CN215399616U - Continuous roll plastic bag packing machine - Google Patents

Abstract

The utility model discloses a continuous-rolling plastic bag packaging machine which comprises a rack, wherein a continuous-rolling plastic bag placing driving mechanism is arranged in the rack; the upper part of the rack is provided with a main conveying roller, an installation frame is arranged above the rack and movably connected with the rack, and a secondary conveying roller corresponding to the main conveying roller is installed on the installation frame; a heating element for sealing the plastic bag is arranged on the machine frame below the main conveying roller; the heating element is correspondingly provided with a push rod, the plastic bag passes through the space between the push rod and the heating element, and the push rod pushes the plastic bag to the heating element for heating and sealing; the push rod is arranged on the left guide rod and the right guide rod, the left guide rod and the right guide rod are arc-shaped, and the left guide rod and the right guide rod are driven by the guide rod power device; the packaging machine has high space utilization rate and small volume, and is suitable for different, especially smaller packaging environments; the material is discharged and the bag is convenient to wear, and the packaging efficiency is improved.

Description

Continuous roll plastic bag packing machine

Technical Field

The utility model relates to a continuous roll plastic bag packaging machine which is used for automatically and continuously packaging articles (such as express delivery articles and the like).

Background

With the rapid development of the logistics industry, the packaging machine has come to work in order to rapidly and efficiently package the articles, and the packaging machine realizes the automation of article packaging. For example, patent document No. CN204587428U discloses a continuous roll plastic bag packing machine, which includes a conveying device for conveying plastic bags and a sealing device, wherein the conveying device is composed of an upper conveying shaft and a lower conveying shaft, and a gap is left between the upper conveying shaft and the lower conveying shaft for the plastic bags to pass through; the sealing device is positioned at the downstream of the conveying direction of the conveying device, and after the conveying device conveys the plastic bag, the sealing device seals the plastic bag. The packaging machine can automatically and continuously package the articles, saves the manpower resource and realizes the automation of article packaging.

The currently used packaging machine can rapidly and efficiently package articles, and the automation of article packaging is realized. However, the packaging machine has large volume and low space utilization rate, and the continuous roll of plastic bags are very inconvenient to place, which affects the working efficiency.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide a continuous roll plastic bag packaging machine which is small in size and high in space utilization rate.

In order to solve the technical problem, the continuous-rolling plastic bag packaging machine comprises a rack, wherein a continuous-rolling plastic bag placing driving mechanism is arranged in the rack and used for placing continuous-rolling plastic bags and driving the continuous-rolling plastic bags to rotate and unreel; a main conveying roller is arranged above the continuous rolling plastic bag placing driving mechanism, and is driven by a main conveying roller power device; an installation frame is arranged above the rack and movably connected with the rack, and a secondary conveying roller corresponding to the primary conveying roller is installed on the installation frame; the mounting bracket is movably connected with the rack, so that the split type design is realized, the bag penetrating work is facilitated, and the continuous rolling plastic bag is convenient to put into the machine body. A heating element for sealing the plastic bag is arranged on the machine frame below the main conveying roller; the heating element is correspondingly provided with a push rod, the plastic bag passes through the space between the push rod and the heating element, and the push rod pushes the plastic bag to the heating element for heating and sealing; the push rod is installed on the left guide rod and the right guide rod, the left guide rod and the right guide rod are arc-shaped, a left walking channel for walking the left guide rod is formed in the left side of the rack, a right walking channel for walking the right guide rod is formed in the right side of the rack, and the left guide rod and the right guide rod are driven by the guide rod power device.

The continuous rolling plastic bag placing driving mechanism is used for placing the continuous rolling plastic bag and driving the continuous rolling plastic bag to rotate and unreel. Before the operation, the mounting bracket is lifted from the rack, the plastic bag is directly placed on the main conveying roller, then the mounting bracket is put down, the plastic bag is positioned between the auxiliary conveying roller and the main conveying roller at the moment, the plastic bag does not need to pass through the bag passing work between the auxiliary conveying roller and the main conveying roller, and a complex structure is not needed, so that the auxiliary conveying roller is separated from the main conveying roller to carry out the bag passing work. The main conveying roller and the auxiliary conveying roller rotate, the plastic bag is conveyed between the heating element and the push rod, and the article to be packaged is placed in the plastic bag with the single side opening. The left guide rod and the right guide rod respectively move along the left walking channel and the right walking channel, the left guide rod and the right guide rod drive the push rod to move towards the heating element, the conveyed plastic bag is pushed to the heating element, and the heating element works to realize heat sealing of the plastic bag. At this time, the plastic bag is clamped between the push rod and the heating element, and the main conveying roller and the auxiliary conveying roller are reversed, so that the single sealed plastic bag is separated from the continuous plastic bag (separated along the tearing line), and a packaging process is completed.

The continuous rolling plastic bag placing driving mechanism comprises a left track plate and a right track plate, wherein the left track plate and the right track plate are respectively arranged on the left side and the right side in the rack, and arc-shaped track grooves are formed in the left track plate and the right track plate; a placing shaft is arranged in the arc-shaped track grooves of the left track plate and the right track plate (namely, one end of the placing shaft is arranged in the arc-shaped track groove of the left track plate, and the other end of the placing shaft is arranged in the arc-shaped track groove of the right track plate); the continuous rolling machine is characterized in that a continuous rolling driving shaft is arranged in the rack and is driven to rotate by a continuous rolling power device, the continuous rolling driving shaft is parallel to the placing shaft, and the continuous rolling driving shaft drives the placing shaft to rotate to unreel a continuous rolling plastic bag on the placing shaft along the placing shaft. When the continuous rolling plastic bag is continuously unreeled and the thickness is continuously reduced, the placing shaft is placed in the arc-shaped rail groove and is continuously close to the continuous rolling driving shaft along the arc-shaped rail groove, so that the continuous rolling plastic bag is always in contact with the continuous rolling driving shaft, and the continuous rolling driving shaft rotates and can drive the continuous rolling plastic bag to be unreeled along the rotation of the placing shaft.

