A liquid film packaging machine

Abstract

The application relates to the field of packaging bags, in particular to a liquid film packaging machine which comprises a film winding mechanism for storing and discharging a film, a folding mechanism for folding the film discharged by the film winding mechanism, an edge sealing mechanism for sealing the edges of the folded film to form a packaging bag, a filling mechanism for filling liquid into the packaging bag after the edges of the film are sealed, a melting and cutting mechanism for cutting and separating the packaging bag after the liquid is filled and the edges of the packaging bag are sealed, and a transmission mechanism comprising a clamping assembly and a driving assembly, wherein the clamping assembly is used for clamping the packaging bag after the edges of the packaging bag are sealed, and the driving assembly is used for driving the clamping assembly to pull the clamped packaging bag from the folding mechanism to the melting and cutting mechanism. The application has the effect that the liquid film packaging machine can be applied to the packaging of long strip-shaped liquid packaging bags with longer length and larger length-width.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of packaging bags, in particular to a liquid film packaging machine. BACKGROUND

[0002] When the long strip-shaped oral liquid or other long strip-shaped bagged liquid is sealed into a packaging bag, a liquid film packaging machine is often used for sealing. The liquid film packaging machine includes a film winding mechanism, a folding mechanism, a conveying mechanism, a filling mechanism and a sealing and cutting mechanism. The conveying mechanism of the existing liquid film packaging machine is two conveying wheels. The folding mechanism folds the film and then heat-seals the edge to form a packaging bag. The two conveying wheels clamp the edge in the middle and then rotate the conveying wheels to convey the clamped edge. This conveying method is suitable for packaging bags with a length-width ratio of 2-6.

[0003] However, there is a need to produce packaging bags with a length-width ratio of 8, 9, 10 or even more. When the length of the packaging bag increases, the conveying distance of the above-mentioned conveying method increases in one action. The two sides of the packaging film may not be uniformly overlapped in the length direction during the pulling process, which may cause deviation due to tilting. More importantly, due to the flat and long shape of the packaging bag, the force is not evenly distributed during the pulling process, which may cause a non-vertical pulling force. When the original overlapping position of the two sides of the packaging film separates, the packaging film may expand after abutting, which may cause a leakage.

[0004] Therefore, the existing liquid film packaging machine is only suitable for sealing and packaging long strip-shaped bagged liquids with a short length and a small length-width ratio, and needs to be improved. SUMMARY

[0005] In order to improve the problem that the existing liquid film packaging machine is only suitable for sealing and packaging long strip-shaped bagged liquids with a short length and a small length-width ratio, the present application provides a liquid film packaging machine.

[0006] The liquid film packaging machine provided by the present application adopts the following technical solution:

[0007] A liquid film packaging machine, comprising:

[0008] a film winding mechanism for storing and releasing the film;

[0009] a folding mechanism for folding the film released by the film winding mechanism;

[0010] an edge sealing mechanism for heat-sealing the edge of the folded film to form a packaging bag;

[0011] a filling mechanism for filling liquid into the packaging bag after heat-sealing the edge;

[0012] A melting cutting mechanism is used to cut and separate the packaging bag after the liquid is injected and the edge is heat sealed and cut;

[0013] A transmission mechanism includes a clamping assembly for clamping the packaging bag after the edge is folded, and a driving assembly for driving the clamping assembly to pull the clamped packaging bag from the folding mechanism to the melting cutting mechanism.

[0014] By adopting the above technical scheme, the film is clamped by the clamping assembly, and then the film is directly pulled to the specified position by the driving assembly, which reduces the probability of film skewing and offsetting during transmission, makes the film with a larger aspect ratio and longer length more smooth during transmission, reduces the probability of liquid leakage after the film edge is formed into a packaging bag, improves the yield, and also improves the application range of films with different aspect ratios and lengths.

[0015] Optionally, it also includes a linkage mechanism, which includes a main drive shaft rotatably arranged and a linkage driving piece for driving the main drive shaft to rotate, the main drive shaft is provided with an edge sealing cam and a melting cutting cam, the edge sealing cam rotates to control the edge sealing mechanism to displace to clamp and heat seal the edge of the film or separate it, and the melting cutting cam rotates to control the melting cutting mechanism to displace to clamp and heat cut the packaging bag or separate it.

[0016] By adopting the above technical scheme, the edge sealing mechanism and the melting cutting mechanism are simultaneously controlled by the linkage mechanism, which improves the synchronization rate, reduces the number of driving sources, and reduces the cost.

[0017] Optionally, the folding mechanism includes a back plate and a shaping support plate, the shaping support plate is used to support the film to allow the filling mechanism to fill the liquid, the shaping support plate and the back plate form a film cavity, the film enters the film cavity and is folded and wrapped on the shaping support plate, the shaping support plate is arranged in a bent manner, and the two side edges of the film are overlapped at the bent portion of the shaping support plate; the back plate is provided with a shaping assembly, and the shaping assembly is used to press the film on the shaping support plate.

[0018] By adopting the above technical scheme, the film is supported by the shaping support plate, which facilitates the liquid filling of the filling mechanism, and the film is shaped on the shaping support plate by the shaping assembly, which makes the film more stable.

[0019] Optionally, the shaping assembly comprises at least two side folding plates arranged on the back plate, the plurality of side folding plates respectively press the film cover on both sides of the bending portion of the shaping support plate, and the edge side wall of the side folding plate extends from one side of the shaping support plate to the bending portion of the shaping support plate, and then extends to the other side of the bending portion of the shaping support plate to press the overlapping portion of the film. At least two roller wheels are arranged on the back plate, and the plurality of roller wheels are distributed on both sides of the bending portion of the shaping support plate and press the film on the shaping support plate.

