Hot melting sealing device for food packaging bag preparation

Abstract

The invention discloses a hot-melting sealing device for food packaging bag preparation, relates to the technical field of hot-melting sealing, and aims to solve the problems that in the heat-sealing process of materials, due to the plastic characteristics of the materials, the materials are kept in a stretching state in the conveying process and have certain resilience force after being stopped being conveyed, the materials are pulled to rebound in the heat-sealing process, and the materials are not prone to deformation in the heat-sealing process. The materials are clamped in one step before heat sealing through the matching between the convex strips and the groove strips, so that the situation that the materials are in a stretching state in the conveying process due to the plastic characteristics of the materials after being externally connected with conveying equipment and stopping driving the materials and have certain resilience force after being stopped conveying, and the materials are pulled to rebound in the heat sealing process is avoided; and meanwhile, after the material is clamped, the material is prevented from moving, so that the heat sealing position is more accurate.

Description

Technical Field

[0001] The invention relates to the technical field of hot-melt sealing, in particular to a hot-melt sealing device for preparing food packaging bags. Background Art

[0002] At present, hot melt sealing is a common sealing method for packaging bags. It uses heat energy to melt and fuse the sealing part of the packaging bag to achieve the sealing process. Specifically, hot melt sealing is to raise the temperature to a certain level through a heating element or heat conduction method, so that the sealing part of the packaging bag reaches a molten state, and after cooling, a solid seal is formed to prevent leakage of the contents; In the existing heat sealing device, there is no restriction on the material during heat sealing, so the material remains in a stretched state during transportation due to its own plastic properties. After the transportation is stopped, it has a certain resilience, which pulls the material to rebound during the heat sealing process, causing the material to break and deform during the heat sealing process. Summary of the invention

[0003] To achieve the above objectives, the present invention is implemented through the following technical solutions: A hot melt sealing device for preparing a food packaging bag, comprising: The frame body comprises a frame, a support plate is connected to the center of the surface of the frame by bolts, an axial hole is opened at the center of the surface of the support plate, a hydraulic cylinder is riveted inside the frame, an output end of the hydraulic cylinder passes through the support plate from the axial hole and extends to the other side, and a coupling is fixedly installed at the output end of the hydraulic cylinder; The outer side of the frame is sequentially arranged with an unwinding mechanism, a flattening mechanism and a heat-sealing mechanism from top to bottom, the surface of the unwinding mechanism is provided with rivets, and the unwinding mechanism is used to fix the heat-sealing material of the roll packaging bag, the unwinding mechanism is fixedly mounted on the top of the frame by rivets, the flattening mechanism is slidably fitted with the unwinding mechanism, the bottom end of the flattening mechanism is slidably fitted with the heat-sealing mechanism, and the sliding shaft on the surface of the heat-sealing mechanism is fixedly connected with the hydraulic cylinder by a coupling; Among them, the heat sealing mechanism also includes a fixed plate, a sliding rod and a sliding plate, there are four sliding rods, which are symmetrically installed at the corners of the fixed plate, and the fixed plate is fixedly connected to the supporting plate through the sliding rod, the outer side of the sliding plate is symmetrically provided with sliding holes along the center of the axis, the sliding holes of the sliding plate are slidably adapted to the surface of the sliding rod, an electric heating strip is installed between the opposite surfaces of the sliding plate and the fixed plate, there are two electric heating strips, two of which are arranged at the same height between the opposite surfaces of the fixed plate and the sliding plate, a fixed block is clamped on the top of the surface of the fixed plate, the fixed block is fixedly connected to a connecting plate near one end of the sliding plate, the surface of the connecting plate is symmetrically provided with column holes, a sliding column is slidably connected to the column hole of the connecting plate, and one end of the sliding column A groove bar is welded, a connecting block is welded at the top center of the slide plate, a convex strip is welded on one end of the connecting block close to the fixed plate, a convex strip is provided with a bulge on one end of the convex strip close to the groove bar, and a groove is provided on one end of the groove bar close to the convex strip, the bulge of the convex strip is matched with the groove of the groove bar, and through the adaptation between the convex strip and the groove bar, the material is clamped before heat sealing, so as to avoid that after the external conveying equipment stops driving the material, the material remains in a stretched state during the conveying process due to its own plastic properties, and after the conveying stops, it has a certain resilience, which pulls the material in the heat sealing process to rebound, causing the material to break and deform during the heat sealing process. At the same time, after the material is clamped, the movement of the material is avoided, so that the heat sealing position is more accurate.

