CN114408307A - Thermal shrinkage film packaging machine and film cutting mechanism thereof - Google Patents

Abstract

The invention provides a film cutting mechanism of a thermal shrinkage film packaging machine, which comprises: the film cutting module, the film pulling module and the film transplanting and opening module. The film cutting module comprises a cutter component and a lower chopping board component and is used for cutting off and sealing the film material to form a film material bag with one open end. Draw the membrane module including drawing membrane device and clamping device, draw the membrane device can with cut the membrane module and sealed one end the membrane material draws to predetermineeing distance department, clamping device can with draw the membrane device to draw the membrane material of predetermineeing distance department fixed. The transplanting membrane opening module can convey the membrane material bag prepared by the membrane cutting module to a next procedure, and can open the bag opening of the membrane material bag. Still provide a pyrocondensation membrane packagine machine including above-mentioned film cutting mechanism. The thermal shrinkage film packaging machine and the film cutting mechanism thereof provided by the invention can solve the problems that the deviation of the length dimension of the cut film is large, the flatness of a film material bag is poor and the like in the prior art.

Description

Heat shrinkable film packaging machine and its film cutting mechanism

technical field

The invention relates to the technical field of packaging equipment, in particular to a heat shrinkable film packaging machine and a film cutting mechanism thereof.

Background technique

Heat shrinkable film is a good film packaging material with good transparency, which allows users to directly see the packaged products, which is convenient for users to select products; Packaging, packaging contents are extensive; its anti-theft and dust-proof properties are excellent.

With the improvement of users' positioning requirements for products, the outer packaging requirements of their products are also constantly improving, such as the fit and flatness of the packaging film and the product packaging box, the flatness of the cutting line, and the aesthetics of the entire outer packaging, etc. , Exquisite and meticulous packaging can significantly enhance the status of the product in the hearts of consumers, enhance the goodwill of consumers, improve the consumption level of the product, and make the product more competitive.

In the current prior art, the fixed-length segmentation of heat shrinkable film packaging basically uses a conveyor belt to transfer the packaging film and the inner packaging box to the film cutting position, and then the cutter directly cuts the film. The film bag cut by this film cutting method The deviation of the length and dimension of the film is large, and the flatness of the film bag is also poor, which is prone to the phenomenon of film bag cutting dislocation and uneven surface, which is not conducive to the subsequent shaping and heat shrinking.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the deficiencies in the prior art, and to provide a heat-shrinkable film packaging machine and a film cutting mechanism thereof, so as to solve the problems in the prior art that the length and dimension deviation of the cut film is large and the flatness of the film bag is poor, etc.

To achieve the above object, the technical scheme adopted in the present invention is:

A film-cutting mechanism for a heat-shrinkable film packaging machine, characterized in that it comprises: a film-cutting module, a film-pulling module, and a transplanting and film-opening module;

The film-cutting module includes a cutter assembly and a lower anvil board assembly, which are used for cutting and sealing the film material to form a film material bag with an opening at one end;

The film-pulling module includes a film-pulling device and a clamping device, the film-pulling device can pull the film material with one end of the film-cutting module closed to a preset distance, and the clamping device can The film pulling device is pulled to a preset distance and the film material is fixed;

The transplanting film opening module can transport the film bag prepared by the film cutting module to the next process, and can open the bag mouth of the film bag.

Further improvements to the above technical solutions are:

The cutter assembly includes a fixed assembly and a moving assembly;

the fixing assembly includes a fixing plate and a driving device arranged on the fixing plate;

The moving assembly is slidably connected with the fixing plate, and includes a mounting plate and a hot cutting knife disposed at one end of the mounting plate close to the lower anvil assembly;

The driving device can drive the moving assembly to move along the vertical direction on the fixing plate.

The moving assembly further includes an anti-hard-cutting device, the anti-hard-cutting device includes a rebound device, a sensor, and a light-shielding plate; the light-shielding plate is slidably connected to the mounting plate, and the hot-cutting knife is fixed to the light-shielding plate The plate is close to one end of the lower anvil assembly; the sensor is arranged on the mounting plate, including a slot-shaped hole for light-sensing; the rebound device is arranged on the mounting plate and is located on the shading plate When the light-shielding plate moves upward, the rebound device can be compressed; when the rebound device is in a free state, the light-shielding plate is located below the slot-shaped hole.

The cutter assembly further includes an anti-drop device, the anti-drop device includes at least one spring assembly, the spring assembly includes a spring, and a A fixed block; two ends of the spring are respectively connected with the two fixed blocks.

The number of the clamping devices is two, and the positions of the clamping devices are adjustable to meet the packaging requirements of products of different specifications; each of the clamping devices includes a clamping driving device and a clamping and fixing block, The clamping driving device can drive the clamping and fixing block to open or close, so as to clamp or loosen the film material;

The film-pulling device includes a film-pulling sliding module and a film-pulling strip slidably connected to the film-pulling sliding module; the film-pulling strip is provided with an escape opening corresponding to the clamping and fixing block, and is also provided with A film dividing block protruding from the surface of the film pulling strip.