[0020] By adopting the above technical scheme, the two ends of the film overlap are respectively pressed by the side folding plate cover, so that the position of the film overlap is more stable. The film is further extruded by the cooperation of the side folding plate and the roller wheel, which further improves the stability, reduces the probability of deformation of the film during transmission, and affects the subsequent edge sealing. It is more stable and not easy to deform again. Compared with the prior art, the overlap is more accurate.

[0021] Optionally, the edge sealing mechanism comprises a heating element, an edge sealing pressing frame and an edge sealing reset element. The heating element is arranged on the bending portion of the shaping support plate, so that the overlapping position of the film is on the heating element, and the overlapping position of the film is between the heating element and the edge sealing pressing frame. The edge sealing reset element is used to abut the edge sealing pressing frame on the edge sealing cam. The edge sealing cam rotates to displace the edge sealing pressing frame towards or away from the heating element to heat and fuse the overlapping position of the film.

[0022] By adopting the above technical scheme, the overlapping portion of the film is ironed and sealed by the edge sealing cam driving the heating element and the edge sealing pressing frame, which is convenient and fast.

[0023] Optionally, the driving assembly comprises a bevel gear set, a first connecting element and a second connecting element. The bevel gear set is arranged on the main drive shaft. The output shaft of the bevel gear set is connected to one end of the first connecting element. One end of the second connecting element is rotatably arranged on the other end of the first connecting element. The other end of the second connecting element is rotatably arranged on the clamping assembly to displace the clamping assembly and pull the packaging bag. The distance between the hinge of the first connecting element and the second connecting element and the output shaft of the bevel gear set is the first stroke. The distance between the hinge of the first connecting element and the second connecting element and the hinge of the second connecting element and the clamping assembly is the second stroke. The sum of the first stroke and the second stroke minus the difference between the first stroke and the second stroke is the maximum stroke of the clamping assembly.

[0024] By adopting the above technical scheme, the main drive shaft is linked with the clamping assembly through the bevel gear set, the first connecting piece and the second connecting piece, so that the edge sealing mechanism, the melting cutting mechanism and the driving assembly are all controlled by the main drive shaft, the synchronization rate is improved, the probability that the driving assembly pulls the film to cause damage to the film when the edge sealing mechanism and the melting cutting mechanism are still pressing the edge sealing is reduced, the stability is greatly improved, the probability that the film is not completely pulled and the edge sealing mechanism and the melting cutting mechanism press the film to seal and iron the film to cause damage to the film and repeated ironing and damage to the packaging bag is reduced, the yield is improved, and the synchronization rate between different processing steps is improved.

[0025] Optionally, the clamping assembly comprises a clamping driving piece rotatably arranged on the second connecting piece, a first chuck is arranged on the clamping driving piece, a second chuck is arranged on an output shaft of the clamping driving piece, the packaging bag is located between the first chuck and the second chuck, and the output shaft of the clamping driving piece drives the second chuck to displace towards the first chuck or away from the first chuck; a anti-sticking cam is arranged on the main drive shaft, and an anti-sticking piece is arranged on the clamping driving piece; the clamping driving piece is in abutment with the anti-sticking cam through the anti-sticking piece, and the clamping driving piece is driven to displace by the anti-sticking cam to make the packaging bag separate from the heating piece.

[0026] By adopting the above technical scheme, the clamping driving piece controls the first chuck and the second chuck to clamp the film, and then pulls the packaging bag formed by the edge sealing of the film outward to remove the adhesion between the packaging bag and the heating piece when the packaging bag is ironed and sealed on the heating piece, so that the resistance during subsequent pulling transmission is reduced, the probability of damage to the packaging bag is reduced, the stability of the packaging bag during transmission is further improved, the yield is improved, and the transmission of the packaging bag is smoother.

[0027] Optionally, a lead screw is rotatably arranged on the first connecting piece, an adjusting block is threadedly connected to the lead screw, the adjusting block is rotatably arranged on the second connecting piece, and the adjusting block is the hinge between the first connecting piece and the second connecting piece. The position of the adjusting block is adjusted by rotating the lead screw to adjust the maximum stroke.

[0028] By adopting the above technical scheme, the position of the adjusting block on the first connecting piece is controlled by rotating the lead screw, so that the distances of the first stroke and the second stroke are controlled, the maximum displacement of the clamping driving piece is controlled, the operability is improved, the adaptation range is expanded, and different lengths of packaging bags can be adapted.

[0029] Optionally, the melting cutting mechanism comprises a melting cutting frame and a hot melting piece slidingly arranged on the melting cutting frame and used for hot melting the packaging bag, at least two abutting strips are arranged on the melting cutting frame, a cutting knife for cutting the packaging bag is arranged between adjacent abutting strips, a melting cutting reset piece is arranged on the hot melting piece and used for abutting the hot melting piece against the melting cutting cam, the melting cutting cam rotates to drive the hot melting piece to move towards the cutting knife or away from the cutting knife, and the cutting knife and the abutting strips simultaneously abut the packaging bag against the hot melting piece.

[0030] By adopting the above technical scheme, the two abutting strips are used to seal the packaging bag, and then the cutting knife is used to cut the packaging bag between the two sealing positions, so that the sealing and cutting of the previous part of the packaging bag are simultaneously realized, and the next part of the packaging bag is also sealed, and then the next part of the packaging bag can be filled with liquid by the filling mechanism, which is convenient and fast.

