two prisms 32 respectively penetrate the two rotating columns 63. The diluted detergent can be poured into the tank body 61 to clean the surface of the steel coil 22. When the steel coil 22 is pulled downward by the steel pipe 26, the prism 32 will rotate. At this time, the rotating column 63 and the seepage hole 64 thereon will also rotate, and the seepage hole 64 originally blocked by the limit block 62 can slowly discharge the detergent in the tank body 61 downward.

[0040] Further, such as Figure 7 As shown, the wiping assembly 6 also includes a bottom tube 65, a connecting tube 66, a movable box 67 and a roller 68. The two bottom tubes 65 are respectively fixedly connected to the bottoms of the two tank bodies 61, and the four connecting tubes 66 are respectively slidably connected to the two ends of the two bottom tubes 65. The four movable boxes 67 are respectively fixedly connected to the four connecting tubes 66. The interior of each movable box 67 is rotatably connected to two rollers 68, and the surface of the roller 68 has bristles. When the steel coil 22 is active, the roller 68 will move relatively on the surface of the steel coil 22, and the detergent in the tank body 61 will enter the movable box 67 along the bottom tube 65 and the connecting tube 66, thereby soaking the bristles. Therefore, when the steel coil 22 is active, it will be cleaned by the roller 68 at the same time to clean up the dust, paper scraps, food crumbs, etc. adhered to it.

[0041] Furthermore, in the wiping assembly 6, the two steel coils 22 respectively pass through four movable boxes 67, and the two rollers 68 in each movable box 67 are respectively located on both sides of the steel coil 22. The connecting pipe 66 and the bottom pipe 65 can be relatively retracted and relatively rotated, so when the steel coil 22 is active, the movable box 67 can move flexibly with the steel coil 22.

[0042] The specific working method is: first, the composite paper is conveyed by two conveyor belts, the composite paper on one conveyor belt can be directly poured with the food to be packaged, and the composite paper on the other conveyor belt is used to cooperate with the equipment to complete the production of packaging bags. The composite paper is divided into a plastic layer 7 and a paper layer 8. The equipment is moved by connecting a manipulator. When the equipment moves to the top of one of the composite papers, the telescopic motor 23 is started, and the lifting frame 24 is driven downward by the extended output shaft, then the two sliders 25 and the steel pipe 26 connected to the slider 25 will move downward. When the steel pipe 26 moves downward, the steel coil 22 will be pulled downward together. Since the steel coil 22 is wound on the rotating sleeve 31, and the rotating sleeve 31 is indirectly subjected to the elastic force of the spring 34, the steel coil 22 will be stretched from the two rotating sleeves 31 while being pulled downward by the two steel pipes 26. At the same time, the steel coil 22 located between the two steel pipes 26 will be in a stretched state, and the two steel pipes 26 will move downward with the two steel coils 22, gradually approaching the composite paper below.

[0043] At this time, the fan 51 is turned on. A fan is arranged inside the fan 51. The interiors of the fixed tube 52, the telescopic tube 53, the metal shell 43, the bent tube 44 and the two steel tubes 26 are all connected. The fan 51 itself is provided with an exhaust port. Therefore, negative pressure is eventually generated inside the two steel tubes 26. The holes on the plurality of protrusions 28 will form suction. When the two steel tubes 26 are close to the composite paper, the suction at the protrusions 28 will suck up the composite paper. At this time, the device is moved, and the device and the sucked composite paper are moved together, so that the composite paper is sent to the top of another composite paper. Then, the telescopic motor 23 is used to move the composite paper sucked on the steel tube 26 to the surface of another composite paper, so that the two composite papers are attached to each other. The other paper is poured with the food to be packaged in advance. At this time, the packaging bag can be directly sealed.

[0044] When the plastic layers 7 of two sheets of composite paper are attached, the power source 41 is turned on, and the power source 41 generates current in the wire 42. The current passes through the steel pipe 26 and the steel coil 22 made of metal, and a closed circuit is formed. At this time, the internal resistance causes the steel pipe 26 and the steel coil 22 to heat up. The steel coil 22 and the steel pipe 26 are adjusted in material and size in advance so that they can maintain a similar temperature under the same current, and this temperature needs to be slightly higher than the melting point of the plastic layer 7 on the composite paper. Therefore, after the steel pipe 26 sends the composite paper it absorbs to the surface of another paper, the steel pipe 26 and the steel coil 22 generates heat, so that the plastic layer 7 is heated and melted. Since the shape formed by the steel pipe 26 and the steel coil 22 is a "mouth" shape, after the two composite papers are pasted together, only the plastic layer 7 at the edge will melt, and the packaged food is in it. After the plastic layer 7 melts, it is cooled again, and the plastic layers 7 on the two composite papers will be combined together. Because the heating temperature is not high, the plastic layer 7 will only melt and then reshape, but will not release harmful substances. At this time, a packaging bag containing food is produced. The equipment can be combined with a conveyor belt and an assembly line for mass production.

