Rewinding machine with safety protection function

Abstract

The invention relates to a rewinding machine with a safety protection function, which belongs to the technical field of papermaking equipment and comprises a control system, a feeding mechanism, a feeding protection mechanism, a rewinding mechanism and a rewinding protection mechanism, the feeding mechanism, the feeding protection mechanism, the rewinding mechanism and the rewinding protection mechanism are electrically controlled through the control system, automatic operation and safety protection are achieved, the encoder is used for detecting the opening and closing state of the protection door, a signal is fed back to the control device, work of the rewinding driver can be stopped when necessary, and the safety of the rewinding machine is improved. The problems that an existing rewinding machine generally only has the simple functions of starting-up work and shutdown dormancy and does not have the safety protection function, the safety risk exists when the rewinding machine operates at a high speed, production personnel possibly do not work according to safety operation regulations under the promotion of performance and fluke mind, and industrial accidents are caused are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of papermaking equipment, and in particular relates to a rewinding machine with a safety protection function. Background Art

[0002] The rewinder is a special equipment for papermaking. Its purpose is to rewind the paper rolls (called base paper rolls) produced by the papermaking machine in sequence. After rewinding, the paper is made into finished paper and shipped out of the factory.

[0003] For example, patent authorization announcement number: CN201310723839.3 discloses a new type of upper paper-guiding medium-high speed rewinding machine, including a paper placing rack, a working frame and a paper unloading platform arranged in sequence from front to back; the working frame is provided with a first multi-section paper guide roller, a second multi-section paper guide roller and a paper winding rod in sequence from front to back; a longitudinal cutting device is provided directly above the paper winding rod; a first paper winding bottom roller and a second paper winding bottom roller are provided in sequence from front to back directly below the paper winding rod; the first paper winding bottom roller is a driven roller; the second paper winding bottom roller is equipped with a driving device to drive it to rotate; the first multi-section paper guide roller, the second multi-section paper guide roller, the paper winding rod, the first paper winding bottom roller and the second paper winding bottom roller are arranged horizontally and parallel to each other; the first paper winding bottom roller and the second paper winding bottom roller are tangent to each other and have the same outer diameter; the working frame is also provided with a paper pressing rod and a paper unwinding device.

[0004] Based on the search of the above patent authorization announcement number and the shortcomings found therein: Existing rewinding machines usually only have simple functions of starting up and stopping, and dormancy, and do not have safety protection functions. Rewinding machines pose great safety risks when running at high speeds, and if production personnel mistakenly enter the operating area, work-related accidents may occur. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a rewinding machine with a safety protection function to solve the technical problem that the existing rewinding machines usually only have simple functions of starting up and stopping and sleeping, and do not have a safety protection function. When the rewinding machine runs at high speed, there is a great safety risk. If the production personnel mistakenly enter the operating area, it may cause work-related accidents.

[0006] The purpose of the present invention can be achieved through the following technical solutions: A rewinding machine with a safety protection function comprises a control system and a feeding mechanism, a feeding protection mechanism, a rewinding mechanism and a rewinding protection mechanism electrically connected to the control system; the feeding mechanism comprises a paper placing rack, on which a feeding roller for placing a base paper roll is rotatably provided; the rewinding mechanism comprises a paper reeling rack, on which a rewinding roller for winding paper is rotatably provided, and a rewinding driver for driving the rewinding roller to rotate; The feeding mechanism and the rewinding mechanism are arranged at intervals, the feeding protection mechanism comprises a first protection net surrounding the feeding mechanism, and a first protection door arranged on the first protection net, and the control system is used to control the first protection door to be opened or closed; the rewinding protection mechanism comprises a second protection net surrounding the rewinding mechanism, and a second protection door arranged on the second protection net, and the control system is also used to control the second protection door to be opened or closed; The control system includes a first door driver transmission-connected to the first protective door, a second door driver transmission-connected to the second protective door, and a control device for controlling the first door driver, the second door driver, and the rewinding driver. The first door driver is provided with a first encoder, and the second door driver is provided with a second encoder. The control device detects the opening and closing states of the first protective door and the second protective door respectively through the first encoder and the second encoder. When any one of the first protective door and the second protective door is in an open state, the control device controls the rewinding driver to stop working.