The transplanting film opening module includes a transplanting sliding module and a film opening assembly slidably connected with the transplanting sliding module; the film opening assembly includes a lifting mechanism, a film clamping mechanism and a film clamping mechanism;

The lifting mechanism includes a lifting sliding module;

The film clamping mechanism includes an upper bracket slidably connected with the lifting and sliding module, and at least two upper film clamping devices respectively arranged on the upper bracket; the distance between the upper film clamping devices can be adjusted. to meet the packaging requirements of products of different specifications; the upper film clamping device includes a first driving device and an upper film clamping assembly, the first driving device can drive the upper film clamping assembly to open or close, so as to clamping or loosening the upper film of the film material;

The lower film clamping mechanism includes a lower support and at least two lower film clamping devices arranged on the lower support; the distance between the lower film clamping devices is adjustable to meet the packaging requirements of products of different specifications; The lower film clamping device includes a second driving device and a lower film clamping assembly, the second driving device can drive the lower film clamping assembly to open or close, so as to clamp the lower film of the film material or relax;

The transplanting and film-opening module further includes a support plate and a connecting plate slidably connected to the support plate; both the lifting mechanism and the film clipping mechanism are fixedly connected to the connecting plate; the connecting plate is along the supporting plate. When the plate slides, it can drive the lifting mechanism, the film clipping mechanism and the film clipping mechanism to slide together on the supporting plate along the first direction; when the transplanting sliding module drives the supporting plate to slide, the supporting plate The plate can drive the lifting mechanism, the film clamping mechanism and the film clamping mechanism to slide along the second direction on the transplanting and sliding module, and the first direction and the second direction are perpendicular to each other.

The present invention also provides a heat-shrinkable film packaging machine, comprising the above-mentioned film cutting mechanism.

Further, the heat shrinkable film packaging machine also includes a film cover mechanism, and the film cover mechanism includes a material pushing and shaping module, a material dividing module, a cutting end film module, and a cutting end film support assembly; the transplanting The film-opening module can transport the film bag prepared by the film-cutting module to between the material-separating module and the tail-cutting film module, and can open the bag mouth of the film bag to prepare products to be packaged. Carry out wrapping.

Further, the material distribution module includes a material distribution drive device and a storage rack disposed at the drive end of the material distribution drive device, and the material distribution drive device is used to lift the to-be-packaged product placed on the storage rack to a preset height;

The pushing and shaping module includes a pushing sliding module, a shaping fixing frame slidably connected with the pushing sliding module, a shaping device and a pushing plate fixed on the shaping fixing frame; the shaping device includes A shaping drive device and two shaping plates, the shaping driving device can drive the two shaping plates to move in the direction of approaching or moving away from each other, so as to stretch or loosen the mouth of the film bag used for packaging the product to be packaged ; When the shaping fixing frame moves toward the cutting end film module on the pushing sliding module, the pushing plate can push the product to be packaged to move toward the cutting end film module;

The tail film cutting module includes a tail film cutter assembly and a tail film lower chopping block assembly, which are used to cut off the excess tail film of the film material bag;

The end-cut film support assembly is arranged on the side of the end-cut film module away from the material distribution module, and is used to support the product to be packaged and the film bag sleeved on the outside of the product to be packaged, so as to support the product to be packaged. The excess tail membrane is excised.

Further, the tail film lower anvil board assembly includes a lower anvil block lifting module and a tail film lower anvil block fixedly connected with the driving end of the lower anvil lifting module, and the tail film lower anvil board lifting module can drive the tail film. The under-membrane cutting board moves within a preset range.

According to the technical solution of the present invention, the film cutting mechanism of the heat shrinkable film packaging machine of the present invention pulls the film material to be cut to a preset distance through the film pulling module, and uses a clamping device to fix the end of the film material , and then use the cutter assembly to cut the film bag. The film pulling module pulls the film material according to the preset length. Compared with the prior art, it can reduce the deviation between the cutting length dimensions of each film material bag, and the film pulling module and the clamping device can remove the film. The straightening of the material bag can firstly reduce the dimensional deviation, and secondly, it can effectively prevent the wrinkle and unevenness of the film material during the cutting process, and improve the aesthetics of the outer packaging film of the product. The film-cutting mechanism of the heat-shrinkable film packaging machine of the present invention also includes a transplanting and film-opening module, which can transfer the cut film bag to the next process, and can also open the bag mouth of the film bag, which is beneficial to the next process. The products are packaged with film, which improves the production efficiency.

Description of drawings

FIG. 1 is a schematic structural diagram of a film cutting mechanism of a heat shrinkable film packaging machine according to an embodiment of the present invention.

FIG. 2 is a schematic structural diagram of a film cutting module according to an embodiment of the present invention.

3 is a schematic diagram of an exploded structure of a film cutting module according to an embodiment of the present invention.

FIG. 4 is a schematic structural diagram of a film pulling module according to an embodiment of the present invention.

FIG. 5 is a schematic structural diagram of a transplanting film-opening module according to an embodiment of the present invention.

FIG. 6 is a schematic structural diagram of a film clamping mechanism according to an embodiment of the present invention.

FIG. 7 is a schematic structural diagram of a film clipping mechanism according to an embodiment of the present invention.

FIG. 8 is a schematic structural diagram of a mantle mechanism according to an embodiment of the present invention.

FIG. 9 is a schematic structural diagram of a material pushing and shaping module according to an embodiment of the present invention.

FIG. 10 is a schematic structural diagram of a shaping device according to an embodiment of the present invention.

FIG. 11 is a schematic structural diagram of a film sleeve mechanism from another perspective according to an embodiment of the present invention.

FIG. 12 is a schematic structural diagram of an anvil assembly under the tail film according to an embodiment of the present invention.

FIG. 13 is a schematic structural diagram of a tail-cutting film module according to an embodiment of the present invention.

