CN118617806A - A high-speed forming device for valve bag paper tube - Google Patents

Abstract

The invention relates to the technical field of valve bag paper tube production, in particular to valve bag paper tube high-speed forming equipment which comprises a frame and a winding tube rotatably arranged on the frame, wherein a fixing frame is fixedly arranged on the frame, two groups of pressing plates and cutting knives are arranged on the fixing frame, one side of the winding tube is provided with a limiting roller and a clamping roller, a connecting rod c is fixedly arranged on the limiting roller, and both ends of the connecting rod c are provided with regulating and controlling components which comprise positioning blocks rotatably connected with the clamping roller.

Description

A high-speed forming device for valve bag paper tube

Technical Field

The invention relates to the technical field of valve bag paper tube production, and in particular to a valve bag paper tube high-speed forming device.

Background Art

Common valve bags are mostly made of kraft paper as the raw material. In the process of kraft paper production and rolling into rolls, without changing the rotation speed, the diameter of the roll gradually increases with continuous rotation, indicating that the amount of winding will gradually increase in the same period of time. This requires the supply speed of the output end of the paper roll to become faster and faster. However, this high-speed winding method is prone to problems. Either the supply speed of the output end of the paper roll cannot keep up, causing the winding roll to break the paper, or the supply speed of the output end of the paper roll is too fast, resulting in the kraft paper on the winding roll not having enough time to be rolled up and winding loose, and the kraft paper is not rolled flat, and wrinkles are easily formed when stacked.

Summary of the invention

In view of the above-mentioned shortcomings of the prior art, the present invention provides a valve bag paper tube high-speed forming device, which can effectively solve the problem of the prior art that the rolled kraft paper tube is prone to wrinkles or breaks without changing the rotation speed.

To achieve the above objectives, the present invention is implemented through the following technical solutions:

The present invention provides a valve bag paper tube high-speed forming device, comprising a frame and a winding drum rotatably mounted on the frame, wherein a fixing frame is fixedly mounted on the frame, and two groups of pressing plates for pressing kraft paper and a cutting knife for cutting kraft paper are arranged on the fixing frame, a limiting roller and a clamping roller are arranged on one side of the winding drum, a connecting rod c is fixedly mounted on the limiting roller, and regulating components are arranged at both ends of the connecting rod c, and when the fixed frame is in a loose or tight state for winding the kraft paper, the regulating component timely adjusts the winding rhythm through the position change of the limiting roller.

The regulating component includes a positioning block rotatably connected to the clamping roller, a limiting groove is provided on one side of the positioning block, the connecting rod c is slidably inserted in the limiting groove, a fixing groove is provided in the positioning block, a sliding block b is slidably installed in the fixing groove, and the sliding block b is rotatably connected to the connecting rod c, the sliding block b is square, one corner of which is an inclined surface, a spring is fixedly connected to one side of the sliding block b, and the end of the spring is fixedly connected to the fixing groove, if the kraft paper is in a relaxed state, the spring is used to control the limiting roller to approach the clamping roller by pushing the sliding block b, so that the limiting roller and the clamping roller clamp the kraft paper, temporarily suspending the kraft paper supply, and waiting for the winding roller to tighten the kraft paper thereon.

A sliding rod is slidably inserted on the positioning block, and a trapezoidal block and a sensing block are fixedly installed at both ends of the sliding rod. When the sensing block rises away from the positioning block, it will warn the system that the kraft paper is in a tight state. The spring and the sliding rod are both installed on the side of the sliding block b away from the clamping roller.

Furthermore, an electric push rod is fixedly installed on the outer side of the frame, and an adapter block is fixedly installed on the output end of the electric push rod. A sliding groove b is opened on the frame, and a connecting rod b is slidably inserted in the sliding groove b, and the two ends of the connecting rod b are respectively fixedly connected to the adapter block and the positioning block.

Furthermore, an anti-static roller is arranged above the winding drum, and both ends of the anti-static roller are fixedly connected with connecting rods a, and a sliding block a is rotatably installed on the end of the connecting rod a. The winding drum is provided with a sliding groove a, and the sliding block a is slidably inserted in the sliding groove a.

Furthermore, a marking block is fixedly mounted on the sliding block a, and a rangefinder is fixedly connected to the top of the sliding slot a.