[0004] Preferably, a rubber ring is sleeved on the surface of the sliding column, and the rubber ring is located between the connecting plate and the groove bar. The deformation characteristics of the rubber material of the rubber ring can buffer the pressure during the pressure clamping process to avoid excessive pressure, which may cause damage to the sharp edges of the gaps between the groove bar and the convex bar of the material. At the same time, the groove bar and the convex bar are protected to avoid breakage during the clamping process. A fixing ring is welded at the center of the surface of the sliding rod, and a connecting strip is fixedly installed on the top of the fixing ring. A slot block is welded on the end of the connecting strip away from the fixing ring. An arc groove is opened on the surface of the slot block. The arc groove of the slot block is connected to the rotating arm through the connection. In the process of transferring the material from the leveling mechanism to the heat sealing mechanism, the rotating arm slides in the arc groove of the slot block. When the material is blocked during the transmission process, the rotating arm can slide in the arc groove of the slot block to change the angle of the rotating arm and obtain a buffer space to avoid the material from breaking during the transmission process. At the same time, after heat sealing, the material is adhered to the electric heating strip. At this time, the hot melt part of the material is driven by the electric heating strip to rotate the rotating arm. During the rotation, the material is pressed by the gravity of the rotating arm. During the separation of the electric heating strip, the material adhered to the electric heating strip is separated from the electric heating strip by force to avoid transmission after adhesion and damage to the material.

[0005] Preferably, the leveling mechanism includes a rotating arm, the bottom end of the surface of the rotating arm is slidably connected at the arc groove of the groove block, there are two rotating arms, and a corrugated plate is slidably connected between the rotating arms, two corrugated plates are arranged between the rotating arms, and corrugated protrusions are arranged on the relative surfaces of the corrugated plates, through the corrugated protrusions of the corrugated plates, during the process of the packaging bag material passing through, the material is deformed and transmitted in a corrugated state, so that the overlapping parts of the folds in the material are unfolded, so as to avoid direct heat sealing of the overlapping parts of the folds, resulting in a large number of defective products in the finished packaging bags, and the non-opposite surfaces of the corrugated plates are fixedly connected with a connecting column, the surface of the connecting column is slidably connected to the limiting plate, and the connecting column is located at the center of the limiting plate, and the end of the limiting plate close to the rotating arm is fixedly connected to the surface of the rotating arm, and the surface of the connecting column is clamped with a rubber tube, and the end of the rubber tube close to the limiting plate is in contact with the surface of the limiting plate.

[0006] Preferably, the top end of the rotating arm is rotatably connected to a rotating plate, the bottom end of the surface of the rotating plate is provided with a rotating hole, the rotating arm rotates at the rotating hole of the rotating plate, the surface of the rotating plate is provided with a sliding groove, and the sliding groove is located above the rotating hole, the sliding groove of the rotating plate is slidably connected with a sliding groove block, and the sliding groove block is installed with two at the sliding groove of the rotating plate, the surface of the sliding groove block is provided with a rod hole, and the rod hole of the lower sliding groove block is fixedly connected to a limiting column, the surface of the limiting column is slidably connected to the rod hole of the upper sliding groove block, and the surface of the limiting column is sleeved with a buffer The punch sleeve, the buffer sleeve is located between the slide blocks. Through the buffering property of the buffer sleeve, when a jam occurs between the pressing cylinder and the material, since the material is still pulled by the conveying equipment, the traction force is transmitted to the pressing cylinder through the material, driving the pressing cylinder to compress the buffer sleeve to deform, and move down for buffering, so as to avoid stretching the material and making the material thinner after stretching, which affects the quality of the finished packaging bag. The inner wall of the slide block is welded with a perforated plate, and the surface of the perforated plate is symmetrically provided with cylinder holes. The cylinder hole of the orifice plate is rotatably connected with a pressing cylinder, and the surface of the pressing cylinder is made of rubber material.

[0007] Preferably, the unwinding mechanism includes a screw, the surface of the screw is symmetrically provided with thread grooves, the surface of the screw is sleeved with a fixing frame, the end of the fixing frame away from the screw is riveted to the top of the surface of the frame, one end of the screw is provided with a chuck, and the other end of the screw is threadedly connected with a nut, the thread groove of the screw is threadedly connected with a screw sleeve, and the surface of the screw is sleeved with a chuck, and the chuck is pressurized on both sides of the surface of the rolled material under the restriction of a spring and the screw sleeve, so that the material is released under the restriction of the chuck, so as to avoid the deviation of the released material on both sides during the material release process, resulting in large-area wrinkle overlap during the transmission process, which makes it impossible to cut the heat-sealed material into packaging bags. The chuck is symmetrically installed on the surface of the screw, and a spring is provided between the chuck and the screw sleeve.