The meanings of the symbols in the accompanying drawings are:

200-film cutting mechanism; 210-film-cutting module; 220-film pulling module; 230-transplanting film-opening module; 211-cutter assembly; 2111-fixing assembly; 21111-driving device; 21112-fixing plate; 21113-film opening block; 21114-anti-drop device; 2112-moving assembly; 21121-slide rail; 21122-slider; 21123-installation plate; 21124-drive block; 21125-rebound device; -protection plate; 21128-shading plate; 21129-insulation block; 21130-hot cutter; 21131-slide device; 212-lower cutting board assembly; 2121-lower cutting board; 2122-lower cutting board fixing frame; - pull film sliding module; 2212 - pull film strip; 2213 - avoid opening; 2214 - film dividing block; 222 - clamping device; 2221 - clamping driving device; 2222 - rotating block; 2223 - fixing block; 232-Film opening assembly; 2321-Lifting mechanism; 2322-Film clamping mechanism; 23221-First drive device; 23222-Upper bracket; 23223-Upper fixing plate; 23231-lower rotating plate; 23232-limiting and fixing block; 23233-rotating shaft; 23234-lower bracket; 23235-second driving device; 23236-lower fixing plate; 233-connecting plate; 234-supporting plate;

10-Products to be packaged; 20-Film bag; 100-Sleeve film mechanism; 110-Film cutting module; 111-Film cutter assembly; 1111-Film cutter drive device; 1112-Cutter assembly fixing frame ;1113-Tail film hot-cutting knife guard plate; 1114-Tail film hot-cutting knife; 1115-Tail film hot-cutting knife heat insulation block; 112-End film lower cutting board assembly; 1121-Lower cutting board lifting module; 1122-End film lower cutting board; 1123-sleeve film position support plate; 1124-cut tail film position support plate; 1125- tail film baffle plate; 1126- tail film clamping assembly; 11261- tail film clamping cylinder; 11262- drive frame; 11263- tail film Clamping block; 11264-end film clamping block bracket; 11265-end film fixing block; 120- material distribution module; 121- material distribution drive device; 122- rack; 1221- roller; 1222- fixed frame; 123 -Separation baffle; 130-Feeding module; 140-Pushing shaping module; 141-Pushing sliding module; 142-Pushing plate; 143-Shaping fixing frame; 144-Shaping device; 1441-Shaping drive device; 14411-shaping cylinder; 14412-synchronous belt device; 1442-shaping plate; 14421-first shaping plate; 14422-second shaping plate; 150-waste end film device.

Detailed ways

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the related drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that a thorough and complete understanding of the present disclosure is provided.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention.

Embodiment 1: As shown in FIG. 1 to FIG. 7 , the film cutting mechanism 200 of the heat shrinkable film packaging machine in this embodiment includes a film cutting module 210 , a film pulling module 220 and a transplanting film opening module 230 .

A feeding mechanism (not shown) is provided in the feeding direction of the film cutting mechanism 200 of the heat shrinkable film packaging machine in this embodiment, and the feeding mechanism is used to provide film material for the film cutting mechanism 200. The film The material includes an upper film and a lower film, and one end of the upper film and the lower film along the length direction (feeding direction) of the film material is in a pressed or integrally formed state, that is, only one end of the film bag is in a closed state, The other three ends are open. The film cutting mechanism 200 of this embodiment is mainly used to cut the whole film material into separate film material bags, and at the same time close the two openings of the film material bag to form a film material bag with only one end open. The two closed open ends are The vertical direction of the film feed direction.

As shown in FIG. 2 and FIG. 3 , the film cutting module 210 includes a cutter assembly 211 and a lower anvil assembly 212 for cutting and sealing the film material to form a film material bag with one end open.

The cutter assembly 211 includes a fixed assembly 2111 and a moving assembly 2112 . The fixing assembly 2111 includes a fixing plate 21112 and a driving device 21111 disposed on the fixing plate 21112 . In this embodiment, the driving device 21111 is an air cylinder, the air cylinder is fixed near the upper edge of the fixing plate 21112, and the piston rod of the air cylinder is disposed downward. In order to facilitate the separation of the upper film and the lower film of the film bag, a film opening assembly 232 can also be provided at the edge of the fixing plate 21112 close to one end of the lower anvil plate assembly 212. 21112 Column-shaped opening module at the lower edge. The mold opening assembly is arranged at the open end of the film material bag, and the upper film is located above the opening module and the lower film is located below the opening module when the film material is fed, so as to separate the upper and lower films.

The moving assembly 2112 is slidably connected to the fixing plate 21112 , and includes a mounting plate 21123 and a hot cutting knife 21130 disposed at one end of the mounting plate 21123 close to the lower anvil plate assembly 212 . A sliding rail 21121 and a sliding block 21122 are arranged between the mounting plate 21123 and the fixing plate 21112 , and the sliding block 21122 can slide along the sliding rail 21121 . In this embodiment, the number of the sliding rails 21121 is two, which are arranged on the surface of the fixing plate 21112 close to the mounting plate 21123, and are respectively disposed close to both sides of the mounting plate 21123 in the width direction, The sliding direction of the sliding rail 21121 is the vertical direction. The mounting plate 21123 is fixedly connected with the sliding block 21122 , and at least two sliding blocks 21122 are arranged on each sliding rail 21121 .

The mounting plate 21123 is provided with a driving notch at the position corresponding to the piston rod of the driving device 21111, and a driving block 21124 is arranged in the driving notch. The end of the piston rod of the driving device 21111 and the driving block 21124 is detachably connected, when the driving device 21111 can drive the moving assembly 2112 to move up and down in the vertical direction on the fixing plate 21112.

The cutter assembly 211 may further include a heating tube and a thermocouple arranged inside the hot cutter 21130, and protective plates 21127 arranged on both sides of the hot cutter 21130, and the protection plates 21127 are arranged on the hot cutter 21130. Both sides of the 21130 can prevent scalding accidents caused by accidental touch by the operator. Since the temperature of the hot cutting knife 21130 is relatively high, in order to prolong the service life of the equipment, a plurality of heat insulation blocks 21129 can be arranged between the hot cutting knife 21130 and the installation board 21123, and the hot cutting knife 21130 can be connected to the installation board 21123 through the heat insulation block 21129. Effectively reduce the thermal damage of the hot cutter 21130 to the mounting plate 21123. If the thermal insulation block 21129 is damaged, only the corresponding thermal insulation block 21129 needs to be replaced, which makes the maintenance of the equipment more convenient and reduces the maintenance cost.

