CN220973490U - Continuous tubular bag film bag making preforming mechanism and bag making device using same - Google Patents

Abstract

The utility model provides a continuous tubular bag film bag making preforming mechanism and a bag making device using the same, wherein the bag making preforming mechanism comprises a bracket, a film drawing component arranged on the bracket and a preforming component arranged on one side of the film drawing component for preforming a tubular rolled film; the one end entering of tube-shape rolled film through making preforming subassembly utilizes drawing membrane subassembly to pull, and the tube-shape rolled film preforming of laminating is the tube-shape structure that has certain space in the middle, and the follow-up heat-seal of being convenient for cooperates cuts the mechanism and forms open-top's wrapping bag, adopts individual wrapping bag and adopts the piece membrane to carry out the mode system bag inefficiency of side seal on-line system bag among the solution prior art.

Description

Continuous tubular bag film bag making preforming mechanism and bag making device using same

Technical Field

The utility model relates to the field of traditional Chinese medicine granule dispensing equipment, in particular to a continuous tubular bag film bag making preforming mechanism and a bag making device using the mechanism.

Background

The traditional Chinese medicine dispensing makes quantitative dispensing according to different formulas and medicinal materials, and the existing automatic dispensing equipment adopts a package of an independent package bag, and the processes of bag grabbing, bag opening, dispensing, sealing and the like are carried out, but the mode easily causes the problem of failure of bag opening, so that the subsequent dispensing work cannot be completed, and the normal operation of the dispensing work is affected.

Chinese patent CN214931199U discloses an automatic bag making device, which comprises an inner former, an outer former, a cut-off transverse sealing bag making mechanism and a medicine bag fixing mechanism which are sequentially arranged from bottom to top; the folding film can be vertically coated outside the inner shaper, a vertical sealing mechanism is arranged on the side part of the inner shaper, and the vertical sealing mechanism can seal the two side edges of the folding film to form a cylindrical film; the side edge of the outer shaper is provided with a film pulling mechanism, and the film pulling mechanism can clamp the side edge sealing of the cylindrical film and drive the cylindrical film to reciprocate in the vertical direction; the medicine bag fixing mechanism can fix the top of the cylindrical film; the cutting and transverse sealing bag making mechanism can carry out transverse sealing and cutting on the tubular film between the medicine bag fixing mechanism and the outer shaper, so that the tubular film in the medicine bag fixing mechanism forms a packaging bag. The automatic bag making device solves the defects that the bag making device in the prior art needs a special former, occupies large space and has a complex structure.

But this technical scheme adopts the vertical cladding of sheet membrane fifty percent discount in the outside of interior former, the lateral part of interior former is provided with erects and seals the mechanism, erects and seals the mechanism and can be right two sides of fifty percent discount membrane seal in order to form the tubular film, because erect and seal the mechanism and interior former cooperation carry out the side seal to the sheet membrane, produce unqualified wrapping bag and produce owing to the side seal inefficacy easily, influence follow-up traditional chinese medicine dispensing operation, and in addition side seal inefficiency leads to final production inefficiency.

Disclosure of utility model

The utility model aims at overcoming the defects of the prior art, and provides a continuous tubular bag film bag making preforming mechanism, which adopts a tubular rolled film to be matched with a preforming component to form a tubular structure with a certain space in the middle, is convenient to be matched with subsequent slitting and heat sealing to form a packaging bag with an open top, and solves the technical problem of low bag making efficiency in the prior art by adopting a mode of singly packaging the packaging bag and adopting a sheet film to carry out side sealing on-line bag making.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

The continuous tubular bag film bag making preforming mechanism is characterized by comprising a bracket, a film pulling assembly arranged on the bracket and a preforming assembly arranged on one side of the film pulling assembly for preforming a tubular rolled film; and one end of the cylindrical rolled film, which passes through the pre-forming assembly, enters the film pulling assembly to be pulled, so that the attached cylindrical rolled film is preformed into a cylindrical structure with a certain space in the middle.

As an improvement, the preform assembly comprises:

a bag making former; and

The former positioning components are uniformly distributed with a plurality of groups along the length direction of the bag making former;

The former positioning assembly rolls against the circumference of the bag making former and positions the bag making former.

