A bag-making machine for single-sided open continuous roll bags

Abstract

The present invention relates to a bag-making machine for single-sided open continuous roll bags, which includes a feeding mechanism and intermediate plates oppositely arranged behind the feeding mechanism. A heat-sealing mechanism is mounted on the intermediate plates. The heat-sealing mechanism includes a feeding and traction roller group, a first heat-sealing device, a punching device, a second heat-sealing device, an optoelectronic positioning device, a cooling device, and a cutting-off device successively mounted on the intermediate plates. It also includes a winding mechanism. A bag-twisting mechanism is arranged between the cutting-off device and the winding mechanism. The beneficial effects of the present invention are as follows: The automatic bag-twisting can be realized through the bag-twisting device, so that one side of the continuous roll bag is in an open state before winding, which is convenient for cooperating with an automatic bundling machine, improving the packaging efficiency and reducing the labor intensity of workers. The provided traction mechanism can not only play a role in traction on the continuous roll bag but also make the continuous roll bag smoother before winding, facilitating winding. The heat-sealing driving mechanism has a simple structure and can drive the components mounted on the mounting crossbeam simultaneously, and has strong versatility.

Description

Technical Field

[0001] The present invention relates to the field of bag-making machines, and more particularly to a bag-making machine for single-sided open continuous roll bags. Background Art

[0002] Packaged products are involved in all aspects of daily life. Most of the products such as melon seeds, peanuts, clothes, and items mailed at the post office are independently packaged in packaging bags. For example, in the currently popular online shopping, most clothes are packaged in plastic bags and then delivered by express for transportation. Some existing enterprises still use methods such as manual bag-taking, filling, and sealing for the bagging operation of products. Such operations are inefficient and have high labor costs. Of course, some enterprises also use a conveying mechanism for packaging bags to convey the packaging bags, and then perform manual bagging and sealing operations. In the existing technology, it is often difficult to master the conveying speed of the packaging bags and the filling speed of the products, making it difficult to carry out the packaging work quickly. Moreover, the human participation in each link wastes human resources and cannot achieve automated operation. Therefore, a new type of continuous roll bag-making machine is needed. A continuous roll bag-making machine is a machine for making various plastic packaging bags or other material packaging bags. Specifically, the production process of general continuous roll bags generally includes unwinding, bag-making, bag-twisting, and winding. Among them, bag-making is to use bag-making equipment to seal the four sides of the bag by heat-sealing the folded-edge material. A continuous roll bag refers to a bag that is wound together after bag-making. The continuous roll bag is small in volume, convenient for storage and use. When using bag-making equipment to produce continuous roll bags, it is also necessary to cut the position where the packaging bag needs to be opened to facilitate the separation of individual packaging bags in the future.

[0003] Bag-making equipment is a machine for making various plastic packaging bags or other material packaging bags. Specifically, the production process of general express delivery bags generally includes unwinding, bag-making, and winding. Among them, bag-making is to use bag-making equipment to seal the four sides of the bag by heat-sealing the folded-edge material. A continuous roll bag refers to a bag that is wound together after bag-making. The continuous roll bag is small in volume, convenient for storage and use. When using bag-making equipment to produce continuous roll bags, it is also necessary to cut the position where the packaging bag needs to be opened to facilitate the separation of individual packaging bags in the future. However, the existing bag-making equipment only cuts the packaging bag, and the packaging bag does not actually have an opening. When using the packaging bag for packing, people need to manually rub open the cut position to make the packaging bag open. When using an automatic packing machine for packing, only individual opened packaging bags can be placed separately at the packing machine, or each cut position needs to be manually rubbed open by people before putting it into the packing machine, which is very inconvenient to use. Summary of the Invention

[0004] The technical problem to be solved by the present invention is aimed at the deficiencies of the above-mentioned prior art,

[0005] and provides a bag-making machine for single-sided open continuous roll bags.

[0006] To achieve the above object, the present invention provides the following technical solution: A bag-making machine for single-sided open continuous rolls of bags, comprising a feeding mechanism, intermediate plates oppositely arranged behind the feeding mechanism, on which are successively mounted a feeding and pulling roller group, a first heat-sealing device, a punching device, a second heat-sealing device, a photoelectric positioning device, a cooling device, a cutting-off device and a winding mechanism, characterized in that: between the cutting-off device and the winding mechanism, there is a bag-rubbing mechanism for rubbing and opening the single side of the tear-open notch of the continuous roll of bags.