In order to prevent the equipment from being damaged due to overpressure when the cutter assembly 211 cuts to a hard object, an anti-hard-cutting device can also be provided on the moving assembly 2112, and the anti-hard-cutting device includes a rebound device 21125, a sensor 21126, and a shading plate 21128 . The shading plate 21128 is slidably connected to the mounting plate 21123 through a sliding device 21131, the sliding device 21131 can be a sliding rail and a sliding block, a sliding rod and a sliding groove, etc. The sliding device 21131 is arranged on the mounting plate 21123 Near both ends in the width direction. The rebounding device 21125 is disposed on the mounting plate 21123 and is located just above the light shielding plate 21128. The rebounding device 21125 can be a spring, a nitrogen gas spring, or the like. The hot-cutting knife 21130 is fixed to the end of the shading plate 21128 close to the lower anvil assembly 212 , and the sensor 21126 is disposed on the mounting plate 21123 and includes a slot-shaped hole for photosensitive. When the rebound device 21125 is in a free state, the shading plate 21128 is located below the sensor 21126 . When the hot cutter 21130 cuts a hard object, under the influence of resistance, the light shielding plate 21128 moves upward and compresses the rebound device 21125. When the light shielding plate 21128 rises to a certain level, it blocks the slot-shaped hole, so The sensor 21126 senses that a hard object is cut, and sends a control signal to the control system, and the control system controls the drive device 21111 to drive the hot cutter 21130 to lift up according to the control signal. The setting of the anti-hard cutting device can not only prevent the equipment from being damaged when cutting hard objects, but also can quickly lift the hot cutter 21130 when it accidentally cuts to the operator's hand to prevent personnel injury accidents.

Since the driving device 21111 in this embodiment is an air cylinder, when the air cylinder is suddenly powered off or cut off, the piston rod of the air cylinder will lose control and fall. The anti-drop device 21114 includes at least one spring assembly, and in this embodiment, the number of the spring assemblies is two groups. Each set of the spring assemblies includes a spring and a fixing block 2223 respectively disposed on one side of the fixing plate 21112 and the mounting plate 21123 close to each other; two ends of the spring are respectively connected with the two fixing blocks 2223 . When the piston rod loses the pulling force on the moving assembly 2112, the spring can make the moving assembly 2112 subject to the pulling force, so as to avoid the accident caused by the falling of the moving assembly 2112.

The lower anvil assembly 212 includes a lower anvil fixing frame 2122 and a lower anvil 2121 disposed on the lower anvil fixing frame 2122 . In order to avoid hard contact when the film cutting module 210 cuts the film material, a silica gel strip can also be arranged on the upper surface of the lower cutting board 2121. A Teflon protective cloth is arranged outside the strip, which can effectively prevent the melted heat shrinkable film from adhering to the lower cutting board 2121 while ensuring that the heat shrinkable film is cut through.

As shown in FIG. 4 , the film pulling module 220 includes a film pulling device 221 and a clamping device 222 , and the film pulling device 221 can pull the film material with the closed end of the film cutting module 210 to a predetermined position. At a predetermined distance, the clamping device 222 can pull the film pulling device 221 to a predetermined distance to fix the film material.

The number of the clamping devices 222 is two, and the positions of the clamping devices 222 can be adjusted to meet the packaging requirements of products of different specifications. For example, the distance between the clamping device 222 and the film cutting module 210 can be adjusted, or the distance between the two clamping devices 222 can also be adjusted, so that the packaging requirements of products with different lengths and widths can be met. . Each of the clamping devices 222 includes a clamping driving device 2221 and a clamping fixing block. The clamping driving device 2221 can drive the clamping and fixing blocks to open or close to clamp or close the film material. Relax. The clamping driving device 2221 in this embodiment is a rotating cylinder, and the rotating cylinder is fixed on the rotating cylinder fixing frame. The clamping fixed block includes a fixed block and a rotating block 2222 . The fixed block is fixed on the rotating cylinder fixing frame, the rotating block 2222 is fixedly connected with the piston rod of the rotating cylinder, and the piston rod of the rotating cylinder can drive the rotating block 2222 to rotate, so that the The fixed block and the rotating block 2222 form a clamp structure to clamp or loosen the film material.

The film pulling device 221 includes a film pulling sliding module 2211 and a film pulling strip 2212 slidably connected with the film pulling sliding module 2211 . The film pulling sliding module 2211 can drive the film pulling strip 2212 to slide along the sliding direction of the film pulling sliding module 2211 . The film pulling strip 2212 is provided with an escape opening 2213 corresponding to the clamping and fixing block, and also has a film dividing block 2214 protruding from the upper surface of the film pulling strip 2212 . When the film-pulling strip 2212 pulls the film bag, the film-pulling strip 2212 is located between the upper film and the lower film, and the film dividing block 2214 is used to separate the upper film and the lower film, so as to facilitate the Open the mouth of the film bag.

As shown in FIG. 5 to FIG. 7 , the transplanting film opening module 230 can transport the film bag prepared by the film cutting module 210 to the next process, and can open the bag mouth of the film bag.

The transplanting film opening module 230 includes a transplanting sliding module 231 and a film opening assembly 232 slidably connected with the transplanting sliding module 231; the film opening assembly 232 includes a lifting mechanism 2321 and a film clamping mechanism 2322 and clip-on membrane mechanism 2323.

The lifting mechanism 2321 includes a lifting sliding module.

