A paper tube forming machine

Abstract

This invention discloses a paper tube forming machine, comprising a paper roll assembly, an automatic paper receiving assembly, a paper picking and slitting assembly, a material storage and tensioning assembly, a first adjusting assembly, a splicing and gluing assembly, a second adjusting assembly, and a splicing and bonding assembly arranged sequentially along the paper belt conveying direction. The paper roll assembly includes two radially symmetrical paper roll stations on a rotating disk. One paper roll station holds an old paper roll to supply the old paper belt to the automatic paper receiving assembly, while the other paper roll station holds a new paper roll. When the old paper roll is nearly exhausted, the new paper belt is supplied to the automatic paper receiving assembly. The automatic paper receiving assembly is used for splicing and changing the old and new paper belts. The paper picking and slitting assembly provides the power to pick up the paper belt from the paper roll assembly and slits the paper belt in the middle into a first paper belt and a second paper belt. The material storage and tensioning assembly stores and tensions the first and second paper belts. This forming machine can achieve the forming of paper tubes with larger wall thicknesses using relatively thick paper belts as raw materials, enabling continuous automated production.

Description

Technical Field

[0001] This invention relates to the field of tobacco production equipment, and more specifically to a paper tube forming machine. Background Technology

[0002] The paper tube forming machine is used to produce the paper tube portion of hollow composite base rods or countersunk base rods. Unlike the forming paper used in conventional cigarettes, the paper tube has a wall thickness of approximately 0.35 mm, significantly thicker than conventional forming paper. When producing paper tubes using this thicker paper as raw material, a series of new technical problems arise due to the paper's thickness. Conventional processes and conventional cigarette paper tube forming equipment are no longer applicable. Therefore, it is necessary to provide a new paper tube forming machine suitable for producing this specific type of paper tube, in order to produce hollow composite base rods and countersunk base rods that meet the requirements. Summary of the Invention

[0003] The purpose of this invention is to provide a paper tube forming machine to solve the above-mentioned technical problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A paper tube forming machine includes a paper roll assembly, an automatic paper receiving assembly, a paper picking and cutting assembly, a material storage and tensioning assembly, a first adjusting assembly, a splicing and gluing assembly, a second adjusting assembly, and a splicing and bonding assembly arranged sequentially along the paper belt conveying direction. The paper roll assembly includes two radially symmetrical paper roll stations on a rotating disk. One paper roll station holds an old paper roll to provide old paper belt to the automatic paper receiving assembly, and the other paper roll station holds a new paper roll, providing new paper belt to the automatic paper receiving assembly when the old paper roll is nearly used up. The automatic paper splicing assembly is used for splicing and changing rolls of new and old paper tapes. The paper picking and cutting assembly is used to provide power to pick up paper tape from the paper tray assembly and cut the paper tape into a first paper tape and a second paper tape from the middle. The material storage and tensioning assembly is used to store and tension the first and second paper tapes. The splicing glue application assembly and splicing bonding assembly are used to apply glue to the first and second paper tapes and overlap and bond them. The first adjustment assembly and the second adjustment assembly are used to adjust the position of the paper tapes before applying glue and before overlapping and bonding, respectively.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] In some embodiments, it includes a translational locking and positioning mechanism and a lifting and pressing cutting mechanism. The translational locking and positioning mechanism includes a positioning plate, a translational cylinder, and a paper pressing pad. The positioning plate is located directly below the paper pressing pad on the left side. The translational cylinder can drive the positioning plate to move horizontally in the front-back direction. After the positioning plate extends forward, it forms a locking slot with the paper pressing pad for the new paper tape to be locked and positioned. The left end of the new paper tape is located directly below the paper pressing pad and has an adhesive section. The lifting and pressing cutting mechanism includes a paper pressure plate, a cutting knife, and a lifting cylinder. The paper pressure plate is located directly below the paper pressing pad on the right side. The old paper tape passes directly below the positioning plate and passes to the right through the gap between the paper pressing pad and the paper pressure plate. The lifting cylinder can drive the paper pressure plate to move upward to lift the old paper tape and press it against the adhesive section of the new paper tape. During the process of the paper pressure plate contacting the old paper tape with the new paper tape and pressing it tightly, the cutting knife moves to the left and finally breaks through and cuts the old paper tape.

[0008] The beneficial effect of adopting the above-mentioned further solution is that the automatic paper splicing assembly uses the lifting, pressing and cutting action of the lifting, pressing and cutting mechanism to automatically bond the adhesive section (the part with glue on the lower surface of the free end or the direct adhesion of single-sided transparent tape) of the new paper tape to the old paper tape below, and almost simultaneously cuts the old paper tape on the paper feeding side near the bonding point, thus achieving automatic paper splicing; during paper splicing, there will be no waste of a long section of free end paper tape due to the need to speed up the new paper tape to match the speed of the old paper tape, making paper splicing convenient and almost wasteless.

[0009] Furthermore, it also includes a fixed base plate and a movable base plate, both vertically arranged. The rear wall of the fixed base plate is equipped with the translation cylinder via a horizontal first seat plate. The fixed base plate has a through hole for the positioning tray to pass through. The telescopic end of the front side of the translation cylinder is fixedly connected to the rear end of the positioning tray. The movable base plate is slidably connected to the vertical slide rail on the front side of the fixed base plate via a slider. The lifting cylinder is installed above the front side of the fixed base plate via a horizontal second seat plate. The telescopic end of the lifting cylinder passes through the rear part of the second seat plate and connects to the movable base plate below. The paper pressing pad is fixed on the lower surface of the front part of the second seat plate. A cutter sliding seat plate is rotatably connected to the front wall of the movable base plate. The paper pressing plate is disposed on the cutter sliding seat plate.

[0010] The beneficial effect of adopting the above-mentioned further solution is that by setting a fixed base plate, it is convenient to install the moving base plate, the translation and locking positioning mechanism and the lifting and pressing cutting mechanism, and it is also convenient to fix the entire paper receiving assembly onto the larger mounting base plate of the paper tube forming machine.

[0011] In some embodiments, the right side of the cutter sliding seat plate is rotatably connected to the movable base plate via a bearing, and the lower left side is hinged to the upper end of a lifting push rod via a pin. The lower end of the lifting push rod is inserted into a limiting hole of a spring seat provided on the front wall of the movable base plate. The inner diameter of the limiting hole is larger than the outer diameter of the lifting push rod. A push spring is sleeved on the lifting push rod. The lower end of the push spring abuts against the spring seat, and the upper end abuts against the pin. The upper edge of the paper pressure plate is flush with the upper left edge of the cutter sliding seat plate. The cutting blade is fixed below the left end of the paper pressure plate and the blade protrudes to the left. The push spring keeps the cutter sliding seat plate, the paper pressure plate, and the cutting blade tilted to the upper left before pressing down the paper pressing pad.