Preferably, the main conveying roller power device is a motor, but the main conveying roller power device is not limited to a motor as long as the driving can be realized by the components in the prior art.

In order to play a role of buffering, the heating element is arranged on a heating strip, and the heating strip is arranged on the frame through a spring element, so that the heating element is always in contact with the push rod, and sealing is facilitated. There is also an important role: when the main conveying roller and the auxiliary conveying roller reversely rotate to separate the plastic bags, if the single plastic bag is firmly connected with the continuous roll of plastic bags, the single plastic bag is not locked and burnt by the motor driving the main conveying roller due to the certain buffering distance formed by the installation of the spring elements, and the single plastic bag can be smoothly separated when the buffering distance rotates.

Specifically, the heating element is preferably a heating wire, but the heating element is not limited to a heating wire, such as a heating block or the like in the related art, as long as heat sealing can be achieved. Meanwhile, in order to enable the plastic bag to be tightly attached to the electric heating element and improve the heat sealing efficiency, the push rod is provided with a soft rubber strip (resistant to high temperature), and meanwhile, the soft rubber strip also has a certain buffering effect.

On the left side of the frame, the left walking channel comprises left guide wheels which are distributed up and down, at least two left guide wheels are distributed above the left walking channel, at least two left guide wheels are distributed below the left walking channel, and the left guide rod is positioned between the upper left guide wheel and the lower left guide wheel. Similarly, on the right side of the machine frame, the right walking channel comprises right guide wheels which are vertically distributed, at least two right guide wheels are vertically distributed above the right walking channel, at least two right guide wheels are vertically distributed below the right walking channel, and the right guide rod is located between the right guide wheels above the right walking channel and the right guide wheels below the right walking channel. Furthermore, in order to limit the walking of the left guide rod and the right guide rod, the wheel surface of the left guide wheel is provided with a left walking groove, the upper surface and the lower surface of the left guide rod are respectively provided with a left protruding part, and the left protruding part is positioned in the left walking groove. In a similar way, the wheel surface of the right guide wheel is provided with a right walking groove, the upper surface and the lower surface of the right guide rod are both provided with a right protruding part, and the right protruding part is positioned in the right walking groove. The left guide rod and the right guide rod respectively travel in a left traveling channel and a right traveling channel which are formed by the left guide wheel and the right guide wheel, so that the arrangement space of components is saved. Meanwhile, the left guide rod and the right guide rod are arc-shaped, and when the left guide rod and the right guide rod are positioned in the machine body, the space utilization rate is improved; because the left guide rod and the right guide rod are arc-shaped, when the left guide rod and the right guide rod extend out, the position of the push rod is lowered, and the interference on packaged articles is reduced.

In order to realize the action of the push rod, the guide rod power device is a guide rod motor, driving teeth are arranged on the left guide rod and the right guide rod, the driving teeth of the left guide rod and the right guide rod are respectively meshed with the left guide rod gear and the right guide rod gear, the guide rod motor drives the left guide rod gear and the right guide rod gear to rotate, and the left guide rod gear and the right guide rod gear drive the left guide rod and the right guide rod to stretch and retract through the driving teeth so as to realize the action of the push rod.

Preferably, one side of the mounting frame is movably connected with the rack through a hinge. At this time, in order to fix (lock) the mounting bracket to the frame, the other side of the mounting bracket is provided with a fixing member that fixes the mounting bracket to the frame. Under normal conditions, the mounting bracket is fixed with the frame to the mounting. When needed, the fixing piece can enable the mounting rack and the rack to be in a non-fixed state, so that the mounting rack can be lifted. Specifically, the fixing member includes at least one engaging plate, and if the engaging plate is two, two engaging plates are respectively disposed on the left and right sides of the mounting bracket. The clamping plate is provided with a sliding groove, a screw is arranged in the sliding groove, and the screw is arranged on the mounting frame; the end part of the clamping plate is provided with a clamping gap, a limiting rod is arranged in the clamping gap, and the limiting rod is arranged on the rack; the terminal block spring of installing of block board, the block spring is installed on the mounting bracket. When the limiting rod is arranged in the clamping notch, the mounting rack is fixed (locked) on the rack. When the clamping plate is pressed, the clamping plate slides along the screw in the sliding groove, so that the limiting rod is separated from the clamping notch, and the mounting frame can move on the rack (such as being lifted along the hinge), namely, is in a non-fixed state. After the dynamics of pressing the block board disappeared, under the effect of block spring (like extension spring or compression spring), the screw along the sliding tray of block board resets, and the gag lever post is located the block breach, and the mounting bracket is fixed (is pinned) in the frame.