The film clamping mechanism 2322 includes an upper bracket 23222 slidably connected with the lifting and sliding module, and at least two upper film clamping devices respectively disposed on the upper bracket 23222. In this embodiment, the upper film The number of clamping devices is two. The distance between the upper film clamping devices can be adjusted to meet the packaging requirements of products of different specifications. The upper film clamping device includes a first driving device 23221 and an upper film clamping assembly, the first driving device 23221 can drive the upper film clamping assembly to open or close, so as to carry out the upper film of the film material. Clamp or loosen. In this embodiment, the first driving device 23221 is an air cylinder, and the upper film clamping assembly includes an upper fixing plate 23223 and an upper clamping plate 23224. The upper fixing plate 23223 is fixedly connected to the upper bracket 23222, so The upper clamping plate 23224 is fixedly connected with the driving end of the first driving device 23221, and the first driving device 23221 drives the upper clamping plate 23224 to move up and down, thereby opening or closing the upper film clamping assembly.

The lower film clamping mechanism 2323 includes a lower support 23234 and at least two lower film clamping devices arranged on the lower support 23234; the distance between the lower film clamping devices is adjustable to adapt to different specifications of products. Packaging requirements. The lower film clamping device includes a second driving device 23235 and a lower film clamping assembly. The second driving device 23235 can drive the lower film clamping assembly to open or close, so as to carry out the lower film of the film material. Clamp or loosen. The lower film clamping assembly includes a rotating shaft 23233 passing through the lower support 23234 , a lower fixing plate 23236 fixed on the lower support 23234 , and a lower rotating plate 23231 fixed on the rotating shaft 23233 . The second driving device 23235 is an air cylinder, the second driving device 23235 is fixed by a fixing seat, the non-driving end of the second driving device 23235 is hinged with the fixing seat, and the driving end of the second driving device 23235 It is fixedly connected with one end of the rotating shaft 23233. When the driving end of the second driving device 23235 is extended or retracted, the rotating shaft 23233 can be driven to rotate, thereby opening or closing the lower film clamping assembly. Limiting and fixing blocks 23232 may also be provided on both sides of the lower fixing plate 23236 to limit the position of the lower fixing plate 23236 to avoid displacement.

The transplanting film opening module 230 further includes a supporting plate 234 and a connecting plate 233 slidably connected to the supporting plate 234; the lifting mechanism 2321 and the film clamping mechanism 2323 are fixedly connected to the connecting plate 233; When the connecting plate 233 slides along the supporting plate 234, it can drive the lifting mechanism 2321, the film clamping mechanism 2322 and the film clamping mechanism 2323 to slide together on the supporting plate 234 along the first direction; the transplanting sliding When the module 231 drives the supporting plate 234 to slide, the supporting plate 234 can drive the lifting mechanism 2321 , the film clamping mechanism 2322 and the film clamping mechanism 2323 to move along the second direction on the transplanting sliding module 231 sliding, the first direction and the second direction are perpendicular to each other. The device for driving the connecting plate 233 may be a linear module, an air cylinder, a timing belt, or the like. The purpose of sliding the connecting plate 233 on the supporting plate 234 in the first direction is to move the film clamping mechanism 2322 and the film clamping mechanism 2323 closer to the film material to clamp the film material. The purpose of the support plate 234 sliding along the second direction on the transplanting and sliding module 231 is to transport the film bag to the next process. When the film material bag is cut and needs to be transferred to the next process, the film clamping mechanism 2322 clamps the upper film of the film material bag and moves upward along the lifting mechanism 2321 to open the bag mouth of the film material bag.

The working principle of the film cutting mechanism 200 of the heat shrinkable film packaging machine in this embodiment is as follows: the film material is fed along the feeding direction, and at this time, the film pulling strip 2212 is located in the film cutting module 210 away from the clamping device On one side of the film, the film pulling strip 2212 and the film opening block 21113 are both located between the upper film and the lower film of the film material. The hot cutting knife 21130 moves downward to cut and seal the film material. The film pulling strip 2212 is driven by the film pulling sliding module 2211 to pull the film material and move towards the clamping device. At the same time, the upper film clamping device and the lower film clamp Driven by the connecting plate 233, the device moves toward the film material, and clamps the upper film and the lower film respectively, and moves together with the film pulling strip 2212 toward the clamping device under the drive of the transplanting sliding module 231. When reaching the position of the clamping device, the clamping device clamps the end of the film material, and the clamping part of the clamping device is just located at the avoidance opening 2213 of the film pulling strip 2212, when the clamping device clamps After holding the film material, the film pulling strip 2212 returns to the initial position. The hot cutting knife 21130 cuts the film material to form a film material bag with three sides sealed. The clamping device is loosened, and the upper film clamping device moves upward to open the bag mouth of the film material bag. At the same time, the support plate 234 slides along the transplanting sliding module 231 to the direction of the next process, thereby opening the bag mouth. The film bag is transported to the next process.

In the film cutting mechanism 200 of the present embodiment, the film pulling module 220 of the film pulling module 220 can pull the film material to a fixed length and keep the film material in a stretched state, which is conducive to the precise cutting of the film material. And the film cutting mechanism 200 also has the function of preventing hard cutting, film opening, anti-dropping of components, and bag opening, which has many functions, effectively improving the safety and stability of the equipment, and improving the packaging film. Flatness and precision, improve user experience.

Embodiment 2: The heat shrinkable film packaging machine of this embodiment includes the film cutting mechanism 200 in Embodiment 1, and further includes a film sleeve mechanism 100 located on the next process of the film cutting mechanism 200 . The transplanting film opening module 230 of the film cutting mechanism 200 clamps the film bag 20 with the opened bag mouth, and transports the film bag 20 to the material distribution module 120 and the tail film module 1110 located in the film sleeve mechanism 100 The film is placed on the support plate 1123 in between, so as to pack the product 10 to be packaged pushed by the pushing and shaping module 140 .

As shown in FIGS. 8 to 13 , the film sleeve mechanism 100 includes a material pushing and shaping module 140 , a material distributing module 120 , and a tail film cutting module 110 , and may also include a feeding module 130 .

As shown in FIG. 8 , the feeding module 130 is disposed at the feeding end of the wrapping mechanism 100 , and may be a conveyor belt mechanism for conveying the products to be packaged to the wrapping mechanism 100 .

