CN220199749U

CN220199749U - Packaging bag forming equipment

Info

Publication number: CN220199749U
Application number: CN202321479378.5U
Authority: CN
Inventors: 何宗荣
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-06-09
Filing date: 2023-06-09
Publication date: 2023-12-19
Anticipated expiration: 2033-06-09

Abstract

The utility model discloses packaging bag forming equipment, which comprises a frame; the first unreeling mechanism is used for releasing the first film material; the winding mechanism is connected with the first film material; the preforming mechanism can be abutted against the first membrane material to form a first lower membrane section, a first corner part, a first upper membrane section and a storage containing cavity with an opening at the side part, which are connected in sequence; the conveying device is used for inputting the product into the storage cavity and conveying the product coated by the first film material forwards; an end welding mechanism for welding one ends of the first lower film section and the first upper film section to form a first welding strip; and the side welding mechanism is used for respectively welding the two side edges of the first lower film section and the first upper film section to form a second welding belt and a third welding belt. The packaging bag forming equipment can drive the first film material to be clung to the outer surface of the product, avoid the packaging bag from wrinkling, be favorable to attaching labels and automatic identification production, and be applicable to the packaging bags with various sizes and be convenient to manufacture the packaging bags.

Description

Packaging bag forming equipment

Technical Field

The utility model relates to the technical field of packaging bags, in particular to packaging bag forming equipment.

Background

In the prior art, a common packaging bag mostly adopts a back sealing type packaging bag, wherein edges of a film material, which are positioned at two sides of a conveying direction, are folded towards the middle part, and then the edges of the two sides of the film material are heat-sealed together by a heating roller device to form the packaging bag with a welding belt on the back surface.

The forming equipment of this kind of wrapping bag needs to adopt the forming mechanism with the inner chamber shape size looks adaptation of wrapping bag to guide the both sides border of membrane material towards the middle part receipts folding, when needs manufacturing different wrapping bags, then need make the forming mechanism of corresponding shape and apply, is unfavorable for improving wrapping bag forming equipment's application scope, leads to production inconvenient, manufacturing cost is higher. Moreover, adopt the heating roller device to heat-seal the both sides border of membrane material together the mode be easy to appear the rosin joint or weld the leakproofness is relatively poor to lead to the production of defective products, when needs carry out the pile up neatly with a plurality of back of the body package bags and place, the welding strip of back of the body package bag forms the arch, influences the depositing and the transportation of packing product, leads to the label to wrinkled easily when needs are at the back of the package bag subsides label, also is unfavorable for automatic discernment production.

In the related art, there has also been proposed a bag forming apparatus which covers upper and lower surfaces of a product with upper and lower film materials and then heat-seals the upper and lower film materials at peripheral edges of the product. The upper and lower films are automatically unreeled, and the wrapped product has a certain thickness, so that the film cannot be well attached to the surface of the product during lower pressing and sealing, thereby wrinkling of the packaging bag is caused, and the packaging quality is affected.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, one of the purposes of the utility model is to provide a packaging bag forming device which is applicable to packaging bags with various sizes, is convenient to manufacture and has stable quality, and the packaging bag manufactured by the packaging bag forming device can be tightly attached to the outer surface of a product, so that the wrinkling of the packaging bag is avoided, and the labeling and automatic identification production are facilitated.

According to an embodiment of the utility model, a packaging bag forming device comprises: a frame; the first unreeling mechanism is arranged on the rack and used for connecting one end of the first membrane material to release the first membrane material; the rolling mechanism is arranged on the frame and used for connecting the other end of the first film material to roll the first film material; the preforming mechanism is arranged on the frame and can be abutted against one side of the first film material to bend the first film material to form a first lower film section, a first corner part and a first upper film section which are sequentially connected, and the first lower film section, the first corner part and the first upper film section enclose a storage containing cavity with an opening at the side part; the transmission device is arranged on the rack and is used for inputting a product to be packaged into the storage cavity and conveying the product coated by the first film forwards; the end welding mechanism and the side welding mechanism are respectively arranged at intervals along the transmission direction of the transmission device, the end welding mechanism is used for welding one ends, far away from the first corner, of the first lower film section and the first upper film section together to form a first welding belt, the side welding mechanism is used for respectively welding two adjacent side edges of the first lower film section and the first upper film section together to form a second welding belt and a third welding belt, and the first film material, the first welding belt, the second welding belt and the third welding belt jointly define a rectangular cladding space.