In order to realize that the slave conveying roller is tightly attached to the master conveying roller, one end of the slave conveying roller is installed on the head end of the left bracket, the other end of the slave conveying roller is installed on the head end of the right bracket, the middle parts of the left bracket and the right bracket (the middle parts do not need to be completely in the center position, and the center position can be also in the center position) are rotatably installed on the installation frame, and the tail ends of the left bracket and the right bracket are respectively connected with the installation frame through bracket springs. When the mounting bracket moves downwards, the contact of the conveying roller and the main conveying roller is followed, the left bracket and the right bracket rotate along the middle part, and the tail ends of the left bracket and the right bracket are under the action of the bracket spring, so that the left bracket and the right bracket are kept tightly attached to the main conveying roller along the middle part as a central fulcrum. Simultaneously, also realize adjusting from the dynamics between conveying roller and the main conveying roller.

In order to facilitate the opening of the plastic bag, an air blowing device is arranged on the mounting rack above the conveying rollers, and air flow released by the air blowing device blows towards the bag opening of the plastic bag to be sealed. Preferably, the blowing device is a cross flow fan, an air deflector is arranged in front of the cross flow fan, and the air deflector guides the airflow of the cross flow fan to the bag mouth of the plastic bag to be sealed. The blowing device enlarges the opening (bag mouth) and is convenient for placing packaged articles.

When in heat sealing, in order to seal the opening neatly and reduce or avoid the generation of wrinkles, opening devices are symmetrically arranged on the machine frame below the main conveying roller. Preferably, prop a mouthful device including propping a mouthful frame, prop and install main belt pulley, follow the belt pulley on the frame of mouthful, main belt pulley, follow and be connected with the belt between the belt pulley, main belt pulley is through propping mouthful motor drive, install L shape vaulting pole on the follow belt pulley. In order to adjust the position of the opening expanding device symmetrically arranged according to the size of the plastic bag, an opening expanding plate is installed on the machine frame, a moving groove is formed in the opening expanding plate, and the opening expanding device is installed in the moving groove through screws.

In order to label the plastic bag before packaging and facilitate subsequent identification, a labeling device is mounted on the mounting frame. As a mode, the labeling device is movably arranged on the mounting frame; the labeling device comprises a main label conveying roller, a secondary label conveying roller is arranged on the mounting frame, the main label conveying roller and the secondary label conveying roller are located above the main conveying roller, and the main label conveying roller and the secondary label conveying roller are used for conveying labels. By the structural mode, the maximization of space layout utilization is realized. The labeling device is lifted from the mounting frame, the label paper on the label paper roll is directly placed on the main label conveying roller, then the labeling device is put down, the label paper is located between the main label conveying roller and the label slave conveying roller at the moment, the label paper does not need to pass through the main label conveying roller and the label slave conveying roller, a complex structure is not needed, and the main label conveying roller and the label slave conveying roller are separated to carry out label passing work.

Specifically, through a plurality of connecting rod swing joint between labeling device and the mounting bracket, further, be provided with the expansion torsional spring between connecting rod and the mounting bracket, the expansion torsional spring makes labeling device move along the connecting rod. And a locking device is arranged between the labeling device and the mounting frame, and the locking device enables the labeling device to be locked on the mounting frame. When the label is not locked, the labeling device can move on the mounting rack through a plurality of connecting rods, and the label paper can be placed between the label main conveying roller and the label auxiliary conveying roller; when the locking state is realized, the labeling device is fixed on the mounting frame and is in a labeling state.

Preferably, the locking device comprises a rotating rod which is rotatably mounted on the labeling device, the tail end of the rotating rod is provided with a locking groove, a locking rod is arranged on the mounting rack and is positioned in the locking groove, and the locking rod is separated from the locking groove when the rotating rod rotates; be provided with rotatory reset spring on the rotary rod, rotatory reset spring one end is fixed on the rotary rod, rotatory reset spring's the other end is fixed on labelling device. In order to facilitate the locking rod to enter the locking groove when the rotating rod moves downwards, the end face of the tail end of the rotating rod is in an inclined plane shape. When the locking lever was located locking inslot, the unable upward motion of rotary rod, locking between labeling device and the mounting bracket. When the rotating rod rotates, the locking rod is separated from the locking groove and is positioned on the surface of the rotating rod, and the rotating rod has no blocking force, so that the labeling device can be separated from the mounting rack (such as moving along the connecting rod). Under the effect of rotatory reset spring, the rotatory reconversion of rotary rod, the device of labelling downstream, rotary rod downstream, the locking lever gets into locking inslot along the rotary rod surface, realizes the locking once more. In particular, the locking lever may be one end of a spring.

The packaging object of the packaging machine is a single-side opening continuous-rolling plastic bag, the single-side opening continuous-rolling plastic bag comprises a plurality of continuous-rolling plastic bags, each plastic bag is provided with a bag opening at the front end and a bag bottom edge at the rear end, the bag opening of the previous plastic bag is connected with the bag bottom edge of the next plastic bag, and specifically, the back surface of the previous plastic bag is connected with the back surface of the next plastic bag through a cutting mark (such as a tearing line formed by a pin hole).

The label paper is also arranged in a roll, and labels arranged at intervals are adhered to the label base paper.

The packaging machine has high space utilization rate and small volume, and is suitable for different, especially smaller packaging environments; the material is discharged and the bag is convenient to wear, and the packaging efficiency is improved.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a perspective view of the frame.

Fig. 3 is a schematic view of a frame structure.

Fig. 4 is a left side view of the gantry.

Fig. 5 is a perspective view of the mounting bracket.

FIG. 6 is a schematic view of a mount engaging plate.

Fig. 7 is a schematic view of a rack heating bar.

Fig. 8 is a schematic view of the push rod of the frame.

Fig. 9 is a schematic view at the left guide bar.