[0031] Optionally, the film rolling mechanism comprises a rolling roller for rolling the film, a tensioning roller for tensioning the film, and a shearing roller, the shearing roller is provided with a shearing cutter ring for uniformly cutting the tensioned film into multiple parts, and the number of the folding mechanism, the edge sealing mechanism, the conveying mechanism and the melting cutting mechanism is multiple and corresponds to the number of the film cut by the shearing cutter ring.

[0032] By adopting the above technical scheme, the film is uniformly cut into multiple parts by the shearing cutter ring, and multiple films are simultaneously processed, so that the processing efficiency is greatly improved.

[0033] In summary, the present application has at least one of the following beneficial technical effects:

[0034] 1. The probability of film skewing and deviating during transmission is reduced, the film with a larger aspect ratio and a longer length is more smooth during transmission, the probability of liquid leakage after the film edge is sealed into a packaging bag is reduced, the yield is improved, and the application range of films with different aspect ratios and lengths is also improved.

[0035] 2. The edge sealing mechanism, the melting cutting mechanism and the driving assembly are all controlled by the main driving shaft, the synchronization rate is improved, the probability of film damage caused by the driving assembly pulling the film when the edge sealing mechanism and the melting cutting mechanism are still pressing the edge is reduced, the stability is greatly improved, the probability of film damage and repeated ironing caused by the edge sealing mechanism and the melting cutting mechanism pressing the film for sealing and ironing when the film is not completely pulled is also reduced, the yield is improved, and the synchronization rate between different processing steps is improved.

[0036] 3. The package bag is not adhered to the heating element when the edge is ironed and sealed on the heating element, the resistance during subsequent pulling transmission is reduced, so that the probability of damage to the package bag is reduced, the stability of the package bag during transmission is further improved, the yield is improved, and the transmission of the package bag is more smooth. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 is a schematic diagram of the overall structure of a liquid film packaging machine in the embodiment of the present application.

[0038] Figure 2 is a schematic diagram highlighting the positions of various mechanisms on the base frame.

[0039] Figure 3 is Figure 2 is an enlarged schematic diagram of position A in

[0040] Figure 4 is a schematic diagram highlighting the folding mechanism.

[0041] Figure 5 is a schematic diagram of the cross section along Figure 4 B-B line in

[0042] Figure 6 is Figure 4 is an enlarged schematic diagram of position C in

[0043] Figure 7 is a schematic diagram highlighting the edge sealing structure.

[0044] Figure 8 is Figure 7 is an enlarged schematic diagram of position D in

[0045] Figure 9 is a schematic diagram highlighting the driving assembly.

[0046] Figure 10 is Figure 9 is an enlarged schematic diagram of position E in

[0047] Figure 11 is Figure 7 is an enlarged schematic diagram of position F in

[0048] Figure 12 is a schematic diagram highlighting the melting cutting mechanism.

[0049] Figure 13 is Figure 12 is an enlarged schematic diagram of position G in

[0050] Figure 14 is a schematic diagram highlighting the melting cutting reset member.

[0051] Figure 15 isFigure 14 Enlarged structure schematic diagram at H in the middle.

[0052] Reference signs: 1, film winding mechanism; 11, winding roller; 12, tensioning roller; 13, shearing roller; 131, pressing roller; 132, shearing ring groove; 14, shearing knife ring; 2, folding mechanism; 21, back plate; 22, shaping support plate; 23, film cavity; 24, shaping assembly; 25, side stacking plate; 251, stacking plate through hole; 252, stacking plate buckle; 253, stacking plate spring; 26, roller pressing wheel; 3, edge sealing mechanism; 31, heating piece; 32, edge sealing pressing frame; 321, edge sealing pressing strip; 322, edge sealing limiting column; 323, edge sealing control column; 324, edge sealing sliding wheel; 33, edge sealing reset piece; 4, filling mechanism; 5, melting cutting mechanism; 51, melting cutting frame; 52, hot melting piece; 521, melting cutting control rod; 522, melting cutting elastic piece; 523, melting cutting rotating wheel; 53, abutting strip; 54, cutting knife; 55, melting cutting reset piece; 6, transmission mechanism; 61, clamping assembly; 611, clamping driving piece; 612, first chuck; 613, second chuck; 614, clamping displacement groove; 615, clamping limiting rod; 62, driving assembly; 621, first connecting piece; 622, second connecting piece; 623, screw rod; 624, adjusting block; 625, stroke groove; 626, knuckle; 63, bevel gear set; 631, first bevel gear; 632, second bevel gear; 64, anti-adhesion piece; 641, anti-adhesion plate; 642, anti-adhesion sliding wheel; 643, anti-adhesion rotating wheel; 7, linkage mechanism; 71, main driving shaft; 72, linkage driving piece; 73, edge sealing cam; 74, melting cutting cam; 75, anti-adhesion cam; 8, base frame. DETAILED DESCRIPTION

[0053] The following description will be made in conjunction with the accompanying drawings. Figures 1-15 The present application is further described in detail.

[0054] The present application discloses a liquid film packaging machine. Referring to the drawings Figure 1 With Figure 2 The liquid film packaging machine comprises a film winding mechanism 1, a folding mechanism 2, an edge sealing mechanism 3, a filling mechanism 4, a melting cutting mechanism 5, a transmission mechanism 6, and a linkage mechanism 7. The film winding mechanism 1 comprises a base frame 8. In this embodiment, the direction of gravity is downward, and the direction opposite to the downward direction is upward. For the convenience of description, the film transmission direction in this embodiment is from top to bottom. The base frame 8 is sequentially arranged from top to bottom with the film winding mechanism 1, the folding mechanism 2, the edge sealing mechanism 3, the transmission mechanism 6, and the melting cutting mechanism 5. The filling mechanism 4 penetrates through the folding mechanism 2 and the edge sealing mechanism 3. The linkage mechanism 7 cooperates with the edge sealing mechanism 3, the transmission mechanism 6, and the melting cutting mechanism 5. The base frame 8 is divided into a front surface and a back surface. In this embodiment, the front surface and the back surface are described only to express that the features are on the same side wall.