Furthermore, a threaded rod is threadedly installed on the fixing frame, the end of the threaded rod is fixedly connected to the fixing plate, a limiting rod is fixedly installed on the fixing plate, and the limiting rod is slidably inserted on the fixing frame, a sliding groove is opened at the bottom of the limiting rod, a screw rod is rotatably installed in the sliding groove, and the cutting knife is rotatably connected to the screw rod.

Furthermore, a plurality of sets of fixed sleeves are fixedly connected to the bottom of the limit rod and located on both sides of the slide groove, a sliding rod is slidably inserted at the bottom of the fixed sleeve, and the sliding rod is fixedly connected to the pressure plate, and a termination key is fixedly installed on the limit rod and located at the end of the fixed sleeve.

Furthermore, a support roller is rotatably installed between the two groups of positioning blocks, and the support roller is located on the side of the limiting roller away from the clamping roller, and the limiting roller and the support roller are respectively located directly below the two groups of pressure plates.

Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects:

The present invention provides a regulating component. During the high-speed winding process of kraft paper, the winding kraft paper will generate pulling force on the kraft paper, and the pulling force will push the limiting roller away from the clamping roller. When the high-speed rotation makes the kraft paper supply insufficient, resulting in the kraft paper being tight, the kraft paper pushes the limiting roller to squeeze the spring on the side and trigger an alarm. The system automatically adjusts the winding speed in time to ensure efficient and high-quality winding of the kraft paper. If the winding of the kraft paper is loose due to the slow speed of winding the kraft paper, the limiting roller will be close to the clamping roller again due to the lack of the thrust of the kraft paper, so that the limiting roller and the clamping roller clamp the kraft paper, briefly suspending the supply of kraft paper until the winding roller tightens the kraft paper thereon and makes the kraft paper have pulling force again, pushing the limiting roller away from the clamping roller, and then resuming the supply of kraft paper.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

FIG1 is a schematic diagram of a three-dimensional structure of the present invention;

FIG2 is a schematic diagram of the three-dimensional structure of the control component of the present invention;

FIG3 is a schematic cross-sectional view of the control component of the present invention;

FIG4 is a schematic diagram of a partial three-dimensional structure of a frame of the present invention;

FIG5 is a schematic diagram of the three-dimensional structure of the pressing plate part of the present invention;

FIG6 is a schematic cross-sectional view of the fixed sleeve of the present invention;

FIG. 7 is a state diagram of the present invention when rolling up kraft paper.

Reference numerals:

1. Frame; 101. Winding drum; 102. Sliding groove a; 103. Antistatic roller; 1031. Connecting rod a; 1032. Sliding block a; 1033. Marking block; 1034. Distance meter; 104. Sliding groove b; 2. Fixed frame; 201. Threaded rod; 202. Fixed plate; 203. Limit rod; 204. Fixed sleeve; 205. Sliding rod; 206. Press plate; 207. Cutting knife; 3. Electric push rod; 301. Adapter block; 302. Connecting rod b; 303. Positioning block; 3031. Limiting groove; 3032. Sliding block b; 3033. Spring; 3034. Sliding rod; 3035. Trapezoidal block; 3036. Induction block; 304. Support roller; 305. Limiting roller; 3051. Connecting rod c; 306. Clamping roller.

DETAILED DESCRIPTION

In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

The present invention will be further described below in conjunction with the embodiments.

Embodiment 1:

Referring to Figures 1 to 3 and 7, a valve bag paper tube high-speed forming device includes a frame 1 and a winding drum 101 rotatably mounted on the frame 1, the winding drum 101 is used to roll up kraft paper, and a motor for driving the winding drum 101 to rotate is provided on one side of the frame 1. An electric push rod 3 is fixedly installed on the outer side of the frame 1, and the electric push rod 3 is used to control the lifting and lowering of the limit roller 305. During the process of the winding drum 101 rotating and rolling, the electric push rod 3 controls the limit roller 305 to rise as the diameter of the paper roll increases, and the output of the electric push rod 3 An adapter block 301 is fixedly installed at the end, and the adapter block 301 serves as an adapter for the electric push rod 3 and the connecting rod b302. A sliding groove b104 is opened on the frame 1, and the sliding groove b104 is used to limit the sliding trajectory of the connecting rod b302, which helps to enhance the stability of the lifting and lowering of the limiting roller 305. A connecting rod b302 is slidably inserted in the sliding groove b104, and the two ends of the connecting rod b302 are fixedly connected to the adapter block 301 and the positioning block 303 respectively. The connecting rod b302 is used to pass through the frame 1 to connect the electric push rod 3 and the limiting roller 305.