Figure 10 is a schematic view of the flaring device.

FIG. 11 is a schematic view of a spreader device.

Fig. 12 is a schematic view of the upper portion of the mounting bracket.

Fig. 13 is a perspective view of the labeling device.

Fig. 14 is a rear view of the labeling device (rotary bar).

Fig. 15 is a schematic view of the end of a rotating rod.

Detailed Description

As shown in fig. 1-15, the continuous rolling plastic bag packaging machine comprises a frame 1, wherein a continuous rolling plastic bag placing driving mechanism is arranged in the frame 1, and the continuous rolling plastic bag placing driving mechanism is used for placing a continuous rolling plastic bag and driving the continuous rolling plastic bag to rotate and unreel. As a specific embodiment, as shown in fig. 2, the continuous rolling plastic bag placing driving mechanism includes a left rail plate and a right rail plate 3, the left rail plate and the right rail plate 3 are respectively installed at the left side and the right side in the machine frame, and the left rail plate and the right rail plate 3 are both provided with an arc-shaped rail groove 4; a placing shaft 5 is arranged in the arc-shaped track grooves 4 of the left track plate and the right track plate 3, namely one end of the placing shaft 5 is arranged in the arc-shaped track groove 4 of the left track plate, and the other end of the placing shaft 5 is arranged in the arc-shaped track groove 4 of the right track plate 3; the continuous-rolling type plastic bag unwinding machine is characterized in that a continuous-rolling driving shaft 6 is arranged in the machine frame 1, the continuous-rolling driving shaft 6 is driven to rotate through a continuous-rolling power device, the continuous-rolling driving shaft 6 is parallel to the placing shaft 5, and the continuous-rolling driving shaft 6 drives the continuous-rolling plastic bag on the placing shaft 5 to rotate along the placing shaft 5 for unwinding. When the continuous rolling plastic bag on the placing shaft 5 is continuously unreeled and the thickness is continuously reduced, the placing shaft 5 is placed in the arc-shaped track groove 4, the placing shaft 5 is continuously close to the continuous rolling driving shaft 6 along the arc-shaped track groove 4, so that the continuous rolling plastic bag is always contacted with the continuous rolling driving shaft 6, and the continuous rolling driving shaft 6 rotates to always drive the continuous rolling plastic bag to unreel along the rotation of the placing shaft 5.

Above the continuous roll plastic bag placing and driving mechanism, a main conveying roller 8 (as shown in fig. 7) is arranged at the upper part of the frame 1, and the main conveying roller 8 is driven by a main conveying roller power device. The main conveyor roller power device is preferably a motor, but the main conveyor roller power device is not limited to a motor as long as the prior art components capable of driving are available. Further, as shown in fig. 3, a continuous roll driving wheel 11 is provided at an end of the continuous roll driving shaft 6, a main conveyor roller driving wheel 10 is provided at an end of the main conveyor roller 8, the continuous roll driving wheel 11, the main conveyor roller driving wheel 10 and a motor driving wheel 12 are connected together by a driving belt 13, and the motor driving wheel 12 drives the continuous roll driving wheel 11 and the main conveyor roller driving wheel 10.

As shown in fig. 1, a mounting frame 2 is provided above the frame 1, the mounting frame 2 is movably connected with the frame 1, and preferably, one side of the mounting frame 2 is movably connected with the frame 1 through a hinge 7 (shown in fig. 7). At this time, in order to fix (lock) the mounting bracket 2 on the frame 1, the other side of the mounting bracket 2 is provided with a fixing member that fixes the mounting bracket 2 and the frame 1. Under normal conditions, the mounting bracket 2 is fixed with the frame 1 by the fixing piece. When necessary, the fixing member can make the mounting frame 2 and the frame 1 in a non-fixed state, so that the mounting frame 2 can be lifted. Specifically, as shown in fig. 6, the fixing member includes at least one engaging plate 29, and if there are two engaging plates 29, the two engaging plates 29 are respectively disposed on the left and right sides of the mounting bracket 2. The engaging plate 29 has (two) sliding grooves 31, the sliding grooves 31 have screws 32 therein, and the screws 32 are mounted on the mounting bracket 2; the end of the clamping plate 29 is provided with a clamping notch 30, a limiting rod 69 (shown in fig. 3) is arranged in the clamping notch 30, and the limiting rod 69 is mounted on the frame 1; the end of the engaging plate 29 is provided with an engaging spring, which may be an extension spring or a compression spring, and the engaging spring is mounted on the mounting bracket 2. When the limit rod 69 is placed in the engaging notch 30, the mounting bracket 2 is fixed (locked) to the frame 1. When the engaging plate 29 is pressed, the engaging plate 29 slides along the screw 32 in the sliding groove 31, so that the stopper 69 is disengaged from the engaging notch 30, and the mounting bracket 2 can move (e.g., lift up along the hinge 9) on the frame 1, i.e., is in an unfixed state. After the force for pressing the engaging plate 29 disappears, under the action of the engaging spring (such as an extension spring or a compression spring), the engaging plate 29 is restored along the screw 32 in the sliding groove 31, the limiting rod 69 is located in the engaging notch 30, and the mounting frame 2 is fixed (locked) on the rack 1.

