A hemming type folding angle device

Abstract

A corner-folding and edge-ironing device provided by the present invention includes a lower film mechanism and a corner-folding and edge-ironing mechanism. The lower film mechanism vertically suspends a film flat in front of a box body to be packaged. During the process of the box body to be packaged moving forward, the box body is sleeved with the film. The corner-folding and edge-ironing mechanism folds the corners of the film. The corner-folding and edge-ironing mechanism includes a pair of front folding plates, a pair of rear folding mechanisms, a bottom lining plate that can move up and down, and a rear ironing plate that can be flipped. The two front folding plates are respectively clamped on both sides of the box body to be packaged. The two rear folding mechanisms are respectively clamped on both sides of the box body to be packaged. The rear folding mechanisms are located on the input side of the front folding plates. The bottom lining plate and the rear ironing plate are both located on the input side of the front folding plates. The bottom lining plate and the rear ironing plate cooperate to iron-seal the film at the rear end of the box body to be packaged, and at the same time push the box body to be packaged forward. The front folding plates and the rear folding mechanisms fold the films on both sides of the box body to be packaged inward. The present invention is conducive to the automatic, rapid and stable progress of packaging production.

Description

Technical Field

[0001] The present invention relates to the field of thin film encapsulation, and in particular to a hot-edge type corner folding device. Background Art

[0002] In the production of thin film encapsulation, the entire thin film needs to be encapsulated on the box to be encapsulated. In the prior art, the corner folding of the film sleeve is not smooth enough, and the error rate is high, which is not conducive to the stable progress of automated production. Therefore, the prior art still needs to be improved and enhanced. Summary of the Invention

[0003] In view of the deficiencies of the above prior art, the purpose of the present invention is to provide a hot-edge type corner folding device that is conducive to automated rapid production.

[0004] To solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A hot-edge type corner folding device includes a lower film mechanism and a corner folding and hot-edge mechanism. The lower film mechanism vertically suspends the thin film flat in front of the box to be encapsulated. During the forward movement of the box to be encapsulated, the thin film is sleeved on it. The corner folding and hot-edge mechanism performs corner folding on it. The corner folding and hot-edge mechanism includes a pair of front folding plates, a pair of rear folding mechanisms, a bottom lining plate that can move up and down, and a rear hot plate that can be flipped. The two front folding plates are respectively clamped on both sides of the box to be encapsulated. The two rear folding mechanisms are respectively clamped on both sides of the box to be encapsulated. The rear folding mechanism is located on the input side of the front folding plate. The bottom lining plate and the rear hot plate are both located on the input side of the front folding plate. The bottom lining plate and the rear hot plate cooperate to perform hot sealing on the rear-end thin film of the box to be encapsulated, and at the same time push the box to be encapsulated forward. The front folding plates and the rear folding mechanisms perform inward edge folding on the thin films on both sides of the box to be encapsulated.

[0006] In the hot-edge type corner folding device, the rear folding mechanism includes a rear folding plate, an L-shaped connecting plate, a rear folding track, and a rear folding slider. The rear folding plate is installed on the L-shaped connecting plate. The L-shaped connecting plate is installed on the rear folding slider. The rear folding slider is slidably installed on the rear folding track.

[0007] In the hot-edge type corner folding device, the rear folding mechanism further includes a rear folding cylinder. The output end of the rear folding cylinder is connected to the rear folding slider and drives the rear folding plate to move back and forth.

[0008] In the hot-edge type corner folding device, the front folding plate is a wedge-shaped plate, and the width of the input side is smaller than that of the output side.

[0009] In the hot-edge type corner folding device, the input end of the front folding plate has a bending transition part that turns outward.

[0010] In the hot-edge type corner folding device, the corner folding and hot-edge mechanism further includes a pair of bottom lining rails. The bottom lining plate is slidably installed on the bottom lining rails.

[0011] The described edge-ironing type corner folding device, the corner folding and edge-ironing mechanism further includes an upper cover plate and an upper support. The two ends of the upper cover plate are rotatably installed on the upper support, and the rear ironing plate is vertically fixed on the upper cover plate and flips together with the upper cover plate.