The packaging bag forming equipment according to the embodiment of the utility model at least comprises the following components

The beneficial effects are that:

the packaging bag forming equipment comprises a first packaging bag forming device, a second packaging bag forming device, a first welding device, a second packaging bag forming device and a third packaging bag forming device.

In some embodiments of the present utility model, the frame is provided with a plurality of conveying rollers for guiding the first film material to move from the first unreeling mechanism to the reeling mechanism, wherein the first film material between the two conveying rollers corresponds to the conveying device, the preforming mechanism comprises a pushing member and a first driver connected with the pushing member, the first driver drives the pushing member to abut against the first film material to form the first lower film section, the first corner portion and the first upper film section, and the preforming mechanism further comprises positioning components for contacting two ends of the inner surface of the first corner portion so as to stabilize the shape of the storage cavity.

In some embodiments of the present utility model, the pushing member is a rod member disposed along a width direction of the first film material, the first driver includes two push rods respectively connected to two ends of the rod member, one end of the push rod away from the rod member is disposed obliquely upward, the push rod is connected with a first linear driver for driving the push rod to move telescopically along a length direction, the frame is rotatably provided with a mounting frame, and the first linear driver is disposed on the mounting frame.

In some embodiments of the present utility model, the positioning assembly includes two positioning posts oppositely disposed at both sides of the width direction of the first film material, and a second linear driver connected to the positioning posts, the second linear driver being configured to drive the positioning posts to extend into or withdraw from the first corner portion along the width direction of the first film material, the second linear driver being connected to a third linear driver that drives the second linear driver and the positioning posts to move along the conveying direction of the conveying device.

In some embodiments of the present utility model, the conveying device includes a feeding conveying mechanism and a discharging conveying mechanism respectively located at two sides of the first film material, the feeding conveying mechanism includes a receiving platform for receiving a product to be packaged and a side pushing mechanism provided at one side of the receiving platform for pushing the product on the receiving platform into the storage cavity along a side opening, the end welding mechanism includes a cutting assembly for cutting the first film material formed with the first welding strip, and the discharging conveying mechanism is used for receiving the product coated with the first film material after being cut by the cutting assembly.

In some embodiments of the present utility model, the end welding mechanism includes a first lower heat seal blade and a first upper heat seal blade, the first lower heat seal blade is provided with a first lower heat seal and a second lower heat seal extending in a width direction of the first film material at intervals, the first upper heat seal blade is provided with a first upper heat seal and a second upper heat seal extending in the width direction of the first film material at intervals, the first lower heat seal and the first upper heat seal are in contact with each other to form the first welding strip on the first film material, the second lower heat seal and the second upper heat seal are in contact with each other to form a fourth welding strip on the first film material, the cutting assembly is provided between the first lower heat seal and the second lower heat seal strip in parallel, and/or the cutting assembly is provided between the first upper heat seal and the second upper heat seal strip in parallel.

In some embodiments of the present utility model, the side welding mechanism includes a first side welding assembly and a second side welding assembly respectively located at two sides of a conveying direction of the discharging conveying mechanism, the first side welding assembly and the second side welding assembly are respectively used for forming the second welding belt and the third welding belt on the first film material, and a vacuum pumping assembly for pumping air between the first film material and a product is arranged on the first side welding assembly or the second side welding assembly.

In some embodiments of the present utility model, a pressing moving mechanism is disposed on the frame above the conveying device, and the pressing moving mechanism is used for driving the first upper film section to cling to the upper surface of the product and move towards the position of the side welding mechanism.