[0055] Referring toFigure 2 With Figure 3 The roll film mechanism 1 comprises a winding roller 11 for winding the film, a tensioning roller 12 for tensioning the film, and a shearing roller 13, all of which are rotationally connected to the back of the base frame 8. The tensioning roller 12 is between the shearing roller 13 and the winding roller 11, and the tensioning roller 12 is not on the connecting straight line of the shearing roller 13 and the winding roller 11. The film is wound from the winding roller 11 to the side of the tensioning roller 12 away from the shearing roller 13, and then wound on the shearing roller 13. The shearing roller 13 is fixedly connected with a shearing knife ring 14 for uniformly cutting the tensioned film into multiple parts. In this embodiment, the number of shearing knife rings 14 is one, and in other embodiments, the number of shearing knife rings 14 can be multiple. One shearing knife ring 14 is located at the middle position of the length of the shearing roller 13 to evenly divide the shearing roller 13 into two segments. If the number of shearing knife rings 14 is multiple, the multiple shearing knife rings 14 evenly divide the shearing roller 13 along the length direction into the number of shearing knife rings 14 + 1 segments. The back of the base frame 8 also rotationally has a compression roller 131, and the compression roller 131 is circumferentially provided with a shearing ring groove 132. The number and position of the shearing ring groove 132 correspond to the number and position of the shearing knife ring 14. The shearing ring groove 132 corresponds to the shearing knife ring 14 one-to-one. The outer wall of the compression roller 131 abuts against the shearing roller 13, and the shearing knife ring 14 is inserted into the shearing ring groove 132. The film is extended from the tensioning roller 12 to the space between the shearing roller 13 and the compression roller 131 for compression shearing. The number of folding mechanisms 2, edge sealing mechanisms 3, transmission mechanisms 6, and melt cutting mechanisms 5 is multiple and corresponds to the number of films cut by the shearing knife ring 14.

[0056] Referring to Figure 2, linkage mechanism 7 includes a main drive shaft 71 rotatably connected to the back of the base frame 8 and a linkage drive member 72 fixedly connected to the base frame 8 for driving the main drive shaft 71 to rotate, the length direction of the main drive shaft 71 extends from top to bottom, the rotation axis of the main drive shaft 71 is the central axis of the main drive shaft 71 extending, the main drive shaft 71 is below the film winding mechanism 1, in this embodiment, the linkage drive member 72 uses a motor cooperated with a speed reducer, the output shaft of the speed reducer is connected to the main drive shaft 71, and the main drive shaft 71 and the output shaft of the speed reducer are coaxially rotatable. The main drive shaft 71 is fixedly connected with the edge sealing cam 73, the melting cutting cam 74 and the anti-adhesion cam 75, the outer ring side wall of the edge sealing cam 73, the melting cutting cam 74 and the anti-adhesion cam 75 includes two partial rings with different radii, for example: one is a ring with a radius of 10 cm and an angle of 120°, and the other is a ring with a radius of 20 cm and an angle of 120°, the two rings are located on both sides of the length direction of the main drive shaft 71, that is, the two ends of the extension direction of the two rings are left with the same gap, then an arc is connected between the two adjacent ends of the two rings, and another arc is connected between the two adjacent ends of the two rings, thereby forming the outer ring shape of the edge sealing cam 73 or the melting cutting cam 74 or the anti-adhesion cam 75, and the radii and angles of the two rings of the edge sealing cam 73 or the melting cutting cam 74 or the anti-adhesion cam 75 can be different. The rotation of the edge sealing cam 73 is used to control the displacement of the edge sealing mechanism 3 to clamp and heat seal the film or separate it, and the rotation of the melting cutting cam 74 is used to control the displacement of the melting cutting mechanism 5 to clamp and heat cut the packaging bag or separate it.

[0057] Referring to Figure 4 With Figure 5 , the folding mechanism 2 includes a back plate 21 fixedly connected to the front of the base frame 8 and a shaping support plate 22, the shaping support plate 22 is used to support the film to be opened for the filling mechanism 4 to fill the liquid, the length direction of the shaping support plate 22 extends from top to bottom, and the extension axis of the shaping support plate 22 along the length direction is taken as the bending boundary line to be bent, and the two ends of the shaping support plate 22 are bent towards the back plate 21, and the film cavity 23 is formed between the bent shaping support plate 22 and the back plate 21. The film enters the film cavity 23 and is folded around the shaping support plate 22 from the two ends of the shaping support plate 22 after being bent away from the back plate 21, and the two side edges of the film are overlapped at the bending boundary line of the shaping support plate 22, in this embodiment, the filling mechanism 4 can use a filling pipe, and the filling mechanism 4 extends in the cavity formed by the bending of the shaping support plate 22, that is, it extends into the film opened in a triangular shape. The film cut by the film winding mechanism 1 is folded and wound around the shaping support plate 22.