As improvement, the lower end part of the bag making former is provided with a bulge for guiding the opening of the attached coiled film, and the outer contour of the bag making former is arranged in a polygonal shape.

As an improvement, a plurality of groups of inner positioning assemblies are arranged on the side face of the bag making former, and the inner positioning assemblies are in rolling contact connection with the former positioning assemblies.

As an improvement, the internal positioning component comprises two positioning rollers b which are rotatably arranged on the bag making former.

As an improvement, the former positioning assembly comprises a plurality of bag making sliding blocks symmetrically arranged along the circumferential direction of the bag making former, the bag making sliding blocks are slidably mounted on the support, positioning rollers a are arranged at the ends of the bag making sliding blocks, and the positioning rollers a are abutted to two positioning rollers b and limit the bag making former.

As an improvement, the preforming assembly further comprises a first adjusting assembly, wherein the first adjusting assembly for changing the distance between the bag making sliding block and the bag making former is arranged on the bracket, and the output end of the first adjusting assembly is connected with the bag making sliding block.

As an improvement, the film pulling assembly comprises: the film pulling driving units are symmetrically arranged on two sides of the bag making former and used for driving the film pulling wheels to rotate.

As an improvement, the film pulling assembly further comprises a second adjusting assembly, and the second adjusting assembly is arranged on the bracket and used for changing the interval between two groups of film pulling wheels; the film pulling wheel is rotatably mounted on the second adjusting assembly.

As an improvement, the second adjusting assembly comprises:

A guide rod;

The sliding block is arranged on the guide rod in a sliding way, and the film pulling wheel is rotationally arranged on the sliding block;

The adjusting piece is used for changing the position of the sliding block on the guide rod, is arranged on the bracket, and the output end of the adjusting piece is connected with the sliding block.

Another object of the present utility model is to provide a continuous tubular bag film bag making apparatus, which is capable of continuously making a single bottom sealed finished product package bag by a heat sealing and slitting mechanism after forming a tubular rolled surface into a tubular structure with a certain space in the middle by a preforming mechanism.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

The continuous tubular bag film bag making device is characterized by comprising the continuous tubular bag film bag making preforming mechanism and the heat sealing and cutting mechanism arranged above the preforming mechanism, wherein the preforming mechanism performs the attached tubular rolled film into a tubular structure with a certain space in the middle, and then the shape is kept and transmitted to the heat sealing and cutting mechanism to be sealed and cut into a single bottom sealed finished product packaging bag.

Preferably, an elastic opening component for automatically opening the cut barrel film is further arranged between the upper end of the preforming component and the heat sealing and cutting mechanism.

Preferably, the heat seal slitting mechanism comprises: the sealing device comprises a first mounting plate, a second mounting plate arranged above the first mounting plate, a sealing assembly arranged on the second mounting plate in a sliding manner, a slitting assembly arranged on one side of the sealing assembly and a sealing driving unit for driving the sealing assembly to act; the sealing driving unit comprises a moving plate and a driving part for driving the moving plate to reciprocate, and the sealing assembly is connected with the moving plate; the first mounting plate is connected with the bracket.

As an improvement, the closure assembly includes:

The first movable arm is arranged above the second mounting plate in a sliding manner, and one side of the first movable arm is provided with a heat sealing supporting block; the first movable arm is connected with the movable plate and moves synchronously with the movable plate;

the second movable arm is arranged above the second mounting plate in a sliding manner, and a heat sealing block is arranged on one side of the second movable arm opposite to the heat sealing supporting block; and

And the synchronous movement assembly is arranged on the second mounting plate and connected with the first moving arm and the second moving arm to enable the first moving arm and the second moving arm to synchronously and reversely move.

As an improvement, the heat sealing block is connected with the second movable arm through a heat insulation piece.

As an improvement, the synchronous motion assembly comprises: the first rack is connected with the first moving arm, the second rack is connected with the second moving arm, and the gear is rotationally arranged on the second mounting plate; the first rack and the second rack are respectively meshed with two sides of the gear, and the second moving arm is synchronously driven to reversely move by the movement of the first moving arm.