[0007] As a preferred technical solution of the present invention, the rewinding mechanism also includes a protective cover, which is rotatably disposed on the paper roll stand, and includes a semicircular panel with its center facing the rewinding roller, and has a first position and a second position in the rotation stroke of the protective cover, and when the protective cover rotates to the first position, the semicircular panel blocks the side of the rewinding roller away from the feeding mechanism; when the protective cover rotates to the second position, the semicircular panel blocks the lower side of the rewinding roller.

[0008] As a preferred technical solution of the present invention, a first limit stop and a second limit stop are provided on the paper roll holder. When the protective cover rotates to the first position, the protective cover abuts against the first limit stop, and the first limit stop is used to limit the rotation of the protective cover in the first position toward the direction away from the second position; when the protective cover rotates to the second position, the protective cover abuts against the second limit stop, and the second limit stop is used to limit the rotation of the protective cover in the second position toward the direction away from the first position.

[0009] As a preferred technical solution of the present invention, the protective cover includes two connecting sleeves respectively sleeved on both ends of the rewinding roller, and two connecting rods respectively connected between the two connecting sleeves and the semicircular panel; The connecting sleeve includes an inner ring sleeve and an outer ring sleeve, the inner ring sleeve is arranged on the outside of the rewinding roller, the outer ring sleeve is arranged on the outside of the inner ring sleeve, the connecting rod is connected to the outer ring sleeve, and an abutment block is arranged on the outer peripheral side of the outer ring sleeve, the abutment block is used to abut with the first limit block when the protective cover is in the first position, and the abutment block is also used to abut with the second limit block when the protective cover is in the second position; a clutch assembly is arranged between the inner ring sleeve and the outer ring sleeve, when the protective cover rotates to the first position or the second position, the clutch assembly separates the power between the inner ring sleeve and the outer ring sleeve; when the protective cover rotates to the first position or the second position, the clutch assembly connects the power between the inner ring sleeve and the outer ring sleeve.

[0010] As a preferred technical solution of the present invention, the clutch assembly includes a plurality of first telescopic grooves arranged on the inner circumference of the outer ring sleeve, a plurality of second telescopic grooves arranged on the outer circumference of the inner ring sleeve, and a telescopic block and a spring arranged in the first telescopic groove, the telescopic block is connected to the first telescopic groove through the spring, and the spring is used to provide elastic force for the telescopic block to protrude out of the first telescopic groove, and the first telescopic groove corresponds one-to-one to the second telescopic groove.

[0011] As a preferred technical solution of the present invention, the first door driver includes a first motor, a first screw and a first nut with coincident rotation center axes, the first screw is connected to the output shaft of the first motor, and the first nut is screwed to the first screw; two first door drivers are provided, and the first nuts in the two first door drivers are respectively connected to the two sides of the first protective door.

[0012] As a preferred technical solution of the present invention, an electromagnetic clutch is arranged between the first motor and the first screw, and the electromagnetic clutch and the first motor share the same power supply; when the electromagnetic clutch is powered on, the power between the first motor and the first screw is connected; when the electromagnetic clutch is powered off, the power between the first motor and the first screw is separated.

[0013] As a preferred technical solution of the present invention, the feeding mechanism includes a first ground mat, which is arranged on the ground around the bottom of the paper roll rack, and a first pressure sensor is provided inside the first ground mat; when the first pressure sensor detects that the pressure borne on the first ground mat is greater than a first preset pressure, the control system controls the rewinding drive to stop working.

[0014] As a preferred technical solution of the present invention, the rewinding mechanism includes a second floor mat, which is arranged on the ground around the bottom of the rewinding frame, and a second pressure sensor is provided inside the second floor mat; when the second pressure sensor detects that the pressure borne on the second floor mat is greater than a second preset pressure, the control system controls the rewinding drive to stop working.