[0008] Preferably, one end of the spring close to the chuck is fixedly connected to the surface of the chuck, and one end of the spring close to the sleeve is provided with a gasket, and the end of the spring close to the sleeve is fitted with the surface of the sleeve through the gasket, and a semi-annular groove is provided on the surface of the chuck, and a pulley is slidably connected to the semi-annular groove of the chuck, and the surface of the pulley is clamped with the top end of the surface of the rotating plate, and an adjustment groove is symmetrically provided at the center of the surface of the screw, and a slider is slidably connected to the adjustment groove of the screw, and the sliders are symmetrically installed at the adjustment groove of the screw, and elastic plates are provided between the sliders, and the sliders are fixedly installed with a top plate via the elastic plate.

[0009] The present invention provides a hot melt sealing device for preparing food packaging bags. It has the following beneficial effects: First, the convex strips and the groove strips are adapted to clamp the material before heat sealing, so as to avoid that after the external conveying equipment stops driving the material, the material will remain in a stretched state during the conveying process due to its own plastic properties. After the conveying stops, the material has a certain resilience, which pulls the material to rebound during the heat sealing process, causing the material to break and deform during the heat sealing process. At the same time, after the material is clamped, the movement of the material is avoided, making the heat sealing position more accurate.

[0010] Second, the rotating arm and the slot block can slide in the arc groove of the slot block through the rotating arm. When the material is blocked during the transmission process, the rotating arm can slide in the arc groove of the slot block to change the angle of the rotating arm and obtain a buffer space to avoid the material from breaking during the transmission process. At the same time, after heat sealing, if the material is adhered to the electric heating strip, the hot melt part of the material is driven by the electric heating strip to rotate the rotating arm. During the rotation, the material is pressed by the gravity of the rotating arm. During the separation of the electric heating strip, the material adhered to the electric heating strip is separated from the electric heating strip by force to avoid transmission after adhesion and damage to the material.

[0011] 3. The corrugated plate, through the corrugated protrusions of the corrugated plate, causes the material to undergo a corrugated deformation transmission during the passage of the packaging bag material, so that the overlapping parts of the folds in the material are unfolded, thereby avoiding direct heat sealing of the overlapping parts of the folds, which would result in a large number of defective packaging bags after the finished product.

[0012] Fourth, the buffer sleeve, through the buffering property of the buffer sleeve, when a jam occurs between the pressing cylinder and the material, since the material is still pulled by the conveying equipment, the traction force is transmitted to the pressing cylinder through the material, driving the pressing cylinder to compress the buffer sleeve to deform, and move downward for buffering, thereby avoiding stretching of the material, making the material thinner after stretching, and affecting the quality of the finished packaging bag.

[0013] 5. The chuck applies pressure to the surfaces of both sides of the rolled material under the restriction of the spring and the screw sleeve, so that the material is released under the restriction of the chuck, thereby avoiding deviation of the released material on both sides without restriction during the material release process, and avoiding large-area wrinkles and overlaps during the transmission process, which makes it impossible to cut the heat-sealed material into packaging bags. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the external structure of a hot melt sealing device prepared for a food packaging bag of the present invention; Figure 2 A side view of the structure of a hot melt sealing device prepared for a food packaging bag of the present invention; Figure 3 It is a schematic diagram of the position structure of the heat sealing mechanism, the flattening mechanism and the unwinding mechanism of the present invention; Figure 4 It is a schematic diagram of the heat sealing mechanism structure of the present invention; Figure 5 For the present invention Figure 4 A magnified schematic diagram of structure A; Figure 6 It is a side view of the heat sealing mechanism structure of the present invention; Figure 7 It is a schematic diagram of the structure of the leveling mechanism of the present invention; Figure 8 It is a partial structural schematic diagram of the leveling mechanism of the present invention; Fig. 9 It is a schematic diagram of the structure of the unwinding mechanism of the present invention.

[0015] In the figure: 1, frame; 2, heat sealing mechanism; 3, leveling mechanism; 4, unwinding mechanism; 5, hydraulic cylinder; 11, frame; 12, support plate; 201, fixed plate; 202, fixed block; 203, connecting plate; 204, slide bar; 205, slide plate; 206, electric heating strip; 207, fixing ring; 208, groove block; 209, slide column; 210, groove strip; 211, rubber ring; 212, convex strip; 213, connecting block; 214, connecting strip; 301, rotating plate; 302, rubber tube; 303, pressing tube; 304, slide block; 305, limiting column; 306, buffer sleeve; 307, orifice plate; 308, rotating arm; 309, connecting column; 310, limiting plate; 311, corrugated plate; 41, fixing frame; 42, screw; 43, screw sleeve; 44, spring; 45, slider; 46, top plate; 47, chuck; 48, nut; 49, pulley. DETAILED DESCRIPTION