In some embodiments of the present utility model, the pressing moving mechanism includes two pressing and traversing assemblies respectively disposed at two sides of the conveying direction of the conveying device, the pressing and traversing assemblies include a traversing driver disposed on the frame and a lifting driver connected to the traversing driver, and an output end of the lifting driver is connected to a pressing plate.

In some embodiments of the present utility model, a second unreeling mechanism is further provided on the frame, the second unreeling mechanism is used for releasing a buffer layer, one end of the buffer layer, which is far away from the second unreeling mechanism, is connected to the reeling mechanism, a portion of the buffer layer, which is close to the preforming mechanism, is attached to a side surface of the first film material, and the preforming mechanism can abut against the buffer layer to bend the buffer layer to form a second lower wrapping surface, a second side wrapping surface and a second upper wrapping surface, which are sequentially connected.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic view showing the structure of an embodiment of a bag forming apparatus of the present utility model;

FIG. 2 is a schematic diagram of the embodiment of FIG. 1 when the first unreeling mechanism, the second unreeling mechanism, the reeling mechanism, the first film, and the buffer layer are combined and the preforming mechanism is in operation;

FIG. 3 is a schematic view of the combination of the preforming mechanism, transfer device, end welding mechanism, side welding mechanism and hold-down movement mechanism of the embodiment of FIG. 1;

FIG. 4 is a schematic illustration of the forming process of one embodiment of a package made by the package forming apparatus;

fig. 5 is a schematic structural view of the first film and the buffer layer formed with the first welding strip and the fourth welding strip.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1 to 4, a package forming apparatus of the present utility model includes: a frame 100; the first unreeling mechanism 200 is arranged on the frame 100 and is used for connecting one end of the first film material 10 to release the first film material 10; the winding mechanism 300 is arranged on the frame 100 and is used for connecting the other end of the first film material 10 to wind the first film material 10; the preforming mechanism 400 is arranged on the frame 100 and can be abutted against one side of the first film material 10 to bend the first film material 10 to form a first lower film section 11, a first corner part 12 and a first upper film section 13 which are sequentially connected, and the first lower film section 11, the first corner part 12 and the first upper film section 13 enclose a storage cavity with an open side part; the conveying device 500 is arranged on the frame 100 and is used for conveying a product to be packaged into the storage cavity and conveying the product coated by the first film material 10 forwards; the end welding mechanism 600 and the side welding mechanism 700 are respectively arranged at intervals along the conveying direction of the conveying device 500, the end welding mechanism 600 is used for welding one ends of the first lower film section 11 and the first upper film section 13 far away from the first corner portion 12 together to form a first welding belt 14, the side welding mechanism 700 is used for respectively welding two adjacent side edges of the first lower film section 11 and the first upper film section 13 together to form a second welding belt 15 and a third welding belt 16, and the first film material 10, the first welding belt 14, the second welding belt 15 and the third welding belt 16 jointly define a rectangular cladding space.

The above packaging bag forming equipment utilizes preforming mechanism 400 to drive first membrane material 10 to buckle and form first membrane section 11, first corner 12, first upper film section 13 and put the thing appearance chamber, after putting the thing appearance chamber with the product along the lateral opening input, first membrane section 11, first corner 12, first upper film section 13 hugs closely the bottom surface, a side and the upper surface of product respectively, then form first welding strip 14 through tip welding mechanism 600 and lateral part welding mechanism 700, second welding strip 15 and third welding strip 16, thereby hug closely the surface of product, avoid the wrapping bag wrinkling, be favorable to attaching the label and automated identification production, moreover can be applicable to the wrapping bag of multiple size, the production manufacturing facility to the wrapping bag.