[0015] As a preferred technical solution of the present invention, a bridge is provided between the feeding mechanism and the rewinding mechanism, the bridge is provided outside the first protection net and the second protection net, and the length direction of the bridge is parallel to the axial direction of the feeding roller and the axial direction of the rewinding roller; The bridge includes at least two supporting parts abutting against the ground, and a raised part arranged between the supporting parts and raised in a direction away from the ground, and a paper feeding space is formed between the raised part and the ground; The feeding mechanism includes a first transfer roller close to the paper feeding space, and the rewinding mechanism includes a second transfer roller close to the paper feeding space. One end of the base paper roll placed on the feeding roller passes through the first transfer roller, the paper feeding space, and the second transfer roller in sequence and is then wound around the rewinding roller.

[0016] The beneficial effects of the present invention are: The present invention provides a rewinding machine with a safety protection function. The feeding mechanism, the feeding protection mechanism, the rewinding mechanism and the rewinding protection mechanism are electrically controlled by a control system to realize automatic operation and safety protection. An encoder is used to detect the opening and closing state of a protective door, and a signal is fed back to a control device. The operation of the rewinding drive can be stopped when necessary, thereby solving the problem that the existing rewinding machine usually only has the simple functions of starting work and stopping and sleeping, and does not have a safety protection function. The rewinding machine has a greater safety risk when running at a high speed. Production personnel, driven by performance and fluke mentality, may not operate according to the safety operating procedures, resulting in work-related accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a first stereoscopic view of a rewinding machine with a safety protection function according to the present invention; Figure 2 This is a second stereoscopic view of a rewinding machine with a safety protection function according to the present invention; Figure 3 It is a schematic diagram of a rewinding mechanism of a rewinding machine with a safety protection function according to the present invention; Figure 4 for Figure 3 A magnified cross-sectional view of part A; Figure 5 This is a first cross-sectional view of a connecting sleeve of a rewinding machine with a safety protection function according to the present invention; Figure 6 This is a second cross-sectional view of a connecting sleeve of a rewinding machine with a safety protection function according to the present invention; Figure 7 This is a third cross-sectional view of a connecting sleeve of a rewinding machine with a safety protection function according to the present invention; Figure 8 The present invention is a schematic diagram of the connection structure of a first protective door and a first door driver of a rewinder with a safety protection function.

[0019] Main component symbols In the figure: 1. feeding mechanism; 11. paper rack; 12. feeding roller; 2. first protective net; 21. first protective door; 22. first door driver; 221. first motor; 222. first screw; 223. first nut; 224. electromagnetic clutch; 3. rewinding mechanism; 31. paper rack; 311. first limit block; 312. second limit block; 32. rewinding roller; 33. rewinding driver; 34. protective cover; 341. semicircular panel; 342. connecting rod; 343. connecting sleeve; 3431. outer ring sleeve; 3432. inner ring sleeve; 3433. first telescopic slot; 3434. second telescopic slot; 3435. telescopic block; 3436. spring; 3437. abutment block; 4. second protective net; 41. second protective door; 5. bridge. DETAILED DESCRIPTION

