Plastic woven bag making machine and working method thereof

Abstract

The invention discloses a plastic woven bag making machine and a working method thereof.The plastic woven bag making machine comprises a front double-area feeding frame, the two ends of the interior of the front double-area feeding frame are provided with an upper driving film feeding roller set and a lower driving film feeding roller set respectively, the upper driving film feeding roller set and the lower driving film feeding roller set are used for conveying outer woven films and plastic films in a rolling mode, and a rear film tensioning frame is fixed to one side of the front double-area feeding frame; an inverted-V-shaped roller set used for guiding a plastic film to move is installed in the post-tensioning film frame, and film supporting plates are fixed to the two sides of the top end of the post-tensioning film frame. The continuous wavy glue spraying lines are formed on the surface of the plastic film, glue is distributed more evenly, the bonding strength between the film and the outer woven film is enhanced, compared with a traditional whole-face glue spraying method, the wavy glue spraying mode can accurately provide glue in the area needing to be bonded, and the bonding efficiency is improved. Meanwhile, due to the wavy glue spraying lines, the contact area between the thin film and the woven film is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic woven bag processing, and specifically to a plastic woven bag making machine and its working method. Background Art

[0002] A woven bag making machine is a device specifically used for producing woven bags, and it plays a crucial role especially in the manufacture of woven bags with composite films. The structure of this type of making machine includes a glue spraying system, a composite film conveying system, a heating and curing device, a woven fabric feeding system, a forming and cutting system, a sewing system, and a control system, etc. All these parts work in coordination to jointly complete the production of woven bags; among them, the glue spraying system firmly bonds the composite film and the woven fabric by evenly spraying glue, ensuring the durability and waterproofness of the bag. The heating system cures the glue quickly through heating to increase the bonding strength. In terms of working principle, the making machine uses automated mechanical movements, precise tension control, and automated adjustments to ensure the stability and accuracy during the production process, and finally produces woven bags that meet the standards; For example, a plastic woven bag composite cement packaging bag making disclosed in the authorized publication number CN114103268A includes a frame. One side of the frame is fixedly installed with a dual-material component, one side of the top of the frame close to the dual-material component is fixedly installed with an integration component, one side of the top of the frame close to the integration component is fixedly installed with a folding component, the middle of the frame is fixedly installed with a guiding component, and one side of the frame close to the guiding component is fixedly installed with a double horizontal sewing machine. By setting two solid material rollers, and respectively detachably installing an inner film material and an outer woven material on the outer sides of the two solid material rollers, it is convenient to subsequently manufacture a composite cement packaging bag with an inner film material and an outer woven material. Among them, the inner film material is located inside the packaging bag, effectively improving the sealing effect of the entire cement packaging bag. The above technical solution mainly uses a double horizontal sewing machine and a vertical sewing machine to sew the laminated film material and the outer woven material during the processing. Before this, the film material and the outer woven material still adopt the method of whole-surface glue spraying. Whole-surface glue spraying means evenly applying a layer of glue on the entire surface of the composite film material. The purpose is to ensure that the glue can evenly bond the composite film and the outer woven material. Although this method ensures a relatively high bonding strength, it also requires a large amount of glue to be coated on the surface. Since the glue spraying equipment covers the entire surface, this treatment method results in a large amount of glue used each time, especially when the bonding area between the film and the woven fabric is large, the waste of glue will be more obvious. At the same time, due to covering the entire film surface, the glue spraying process also requires a longer time, that is, too much glue will cause uneven heating and curing in the subsequent process, increasing the curing time of the glue, and even possibly forming glue blocks on the film, thus affecting the quality of the finished product. Summary of the Invention