Referring to fig. 1 and 2, in some embodiments of the present utility model, the frame 100 is provided with a plurality of conveying rollers 110, the conveying rollers 110 are used for guiding the first film material 10 to move from the first unreeling mechanism 200 to the reeling mechanism 300, wherein the first film material 10 between the two conveying rollers 110 corresponds to the conveying device 500, the preforming mechanism 400 comprises a pushing member 410 and a first driver 420 connected with the pushing member 410, the first driver 420 drives the pushing member 410 to abut against the first film material 10 to form a first lower film section 11, a first corner portion 12 and a first upper film section 13, and the preforming mechanism 400 further comprises a positioning assembly 430, and the positioning assembly 430 is used for contacting two ends of an inner surface of the first corner portion 12 so as to stabilize the shape of the accommodating cavity. It can be appreciated that when the first driver 420 drives the pushing member 410 to abut against the first film material 10 between the two conveying rollers 110, the pushing member 410 abuts against the first film material 10 and moves according to a preset stroke, at this time, the first film material 10 between the two conveying rollers 110 can form a storage cavity with an open side, and then the positioning assembly 430 abuts against two ends of the inner surface of the first corner 12 to keep the first film material 10 in a tensioned state, so as to stabilize the storage cavity and the shape of the open side thereof, and then the pushing member 410 exits the storage cavity so as to facilitate the product entering from the open side of the storage cavity. The preforming mechanism 400 is simple in construction and convenient to use.

In addition, it should be noted that, by adjusting the moving stroke of the pushing member 410, products to be packaged with different length sizes can be adapted. Referring to fig. 2 and fig. 4, in the preferred embodiment of the present utility model, the length dimensions of the first lower film section 11 and the first upper film section 13 are smaller than the length dimension of the product, when the product to be packaged is placed between the first lower film section 11 and the first upper film section 13, so that one side wall of the product abuts against the first corner 12 and the bottom surface of the product abuts against the first lower film section 11, at this time, the winding mechanism 300 is locked, since the length dimensions of the first lower film section 11 and the first upper film section 13 are smaller than the length dimension of the product, the first lower film section 11 can only abut against a portion of the bottom surface of the product, the first upper film section 13 can only abut against a portion of the upper surface of the product, and at this time, the product is continuously pushed to enable the first unwinding mechanism 200 to release the first film material 10, and the released first film material 10 sequentially moves along the bottom surface, the side surface and the upper surface of the product, so that the first lower film section 11 and the first upper film section 13 can be extended to be flat and cover the surface of the product, and the rolling mechanism can ensure that the first film section 11 can abut against the surface of the product in a flat manner, and the label can be automatically attached to the outer surface of the packaging bag in a label stacking manner, and the label wrapping label is avoided.

Referring to fig. 3, in some embodiments of the present utility model, in order to ensure that the first film 10 does not wrinkle in the width direction, the pushing member 410 is a rod member disposed along the width direction of the first film 10, in order to ensure that the rod member abuts against the first film 10 parallel to the width direction of the first film 10, the first driver 420 includes two push rods 421 respectively connected to two ends of the rod member, and simultaneously, in order to avoid products to push into the storage container, one end of the push rod 421 away from the rod member is disposed obliquely upward, the push rod 421 is connected with a first linear driver 422 driving the push rod 421 to move telescopically along the length direction, the frame 100 is rotatably provided with a mounting frame 423, and the first linear driver 422 is disposed on the mounting frame 423. It will be appreciated that the mounting frame 423 is rotatably provided on the frame 100 to adjust the angular position of the push rod 421, so as to ensure that the rod member forms the first corner 12 of the predetermined shape and position on the first film 10.

Referring to fig. 3, in some embodiments of the present utility model, the positioning assembly 430 includes two positioning posts 431 oppositely disposed at both sides of the width direction of the first film material 10 and a second linear driver 432 connected to the positioning posts 431, the second linear driver 432 being for driving the positioning posts 431 to extend into or withdraw from the first corner 12 in the width direction of the first film material 10, the second linear driver 432 being connected to a third linear driver 433 for driving the second linear driver 432 and the positioning posts 431 to move in the conveying direction of the conveying device 500. It can be appreciated that when the two second linear drivers 432 respectively drive the positioning posts 431 to extend into the corresponding side edges of the first film material 10 of the first corner portion 12, the two positioning posts 431 can keep the first film material 10 forming a U shape with side openings. It should be noted that, when the size of the package bag to be formed is larger, the first film material 10 having a U-shape with a larger size can be formed by driving the second linear driver 432 and the positioning column 431 together along the conveying direction of the conveying device 500 by the third linear driver 433 due to the limited movement stroke of the first linear driver 422, so that the method is suitable for manufacturing the package bag with a larger size.