[0012] The beneficial effect of adopting the above-mentioned further solution is that the right side of the cutter sliding seat plate is rotatably connected to the moving base plate, and the left side is tilted to the upper left, that is, the left side is slightly higher than the right side. In this way, when the moving base plate moves up, the left side of the paper pressure plate on the cutter sliding seat plate first contacts the paper pressing pad. After being pressed, the cutter sliding seat plate rotates around the bearing until it rotates to the horizontal and parallel to the paper pressing pad, thus realizing the bonding of new and old paper.

[0013] In some embodiments, the paper pressure plate is connected to the cutter sliding seat plate via a sliding swing mechanism. The swing sliding mechanism includes a sliding plate, a movable swing rod, and a swing rod seat. The front wall of the cutter sliding seat plate is provided with left and right slide rails. The sliding plate is slidably connected to the left and right slide rails. The upper edge of the sliding plate is fixedly connected to the bottom wall of the paper pressure plate. The swing rod seat is fixed to the lower right side of the front wall of the movable base plate. The middle part of the front wall of the sliding plate is hinged to the swing rod seat via the movable swing rod.

[0014] The beneficial effect of adopting the above-mentioned further solution is that when the cutter sliding seat plate rotates around the bearing component, the sliding plate is limited by the moving rocker arm that is hinged to the moving base plate below. While rotating, it will move slightly to the left so that the protruding cutting blade is pressed against the old paper and finally cuts the old paper strip.

[0015] In some embodiments, an auxiliary paper pressing mechanism is provided on the left side of the front wall of the movable substrate. The auxiliary paper pressing mechanism is located directly below the front end of the positioning tray in the extended state. When the lifting cylinder drives the movable substrate to move upward so that the paper pressing plate presses the paper pressing pad, the auxiliary paper pressing mechanism presses the old paper strip onto the lower surface of the positioning tray.

[0016] The beneficial effect of adopting the above-mentioned further solution is that the auxiliary paper pressing mechanism of the above structure is simple in structure. If the paper tape on the left side of the cut-off point is not pressed and fixed when the cutting knife cuts the old paper tape, it cannot be cut effectively. The auxiliary paper pressing mechanism can achieve this function well.

[0017] In some embodiments, the paper feeding and slitting assembly includes a paper feeding roller, a cutting roller, a left pressure roller, and a right pressure roller. The cutting roller is directly above the paper feeding roller, and the left and right pressure rollers are respectively located on the left and right sides. An annular cutter is fixed on the cutting roller, and an annular groove corresponding to the cutter is provided in the middle of the paper feeding roller. The paper feeding roller and the cutting roller are driven to rotate by a first motor and a second motor, respectively. The left and right pressure rollers can press the paper strip to be slit on the upper left and upper right sides of the paper feeding roller, respectively. The assembly also includes a pressing and slitting adjustment mechanism, which can drive the cutting roller, the left pressure roller, and the right pressure roller to move closer to or away from the paper feeding roller.

[0018] The beneficial effects of adopting the above-mentioned further solution are that, through the cooperation of the paper take-up roller, the cutting roller, and the left and right pressure rollers, the thicker paper strip is pressed and conveyed to the left and right sides at the slitting point. At the same time, while the paper strip is pressed and conveyed from the left and right sides, it is divided into two parts from the middle of the width direction of the paper strip, so as to facilitate the subsequent overlapping and bonding of the two paper strips and the final paper tube forming. The pressing and slitting adjustment mechanism can realize the functions of adjusting the pressing force of the paper strip and determining whether to slitting while conveying and taking paper. It has a compact structure, good adjustability, and is easy to use.

[0019] In some embodiments, the device further includes a vertically arranged fixed plate, with slide rails fixed on the left and right sides of the front of the fixed plate and the first motor fixed on the back. The paper-taking roller is located at the lower part of the front of the fixed plate. The pressing and cutting adjustment mechanism includes a vertically arranged lifting adjustment plate, which is slidably connected to the slide rails. The lifting adjustment plate is driven to move up and down along the slide rails by a telescopic device. The cutting roller, the left pressure roller, and the right pressure roller are located on the front of the lifting adjustment plate, and the second motor is fixed on the lifting adjustment plate.

[0020] The beneficial effect of adopting the above-mentioned further solution is that the setting of the fixed plate and the lifting adjustment plate can better realize the installation of the paper feeding roller, the cutting roller, the left and right pressure rollers and the pressing and slitting adjustment mechanism.

[0021] In some embodiments, the material tensioning assembly includes a fixed roller group and a lifting roller group. The lifting roller group is fixed to the front wall of a vertically arranged sliding table, and the rear wall of the sliding table is slidably connected to a vertically arranged first slide rail. The fixed roller group is located directly above the sliding table and maintains a fixed position relative to the sliding table. The fixed roller group includes an upper fixed roller and a lower fixed roller, and the lifting roller group includes an upper lifting roller and a lower lifting roller. A first paper strip passes over the rollers of the upper fixed roller and the upper lifting roller in a zigzag pattern. A second paper strip passes over the rollers of the lower fixed roller and the lower lifting roller in a zigzag pattern. The first paper strip and the second paper strip can drive the sliding table to move up and down along the first slide rail.

[0022] The beneficial effects of adopting the above-mentioned further solution are that, by cooperating with the fixed roller group and the lifting roller group, the paper tape passing through the storage tensioning component can be distributed in a zigzag reciprocating multiple-track state to achieve paper tape buffering and tensioning. When the incoming side needs to stop to replace the paper tape, the outgoing side can still continue to take the buffered paper tape from the storage tensioning component. As the lifting roller group rises and approaches the fixed roller group, the buffered paper tape gradually decreases. When the incoming side has finished replacing the paper and feeding is completed, the lifting roller group will descend and move away from the fixed roller group to achieve automatic paper tape buffering. In addition, the paper tape tension can be adjusted by adjusting the counterweight of the sliding table.