[0003] The purpose of the present invention is to provide a plastic woven bag making machine and its working method. The front double - zone feeding rack uses an upper - placed active film - feeding roller group and a lower - placed active film - feeding roller group to respectively roll and feed an outer woven film and a plastic film. The plastic film enters the inverted V - shaped roller group in the rear film rack, and then passes through the notch of the film - supporting plate, walks through the film - pressing module, and converges with the outer woven film. During this process, the double - side glue - spraying structure continuously sprays glue at the edge positions of the plastic film. At the same time, the sprocket - driven intermittent pushing module receives power from the rotary drive module to make the double - side glue - spraying structure reciprocate and slide, forming continuous wavy glue - spraying lines on the upper surface of the plastic film, so as to promote the bonding of the plastic film to the outer woven material through the two wavy glue - spraying lines, and solve the problems raised in the above - mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions: A plastic woven bag making machine, comprising: A front double - zone feeding rack, at both ends inside the front double - zone feeding rack, there are respectively arranged an upper - placed active film - feeding roller group and a lower - placed active film - feeding roller group for rolling and feeding an outer woven film and a plastic film. One side of the front double - zone feeding rack is fixed with a rear film - stretching rack, and inside the rear film - stretching rack, there is installed an inverted V - shaped roller group for guiding the movement of the plastic film. On both sides of the top of the rear film - stretching rack, there are fixed film - supporting plates, and at one end of the surface of the film - supporting plate, there is a notch for the outer woven film and the plastic film to pass through. On the outer wall of the front double - zone feeding rack close to the film - supporting plate, there is a film - pressing module; A sprocket - driven intermittent pushing module, the sprocket - driven intermittent pushing module is arranged on one side inner wall of the rear film - stretching rack. The moving end of the sprocket - driven intermittent pushing module is installed with a double - side glue - spraying structure for spraying glue liquid on the plastic film. The sprocket - driven intermittent pushing module and the double - side glue - spraying structure are used to form continuous wavy glue - liquid lines at the two edge positions of the plastic film during the rolling and feeding process of the plastic film. On one side of the back of the front double - zone feeding rack, there is installed a rotary drive module for driving the upper - placed active film - feeding roller group, the lower - placed active film - feeding roller group, and the sprocket - driven intermittent pushing module to work. On one side of the surface of the front double - zone feeding rack, there is installed a motor controller electrically connected to the input end of the rotary drive module.

[0005] Preferably, screw - rod lifting structures are arranged on the front and rear inner walls of the front double - zone feeding rack. The moving end of the screw - rod lifting structure is rotationally installed with a pressure roller through a bearing seat, and the pressure roller is located above the upper - placed active film - feeding roller group.

[0006] Preferably, two symmetric supporting rollers are rotationally installed inside the front double - zone feeding rack below the upper - placed active film - feeding roller group. The lower - placed active film - feeding roller group is located on the right side of the two supporting rollers. At one end inside the rear film - stretching rack, there are rotationally installed two film - guiding rollers, and the central axis height of the film - guiding rollers is lower than the central axis height of the lower - placed active film - feeding roller group.

[0007] Preferably, the rotation drive module consists of a stepper motor, a synchronous pulley, and a belt. The stepper motor is installed on the outer wall of one side of the front double-zone feeding rack through a motor base. The synchronous pulley is installed at the same end of the output shaft of the stepper motor, the upper active film feeding roller group, and the lower active film feeding roller group. The belt is wound around multiple synchronous pulleys.

[0008] Preferably, a baffle is installed on the downhill wall of the rear film rack. Both the baffle and the film supporting plate are made of components made of aluminum alloy.

[0009] Preferably, the film pressing module includes two L-shaped machine bases installed on the outer wall of one side of the front double-zone feeding rack, a double-rod cylinder installed on the outer wall of one side of one of the L-shaped machine bases, and an upper heating plate installed at the bottom end of the piston rod of the double-rod cylinder.

[0010] Preferably, the bottom end of the L-shaped machine base is fixedly connected to the top end of the film supporting plate. Two symmetric U-shaped connecting beams are fixed to the top end of the upper heating plate. The other upper heating plate is installed on the other side at the bottom end of the two U-shaped connecting beams.

[0011] Preferably, the sprocket-driven intermittent pushing module includes a C-shaped frame installed on the inner wall of one side of the rear film rack, a driven shaft rotatably installed on the outer wall of one side of the C-shaped frame, worm wheels, discs respectively fixed at both ends of the driven shaft, and a convex rod fixed on the outer wall of one side of the disc. A worm shaft is rotatably installed on the inner wall of one side of the rear film rack. One end of the worm shaft meshes with the worm wheel. The other end of the worm shaft is installed with a sprocket transmission structure that maintains power transmission with the lower active film feeding roller group. A looped belt hole sliding table is slidably installed on one side inside the C-shaped frame. Two symmetric stoppers are installed on the outer wall of one side of the looped belt hole sliding table. One end of the convex rod extends between the two stoppers. The double-sided glue spraying structure is installed on the outer wall of the other side of the looped belt hole sliding table.