[0016] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0017] The first embodiment, as Figures 1 to 6 As shown, the present invention provides a technical solution: a hot melt sealing device for preparing a food packaging bag, comprising: The frame 1 has a frame 11 for supporting the structural assembly, a support plate 12 is bolted to the center of the surface of the frame 11, an axial hole is provided at the center of the surface of the support plate 12, a hydraulic cylinder 5 is riveted inside the frame 11, and a coupling is fixedly installed at the output end of the hydraulic cylinder 5; The unwinding mechanism 4 is provided with rivets on its surface, and is used to fix the heat-sealing material of the roll packaging bag. The unwinding mechanism 4 is fixedly installed on the top of the frame 1 by rivets, and a flattening mechanism 3 is installed at the bottom of the unwinding mechanism 4. The flattening mechanism 3 and the unwinding mechanism 4 are slidably installed. The heat-sealing mechanism 2 is installed at the bottom of the flattening mechanism 3. The sliding shaft on the surface of the heat-sealing mechanism 2 is fixedly connected to the hydraulic cylinder 5 through a coupling. The unwinding mechanism 4, the flattening mechanism 3 and the heat-sealing mechanism 2 are arranged in sequence from top to bottom at the frame 11 of the frame 1; The frame 1 includes a frame 11, a support plate 12 is connected to the center of the surface of the frame 11 by bolts, an axial hole is opened at the center of the surface of the support plate 12, a hydraulic cylinder 5 is riveted inside the frame 11, an output end of the hydraulic cylinder 5 passes through the support plate 12 from the axial hole and extends to the other side, and a coupling is fixedly installed at the output end of the hydraulic cylinder 5; The unwinding mechanism 4, the flattening mechanism 3 and the heat-sealing mechanism 2 are arranged in sequence from top to bottom on the outside of the frame 11. The surface of the unwinding mechanism 4 is provided with rivets, and the unwinding mechanism 4 is used to fix the heat-sealing material of the roll packaging bag. The unwinding mechanism 4 is fixedly installed on the top of the frame body 1 by rivets. The flattening mechanism 3 and the unwinding mechanism 4 are slidably adapted. The bottom end of the flattening mechanism 3 is slidably adapted to the heat-sealing mechanism 2. The sliding shaft on the surface of the heat-sealing mechanism 2 is fixedly connected to the hydraulic cylinder 5 by a coupling. The heat sealing mechanism 2 further comprises a fixed plate 201, a slide bar 204 and a slide plate 205. There are four slide bars 204, which are symmetrically installed at the corners of the fixed plate 201. The fixed plate 201 is fixedly connected to the support plate 12 through the slide bars 204. The slide plates 205 are symmetrically provided with slide holes along the center of the axis. The hydraulic cylinder 5 is connected so that the hydraulic cylinder 5 drives the slide plate 205 to reciprocate on the surface of the slide bar 204, so that the slide plate 205 drives the electric heating strip 206 at the center position to continuously approach the electric heating strip 206 at the center position of the fixed plate 201, and the electric heating strip 206 at the center position of the fixed plate 201 is continuously closed by the slide bars 204. The electric heating strips 206 after being electrically heated to a high temperature are squeezed by the hydraulic cylinder 5 after applying pressure, and the packaging bag materials passing through are continuously reciprocated to perform intermittent heat sealing work, so that the heat-sealed materials can be cut to form independent packaging bags. The sliding hole of the slide plate 205 is slidably adapted to the surface of the slide bar 204. The electric heating strip 206 is installed between the opposite surfaces of the slide plate 205 and the fixed plate 201. There are two electric heating strips 206, and the two electric heating strips 206 are arranged at the same height and opposite to each other between the opposite surfaces of the fixed plate 201 and the slide plate 205. The fixed plate 201 is provided with a plurality of electric heating strips 206, and the electric heating strips 206 are arranged at the same height and opposite to each other between the opposite surfaces of the fixed plate 201 and the slide plate 205. A fixing block 202 is clamped on the top of the surface of 01, and a connecting plate 203 is fixedly connected to the fixing block 202 at one end near the slide plate 205. Column holes are symmetrically opened on the surface of the connecting plate 203, and a sliding column 209 is slidably connected to the column hole of the connecting plate 203. A groove 210 is welded to one end of the sliding column 209. A connecting block 213 is welded at the top center of the slide plate 205. A convex strip 212 is welded to one end of the connecting block 213 near the fixing plate 201. A convex strip 212 is provided with a protrusion at one end near the groove strip 210, and the groove strip 210 is close to the convex strip 212. A groove is provided at the end, and the protrusion of the convex strip 212 is matched with the groove of the groove strip 210. During the heat sealing process, when the slide plate 205 approaches the fixed plate 201, the slide plate 205 drives the convex strip 212 through the connecting block 213, so that the convex strip 212 continues to approach the groove strip 210, and the convex block of the convex strip 212 is matched with the groove of the groove strip 210, so that the convex strip 212 and the groove strip 210 clamp the packaging bag material first during the heat sealing process, and the material is clamped by the curved surface gap between the convex block of the convex strip 212 and the groove of the groove strip 210.