And the mounting frame 2 is provided with a slave conveying roller 15 corresponding to the master conveying roller 8, and the master conveying roller 8 and the slave conveying roller 15 are matched for conveying plastic bags. In order to realize the close contact between the slave conveyor roller 15 and the master conveyor roller 8, as shown in fig. 5, one end of the slave conveyor roller 15 is mounted on the head end of a left bracket 16, the other end thereof is mounted on the head end of a right bracket 19, the middle parts (the middle parts do not need to be completely central, and certainly the central positions can also be) of the left bracket 16 and the right bracket 19 are rotatably mounted on the mounting frame 2 through rotating shafts 17 and 20, the tail ends of the left bracket 16 and the right bracket 19 are respectively connected with the mounting frame 2 through bracket springs 18 and 21, so that the left bracket 16 and the right bracket 19 form a seesaw type structure with the middle parts as pivots (the rotating shafts 17 and 20). When the mounting frame 2 moves downward, the slave conveying roller 15 contacts the master conveying roller 8, the left bracket 16 and the right bracket 19 rotate along the middle part, and the tail ends of the left bracket 16 and the right bracket 19 are kept close to the master conveying roller 8 by taking the middle parts of the left bracket 16 and the right bracket 19 as central fulcrums under the action of bracket springs 18 and 21 (stretched and deformed).

Below the main conveyor roller 8, the frame 1 is provided with a heating element for sealing the plastic bag, and particularly, the heating element is preferably a heating wire, but the heating element is not limited to a heating wire, such as a heating block, as long as heat sealing can be achieved.

As shown in fig. 8, the heating element corresponds to a push rod 35, the plastic bag passes through between the push rod 35 and the heating element, and the push rod 35 pushes the plastic bag to the heating element for heating and sealing. Meanwhile, in order to make the plastic bag tightly attached to the electric heating element and improve the heat sealing efficiency, the push rod 35 is provided with a soft rubber strip 36 (resistant to high temperature), and meanwhile, the soft rubber strip 36 also has a certain buffering effect.

In order to provide a cushioning effect, as shown in fig. 7, the heating element is mounted on a heating strip 33, and the heating strip 33 is mounted on the frame 1 by a spring element, such as a spring 34, so that the heating element is always in contact with the push rod, which is beneficial for sealing. For example, the heating strip 33 is movably mounted on the frame 1 by a screw, a spring 34 is sleeved on the screw, and the spring 34 supports the heating strip 33 and enables the heating strip 33 to float. This structure also plays an important role: when the main conveying roller 8 and the auxiliary conveying roller 15 reversely rotate to separate plastic bags, if the single plastic bag is firmly connected with the continuous rolling plastic bag, the single plastic bag is not locked and burnt by the motor driving the main conveying roller 8 due to the certain buffering distance formed by the installation of the spring elements, and the single plastic bag can be smoothly separated when the buffering distance rotates.

As shown in fig. 8, the push rod 35 is installed on a left guide rod 37 and a right guide rod 42, the left guide rod 37 and the right guide rod 42 are arc-shaped, the left side of the rack 1 is provided with a left traveling passage through which the left guide rod 37 travels, the right side of the rack 1 is provided with a right traveling passage through which the right guide rod 42 travels, and the left guide rod 37 and the right guide rod 42 are driven by a guide rod power device.

Specifically, on the left side of the frame 1, the left travel path includes 4 (not limited to 4) left guide wheels 38, 39, 40, 41 distributed up and down, at least two left guide wheels 38, 39 distributed above, and at least two left guide wheels 40, 41 distributed below, and the left guide rod 37 is located between the upper left guide wheels 38, 39 and the lower left guide wheels 40, 41. Similarly, on the right side of the frame 1, the right walking channel comprises right guide wheels distributed up and down, at least two right guide wheels are distributed above the right walking channel, at least two right guide wheels are distributed below the right walking channel, and the right guide rod 42 is positioned between the right guide wheels above the right walking channel and the right guide wheels below the right walking channel. The left guide rod 37 and the right guide rod 42 respectively travel in a left traveling channel and a right traveling channel formed by the left guide wheel and the right guide wheel, so that the arrangement space of components is saved. Meanwhile, the left guide rod 37 and the right guide rod 42 are arc-shaped, and when the left guide rod 37 and the right guide rod 42 are positioned in the machine body 1, the space utilization rate is improved; since the left guide bar 37 and the right guide bar 42 are arc-shaped, when the left guide bar and the right guide bar are extended, the position of the push rod 35 is lowered, and the interference to the packaged articles is reduced.

Further, in order to limit and guide the traveling of the left guide rod 37 and the right guide rod 42, as shown in fig. 9, the wheel surfaces of the left guide wheels 38, 39, 40, 41 have left traveling grooves 43, the upper surface and the lower surface of the left guide rod 37 each have a left protruding portion 44, and the left protruding portions 44 are located in the left traveling grooves 43, 45. In a similar way, the wheel surface of the right guide wheel is provided with a right walking groove, the upper surface and the lower surface of the right guide rod are both provided with a right protruding part, and the right protruding part is positioned in the right walking groove.

In order to realize the action of the push rod 35, the guide rod power device is a guide rod motor (arranged inside the frame 1), as shown in fig. 9, the left guide rod 37 and the right guide rod 42 are both provided with driving teeth 46, the driving teeth 46 of the left guide rod 37 and the right guide rod 42 are respectively meshed with the left guide rod gear and the right guide rod gear, the guide rod motor drives the left guide rod gear and the right guide rod gear to rotate, and the left guide rod gear and the right guide rod gear drive the left guide rod 37 and the right guide rod 42 to extend and retract through the driving teeth, so as to drive the push rod to act. Specifically, in order to realize synchronous driving, the left guide rod gear and the right guide rod gear are connected together through a synchronous shaft, and the left guide rod gear or the right guide rod gear is driven through a motor, so that synchronous driving is realized. For the reasonable utilization of space, the left guide rod gear and the right guide rod gear are respectively connected with a driving gear 14, the two driving gears 14 are connected together through a synchronous shaft, and one or two driving gears 14 are driven through a motor, so that the synchronous driving is realized.