In this embodiment, the first linear driver 422 and the second linear driver 432 are all cylinders, and the third linear driver 433 is a linear module arranged horizontally, however, in other embodiments, the first linear driver 422, the second linear driver 432, and the third linear driver 433 may be replaced by linear driving devices such as an electric push rod 421.

Referring to fig. 1 and 3, in some embodiments of the present utility model, the transfer device 500 includes a feeding and discharging conveyor mechanism 510 and 520 respectively located at both sides of the first film material 10, the feeding conveyor mechanism 510 includes a receiving table 511 for receiving a product to be packaged and a side pushing mechanism 512 provided at one side of the receiving table 511 for pushing the product on the receiving table 511 into the receiving cavity along the side opening, the end welding mechanism 600 has a cutting assembly 610 for cutting the first film material 10 formed with the first welding strip 14, and the discharging conveyor mechanism 520 is for receiving the product coated with the first film material 10 cut by the cutting assembly 610. Referring to fig. 3 and 4, it can be understood that, when the preforming mechanism 400 drives the first film 10 to bend to form the first lower film segment 11, the first corner 12, the first upper film segment 13 and the accommodating cavity, the side pushing mechanism 512 pushes the product into the accommodating cavity along the side opening of the accommodating cavity, the first lower film segment 11, the first corner 12 and the first upper film segment 13 are respectively clung to the bottom surface, one side surface and the upper surface of the product, after the end welding mechanism 600 forms the first welding strip 14, the first film 10 is wrapped around the product along the conveying direction of the conveying device 500, at this time, two sides of the first film 10 along the conveying direction of the conveying device 500 are not sealed, and the cutting assembly 610 cuts the first film 10 with the first welding strip 14, so that the product wrapped with the first film 10 is conveyed to the position of the side welding mechanism 700 and welded to obtain the second welding strip 15 and the third welding strip 16. Referring to fig. 3, in this embodiment, a plurality of lifting frames for the rollers and capable of moving up and down relative to the rollers are provided on the receiving platform 511, the lifting frames extend upward from the rollers to receive the product to be packaged, a belt for conveying the product to the upper side of the rollers is provided on the lifting frames, and after the lifting frames descend, the product can fall onto the rollers, and is pushed into the storage chamber by the side pushing mechanism 512.

Referring to fig. 3 and 5, in some embodiments of the present utility model, the end welding mechanism 600 includes a first lower heat seal blade 620 and a first upper heat seal blade 630, the first lower heat seal blade 620 is spaced apart by a first lower heat seal 621 and a second lower heat seal 622 extending in the width direction of the first film material 10, the first upper heat seal blade 630 is spaced apart by a first upper heat seal bar 631 and a second upper heat seal bar 632 extending in the width direction of the first film material 10, the first lower heat seal 621 and the first upper heat seal bar 631 contact each other to form a first welding strip 14 on the first film material 10, the second lower heat seal 622 and the second upper heat seal bar 632 contact each other to form a fourth welding strip 17 on the first film material 10, and the cutting assembly 610 is disposed in parallel between the first lower heat seal 621 and the second lower heat seal bar 622, and/or the cutting assembly 610 is disposed in parallel between the first upper heat seal bar 631 and the second upper heat seal bar 632. In this embodiment, the cutting assembly 610 is a knife blade with an upward edge disposed between the first lower heat seal 621 and the second lower heat seal 622, and the knife blade is connected with a cylinder for driving the knife blade to lift. It should be noted that, when the first lower heat seal blade 620 and the first upper heat seal blade 630 approach each other, the first lower heat seal 621 and the first upper heat seal 631 contact each other to form the first welding strip 14 on the first film material 10, the second lower heat seal 622 and the second upper heat seal 632 contact each other to form the fourth welding strip 17 on the first film material 10, and then the air cylinder drives the blade to lift up to cut off the broken line position shown in fig. 5 where the first film material 10 is located between the first welding strip 14 and the fourth welding strip 17, at this time, the first film material 10 wrapped outside the product can be separated from the first film material 10 on the first unreeling mechanism 200 and the reeling mechanism 300, and the fourth welding strip 17 is formed on the first film material 10 connected between the first unreeling mechanism 200 and the reeling mechanism 300, so that the first film material 10 can be continuously unreeled for wrapping the next product.