[0018] A rubber ring 211 is sleeved on the surface of the sliding column 209, and the rubber ring 211 is located between the connecting plate 203 and the groove 210. During the clamping and heat sealing pressure process, the clamping force on the material between the convex strip 212 and the groove 210 is buffered by the deformation of the rubber ring 211. During the buffering deformation process, the sliding column 209 slides in the column hole of the connecting plate 203. A fixing ring 207 is welded at the center of the surface of the sliding rod 204, and a connecting strip 214 is fixedly installed on the top of the fixing ring 207. A groove block 208 is welded on the end of the connecting strip 214 away from the fixing ring 207, and an arc groove is opened on the surface of the groove block 208.

[0019] The second embodiment is based on the first embodiment. Figures 7 and 8As shown, the leveling mechanism 3 includes a rotating arm 308, the bottom end of the surface of the rotating arm 308 is slidably connected at the arc groove of the groove block 208, there are two rotating arms 308, and a corrugated plate 311 is slidably connected between the rotating arms 308, two corrugated plates 311 are arranged between the rotating arms 308, and the opposite surfaces of the corrugated plates 311 are provided with corrugated protrusions. After the material is pressed by the pressing cylinder 303, it enters the gap between the corrugated plates 311, and the corrugated protrusions of the corrugated plates 311 adjust the wrinkles existing in the passing packaging bag material. The corrugated plates 311 1 is fixedly connected with a connecting column 309, and the surface of the connecting column 309 is slidably connected with a limiting plate 310, and the connecting column 309 is located at the center of the limiting plate 310, and one end of the limiting plate 310 close to the rotating arm 308 is fixedly connected to the surface of the rotating arm 308, and the surface of the connecting column 309 is clamped with a rubber tube 302, and when passing through the gap of the corrugated plate 311, it is adjusted by the corrugated protrusion of the corrugated plate 311 to eliminate wrinkles, and one end of the rubber tube 302 close to the limiting plate 310 is in contact with the surface of the limiting plate 310.

[0020] The top of the rotating arm 308 is rotatably connected to the rotating plate 301. The bottom end of the surface of the rotating plate 301 is provided with a rotating hole. The rotating arm 308 rotates at the rotating hole of the rotating plate 301. The surface of the rotating plate 301 is provided with a slide groove, and the slide groove is located above the rotating hole. The slide groove of the rotating plate 301 is slidably connected with a slide groove block 304. When glue adhesion occurs between the rolled materials and the rotation release is blocked, the material generates a pulling force on the pressing cylinder 303, and the pulling force is transmitted to the rotating plate 301 through the orifice plate 307 and the slide groove block 304, so that the rotating plate 301 slides along the semi-annular groove of the chuck 47 under the drive of the pulley 49 to adjust the angle. Two slide groove blocks 304 are installed at the slide groove of the rotating plate 301. A rod hole is provided on the surface of the slide block 304, and a limiting column 305 is fixedly connected to the rod hole of the lower slide block 304, and the surface of the limiting column 305 is slidably connected to the rod hole of the upper slide block 304. A buffer sleeve 306 is sleeved on the surface of the limiting column 305, and the buffer sleeve 306 is located between the slide blocks 304. A perforated plate 307 is welded to the inner wall of the slide block 304, and cylindrical holes are symmetrically provided on the surface of the orifice plate 307. A pressure cylinder 303 is rotatably connected to the cylindrical hole of the orifice plate 307. The surface of the pressure cylinder 303 is made of rubber material. The material first passes through the pressure cylinder 303, and the pressure generated by the deformation of the rubber material on the surface of the pressure cylinder 303 presses the passed material.