In order to facilitate the opening of the plastic bag, as shown in fig. 5, an air blowing device is arranged on the mounting frame 2 above the conveying rollers 15, and the air flow released by the air blowing device is blown to the mouth of the plastic bag to be sealed. In one embodiment, the air blowing device is a cross flow fan 27, and an air deflector 28 is arranged in front of the cross flow fan 27, and the air deflector 28 guides the air flow of the cross flow fan 27 to the mouth of the plastic bag to be sealed. The blowing device enlarges the opening (bag mouth) and is convenient for placing packaged articles.

In order to reduce or prevent the occurrence of wrinkles by sealing the seal neatly, as shown in fig. 10, the frame 1 has a symmetrical slit device 47 below the main feed roller 8. As an embodiment, as shown in fig. 11, the mouth-opening device 47 includes a mouth-opening frame 50, a primary pulley 51 and a secondary pulley 52 are mounted on the mouth-opening frame 50, a belt 53 is connected between the primary pulley 51 and the secondary pulley 52, the primary pulley 52 is driven by a mouth-opening motor 54, and an L-shaped stay bar 56 is mounted on the secondary pulley 52. In order to adjust the position of the opening devices 47 symmetrically arranged according to the size of the plastic bag, as shown in fig. 10 and 11, an opening plate 48 is installed on the machine frame 1, a moving groove 49 is formed in the opening plate 48, the opening devices 47 are installed in the moving groove 49 through screws 55, the screws 55 are loosened during moving, and the screws 55 are tightened during working.

In order to label the plastic bags before packaging, for subsequent identification and the like, as shown in fig. 1 and 13, a labeling device 57 is mounted on the mounting frame 2. In one embodiment, the labeling device 57 is a conventional labeling device that feeds a label from a main label feed roller 60 and a sub-label feed roller 62 (shown in fig. 12). The labeling device is movably mounted on the mounting frame 2, the labeling device 57 comprises a main label conveying roller 60, a secondary label conveying roller 62 (shown in fig. 12) is arranged on the mounting frame 2, the main label conveying roller 60 and the secondary label conveying roller 62 are positioned above the main conveying roller 8, and the main label conveying roller 60 and the secondary label conveying roller 62 are used for conveying labels. By the structural mode, the maximization of space layout utilization is realized. The labeling device 57 is lifted from the mounting frame 2, the label paper on the label paper roll is directly placed on the main label conveying roller 60, then the labeling device 57 is put down, the label paper is located between the main label conveying roller 60 and the auxiliary label conveying roller 62 at the moment, the operation that the label paper passes through the main label conveying roller 60 and the auxiliary label conveying roller 62 is not needed, a complex structure is not needed, and the main label conveying roller 60 and the auxiliary label conveying roller 62 are separated to carry out the label passing operation. In one embodiment, the labeling device 57 is movably connected to the mounting frame 2 by 4 links 22, 23, 24, 25, and the labeling device 57 can move on the mounting frame 2 along the links 22, 23, 24, 25. Further, an unfolding torsion spring 26 is arranged between the connecting rods 22, 23, 24, 25 and the mounting frame 2, and under the action of the elastic force of the unfolding torsion spring 26, the connecting rods 22, 23, 24, 25 are driven to move, and at the moment, the labeling device 57 moves along with the connecting rods 22, 23, 24, 25.

Specifically, the labeling device 57 includes a label paper box 58 and a winding shaft 59, the label paper box 58 and the winding shaft 59 are mounted on a mounting plate, and the label main conveying roller 60 and the winding shaft 59 can be driven by a belt and a driving wheel and by a motor. The 4 links 22, 23, 24, 25 are mounted at one end to the bottom of the label paper box 58 and at the other end to the mounting frame 2. A main label feed roller 60 (a sub-label feed roller 62 is mounted on the mounting frame 2), a guide shaft 70, and a peeling bar 61 are also mounted on the mounting plate, and the peeling bar 61 has a semi-cylindrical structure. The continuous roll of label paper is placed in the label paper box 58, the label paper enters between the main label conveying roller 60 and the auxiliary label conveying roller 62 through the guide shaft 70, and is unreeled under the driving of the main label conveying roller 60 and the auxiliary label conveying roller 62. The main label feed roller 60 and the label sheet fed from the label feed roller 62 pass through the half-cylindrical structure of the peeling bar 61. After the label paper passes through the semi-cylindrical structure, the large angle is folded to (change direction promptly) rolling shaft 59 and is rolled up, and the base stock of label paper is collected by rolling shaft 59 this moment, and the label on the base stock bonds on the base stock, because the large angle is folded to behind the semi-cylindrical structure label paper direction of delivery, the adhesion between label and the base stock diminishes, and the label breaks away from the base stock, and the whereabouts is pasted on the plastic bag of carrying.

Between the labeling device 57 and the mounting frame 2, a locking device is provided, which locks the labeling device 57 on the mounting frame 2. In the unlocked state, the labeling device 57 is movable on the mounting frame 2 by a plurality of links, and the label paper 57 can be placed between the label main feed roller 60 and the label sub feed roller 62; in the locked state, the labeling device 57 is fixed to the mounting frame 2 in the labeling position.