[0023] In some embodiments, the first adjustment component and the second adjustment component have the same structure, both including a mounting base plate, a paper tape limiting adjustment plate, and an adjustment handwheel. One side of the mounting base plate is fixed to the back plate of the frame. The paper tape limiting adjustment plate is slidably connected to the mounting base plate. The front end and the middle part of the limiting adjustment plate are respectively fixed with downwardly extending adjustment ears. The adjustment handwheel is fixedly connected to the front end of a screw. The middle part of the mounting base plate is provided with a through groove extending forward and backward for the middle adjusting ear plate to pass through. The two adjusting ears are respectively provided with mounting holes. The front end of the screw is rotatably connected to the mounting hole of the front adjusting ear plate and is axially positioned. The other end of the screw is threadedly connected to the mounting hole of the middle adjusting ear plate. Turning the adjustment handwheel can drive the paper tape limiting adjustment plate to move back and forth. The upper surface of the limiting adjustment plate is provided with a paper limiting groove.

[0024] The beneficial effect of adopting the above-mentioned further solution is that the first and second adjustment components can adjust and move the position of the paper tape before applying glue and overlapping bonding, so as to better complete the glue application and bonding.

[0025] The beneficial effects of the paper tube forming machine provided in this application include, but are not limited to:

[0026] The forming machine provided by this invention can form paper tubes with large wall thickness using thick paper tape as raw material, and can realize continuous automated production. It includes components such as new and old paper tape changing, automatic paper splicing, paper picking and cutting, material storage tensioning, glue adjustment and splicing bonding. When changing the paper tape, the paper tape before the material storage tensioning component is kept stationary so as not to waste paper tape when the new and old paper tapes are spliced. At this time, the paper tapes taken by the components after the material storage tensioning component are temporarily taken from the material storage tensioning component. The material storage tensioning component plays the role of storing material, keeping constant and adjusting paper tension.

[0027] The paper feeding and cutting component can perform the basic function of feeding and cutting paper from the paper tray component, and can also stop feeding paper and press and position it to ensure that the automatic paper receiving component can better perform its paper receiving function. Attached Figure Description

[0028] Figure 1 An isometric view of a paper tube forming machine provided by the present invention;

[0029] Figure 2 for Figure 1 The front view of the paper tube forming process is shown.

[0030] Figure 3 for Figure 1 The image shows an isometric view of the automatic paper receiving assembly of the paper tube forming machine.

[0031] Figure 4 for Figure 3 The main view of the paper splicing component is shown below;

[0032] Figure 5 for Figure 3 Left view of the paper receiving assembly shown;

[0033] Figure 6 for Figure 3 Top view of the paper splicing assembly shown;

[0034] Figure 7 for Figure 3 Axonometric view of the translational locking and positioning mechanism in the paper receiving assembly shown;

[0035] Figure 8 for Figure 3 Axonometric view of the fixed and movable base plates and the first and second base plates after assembly;

[0036] Figure 9 for Figure 8 Left view of the assembly structure shown;

[0037] Figure 10 An isometric view of the lifting, pressing, and cutting mechanism (lifting cylinder not shown);

[0038] Figure 11 for Figure 10 The front view of the mechanism shown;

[0039] Figure 12 for Figure 10 Top view of the mechanism shown.

[0040] Figure 13 An isometric view of the paper feeding and cutting assembly;

[0041] Figure 14 This is the main view of the paper feeding and cutting component;

[0042] Figure 15 Left view of the paper feeding and cutting component;

[0043] Figure 16 Top view of the paper feeding and cutting assembly;

[0044] Figure 17 A schematic diagram of a material storage tensioning assembly for a paper tube forming machine provided by the present invention;

[0045] Figure 18 for Figure 17 The isometric view of the material tensioning assembly shown does not display the fixed roller group;

[0046] Figure 19 for Figure 18 Right view of the material tensioning assembly shown;

[0047] Figure 20 for Figure 18 The front view of the material tensioning assembly is shown.

[0048] Figure 21 for Figure 18 Top view of the material tensioning assembly shown;

[0049] Figure 22 An isometric view of the first or second adjustment component;

[0050] Figure 23 for Figure 22 The right view of the adjustment component shown.

[0051] The attached diagram lists the components represented by each number as follows:

[0052] 100. Paper tray assembly; 200. Automatic paper receiving assembly; 300. Paper picking and cutting assembly; 400. Material storage and tensioning assembly; 500. First adjustment assembly; 600. Splicing and gluing assembly; 700. Second adjustment assembly; 800. Splicing and bonding assembly;

[0053] 201. Positioning tray; 202. Translation cylinder; 203. Paper pressing pad; 204. Paper pressing plate; 205. Cutting knife; 206. Lifting cylinder; 207. Fixed base plate; 208. Moving base plate; 209. First seat plate; 210. Vertical slide rail; 211. Second seat plate; 212. Cutting knife sliding seat plate; 213. Front and rear slide rail; 214. Bearing component; 215. Lifting push rod; 216. Spring seat; 217. Push spring; 218. Sliding plate; 219. Moving swing rod; 220. Swing rod seat; 221. Left and right slide rail; 222. Spring sleeve; 223. Auxiliary paper pressing rod; 224. Paper guide wheel; 225. Lifting sliding seat; 226. Clearance groove;

[0054] 301. Paper feed roller; 302. Cutting roller; 303. Left pressure roller; 304. Right pressure roller; 305. Cutter; 306. Annular knife groove; 307. First motor; 308. Second motor; 309. Fixing plate; 310. Lifting adjustment plate; 311. Clearance slot; 312. Left connecting arm; 313. Right connecting arm; 314. Connecting seat; 315. Left adjusting seat; 316. Right adjusting seat;

[0055] 401. Sliding table; 402. First slide rail; 403. Upper fixed roller; 404. Lower fixed roller; 405. Upper lifting roller; 406. Lower lifting roller; 407. First paper tape; 408. Second paper tape; 409. Mounting base; 410. Counterweight sliding block; 411. Second slide rail; 412. Fixed pulley; 413. Rope ring; 414. Limiting block.

[0056] 501. Install the base plate; 502. Paper tape limit adjustment plate; 503. Adjust the handwheel; 504. Adjust the ear plate. Detailed Implementation

[0057] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, of the embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0058] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0059] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0060] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0061] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or display that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or display.

[0062] The following will combine Figure 1-23 This application provides a detailed description of a paper tube forming machine according to its embodiments. It is worth noting that the following embodiments are merely illustrative of this application and do not constitute a limitation thereof.