As shown in FIG. 8 and FIG. 11 , the distributing module 120 is disposed at one end of the feeding module 130 close to the tail-cutting film module 110 , that is, the discharging end of the feeding module 130 , including The material distribution drive device 121 and the storage rack 122 disposed at the driving end of the material distribution drive device 121 are used to lift the product to be packaged 10 placed on the storage rack 122 to a preset height. The material distribution driving device 121 can be a device with a lifting function such as a cylinder, a hydraulic mechanism, etc. The storage rack 122 includes a fixed frame 1222 fixedly connected with the driving end of the cylinder and a plurality of fixed frame 1222. A roller 1221, the roller 1221 is connected with the fixed frame 1222 in a rolling manner. The feeding module 130 conveys the product to be packaged on the rack 122 of the distributing module 120, and the distributing driving device 121 lifts the product 10 to be packaged on the rack 122 to a preset height, so as to facilitate the The pushing and shaping module 140 pushes the material. The material distribution module 120 may further include a material distribution baffle 123 disposed at one end of the storage rack 122 close to the end of the cutting film module 110. When the storage rack 122 is lifted to a preset height, the storage The upper surface of the rack 122 is higher than the upper surface of the material distribution baffle 123 . The distribution baffle 123 is used to prevent the product 10 to be packaged from falling, and when the storage rack 122 is lifted to a preset height, the upper surface of the storage rack 122 is higher than the upper surface of the distribution baffle 123 . The surface can avoid interference with the separating baffle 123 when the pushing and shaping module 140 performs the pushing action.

As shown in FIG. 9 and FIG. 10 , the pushing and shaping module 140 includes a pushing sliding module 141 , a shaping fixing frame 143 slidably connected with the pushing sliding module 141 , and a shaping fixing frame 143 fixed on the shaping fixing frame 143 . The shaping device 144 and the ejector plate 142 on the upper part. The sliding direction of the pushing sliding module 141 is the same as the feeding direction of the feeding module 130 , and the pushing sliding module 141 is arranged parallel to the conveying direction of the feeding module 130 . The shaping device 144 includes a shaping driving device 1441 fixed on the shaping fixing frame 143 , and two shaping plates 1442 slidably connected to the shaping fixing frame 143 . The pushing plate 142 is located in the middle of the shaping fixing bracket, and the two shaping plates 1442 are located on two sides of the pushing plate 142 respectively. The shaping driving device 1441 can drive the two shaping plates 1442 to move in the direction of approaching or moving away from each other, so as to stretch or loosen the opening of the film bag 20 for packaging the product 10 to be packaged; When the fixing frame 143 moves toward the end-cutting film module 110 on the pushing sliding module 141 , the pushing plate 142 can push the product to be packaged 10 to move toward the end-cutting film module 110 . In this embodiment, the shaping drive device 1441 includes a shaping cylinder 14411 and a timing belt device 14412. The piston rod of the shaping cylinder 14411 is fixedly connected to one of the shaping plates (the first shaping plate 14421), and the shaping plate is simultaneously synchronized with the The timing belt on the side of the belt device 14412 close to the shaping cylinder 14411 is fixedly connected, and the other shaping plate (the second shaping plate 14422) is fixedly connected with the timing belt on the side of the timing belt device 14412 away from the shaping cylinder 14411. The driving direction of the shaping cylinder 14411 is the same as the conveying direction of the synchronous belt device 14412 , and both are perpendicular to the conveying direction of the feeding module 130 . When shaping is required, the piston rod of the shaping cylinder 14411 extends to drive the first shaping plate 14421 to move to the outside, the first shaping plate 14421 drives the synchronous belt to move, and the timing belt drives the second shaping plate 14422 to move to the outside until the shaping cylinder 14411 The piston rods are fully extended, and the two shaping plates 1442 are in an open state. When the two shaping plates 1442 need to be retracted, the piston rod of the shaping cylinder 14411 is retracted, which drives the first shaping plate 14421 to move inward, the first shaping plate 14421 drives the synchronous belt, and the synchronous belt drives the second shaping plate 14422 to also move inward. Until the piston rod of the shaping cylinder 14411 is fully retracted, the two shaping plates 1442 are in a retracted state. In order to make the movement of the two shaping plates 1442 more stable and precise, a slideway device may also be arranged between the two shaping plates 1442 and the shaping fixing frame 143 .

As shown in FIG. 13 , the tail film cutting module 110 includes a tail film cutter assembly 111 and a tail film lower chopping block assembly 112 for cutting off excess tail film of the film bag 20 .

The tail film cutter assembly 111 includes a cutter assembly fixing frame 1112 , a tail film cutter drive device 1111 fixed on the cutter assembly fixing frame 1112 , and a drive end of the tail film cutter drive device 1111 . Tail film hot cutting knife 1114.

A thermal insulation block 1115 is also arranged between the thermal cutting knife 1114 and the driving end of the driving device 1111 for thermal cutting of the thermal cutting film; the thermal cutting blade 1114 can also be provided with thermal insulating film on both sides of the thermal cutting knife 1114 respectively. Hot cutter guard 1113. The thermal insulation block 1115 of the thermal cutting knife can prevent the heat dissipated by the thermal cutting knife from affecting the service life of other components, and the protective plate 1113 of the thermal cutting knife can prevent the operator from accidentally touching the scalding accident. The tail film cutter driving device 1111 may be a cylinder device, and the cylinder device drives the hot-cutting door to move up and down.