[0012] Preferably, the double-sided glue spraying structure includes a square port glue inlet pipe installed on the outer wall of one side of the looped belt hole sliding table and nozzles installed at both ends on the surface of the square port glue inlet pipe. Support seats for supporting and allowing the square port glue inlet pipe to slide are installed on the front and rear inner walls of the rear film rack.

[0013] The present invention also provides a working method of a plastic woven bag making machine. For the plastic woven bag making machine as described above, it includes the following steps: S101: Introduce the outer woven film and plastic film to be bonded and woven to the upper active film feeding roller group and the lower active film feeding roller group of the front double-zone feeding rack, ensuring that the two parts of the front double-zone feeding rack smoothly feed the outer woven film and plastic film onto the film supporting plate without jamming or uneven feeding. For the plastic film, it needs to follow the inverted V-shaped roller group and be led to the upper surface of the film supporting plate from the notch. The outer woven film is directly led to the upper surface of the film supporting plate from the notch. At this time, the plastic film is below and the outer woven film is above until the ends of the plastic film and the outer woven film are led out of the equipment and connected to the external winding equipment; S102: Connect the double-sided glue spraying structure to the external glue supply pump through a hose, set the flow rate and speed of glue spraying, and start the rotation drive module to work through the motor controller. The rotation drive module continuously feeds the outer woven film and plastic film between the film supporting plate and the film pressing module, and the external winding equipment also synchronously winds the bonded outer woven film and plastic film. At this time, the sprocket-driven intermittent pushing module and the rotation drive module work in coordination to make the double-sided glue spraying structure form a continuous wavy glue spraying line on the plastic film; S103: When the plastic film and the outer woven film pass through the film pressing module, they have been bonded through two wavy glue spraying lines, and the film pressing module presses the plastic film and the outer woven film together to avoid poor bonding caused by uneven glue. The bonded plastic film and outer woven film are pulled and wound by the winding equipment and subjected to subsequent cutting and sewing steps.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: The plastic woven bag making machine and its working method are provided with an upper active film feeding roller group, a lower active film feeding roller group, a rear film stretching frame, a film supporting plate, a notch part, a film pressing module, a bilateral glue spraying structure, a sprocket-driven intermittent pushing module and other cooperating structures. The bilateral glue spraying structure continuously sprays glue at the edge position of the plastic film. At the same time, the sprocket-driven intermittent pushing module receives power from the rotary driving module to make the bilateral glue spraying structure reciprocate and slide, forming a continuous wavy glue spraying line on the upper surface of the plastic film, so as to promote the plastic film to be bonded to the outer weaving through two wavy glue spraying lines. Among them, by forming a continuous wavy glue spraying line on the surface of the plastic film, not only the distribution of the glue is more uniform, but also the bonding strength between the film and the outer weaving film is enhanced. Compared with the traditional whole-surface glue spraying method, this wavy glue spraying method can accurately provide glue in the area where bonding is required without wasting glue. At the same time, the wavy glue spraying line increases the contact surface between the film and the weaving film, which helps to improve the firmness of the bonding. Through this uniform and continuous glue spraying method, the risks of glue coating unevenness or excessive glue, resulting in waste and insecure bonding, are avoided. And through the wavy glue spraying line, the glue spraying area is limited to the edge of the film and the necessary bonding parts, and the glue spraying time is greatly shortened, making the whole process more efficient, and making the glue spraying and subsequent processes smoother, thereby improving the production efficiency. Secondly, the combination of the sprocket-driven intermittent pushing module and the rotary driving module enables the glue spraying structure to reciprocate and slide. At this time, the glue spraying process can automatically adjust the spraying frequency and position to ensure that each part of the two edges of the film can be evenly and appropriately coated with glue, and the glue forms a regular wavy pattern on the film surface. Such a glue coating form is more likely to form a tight contact between the film and the weaving film, and a relatively uniform glue layer is formed during the bonding process, maintaining a stable bonding effect. Finally, due to the relatively uniform distribution of the glue and a reasonable coverage area, during the subsequent heating and curing process, the heat can be more evenly transferred to the glue layer, which helps to accelerate the curing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the front view structural schematic diagram of the present invention; Figure 2 is the three-dimensional structural schematic Figure 1 ; Figure 3 is the three-dimensional structural schematic Figure 2 ; Figure 4 is the three-dimensional sectional structural schematic diagram of the present invention; Figure 5 is the front view sectional structural schematic diagram of the present invention; Figure 6 is the three-dimensional structural schematic of the film pressing module in Embodiment II of the present invention Figure 1; Figure 7 Schematic three-dimensional structure of the film pressing module according to the second embodiment of the present invention Figure 2 ; Figure 8 Schematic three-dimensional structure diagram of the sprocket-driven intermittent pushing module according to the third embodiment of the present invention.