Referring to fig. 3, in some embodiments of the present utility model, the side welding mechanism 700 includes a first side welding assembly 710 and a second side welding assembly 720 respectively located at both sides of the conveying direction of the outfeed conveying mechanism 520, the first side welding assembly 710 and the second side welding assembly 720 are respectively used to form the second welding strip 15 and the third welding strip 16 on the first film material 10, and in order to prevent more gas from existing between the product and the first film material 10 to affect the surface of the first film material 10 that better adheres to the product, a vacuum pumping assembly 730 for pumping air between the first film material 10 and the product is provided on the first side welding assembly 710 or the second side welding assembly 720.

Referring to fig. 1, in some embodiments of the present utility model, in order to ensure that the first film material 10 can be adhered to the surface of the product before welding to form the second welding strip 15 and the third welding strip 16, and can also function to position the welding positions of the second welding strip 15 and the third welding strip 16, a pressing moving mechanism 800 located above the conveying device 500 is provided on the frame 100, and the pressing moving mechanism 800 is used to drive the first upper film section 13 to be adhered to the upper surface of the product and move toward the position of the side welding mechanism 700.

Referring to fig. 3, in some embodiments of the present utility model, the pressing and moving mechanism 800 includes two pressing and moving assemblies 810 provided at both sides of the conveying direction of the conveying device 500, respectively, the pressing and moving assemblies 810 include a moving driver 811 provided at the frame 100 and a lifting driver 812 connected to the moving driver 811, and a pressing plate 813 is connected to an output end of the lifting driver 812. It will be appreciated that after the end welding mechanism 600 forms the first welding strip 14 on the first film material 10, the cutting assembly 610 cuts the first film material 10 at the side of the first welding strip 14 away from the product, and then one of the pressing and traversing assemblies 810 works, specifically, the lifting driver 812 drives the pressing and traversing plate 813 to abut against the first upper film segment 13 to abut against the upper surface of the product, at this time, the first lower film segment 11 abuts against the conveying device 500, and the traversing driver 811 cooperates with the conveying device 500 to drag the product wrapped with the first film material 10 to the corresponding position of the side welding mechanism 700, so as to achieve the welding of the second welding strip 15 and the third welding strip 16, at the same time, the preforming mechanism 400 drives the first film material 10 to bend again to form the first lower film segment 11, the first corner portion 12, the first upper film segment 13 and the storage cavity, and the other product is input into the storage cavity, and after the end welding mechanism 600 forms the first welding strip 14 on the first film material 10 outside the product, the other pressing and traversing assembly 810 moves above the product to repeat the actions. The pressing movement mechanism 800 having the above structure can maintain the continuity of the packing work without waiting, and can increase the packing rate.