[0063] In the embodiments of this application, such as Figures 1 to 23 As shown, the present invention provides a paper tube forming machine, which may include a paper roll assembly 100, an automatic paper receiving assembly 200, a paper picking and cutting assembly 300, a material storage tensioning assembly 400, a first adjusting assembly 500, a splicing and gluing assembly 600, a second adjusting assembly 700, and a splicing and bonding assembly 800 arranged sequentially along the paper belt conveying direction. The paper roll assembly 100 includes two radially symmetrical paper roll stations disposed on a rotating disk. One paper roll station holds an old paper roll to provide old paper belt to the automatic paper receiving assembly 200, and the other paper roll station holds a new paper roll to provide new paper to the automatic paper receiving assembly 200 when the old paper roll is nearly used up. The automatic paper splicing assembly 200 is used for splicing and changing rolls of new and old paper tapes. The paper picking and cutting assembly 300 is used to provide power to pick up the paper tape from the paper tray assembly 100 and cut the paper tape from the middle into a first paper tape 407 and a second paper tape 408. The material storage and tensioning assembly 400 is used to store and tension the first paper tape 407 and the second paper tape 408. The splicing glue application assembly 600 and the splicing bonding assembly 800 are used to apply glue to the first paper tape 407 and the second paper tape 408 and to overlap and bond them. The first adjustment assembly 500 and the second adjustment assembly 700 are used to adjust the position of the paper tape before applying glue and before overlapping and bonding, respectively.

[0064] In one embodiment of the present invention, the automatic paper splicing assembly includes a translational locking and positioning mechanism and a lifting and pressing cutting mechanism. The translational locking and positioning mechanism includes a positioning plate 201, a translational cylinder 202, and a paper pressing pad 203. The positioning plate 201 is located directly below the paper pressing pad 203 on the left side. The translational cylinder 202 can drive the positioning plate 201 to move horizontally in the front-back direction. After the positioning plate 201 extends forward, it forms a locking slot with the paper pressing pad 203 for the new paper tape to be inserted and positioned. The left end of the new paper tape is located directly below the paper pressing pad 203 and has an adhesive section. The lifting, pressing, and cutting mechanism includes a paper pressure plate 204, a cutting blade 205, and a lifting cylinder 206. The paper pressure plate 204 is located directly below and to the right of the paper pressing pad 203. The old paper strip passes directly below the positioning plate 201 and passes to the right through the gap between the paper pressing pad 203 and the paper pressure plate 204. The lifting cylinder 206 can drive the paper pressure plate 204 to move upward to lift the old paper strip and press it against the adhesive section of the new paper strip. During the process of the paper pressure plate 204 making the old paper strip contact the new paper strip and press it tightly to bond, the cutting blade 205 moves to the left and finally breaks through and cuts the old paper strip.

[0065] It should be noted that the terms "translation cylinder" and "lifting cylinder" in this invention should be interpreted broadly, including cylinders powered by compressed gas, as well as common mechanical components that achieve telescopic movements, such as electric cylinders or hydraulic cylinders powered by electricity or liquid pressure. The adhesive section can be a section of paper tape manually coated with glue on the bottom surface of the free end of a new paper tape, or a section of transparent adhesive tape directly adhered to the free end, with the adhesive side of the tape facing down.

[0066] In one embodiment of the present invention, a fixed base plate 207 and a movable base plate 208, both vertically arranged, are further included. The rear wall of the fixed base plate 207 is fitted with the translation cylinder 202 via a horizontal first base plate 209. The fixed base plate 207 has a through hole for the positioning support plate 201 to pass through. The telescopic end of the front side of the translation cylinder 202 is fixedly connected to the rear end of the positioning support plate 201. The movable base plate 208 is connected to the vertical slide rail 21 on the front side of the fixed base plate 207 via a slider. The fixed base plate 207 is mounted on a horizontal second seat plate 211 above the front side of the fixed base plate 207. The extension end of the lifting cylinder 206 passes through the rear part of the second seat plate 211 and is connected to the lower movable base plate 208. The paper pressing pad 203 is fixed on the lower front surface of the second seat plate 211. The cutter sliding seat plate 212 is rotatably connected to the front wall of the movable base plate 208. The paper pressing plate 204 is disposed on the cutter sliding seat plate 212.

[0067] In one embodiment of the present invention, the lower surface of the second base plate 211 is provided with a front-to-back slide rail 213, and the positioning plate 201 slides in cooperation with the front-to-back slide rail 213 through a slider fixed on the upper surface.

[0068] Understandably, the slider is fixed to the positioning plate, and the number of front and rear slide rails can be one or two.

[0069] In one embodiment of the present invention, the right side of the cutter sliding seat plate 212 is rotatably connected to the movable base plate 208 via a bearing 214, and the lower left side is hinged to the upper end of a lifting push rod 215 via a pin. The lower end of the lifting push rod 215 is inserted into a limiting hole of a spring seat 216 provided on the front wall of the movable base plate 208. The inner diameter of the limiting hole is larger than the outer diameter of the lifting push rod 215. A push spring 217 is sleeved on the lifting push rod 215. The lower end of the push spring 217 abuts against the spring seat 216, and the upper end abuts against the pin. The upper edge of the paper pressure plate 204 is flush with the upper left edge of the cutter sliding seat plate 212. The cutting blade 205 is fixed below the left end of the paper pressure plate 204 and the blade protrudes to the left. The push spring 217 keeps the cutter sliding seat plate 212, the paper pressure plate 204 and the cutting blade 205 together tilted to the upper left before pressing the paper pressing pad 203.

[0070] It should be noted that a square sleeve with a hinged interface can be provided at the upper end of the lifting push rod. The sleeve opening faces downward and is fixedly connected to the upper end of the lifting push rod. The push spring is sleeved on the lifting push rod, and the upper end abuts against the inner top wall of the square sleeve. The cutter sliding seat plate 12, paper pressure plate 4, and cutting blade 5 together maintain a state of tilting to the upper left before pressing the paper pressing pad 3. This tilt angle is small, generally controlled within 10 degrees, with the left side higher than the right side.

[0071] In one embodiment of the present invention, the paper pressure plate 204 is connected to the cutter sliding seat plate 212 via a sliding swing mechanism. The swing sliding mechanism includes a sliding plate 218, a movable swing rod 219, and a swing rod seat 220. The cutter sliding seat plate 212 is provided with a left-right slide rail 221 on its front wall. The sliding plate 218 is slidably connected to the left-right slide rail 221. The upper edge of the sliding plate 218 is fixedly connected to the bottom wall of the paper pressure plate 204. The swing rod seat 220 is fixed to the lower right side of the front wall of the movable base plate 208. The middle part of the front wall of the sliding plate 218 is hinged to the swing rod seat 220 via the movable swing rod 219.