[0012] The described edge-ironing type corner folding device, the corner folding and edge-ironing mechanism further includes a pair of side corner folding components. The side corner folding components are located at the output end of the front folding plate. The side corner folding components include a valley-shaped plate, a lower folding crescent plate and an upper folding crescent plate. There is a gap between the upper folding crescent plate and the lower folding crescent plate and the valley-shaped plate for the film corners on both sides of the box to be packaged to pass through. A gap is formed between the lower folding crescent plate and the valley-shaped descending part of the valley-shaped plate, and a gap is formed between the upper folding crescent plate and the valley-shaped ascending part of the valley-shaped plate. The upper and lower film corners on both sides of the box to be packaged pass through the gaps between the lower folding crescent plate and the valley-shaped plate and between the upper folding crescent plate and the valley-shaped plate respectively to complete the corner folding.

[0013] The described edge-ironing type corner folding device, the corner folding and edge-ironing mechanism further includes a pair of left and right ironing plates. The left and right ironing plates are located at the output end of the side corner folding components.

[0014] The described edge-ironing type corner folding device, the lower film mechanism includes a first roller, a second roller and a pair of side plates. The first roller and the second roller are parallelly installed between the two side plates. A roller motor is installed on one side plate, and the roller motor drives the first roller to rotate. A third roller and at least a pair of rolling components are arranged below the first roller and the second roller. Roller wheels are arranged on the rolling components, and the roller wheels are arranged parallel to the third roller. A fixed cutting knife is arranged below the third roller or the rolling components, and a swingable moving cutting knife is arranged on one side of the third roller or the rolling components. A lower film component is arranged below the fixed cutting knife. The film passes through between the first roller and the second roller, between the third roller and the rolling components and the lower film component from top to bottom in sequence. An air blowing component is further arranged above the third roller and the rolling components. The air blowing component includes a plurality of air blowing pipe orifices that blow air downward on both sides of the film, and corresponding air blowing channels are arranged on the third roller.

[0015] Compared with the prior art, a corner folding and edge ironing device provided by the present invention includes a lower film mechanism and a corner folding and edge ironing mechanism. The lower film mechanism vertically suspends a film flat in front of a box to be packaged. During the forward movement of the box to be packaged, the film is sleeved on it. The corner folding and edge ironing mechanism folds the corners. The corner folding and edge ironing mechanism includes a pair of front folding plates, a pair of rear folding mechanisms, a bottom lining plate that can move up and down, and a rear ironing plate that can be flipped. The two front folding plates are respectively clamped on both sides of the box to be packaged, and the two rear folding mechanisms are respectively clamped on both sides of the box to be packaged. The rear folding mechanism is located on the input side of the front folding plate. The bottom lining plate and the rear ironing plate are both located on the input side of the front folding plate. The bottom lining plate and the rear ironing plate cooperate to iron-seal the film at the rear end of the box to be packaged, and at the same time push the box to be packaged forward. The front folding plates and the rear folding mechanisms fold the films on both sides of the box to be packaged inward. The present invention can quickly and smoothly sleeve the film on the box to be packaged, and can quickly fold and iron-seal the corners of the films at the rear end, left end, and right end of the packaged box, which is beneficial to the automatic, fast, and stable progress of the packaging production. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. is a schematic structural diagram of the corner folding and edge ironing device provided by the present invention.

[0017] Figure 2 FIG. is a schematic structural diagram of the corner folding and edge ironing mechanism provided by the present invention.

[0018] Figure 3 FIG. is a schematic structural diagram of the side corner folding component provided by the present invention.

[0019] Figure 4 FIG. is a schematic structural diagram of the lower film mechanism provided by the present invention Figure 1 .

[0020] Figure 5 FIG. is a schematic structural diagram of the lower film mechanism provided by the present invention Figure 2 .

[0021] Figure 6 FIG. is a schematic structural diagram of the cooperation between the third roller and the air blowing component of the lower film mechanism provided by the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] It should be noted that when a component is referred to as "mounted on", "fixed to" or "arranged on" another component, it can be directly on the other component or there may be an intermediate component at the same time. When a component is referred to as "connected to" another component, it can be directly connected to the other component or there may be an intermediate component at the same time.

[0024] It should also be noted that the directional terms such as left, right, up, and down in the embodiments of the present invention are only relative concepts to each other or are referenced based on the normal use state of the product, and should not be considered restrictive.