[0058] Referring to Figure 4 With Figure 5The back plate 21 is provided with a shaping assembly 24, the shaping assembly 24 comprises a plurality of side folding plates 25 rotatably connected to the back plate 21, every two side folding plates 25 form a group, a group of side folding plates 25 correspondingly cooperate with a shaping support plate 22, the two side folding plates 25 in the same group press the film cover on both sides of the bending part of the shaping support plate 22, the two side folding plates 25 in the same group rotate towards or away from the corresponding shaping support plate 22, and the edge side wall of the side folding plate 25 extends from one side of the shaping support plate 22 to the bending part of the shaping support plate 22, and then extends to the other side of the bending part of the shaping support plate 22 to press the overlapping part of the film.

[0059] Referring to Figure 5 With Figure 6 The two side folding plates 25 in the same group are respectively located on both sides of the length direction of the shaping support plate 22, one side folding plate 25 is covered on the shaping support plate 22, and the other side folding plate 25 is covered on the previous side folding plate 25 to fix the previous side folding plate 25. The side folding plate 25 on the upper side is provided with a folding plate through hole 251, the folding plate through hole 251 penetrates the side folding plate 25 along the thickness direction, and the cross section of the folding plate through hole 251 is rectangular. The back plate 21 is rotatably connected with a folding plate buckle 252, and the back plate 21 is also penetrated by a bolt, the bolt penetrates from the back of the back plate 21, the bolt is not threadedly connected with the back plate 21, but is slidably penetrated, the bolt is threadedly connected with the folding plate buckle 252, and the head of the bolt is provided with a folding plate spring 253 between the back of the back plate 21, the folding plate spring 253 is sleeved on the bolt, and the two ends of the folding plate spring 253 are respectively abutted on the head and the back plate 21, the folding plate spring 253 is always in a compressed state, the folding plate buckle 252 is in a rectangular parallelepiped shape, the cross section length and width of the folding plate buckle 252 are smaller than the cross section length and width of the folding plate through hole 251, but the cross section length of the folding plate buckle 252 is greater than the cross section width of the folding plate through hole 251, that is, the folding plate buckle 252 can pass through the folding plate through hole 251 by rotating, and is clamped on the side wall of the side folding plate 25 around the opening of the folding plate through hole 251 by rotating, so as to realize the clamping and fixing of the rear side folding plate 25. The back plate 21 is also rotatably connected with a plurality of roller wheels 26, every two roller wheels 26 form a group, a group of roller wheels 26 correspond to a shaping support plate 22, the two roller wheels 26 in the same group are respectively located on both sides of the length direction of the shaping support plate 22, and are rotatably abutted on the film on both sides of the bending boundary line of the shaping support plate 22, so as to press the film on the shaping support plate 22.

[0060] Referring to Figure 7 With Figure 8, the sealing mechanism 3 comprises a heating piece 31, a sealing pressing frame 32 and a sealing reset piece 33, in the embodiment, the heating piece 31 is a metal piece which generates high temperature by conducting electricity, the temperature generated by the heating piece 31 is related to the material of the film to be processed, and the temperature generated by the heating piece 31 can make the film partially melt but not completely melt, so as to achieve the purpose of sealing. The heating piece 31 is fixedly connected to the lower end surface of the shaping support plate 22, the heating piece 31 corresponds to the shaping support plate 22, and the length direction of the heating piece 31 is the same as the length direction of the shaping support plate 22, and the position of the heating piece 31 is the same as the position of the bending boundary line of the shaping support plate 22, so that the overlapping position of the film is on the heating piece 31, and the overlapping position of the film is between the heating piece 31 and the sealing pressing frame 32.

[0061] Referring to Figure 7 With Figure 8 , the sealing pressing frame 32 comprises a sealing pressing strip 321, a sealing limiting column 322, a sealing control column 323 and a sealing sliding wheel 324, the sealing pressing strip 321 corresponds to the heating piece 31, and the overlapping position of the film is between the sealing pressing strip 321 and the high temperature surface of the heating piece 31, in the embodiment, the sealing pressing strip 321 is made of high-temperature-resistant metal material. The sealing control column 323 penetrates through the base frame 8, the two sealing limiting columns 322 slide the sealing control column 323 in the middle to limit the sliding of the sealing control column 323, the sealing pressing strip 321 is fixedly connected to the end of the sealing control column 323 located on the front of the base frame 8, the sealing control column 323 drives the sealing pressing strip 321 to slide towards the direction of abutting against the heating piece 31 or separating from the heating piece 31, the sealing sliding wheel 324 is rotationally connected to the end of the sealing control column 323 located on the back of the base frame 8, and the sealing sliding wheel 324 rotates against the sealing cam 73. The sealing reset piece 33 is used for abutting the sealing sliding wheel 324 against the sealing cam 73, in the embodiment, the sealing reset piece 33 is a spring, the cross-sectional diameter of the end of the sealing control column 323 located on the back of the base frame 8 is greater than the middle section of the sealing control column 323, the sealing reset piece 33 is sleeved on the middle section of the sealing control column 323, one end of the sealing reset piece 33 abuts against the sidewall on the back of the base frame 8, and the other end of the sealing reset piece 33 abuts against the end of the sealing control column 323 located on the back of the base frame 8. The sealing cam 73 rotates, which is a circular ring with different radii and the sealing sliding wheel 324, thereby driving the sealing control column 323 to slide, so that the sealing pressing strip 321 is displaced towards the direction of pressing against the heating piece 31 or away from the heating piece 31, so as to heat and melt the overlapping position of the film.