[0045] In order to produce packaging bags of different sizes, the spacing between the two steel pipes 26 and the two steel coils 22 can be adjusted. Since the steel pipes 26 and the steel coils 22 are heated by internal resistance heating, even if the positions of the steel pipes 26 and the steel coils 22 change, the current will only flow in the "mouth" shape formed by the two. When the spacing between the two steel pipes 26 needs to be adjusted, it is only necessary to rotate the knob 36 on the lifting frame 24 to drive the worm 38 and the worm wheel 39 in the lifting frame 24 to rotate, so that the bidirectional screw 37 in the lifting frame 24 can be rotated, so that the two sliders 25 and the steel pipes 26 are close to or away from each other, and rotating the knob 36 on the box 35 can drive another bidirectional screw 37 to rotate, and this bidirectional screw 37 will drive another bidirectional screw 37 to rotate through the chain 310, so that the four slides 21 are close to or away from each other, so as to adjust the spacing between the two steel coils 22. Therefore, the size of the area surrounded by the two steel pipes 26 and the two steel coils 22 can be adjusted, so that it can be used to make packaging bags of different sizes.

[0046] When the steel tube 26 moves downward, the steel coil 22 is stretched and stretched out from the rotating sleeve 31. At this time, the rotating sleeve 31 is rotating, so the prism 32 will also rotate. The rotation of the prism 32 will drive the rotating column 63 in the tank body 61 to rotate. The tank body 61 can be pre-loaded with detergent. When the prism 32 rotates, the seepage hole 64 on the rotating column 63 will periodically allow the detergent in the tank body 61 to seep downward and enter the movable box 67 through the bottom pipe 65 and the connecting pipe 66. Therefore, the roller 68 will be soaked. When the steel coil 22 is telescopic, the roller 68 in the movable box 67 can clean the surface of the steel coil 22 to prevent the steel coil 22 from being adhered to paper scraps, dust or food debris due to long-term use.

[0047] The technical means disclosed in the solution of the present invention are not limited to the technical means disclosed in the above technical means, but also include technical solutions composed of equivalent replacement of the above technical features. Matters not covered in the present invention belong to the common knowledge of those skilled in the art.