[0020] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0021] See also Figure 1-8The present embodiment provides a rewinding machine with a safety protection function, comprising a control system and a feeding mechanism 1 electrically connected to the control system, a feeding protection mechanism, a rewinding mechanism 3, and a rewinding protection mechanism; the feeding mechanism 1 comprises a paper placing rack 11, on which a feeding roller 12 for placing a base paper roll is rotatably provided; the rewinding mechanism 3 comprises a paper reel rack 31, on which a rewinding roller 32 for winding paper is rotatably provided, and a rewinding driver 33 for driving the rewinding roller 32 to rotate; wherein the feeding mechanism 1 and the rewinding mechanism 3 are arranged at intervals, the feeding protection mechanism comprises a first protection net 2 surrounding the feeding mechanism 1, and a first protection door 21 arranged on the first protection net 2, and the control system is used to control the first protection door 21 to be opened or closed; the rewinding ... first protection door 21 is opened or closed; the rewinding protection mechanism comprises a first protection net 2 surrounding the feeding mechanism 1, and a first protection door 21 is arranged on the first protection net 2, and the first protection door 21 is opened or closed; the rewinding protection mechanism comprises a first protection net 2 surrounding the feeding mechanism 1, and a first protection door 21 is arranged on the first protection net 2, and the first protection door 21 is opened or closed; the rewinding protection mechanism comprises a first protection net 2 surrounding the feeding mechanism 1, and a first protection door 21 is arranged on the first protection net 2, and the first protection door 21 is opened or closed; the rewinding protection mechanism comprises a first protection net 2 surrounding the feeding mechanism 1, and a first protection door 2 A second protective net 4 is arranged on the side of the rewinding mechanism 3, and a second protective door 41 is arranged on the second protective net 4, and the control system is also used to control the second protective door 41 to open or close; the control system includes a first door driver 22 that is transmission-connected to the first protective door 21, a second door driver that is transmission-connected to the second protective door 41, and a control device for controlling the first door driver 22, the second door driver, and the rewinding driver 33, a first encoder is arranged on the first door driver 22, and a second encoder is arranged on the second door driver, the control device detects the opening and closing states of the first protective door 21 and the second protective door 41 respectively through the first encoder and the second encoder, and when any one of the first protective door 21 and the second protective door 41 is in an open state, the control device controls the rewinding driver 33 to stop working.

[0022] It can be understood that the feeding mechanism 1, the feeding protection mechanism, the rewinding mechanism 3 and the rewinding protection mechanism are electrically controlled by the control system to realize automatic operation and safety protection. The encoder is used to detect the opening and closing state of the protective door, and the signal is fed back to the control device, so that the rewinding drive 33 can be stopped when necessary. In some embodiments, when the first protective door 21 and the second protective door 41 are both in the closed state, the control device allows the rewinding drive 33 to work, and the rewinding mechanism 3 starts to rewind the paper; if any one of the first protective door 21 or the second protective door 41 is opened, the encoder detects this state change and sends a signal to the control device, and the control device immediately stops the rewinding drive 33 to prevent the rewinding mechanism 3 from continuing to operate when the first protective door 21 or the second protective door 41 is opened, causing danger; when the protective door is closed again and detected by the encoder, the control device can restart the rewinding drive 33 to resume the work of the rewinder.

[0023] It should be explained that an encoder is a sensor used to measure the displacement, speed or position of an object. In the rewinding machine of this embodiment, the encoder is installed on the first door driver 22 and the second door driver respectively. When the first protective door 21 or the second protective door 41 is opened or closed, the output shaft of the first door driver 22 and the second door driver will rotate accordingly, and the encoder can detect this rotation and convert it into an electrical signal. The encoder converts the detected rotational motion into an electrical signal (usually a digital signal), and then transmits it to the control device through a cable or wirelessly. The control device is internally configured with special software or hardware logic to process the signal received from the encoder. These logics will determine whether to allow the rewinding drive 33 to work according to the output state of the encoder. If it is detected that the first protective door 21 or the second protective door 41 is in an open state, the control logic will immediately stop the operation of the rewinding drive 33 to ensure safety.

[0024] In some embodiments, considering that when the rewinding machine processes paper or other materials, the rewinding roller 32 area is a key operating area and a potential danger area. If the operator accidentally touches the rapidly rotating rewinding roller 32, serious injury may occur. Therefore, the rewinding mechanism 3 of this embodiment also includes a protective cover 34, which is rotatably arranged on the paper roll holder 31. The protective cover 34 includes a semicircular panel 341 with the center facing the rewinding roller 32, and has a first position and a second position in the rotation stroke of the protective cover 34. When the protective cover 34 rotates to the first position, the semicircular panel 341 blocks the side of the rewinding roller 32 away from the feeding mechanism 1; when the protective cover 34 rotates to the second position, the semicircular panel 341 blocks the lower side of the rewinding roller 32.