[0025] As Figure 1 , Figure 2 and Figure 3 shown, a corner folding and edge ironing device provided by the present invention includes a lower film mechanism 100 and a corner folding and edge ironing mechanism 200. The lower film mechanism 100 vertically suspends a film flat in front of a box body to be encapsulated. During the forward movement of the box body to be encapsulated, the film is sleeved on it. The corner folding and edge ironing mechanism 200 performs corner folding on it. The corner folding and edge ironing mechanism 200 includes a pair of front folding plates 201, a pair of rear folding mechanisms, a bottom lining plate 203 that can move up and down, and a rear ironing plate 204 that can be flipped. The two front folding plates 201 are respectively clamped on both sides of the box body to be encapsulated. The two rear folding mechanisms are respectively clamped on both sides of the box body to be encapsulated. The rear folding mechanism is located on the input side of the front folding plate 201. The bottom lining plate 203 and the rear ironing plate 204 are both located on the input side of the front folding plate 201. The bottom lining plate 203 and the rear ironing plate 204 cooperate to iron-seal the rear film of the box body to be encapsulated, and at the same time push the box body to be encapsulated forward. The front folding plates 201 and the rear folding mechanisms fold the films on both sides of the box body to be encapsulated inward. For the corner folding and edge ironing device provided by the present invention, the rear folding mechanism includes a rear folding plate 202, an L-shaped connecting plate 205, a rear folding track 206, and a rear folding slider 207. The rear folding plate 202 is mounted on the L-shaped connecting plate 205. The L-shaped connecting plate 205 is mounted on the rear folding slider 207. The rear folding slider 207 is slidably mounted on the rear folding track 206. For the corner folding and edge ironing device provided by the present invention, the rear folding mechanism further includes a rear folding cylinder 208. The output end of the rear folding cylinder 208 is connected to the rear folding slider 207 to drive the rear folding plate 202 to move back and forth. For the corner folding and edge ironing device provided by the present invention, the front folding plate 201 is a wedge-shaped plate, and the width of the input side is smaller than that of the output side. For the corner folding and edge ironing device provided by the present invention, the input end of the front folding plate 201 has a bending transition part that turns outward.

[0026] The ironing and corner folding device provided by the present invention, the ironing and corner folding mechanism 200 further includes a pair of bottom lining slide rails 214, and the bottom lining plate 203 is slidably mounted on the bottom lining slide rails 214. The ironing and corner folding device provided by the present invention, the ironing and corner folding mechanism 200 further includes an upper cover plate 209 and an upper bracket, both ends of the upper cover plate 209 are rotatably mounted on the upper bracket, and the rear ironing plate 204 is vertically fixed on the upper cover plate 209 and turned over together with the upper cover plate 209. The ironing and folding device provided by the present invention, the ironing and folding mechanism 200 also includes a pair of side folding parts 211, the side folding parts 211 are located at the output end of the front folding plate 201, the side folding parts 211 include a valley-shaped plate 212, a lower folding moon plate 213 and an upper folding moon plate 215, and there is a gap between the upper folding moon plate 215 and the lower folding moon plate 213 and the valley-shaped plate 212 for the film corners on both sides of the box to be packaged to pass through, the lower folding moon plate 213 forms a gap with the valley-shaped descending part of the valley-shaped plate 212, and the upper folding moon plate 215 forms a gap with the valley-shaped ascending part of the valley-shaped plate 212, so that the upper and lower film corners on both sides of the box to be packaged can pass through the gap between the lower folding moon plate 213 and the valley-shaped plate 212 and the gap between the upper folding moon plate 215 and the valley-shaped plate 212 to complete the folding. The ironing and folding device provided by the present invention, the ironing and folding mechanism 200 further includes a pair of left and right ironing plates 216 , and the left and right ironing plates 216 are located at the output end of the side folding component 211 .

[0027] In the present invention, the box body to be packaged encounters the vertical film in front during the forward process, and continues to move forward against the film. At this time, the front end, top end and bottom end of the box body to be packaged are covered with the film. At the preset position, the bottom lining plate 203 moves upward to fold the film corners at the rear end of the box body to be packaged. The rear ironing plate 204 turns from back to front and from top to bottom, cooperates with the bottom lining plate 203, folds the film corners at the rear end of the packaged box body, and irons the edges to seal it. At the same time, the box body to be packaged is pushed forward for a distance. When the box body to be packaged and the front folding plate 201 When in contact, the front folding plate 201 folds the front film corners on both sides of the moving box body to be packaged inwards, and the rear folding plate 202 moves forward and scrapes the two sides of the box body to be packaged, so that the rear film corners on both sides of the box body to be packaged are folded inwards and enter the inner side of the front folding plate 201. The front folding plate 201 separates the remaining upper and lower film corners on both sides of the box body to be packaged, and as the box body to be packaged enters the side folding component 211, the remaining upper and lower film corners on both sides of the box body to be packaged are folded in turn, and then ironed through the left and right ironing plates 216.