[0007] With the above technical solution, for continuous roll plastic bags, the existing technology is to put the roll of material coming out of the blown film machine into the feeding mechanism of the bag-making machine and convey the continuous roll of bags to the bag-making mechanism for bag-making. The bag-making action is to first heat-seal one end of the express bag at intervals along the conveying direction through the heat-sealing station to form the bottom of the packaging bag, and punch a plurality of spaced notches (this setting is called cutting off) at a position away from the inner cavity of the express bag in this area to form a tear-open notch. When in use, the express bag can be individually torn off along the tear-open notch to package the express items. The express bags made by such bag-making machines in the existing technology are extremely difficult to cooperate with an automatic bundling machine. This is because the material between the tear-open notches remains continuous before the express bag is torn off, and only after tearing off, the bag body at the tear-open notch needs to be manually rubbed open to form a cavity for accommodating the express. However, in the present invention, by setting a bag-rubbing mechanism to rub and open the single side of the tear-open notch, that is, one side of each bag body on the same side of the continuous roll of bags is in a separated state between the upper and lower bag bodies after the bag-rubbing action of the bag-rubbing mechanism. Even if the express bag is not torn off from the roll of material, one side of it is already in an open state at the tear-open notch, and the express items can be put into the cavity through this opening. That is, by pre-rubbing and opening one side of the tear-open notch through the bag-rubbing mechanism, it can easily cooperate with the automatic bundling machine for use, and the step of manually tearing the express bag from the roll of material and then heat-sealing it through the bundling machine is omitted, improving the bundling efficiency and reducing the labor intensity of workers.

[0008] The above bag-making machine for single-sided open continuous rolls of bags can be further set as the bag-rubbing mechanism includes a first roller shaft and a second roller shaft, a bag-passing gap for the continuous roll of bags to pass through is formed between the first roller shaft and the second roller shaft, one end of the first roller shaft is provided with a first bag-rubbing driving mechanism for driving the first roller shaft to rotate axially, and one end of the second roller shaft is provided with a second bag-rubbing driving mechanism for driving the second roller shaft to approach or move away from the bag-passing gap in a direction perpendicular to the ground.

[0009] With the above technical solution, the first bag rubbing drive mechanism is the first bag rubbing drive motor. One end of the first roller shaft is provided with a first synchronous pulley, and one end of the first bag rubbing drive motor is provided with a second synchronous pulley. The first synchronous pulley and the second synchronous pulley rotate synchronously through a synchronous belt. The first roller shaft always rotates along its own axial direction under the action of the first bag rubbing drive mechanism. When the second roller shaft approaches the first roller shaft under the action of the second bag rubbing drive mechanism, the continuous roll bag passing through the bag passing gap contacts the first roller shaft on one side and the second roller shaft on the other side under the action of the traction mechanism at one end. Since the second roller shaft does not rotate along its own axial direction, it is equivalent to a stationary roller shaft when contacting the continuous roll bag, that is, only one side of the continuous roll bag is rubbed open by the first roller shaft. Because the packaging bag cannot be in contact with the first roller shaft and the second roller shaft for a long time respectively, otherwise the surface of the packaging bag in contact with the first roller shaft will be rubbed disorderly and cannot be wound by the subsequent winding mechanism. Therefore, it is necessary to make the bag rubbing mechanism contact both sides of the packaging bag only for an instant. In the present invention, the second roller shaft is set to be able to lift and lower along the direction perpendicular to the bottom surface. When the continuous roll bag reaches the position where bag rubbing is required, it contacts the continuous roll bag under the action of the second bag rubbing drive mechanism. After bag rubbing is completed, it is conveyed to the winding mechanism under the action of the second bag rubbing drive mechanism and the traction mechanism at the other end.

[0010] The above-mentioned bag making machine for a single-sided opening continuous roll bag can be further set as follows: the second bag rubbing drive mechanism includes a second bag rubbing drive motor and linkage plates respectively arranged at both ends of the second roller shaft. A guiding structure is arranged on one side of the linkage plate, and a cam transmission structure for driving the linkage plate to slide up and down along the guiding structure so as to drive the second roller shaft to lift and lower is arranged at the other end of the linkage plate relative to the connection with the second roller shaft. The cam transmission structure is driven by the second bag rubbing drive motor.