As an embodiment, as shown in fig. 14 and 15, the locking device includes a rotating rod 63, the rotating rod 63 is rotatably mounted on the labeling device 57, the tail end of the rotating rod 63 has a locking groove 65, a locking rod 66 is arranged on the mounting rack 2 and is located in the locking groove 65, and the locking rod 63 is disengaged from the locking groove 65 when the rotating rod 63 rotates; a rotary return spring 64 is arranged on the rotary rod 63, one end of the rotary return spring 64 is fixed on the rotary rod 63, and the other end of the rotary return spring 64 is fixed on the labeling device 57. In order to facilitate the locking bar 66 to enter the locking groove 65 when the rotating rod 63 moves downwards, the end surface of the tail end of the rotating rod 63 is beveled. When the locking lever 66 is located in the locking slot 65, the rotating rod 63 cannot move upwards, and the labelling device 57 is locked to the mounting frame 2. When the rotating rod 63 is rotated, the locking rod 66 is disengaged from the locking slot 65 and positioned on the surface of the rotating rod 63, and the rotating rod 63 has no blocking force, so that the labeling device 57 can be disengaged from the mounting frame 2 (e.g., moved along the connecting rod). Under the action of the rotary return spring 64, the rotary rod 63 is rotated to restore the original state, the labeling device 57 moves downwards, the rotary rod 63 moves downwards, and the locking rod 66 enters the locking groove 65 along the surface of the rotary rod 63 to realize locking again. Specifically, the locking lever 66 may be one end of a spring 67. When the rotating rod 63 moves downwards, in order to facilitate the locking rod 66 to enter the locking groove 65, a stop piece 68 is arranged at the edge of the locking rod 66, a notch is formed in the stop piece 68, and the locking rod 66 is limited to act in the notch.

When the continuous rolling plastic bag unwinding device works, the continuous rolling plastic bag is placed on the continuous rolling plastic bag placing driving mechanism, and meanwhile, the continuous rolling plastic bag is driven to rotate and unwind. Before the work, lift mounting bracket 2 from frame 1, the plastic bag is directly placed on main conveying roller 8, then put down mounting bracket 2 again, and the plastic bag just is in between conveying roller 15 and main conveying roller 8 from this moment, need not to wear the bag work with the plastic bag from passing between conveying roller 15 and main conveying roller 8, also need not complicated structure, makes and breaks away from conveying roller 15 and main conveying roller 8 and wears the bag work again. The main conveyor roller 8, driven by the conveyor roller 15, transports the plastic bag between the heating element and the pusher 35, the article to be packaged being placed in the single-sided open plastic bag. The left guide rod 37 and the right guide rod 42 respectively move along the left walking channel and the right walking channel, the left guide rod 37 and the right guide rod 42 drive the push rod 35 to move towards the heating element, the conveyed plastic bag is pushed to the heating element, and the heating element works to realize heat sealing of the plastic bag. At this time, the plastic bag is clamped between the push rod 35 and the heating element, and the main conveying roller 8 and the auxiliary conveying roller 15 are reversed, so that the single sealed plastic bag is separated from the continuous plastic bag (separated along the tearing line), and a packaging process is completed.

The above embodiments do not limit the present invention in any way, and all technical solutions obtained by means of equivalent substitution or equivalent transformation fall within the protection scope of the present invention.

Claims (26)

1. Continuous roll plastic bag packagine machine, including the frame, its characterized in that: the continuous rolling plastic bag placing driving mechanism is arranged in the rack and used for placing continuous rolling plastic bags and driving the continuous rolling plastic bags to rotate and unreel;

a main conveying roller is arranged above the continuous rolling plastic bag placing driving mechanism, and is driven by a main conveying roller power device;

an installation frame is arranged above the rack and movably connected with the rack, and a secondary conveying roller corresponding to the primary conveying roller is installed on the installation frame;

a heating element for sealing the plastic bag is arranged on the machine frame below the main conveying roller;

the heating element is correspondingly provided with a push rod, the plastic bag passes through the space between the push rod and the heating element, and the push rod pushes the plastic bag to the heating element for heating and sealing.

2. The continuous roll plastic bag packaging machine of claim 1, wherein: the continuous rolling plastic bag placing driving mechanism comprises a left track plate and a right track plate, the left track plate and the right track plate are respectively arranged on the left side and the right side in the rack, and arc-shaped track grooves are formed in the left track plate and the right track plate; the arc-shaped track grooves of the left track plate and the right track plate are internally provided with a placing shaft; the continuous rolling machine is characterized in that a continuous rolling driving shaft is arranged in the rack and is driven to rotate by a continuous rolling power device, the continuous rolling driving shaft is parallel to the placing shaft, and the continuous rolling driving shaft drives the placing shaft to rotate to unreel a continuous rolling plastic bag on the placing shaft along the placing shaft.

3. The continuous roll plastic bag packaging machine of claim 1, wherein: the main conveying roller power device is a motor.

4. The continuous roll plastic bag packaging machine of claim 1, wherein: the heating element is mounted on a heating strip, and the heating strip is mounted on the frame through a spring element.

5. The continuous roll plastic bag packaging machine of claim 1, wherein: the heating element is an electric heating wire.

6. The continuous roll plastic bag packaging machine of claim 1, wherein: the push rod is provided with a soft rubber strip.

7. The continuous roll plastic bag packaging machine of claim 1, wherein: the push rod is installed on the left guide rod and the right guide rod, the left guide rod and the right guide rod are arc-shaped, a left walking channel for walking the left guide rod is formed in the left side of the rack, a right walking channel for walking the right guide rod is formed in the right side of the rack, and the left guide rod and the right guide rod are driven by the guide rod power device.