A limiting roller 305 and a clamping roller 306 are arranged on one side of the winding drum 101. The limiting roller 305 is arranged to monitor the tightness of the kraft paper. When the kraft paper is tight, the limiting roller 305 is pulled to move toward the supporting roller 304. The kraft paper is relieved of a certain inclination angle, thereby relieving a little tension, and an alarm is given to the system through the regulating component. A connecting rod c3051 is fixedly installed on the limiting roller 305. The connecting rod c3051 is arranged to facilitate the sliding of the limiting roller 305 on the regulating component. The regulating components are arranged at both ends of the connecting rod c3051. When the connecting rod c3051 is fixed, the limiting roller 305 can slide on the regulating component. When the kraft paper winding of rack 2 is loose or tight, the regulating component promptly warns the system through the position change of the limit roller 305, allowing the system to regulate the winding rhythm and balance the rotation speed of the winding drum 101 and the supply speed of the paper roll, thereby solving the problem of tight winding of the kraft paper. By setting the clamping roller 306, when the kraft paper winding is loose, the limit roller 305 loses the driving force of the kraft paper, and is affected by the regulating component to drive the kraft paper close to the clamping roller 306, thereby achieving the purpose of clamping and fixing the kraft paper by the limit roller 305 and the clamping roller 306, which is convenient for the winding drum 101 to tighten the loose kraft paper in time.

The regulating component includes a positioning block 303 rotatably connected to the clamping roller 306, a limiting groove 3031 is provided on one side of the positioning block 303, the connecting rod c3051 is slidably inserted in the limiting groove 3031, the limiting groove 3031 is used to limit the sliding range of the connecting rod c3051, a fixed groove is provided in the positioning block 303, and the sliding range of the sliding block b3032 is limited by setting the fixed groove, and the sliding block b3032 is slidably installed in the fixed groove, and the sliding block b3032 is rotatably connected to the connecting rod c3051, and by setting the sliding block b3032, the sliding block b3032 moves toward the trapezoidal block 3035 and pushes it upward, and the sliding block b3032 is square, one corner of which is an inclined surface, and the square shape helps to avoid the sliding block b303 2 rotates during the movement, causing the position of the bevel angle to change, and when the sliding block b3032 is located directly below the trapezoidal block 3035, the setting of the top plane of the sliding block b3032 is conducive to maintaining a stable height of the trapezoidal block 3035. A spring 3033 is fixedly connected to one side of the sliding block b3032, and the end of the spring 3033 is fixedly connected to the fixed groove. If the kraft paper is in a loose state, the spring 3033 is used to push the sliding block b3032 to control the limiting roller 305 to approach the clamping roller 306, so that the limiting roller 305 and the clamping roller 306 clamp the kraft paper, temporarily suspending the kraft paper supply, waiting for the winding roller 101 to tighten the kraft paper thereon, until the kraft paper pushes the limiting roller 305 away from the clamping roller 306 again.

A slide bar 3034 is slidably inserted on the positioning block 303. The slide bar 3034 is used to connect the trapezoidal block 3035 and the sensing block 3036 and limit their position changes. The trapezoidal block 3035 and the sensing block 3036 are fixedly installed at both ends of the slide bar 3034. By setting the trapezoidal block 3035, it is convenient for the sliding block b3032 to use it to push the slide bar 3034 to rise. By setting the sensing block 3036, when the sensing block 3036 rises away from the positioning block 303, it will warn the system that the kraft paper is in a tight state. The spring 3033 and the slide bar 3034 are both installed on the side of the sliding block b3032 away from the clamping roller 306.