[0028] like Figure 4 and Figure 5As shown in the figure, the present invention provides a lower film mechanism 100, which includes a first roller 101, a second roller 102 and a pair of side plates 104. The first roller 101 and the second roller 102 are parallelly installed between the two side plates 104. A roller motor 131 is installed on one side plate 104, and the roller motor 131 drives the first roller 101 to rotate. Below the first roller 101 and the second roller 102, there are a third roller 103 and a pair of rolling components 105 which are spaced apart and symmetrically arranged. The rolling components 105 are provided with roller wheels 106, and the roller wheels 106 are arranged parallel to the third roller 103. Below the third roller 103 or the rolling components 105, there is a fixed cutting knife 107. On one side of the third roller 103 or the rolling components 105, there is a swingable moving cutting knife 108. Below the fixed cutting knife 107, there is a lower film component 109. The film passes through between the first roller 101 and the second roller 102, between the third roller 103 and the rolling components 105, and the lower film component 109 from top to bottom. The present invention can further convey and lower the film conveyed from the upper level, and perform slitting at a preset position while ensuring that the film maintains sufficient tension. Preferably, in the lower film mechanism 100 provided by the present invention, the lower film component 109 includes a limiting plate, and the limiting plate is provided with a through groove for the film to pass through. The present invention can further convey and lower the film conveyed from the upper level, and perform slitting at a preset position while ensuring that the film maintains sufficient tension. The present invention is applicable to both the slitting process of the film and one of the processes of packaging using the film. For example, the product to be coated with the film passes through between the cutting knife and the lower film component 109, pushes out the film, and then the cutting knife cuts the film. Preferably, in the lower film mechanism 100 provided by the present invention, the two ends of the second roller 102 are provided with pushing components 110. The pushing components 110 push the second roller 102 to abut against the first roller 101 and clamp towards the first roller 101, or the pushing components 110 retract the second roller 102 to move the second roller 102 away from the first roller 101. Preferably, in the lower film mechanism 100 provided by the present invention, the pushing components 110 are a pair of telescopic cylinders, and the two telescopic cylinders are respectively installed on a pair of side plates 104. The roller motor 131 is arranged above the first roller 101 and inside the side plate 104, and the roller diameter of the second roller 102 is smaller than the roller diameter of the first roller 101.Preferably, for the film feeding mechanism 100 provided by the present invention, a pair of parallel rods 111 are disposed at intervals below the first roller 101 and the second roller 102 and above the third roller 103 and the rolling member 105. A plurality of annular members 112 are sleeved on the parallel rods 111. The annular members 112 are rotatable. The film passing through the first roller 101 and the second roller 102 passes between the two parallel rods 111 and then falls to the third roller 103 and the rolling member 105. The parallel rods 111 are installed between two side plates 104. Preferably, the film feeding mechanism 100 provided by the present invention further includes a fixed column 113. The rolling member 105 is installed on the fixed column 113 so that its position can be adjusted horizontally.

[0029] Preferably, as Figure 6 shown, a blowing component 140 is further disposed above the third roller 103 and the rolling member 105. The blowing component 140 includes a plurality of blowing pipe orifices 142 that blow downward on both sides of the film. A corresponding blowing channel is provided on the third roller 103, so that the hanging film is flatter and more stable.