As an improvement, the lower ends of the first moving arm and the second moving arm are provided with bag pressing bulges for pressing the packaging bags.

As an improvement, the slitting assembly includes:

the tool rest is arranged below the first movable arm in a sliding manner;

The slitting knife is arranged on the knife rest; and

And the slitting driving unit drives the knife rest to reciprocate along the length direction of the first movable arm, and the slitting knife slits the packaging bag between the first movable arm and the second movable arm.

As an improvement, the second mounting plate is floatingly mounted on the first mounting plate.

As an improvement, the moving plate is provided with a track groove, and the track groove comprises a first horizontal section, an inclined section and a second horizontal section.

As improvement, the floating assembly is arranged on one side of the first mounting plate and is in butt joint with the bottom of the second mounting plate to change the position of the second mounting plate.

As an improvement, the floating assembly comprises:

A slider, the top end of which is connected with the bottom of the second mounting plate; and

The rolling piece is connected with the bottom of the floating block and is arranged in the track groove in a sliding manner;

When the movable plate moves, the floating blocks float up and down along with the track grooves and change the vertical position of the second mounting plate.

The utility model has the beneficial effects that:

(1) The utility model adopts the cylindrical rolling film to form a cylindrical structure with a certain space in the middle through the preforming component, is convenient for being matched with the heat sealing and cutting mechanism to form a packaging bag with an opening at the top, realizes continuous online bag making, improves the production efficiency, and simultaneously avoids the problem of low production efficiency caused by failure in bag opening when finished bags are adopted for dispensing traditional Chinese medicines in the prior art;

(2) According to the utility model, the bag making former with the guide bulge at the bottom is matched with the former positioning assembly, so that the former is always arranged in the cylindrical rolled film, and the position is kept unchanged, thereby realizing continuous forming in the cylindrical rolled film;

(3) The bag making former with the parallelogram structure realizes that the cylindrical rolled film is formed into a shape matched with the bag making former, thereby facilitating the adjustment of the subsequent process, reducing the bag opening process and improving the production efficiency;

(4) According to the utility model, the film pulling assembly pulls the side edge sealing of the cylindrical film roll, so that the forward conveying of the film roll is realized, and the automatic continuous cylindrical film roll preforming production and processing are completed;

(5) According to the utility model, through the arrangement of the adjusting piece, the distance between the film pulling wheels can be adjusted according to different film thickness, so that the optimal tension is ensured, and the package film is prevented from being damaged by pulling or cannot be transmitted due to insufficient tension;

(6) The synchronous motion assembly drives the first movable arm and the second movable arm to synchronously and reversely move, so that sealing of the packaging bag is realized, and meanwhile, in the sealing and clamping process, the sealed packaging bag is cut by the cutting assembly arranged below the first movable arm, so that sealing and cutting are integrally completed;

(7) According to the utility model, the rolling piece arranged in the track groove in a rolling way is matched with the reciprocating movement of the moving plate to drive the second mounting plate to float up and down, so that the packaging bag before sealing is smoothed, the packaging bag at the sealing position is ensured to be in a flat state, the sealing quality is improved, and the problem that the sealing is invalid due to the fact that the packaging bag is wrinkled is avoided.

In conclusion, the utility model has the advantages of high production efficiency, good preforming quality, convenience for subsequent bag making and the like.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic top view of the present utility model;

FIG. 3 is a schematic diagram of the installation structure of the positioning assembly in the present utility model;

FIG. 4 is a partial schematic view of the bottom structure of the bag-making and shaping apparatus of the present utility model;

FIG. 5 is a schematic view of a forming process of a cylindrical roll film according to the present utility model;

FIG. 6 is a schematic diagram of a third embodiment of the present utility model;

FIG. 7 is a schematic view of a heat seal slitting mechanism according to the utility model;

FIG. 8 is a second schematic view of the heat seal slitting mechanism of the present utility model;

FIG. 9 is a schematic front view of the heat seal slitting mechanism of the present utility model;

FIG. 10 is a schematic view of a slitting assembly according to the present utility model;

FIG. 11 is an enlarged partial schematic view of the portion I of FIG. 10 in accordance with the present utility model;

FIG. 12 is a schematic view of a floating assembly of the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Example 1

As shown in fig. 1-5, the present embodiment provides a continuous tubular bag film bag-making preforming mechanism, which includes a bracket 1, a film pulling assembly 2 disposed on the bracket 1, and a preforming assembly 3 disposed on one side of the film pulling assembly 2 for preforming a tubular rolled film 100, wherein the tubular rolled film 100 enters through one end of a bag-making former 31 and is pulled through the bag-making former 31 by the film pulling assembly 2, so that the laminated tubular rolled film 100 is preformed into a tubular structure with a certain space in the middle.