Specifically, the kraft paper passes between the limiting roller 305 and the clamping roller 306, and is continuously rotated and rolled up by the winding drum 101. In the process of rolling the kraft paper into a roll, the limiting roller 305 of the kraft paper in a normal state will push the limiting roller 305 and the clamping roller 306 to maintain a certain distance. When the kraft paper is in a tight state, the kraft paper will further push the limiting roller 305 to move toward the supporting roller 304. The limiting roller 305 controls the sliding block b3032 to move toward the spring 3033 through the connecting rod c3051. The sliding block b3032 pushes the trapezoidal block 3035 to rise. The trapezoidal block 3035 moves the sensing block through the sliding rod 3034. 3036 is lifted up, so that the sensing block 3036 is separated from the positioning block 303, and the sensing block 3036 sends an alarm signal to the system, allowing the system to adjust the winding rhythm, balance the rotation speed of the winding drum 101 and the supply speed of the paper roll, thereby solving the problem of tight winding of the kraft paper. When the kraft paper is loose, the limiting roller 305 loses the driving force of the kraft paper, and the spring 3033 pushes the limiting roller 305 through the sliding block b3032 to drive the kraft paper close to the clamping roller 306, thereby achieving the purpose of clamping and fixing the kraft paper by the limiting roller 305 and the clamping roller 306, so that the winding drum 101 can speed up in time to tighten the loose kraft paper.

Embodiment 2:

Referring to Figures 1 and 4, an anti-static roller 103 is arranged above the winding drum 101. The anti-static roller 103 is used to smooth the surface of the wound kraft paper to avoid wrinkles. Both ends of the anti-static roller 103 are fixedly connected with connecting rods a1031. The connecting rod a1031 is arranged to connect the anti-static roller 103 and the sliding block a1032. The sliding block a1032 is rotatably installed at the end of the connecting rod a1031. The sliding block a1032 is set to be square, which helps to prevent the sliding block a1032 from sliding and rotating along the sliding groove a102 during the lifting process, thereby making the marking block 1033 The winding drum 101 is offset from the distance meter 1034, and a sliding groove a102 is provided on the winding drum 101. The sliding block a1032 is slidably inserted in the sliding groove a102. The sliding groove a102 limits the lifting and lowering trajectory of the anti-static roller 103. A marking block 1033 is fixedly installed on the sliding block a1032. The top of the sliding groove a102 is fixedly connected with the distance meter 1034. By setting the marking block 1033 and the distance meter 1034, the distance meter 1034 can detect the distance between the marking block 1033 and the distance meter 1034 in real time, so that the system can control the limiting roller 305 through the electric push rod 3 to always keep the relative height of the anti-static roller 103.

Embodiment three:

Referring to Figures 1, 5 and 6, a fixing frame 2 is fixedly mounted on the frame 1, and the fixing frame 2 is used to support a pressing plate 206 and a cutting knife 207. The fixing frame 2 is provided with two groups of pressing plates 206 for pressing kraft paper and cutting knives 207 for cutting kraft paper.

The fixing frame 2 is threadedly mounted with a threaded rod 201. By setting the threaded rod 201, the height of the pressing plate 206 is changed, thereby limiting the rising height of the limiting roller 305, so as to achieve the purpose of freely adjusting the required paper roll diameter. The end of the threaded rod 201 is fixedly connected to the fixing plate 202, and the fixing plate 202 is used to support the pressing plate 206 and the cutting knife 207. The fixing plate 202 is fixedly mounted with a limiting rod 203, and the limiting rod 203 is slidably inserted on the fixing frame 2. The limiting rod 203 is used to prevent the fixing plate 202 from rotating with the threaded rod 201, and strengthen the connection between the fixing plate 202 and the fixing frame 2. A sliding groove is provided at the bottom of the limiting rod 203, and a screw rod is rotatably installed in the sliding groove. The cutting knife 207 is rotatably connected to the screw rod. A driving member for controlling the forward and reverse rotation of the screw rod is provided on one side of the limiting rod 203. By setting the sliding groove and the screw rod, the driving member controls the rotation of the screw rod, and the screw rod controls the cutting knife 207 to slide along the sliding groove to cut the kraft paper.