[0021] The third embodiment is based on the first and second embodiments. Fig. 9As shown, the unwinding mechanism 4 includes a screw rod 42, the surface of which is symmetrically provided with thread grooves, a fixing frame 41 is sleeved on the surface of the screw rod 42, and one end of the fixing frame 41 away from the screw rod 42 is riveted to the top of the surface of the frame 11, and a screw sleeve 43, a spring 44 and a clamping plate 47 on one side are installed, and then the rolled packaging bag material is sleeved on the surface of the screw rod 42, and the top plate 46 and the slider 45 at the center position are pressed according to the hole size of the center of the material to deform the elastic plate, and the slider 45 is pressed to slide in the adjustment groove of the screw rod 42 for adjustment. , then install the screw sleeve 43, spring 44 and chuck 47 on the other side, and then clamp the pulley 49 with the leveling mechanism 3 after installation, and then connect it with the screw rod 42 through the nut 48, and fix the screw rod 42 in the fixing frame 41, a chuck is provided at one end of the screw rod 42, and a nut 48 is threadedly connected to the other end of the screw rod 42, a screw sleeve 43 is threadedly connected to the thread groove of the screw rod 42, and a chuck 47 is provided on the surface of the screw rod 42, and the chuck 47 is symmetrically installed on the surface of the screw rod 42, and a spring 44 is provided between the chuck 47 and the screw sleeve 43.

[0022] One end of the spring 44 close to the chuck 47 is fixedly connected to the surface of the chuck 47, and one end of the spring 44 close to the screw sleeve 43 is provided with a gasket, and one end of the spring 44 close to the screw sleeve 43 fits with the surface of the screw sleeve 43 through the gasket. The surface of the chuck 47 is provided with a semi-annular groove, and a pulley 49 is slidably connected at the semi-annular groove of the chuck 47. The surface of the pulley 49 is snap-fitted with the top of the surface of the rotating plate 301. An adjustment groove is symmetrically provided at the center of the surface of the screw 42, and a slider 45 is slidably connected at the adjustment groove of the screw 42. By adjusting the screw sleeve 43, the position of the screw sleeve 43 is changed. After the chuck 47 contacts the packaging material, the compression degree of the spring 44 is controlled, and the contact pressure of the chuck 47 on the material surface is controlled. When the external conveying equipment pulls the packaging bag material, the rolled packaging bag material sleeved on the surface of the screw 42 rotates to continuously release the material. The sliders 45 are symmetrically installed at the adjustment groove of the screw 42, and elastic plates are provided between the sliders 45. The sliders 45 are fixedly installed with a top plate 46 through the elastic plates.

[0023] When in use, a worker puts the unheat-sealed roll packaging bag material into the unwinding mechanism 4, and makes the packaging material pass through the flattening mechanism 3. The flattening mechanism 3 adjusts and flattens the passed packaging bag material, so that the surface of the packaging bag material is flat after entering the heat sealing mechanism 2 for heat sealing. After heat sealing, the packaging bag material passes through the bottom of the heat sealing mechanism 2, and is driven to move by an external conveying device, so that the roll packaging bag material rotates in the unwinding mechanism 4, and the material is transmitted and passes through the flattening mechanism 3 and the heat sealing mechanism 2 in sequence.

[0024] In the unwinding mechanism 4, the screw sleeve 43, spring 44 and chuck 47 on one side are installed, and then the rolled packaging bag material is inserted into the surface of the screw 42. The top plate 46 and the slider 45 at the center position are pressed according to the aperture size of the material center to deform the elastic plate, and the slider 45 is pressed to slide in the adjustment groove of the screw 42 for adjustment. Then the screw sleeve 43, spring 44 and chuck 47 on the other side are installed. After installation, the pulley 49 is clamped with the leveling mechanism 3, and then connected to the screw 42 through the nut 48 to fix the screw 42 in the fixed frame 41. By adjusting the screw sleeve 43, the position of the screw sleeve 43 is changed. After the chuck 47 contacts the packaging material, the compression degree of the spring 44 is controlled, and the contact pressure of the chuck 47 on the material surface is controlled. When the external conveying equipment pulls the packaging bag material, the rolled packaging bag material sleeved on the surface of the screw 42 rotates to continuously release the material.

[0025] In the process of continuous material release, the material first passes through the leveling mechanism 3, so that the material first passes through the pressing cylinder 303, and the pressure generated by the deformation of the rubber material on the surface of the pressing cylinder 303 compresses the passed material. At the same time, a glue-like adhesion occurs between the rolled materials, causing the rotation release to be blocked. The material generates a pulling force on the pressing cylinder 303, and the pulling force is transmitted to the rotating plate 301 through the orifice plate 307 and the slide block 304, so that the rotating plate 301 slides along the semi-annular groove of the chuck 47 driven by the pulley 49 to adjust the angle. After the material is compressed by the pressing cylinder 303, it enters the gap between the corrugated plates 311, and the corrugated protrusions of the corrugated plates 311 adjust the wrinkles in the passing packaging bag material. When passing through the gap of the corrugated plates 311, the corrugated deformation is adjusted along with the corrugated protrusions of the corrugated plates 311 to eliminate the wrinkles.