[0030] The film lowering mechanism 100 provided by the present invention has a first-stage gear 114 disposed at one end of the first roller 101, and a final-stage gear (not numbered in the figure) disposed at one end of the third roller 103, the first-stage gear 114 is connected to the final-stage gear, the first roller 101 drives the third roller 103 to rotate simultaneously, and the linear speeds of the first roller 101 and the third roller 103 are the same. Preferably, the lower membrane mechanism 100 provided by the present invention further includes a first gear 115, a second gear (not numbered in the figure), a third gear (not numbered in the figure), a fourth gear 116 and a fifth gear 117, the first gear 115 is located below the first-stage gear 114 and meshes with the first-stage gear 114, the second gear is located on one side of the first gear 115 and rotates coaxially with the first gear 115, the third gear is arranged below the second gear and is connected to the second gear through a chain 118, the fourth gear 116 is located on one side of the third gear and rotates coaxially with the third gear, the final gear is located on one side of the fourth gear 116 and meshes with the fourth gear 116, the fifth gear 117 is located below the fourth gear 116, the second gear and the fifth gear 117 are the two ends of the chain 118 transmission, and only one side of the third gear is meshed with the inner side of the chain 118. Preferably, in the film lowering mechanism 100 provided by the present invention, a swing shaft 119 is provided above the movable cutter 108, a pair of rotating arms 120 are installed on the swing shaft 119, the movable cutter 108 is installed at the lower end of the pair of rotating arms 120, a swing arm 121 is provided at one end of the swing shaft 119, a driving component 122 is provided above the swing shaft 119, the upper end of the swing arm 121 is connected to the output end of the driving component 122, the lower end of the swing arm 121 is fixed to the swing shaft 119, the driving component 122 drives the swing arm 121 to swing, the swing arm 121 drives the swing shaft 119 to rotate, the rotating shaft drives the rotating arm 120 to swing, the rotating arm 120 drives the movable cutter 108 to cut the film, and the movable cutter 108 cooperates with the fixed cutter 107 to produce a shearing motion. The driving component 122 can also be a cylinder or a push rod motor. The rotating arm 120 is provided with a return spring 129 for returning the movable cutter 108 , and the return spring 129 is a pair.

[0031] Preferably, in the lower film mechanism 100 provided by the present invention, a pair of adjustment columns 123 are correspondingly installed below the two side plates 104, and a pair of middle adjustment seats 124 are arranged on the adjustment columns 123. The third roller 103, the rolling component 105, the fixed cutter 107 and the movable cutter 108 are installed between the two middle adjustment seats 124. The adjustment columns 123 are also provided with a pair of lower adjustment seats 125, and the lower adjustment seats 125 are located below the middle adjustment seats 124. , the lower film component 109 is installed between the two lower adjustment seats 125, the adjustment column 123 is provided with a rack 130, and the middle adjustment seat 124 and the lower adjustment seat 125 are both provided with a rotating handle 126. When the rotating handle 126 is tightened, the middle adjustment seat 124 / lower adjustment seat 125 is locked with the rack 130, so that the middle adjustment seat 124 / lower adjustment seat 125 is fixed at a certain height position of the adjustment column 123, and the fixed column 113 is installed between the two middle adjustment seats 124. The lower film mechanism 100 provided by the present invention also includes a connecting rod 127, which is installed between the two side plates 104, and a connecting block 128 is provided on the connecting rod 127. The connecting block 128 is arranged in parallel with the film transported from the outside, and the connecting block 128 is provided on the connecting rod 127 to play a certain receiving role. The film passes through the connecting rod 127 and then reaches the first roller 101.

[0032] The present invention uses the first roller 101 as an active roller, which is driven by a roller motor 131, and the second roller 102 as a driven roller. The pushing component 110 pushes the second roller 102 to lean against the first roller 101 (the central axes of the first roller 101 and the second roller 102 are on the same horizontal plane), so as to clamp the film for film stretching. The roller 106 of the rolling component 105 also cooperates with the third roller 103, and the film passes between the two, and the roller 106 and the third roller 103 rotate accordingly. Since the roller 106 is relatively small (relative to the small pulley), the contact area between the roller 106 and the film is also small. The clamping force between the roller 106 of the rolling component 105 and the third roller 103 is smaller than the clamping force between the first roller 101 and the second roller 102. The first roller 101 rotates simultaneously with the third roller through a gear transmission group, and the roller 106 of the rolling component 105 exists as a driven component to realize the simultaneous rotation of the upper and lower rollers. At the same time, the linear speeds of the first roller 101, the second roller 102 and the third roller 103 are consistent. While the upper and lower rollers pull the film downward, the driving component 122 intermittently drives the movable cutter 108 to move, thereby shearing the film. The present invention can also adjust the shearing position of the film by adjusting the upper and lower positions of the middle adjustment seat 124, and adjust the spacing between the shearing position and the limit plate by adjusting the upper and lower positions of the lower adjustment seat 125.

[0033] In summary, the present invention can quickly and smoothly perform film sleeving on the box body to be encapsulated, and can quickly perform corner folding and edge ironing on the film corners at the rear end, left end, and right end of the encapsulated box body, which is conducive to the rapid, stable and automated progress of the encapsulation production.