[0016] In the figure: 1. Front double-zone feeding rack; 101. Lead screw lifting structure; 102. Pressing roller; 2. Upper active film feeding roller group; 3. Lower active film feeding roller group; 4. Rotary drive module; 5. Rear film tensioning rack; 501. Film running roller; 6. Film supporting plate; 601. Notch; 7. Inverted V-shaped roller group; 8. Film pressing module; 801. L-shaped machine base; 802. Double-rod cylinder; 803. Upper heating plate; 804. U-shaped connecting beam; 9. Sprocket-driven intermittent pushing module; 901. Worm shaft; 902. C-shaped frame; 903. Sprocket transmission structure; 904. Driven shaft; 905. Worm gear; 906. Return-shaped belt hole slide; 907. Block; 908. Disc; 909. Convex rod; 10. Double-sided glue spraying structure; 1001. Square mouth glue inlet pipe; 1002. Nozzle; 11. Motor controller. Specific embodiments

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0018] Embodiment 1, given by Figures 1 to 5 The present invention includes a front double-zone feeding rack 1. At both ends inside the front double-zone feeding rack 1, there are respectively arranged an upper active film feeding roller group 2 and a lower active film feeding roller group 3 for rolling and feeding an outer woven film and a plastic film. One side of the front double-zone feeding rack 1 is fixed with a rear film tensioning rack 5. And inside the rear film tensioning rack 5, there is installed an inverted V-shaped roller group 7 for guiding the movement of the plastic film. On both sides of the top of the rear film tensioning rack 5, there are fixed film supporting plates 6. And at one end of the surface of the film supporting plate 6, there is provided a notch 601 for the outer woven film and the plastic film to pass through. On the outer wall of the front double-zone feeding rack 1 close to the film supporting plate 6, there is provided a film pressing module 8; The sprocket-driven intermittent pushing module 9 is arranged on the inner wall of one side of the rear film holder 5. A bilateral glue spraying structure 10 for spraying glue on the plastic film is installed at the moving end of the sprocket-driven intermittent pushing module 9. The sprocket-driven intermittent pushing module 9 and the bilateral glue spraying structure 10 are used to form continuous wavy glue lines at the two edge positions of the plastic film during the conveying process of the plastic film. On one side of the back surface of the front double-zone feeding rack 1, a rotary driving module 4 for driving the upper active film feeding roller group 2, the lower active film feeding roller group 3, and the sprocket-driven intermittent pushing module 9 to work is installed. On one side of the surface of the front double-zone feeding rack 1, a motor controller 11 electrically connected to the input end of the rotary driving module 4 is installed; Screw rod lifting structures 101 are arranged on the front and rear inner walls of the front double-zone feeding rack 1. The moving end of the screw rod lifting structure 101 is rotatably installed with a pressure roller 102 through a bearing seat. The pressure roller 102 is located above the upper active film feeding roller group 2. Two symmetrical supporting rollers are rotatably installed inside the front double-zone feeding rack 1 below the upper active film feeding roller group 2. When using the upper active film feeding roller group 2 to actively convey the outer woven film, the staff passes the outer woven film through between the upper active film feeding roller group 2 and the pressure roller 102 and sends it into the space between the film supporting plate 6 and the film pressing module 8 through the notch 601. During this process, the staff operates the height of the pressure roller 102 through the screw rod lifting structure 101, so that the pressure roller 102 and the upper active film feeding roller group 2 stably apply a conveying force to the outer woven film. At this time, the pressure roller 102 and the upper active film feeding roller group 2 can better adapt to the film feeding direction and prevent the film from being torn or slipping while maintaining the film tension; The lower active film feeding roller group 3 is located on the right side of the two supporting rollers. Two film guiding rollers 501 are rotatably installed at one end inside the rear film holder 5. The central axis height of the film guiding rollers 501 is lower than the central axis height of the lower active film feeding roller group 3; A baffle is installed on the downhill wall of the rear film holder 5. Both the baffle and the film supporting plate 6 are made of aluminum alloy components. When using the lower active film feeding roller group 3 to convey the plastic film, the plastic film sequentially passes through the lower active film feeding roller group 3, the film guiding rollers 501, the inverted V-shaped roller group 7 and the notch 601 and enters the space between the film supporting plate 6 and the film pressing module 8. During this process, the plastic film makes a U-turn at the notch 601. During this process, the inverted V-shaped roller group 7 controls the tension to avoid the film from being torn or unevenly stretched, so as to ensure the stable transmission of the film material; The rotation drive module 4 consists of a stepper motor, a synchronous pulley, and a belt. The stepper motor is installed on the outer wall of one side of the front double-zone feeding rack 1 through a motor base. The synchronous pulley is installed at the same end of the output shaft of the stepper motor, the upper active film feeding roller group 2, and the lower active film feeding roller group 3. The belt is wound around multiple synchronous pulleys. The stepper motor in the rotation drive module 4 drives the upper active film feeding roller group 2 and the lower active film feeding roller group 3 to rotate through a belt pulley and a belt, so that the upper active film feeding roller group 2 and the lower active film feeding roller group 3 respectively roll and feed the outer woven film and the plastic film.