[0062] Referring to Figure 9 With Figure 10, the transmission mechanism 6 comprises a clamping assembly 61 and a driving assembly 62, the driving assembly 62 comprises a bevel gear set 63, a first connecting piece 621 and a second connecting piece 622, the bevel gear set 63 comprises a first bevel gear 631 and a second bevel gear 632, the first bevel gear 631 is fixedly connected on the main drive shaft 71, and the first bevel gear 631 rotates coaxially with the main drive shaft 71, the second bevel gear 632 is rotatably connected on the base frame 8, the second bevel gear 632 is engaged on the first bevel gear 631, and the rotating shaft of the second bevel gear 632 is fixedly connected on the end of the first connecting piece 621, the rotating shaft of the second bevel gear 632 is perpendicular to the length direction of the first connecting piece 621, and the plane formed by the rotating direction of the first connecting piece 621 is parallel to the back side wall of the base frame 8. The first connecting piece 621 is provided with a stroke groove 625 extending along the length direction of the first connecting piece 621, and a lead screw 623 is rotatably connected in the stroke groove 625, the length direction of the lead screw 623 extends along the extension direction of the stroke groove 625, the end of the lead screw 623 penetrates through the first connecting piece 621 to the outside, and the end of the lead screw 623 outside the stroke groove 625 is fixedly connected with a hexagonal bolt for rotation, and the lead screw 623 is only rotationally connected with the first connecting piece 621 without threaded connection.

[0063] With reference to Figure 10 , the lead screw 623 is threadedly connected with an adjusting block 624, the length direction of the adjusting block 624 is parallel to the rotating shaft of the second bevel gear 632, that is, the length direction of the adjusting block 624 is perpendicular to the length direction of the lead screw 623. The two ends of the second connecting piece 622 in the length direction are fixedly connected with knuckles 626, one of the knuckles 626 is rotatably connected on the end of the adjusting block 624 outside the stroke groove 625, the rotating direction of this knuckle 626 is perpendicular to the length direction of the adjusting block 624, that is, the plane formed by the rotating direction of this knuckle 626 is parallel to the plane formed by the rotating direction of the first connecting piece 621, so that the plane formed by the rotating direction of the second connecting piece 622 is parallel to the plane formed by the rotating direction of the first connecting piece 621.

[0064] With reference to Figure 10 And Figure 11The other knuckle 626 is rotationally connected to the clamping assembly 61 to drive the clamping assembly 61 to displace and pull the packaging bag. The base frame 8 is provided with a clamping displacement slot 614 extending from top to bottom. The clamping assembly 61 comprises a clamping driving member 611. In the embodiment, the clamping driving member 611 is a pneumatic cylinder. The clamping driving member 611 slides in the clamping displacement slot 614. The end of the clamping driving member 611 at the front of the base frame 8 is rotationally connected to the knuckle 626. The telescopic shaft of the clamping driving member 611 is located at the front of the base frame 8. Two clamping limiting rods 615 are fixedly connected to the outer side wall of the end of the clamping driving member 611 at the front of the base frame 8. The first clamping head 612 is fixedly connected to the end of the two clamping limiting rods 615 away from the clamping driving member 611. The second clamping head 613 is fixedly connected to the telescopic shaft of the clamping driving member 611 and is limitedly slid on the clamping limiting rod 615. The telescopic shaft of the clamping driving member 611 controls the telescopic sliding of the second clamping head 613 towards or away from the first clamping head 612. The packaging bag is between the first clamping head 612 and the second clamping head 613.

[0065] With reference to Figure 10 The clamping driving member 611 is provided with an anti-sticking member 64. The anti-sticking member 64 comprises an anti-sticking plate 641, an anti-sticking sliding wheel 642 and an anti-sticking rotating wheel 643. The anti-sticking plate 641 is rotationally connected to the base frame 8. The anti-sticking sliding wheel 642 is rotationally connected to the end of the clamping driving member 611 at the back of the base frame 8 and abuts against the side wall of the anti-sticking plate 641. The anti-sticking rotating wheel 643 is rotationally connected to the side wall of the anti-sticking plate 641 away from the clamping driving member 611 and abuts against the anti-sticking cam 75. The rotation of the anti-sticking cam 75 drives the clamping driving member 611 to clamp and displace the packaging bag, so that the packaging bag is separated from the heating member 31. The adjusting block 624 is provided with a ball. The knuckle 626 is rotationally connected to the ball of the adjusting block 624, so that the second connecting member 622 can be displaced in the non-rotation direction under the lifting action of the anti-sticking cam 75.

[0066] With reference to Figure 2 and Figure 10The distance between the adjusting block 624 and the rotation shaft of the second bevel gear 632 is a first stroke, the distance between the adjusting block 624 and the clamping driving member 611 is a second stroke, the side wall of the clamping driving member 611 is attached to and slides on the inner wall of the clamping displacement groove 614, the clamping driving member 611 slides in the up-down direction under the limitation of the clamping displacement groove 614, the first stroke plus the second stroke minus the difference between the first stroke and the second stroke is the maximum stroke of the up-down sliding of the clamping driving member 611, the rotation of the lead screw 623 adjusts the position of the adjusting block 624 to adjust the maximum stroke, the clamping driving member 611 moves downward to approach the melting cutting mechanism 5, and the clamping driving member 611 moves upward to approach the edge sealing mechanism 3.

[0067] With reference to Figure 12 And Figure 13 The melting cutting mechanism 5 includes a melting cutting frame 51, a hot melting member 52 sliding on the melting cutting frame 51 and used for hot melting the packaging bag, and a melting cutting reset member 55, the melting cutting frame 51 is fixedly connected to the front side wall of the base frame 8, two abutting strips 53 and a cutter 54 used for cutting the packaging bag are fixedly connected to the melting cutting frame 51, and the cutter 54 is located between the adjacent abutting strips 53. In the embodiment, the hot melting member 52 can adopt a conductive high-temperature metal member.