Claims

1. A pressing device for a food packaging bag making machine, comprising a bracket (1), characterized in that: A pressing assembly (2) is arranged inside the support (1), and the pressing assembly (2) comprises four slides (21), two steel coils (22), a telescopic motor (23), a lifting frame (24), two sliders (25) and two steel pipes (26), wherein two of the slides (21) are slidably connected to one side of the support (1), and the other two slides (21) are slidably connected to the other side of the support (1), the two ends of the two steel coils (22) are respectively wound around the two slides (21), the telescopic motor (23) is fixedly connected to the support (1), the lifting frame (24) is fixedly connected to the output shaft of the telescopic motor (23), the two sliders (25) are slidably connected to the lifting frame (24), and the two steel pipes (26) are respectively fixedly connected to the output shaft of the telescopic motor (23). The bracket (1) is fixedly connected to the two sliders (25); a conductive component (4) is arranged on the bracket (1); the conductive component (4) comprises a power supply (41), a wire (42), a metal shell (43), a bent pipe (44) and a rotating rod (45); the power supply (41) is fixedly connected to the bracket (1); the two wires (42) are respectively electrically connected to the positive and negative electrodes of the power supply (41); the two metal shells (43) are respectively fixedly connected to the ends of the two wires (42); the two bent pipes (44) are respectively fixedly connected between the two steel pipes (26) and the two metal shells (43); and a suction component (5) is arranged on the bracket (1); the suction component (5) comprises a fan (51), a fixed pipe (52), a telescopic pipe (53), an electromagnet ( The fan (51) is fixedly connected to the bracket (1), the fixed tube (52) is fixedly connected to the fan (51), the two telescopic tubes (53) are respectively slidably connected to the two ends of the fixed tube (52), the two electromagnets (54) are respectively fixedly connected to the inner walls of the two metal shells (43), the two arc blocks (55) are respectively slidably connected to the inner walls of the two metal shells (43), the two iron blocks (56) are respectively fixedly connected to the two arc blocks (55), the bracket (1) is also provided with an adjustment component (3) and a wiping component (6), the pressing component (2) also includes a slide rod (27), a protrusion (28) and a compression spring (29), the two slide rods (2 7) are respectively slidably connected to the inside of the two steel tubes (26), the plurality of protrusions (28) are respectively fixedly connected to the two slide bars (27), the two compression springs (29) are respectively fixedly connected between the two slide bars (27) and the inner walls of the two steel tubes (26), the bottoms of the two steel tubes (26) are each provided with a plurality of through holes, the plurality of protrusions (28) are respectively located in the plurality of through holes, the adjustment component (3) comprises a rotating sleeve (31), a prism (32), a shell (33) and a spring spring (34), the four rotating sleeves (31) are respectively rotatably connected to the four slide frames (21), the two ends of the two steel coils (22) are respectively fixedly connected to the four rotating sleeves (31), the two prisms (32) respectively penetrate the four rotating sleeves (31),The two prisms (32) are slidably connected to the four rotating sleeves (31), the four housings (33) are fixedly connected to the bracket (1), the two ends of the two prisms (32) are respectively rotatably connected to the four housings (33), the four spring springs (34) are respectively arranged inside the four housings (33), one end of the four spring springs (34) is respectively fixedly connected to the two ends of the two prisms (32), and the other ends of the four spring springs (34) are respectively fixedly connected to the inner walls of the four housings (33), and the adjustment component (3) also includes three bidirectional The invention relates to a screw rod (37) and a chain (310), wherein two of the bidirectional screw rods (37) are rotatably connected between the inner walls of both sides of the bracket (1), four slides (21) are respectively threadedly connected to the two ends of the two bidirectional screw rods (37), and the chain (310) is arranged between the two bidirectional screw rods (37), another bidirectional screw rod (37) is rotatably connected to the inside of the lifting frame (24), and two slides (25) are respectively threadedly connected to the two ends of the bidirectional screw rod (37), and the adjustment component (3) also includes a box (35), a knob (36), a worm gear (21), and a screw rod (35). The box body (35) is fixedly connected to the bracket (1), the two worms (38) are respectively rotatably connected to the box body (35) and the inner wall of the lifting frame (24), the two knobs (36) are respectively rotatably connected to the box body (35) and the lifting frame (24), the two worms (38) are respectively fixedly connected to the two knobs (36), the two worm wheels (39) are respectively meshed with the two worms (38), and the two worm wheels (39) are respectively fixedly connected to the two bidirectional screws (37), and the telescopic motor is started. (23), the lifting frame (24) is driven downward by the extended output shaft, and the two sliders (25) and the steel pipe (26) connected to the slider (25) will move downward. When the steel pipe (26) moves downward, it will pull the steel coil (22) downward together. When the plastic layers (7) of the two composite papers are attached, the power supply (41) is started, and the power supply (41) generates current in the wire (42). The current passes through the steel pipe (26) and the steel coil (22) made of metal, forming a closed circuit. At this time, the internal resistance will cause the steel pipe (26) and the steel coil (22) to heat up.

2. The food packaging bag making machine pressing device according to claim 1, characterized in that: The wiping assembly (6) comprises a tank body (61), a stop block (62), a rotating column (63) and an exudation hole (64); the two tank bodies (61) are fixedly connected to the bracket (1); a group of the stop blocks (62) are fixedly connected inside the two tank bodies (61); the two rotating columns (63) are respectively rotatably connected between the two groups of stop blocks (62); the exudation hole (64) is formed on the two rotating columns (63); and the two prisms (32) respectively penetrate the two rotating columns (63).

3. The food packaging bag making machine pressing device according to claim 2, characterized in that: The wiping assembly (6) further comprises a bottom tube (65), a connecting tube (66), a movable box (67) and a roller (68); the two bottom tubes (65) are respectively fixedly connected to the bottoms of the two tank bodies (61); the four connecting tubes (66) are respectively slidably connected to the two ends of the two bottom tubes (65); the four movable boxes (67) are respectively fixedly connected to the four connecting tubes (66); and the interior of each movable box (67) is rotatably connected to two rollers (68).

4. The food packaging bag making machine pressing device according to claim 3, characterized in that: The wiping assembly (6) has two steel coils (22) that pass through four movable boxes (67) respectively, and two rollers (68) in each movable box (67) are respectively located on two sides of the steel coil (22).

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