[0025] It is understandable that the protective cover 34 may be in the first position or the second position. In the first position, the semicircular panel 341 blocks the side of the rewinding roller 32 away from the feeding mechanism 1 to prevent the operator from approaching the rewinding roller 32 from this side. In the second position, the semicircular panel 341 blocks the lower side of the rewinding roller 32, which is convenient for the operator to approach the rewinding roller 32 to perform operation or inspection tasks. When it is necessary to adjust the position of the protective cover 34, the operator can manually or automatically drive the protective cover 34 to rotate on the paper roll holder 31. During the rotation, the semicircular panel 341 will move accordingly to block or expose different parts of the rewinding roller 32. The design of the protective cover 34 effectively blocks the dangerous area of ​​the rewinding roller 32 and reduces the risk of injury to the operator. At the same time, through the flexible rotation design, it ensures both ease of operation and safety performance.

[0026] Furthermore, a first limit stop block 311 and a second limit stop block 312 are provided on the paper roll holder 31. When the protective cover 34 rotates to the first position, the protective cover 34 abuts against the first limit stop block 311, and the first limit stop block 311 is used to limit the rotation of the protective cover 34 in the first position toward the direction away from the second position; when the protective cover 34 rotates to the second position, the protective cover 34 abuts against the second limit stop block 312, and the second limit stop block 312 is used to limit the rotation of the protective cover 34 in the second position toward the direction away from the first position. It is understandable that during the rotation of the protective cover 34, the protective cover 34 will gradually approach the first limit block 311 or the second limit block 312. Once the protective cover 34 rotates to the first position or the second position, it will contact the corresponding first limit block 311 or the second limit block 312. This contact will generate a physical resistance to prevent the protective cover 34 from continuing to rotate. Under the action of the first limit block 311 or the second limit block 312, the protective cover 34 will remain at the corresponding first position or second position until the protective cover 34 is controlled to rotate in the opposite direction.

[0027] Furthermore, the protective cover 34 includes two connecting sleeves 343 respectively sleeved on both ends of the rewinding roller 32, and two connecting rods 342 respectively connected between the two connecting sleeves 343 and the semicircular panel 341; the connecting sleeve 343 includes an inner ring sleeve 3432 and an outer ring sleeve 3431, the inner ring sleeve 3432 is sleeved on the outer side of the rewinding roller 32, the outer ring sleeve 3431 is sleeved on the outer side of the inner ring sleeve 3432, the connecting rod 342 is connected to the outer ring sleeve 3431, and the outer peripheral side of the outer ring sleeve 3431 is provided with abutment blocks 3437, and the abutment blocks 3437 are used to When the protective cover 34 is in the first position, it abuts against the first limit block 311, and the abutment block 3437 is also used to abut against the second limit block 312 when the protective cover 34 is in the second position; a clutch assembly is arranged between the inner ring sleeve 3432 and the outer ring sleeve 3431, and when the protective cover 34 rotates to the first position or the second position, the clutch assembly separates the power between the inner ring sleeve 3432 and the outer ring sleeve 3431; when the protective cover 34 rotates to the first position or the second position, the clutch assembly connects the power between the inner ring sleeve 3432 and the outer ring sleeve 3431.

[0028] Specifically, the clutch assembly includes a plurality of first telescopic grooves 3433 arranged on the inner circumference of the outer ring sleeve 3431, a plurality of second telescopic grooves 3434 arranged on the outer circumference of the inner ring sleeve 3432, and a telescopic block 3435 and a spring 3436 arranged in the first telescopic groove 3433. The telescopic block 3435 is connected to the first telescopic groove 3433 through the spring 3436. The spring 3436 is used to provide elastic force for the telescopic block 3435 to protrude out of the first telescopic groove 3433. The first telescopic groove 3433 corresponds one to one with the second telescopic groove 3434. When the protective cover 34 rotates between the first position and the second position, the telescopic block 3435 extends out of the first telescopic groove 3433 and into the second telescopic groove 3434, so that the inner ring sleeve 3432 can drive the outer ring sleeve 3431 to rotate; when the protective cover 34 rotates to the first position or the second position, the abutment block 3437 abuts against the first limit block 311 or the second limit block 312, and the rotation of the outer ring sleeve 3431 is limited. The continued rotation of the inner ring sleeve 3432 will cause the telescopic block 3435 to squeeze the spring 3436 to be retracted into the first telescopic groove 3433, and the inner ring sleeve 3432 and the outer ring sleeve 3431 rotate relative to each other.