[0019] A working method of a plastic woven bag making machine according to this embodiment, such as the plastic woven bag making machine described above, includes the following steps: S101: Introduce the outer woven film and the plastic film to be bonded and woven to the upper active film feeding roller group 2 and the lower active film feeding roller group 3 of the front double-zone feeding rack 1, and ensure that the two parts of the front double-zone feeding rack 1 smoothly feed the outer woven film and the plastic film onto the film supporting plate 6 without jamming or uneven feeding. For the plastic film, the plastic film needs to follow the inverted V-shaped roller group 7 and be led to the upper surface of the film supporting plate 6 from the notch 601, while the outer woven film is directly led to the upper surface of the film supporting plate 6 from the notch 601. At this time, the plastic film is below and the outer woven film is above until the ends of the plastic film and the outer woven film are led out of the equipment and connected to an external winding device. S102: Connect the double-sided glue spraying structure 10 to an external glue supply pump through a hose, set the flow rate and speed of glue spraying, and start the rotation drive module 4 to work through the motor controller 11. The rotation drive module 4 makes the upper active film feeding roller group 2 and the lower active film feeding roller group 3 continuously feed the outer woven film and the plastic film between the film supporting plate 6 and the film pressing module 8, and the external winding device also synchronously winds the bonded outer woven film and plastic film. At this time, the sprocket-driven intermittent pushing module 9 and the rotation drive module 4 work in coordination to make the double-sided glue spraying structure 10 form a continuous wavy glue spraying line on the plastic film. S103: When the plastic film and the outer woven film pass through the film pressing module 8, the two have been bonded through two wavy glue spraying lines, and the film pressing module 8 presses the plastic film and the outer woven film together to avoid poor bonding caused by uneven glue. The bonded plastic film and outer woven film are pulled and wound by the winding device and subjected to subsequent cutting and sewing steps.

[0020] Embodiment 2, on the basis of Embodiment 1, by Figure 6 and Figure 7Given that the film laminating module 8 includes two L-shaped bases 801 installed on the outer wall of one side of the front double-zone feeding rack 1, a double-rod cylinder 802 installed on the outer wall of one side of one of the L-shaped bases 801, and an upper heating plate 803 installed at the bottom end of the piston rod of the double-rod cylinder 802. The bottom end of the L-shaped base 801 is fixedly connected to the top end of the film supporting plate 6. Two symmetric U-shaped connecting beams 804 are fixed to the top end of the upper heating plate 803, and another upper heating plate 803 is installed on the other side at the bottom ends of the two U-shaped connecting beams 804; After the plastic film is sprayed with glue and enters between the film supporting plate 6 and the film laminating module 8 through the notch 601, the worker drives the U-shaped connecting beam 804 and the upper heating plate 803 to move downward through the double-rod cylinder 802 until the gap between the upper heating plate 803 and the film supporting plate 6 is just enough for the outer woven film and the plastic film to pass through. On the one hand, the film supporting plate 6 evenly distributes the weight of the film material to prevent the film from sagging or deforming due to gravity during transportation. On the other hand, the upper heating plate 803 provides heat supply above the outer woven film and the plastic film. By providing a uniform heating effect, the glue is quickly cured, thereby improving the bonding strength.