The bottom of the limit rod 203 and the two sides of the slide groove are fixedly connected with multiple groups of fixed sleeves 204, and the fixed sleeves 204 are used to limit the sliding range of the sliding rod 205. The bottom of the fixed sleeve 204 is slidably inserted with a sliding rod 205, and the sliding rod 205 is fixedly connected to the pressure plate 206. The sliding rod 205 can trigger the pressure plate 206 after rising. The limit rod 203 and the end of the fixed sleeve 204 are fixedly installed with a stop key. The stop key will release a signal to the system to stop rotating the winding drum 101, and start the drive to control the rotation of the screw rod, so that the cutting knife 207 cuts the kraft paper. A supporting roller 304 is rotatably installed between the two groups of positioning blocks 303, and the supporting roller 304 is located on the side of the limit roller 305 away from the clamping roller 306. The supporting roller 304 is used to support the cut kraft paper end on the side of the clamped paper roll, so that the staff can process the kraft paper end and pack the entire paper roll. The limiting roller 305 and the supporting roller 304 are respectively located directly below the two groups of pressure plates 206, so that the pressure plates 206 can cooperate with them to clamp and fix the kraft paper. Specifically, the pressure plate 206 will first contact the kraft paper, and after cooperating with the supporting roller 304 and the limiting roller 305 to stably clamp the kraft paper, the supporting roller 304 and the limiting roller 305 continue to push the sliding rod 205 to rise until the sliding rod 205 squeezes the stop button. The stop button will release a stop signal to the system, and the system will stop rotating the winding drum 101, stop the electric push rod 3 from continuing to extend upward, and start the driving part to control the rotation of the screw rod, so that the cutting knife 207 cuts the kraft paper.

Working principle: The kraft paper passes between the limiting roller 305 and the clamping roller 306, and the winding roller 101 driven by the motor rotates and reels continuously. In the process of winding the kraft paper into a roll, the anti-static roller 103 is close to the kraft paper roll on the winding roller 101, removes the static electricity thereon, and smoothes the wrinkles thereon. In a normal state, the kraft paper limiting roller 305 will push the limiting roller 305 and the clamping roller 306 to maintain a certain distance. When the kraft paper is in a taut state, the kraft paper will further push the limiting roller 305 to move toward the supporting roller 304. The limiting roller 305 controls the sliding block b3032 to move toward the spring 3033 through the connecting rod c3051, and the sliding block b3032 pushes the trapezoidal block 303 5 rises, the trapezoidal block 3035 lifts the sensing block 3036 through the sliding bar 3034, so that the sensing block 3036 is separated from the positioning block 303, and the sensing block 3036 sends an alarm signal to the system, allowing the system to adjust the winding rhythm, balance the rotation speed of the winding drum 101 and the supply speed of the paper roll, thereby solving the problem of tight winding of the kraft paper. When the kraft paper is loose, the limit roller 305 loses the driving force of the kraft paper, and the spring 3033 pushes the limit roller 305 through the sliding block b3032 to drive the kraft paper close to the clamping roller 306, so that the limit roller 305 and the clamping roller 306 clamp and fix the kraft paper, which is convenient for the winding drum 101 to speed up in time to tighten the loose kraft paper.

As the diameter of the kraft paper roll rolled on the winding drum 101 increases, the paper roll pushes the anti-static roller 103 upward, and the anti-static roller 103 rises along the sliding groove a102. The distance meter 1034 detects the distance to the marking block 1033 in real time, so that the system can always keep the relative height of the anti-static roller 103 by controlling the limiting roller 305 through the electric push rod 3. The electric push rod 3 controls the two groups of positioning blocks 303 to rise through the connecting rod b302 connected to the adapter block 301. The positioning blocks 303 support the roller 304 and the limiting roller 305. 305 and the limiting roller 305 are lifted together. When they rise to contact the pressure plate 206, the pressure plate 206 cooperates with the supporting roller 304 and the limiting roller 305 to stably clamp the kraft paper. The supporting roller 304 and the limiting roller 305 continue to push the sliding rod 205 to rise until the sliding rod 205 squeezes the end button. The end button will release a stop signal to the system, and the system will stop rotating the winding drum 101, stop the electric push rod 3 from continuing to extend upward, and start the driving part to control the rotation of the screw rod, so that the cutting knife 207 cuts the kraft paper.