As shown in FIG. 12 , the tail film lower anvil assembly 112 includes a lower anvil lifting module 1121 , a tail film lower anvil 1122 fixedly connected with the driving end of the lower anvil lifting module 1121 , and a lower anvil assembly located in the lower anvil assembly The film sleeve position support plate 1123 on the side close to the material distribution module 120 and the tail film position support plate 1124 located on the side of the lower anvil assembly away from the material distribution module 120, the lower anvil plate of the tail film moves up and down The module 1121 can drive the tail film lower anvil 1122 to move within a preset range. In this embodiment, the lower anvil plate lifting module 1121 is a screw module, and the screw module can precisely control the stroke of the tail film lower anvil plate 1122 . The end of the tail film position support plate 1124 away from the tail film lower anvil plate 1122 is further provided with a tail film baffle plate 1125 for preventing the products to be packaged from falling.

The tail film lower anvil block assembly 112 may further include a tail film clamping assembly 1126 fixedly connected with the tail film lower anvil 1122 , the number of the tail film clamping components 1126 is two, which are respectively arranged on the tail film The vicinity of both ends in the width direction of the lower cutting board 1122 is used to clamp the ends of the film bag 20 containing the product to be packaged 10 pushed by the pushing and shaping module 140 . In this embodiment, each of the tail film clamping assemblies 1126 includes a tail film holding cylinder 11261 fixedly connected to the tail film lower anvil 1122 , and a driving end fixedly connected to the driving end of the tail film holding cylinder 11261 . A frame 11262, a tail film holding block 11263 pivotally connected to the drive frame 11262, a tail film holding block bracket 11264 for fixing the tail film holding block 11263, and a fixed connection with the tail film lower anvil 1122 The tail membrane fixing block 11265. The tail film holding block bracket 11264 is fixedly connected to the tail film lower anvil plate 1122 and is located between the tail film fixing block 11265 and the tail film holding cylinder 11261 . The shape of the tail film holding block 11263 is an "L" shape, one end of the L shape is pivotally connected with the tail film drive frame 11262, and the other end of the L shape is used for connecting with the tail film fixing block 11265 contact to clamp the caudal membrane, and the middle corner of the L-shape is pivotally connected with the caudal membrane clamping bracket. The piston rod of the tail film clamping cylinder 11261 rises, and pushes the tail film holding block 11263 to rotate around the rotation axis of the tail film holding bracket. When the tail film holding block 11263 is in contact with the tail film fixing block 11265, it can Clamp the tail membrane. The piston rod of the tail holding cylinder is lowered, and the tail film holding block 11263 is pulled to reversely rotate around the rotation axis of the tail film holding bracket, so that the tail film holding block 11263 is separated from the surface of the tail film fixing block 11265, thereby releasing Clamped tail membrane.

The film sleeve mechanism 100 further includes a waste suction tail film device 150, and the waste suction tail film device 150 is disposed near the tail film holding assembly 1126, for example, can be disposed between the two tail film holding assemblies 1126, Used to collect the waste tail film held by the tail film holding assembly 1126 . The waste tail film device 150 includes a negative pressure device, an absorption pipe and a collector, and the cut waste tail film is sucked into the absorption pipe through negative pressure, and finally enters the collector for collection to prevent the cut waste tail film from scattering around. , affecting the surrounding environment.

The working principle of this embodiment is as follows: the product 10 to be packaged is transported by the feeding module 130 to the rack 122 of the distributing module 120, the distributing driving device 121 drives the rack 122 to rise to a preset height, and the previous process clamps The film bag 20 with the bag mouth opened is transported to the support plate 1123 of the film position, and the pushing and shaping module 140 is driven by the pushing sliding module 141 to push the product 10 to be packaged on the rack 122 to make the product to be packaged 10 be pushed. The product 10 enters the film bag 20, and after the packaged product 10 completely enters the film bag 20, the shaping driving device 1441 drives the two shaping plates 1442 to open to both sides, so as to open the bag mouth of the film bag 20, and the upper The device that clamps the film bag 20 releases the film bag 20 in the process, and the pushing and shaping module 140 continues to push the product to be packaged 10 and the film wrapped around the product to be packaged 10 to the end-cutting film position support plate 1124 For the bag 20, when the product to be packaged 10 and the film bag 20 are completely positioned on the support plate 1124 for the film position of the end film, the cutting board assembly 112 under the end film moves upward to the midpoint of the height of the product to be packaged 10, and the two end films The clamping assembly 1126 clamps the end of the film material bag 20, the end film hot cutter 1114 cuts off the excess end film, the cut end film is clamped by the end film clamping assembly 1126, and the waste end film device is turned on. 150. The two tail film clamping assemblies 1126 release the excess tail film held by them, and the waste tail film is sucked into the collector.

The film wrapping mechanism 100 of the heat-shrinkable film packaging machine of the present embodiment reshapes the film bag 20 through the material pushing and shaping module 140, and at the same time, the cutting board assembly 112 under the tail film can move upward to the position of the product 10 to be packaged according to a preset distance. At the midpoint of the height, the two end film clamping assemblies 1126 clamp the end of the film material bag 20, and then cut off the excess end film. The final cut and seal is located at the midpoint of the height of the product to be packaged 10 , the appearance is more beautiful, and a waste tail film collection device is provided, which is beneficial to the protection of the surrounding environment.

The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, all It is considered to be the range described in this specification.

The above examples only represent the preferred embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as limiting the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can also be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the appended claims.

Claims (10)

1. The utility model provides a film cutting mechanism of heat shrinkable film packaging machine which characterized in that includes: the film cutting module, the film pulling module and the transplanting and film opening module;

the film cutting module comprises a cutter assembly and a lower chopping board assembly and is used for cutting and sealing the film material to form a film material bag with one open end;

the film drawing module comprises a film drawing device and a clamping device, the film drawing device can draw the film material at one end of the film cutting module, which is closed, to a preset distance, and the clamping device can draw the film material at the preset distance to be fixed;

the transplanting membrane opening module can convey the membrane material bag prepared by the membrane cutting module to a next procedure, and can open the bag opening of the membrane material bag.