[0011] With the above technical solution, the linkage plate is driven to move up and down along the guiding structure by the cam transmission structure, so as to drive the second roller shaft to lift and lower in linkage. The cam transmission structure is driven by the second bag rubbing drive motor. The guiding structure is set to ensure that the second roller shaft will not deviate when lifting and lowering. The cam transmission structure is convenient for cooperating with the bag rubbing when only the position of the packaging bag that needs to be rubbed is in contact with the second roller shaft during bag making. The size of the cam can be set according to the length of the packaging bag to ensure that the cam contacts the packaging bag once in a rotation period, and the contact position is generally set in the middle of the packaging bag.

[0012] The above-mentioned bag making machine for a single-sided opening continuous roll bag can be further set as follows: the cam transmission structure includes a camshaft. The second bag rubbing drive motor is connected to one end of the camshaft. A cam is arranged on the camshaft, and a cam outer ring is wrapped outside the cam. The cam outer ring is connected to the linkage plate through a connecting device.

[0013] By adopting the above technical solution, the second bag rubbing drive motor is connected to the camshaft, and a cam is arranged on the camshaft. Preferably, cams are arranged opposite to each other on both sides of the camshaft. The cam outer ring covered by the cam is connected to the linkage plate through a connecting device. If the linkage plate is directly connected to the cam through the connecting device, the cam will be damaged after working for a long time and its service life will be short.

[0014] The above-mentioned bag making machine for single-sided opening continuous roll bags can be further configured as follows: the connecting device includes a connecting rod, the outer ring of the cam is provided with a first connecting part for connecting the connecting rod, the linkage plate is provided with a second connecting part connected to the connecting rod, and one end of the connecting rod is connected to the first connecting part and the other end is connected to the second connecting part.

[0015] In one embodiment of the present invention, a first connecting portion is provided on the outer ring of the cam to connect with a connecting rod, so as to improve the service life of the cam. One end of the connecting rod is connected with the first connecting portion by a bolt, and the other end is connected with an outer spherical ball bearing with a suspended seat eccentric sleeve by a bolt and then connected with the second connecting portion of the linkage plate.

[0016] The above-mentioned single-sided opening bag-on-roll bag making machine can be further configured as follows: the guide structure includes a slider fixedly connected to the other end of the second roller shaft opposite to the linkage plate and connected thereto, and a slide rail used in conjunction with the slider.

[0017] By adopting the above technical solution, the guide structure is set as a slide rail, which is easy to install and has precise guidance.

[0018] The above-mentioned bag making machine for single-sided open continuous roll bags can be further configured as follows: the traction mechanism includes a traction driven rubber roller and a traction active rubber roller arranged below the traction driven rubber roller and in contact with the traction driven rubber roller, one end of the traction active rubber roller is driven by a traction motor, and both ends of the traction driven rubber roller are mounted on the middle plate through a mounting frame, and the mounting frame is provided with an adjustment structure that can adjust the pressure between the traction driven rubber roller and the traction active rubber roller at the end of the traction driven rubber roller away from the traction active rubber roller.

[0019] With the above technical solution, the traction mechanism at one end draws the continuous roll bag into the bag rubbing mechanism, and the traction mechanism at the other end draws the continuous roll bag after bag rubbing towards the winding mechanism. Since the driven traction rubber roller and the driving traction rubber roller are in contact with each other, when the continuous roll bag passes between the driven traction rubber roller and the driving traction rubber roller, it will be subjected to the pressure between the two rubber rollers. And the rubber roller itself has a certain elastic deformation. Sometimes the pressure is not enough to ensure the traction effect, and sometimes the contact between the two is too tight, which is likely to cause the continuous roll bag to be unable to pass between them. Therefore, it is necessary to adjust the pressure between the two according to the actual situation. The adjustment structure includes an adjustment rod provided at one end of the mounting frame away from the driven traction rubber roller. The driven traction rubber roller is movably connected to the mounting frame through an adjustment slider. The adjustment rod is threadedly connected to the adjustment slider. One end of the adjustment rod facing the driven traction rubber roller is fixedly connected with a pressing plate. Between the pressing plate and the adjustment slider, there is an elastic holding member with one end abutted against the pressing plate and the other end abutted against the adjustment slider. By movably connecting the driven traction rubber roller to the mounting frame through the adjustment slider, the driven traction rubber roller can be adjusted to move along the mounting position of the mounting frame through the adjustment slider. The elastic member provided between the pressing plate of the adjustment rod and the adjustment slider gives pressure to the driven traction rubber roller. By adjusting the compression degree of the elastic member through the adjustment rod, the pressure of the driven traction rubber roller on the driving traction rubber roller can be adjusted, so as to adjust the traction effect at both ends of the express bag and the flatness of the express bag according to the actual bag rubbing effect. A lifting rod is provided on the adjustment slider, and a pulling rod is connected to the lifting rod. By providing a lifting rod on the adjustment slider and a pulling rod on the lifting rod, after the adjustment rod adjusts the pressure between the pressing plate and the adjustment slider, the driven traction rubber roller can be slightly lifted along the mounting frame away from the driven traction rubber roller through the pulling rod to adjust the pressure between the two. The elastic holding member is a compression spring. Using a compression spring as the elastic holding member is convenient for later maintenance and replacement.