[0029] Optionally, a plurality of first telescopic grooves 3433 are evenly arranged along the inner circumference of the outer ring sleeve 3431, and a plurality of second telescopic grooves 3434 are evenly arranged along the outer circumference of the inner ring sleeve 3432. Optionally, one end of the telescopic block 3435 away from the first telescopic groove 3433 is a spherical curved surface, so that when the outer ring sleeve 3431 is limited and the inner ring sleeve 3432 continues to rotate, the spherical curved surface of the telescopic block 3435 is squeezed by the inner ring sleeve 3432 and shrinks in the first telescopic groove 3433.

[0030] Furthermore, the first door driver 22 includes a first motor 221, a first screw 222 and a first nut 223 with coincident rotation center axes, the first screw 222 is connected to the output shaft of the first motor 221, and the first nut 223 is screwed to the first screw 222; two first door drivers 22 are provided, and the first nuts 223 in the two first door drivers 22 are respectively connected to the two sides of the first protective door 21.

[0031] Specifically, an electromagnetic clutch 224 is provided between the first motor 221 and the first screw 222, and the electromagnetic clutch 224 and the first motor 221 share the same power supply; when the electromagnetic clutch 224 is powered on, the power between the first motor 221 and the first screw 222 is connected; when the electromagnetic clutch 224 is powered off, the power between the first motor 221 and the first screw 222 is disconnected. Optionally, the axis direction of the first screw 222 is the vertical direction, and the first protective door 21 of this embodiment is opened or closed by lifting.

[0032] It is understandable that the first screw 222 is connected to the output shaft of the first motor 221, and the first nut 223 is screwed onto the first screw 222. When the first motor 221 rotates, the first screw 222 and the first nut 223 cooperate to convert the rotational motion of the first motor 221 into the linear motion of the first nut 223, thereby driving the first protective door 21 to open and close. It should be explained that the electromagnetic clutch 224 is a device that uses electromagnetic force to transmit or cut off torque. The electromagnetic clutch 224 and the first motor 221 share the same power supply. When the electromagnetic clutch 224 is powered on, it will generate electromagnetic force to connect the power between the first motor 221 and the first screw 222, so that the power of the first motor 221 can be transmitted to the first screw 222, thereby driving the first nut 223 and the first protective door 21 to move; when the electromagnetic clutch 224 is powered off, the electromagnetic force disappears, and the power between the first motor 221 and the first screw 222 is separated. The user can manually open and close the first protective door 21 without damaging the life of the first motor 221.

[0033] In some embodiments, the feeding mechanism 1 includes a first floor mat, which is arranged on the ground around the bottom of the paper roll stand 31, and a first pressure sensor is arranged inside the first floor mat; when the first pressure sensor detects that the pressure on the first floor mat is greater than the first preset pressure, the control system controls the rewinding driver 33 to stop working. It can be understood that in the operation of the rewinder, feeding is a key step, which involves placing the paper roll to be rewound on the paper roll stand 31. The rewinding roller 32 should be stationary during this operation. The purpose of designing the first floor mat and the first pressure sensor is to monitor the pressure of the paper roll when it is placed in real time. Once it is detected that the pressure on it is greater than the first preset pressure, the rewinding driver 33 is stopped immediately to avoid potential safety hazards. Optionally, the first preset pressure is 30kg, that is, the area on the first floor mat is defined as a dangerous area, and the operation of the rewinder is stopped if there are people in the area.