Referring to fig. 1, in some embodiments of the present utility model, a second unreeling mechanism 900 is further provided on the frame 100, where the second unreeling mechanism 900 is used for releasing the buffer layer 20, one end of the buffer layer 20 away from the second unreeling mechanism 900 is connected to the reeling mechanism 300, a portion of the buffer layer 20 near the preforming mechanism 400 is attached to a side surface of the first film 10, and the preforming mechanism 400 can abut against the buffer layer 20 to bend the buffer layer 20 to form a second lower wrapping surface 21, a second side wrapping surface 22 and a second upper wrapping surface 23 which are sequentially connected. It will be appreciated that when the product is an item that is prone to damage, the provision of the cushioning layer 20 is effective to protect the product from damage due to impact, drop, etc. And, preferably, one end of the first lower film segment 11 far away from the first corner 12, one end of the first upper film segment 13 far away from the first corner 12, one end of the second lower wrapping surface 21 far away from the second side wrapping surface 22, and one end of the second upper wrapping surface 23 far away from the second side wrapping surface 22 are welded together by the first welding strip 14, wherein two sides of the first lower film segment 11, the second lower wrapping surface 21, the first upper film segment 13 and the second upper wrapping surface 23 are respectively heat-sealed to form the second welding strip 15 and the third welding strip 16, the buffer layer 20 and the first film material 10 can form a packaging bag with a double-layer structure, the buffer layer 20 cannot move relative to the first film material 10, and the tight combination of the first film material 10, the buffer layer 20 and the product is ensured, so that the whole body formed by the first film material 10 and the buffer layer 20 can be tightly adhered to the outer surface of the product, and the packaging quality of the product is ensured.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A package bag forming apparatus, comprising:

a frame (100);

the first unreeling mechanism (200) is arranged on the rack (100) and is used for connecting one end of the first membrane material (10) to release the first membrane material (10);

the rolling mechanism (300) is arranged on the frame (100) and is used for connecting the other end of the first film material (10) to roll the first film material (10);

the preforming mechanism (400) is arranged on the frame (100) and can be abutted against one side of the first film material (10) so as to bend the first film material (10) to form a first lower film section (11), a first corner part (12) and a first upper film section (13) which are sequentially connected, and the first lower film section (11), the first corner part (12) and the first upper film section (13) enclose a storage cavity with an opening at the side part;

the conveying device (500) is arranged on the rack (100) and is used for inputting products to be packaged into the storage cavity and conveying the products covered by the first film material (10) forwards;

the end welding mechanism (600) and the side welding mechanism (700) are respectively arranged at intervals along the transmission direction of the transmission device (500), the end welding mechanism (600) is used for welding one ends, far away from the first corner (12), of the first lower film section (11) and the first upper film section (13) together to form a first welding strip (14), the side welding mechanism (700) is used for respectively welding two adjacent side edges of the first lower film section (11) and the first upper film section (13) together to form a second welding strip (15) and a third welding strip (16), and the first film material (10), the first welding strip (14), the second welding strip (15) and the third welding strip (16) jointly define a rectangular cladding space.

2. The package bag forming apparatus according to claim 1, wherein:

the frame (100) is provided with a plurality of conveying rollers (110), the conveying rollers (110) are used for guiding the first film material (10) to move from the first unreeling mechanism (200) to the reeling mechanism (300), wherein the first film material (10) between the two conveying rollers (110) corresponds to the conveying device (500), the preforming mechanism (400) comprises a pushing piece (410) and a first driver (420) connected with the pushing piece (410), the first driver (420) drives the pushing piece (410) to abut against the first film material (10) to form the first lower film section (11), the first corner portion (12) and the first upper film section (13), and the preforming mechanism (400) further comprises a positioning assembly (430), and the positioning assembly (430) is used for contacting with two ends of the inner surface of the first corner portion (12) so as to stabilize the shape of the storage cavity.

3. A package forming apparatus according to claim 2, wherein:

the pushing piece (410) is a rod piece arranged along the width direction of the first membrane material (10), the first driver (420) comprises two push rods (421) which are respectively connected with two ends of the rod piece, the push rods (421) are far away from one ends of the rod piece and are obliquely arranged upwards, the push rods (421) are connected with a first linear driver (422) which drives the push rods to move in a telescopic mode along the length direction, the frame (100) is rotatably provided with a mounting frame (423), and the first linear driver (422) is arranged on the mounting frame (423).