[0072] In one embodiment of the present invention, an auxiliary paper pressing mechanism is provided on the left side of the front wall of the movable substrate 208. The auxiliary paper pressing mechanism is located directly below the front end of the positioning tray 201 in the extended state. When the lifting cylinder 206 drives the movable substrate 208 to move upward so that the paper pressing plate 204 presses the paper pressing pad 203, the auxiliary paper pressing mechanism presses the old paper strip onto the lower surface of the positioning tray 201.

[0073] In one embodiment of the present invention, the auxiliary paper pressing mechanism includes a spring sleeve 222, which contains a plurality of compression springs. The compression springs are connected to the auxiliary paper pressing rod 223. The auxiliary paper pressing mechanism presses the old paper strip with the upper end face of the auxiliary paper pressing rod 223 and the compression springs are in a compressed state.

[0074] In one embodiment of the present invention, two paper guide wheels 224 are provided on each of the left and right sides of the front wall of the fixed base plate 207, and the paper guide wheels 224 on the left and right sides are symmetrically arranged (the two paper guide wheels on the right side are not fully shown in the figure).

[0075] In one embodiment of the present invention, the vertical slide rail 210 is fixed to the front wall of the fixed base plate 207 by a lifting sliding seat 225.

[0076] In one embodiment of the present invention, the front end of the positioning plate 201 is provided with a relief groove 226 that cooperates with the cutting blade 205.

[0077] In one embodiment of the present invention, the paper taking and cutting assembly 300 includes a paper taking roller 301, a cutting roller 302, a left pressure roller 303, and a right pressure roller 304. The cutting roller 302 is directly above the paper taking roller 301, and the left and right pressure rollers 303 and 304 are respectively on the left and right sides. An annular cutter 305 is fixed on the cutting roller 302. An annular groove 306 corresponding to the cutter 305 is provided in the middle of the paper taking roller 301. The paper taking roller 301 and the cutting roller 302 are driven to rotate by a first motor 307 and a second motor 308, respectively. The left pressure roller 303 and the right pressure roller 304 can press the paper strip to be cut on the upper left and upper right sides of the paper taking roller 301, respectively. The assembly also includes a pressing and cutting adjustment mechanism, which can drive the cutting roller 302, the left pressure roller 303, and the right pressure roller 304 to move closer to or away from the paper taking roller 301.

[0078] It should be noted that the cutter sleeve is fixed on the cutting roller, and the groove depth of the annular cutter groove is about 5-10mm. Both the first motor and the second motor can directly drive the corresponding paper feeding roller and cutting roller to rotate, or they can be driven indirectly through the transmission mechanism. When the second motor is installed on the front, its output end is fixedly connected to the drive wheel on the back. There is a driven wheel below the drive wheel, and the two are connected by synchronous belt transmission. The driven wheel is coaxially fixedly connected to the cutting roller on the front through a coupling device.

[0079] In one embodiment of the present invention, a vertically arranged fixing plate 309 is further included. Slide rails are fixed on the left and right sides of the front of the fixing plate 309, and the first motor 307 is fixed on the back. The paper picking roller 301 is located at the lower part of the front of the fixing plate 309. The pressing and cutting adjustment mechanism includes a vertically arranged lifting adjustment plate 310. The lifting adjustment plate 310 is slidably connected to the slide rails. The lifting adjustment plate 310 is driven to rise and fall along the slide rails by a telescopic device. The cutting roller 302, the left pressure roller 303, and the right pressure roller 304 are arranged on the front of the lifting adjustment plate 310. The second motor 308 is fixed on the lifting adjustment plate 310.

[0080] It should be noted that the telescopic device is a cylinder or electric cylinder located above the fixed plate 309. The fixed plate 309 is provided with a clearance hole 311 with the long shaft running vertically. The second motor 308 is located on the front or back of the lifting adjustment plate 310. The clearance hole 311 is for the second motor 308 to make way or for the drive wheel of the second motor 308 to make way.

[0081] It is understood that the telescopic device can also be fixed to the overall frame, and the telescopic device is preferably located directly above the fixed plate and the lifting adjustment plate. The telescopic device is not shown in the figure.

[0082] In one embodiment of the present invention, a pressure roller fine-tuning mechanism is further included. The pressure roller fine-tuning mechanism includes a left connecting arm 312 and a right connecting arm 313, both of which are arc-shaped and opposite to each other. The lower ends of the left connecting arm 312 and the right connecting arm 313 are rotatably connected to the left pressure roller 303 and the right pressure roller 304, respectively, and the upper ends are rotatably connected to the lower left and right sides of the connecting seat 314, respectively. The connecting seat 314 is fixed to the front of the lifting adjustment plate 310. An angle adjustment part is provided in the middle of the left connecting arm 312 and the right connecting arm 313. The angle adjustment part can make the upper ends of the left connecting arm 312 and the right connecting arm 313 rotate around the connecting seat 314 to adjust an angle and then position them.

[0083] It should be noted that the pressure roller fine-tuning mechanism is not limited to the above structure. For example, the left and right connecting arms can be in the shape of a broken line rather than an arc. In addition to being connected to the middle of the left and right connecting arms, the angle adjustment part can also be connected to other positions.

[0084] In one embodiment of the present invention, each of the angle adjustment parts includes a left adjustment seat 315 and a right adjustment seat 316, and an adjustment screw is threadedly connected to the left adjustment seat 315 and the right adjustment seat 316 respectively, and the adjustment screw extends in the left-right direction.

[0085] Understandably, only one left and right adjustment seat can be provided. In this case, the end of the adjustment screw furthest from the adjustment seat should be rotatably connected to the corresponding left or right connecting arm, and the adjustment seat should also be hinged to the lifting adjustment plate. When the included angle between the left and right connecting arms is adjusted to a smaller value, the corresponding left and right pressure rollers at their lower ends can still press the paper tape, but the cutter of the cutting roller may no longer be able to contact the paper tape. At this time, it is possible to only feed the paper tape without cutting it.

[0086] In one embodiment of the present invention, the bottom left and right sides of the connecting seat 314 are provided with arc-shaped grooves, and the left connecting arm 312 and the right connecting arm 313 respectively extend into the arc-shaped grooves and are rotatably connected to the pins in the grooves.