As an improvement, the preform assembly 3 comprises:

A bag-making former 31; and

The former positioning components 32, wherein the former positioning components 32 are uniformly distributed with a plurality of groups along the length direction of the bag making former 31;

The former positioning assembly 32 rolls against the circumference of the bag former 31 and positions the bag former 31.

As an improvement, the lower end of the bag making former 31 is provided with a protrusion 311 for guiding the opening of the attached rolled film, the outer contour of the bag making former 31 is in a polygonal shape, preferably a parallelogram shape, wherein one group of two opposite sides of the parallelogram shape are provided with arc guide angles, the other group of two opposite sides are in a sharp angle, and the two groups of film pulling wheels 21 are arranged outside the sharp angle.

As a modification, a plurality of groups of inner positioning assemblies 33 are arranged on the side surface of the bag making shaper 31, and the inner positioning assemblies 33 are connected with the shaper positioning assemblies 32 in a rolling contact manner.

Further, the inner positioning assembly 33 includes two positioning rollers b331 rotatably disposed on the bag-making former 31.

Preferably, the former positioning assembly 32 includes a plurality of bag making sliders 321 symmetrically and uniformly distributed along the circumferential direction of the bag making former 31, the bag making sliders 321 are slidably mounted on the support 1, positioning rollers a322 are disposed at the ends of the bag making sliders 321, and the positioning rollers a322 abut against two positioning rollers b331 to limit the bag making former 31.

It should be noted that, the triangular rolling transmission structure is formed between the positioning roller a322 and the two positioning rollers b331, so that the rolled film can pass through conveniently, and the position of the bag making former 31 is kept unchanged.

Preferably, the preforming assembly 3 further comprises a first adjusting assembly 34, the first adjusting assembly 34 for changing the interval between the bag-making slide 321 and the bag-making former 31 is mounted on the bracket 1, and the output end of the first adjusting assembly is connected with the bag-making slide 321.

The first adjusting assembly 34 includes a fixed block 341 and an adjusting bolt 342 rotatably mounted on the fixed block 341, and the adjusting bolt 342 is connected with the bag making slider 321.

By means of the first adjusting component 34, the distance between the bag making sliding block 321 and the former is adjusted quickly, the distance is kept stable, and the bag making former 31 is ensured to work stably.

Example two

As shown in fig. 1 to 5, wherein the same or corresponding parts as those in the first embodiment are denoted by the corresponding reference numerals as in the first embodiment, only the points of distinction from the first embodiment will be described below for the sake of brevity. The second embodiment is different from the first embodiment in that:

In this embodiment, the film pulling module 2 includes: the two groups of film pulling wheels 21 which are symmetrically arranged at two sides of the bag making former 31 and used for rolling and pulling the edge sealing of the cylindrical film roll 100, and a film pulling driving unit (not shown in the figure) which drives the film pulling wheels 21 to rotate, the film pulling driving unit is preferably driven by a motor, one group of the two groups of film pulling wheels 21 is a driving wheel, and the other group of film pulling wheels is a driven wheel; the driving wheel is connected with the output end of the film drawing driving unit.

Preferably, the film pulling assembly 2 further comprises a second adjusting assembly 22, and the second adjusting assembly 22 is mounted on the bracket 1 for changing the interval between the two groups of film pulling wheels 21; the film pulling wheel 21 is rotatably mounted on the second adjusting assembly 22.