[0068] With reference to Figure 13 And Figure 14 And Figure 15 The melting cutting reset member 55 includes a melting cutting control rod 521 and a melting cutting elastic member 522, the melting cutting control rod 521 is fixedly connected to the end of the hot melting member 52 away from the abutting strip 53, the melting cutting control rod 521 penetrates the base frame 8 from the front of the base frame 8 to the back of the base frame 8, and the melting cutting control rod 521 slides in the penetration direction, the diameter of the end of the melting cutting control rod 521 located at the back of the base frame 8 is greater than the diameter of the middle section of the melting cutting control rod 521, the melting cutting elastic member 522 is sleeved on the middle section of the melting cutting control rod 521 located at the back of the base frame 8, one end of the melting cutting elastic member 522 abuts against the side wall of the back of the base frame 8, and the other end of the melting cutting elastic member 522 abuts against the end of the melting cutting control rod 521 located at the back of the base frame 8, in the embodiment, the melting cutting elastic member 522 can adopt a spring, and the melting cutting elastic member 522 is always in a compressed state. The melting cutting control rod 521 is rotatably connected to the melting cutting rotating wheel 523 at the end located at the back of the base frame 8, the melting cutting rotating wheel 523 abuts against and rotates on the melting cutting cam 74, the melting cutting cam 74 rotates to displace the hot melting member 52 in the direction of abutting against or away from the cutter 54, and the cutter 54 and the abutting strip 53 simultaneously abut the packaging bag against the hot melting member 52.

[0069] The implementation principle of the liquid film packaging machine in the embodiment of the application is as follows: first, a worker pulls the film on the winding roller 11, winds the film between the shearing roller 13 and the pressing roller 131 after the film passes through the tensioning roller 12, cuts the film into two parts through the shearing cutter ring 14, and then pulls the film into the film cavity 23, and then pulls the two sides of the film out of the film cavity 23, folds the two sides of the film on the shaping support plate 22, and places the overlapping part of the film at the bending boundary line of the shaping support plate 22, and then rotates the side folding plate 25 to press on the film, and then rotates the other side folding plate 25 in the same group to press on the film and the previous side folding plate 25, and then rotates the folding plate buckle 252 to fix the position of the side folding plate 25, and then rotates the roller pressing wheel 26 to press the film on the shaping support plate 22.

[0070] The film is continuously pulled through the heating member 31 to between the first clamp head 612 and the second clamp head 613, at this time, the worker can release the pulling of the film, the linkage driving member 72 is started, the main driving shaft 71 is rotated, the edge sealing cam 73, the melting cutting cam 74, the anti-adhesion cam 75 and the first bevel gear 631 are rotated, the clamping driving member 611 is extended to clamp the film between the first clamp head 612 and the second clamp head 613, the anti-adhesion cam 75 first drives the anti-adhesion plate 641 to rotate, and then drives the clamping driving member 611 to move away from the base frame 8 and then returns to the original position, so as to lift the film off the heating member 31; then the first bevel gear 631 rotates to drive the second bevel gear 632, and then drives the first connecting member 621 to rotate, and then drives the second connecting member 622 to rotate, and then the clamping driving member 611 is displaced downward to pull the film under the limitation of the clamping displacement slot 614; when the film is pulled to the specified position, the edge sealing cam 73 rotates to displace the edge sealing control column 323, drives the edge sealing pressing frame 32 to displace, and then the edge sealing pressing strip 321 abuts against the overlapping part of the film on the heating member 31 to iron and seal the edge; at the same time, the melting cutting cam 74 rotates to displace the melting cutting control rod 521, drives the hot melting member 52 to displace, and then the film abuts against the hot melting member 52 and the abutting strip 53, two abutting strips 53 seal the upper part of the film and the lower part of the film respectively, and then the cutter 54 cuts the upper part of the film and the lower part of the film; then the clamping driving member 611 is retracted, so that the first clamp head 612 and the second clamp head 613 are separated, and at the same time, the clamping driving member 611 is upwardly reset under the continuous action of the first bevel gear 631, and in the process, the filling mechanism 4 fills the liquid; when the clamping driving member 611 is upwardly reset to the specified position, the heating member 31 and the edge sealing pressing strip 321 are separated, and the hot melting member 52 and the abutting strip 53 are separated; and in the continuous working process, the main driving shaft 71 is continuously rotated.

[0071] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so: any equivalent changes made on the basis of the structure, shape and principle of the application should be covered within the protection scope of the application.

Claims

1. A liquid film packaging machine, characterized in that, include: Film winding mechanism (1) is used to store and release the film; Folding mechanism (2) is used to fold and gather the film released by the film rolling mechanism (1); The sealing mechanism (3) is used to heat-seal the gathered film to form a packaging bag; The filling mechanism (4) is used to inject liquid into the packaging bag after heat-sealing; The melting and cutting mechanism (5) is used to cut and separate the packaging bag after it has been injected with liquid by hot melting and sealing the edges. The transmission mechanism (6) includes a clamping component (61) and a driving component (62). The clamping component (61) is used to clamp the packaged bag after it has been gathered and sealed. The driving component (62) is used to drive the clamping component (61) to pull the clamped packaged bag from the folding mechanism (2) to the melting and cutting mechanism (5). The folding mechanism (2) includes a back plate (21) and a shaping support plate (22). The shaping support plate (22) is used to expand the membrane for the filling mechanism (4) to fill it with liquid. A membrane cavity (23) is formed between the shaping support plate (22) and the back plate (21). The membrane enters the membrane cavity (23) and is then folded and wrapped around the shaping support plate (22). The shaping support plate (22) is bent, and the two sides of the membrane overlap at the bend of the shaping support plate (22). A shaping component (24) is provided on the back plate (21). The shaping component (24) is used to press the membrane onto the shaping support plate (22). The shaping assembly (24) includes at least two side stacks (25) disposed on the back plate (21). The multiple side stacks (25) respectively press the film onto both sides of the bend of the shaping support plate (22). The sidewalls of the side stacks (25) extend from one side of the shaping support plate (22) to the bend of the shaping support plate (22), bend, and then extend to the other side of the bend of the shaping support plate (22) to cover the overlapping part of the film. The back plate (21) is also provided with at least two rollers (26). The multiple rollers (26) are distributed on both sides of the bend of the shaping support plate (22) and press the film onto the shaping support plate (22).