2. The film cutting mechanism of the shrink film packaging machine according to claim 1, wherein: the cutter assembly comprises a fixed assembly and a movable assembly;

the fixing assembly comprises a fixing plate and a driving device arranged on the fixing plate;

the moving assembly is connected with the fixed plate in a sliding manner and comprises a mounting plate and a hot cutter arranged at one end of the mounting plate close to the lower chopping block assembly;

the driving device can drive the moving assembly to move on the fixing plate along the vertical direction.

3. The film cutting mechanism of the shrink film packaging machine according to claim 2, wherein: the moving assembly further comprises a hard cutting prevention device, and the hard cutting prevention device comprises a rebound device, an inductor and a shading plate; the light screen is connected with the mounting plate in a sliding manner, and the hot cutter is fixed at one end of the light screen close to the lower chopping board assembly; the sensor is arranged on the mounting plate and comprises a slot-shaped hole for light sensing; the rebounding device is arranged on the mounting plate and is positioned above the shading plate, and the rebounding device can be compressed when the shading plate moves upwards; when the rebounding device is in a free state, the light shielding plate is located below the slot-shaped hole.

4. The film cutting mechanism of the shrink film packaging machine according to claim 2, wherein: the cutter component also comprises an anti-falling device, the anti-falling device at least comprises a spring component, and the spring component comprises a spring and a fixed block respectively arranged at one side of the fixed plate, which is close to the mounting plate; and two ends of the spring are respectively connected with the two fixing blocks.

5. The film cutting mechanism of the shrink film packaging machine according to claim 1, wherein: the number of the clamping devices is two, and the positions of the clamping devices can be adjusted to meet the packaging requirements of products with different specifications; each clamping device comprises a clamping driving device and a clamping fixing block, and the clamping driving device can drive the clamping fixing block to open or close so as to clamp or release the membrane material;

the film drawing device comprises a film drawing sliding module and a film drawing strip which is connected with the film drawing sliding module in a sliding manner; the film drawing strip is provided with an avoiding opening corresponding to the clamping fixed block and a film separating block protruding out of the surface of the film drawing strip.

6. The film cutting mechanism of the shrink film packaging machine according to claim 1, wherein: the transplanting film opening module comprises a transplanting sliding module and a film opening assembly in sliding connection with the transplanting sliding module; the film opening assembly comprises a lifting mechanism, a film clamping and feeding mechanism and a film clamping and discharging mechanism;

the lifting mechanism comprises a lifting sliding module;

the film clamping and feeding mechanism comprises an upper bracket in sliding connection with the lifting sliding module and at least two film clamping devices respectively arranged on the upper bracket; the distance between the upper film clamping devices is adjustable so as to meet the packaging requirements of products with different specifications; the upper film clamping device comprises a first driving device and an upper film clamping assembly, and the first driving device can drive the upper film clamping assembly to open or close so as to clamp or release the upper film of the film material;

the lower film clamping mechanism comprises a lower bracket and at least two lower film clamping devices arranged on the lower bracket; the distance between the lower film clamping devices is adjustable so as to meet the packaging requirements of products with different specifications; the lower film clamping device comprises a second driving device and a lower film clamping assembly, and the second driving device can drive the lower film clamping assembly to open or close so as to clamp or release the lower film of the film material;

the transplanting membrane opening module also comprises a support plate and a connecting plate in sliding connection with the support plate; the lifting mechanism and the film clamping mechanism are both fixedly connected with the connecting plate; the connecting plate can drive the lifting mechanism, the film clamping mechanism and the film clamping mechanism to slide on the supporting plate together along a first direction when sliding along the supporting plate; when the transplanting sliding module drives the supporting plate to slide, the supporting plate can drive the lifting mechanism, the film clamping mechanism and the film clamping mechanism to slide on the transplanting sliding module along a second direction, and the first direction is perpendicular to the second direction.

7. A thermal shrinkage film packaging machine is characterized in that: comprising a film cutting mechanism according to any one of claims 1 to 6.

8. The shrink film wrapping machine of claim 7 wherein: the thermal shrinkage film packaging machine further comprises a film covering mechanism, wherein the film covering mechanism comprises a material pushing and shaping module, a material distributing module, a tail cutting film module and a tail cutting film support assembly; the film cutting module is transplanted, so that the film material bag prepared by the film cutting module can be conveyed to a position between the material separating module and the tail cutting film module, and the bag opening of the film material bag can be opened to sleeve the film on the product to be packaged.

9. The shrink film wrapping machine of claim 8 wherein: the material distribution module comprises a material distribution driving device and a material placing frame arranged at the driving end of the material distribution driving device, and the material distribution driving device is used for lifting a product to be packaged on the material placing frame to a preset height;

the material pushing and shaping module comprises a material pushing sliding module, a shaping fixing frame in sliding connection with the material pushing sliding module, a shaping device fixed on the shaping fixing frame and a material pushing plate; the shaping device comprises a shaping driving device and two shaping plates, and the shaping driving device can drive the two shaping plates to move towards the directions close to or away from each other so as to open or loosen the opening of a film material bag for packaging the product to be packaged; when the shaping fixing frame moves on the material pushing sliding module towards the direction of the tail cutting film module, the material pushing plate can push the product to be packaged to move towards the direction of the tail cutting film module;

the tail film cutting module comprises a tail film cutter assembly and a tail film lower anvil plate assembly and is used for cutting off redundant tail films of the film material bag;

the tail film cutting support assembly is arranged on one side, away from the material distributing module, of the tail film cutting module and used for supporting a product to be packaged and sleeving a film material bag outside the product to be packaged so as to cut off redundant tail films.

10. The shrink film wrapping machine of claim 9 wherein: chopping block subassembly under tail membrane include chopping block lift module down and with chopping block under the tail membrane of lower chopping block lift module's drive end fixed connection, chopping block lift module can drive under the tail membrane chopping block removes in predetermineeing the within range.

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