4. A package forming apparatus according to claim 2, wherein:

the positioning assembly (430) comprises two positioning columns (431) which are oppositely arranged on two sides of the width direction of the first film material (10) and second linear drivers (432) connected with the positioning columns (431), the second linear drivers (432) are used for driving the positioning columns (431) to extend into or withdraw from the first corner portions (12) along the width direction of the first film material (10), and the second linear drivers (432) are connected with third linear drivers (433) which are used for driving the second linear drivers (432) and the positioning columns (431) to move along the conveying direction of the conveying device (500).

5. The package bag forming apparatus according to claim 1, wherein:

the conveying device (500) comprises a feeding conveying mechanism (510) and a discharging conveying mechanism (520) which are respectively arranged on two sides of the first film material (10), the feeding conveying mechanism (510) comprises a receiving table (511) for receiving products to be packaged and a side pushing mechanism (512) which is arranged on one side of the receiving table (511) and used for pushing the products on the receiving table (511) into the storage cavity along a side opening, the end welding mechanism (600) is provided with a cutting assembly (610) for cutting the first film material (10) formed with the first welding belt (14), and the discharging conveying mechanism (520) is used for receiving the products which are cut by the cutting assembly (610) and are coated with the first film material (10).

6. The package forming apparatus according to claim 5, wherein:

the end welding mechanism (600) comprises a first lower heat sealing knife (620) and a first upper heat sealing knife (630), the first lower heat sealing knife (620) is arranged at intervals to form a first lower heat sealing strip (621) and a second lower heat sealing strip (622) which extend in the width direction of the first film material (10), the first upper heat sealing knife (630) is arranged at intervals to form a first upper heat sealing strip (631) and a second upper heat sealing strip (632) which extend in the width direction of the first film material (10), the first lower heat sealing strip (621) and the first upper heat sealing strip (631) are contacted with each other to form a first welding strip (14) on the first film material (10), the second lower heat sealing strip (622) and the second upper heat sealing strip (632) are contacted with each other to form a fourth welding strip (17) on the first film material (10), the cutting assembly (610) is arranged between the first lower heat sealing strip (621) and the second lower heat sealing strip (622) in parallel, and/or the first cutting assembly (631) is arranged between the first heat sealing strip (622) and the second heat sealing strip (610) in parallel.

7. The package forming apparatus according to claim 5, wherein:

the side welding mechanism (700) comprises a first side welding component (710) and a second side welding component (720) which are respectively positioned at two sides of the conveying direction of the discharging conveying mechanism (520), the first side welding component (710) and the second side welding component (720) are respectively used for forming a second welding belt (15) and a third welding belt (16) on the first film material (10), and the first side welding component (710) or the second side welding component (720) is provided with a vacuum pumping component (730) for pumping air between the first film material (10) and a product.

8. The package bag forming apparatus according to claim 1, wherein:

the frame (100) is provided with a pressing moving mechanism (800) above the transmission device (500), and the pressing moving mechanism (800) is used for driving the first upper film section (13) to be clung to the upper surface of a product and move towards the position of the side welding mechanism (700).

9. The package forming apparatus of claim 8, wherein:

the pushing-down moving mechanism (800) comprises two pushing-down lateral moving assemblies (810) which are respectively arranged on two sides of the conveying direction of the conveying device (500), the pushing-down lateral moving assemblies (810) comprise a lateral moving driver (811) arranged on the frame (100) and a lifting driver (812) connected with the lateral moving driver (811), and the output end of the lifting driver (812) is connected with a pushing-down flat plate (813).

10. The package bag forming apparatus according to claim 1, wherein:

still be equipped with second unreeling mechanism (900) on frame (100), second unreeling mechanism (900) are used for releasing buffer layer (20), buffer layer (20) keep away from the one end of second unreeling mechanism (900) connect in winding mechanism (300), buffer layer (20) be close to the part laminating of preforming mechanism (400) in the side of first membrane material (10), preforming mechanism (400) can support in buffer layer (20) so that buffer layer (20) buckle and form second lower parcel face (21), second side parcel face (22) and second upper parcel face (23) that connect gradually.