[0087] In one embodiment of the present invention, the material tensioning assembly 400 includes a fixed roller group and a lifting roller group. The lifting roller group is fixed on the front wall of a vertically arranged sliding table 401. The rear wall of the sliding table 401 is slidably connected to a vertically arranged first slide rail 402. The fixed roller group is located directly above the sliding table 401 and maintains a fixed position relative to the sliding table 401. The fixed roller group includes an upper fixed roller 403 and a lower fixed roller 404. The lifting roller group includes an upper lifting roller 405 and a lower lifting roller 406. A first paper strip 407 passes over the rollers of the upper fixed roller 403 and the upper lifting roller 405 in a zigzag pattern. A second paper strip 408 passes over the rollers of the lower fixed roller 404 and the lower lifting roller 406 in a zigzag pattern. The first paper strip 407 and the second paper strip 408 can drive the sliding table 401 to move up and down along the first slide rail 402.

[0088] It should be noted that during paper tube forming, the first and second paper strips need to be staggered at an angle before being bonded together, with one on the outside and the other on the inside. After the overlap on one side is bonded, it is rolled into a tube shape inside the smoke gun (a filter rod can be inserted beforehand), and then bonded on the other side to complete the paper tube forming (hollow composite base rod or countersunk base rod). It can be seen that during production, the first and second paper strips need to be fed synchronously to the subsequent gluing, bonding and smoke gun forming sections. When completing the gluing and bonding, the paper strips need to have a certain tension, and production needs to be uninterrupted to ensure production efficiency. Therefore, a material storage tensioning component is needed to achieve the above functions.

[0089] In one embodiment of the present invention, the fixed roller group is fixed to the back plate of the frame, the first slide rail 402 is fixed to the front wall of the mounting base 409, and the rear wall of the mounting base 409 is fixed to the back plate of the frame.

[0090] It should be noted that the mounting base consists of a mounting plate and connecting plates extending rearward from both sides of the rear wall of the mounting plate, and a first slide rail is fixed on the front wall of the mounting plate.

[0091] In one embodiment of the present invention, the upper fixed roller 403 and the lower fixed roller 404 are each composed of three rollers that are spaced apart and correspond to each other, and the upper lifting roller 405 and the lower lifting roller 406 are each composed of two rollers that are spaced apart and correspond to each other. The rollers of the fixed roller group and the rollers of the lifting roller group are staggered in the vertical direction.

[0092] It is understood that the number of fixed rollers in the upper and lower layers is not limited to three; it can be five, seven, or more (an odd number). Similarly, the number of lifting rollers in the upper and lower layers is not limited to two; it can be four, six, or more (an even number). A larger number of rollers results in more folds in the paper tape, allowing for greater storage capacity. Furthermore, the number of rollers in the fixed roller group and the lifting roller group can be interchanged if necessary, meaning the former has an even number, while the latter has an odd number. This should also be included within the scope of this invention.

[0093] In one embodiment of the present invention, a counterweight sliding mechanism is further included. The counterweight sliding mechanism includes a counterweight sliding block 410, a second slide rail 411, a pull rope, and a fixed pulley 412. The second slide rail 411 and the fixed pulley 412 are both disposed on the left or right side wall of the mounting base 409. The counterweight sliding block 410 is slidably connected to the second slide rail 411. One end of the pull rope is fixed to the sliding platform 41, and the other end passes around the fixed pulley 412 and is fixedly connected to the counterweight sliding block 410.

[0094] It should be noted that the second slide rail can be installed on the connecting plate of the mounting base. When there is one fixed pulley, it is preferably set on the upper part of one side of the mounting plate. At this time, after the pull rope connects the counterweight sliding block and the sliding table, the counterweight sliding block plays a role in reducing weight, that is, avoiding the problem of excessive paper tape tension caused by the excessive weight of the sliding table and its rollers.

[0095] Understandably, threaded holes or other connecting parts can be provided on the sliding table surface and the counterweight sliding block surface as needed, so as to select and connect a counterweight block of appropriate weight when necessary, and achieve more flexible tension adjustment.

[0096] In one embodiment of the present invention, both the sliding table 401 and the counterweight sliding block 410 are provided with a rope loop 413 for connecting the pull rope on one side.

[0097] In one embodiment of the present invention, two fixed pulleys 412 are provided, one fixed to the upper end of the side wall of the mounting base 409 and the other fixed to the lower end of the side wall of the mounting base 409.

[0098] In one embodiment of the present invention, the upper and lower ends of the first slide rail 402 and the second slide rail 411 are provided with limiting blocks 414.

[0099] In one embodiment of the present invention, the first adjustment component 500 and the second adjustment component 700 have the same structure, both including a mounting base plate 501, a paper tape limiting adjustment plate 502, and an adjustment handwheel 503. One side of the mounting base plate is fixed to the back plate of the frame. The paper tape limiting adjustment plate is slidably connected to the mounting base plate. The front end and the middle part of the limiting adjustment plate are respectively fixed with downwardly extending adjustment ear plates 504. The adjustment handwheel is fixedly connected to the front end of a screw. The middle part of the mounting base plate is provided with a through groove extending forward and backward for the middle adjustment ear plate to pass through. The two adjustment ear plates are respectively provided with mounting holes. The front end of the screw is rotatably connected to the mounting hole of the front adjustment ear plate and is axially positioned. The other end of the screw is threadedly connected to the mounting hole of the middle adjustment ear plate. Turning the adjustment handwheel can drive the paper tape limiting adjustment plate to move back and forth. The upper surface of the limiting adjustment plate is provided with a paper limiting groove.