[0020] The above-mentioned bag making machine for a single-sided open continuous roll bag can be further set as follows: the first heat sealing device, the second heat sealing device, the cooling device, and the perforating device all include an upper knife seat and a lower knife seat. The lower knife seat is mounted on the middle plate. A heat sealing driving mechanism is provided below the middle plate to simultaneously drive the upper knife seats of the first heat sealing device, the second heat sealing device, the cooling device, and the perforating device to reciprocate up and down and fit with the lower knife seats at the same time.

[0021] Adopting the above technical solution, the first heat-sealing device includes an upper knife seat of the first heat-sealing device, a lower knife seat of the first heat-sealing device, and a first heat-sealing copper knife is installed on the first heat-sealing device. The punching device is a packaging bag punching device in the prior art, which is used to punch exhaust holes in the packaging bag to make the inside of the packaging bag airless. The second heat-sealing device includes an upper knife seat of the second heat-sealing device and a lower knife seat of the second heat-sealing device, and a second heat-sealing copper knife is installed on the upper knife seat of the second heat-sealing device. The photoelectric positioning device is a photoelectric sensor in the prior art. The cooling device includes an upper cooling knife seat and a lower cooling knife seat, and a cooling knife is installed on the upper cooling knife seat. The temperature of the cooling knife is lower than that of the heat-sealing copper knife, so that the express bag after heat-sealing can be quickly cooled. The cutting device is used to cut off the position to be opened of each packaging bag. Through the heat-sealing driving mechanism, the upper knife seats of the first heat-sealing device, the second heat-sealing device, the cooling device, and the cutting device are simultaneously driven to approach the lower knife seats, so that the knife plates installed on the upper knife seats contact the express bag, and heat-sealing, cooling, or cutting operations are performed, ensuring the synchronization of each device and reducing the number of driving mechanisms, thereby reducing the overall cost of the machine.

[0022] The above-mentioned bag-making machine for single-sided opening continuous roll bags can be further set as follows: on one side of the middle plate opposite to each other, there are relatively arranged mounting crossbeams, and a heat-sealing driving motor is installed on one side of the middle plates close to the ground. Multiple groups of linkage structures are arranged at intervals at one end of the mounting crossbeam facing the heat-sealing driving motor. There is a swing-arm transmission structure between one group of linkage structures and the heat-sealing driving motor, and the linkage structure drives the mounting crossbeam to reciprocate vertically up and down along the middle plate through the swing-arm transmission structure.

[0023] Adopting the above technical solution, for the linkage structure and the driving mechanism, only the lower knife seats of the heat-sealing device, the cutting mechanism, etc. need to be fixedly installed on the upper end of the middle plate, and then the upper knife seats are all installed on the mounting crossbeam. Through the cooperation of the swing-arm transmission structure arranged between one group of linkage structures and the heat-sealing driving motor, the upper knife seats of the first heat-sealing device, the second heat-sealing device, the cooling device, and the cutting device are simultaneously moved up or down. When moving down, the knife plates installed on the upper knife seats are pressed against the express bag passing between the two to achieve heat-sealing or cutting, ensuring the synchronization of each device and reducing the number of driving motors, thereby reducing the overall cost of the machine.

[0024] The above-mentioned bag-making machine for single-sided open continuous roll bags can be further configured as follows: The linkage structure includes a plurality of transmission rollers installed at intervals between the installation cross beam and the heat-sealing drive motor with an intermediate plate. Both ends of each transmission roller are installed with first swing arms fixedly connected to the transmission roller. The other end of the first swing arm is provided with a first connecting plate connected to the first swing arms of each linkage structure. Both ends of the transmission roller are also installed with second swing arms. Both sides of the second swing arm are connected to the installation cross beam through relatively arranged second connecting plates. The swing arm type transmission structure includes a motor disc installed on the heat-sealing drive motor. An eccentrically installed first connecting rod is installed on the motor disc. The other end of the first connecting rod is installed with a third swing arm, and the third swing arm is fixedly connected to one of the transmission rollers.