[0021] Example 3, based on Example 2, Figure 8 Given that the bilateral glue spraying structure 10 includes a square-port glue inlet pipe 1001 installed on the outer wall of one side of the loop-hole slide 906 and nozzles 1002 installed at both ends of the surface of the square-port glue inlet pipe 1001. Support seats for supporting and allowing the square-port glue inlet pipe 1001 to slide are installed on the front and rear inner walls of the rear film rack 5. The external glue supply pump is connected to one end of the square-port glue inlet pipe 1001 through a switch valve and a hose. Then, the glue enters the square-port glue inlet pipe 1001 and is sprayed out through the nozzles 1002 at both ends, so that the glue is sprayed on the plastic film. At this time, the plastic film continues to move driven by the external winding device, and then a continuous glue line is formed; The sprocket-driven intermittent pushing module 9 includes a C-shaped frame 902 installed on the inner wall of one side of the rear film rack 5, a driven shaft 904 rotatably installed on the outer wall of one side of the C-shaped frame 902, worm wheels 905 and discs 908 respectively fixed at both ends of the driven shaft 904, and a convex rod 909 fixed on the outer wall of one side of the disc 908. A worm shaft 901 is rotatably installed on the inner wall of one side of the rear film rack 5. One end of the worm shaft 901 meshes with the worm wheel 905, and a sprocket drive structure 903 for maintaining power transmission with the lower active film feeding roller group 3 is installed at the other end of the worm shaft 901. A loop-hole slide 906 is slidably installed on one side inside the C-shaped frame 902. Two symmetric stoppers 907 are installed on the outer wall of one side of the loop-hole slide 906. One end of the convex rod 909 extends between the two stoppers 907, and the bilateral glue spraying structure 10 is installed on the outer wall of the other side of the loop-hole slide 906; During the operation of the rotary drive module 4, the stepper motor drives the worm shaft 901, the worm gear 905, the driven shaft 904, and the disc 908 to rotate in sequence through the sprocket drive structure 903. At this time, the convex rod 909 forces the loop belt hole slider 906, the square port glue inlet pipe 1001, and the nozzle 1002 to intermittently slide in the Y-axis direction through the two stoppers 907, forcing the glue spraying path of the nozzle 1002 on the plastic film to be wavy. By controlling the reciprocating motion of the double-sided glue spraying structure 10, uniform glue spraying is achieved, and the spacing of the glue spraying is ensured to be uniform and clear.

[0022] When the embodiment of the present application is in use, first, the staff introduce the outer woven film and the plastic film to be bonded and woven to the upper active film feeding roller group 2 and the lower active film feeding roller group 3 of the front double-zone feeding rack 1, ensuring that the two parts of the front double-zone feeding rack 1 smoothly send the outer woven film and the plastic film onto the film supporting plate 6 without jamming or uneven feeding. During this process, the upper and lower film roller groups should be ensured to be in good working condition to accurately guide the film material through each link, and ensure that the outer woven film and the plastic film are not damaged and have uniform tension. For the plastic film, the plastic film needs to follow the inverted V-shaped roller group 7 and be led to the upper surface of the film supporting plate 6 from the notch 601, while the outer woven film is directly led to the upper surface of the film supporting plate 6 from the notch 601. At this time, the plastic film is below and the outer woven film is above until the ends of the plastic film and the outer woven film are led out of the equipment and connected to the external winding equipment. By guiding the plastic film at a reasonable angle, it can smoothly enter the next film pressing module 8; the staff connect the bilateral glue spraying structure 10 to the external glue supply pump through a hose and set the flow rate and speed of the glue spraying. During this process, according to the actual situation of the film, it is necessary to ensure that the glue spraying flow rate is appropriate to avoid too much or too little glue; after the equipment adjustment is completed, the staff start the rotation drive module 4 through the motor controller 11 to work. The rotation drive module 4 makes the upper active film feeding roller group 2 and the lower active film feeding roller group 3 continuously send the outer woven film and the plastic film between the film supporting plate 6 and the film pressing module 8, and the external winding equipment also synchronously winds the bonded outer woven film and plastic film. During this process, the bilateral glue spraying structure 10 starts to operate, and the glue will be continuously sprayed on the two edges of the plastic film. The staff keep observing to ensure that the glue spraying line is clear and continuous, and the sprocket-driven intermittent pushing module 9 and the rotation drive module 4 start to work in coordination to make the bilateral glue spraying structure 10 form a continuous wavy glue spraying line on the plastic film; when the plastic film and the outer woven film pass through the film pressing module 8, the two have been bonded through two wavy glue spraying lines, and the film pressing module 8 presses the plastic film and the outer woven film to avoid poor bonding caused by uneven glue. The bonded plastic film and outer woven film are pulled and wound by the winding equipment and subjected to subsequent cutting and sewing steps; when the processing task is completed, the operator stops the machine and cleans the equipment according to the standard operating procedure, especially the bilateral glue spraying structure 10. The cleaning work includes removing the residual glue at the glue spraying port to ensure that the bilateral glue spraying structure 10 is unblocked and maintain the long-term good operation of the equipment.