[0100] The working principles of each major component of this invention and their interrelationships are briefly described below:

[0101] The paper receiving assembly of the paper tube forming machine provided by this invention is used for bonding new and old paper strips. The feeding side of the paper receiving assembly is also equipped with a paper tray assembly, and the discharging side is equipped with a paper strip picking and cutting assembly, a material storage tensioning assembly, a paper strip gluing and bonding assembly, and a paper tube final forming assembly (including a cigarette gun, not shown in the attached drawings, which is an existing assembly). When the old paper strip in the paper tray assembly is close to being used up, the corresponding alarm mechanism is triggered to send a signal to remind the worker to change the roll. In addition to the old paper roll that is about to be used up, there is also a new paper roll station in the paper tray assembly. After the worker places the new paper roll in the corresponding station of the paper tray assembly, he pulls out the free end of the new paper roll and applies glue or sticks transparent tape (the following takes sticking transparent tape as an example). One end of the transparent tape is stuck to the free end, and the other end extends out of the free end and is coated with glue. With the paper facing down, the translation cylinder is activated to retract the positioning plate. Then, the new paper tape is pulled up to the water surface, with its upper surface adhering to the lower surface of the paper pressing pad. The translation cylinder then extends, causing the positioning plate to extend forward. The new paper tape is then inserted between the upper front surface of the positioning plate and the paper pressing pad. Because the paper is relatively thick, the free end with the tape is suspended below the paper pressing pad (also above the old paper tape). When the old paper tape is about to run out, the motor in the cutting component that drives the old paper tape forward gradually stops, stopping the old paper tape. The material holding component (material storage and tensioning component) contains excess old paper tape. Even when the old paper tape supply on the feeding side stops, the material holding component can still supply old paper tape for a short period of time, ensuring that subsequent work does not stop.

[0102] Once the old paper tape at the paper receiving assembly has completely stopped, the lifting cylinder is activated to move the moving base plate and its components upwards. The paper pressure plate and auxiliary paper pressing assembly gradually lift the old paper tape and press it against the new paper tape on the paper pressing pad. The upper left side of the upper surface of the paper pressure plate is higher, so it presses against the paper pressing pad first. As the lifting cylinder continues to retract, the paper pressure plate and the cutter sliding seat rotate around the bearing components until they change from tilting to the upper left to almost horizontal. At this point, the old and new paper tapes are connected by the transparent tape. During this process, the sliding plate will slide to the left due to the action of the moving swing arm. The cutting knife under the paper pressure plate will break and cut the old paper tape. Before cutting, the auxiliary paper pressing assembly on the left and the paper pressure plate on the right have both pressed the old paper tape tightly. After cutting, the lifting cylinder extends, causing the moving base plate to move its components downwards, releasing the old and new paper tapes. Then, the motor in the paper tape picking and slitting assembly is activated, and the new paper roll can continue to supply paper tape.

[0103] At the paper tape picking and slitting assembly, the paper tape to be slitted enters the gap between the left pressure roller and the paper take-up roller from the left side, and then passes sequentially to the right through the gap between the cutting roller and the paper take-up roller, as well as the gap between the right pressure roller and the paper take-up roller. Before starting the operation, the left and right pressure rollers and the cutting roller are moved down (for example, by extending the telescopic device to push the lifting adjustment plate down along the slide rail) to ensure that the pressure of each pressure roller on the paper tape is appropriate (the pressure can be finely adjusted by the pressure roller fine-tuning mechanism). Then, the first and second motors are started to drive the paper take-up roller and the cutting roller to rotate, so as to realize the paper tape picking and conveying and the slitting of the paper tape into two parts. The slitting work is completed at the same time as the conveying.

[0104] At the material storage tensioning assembly, the fixed roller group and the lifting roller group work together to make the first and second paper tapes that pass through the material storage tensioning assembly distribute in a zigzag reciprocating state to achieve paper tape buffering and tensioning. The first and second paper tapes are conveyed from right to left. Taking the first paper tape as an example, it first passes around the first roller on the right side of the upper fixed roller, then wraps downward around the right roller of the upper lifting roller located below, then folds upward around the middle roller of the upper fixed roller, then folds downward around the left roller of the upper lifting roller, and finally folds upward around the left roller of the upper fixed roller. Then it is conveyed to the left into other sections of the paper tube forming machine. During normal production, the sliding table is generally located at the position furthest from the fixed roller group, that is, at the position near the lower end of the first slide rail.

[0105] The first and second adjustment components, as well as the glue application and bonding components, have simple structures. Those skilled in the art can understand their working principles based on the foregoing description and the following figures, and will not elaborate further here.

[0106] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A paper tube forming machine, characterized in that, include: Paper roll assembly (100) includes two radially symmetrical paper roll stations on a rotating disk. One paper roll station is used to place old paper rolls to provide old paper tape to the automatic paper receiving assembly (200), and the other paper roll station is used to place new paper rolls to provide new paper tape to the automatic paper receiving assembly (200) when the old paper rolls are nearly used up. An automatic paper splicing assembly (200) is used for splicing and changing new and old paper tapes; Paper picking and cutting assembly (300), the paper picking and cutting assembly (300) is used to provide power to pick up the paper strip from the paper tray assembly (100) and cut the paper strip from the middle into a first paper strip (407) and a second paper strip (408). Material storage tensioning assembly (400), the material storage tensioning assembly (400) is used to store and tension the first paper tape (407) and the second paper tape (408); The splicing glue application assembly (600) and splicing adhesive assembly (800) are used to apply glue and overlap adhesive to the first paper tape (407) and the second paper tape (408); The first adjustment component (500) and the second adjustment component (700) are used to adjust the position of the paper tape before applying glue and before overlapping and bonding, respectively. It also includes a translational locking and positioning mechanism and a lifting pressing and cutting mechanism. The translational locking and positioning mechanism includes a positioning plate (201), a translational cylinder (202), and a paper pressing pad (203). The lifting, pressing and cutting mechanism includes a paper pressure plate (204), a cutting knife (205), and a lifting cylinder (206). The paper pressure plate (204) is located directly below the paper pressing pad (203) on the right side. The old paper strip passes directly below the positioning tray (201) and passes to the right through the gap between the paper pressing pad (203) and the paper pressure plate (204). The lifting cylinder (206) is used to drive the paper pressure plate (204) to move upward to lift the old paper strip and press it against the adhesive section of the new paper strip. During the process of the paper pressure plate (204) contacting the old paper strip with the new paper strip and pressing it tightly, the cutting knife (205) moves to the left and finally breaks through and cuts the old paper strip. It also includes a fixed substrate (207) and a movable substrate (208) that are both vertically arranged; A cutter sliding seat plate (212) is rotatably connected to the front wall of the movable substrate (208), and the paper pressure plate (204) is disposed on the cutter sliding seat plate (212); The right side of the cutter sliding seat plate (212) is rotatably connected to the movable base plate (208), and the lower left side is hinged to the upper end of a lifting push rod (215). The lower end of the lifting push rod (215) is inserted into the limiting hole of the spring seat (216) provided on the front wall of the movable base plate (208). The inner diameter of the limiting hole is larger than the outer diameter of the lifting push rod (215). A push spring (217) is sleeved on the lifting push rod (215). The lower end abuts against the spring seat (216), the upper edge of the paper pressure plate (204) is flush with the upper left edge of the cutter sliding seat plate (212), the cutting blade (205) is fixed below the left end of the paper pressure plate (204) and the blade protrudes to the left, and the push spring (217) keeps the cutter sliding seat plate (212), the paper pressure plate (204) and the cutting blade (205) tilted to the upper left before pressing the paper pressing pad (203); The paper pressure plate (204) is connected to the cutter sliding seat plate (212) through a sliding swing mechanism. The sliding swing mechanism includes a sliding plate (218), a movable swing rod (219), and a swing rod seat (220). The cutter sliding seat plate (212) has a left-right sliding rail (221) on its front wall. The sliding plate (218) is slidably connected to the left-right sliding rail (221). The upper edge of the sliding plate (218) is fixedly connected to the bottom wall of the paper pressure plate (204). The swing rod seat (220) is fixed on the lower right side of the front wall of the movable base plate (208). The middle part of the front wall of the sliding plate (218) is hinged to the swing rod seat (220) through the movable swing rod (219).