[0025] With the above technical solution, the first swing arms installed on each driving roller are connected to the other end of the connecting transmission shaft through the first connecting plate. On each transmission shaft, a second swing arm is further provided and connected to the mounting cross beam through the second connecting plate. A third swing arm is provided on one of the transmission shafts and connected to the first connecting rod on the motor disc. When the motor drives the motor disc to rotate, every time the motor disc rotates one week, it drives the third swing arm through the first connecting rod to drive the transmission shaft connected to the first connecting rod to rotate. Since the first swing arms are all connected through the first connecting plate, each driving roller axially rotates through the first swing arm under the action of the first connecting plate. When rotating, the driving roller drives the mounting cross beam to lift or descend back to the initial position through the second swing arm and the second connecting plate, so as to realize simultaneously driving the heat sealing device and the upper tool holder of the point-breaking mechanism installed on the mounting cross beam to lift or approach the lower tool holder to achieve heat sealing or point breaking. A sliding adjustment mechanism is provided at one end of the mounting cross beam far from the hot air driving motor. By setting the sliding adjustment mechanism, the upper tool holders of the first heat sealing device, the second heat sealing device, the cooling device, and the point-breaking device can be installed on the sliding adjustment mechanism. When it is necessary to prepare express delivery bags of different lengths, the upper tool holders of the heat sealing device and the point-breaking mechanism can be adjusted as required through the sliding adjustment mechanism, with strong versatility. The sliding adjustment mechanism includes a linear guide rail fixedly arranged on the mounting cross beam along the length direction of the mounting cross beam. A plurality of guiding sliders are installed on the linear guide rail. The upper tool holders of the first heat sealing device, the second heat sealing device, the cooling device, and the point-breaking device can be installed on the sliders. The distance between the upper tool holders of the first heat sealing device, the second heat sealing device, the cooling device, and the point-breaking device is adjusted through the sliders to adapt to express delivery bags of different lengths. A plurality of supporting structures for supporting the mounting cross beam are arranged at intervals below the mounting cross beam. Considering that the weight of the upper tool holders of the heat sealing device and the point-breaking mechanism is relatively large and the mounting cross beam cannot bear the weight easily, which may cause the mounting cross beam to bend and lead to equipment failure, the supporting structure is set to strengthen the bearing capacity of the mounting cross beam. The supporting structure includes a supporting seat, and a supporting shaft fixedly connected to the supporting seat is penetrated in the supporting seat. One end of the supporting shaft is fixedly connected to the mounting cross beam. By setting the supporting seat and the supporting shaft fixedly connected to the supporting seat and fixedly connecting the other end of the supporting shaft to the mounting cross beam, the weight of the components installed on the mounting cross beam can be dispersed to the supporting shaft and the supporting seat, improving the bearing capacity of the mounting cross beam.

[0026] The beneficial effects of the present invention are as follows: The automatic bag rubbing can be realized through the bag rubbing device, so that one side of the continuous roll bag is in an open state before winding, which is convenient for cooperating with the automatic packing machine, improving the packaging efficiency and reducing the labor intensity of workers. The provided traction mechanism can not only play a role in traction on the continuous roll bag, but also make the continuous roll bag more flat before winding, facilitating winding. The heat sealing driving mechanism has a simple structure and can simultaneously drive the components installed on the mounting cross beam, and has strong versatility.

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Brief Description of the Drawings

[0028] Figure 1 This is a three-dimensional schematic diagram of an embodiment of the present invention.

[0029] Figure 2 This is a three-dimensional structural schematic diagram of the winding mechanism of an embodiment of the present invention Figure 1 。

[0030] Figure 3 This is a three-dimensional structural schematic diagram of the winding mechanism of an embodiment of the present invention Figure 2 。

[0031] Figure 4 This is a structural schematic diagram of the bag rubbing mechanism of an embodiment of the present invention.

[0032] Figure 5 This is a schematic diagram of the cam structure of the bag rubbing mechanism of an embodiment of the present invention.

[0033] Figure 6 This is a schematic diagram of the outer ring structure of the cam of the bag rubbing mechanism of an embodiment of the present invention.

[0034] Figure 7 This is a three-dimensional structural schematic diagram of the traction mechanism of an embodiment of the present invention

[0035] Figure 8 This is an internal structural schematic diagram of the winding mechanism of an embodiment of the present invention after removing the middle plate on one side

[0036] Figure 9 This is a three-dimensional structural schematic diagram of the heat-sealing mechanism of an embodiment of the present invention.