[0023] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0024] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plastic woven bag making machine, characterized in that: include: A front double-zone feeding frame (1), wherein the two ends of the front double-zone feeding frame (1) are respectively provided with an upper active film feeding roller group (2) and a lower active film feeding roller group (3) for rolling the outer woven film and the plastic film, a rear film tensioning frame (5) is fixed on one side of the front double-zone feeding frame (1), and an inverted V-shaped roller group (7) for guiding the movement of the plastic film is installed inside the rear film tensioning frame (5), a film supporting plate (6) is fixed on both sides of the top of the rear film tensioning frame (5), and a notch (601) for the outer woven film and the plastic film to pass through is provided on one end of the surface of the film supporting plate (6), and a film pressing module (8) is provided on the outer wall of the front double-zone feeding frame (1) on one side close to the film supporting plate (6); A sprocket driven intermittent push module (9) is arranged on an inner wall of one side of a rear film tensioning frame (5); a double-sided glue spraying structure (10) for spraying glue onto the plastic film is installed at the movable end of the sprocket driven intermittent push module (9); the sprocket driven intermittent push module (9) and the double-sided glue spraying structure (10) are used to form a continuous wavy glue line at the two edge positions of the plastic film during the plastic film rolling process; a rotation drive module (4) for driving an upper active film feeding roller group (2), a lower active film feeding roller group (3), and the sprocket driven intermittent push module (9) is installed on one side of the back of the front double-zone feeding frame (1); and a motor controller (11) electrically connected to the input end of the rotation drive module (4) is installed on one side of the surface of the front double-zone feeding frame (1).

2. The plastic woven bag making machine according to claim 1, characterized in that: A screw lifting structure (101) is provided on the front and rear inner walls of the front dual-zone feeding frame (1), and a pressing roller (102) is rotatably mounted on the movable end of the screw lifting structure (101) via a bearing seat, and the pressing roller (102) is located above the upper active film feeding roller group (2).

3. The plastic woven bag making machine according to claim 2, characterized in that: Two symmetrical supporting rollers are rotatably mounted inside the front double-zone feeding frame (1) below the upper active film feeding roller group (2), the lower active film feeding roller group (3) is located on the right side of the two supporting rollers, and two film running rollers (501) are rotatably mounted at one end inside the rear film tensioning frame (5), and the center axis height of the film running roller (501) is lower than the center axis height of the lower active film feeding roller group (3).

4. The plastic woven bag making machine according to claim 3, characterized in that: The rotary drive module (4) is composed of a stepper motor, a synchronous wheel, and a belt. The stepper motor is mounted on an outer wall of one side of the front double-zone feeding frame (1) via a motor seat. The synchronous wheel is mounted on the same end of the stepper motor output shaft, the upper active film feeding roller group (2), and the lower active film feeding roller group (3). The belt is wound around a plurality of synchronous wheels.

5. The plastic woven bag making machine according to claim 3, characterized in that: A baffle is installed on the downslope wall of the post-tensioning film frame (5); the baffle and the film supporting plate (6) are both made of aluminum alloy.