2. The paper tube forming machine according to claim 1, characterized in that, The positioning tray (201) is located directly below the paper pressing pad (203) on the left side. The translation cylinder (202) is used to drive the positioning tray (201) to move horizontally in the front-back direction. After the positioning tray (201) extends forward, it forms a slot with the paper pressing pad (203) for the new paper strip to be inserted and positioned. The left end of the new paper strip is located directly below the paper pressing pad (203) and has an adhesive section.

3. A paper tube forming machine according to claim 2, characterized in that, The translation cylinder (202) is mounted on the rear wall of the fixed base plate (207) via a horizontal first seat plate (209). The fixed base plate (207) has a through hole for the positioning support plate (201) to pass through. The translation cylinder (202) is connected to the positioning support plate (201). The movable substrate (208) is slidably connected to the vertical slide rail (210) on the front side of the fixed substrate (207). The fixed substrate (207) is equipped with the lifting cylinder (206) through the horizontal second seat plate (211). The extension end of the lifting cylinder (206) passes through the rear part of the second seat plate (211) and is connected to the movable substrate (208) below. The paper pressing pad (203) is fixed on the lower front surface of the second seat plate (211).

4. A paper tube forming machine according to claim 3, characterized in that, An auxiliary paper pressing mechanism is also provided on the left side of the front wall of the movable base plate (208). The auxiliary paper pressing mechanism is located directly below the front end of the positioning tray (201) in the extended state. When the lifting cylinder (206) drives the movable base plate (208) to move upward so that the paper pressing plate (204) presses the paper pressing pad (203), the auxiliary paper pressing mechanism presses the old paper strip onto the lower surface of the positioning tray (201).

5. A paper tube forming machine according to claim 1, characterized in that, The paper feeding and cutting assembly (300) includes a paper feeding roller (301), a cutting roller (302), a left pressure roller (303), and a right pressure roller (304). The cutting roller (302) is directly above the paper feeding roller (301), and the left and right pressure rollers (303 and 304) are located on the left and right sides, respectively. An annular cutter (305) is fixed on the cutting roller (302), and an annular groove (306) corresponding to the cutter (305) is provided in the middle of the paper feeding roller (301). The paper take-up roller (301) and the cutting roller (302) are driven to rotate by the first motor (307) and the second motor (308) respectively. The left pressure roller (303) and the right pressure roller (304) can press the paper strip to be cut on the upper left and upper right sides of the paper take-up roller (301) respectively. The paper take-up roller (301) is also included in the pressing and cutting adjustment mechanism. The pressing and cutting adjustment mechanism can drive the cutting roller (302), the left pressure roller (303) and the right pressure roller (304) to move closer to or further away from the paper take-up roller (301).

6. A paper tube forming machine according to claim 5, characterized in that, It also includes a vertically arranged fixed plate (309), on which slide rails are fixed on the left and right sides of the front side of the fixed plate (309) and the first motor (307) is fixed on the back side. The paper take-up roller (301) is located at the lower part of the front side of the fixed plate (309). The pressing and cutting adjustment mechanism includes a vertically arranged lifting adjustment plate (310), which is slidably connected to the slide rail. The lifting adjustment plate (310) is driven to rise and fall along the slide rail by a telescopic device. The cutting roller (302), the left pressure roller (303) and the right pressure roller (304) are located on the front side of the lifting adjustment plate (310). The second motor (308) is fixed on the lifting adjustment plate (310).

7. A paper tube forming machine according to claim 1, characterized in that, The material tensioning assembly (400) includes a fixed roller group and a lifting roller group. The lifting roller group is fixed to the front wall of a vertically arranged sliding table (401). The rear wall of the sliding table (401) is slidably connected to a vertically arranged first slide rail (402). The fixed roller group is located directly above the sliding table (401) and maintains a fixed position relative to the sliding table (401). The fixed roller group includes an upper fixed roller (403) and a lower fixed roller (404). The lifting roller group includes an upper... The upper layer lifting roller (405) and the lower layer lifting roller (406) are connected. The first paper strip (407) is zigzag-shaped and passes over the rollers of the upper layer fixed roller (403) and the upper layer lifting roller (405) in an alternating manner. The second paper strip (408) is zigzag-shaped and passes over the rollers of the lower layer fixed roller (404) and the lower layer lifting roller (406) in an alternating manner. The first paper strip (407) and the second paper strip (408) can drive the sliding table (401) to move up and down along the first slide rail (402).

8. A paper tube forming machine according to any one of claims 1 to 7, characterized in that, The first adjustment component (500) and the second adjustment component (700) have the same structure, both including a mounting base plate (501), a paper tape limiting adjustment plate (502), and an adjustment handwheel (503). One side of the mounting base plate is fixed to the back plate of the frame. The paper tape limiting adjustment plate is slidably connected to the mounting base plate. The front end and the middle part of the limiting adjustment plate are respectively fixed with downwardly extending adjustment ears (504). The adjustment handwheel is fixedly connected to the front end of a screw. The middle part of the mounting base plate is provided with a through groove extending forward and backward for the middle adjusting ears to pass through. The two adjusting ears are respectively provided with mounting holes. The front end of the screw is rotatably connected to the mounting hole of the front adjusting ears and is axially positioned. The other end of the screw is threadedly connected to the mounting hole of the middle adjusting ears. Turning the adjustment handwheel can drive the paper tape limiting adjustment plate to move back and forth. The upper surface of the limiting adjustment plate is provided with a paper limiting groove.

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