8. The continuous roll plastic bag packaging machine of claim 7, wherein: the left walking channel comprises left guide wheels which are distributed up and down, at least two left guide wheels are distributed above the left walking channel, at least two left guide wheels are distributed below the left walking channel, and the left guide rod is positioned between the upper left guide wheel and the lower left guide wheel; the right walking channel comprises right guide wheels which are vertically distributed, at least two right guide wheels are distributed above the right walking channel, at least two right guide wheels are distributed below the right walking channel, and the right guide rod is positioned between the upper right guide wheel and the lower right guide wheel.

9. The continuous roll plastic bag packaging machine of claim 8, wherein: the wheel surface of the left guide wheel is provided with a left walking groove, the upper surface and the lower surface of the left guide rod are provided with left convex parts, and the left convex parts are positioned in the left walking groove; the wheel face of the right guide wheel is provided with a right walking groove, the upper surface and the lower surface of the right guide rod are provided with right protruding parts, and the right protruding parts are positioned in the right walking groove.

10. The continuous roll plastic bag packaging machine of claim 7, wherein: the guide rod power device is a guide rod motor, driving teeth are arranged on the left guide rod and the right guide rod, the driving teeth of the left guide rod and the right guide rod are respectively meshed with the left guide rod gear and the right guide rod gear, and the guide rod motor drives the left guide rod gear and the right guide rod gear to rotate.

11. The continuous roll plastic bag packaging machine of claim 1, wherein: one side of the mounting rack is movably connected with the rack through a hinge.

12. The continuous roll plastic bag packaging machine of claim 11, wherein: and a fixing piece is arranged on the other side of the mounting rack and fixes the mounting rack and the rack.

13. The continuous roll plastic bag packaging machine of claim 12, wherein: the fixing piece comprises at least one clamping plate, a sliding groove is formed in the clamping plate, a screw is arranged in the sliding groove, and the screw is installed on the installation frame; the end part of the clamping plate is provided with a clamping gap, a limiting rod is arranged in the clamping gap, and the limiting rod is arranged on the rack; the terminal block spring of installing of block board, the block spring is installed on the mounting bracket.

14. The continuous roll plastic bag packaging machine of claim 13, wherein: the number of the clamping plates is two, and the two clamping plates are respectively arranged on the left side and the right side of the mounting frame.

15. The continuous roll plastic bag packaging machine of claim 1, wherein: install on left bracket head from the one end of conveying roller, its other end is installed on right bracket head, the middle part of left side bracket, right bracket is rotated and is installed on the mounting bracket, the end of left side bracket, right bracket is connected with the mounting bracket through bracket spring respectively.

16. The continuous roll plastic bag packaging machine of claim 1, wherein: and an air blowing device is arranged on the mounting rack above the conveying rollers, and air flow released by the air blowing device is blown to the bag opening of the plastic bag to be sealed.

17. The continuous roll plastic bag wrapping machine of claim 16 wherein: the blowing device is a cross flow fan, an air deflector is arranged in front of the cross flow fan, and the air deflector guides the airflow of the cross flow fan to the bag mouth of the plastic bag to be sealed.

18. The continuous roll plastic bag packaging machine of claim 1, wherein: and opening devices symmetrically arranged are arranged on the rack below the main conveying roller.

19. The continuous roll plastic bag wrapping machine of claim 18 wherein: prop a mouthful device including propping a mouthful frame, prop and install main belt pulley, follow the belt pulley on the frame, main belt pulley, follow and be connected with the belt between the belt pulley, main belt pulley is through propping mouthful motor drive, install L shape vaulting pole on the follow belt pulley.

20. The continuous roll plastic bag wrapping machine of claim 19 wherein: the opening supporting device is characterized in that an opening supporting plate is installed on the rack, a moving groove is formed in the opening supporting plate, and the opening supporting device is installed in the moving groove through screws.

21. The continuous roll plastic bag packaging machine of claim 1, wherein: and a labeling device is arranged on the mounting frame.

22. The continuous roll plastic bag wrapping machine of claim 21 wherein: the labeling device is movably arranged on the mounting frame; the labeling device comprises a main label conveying roller, a secondary label conveying roller is arranged on the mounting frame, and the main label conveying roller and the secondary label conveying roller are used for conveying labels.

23. The continuous roll plastic bag wrapping machine of claim 22 wherein: the labeling device is movably connected with the mounting rack through a plurality of connecting rods; and a locking device is arranged between the labeling device and the mounting frame, and the locking device enables the labeling device to be locked on the mounting frame.

24. The continuous roll plastic bag wrapping machine of claim 23 wherein: an unfolding torsion spring is arranged between the connecting rod and the mounting frame and enables the labeling device to move along the connecting rod.

25. The continuous roll plastic bag wrapping machine of claim 23 wherein: the locking device comprises a rotating rod which is rotatably arranged on the labeling device, the tail end of the rotating rod is provided with a locking groove, a locking rod is arranged on the mounting rack and is positioned in the locking groove, and the locking rod is separated from the locking groove when the rotating rod rotates; be provided with rotatory reset spring on the rotary rod, rotatory reset spring one end is fixed on the rotary rod, rotatory reset spring's the other end is fixed on labelling device.

26. The continuous roll plastic bag wrapping machine of claim 25 wherein: the end face of the tail end of the rotating rod is in an inclined plane shape.

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