[0026] After passing through the leveling mechanism 3, the material enters the heat sealing mechanism 2 and is connected to the hydraulic cylinder 5 through the rotating shaft in the heat sealing mechanism 2, so that the hydraulic cylinder 5 drives the slide plate 205 to reciprocate on the surface of the slide bar 204, so that the slide plate 205 drives the electric heating strip 206 at the center position to continuously approach the electric heating strip 206 at the center position of the fixed plate 201, and the electric heating strips 206 after being electrically heated to a high temperature are squeezed by the hydraulic cylinder 5, and the packaging bag material passing through is continuously reciprocated to perform intermittent heat sealing work, so that the heat-sealed material can be cut to form independent packaging bags. In the process of heat sealing, the slide plate 205 and the fixed plate When the slide plate 205 approaches the groove 210, the slide plate 205 drives the convex strip 212 through the connecting block 213, so that the convex strip 212 is continuously approached to the groove 210, and the convex block of the convex strip 212 is adapted to the groove of the groove 210, so that the convex strip 212 and the groove 210 clamp the packaging bag material first during the heat sealing process, and clamp the material through the curved surface gap between the convex block of the convex strip 212 and the groove of the groove 210. At the same time, during the clamping and heat sealing pressure process, the clamping force of the convex strip 212 and the groove 210 on the material is buffered by the deformation of the rubber ring 211, and the sliding column 209 slides in the column hole of the connecting plate 203 during the buffering deformation process.

[0027] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A hot melt sealing device for preparing food packaging bags, characterized in that: include: A frame (1), the frame (1) comprising a frame (11), a support plate (12) being connected at the center of the surface of the frame (11) by bolts, an axial hole being provided at the center of the surface of the support plate (12), a hydraulic cylinder (5) being riveted inside the frame (11), an output end of the hydraulic cylinder (5) passing through the support plate (12) from the axial hole and extending to the other side, and a coupling being fixedly mounted at the output end of the hydraulic cylinder (5); The outer side of the frame (11) is arranged in order from top to bottom with an unwinding mechanism (4), a flattening mechanism (3) and a heat-sealing mechanism (2); the surface of the unwinding mechanism (4) is provided with rivets, and the unwinding mechanism (4) is used to fix the heat-sealing material of the rolled packaging bag; the unwinding mechanism (4) is fixedly mounted on the top of the frame (1) by rivets; the flattening mechanism (3) and the unwinding mechanism (4) are slidably matched; the bottom end of the flattening mechanism (3) and the heat-sealing mechanism (2) are slidably matched; and the sliding shaft on the surface of the heat-sealing mechanism (2) is fixedly connected to the hydraulic cylinder (5) by a coupling; The heat sealing mechanism (2) further comprises a fixed plate (201), a sliding rod (204) and a sliding plate (205), wherein there are four sliding rods (204) which are symmetrically installed at the corners of the fixed plate (201), and the fixed plate (201) is fixedly connected to the support plate (12) via the sliding rods (204), and sliding holes are symmetrically opened on the outer side of the sliding plate (205) along the center of the axis, and the sliding holes of the sliding plate (205) are slidably adapted to the surface of the sliding rods (204), and an electric heating strip (206) is installed between the opposing surfaces of the sliding plate (205) and the fixed plate (201), and there are two electric heating strips (206), wherein the two electric heating strips (206) are arranged at equal heights and opposite to each other between the opposing surfaces of the fixed plate (201) and the sliding plate (205), and the fixed plate (201) is provided with a plurality of electric heating strips (206). A fixing block (202) is clamped at the top of the surface, and a connecting plate (203) is fixedly connected to one end of the fixing block (202) close to the slide plate (205). Column holes are symmetrically opened on the surface of the connecting plate (203), and a sliding column (209) is slidably connected to the column hole of the connecting plate (203). A groove (210) is welded to one end of the sliding column (209), and a connecting block (213) is welded at the top center of the slide plate (205). A convex strip (212) is welded to one end of the connecting block (213) close to the fixing plate (201), and a convex strip (212) is provided at one end of the convex strip (212) close to the groove strip (210), and a groove is provided at one end of the groove strip (210) close to the convex strip (212), and the convex strip (212) is matched with the groove of the groove strip (210).