[0037] Figure 10 This is an internal structural schematic diagram of the heat-sealing mechanism of an embodiment of the present invention after removing the middle plate on one side Figure 1 。

[0038] Figure 11 This is an internal structural schematic diagram of the heat-sealing mechanism of an embodiment of the present invention after removing the middle plate on one side Figure 2 。 Detailed Description of the Invention

[0039] See Figures 1 - 11As shown: A bag-making machine for single-sided open continuous roll bags, including a feeding mechanism 13, intermediate plates 21 oppositely arranged behind the feeding mechanism 13. A heat-sealing mechanism is mounted on the intermediate plates. The heat-sealing mechanism includes a feeding traction roller group 1, a first heat-sealing device 2, a punching device 3, a second heat-sealing device 4, an optoelectronic positioning device 5, a cooling device 6, and a perforating device 7 sequentially mounted on the intermediate plates. It also includes a winding mechanism 8. A bag rubbing mechanism 111 for rubbing open the tear-open side of the continuous roll bag is provided between the perforating device 7 and the winding mechanism 8. The bag rubbing mechanism 111 includes a first roller shaft 1111 and a second roller shaft 1112. A bag passing gap for the continuous roll express bag to pass through is formed between the first roller shaft 1111 and the second roller shaft 1112. One end of the first roller shaft 1111 is provided with a first bag rubbing driving mechanism for driving the first roller shaft 1111 to axially rotate. One end of the second roller shaft 1112 is provided with a second bag rubbing driving mechanism for driving the second roller shaft 1112 to approach or move away from the bag passing gap in a direction perpendicular to the ground. Traction mechanisms 112 are respectively arranged at both ends of the bag rubbing mechanism 111. The first bag rubbing driving mechanism is a first bag rubbing driving motor 1113. One end of the first roller shaft 1111 is provided with a first synchronous pulley (not shown in the figure). One end of the first bag rubbing driving motor 1113 is provided with a second synchronous pulley (not shown in the figure). The first synchronous pulley and the second synchronous pulley rotate synchronously through a synchronous belt (not shown in the figure). One end of the second roller shaft 1112 is provided with a second bag rubbing driving mechanism for driving the second roller shaft 1112 to approach or move away from the bag passing gap in a direction perpendicular to the ground. The second bag rubbing driving mechanism includes a second bag rubbing driving motor 1114 and linkage plates 1115 respectively arranged at both ends of the second roller shaft. A guiding structure is arranged on one side of the linkage plate 1115. The guiding structure includes a slider 1116 fixedly connected to the other end of the second roller shaft 1112 opposite to the linkage plate 1115 and a slide rail 1117 used in cooperation with the slider 1116. The slide rail 1117 is installed on the intermediate plate 21. The other end of the linkage plate 1115 opposite to the second roller shaft 1112 is provided with a cam transmission structure for driving the linkage plate 1115 to slide up and down along the slide rail 1117 through the slider 1116 so as to drive the second roller shaft 1112 to lift. The cam transmission structure is driven by the second bag rubbing driving motor 1114. The cam transmission structure includes a camshaft 1118. The second bag rubbing driving motor 1114 is connected to one end of the camshaft 1118. A cam 1119 is arranged on the camshaft 1118. The cam 1119 is covered with a cam outer ring 11191. The cam outer ring 11191 is connected to the linkage plate 1115 through a connecting device. The connecting device includes a connecting rod 11110. The cam outer ring 11191 is provided with a first connecting portion 111911 for connecting the connecting rod 11110. The linkage plate 1115 is provided with a second connecting portion 11151 connected to the connecting rod 11110. One end of the connecting rod 11110 is connected to the first connecting portion 111911 through a bolt.The other end is connected to the outer spherical surface ball bearing 111101 of the belt-suspended seat and eccentric sleeve through bolts and then connected to the second connecting part 11151 of the linkage plate 1115. The traction mechanism 112 includes a traction driven rubber roller 201 and a traction driving rubber roller 202 disposed below the traction driven rubber roller 201 and in contact with the traction driven rubber roller 201. One end of the traction driving rubber roller 202 is driven by a traction motor 203. The specific driving method is that one end of each of the two traction driving rubber rollers extends out of the intermediate plate to connect to a third synchronous pulley. A fourth synchronous pulley is provided