[0034] In some embodiments, the rewinding mechanism 3 includes a second floor mat, which is arranged on the ground around the bottom of the rewinding frame, and a second pressure sensor is arranged inside the second floor mat; when the second pressure sensor detects that the pressure on the second floor mat is greater than the second preset pressure, the control system controls the rewinding driver 33 to stop working. It can be understood that during the operation of the rewinding machine, the rewinding operation of the rewinding mechanism 3 is a key step. During this operation, the rewinding roller 32 should be stationary. The purpose of designing the second floor mat and the second pressure sensor is to monitor the pressure of the paper roll in real time when it is placed. Once it is detected that the pressure thereon is greater than the second preset pressure, the rewinding driver 33 is stopped immediately to avoid potential safety hazards. Optionally, the second preset pressure is 30kg, that is, the area on the second floor mat is defined as a dangerous area, and the operation of the rewinding machine is stopped if there are people in the area.

[0035] In some embodiments, a bridge 5 is provided between the feeding mechanism 1 and the rewinding mechanism 3. The bridge 5 is provided outside the first protective net 2 and the second protective net 4. The length direction of the bridge 5 is parallel to the axis direction of the feeding roller 12 and the axis direction of the rewinding roller 32. The bridge 5 includes at least two supporting parts abutting against the ground, and a raised part provided between the supporting parts and raised away from the ground, and a paper feeding space is formed between the raised part and the ground. The feeding mechanism 1 includes a first transfer roller close to the paper feeding space, and the rewinding mechanism 3 includes a second transfer roller close to the paper feeding space. One end of the base paper roll placed on the feeding roller 12 passes through the first transfer roller, the paper feeding space, and the second transfer roller in sequence before being wound on the rewinding roller 32. It can be understood that the design of the bridge 5 takes into account the needs of paper roll transmission, and the raised part is supported by at least two supporting parts to form a paper feeding space. The design of the raised part enables the paper roll to maintain a certain height above the ground during transmission, avoiding friction and damage with the ground. At the same time, the arrangement of the first transfer roller and the second transfer roller enables the paper roll to smoothly transfer from the feeding mechanism 1 to the rewinding mechanism 3. The bridge 5 not only provides a stable path for paper roll transmission, but also provides a safe observation area for the staff, who can observe the entire transmission process on the bridge 5 and promptly discover and deal with potential safety hazards.

[0036] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A rewinding machine with safety protection function, characterized in that: The invention comprises a control system and a feeding mechanism, a feeding protection mechanism, a rewinding mechanism and a rewinding protection mechanism electrically connected to the control system; the feeding mechanism comprises a paper placing rack, on which a feeding roller for placing a base paper roll is rotatably provided; the rewinding mechanism comprises a paper reeling rack, on which a rewinding roller for winding paper is rotatably provided, and a rewinding driver for driving the rewinding roller to rotate; The feeding mechanism and the rewinding mechanism are arranged at intervals, the feeding protection mechanism comprises a first protection net surrounding the feeding mechanism, and a first protection door arranged on the first protection net, and the control system is used to control the first protection door to be opened or closed; the rewinding protection mechanism comprises a second protection net surrounding the rewinding mechanism, and a second protection door arranged on the second protection net, and the control system is also used to control the second protection door to be opened or closed; The control system includes a first door driver transmission-connected to the first protective door, a second door driver transmission-connected to the second protective door, and a control device for controlling the first door driver, the second door driver, and the rewinding driver. The first door driver is provided with a first encoder, and the second door driver is provided with a second encoder. The control device detects the opening and closing states of the first protective door and the second protective door respectively through the first encoder and the second encoder. When any one of the first protective door and the second protective door is in an open state, the control device controls the rewinding driver to stop working.

2. A rewinding machine with safety protection function according to claim 1, characterized in that: The rewinding mechanism also includes a protective cover, which is rotatably disposed on the paper roll stand, and includes a semicircular panel with its center facing the rewinding roller, and has a first position and a second position in the rotation stroke of the protective cover, and when the protective cover rotates to the first position, the semicircular panel blocks the side of the rewinding roller away from the feeding mechanism; when the protective cover rotates to the second position, the semicircular panel blocks the lower side of the rewinding roller.