2. A hot melt sealing device for preparing a food packaging bag according to claim 1, characterized in that: A rubber ring (211) is sleeved on the surface of the sliding column (209), and the rubber ring (211) is located between the connecting plate (203) and the groove bar (210). A fixing ring (207) is welded at the center of the surface of the sliding rod (204), and a connecting bar (214) is fixedly installed on the top of the fixing ring (207). A groove block (208) is welded at one end of the connecting bar (214) away from the fixing ring (207), and an arc groove is opened on the surface of the groove block (208).

3. A hot melt sealing device for preparing a food packaging bag according to claim 2, characterized in that: The leveling mechanism (3) comprises a rotating arm (308), the bottom end of the surface of the rotating arm (308) being slidably connected to the arc groove of the groove block (208), there are two rotating arms (308), and a corrugated plate (311) is slidably connected between the rotating arms (308), two corrugated plates (311) are arranged between the rotating arms (308), and corrugated protrusions are arranged on the opposite surfaces of the corrugated plates (311), and a connecting column (309) is fixedly connected to the non-opposite surfaces of the corrugated plates (311).

4. A hot melt sealing device for preparing a food packaging bag according to claim 3, characterized in that: The surface of the connecting column (309) is slidably connected to the limiting plate (310), and the connecting column (309) is located at the center of the limiting plate (310); one end of the limiting plate (310) close to the rotating arm (308) is fixedly connected to the surface of the rotating arm (308); a rubber tube (302) is clamped on the surface of the connecting column (309); one end of the rubber tube (302) close to the limiting plate (310) is in contact with the surface of the limiting plate (310).

5. A hot melt sealing device for preparing a food packaging bag according to claim 4, characterized in that: The top end of the rotating arm (308) is rotatably connected to a rotating plate (301), a rotating hole is provided at the bottom end of the surface of the rotating plate (301), the rotating arm (308) rotates at the rotating hole of the rotating plate (301), a sliding groove is provided on the surface of the rotating plate (301), and the sliding groove is located above the rotating hole, a sliding groove block (304) is slidably connected at the sliding groove of the rotating plate (301), two sliding groove blocks (304) are installed at the sliding groove of the rotating plate (301), a rod hole is provided on the surface of the sliding groove block (304), and a limiting column (305) is fixedly connected to the rod hole of the lower sliding groove block (304).

6. A hot melt sealing device for preparing a food packaging bag according to claim 5, characterized in that: The surface of the limit column (305) is slidably connected to the rod hole of the upper slide block (304), and a buffer sleeve (306) is sleeved on the surface of the limit column (305). The buffer sleeve (306) is located between the slide blocks (304). An orifice plate (307) is welded to the inner wall of the slide block (304). The surface of the orifice plate (307) is symmetrically provided with cylindrical holes. A pressure cylinder (303) is rotatably connected to the cylindrical hole of the orifice plate (307), and the surface of the pressure cylinder (303) is made of rubber material.

7. A hot melt sealing device for preparing a food packaging bag according to claim 6, characterized in that: The unwinding mechanism (4) comprises a screw rod (42), the surface of the screw rod (42) being symmetrically provided with thread grooves, the surface of the screw rod (42) being sleeved with a fixing frame (41), one end of the fixing frame (41) being away from the screw rod (42) being riveted to the top end of the surface of the frame (11), one end of the screw rod (42) being provided with a chuck, and the other end of the screw rod (42) being threadedly connected with a nut (48).

8. The hot melt sealing device for preparing a food packaging bag according to claim 7, characterized in that: A threaded sleeve (43) is threadedly connected at the thread groove of the screw rod (42), a chuck (47) is sleeved on the surface of the screw rod (42), the chuck (47) is symmetrically installed on the surface of the screw rod (42), and a spring (44) is arranged between the chuck (47) and the threaded sleeve (43).

9. A hot melt sealing device for preparing a food packaging bag according to claim 8, characterized in that: One end of the spring (44) close to the chuck (47) is fixedly connected to the surface of the chuck (47), and one end of the spring (44) close to the screw sleeve (43) is provided with a gasket. The end of the spring (44) close to the screw sleeve (43) is fitted with the surface of the screw sleeve (43) through the gasket. A semi-annular groove is provided on the surface of the chuck (47), and a pulley (49) is slidably connected to the semi-annular groove of the chuck (47). The surface of the pulley (49) is fixedly connected to the top of the surface of the rotating plate (301).

10. The hot melt sealing device for preparing a food packaging bag according to claim 8, characterized in that: An adjustment groove is symmetrically provided at the center of the surface of the screw rod (42), a slider (45) is slidably connected to the adjustment groove of the screw rod (42), the slider (45) is symmetrically installed at the adjustment groove of the screw rod (42), an elastic plate is provided between the sliders (45), and the slider (45) is fixedly installed with a top plate (46) via the elastic plate.

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