on the traction motor 203. The third and fourth synchronous pulleys rotate synchronously with the traction motor 203 through a synchronous belt. Both ends of the traction driven rubber roller 201 are installed on the intermediate plate 11 through mounting brackets 204. The mounting bracket 204 is provided with an adjusting structure at one end of the traction driven rubber roller 201 away from the traction driving rubber roller 202 for adjusting the pressure between the traction driven rubber roller 201 and the traction driving rubber roller 202. The adjusting structure includes an adjusting rod 205 provided at one end of the mounting bracket 204 away from the traction driven rubber roller 201. The traction driven rubber roller 201 is movably connected to the mounting bracket 204 through an adjusting slider 206. The adjusting rod 205 is threadedly connected to the adjusting slider 206. One end of the adjusting rod 205 facing the traction driven rubber roller 201 is fixedly connected to a pressing plate 207. A compression spring 208 with one end abutted against the pressing plate 207 and the other end abutted against the adjusting slider 206 is disposed between the pressing plate 207 and the adjusting slider 206. A lifting rod 209 is provided on the adjusting slider 206. A pull rod 210 is connected to the lifting rod 209. Opposite sides of the intermediate plate 21 are provided with opposite mounting crossbeams 22. A heat-sealing driving motor (not shown in the figure) is installed on one side of the intermediate plates 21 close to the ground. Multiple sets of linkage structures are spacedly arranged at one end of the mounting crossbeam 22 facing the heat-sealing driving motor. A swing-arm type transmission structure is provided between one set of the linkage structures and the heat-sealing driving motor. The linkage structures drive the mounting crossbeam 22 to reciprocate longitudinally up and down along the intermediate plate 21 through the swing-arm type transmission structure. The linkage structures include multiple transmission rollers 23 spacedly installed by the intermediate plate 21 between the mounting crossbeam 22 and the heat-sealing driving motor. Both ends of the transmission roller 23 are installed with first swing arms 24 fixedly connected to the transmission roller 23. The other end of the first swing arm 24 is provided with a first connecting plate 25 connected to the first swing arms 24 of each of the linkage structures. Second swing arms 26 are also installed at both ends of the transmission roller 23. Both sides of the second swing arms 26 are connected to the mounting crossbeam 22 through oppositely arranged second connecting plates 27. The swing-arm type transmission structure includes a motor disk 28 installed on the heat-sealing driving motor. A first connecting rod 29 is eccentrically installed on the motor disk 28. The other end of the first connecting rod 29 is installed with a third swing arm 210. The third swing arm 210 is fixedly connected to one of the transmission rollers 23. A sliding adjustment mechanism is provided at one end of the mounting crossbeam 22 away from the hot air driving motor. The sliding adjustment mechanism includes a linear guide rail 221 fixedly provided on the mounting crossbeam 22 along the length direction of the mounting crossbeam 22. A plurality of guide sliders 222 are installed on the linear guide rail 221.On the intermediate plate 21, there are relatively arranged racks 211. The lower knife seats of the first heat-sealing device 2, the second heat-sealing device 4, the cooling device 6, and the intermittent device 7 are installed on the racks 211 through gears 212. After the distance of the guiding sliders 222 is adjusted, the lower knife seats can be adjusted to the appropriate positions in the way of gear racks. Below the installation cross beam 22, there are multiple support structures arranged at intervals for supporting the installation cross beam 22. The support structures include support seats 223. A support shaft 224 fixedly connected to the support seat 223 is penetrated in the support seat 223. One end of the support shaft 224 is fixedly connected to the installation cross beam 22. The winding mechanism 8 includes multiple first guiding rollers 81, multiple second guiding rollers 82 arranged in upper and lower layers between the intermediate plates 21, and a winding roller 83 in the same plane as the first guiding roller 81. On one side of the winding roller 83 of the intermediate plate 21, there is a winding roller driving mechanism for driving the axial rotation of the winding roller 83. The winding roller driving mechanism is a winding roller driving motor 84. One end of the winding roller driving motor 84 is connected to the winding roller 83, and a speed reducer 85 is installed at the other end. The winding roller driving motor 84 is installed on the intermediate plate 21 through a motor mounting seat 86.,