3. A rewinding machine with safety protection function according to claim 2, characterized in that: The paper roll holder is provided with a first limit stop and a second limit stop. When the protective cover rotates to the first position, the protective cover abuts against the first limit stop, and the first limit stop is used to limit the rotation of the protective cover in the first position toward the direction away from the second position; when the protective cover rotates to the second position, the protective cover abuts against the second limit stop, and the second limit stop is used to limit the rotation of the protective cover in the second position toward the direction away from the first position.

4. A rewinding machine with safety protection function according to claim 3, characterized in that: The protective cover comprises two connecting sleeves respectively sleeved on both ends of the rewinding roller, and two connecting rods respectively connected between the two connecting sleeves and the semicircular panel; The connecting sleeve includes an inner ring sleeve and an outer ring sleeve, the inner ring sleeve is arranged on the outside of the rewinding roller, the outer ring sleeve is arranged on the outside of the inner ring sleeve, the connecting rod is connected to the outer ring sleeve, and an abutment block is arranged on the outer peripheral side of the outer ring sleeve, the abutment block is used to abut with the first limit block when the protective cover is in the first position, and the abutment block is also used to abut with the second limit block when the protective cover is in the second position; a clutch assembly is arranged between the inner ring sleeve and the outer ring sleeve, when the protective cover rotates to the first position or the second position, the clutch assembly separates the power between the inner ring sleeve and the outer ring sleeve; when the protective cover rotates to the first position or the second position, the clutch assembly connects the power between the inner ring sleeve and the outer ring sleeve.

5. The rewinding machine with safety protection function according to claim 4, characterized in that: The clutch assembly includes a plurality of first telescopic grooves arranged on the inner circumference of the outer ring sleeve, a plurality of second telescopic grooves arranged on the outer circumference of the inner ring sleeve, and a telescopic block and a spring arranged in the first telescopic groove, the telescopic block is connected to the first telescopic groove through the spring, and the spring is used to provide the telescopic block with elastic force to protrude out of the first telescopic groove, and the first telescopic groove corresponds one-to-one to the second telescopic groove.

6. The rewinding machine with safety protection function according to claim 1, characterized in that: The first door driver includes a first motor, a first screw and a first nut with coincident rotation center axes, the first screw is connected to the output shaft of the first motor, and the first nut is screwed to the first screw; two first door drivers are provided, and the first nuts in the two first door drivers are respectively connected to the two sides of the first protective door.

7. A rewinding machine with safety protection function according to claim 6, characterized in that: An electromagnetic clutch is arranged between the first motor and the first screw, and the electromagnetic clutch and the first motor share the same power supply; when the electromagnetic clutch is powered on, the power between the first motor and the first screw is connected; when the electromagnetic clutch is powered off, the power between the first motor and the first screw is separated.

8. The rewinding machine with safety protection function according to claim 1, characterized in that: The feeding mechanism includes a first ground mat, which is arranged on the ground around the bottom of the paper roll rack, and a first pressure sensor is provided inside the first ground mat; when the first pressure sensor detects that the pressure borne on the first ground mat is greater than a first preset pressure, the control system controls the rewinding drive to stop working.

9. The rewinding machine with safety protection function according to claim 1, characterized in that: The rewinding mechanism includes a second floor mat, which is arranged on the ground around the bottom of the rewinding frame, and a second pressure sensor is arranged inside the second floor mat; when the second pressure sensor detects that the pressure borne on the second floor mat is greater than a second preset pressure, the control system controls the rewinding drive to stop working.

10. The rewinding machine with safety protection function according to claim 1, characterized in that: A bridge is provided between the feeding mechanism and the rewinding mechanism, the bridge is provided outside the first protection net and the second protection net, and the length direction of the bridge is parallel to the axial direction of the feeding roller and the axial direction of the rewinding roller; The bridge includes at least two supporting parts abutting against the ground, and a raised part arranged between the supporting parts and raised in a direction away from the ground, and a paper feeding space is formed between the raised part and the ground; The feeding mechanism includes a first transfer roller close to the paper feeding space, and the rewinding mechanism includes a second transfer roller close to the paper feeding space. One end of the base paper roll placed on the feeding roller passes through the first transfer roller, the paper feeding space, and the second transfer roller in sequence and is then wound around the rewinding roller.

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