[0034] It can be understood that for those of ordinary skill in the art, equivalent substitutions or changes can be made according to the technical solution of the present invention and its inventive concept, and all such changes or substitutions should fall within the protection scope of the claims appended to the present invention.

Claims

1. A hemming type corner folding device, characterized in that, It includes a lower film mechanism and a corner folding and edge ironing mechanism. The lower film mechanism vertically suspends a film flatly in front of the box body to be packaged. During the forward movement of the box body to be packaged, the box body is sleeved with the film. The corner folding and edge ironing mechanism performs corner folding on it. The corner folding and edge ironing mechanism includes a pair of front folding plates, a pair of rear folding mechanisms, a bottom lining plate that can move up and down, and a rear ironing plate that can be flipped. The two front folding plates are respectively clamped on both sides of the box body to be packaged. The two rear folding mechanisms are respectively clamped on both sides of the box body to be packaged. The rear folding mechanism is located on the input side of the front folding plate. The bottom lining plate and the rear ironing plate are both located on the input side of the front folding plate. The bottom lining plate and the rear ironing plate cooperate to iron-seal the rear-end film of the box body to be packaged, and at the same time push the box body to be packaged forward. The front folding plates and the rear folding mechanisms fold the films on both sides of the box body to be packaged inwards. The rear folding mechanism includes a rear folding plate, an L-shaped connecting plate, a rear folding track, and a rear folding slider. The rear folding plate is installed on the L-shaped connecting plate. The L-shaped connecting plate is installed on the rear folding slider. The rear folding slider is slidably installed on the rear folding track. The lower film mechanism includes a first roller, a second roller, and a pair of side plates. The first roller and the second roller are installed in parallel between the two side plates. A roller motor is installed on one side plate. The roller motor drives the first roller to rotate. A third roller and at least a pair of rolling components are arranged below the first roller and the second roller. Rollers are arranged on the rolling components. The rollers are arranged in parallel with the third roller. A fixed cutting knife is arranged below the third roller or the rolling components. A swingable moving cutting knife is arranged on one side of the third roller or the rolling components. A lower film component is arranged below the fixed cutting knife. The film passes through between the first roller and the second roller, between the third roller and the rolling components, and the lower film component from top to bottom in sequence. A blowing component is also arranged above the third roller and the rolling components. The blowing component includes a plurality of air blowing pipe orifices located on both sides of the film.

2. The edge-ironing type corner folding device according to claim 1, wherein The rear folding mechanism further includes a rear folding cylinder. The output end of the rear folding cylinder is connected to the rear folding slider and drives the rear folding plate to move back and forth.

3. The edge-ironing type corner folding device according to claim 1, wherein The front folding plate is a wedge-shaped plate, and the width of the input side is smaller than that of the output side.

4. The edge-ironing type corner folding device according to claim 3, wherein, The input end of the front folding plate has a bending transition part that flips outwards.

5. The hemming type corner folding device according to claim 1, wherein, The corner folding and edge ironing mechanism further includes a pair of bottom lining slide rails. The bottom lining plate is slidably installed on the bottom lining slide rails.

6. The edge-ironing type corner folding device according to claim 1, wherein The corner folding and edge ironing mechanism further includes an upper cover plate and an upper support. The two ends of the upper cover plate are rotatably installed on the upper support. The rear ironing plate is vertically fixed on the upper cover plate and flips together with the upper cover plate.

7. The edge-ironing type corner folding device according to claim 1, characterized in that, The corner folding and edge ironing mechanism further includes a pair of side corner folding components, which are located at the output end of the front folding plate. The side corner folding components include a valley-shaped plate, a lower folding crescent plate, and an upper folding crescent plate. There is a gap between the upper folding crescent plate and the lower folding crescent plate and the valley-shaped plate for the film corners on both sides of the box to be packaged to pass through. A gap is formed between the lower folding crescent plate and the valley-shaped downward part of the valley-shaped plate, and a gap is formed between the upper folding crescent plate and the valley-shaped upward part of the valley-shaped plate, so that the upper and lower film corners on both sides of the box to be packaged pass through the gaps between the lower folding crescent plate and the valley-shaped plate and between the upper folding crescent plate and the valley-shaped plate respectively to complete the corner folding.

8. The hemming type corner folding device according to claim 7, wherein, The corner folding and edge ironing mechanism further includes a pair of left and right ironing plates, which are located at the output end of the side corner folding components.

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