The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims (7)

1. A valve bag paper tube high-speed forming device, comprising a frame (1) and a winding drum (101) rotatably mounted on the frame (1), characterized in that a fixed frame (2) is fixedly mounted on the frame (1), and two groups of pressing plates (206) for pressing kraft paper and a cutting knife (207) for cutting kraft paper are arranged on the fixed frame (2), a limiting roller (305) and a clamping roller (306) are arranged on one side of the winding drum (101), a connecting rod c (3051) is fixedly mounted on the limiting roller (305), and both ends of the connecting rod c (3051) are provided with regulating components, and when the fixed frame (2) is in a loose or tight state for winding the kraft paper, the regulating component timely adjusts the winding rhythm through the position change of the limiting roller (305); The regulating assembly comprises a positioning block (303) rotatably connected to the clamping roller (306), a limiting groove (3031) is provided on one side of the positioning block (303), the connecting rod c (3051) is slidably inserted in the limiting groove (3031), a fixing groove is provided in the positioning block (303), a sliding block b (3032) is slidably installed in the fixing groove, and the sliding block b (3032) is rotatably connected to the connecting rod c (3051), and the sliding block b (3032) is square, one corner of which is The inclined surface, one side of the sliding block b (3032) is fixedly connected with a spring (3033), and the end of the spring (3033) is fixedly connected to the fixed groove. If the kraft paper is in a loose state, the spring (3033) is used to push the sliding block b (3032) to control the limiting roller (305) to approach the clamping roller (306), so that the limiting roller (305) and the clamping roller (306) clamp the kraft paper, temporarily suspending the supply of kraft paper and waiting for the winding roller (101) to tighten the kraft paper thereon; A slide bar (3034) is slidably inserted on the positioning block (303), and a trapezoidal block (3035) and a sensing block (3036) are respectively fixedly installed at both ends of the slide bar (3034). When the sensing block (3036) rises away from the positioning block (303), it will warn the system that the kraft paper is in a tight state. The spring (3033) and the slide bar (3034) are both installed on the side of the slide block b (3032) away from the clamping roller (306). 2. A valve bag paper tube high-speed forming device according to claim 1, characterized in that an electric push rod (3) is fixedly installed on the outer side of the frame (1), and an adapter block (301) is fixedly installed on the output end of the electric push rod (3), and a sliding groove b (104) is opened on the frame (1), and a connecting rod b (302) is slidably inserted in the sliding groove b (104), and the two ends of the connecting rod b (302) are fixedly connected to the adapter block (301) and the positioning block (303) respectively. 3. A valve bag paper tube high-speed forming equipment according to claim 1, characterized in that an anti-static roller (103) is arranged above the winding drum (101), both ends of the anti-static roller (103) are fixedly connected with a connecting rod a (1031), and a sliding block a (1032) is rotatably installed at the end of the connecting rod a (1031), and the winding drum (101) is provided with a sliding groove a (102), and the sliding block a (1032) is slidably inserted in the sliding groove a (102). 4. A valve bag paper tube high-speed forming device according to claim 3, characterized in that a marking block (1033) is fixedly installed on the sliding block a (1032), and a distance meter (1034) is fixedly connected to the top of the sliding groove a (102). 5. A valve bag paper tube high-speed forming device according to claim 1, characterized in that a threaded rod (201) is threadedly installed on the fixed frame (2), the end of the threaded rod (201) is fixedly connected to the fixed plate (202), a limit rod (203) is fixedly installed on the fixed plate (202), and the limit rod (203) is slidably inserted on the fixed frame (2), a sliding groove is opened at the bottom of the limit rod (203), a screw rod is rotatably installed in the sliding groove, and the cutting knife (207) is rotatably connected to the screw rod. 6. A valve bag paper tube high-speed forming device according to claim 5, characterized in that a plurality of groups of fixed sleeves (204) are fixedly connected to the bottom of the limit rod (203) and located on both sides of the slide groove, a sliding rod (205) is slidably inserted into the bottom of the fixed sleeve (204), and the sliding rod (205) is fixedly connected to the pressure plate (206), and a termination key is fixedly installed on the limit rod (203) and located at the end of the fixed sleeve (204). 7. A valve bag paper tube high-speed forming device according to claim 1, characterized in that a supporting roller (304) is rotatably installed between the two groups of positioning blocks (303), and the supporting roller (304) is located on the side of the limiting roller (305) away from the clamping roller (306), and the limiting roller (305) and the supporting roller (304) are respectively located directly below the two groups of pressure plates (206).