2. A liquid film packaging machine according to claim 1, characterized in that: It also includes a linkage mechanism (7), which includes a rotating main drive shaft (71) and a linkage drive component (72) for driving the main drive shaft (71) to rotate. The main drive shaft (71) is provided with a sealing cam (73) and a melting and cutting cam (74). The sealing cam (73) rotates to control the sealing mechanism (3) to move so as to clamp and heat-seal or separate the film. The melting and cutting cam (74) rotates to control the melting and cutting mechanism (5) to move so as to clamp and heat-seal or separate the packaging bag.

3. A liquid film packaging machine according to claim 2, characterized in that: The sealing mechanism (3) includes a heating element (31), a sealing pressing frame (32), and a sealing reset element (33). The heating element (31) is disposed on the bend of the shaping support plate (22) so that the overlapping position of the film is on the heating element (31) and the overlapping position of the film is between the heating element (31) and the sealing pressing frame (32). The sealing reset element (33) is used to press the sealing pressing frame (32) against the sealing cam (73). The sealing cam (73) rotates so that the sealing pressing frame (32) moves in the direction of pressing against the heating element (31) or away from the heating element (31) to heat-seal the overlapping position of the film.

4. A liquid film packaging machine according to claim 3, characterized in that: The drive assembly (62) includes a bevel gear set (63), a first connector (621), and a second connector (622). The bevel gear set (63) is mounted on the main drive shaft (71). The output shaft of the bevel gear set (63) is connected to one end of the first connector (621). One end of the second connector (622) is rotatably mounted on the other end of the first connector (621), and the other end of the second connector (622) is rotatably mounted on the clamping assembly (61) to drive the clamping assembly. (61) Displacement pulls the packaging bag; the distance between the hinge of the first connector (621) and the second connector (622) and the output shaft of the bevel gear set (63) is the first stroke; the distance between the hinge of the first connector (621) and the second connector (622) and the hinge of the second connector (622) and the clamping assembly (61) is the second stroke; the sum of the first stroke and the second stroke and the difference between the first stroke and the second stroke is the maximum stroke of the clamping assembly (61).

5. A liquid film packaging machine according to claim 4, characterized in that: The clamping assembly (61) includes a clamping drive (611) rotatably mounted on a second connector (622). A first clamp (612) is mounted on the clamping drive (611), and a second clamp (613) is mounted on the output shaft of the clamping drive (611). The packaging bag is positioned between the first clamp (612) and the second clamp (613). The output shaft of the clamping drive (611) drives the second clamp (613) to press against the first clamp (612). 12) Or displacement away from the first chuck (612); the main drive shaft (71) is provided with an anti-adhesion cam (75), the clamping drive (611) is provided with an anti-adhesion member (64), the clamping drive (611) abuts against the anti-adhesion cam (75) through the anti-adhesion member (64), and the clamping drive (611) clamps the packaging bag to displacement by the rotation of the anti-adhesion cam (75), so that the packaging bag is detached from the heating element (31).

6. A liquid film packaging machine according to claim 4, characterized in that: A lead screw (623) is rotatably mounted on the first connector (621), and an adjusting block (624) is threadedly connected to the lead screw (623). The adjusting block (624) is rotatably mounted on the second connector (622). The adjusting block (624) is the hinge point between the first connector (621) and the second connector (622). Rotating the lead screw (623) adjusts the position of the adjusting block (624) to adjust the maximum stroke.

7. A liquid film packaging machine according to claim 2, characterized in that: The melting and cutting mechanism (5) includes a melting and cutting frame (51) and a hot melt component (52) slidably disposed on the melting and cutting frame (51) for hot-melting and sealing the packaging bag. The melting and cutting frame (51) is provided with at least two abutting strips (53), and a cutter (54) for cutting the packaging bag is provided between adjacent abutting strips (53). The hot melt component (52) is provided with a melting and cutting reset component (55) for pressing the hot melt component (52) against the melting and cutting cam (74). The melting and cutting cam (74) rotates to drive the hot melt component (52) to move in a direction that is pressed against the cutter (54) or away from the cutter (54). The cutter (54) and the abutting strips (53) simultaneously press the packaging bag against the hot melt component (52).

8. A liquid film packaging machine according to claim 1, characterized in that: The film winding mechanism (1) includes a winding roller (11) for winding the film, a tensioning roller (12) for tensioning the film, and a shearing roller (13). The shearing roller (13) is provided with a shearing blade ring (14) for uniformly cutting the tensioned film into multiple parts. The folding mechanism (2), the sealing mechanism (3), the transmission mechanism (6), and the melting and cutting mechanism (5) are multiple and their number corresponds to the number of films cut by the shearing blade ring (14).

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