Further, the second adjusting assembly 22 includes:

a guide bar 221;

The film pulling slide block 222 is arranged on the guide rod 221 in a sliding manner, and the film pulling wheel 21 is rotatably arranged on the film pulling slide block 222;

an adjusting member 223, the adjusting member 223 for changing the position of the slider on the guide bar 221 is mounted on the bracket 1, and an output end thereof is connected to the slider.

The adjusting member 223 is preferably an adjusting bolt; by rotating the adjusting piece 223, the position of the film pulling sliding block 222 is changed, the distance between the two groups of film pulling wheels 21 is changed, and the pulling force is changed by applying the pulling of the cylindrical film 100 with different thicknesses and adjusting the gap between the adjacent film pulling wheels 21.

Example III

As shown in fig. 6-12, this embodiment provides a continuous tubular bag film bag making device, which includes a continuous tubular bag film bag making preforming mechanism and a heat sealing and slitting mechanism 4 disposed above the preforming mechanism, wherein the preforming mechanism performs the laminated tubular rolled film 100 into a tubular structure with a certain space in the middle, and then keeps the shape, and transmits the tubular structure to the heat sealing and slitting mechanism 4 for heat sealing and slitting into finished product packaging bags with single bottom seals.

Preferably, an elastic opening assembly 5 for automatically opening the cut barrel film is arranged between the upper end of the preforming assembly 3 and the heat sealing and cutting mechanism 4;

Preferably, the elastic opening assembly comprises a set of supporting plates 51 symmetrically and rotatably arranged at the upper end of the bag making former 31, and the supporting plates are automatically reset to the vertical state through elastic members. When the barrel film is cut, the cutting positions are easy to adhere to each other to affect the subsequent dispensing, and the elastic opening assembly is arranged to realize automatic opening of the packaging bag under the action of a spring force, so that the finished bag after bag making is ensured to be in an opening state.

Preferably, as a simpler structure, the elastic opening component can select an elastic sheet, one end of the elastic sheet is connected with the bag making shaper 31, and the automatic opening of the cylindrical rolled film is realized through the elastic sheet.

As an improvement, the heat seal slitting mechanism 4 includes: the sealing device comprises a first mounting plate 41, a second mounting plate 42 arranged above the first mounting plate 41, a sealing assembly 43 arranged on the second mounting plate 42 in a sliding manner, a slitting assembly 44 arranged on one side of the sealing assembly 43 and a sealing driving unit 45 for driving the sealing assembly 43 to act; the seal driving unit 45 includes a moving plate 451, a driving portion 452 for driving the moving plate 451 to reciprocate, the seal assembly 43 is connected to the moving plate 451, and the first mounting plate 41 is mounted on the bracket 1.

Preferably, the driving portion 452 is preferably a driving motor, an output end of the driving motor is connected with a swing arm 453, a waist-shaped slot 4511 is provided at one end of the moving plate 451, one end of the swing arm 453 is slidably provided in the waist-shaped slot 4511, and the swing arm 453 is driven to rotate by the sealing driving unit 45 and drives the moving plate 451 to reciprocate.

Preferably, the seal assembly 43 includes:

A first moving arm 431 slidably disposed above the second mounting plate 42, and having a heat seal supporting block 432 disposed on one side thereof; the first moving arm 431 is connected to the moving plate 451 and moves synchronously with the moving plate 451;

A second moving arm 433 slidably disposed above the second mounting plate 42, and having a heat sealing block 434 disposed on a side opposite to the heat sealing support block 432; and

And a synchronous motion assembly 435, wherein the synchronous motion assembly 435 is mounted on the second mounting plate 42 and connected with the first moving arm 431 and the second moving arm 433 to make the first moving arm 431 and the second moving arm 433 move synchronously and reversely.

It should be noted that, the synchronous movement assembly 435 drives the first moving arm 431 and the second moving arm 433 to synchronously move inwards, so that the heat sealing block 434 contacts with the heat sealing supporting block 432, and heat sealing is performed on the packaging bag therebetween.

Preferably, the heat sealing block 434 is connected to the second moving arm 433 through a heat insulating member 436, so as to prevent the heat sealing block 434 from dissipating energy, ensure the constant temperature of the heat sealing member, and improve the sealing quality.