Claims

1. A bag-making machine for single-sided open continuous roll bags, comprising a feeding mechanism, intermediate plates oppositely arranged behind the feeding mechanism, a heat-sealing mechanism mounted on the intermediate plates, the heat-sealing mechanism including a feeding and traction roller group, a first heat-sealing device, a punching device, a second heat-sealing device, a photoelectric positioning device, a cooling device, a perforating device sequentially mounted on the intermediate plates, and further including a winding mechanism, characterized in that: A bag rubbing mechanism for unidirectionally rubbing open the tear notch of the continuous roll bag is provided between the point-breaking device and the winding mechanism. The bag rubbing mechanism includes a first roller shaft and a second roller shaft. A bag passing gap for the continuous roll bag to pass through is formed between the first roller shaft and the second roller shaft. One end of the first roller shaft is provided with a first bag rubbing driving mechanism for driving the first roller shaft to rotate axially. One end of the second roller shaft is provided with a second bag rubbing driving mechanism for driving the second roller shaft to approach or move away from the bag passing gap in a direction perpendicular to the ground. Traction mechanisms are respectively provided at both ends of the bag rubbing mechanism. The second bag rubbing driving mechanism includes a second bag rubbing driving motor and linkage plates respectively arranged at both ends of the second roller shaft. A guiding structure is arranged on one side of the linkage plate. A cam transmission structure for driving the linkage plate to slide up and down along the guiding structure so as to drive the second roller shaft to lift is arranged at the other end of the linkage plate opposite to the connection with the second roller shaft. The cam transmission structure is driven by the second bag rubbing driving motor.

2. The bag-making machine for a single-sided open continuous roll bag according to claim 1, characterized in that: The cam transmission structure includes a camshaft. The second bag rubbing driving motor is connected to one end of the camshaft. A cam is arranged on the camshaft. The cam is covered with a cam outer ring. The cam outer ring is connected to the linkage plate through a connecting device.

3. The bag-making machine for a single-sided open continuous roll bag according to claim 2, characterized in that: The connecting device includes a connecting rod. The cam outer ring is provided with a first connecting portion for connecting the connecting rod. The linkage plate is provided with a second connecting portion connected to the connecting rod. One end of the connecting rod is connected to the first connecting portion and the other end is connected to the second connecting portion.

4. The bag-making machine for a single-sided open continuous roll bag according to claim 2 or 3, characterized in that: The guiding structure includes a slider fixedly connected to the other end of the linkage plate opposite to the connection with the second roller shaft and a slide rail used in cooperation with the slider.

5. The bag-making machine for a single-sided open continuous roll bag according to claim 4, characterized in that: The traction mechanism includes a traction driven rubber roller and a traction driving rubber roller arranged below the traction driven rubber roller and in contact with the traction driven rubber roller. One end of the traction driving rubber roller is driven by a traction motor. Both ends of the traction driven rubber roller are installed on an intermediate plate through mounting frames. The mounting frame is provided with an adjusting structure for adjusting the pressure between the traction driven rubber roller and the traction driving rubber roller at the end of the traction driven rubber roller far from the traction driving rubber roller.

6. The bag-making machine for a single-sided open continuous roll bag according to claim 5, characterized in that: The first heat sealing device, the second heat sealing device, the cooling device, and the point-breaking device all include an upper knife seat and a lower knife seat. The lower knife seat is mounted on the intermediate plate. A heat sealing driving mechanism for simultaneously driving the upper knife seats of the first heat sealing device, the second heat sealing device, the cooling device, and the point-breaking device to reciprocate up and down and fit with the lower knife seat is arranged below the intermediate plate.

7. The bag-making machine for a single-sided open continuous roll bag according to claim 6, characterized in that: The heat sealing driving mechanism includes mounting cross beams arranged oppositely on one side of the intermediate plate facing each other. A heat sealing driving motor is installed on one side of the intermediate plates close to the ground. A plurality of groups of linkage structures are arranged at intervals at one end of the mounting cross beam facing the heat sealing driving motor. A swing arm type transmission structure is arranged between one group of the linkage structures and the heat sealing driving motor. The linkage structures are linked through the swing arm type transmission structure to drive the mounting cross beam to reciprocate up and down longitudinally along the intermediate plate.

8. The bag-making machine for a single-sided open continuous roll bag according to claim 7, characterized in that: The linkage structure includes a plurality of drive rollers installed at intervals between the intermediate plate, the installation cross beam and the heat sealing drive motor. Both ends of each drive roller are installed with first swing arms fixedly connected to the drive roller. The other end of the first swing arm is provided with a first connecting plate connected to the first swing arms of each linkage structure. Both ends of the drive roller are also installed with second swing arms. Both sides of the second swing arm are connected to the installation cross beam through relatively arranged second connecting plates. The swing arm type drive structure includes a motor disk installed on the heat sealing drive motor. A first connecting rod is eccentrically installed on the motor disk. The other end of the first connecting rod is installed with a third swing arm, and the third swing arm is fixedly connected to one of the drive rollers.

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