6. The plastic woven bag making machine according to claim 5, characterized in that: The film pressing module (8) comprises two L-shaped machine bases (801) mounted on the outer wall of one side of the front double-zone feeding rack (1), a double-rod cylinder (802) mounted on the outer wall of one side of the L-shaped machine base (801), and an upper heating plate (803) mounted on the bottom end of the piston rod of the double-rod cylinder (802).

7. The plastic woven bag making machine according to claim 6, characterized in that: The bottom end of the L-shaped machine base (801) is fixedly connected to the top end of the film supporting plate (6); two symmetrical U-shaped connecting beams (804) are fixed to the top end of the upper heating plate (803); another upper heating plate (803) is installed on the other side of the bottom ends of the two U-shaped connecting beams (804).

8. The plastic woven bag making machine according to claim 4, characterized in that: The sprocket driven intermittent push module (9) comprises a C-shaped frame (902) mounted on the inner wall of one side of the post-tensioning film frame (5), a driven shaft (904) rotatably mounted on the outer wall of one side of the C-shaped frame (902), a worm wheel (905) fixed at both ends of the driven shaft (904), a disc (908), and a protruding rod (909) fixed on the outer wall of one side of the disc (908); a worm shaft (901) rotatably mounted on the inner wall of one side of the post-tensioning film frame (5); one end of the worm shaft (901) and the worm wheel (905) are connected to each other. The two worm shafts (901) are meshed with each other, and the other end of the worm shaft (901) is equipped with a sprocket transmission structure (903) for maintaining power transmission with the lower active film feeding roller group (3). A circular perforated slide (906) is slidably installed on one side of the interior of the C-shaped frame (902), and two symmetrical blocks (907) are installed on one side of the outer wall of the circular perforated slide (906). One end of the protruding rod (909) extends between the two blocks (907), and the double-sided glue spraying structure (10) is installed on the other side of the outer wall of the circular perforated slide (906).

9. The plastic woven bag making machine according to claim 8, characterized in that: The double-sided glue spraying structure (10) comprises a square-mouth glue inlet pipe (1001) installed on the outer wall of one side of the circular perforated slide (906) and nozzles (1002) installed at both ends of the surface of the square-mouth glue inlet pipe (1001), and brackets for supporting and allowing the square-mouth glue inlet pipe (1001) to slide are installed on the front and rear inner walls of the rear film frame (5).

10. A working method of a plastic woven bag making machine, comprising the plastic woven bag making machine as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S101: Introduce the outer braided film and the plastic film to be bonded and braided to the upper active film feeding roller group (2) and the lower active film feeding roller group (3) of the front double-zone feeding frame (1), and ensure that the two parts of the front double-zone feeding frame (1) smoothly feed the outer braided film and the plastic film to the film supporting plate (6) without jamming or uneven feeding. For the plastic film, the plastic film needs to follow the inverted V-shaped roller group (7) and be led from the notch (601) to the upper surface of the film supporting plate (6), while the outer braided film is directly led from the notch (601) to the upper surface of the film supporting plate (6). At this time, the plastic film is at the bottom and the outer braided film is at the top, until the ends of the plastic film and the outer braided film are both led out of the device and connected to the external winding device; S102: The double-sided glue spraying structure (10) is connected to an external glue supply pump via a hose, and the flow rate and speed of the glue spraying are set. The rotary drive module (4) is turned on through the motor controller (11) to start working. The rotary drive module (4) enables the upper active film feeding roller group (2) and the lower active film feeding roller group (3) to continuously feed the outer woven film and the plastic film to between the film supporting plate (6) and the film pressing module (8), and the external winding device also synchronously winds up the bonded outer woven film and the plastic film. At this time, the sprocket driven intermittent pushing module (9) and the rotary drive module (4) work in coordination, so that the double-sided glue spraying structure (10) forms a continuous wavy glue spraying line on the plastic film; S103: When the plastic film and the outer braided film pass through the laminating module (8), the two are bonded together by two wavy glue spraying lines, and the laminating module (8) presses the plastic film and the outer braided film together to avoid poor bonding due to uneven glue. The bonded plastic film and the outer braided film are towed and rolled up by the winding device, and the subsequent cutting and sewing steps are carried out.

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