Further, the synchronous motion assembly 435 includes: a first rack 4351 connected to the first moving arm 431, a second rack 4352 connected to the second moving arm 433, and a gear 4353 rotatably provided to the second mounting plate 42; the first rack 4351 and the second rack 4352 are respectively engaged with two sides of the gear 4353, and the movement of the first moving arm 431 synchronously drives the second moving arm 433 to move reversely.

Further, the lower ends of the first moving arm 431 and the second moving arm 433 are provided with a bag pressing protrusion 437 for pressing the packaging bag.

Preferably, as shown in fig. 10, the slitting assembly 44 includes:

A tool rest 441, wherein the tool rest 441 is slidably disposed below the first moving arm 431;

A dividing knife 442, wherein the dividing knife 442 is mounted on the knife rest 441, and the dividing knife 442 is disposed between the bag pressing protrusion 437 and the heat seal supporting block 432; and

The slitting driving unit 443, the slitting driving unit 443 drives the blade carrier 441 to reciprocate along the length direction of the first moving arm 431, and the slitting blade 442 slits the packaging bag between the first moving arm 431 and the second moving arm 433.

It should be noted that, the slitting driving unit 443 may select linear driving modes such as linear motor driving, cylinder driving, rodless cylinder driving, etc. to meet the requirements of the present application, and the slitting driving unit 443 drives the blade carrier 441 to slide along the bottom of the first moving arm.

In addition, in the sealing process, when the heat sealing block 434 abuts against the heat sealing supporting block 432, the bag pressing protrusion 437 presses the packaging bag, and at this time, the slitting knife 442 slits the packaging bag in a vertically tensioned state, so that the slitting quality is improved.

The second mounting plate 42 is floatingly mounted on the first mounting plate 41.

Preferably, the second mounting plate 42 is arranged in a 47 shape, and the second mounting plate 42 is slidably arranged on the first mounting plate 41 through a slide block 421

As a modification, as shown in fig. 9, the moving plate 451 is provided with a track groove 4512, where the track groove 4512 includes a first horizontal segment 45121, an inclined segment 45122, and a second horizontal segment 45123.

It should be noted that, the first horizontal segment 45121 of the track groove 4512 is a heat-seal segment, the inclined segment 45122 is a smooth segment, and the second horizontal segment 45123 is a preparation segment; the rolling element 462 is located in the second horizontal segment 45123 in the starting state, the moving plate 451 is located at the leftmost side, when the packaging bag needs to be sealed, the moving plate 451 moves rightwards to enable the rolling element 462 to move along the inclined segment 45122, the moving speed of the rolling element 462 can be greater than that of the packaging bag, the packaging bag is smoothed upwards, when the rolling element moves to the first horizontal segment 45121, the heat sealing block 434 is in contact with the heat sealing supporting block 432 at the moment, heat sealing of the packaging bag is completed, and the packaging bag at the heat sealing position is smooth and free of wrinkles.

As a modification, a floating assembly 46 is mounted on one side of the first mounting plate 41 and is abutted against the bottom of the second mounting plate 42 to change the position of the second mounting plate 42.

Further, as shown in fig. 12, the floating assembly 46 includes:

A slider 461, the top end of the slider 461 being connected to the bottom of the second mounting plate 42; and

A rolling member 462, wherein the rolling member 462 is connected to the bottom of the slider 461, and the rolling member 462 is slidably disposed in the track slot 4512;

When the moving plate 451 moves, the slider 461 floats up and down along with the track groove 4512 and changes the vertical position of the second mounting plate 42.

Preferably, the rolling member 462 is preferably a bearing mounted to the slider 461 by a rotating shaft.

Working procedure

Step one, positioning and adjusting the bag making former, and synchronously rotating a plurality of adjusting bolts 342 in the circumferential direction of the bag making former 31 to enable a positioning roller a322 on a bag making sliding block 321 to abut against two positioning rollers b331;

Step two, penetrating the cylindrical rolled film 100 from the bottom of the bag former 31, enabling the cylindrical rolled film 100 to pass through the space between the positioning roller a322 and the positioning roller b331 and reach the space between the two groups of film pulling wheels 21, rotating the adjusting piece 223 to enable the two groups of film pulling wheels 21 to clamp the side edge sealing of the cylindrical rolled film 100,

And thirdly, starting the film pulling driving unit to drive the film pulling wheel to rotate, so as to realize the preforming production of the continuous cylindrical rolled film 100.

And step four, the preformed cylindrical film is transmitted to a heat sealing and slitting assembly, and the heat sealing and slitting are carried out to form a finished product packaging bag with a sealed bottom.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (10)

1. The continuous tubular bag film bag making preforming mechanism is characterized by comprising a bracket, a film pulling assembly arranged on the bracket and a preforming assembly arranged on one side of the film pulling assembly for preforming a tubular rolled film; and one end of the cylindrical rolled film, which passes through the pre-forming assembly, enters the film pulling assembly to be pulled, so that the attached cylindrical rolled film is preformed into a cylindrical structure with a certain space in the middle.

2. The continuous tubular bag film bag making preform mechanism of claim 1, wherein the preform assembly comprises:

a bag making former; and

The former positioning components are uniformly distributed with a plurality of groups along the length direction of the bag making former;

The former positioning assembly rolls against the circumference of the bag making former and positions the bag making former.

3. The continuous tubular bag film bag making preforming mechanism as claimed in claim 2, wherein a protrusion for opening guiding the attached rolled film is provided at a lower end portion of the bag making former, and an outer contour of the bag making former is arranged in a polygonal shape.

4. The continuous tubular bag film bag making preforming mechanism according to claim 2, wherein a plurality of groups of inner positioning assemblies are arranged on the side surface of the bag making former, and the inner positioning assemblies are in rolling contact connection with the former positioning assemblies; the internal positioning component comprises two positioning rollers b which are rotatably arranged on the bag making former.

5. The continuous tubular bag film bag making preforming mechanism as claimed in any one of claims 2-4, wherein the former positioning assembly comprises a plurality of bag making sliding blocks symmetrically arranged along the circumferential direction of the bag making former, the bag making sliding blocks are slidably mounted on the support, positioning rollers a are arranged at the end parts of the bag making sliding blocks, and the positioning rollers a are abutted against the two positioning rollers b to limit the bag making former.

6. The continuous tubular bag film bag making preforming mechanism of claim 5, wherein the preforming assembly further comprises a first adjusting assembly for changing the spacing between a bag making slide and a bag making former, the first adjusting assembly being mounted on the bracket with an output end thereof being connected to the bag making slide.

7. The continuous tubular bag-in-film bag-forming preforming mechanism of claim 6, wherein the film-pulling assembly comprises: two groups of film pulling wheels which are symmetrically arranged at two sides of the bag making former and used for rolling and pulling the edge sealing of the cylindrical rolled film, and film pulling driving units which are used for driving the film pulling wheels to rotate;

The film pulling assembly further comprises a second adjusting assembly, and the second adjusting assembly is arranged on the bracket and used for changing the interval between two groups of film pulling wheels; the film pulling wheel is rotatably mounted on the second adjusting assembly.

8. A continuous tubular bag film bag making device, which is characterized by comprising a continuous tubular bag film bag making preforming mechanism and a heat sealing and cutting mechanism arranged above the preforming mechanism, wherein the continuous tubular bag film bag making preforming mechanism performs a laminated tubular rolled film into a tubular structure with a certain space in the middle, and then the tubular structure is transmitted to the heat sealing and cutting mechanism to be heat sealed and cut into a finished product packaging bag with a single bottom seal.

9. The continuous tubular bag film bag making device according to claim 8, wherein an elastic opening assembly for automatically opening the cut tubular film is further arranged between the upper end of the preforming assembly and the heat sealing and cutting mechanism.

10. A continuous tubular bag film bagging apparatus as claimed in claim 9, wherein the heat seal slitting mechanism comprises: the sealing device comprises a first mounting plate, a second mounting plate arranged above the first mounting plate, a sealing assembly arranged on the second mounting plate in a sliding manner, a slitting assembly arranged on one side of the sealing assembly and a sealing driving unit for driving the sealing assembly to act; the sealing driving unit comprises a moving plate and a driving part for driving the moving plate to reciprocate, and the sealing assembly is connected with the moving plate.