CN223467959U - A multifunctional rewinding device with double core options - Google Patents

Abstract

The utility model relates to a double-core selectable multifunctional rewinding device, which relates to the technical field of rewinding machines and comprises a machine base, wherein a left support and a right support are fixedly arranged on the machine base, a rewinding fixed roller is rotatably arranged on the left support, a core pipe frame is arranged below the rewinding fixed roller, the top of the core pipe frame is an arc surface, a group of switching arms are rotatably arranged on the right support, a rewinding roller is rotatably arranged between the switching arms, a rewinding roller gap is formed between the rewinding roller and the rewinding fixed roller, a switching assembly is jointly arranged between the switching arms and the right support, and the switching assembly is used for adjusting the position relation between the rewinding roller and the rewinding fixed roller. The utility model has the effects of simplifying the working mode switching process of the rewinder and shortening the working mode switching time of the rewinder.

Description

Double-core selectable multifunctional rewinding device

Technical Field

The utility model relates to the technical field of rewinders, in particular to a double-core selectable multifunctional rewinder.

Background

Rewinding machines are devices for winding paper, film or other strips into reels of specific dimensions, which are currently divided into two modes of operation, one in which the strip is wound on a core tube to form a mandrel, and the other in which the strip is wound into a coreless tube.

The Chinese patent with the authorized bulletin number of CN216129085U in the related art provides a rewinding machine which is convenient for switching the cored and coreless working modes, and comprises an upper rewinding roller and a lower rewinding roller, wherein a conveying mechanism is arranged between the upper rewinding roller and the lower rewinding roller, a moving mechanism is arranged on the conveying mechanism, and the moving mechanism is used for driving the conveying mechanism to be close to or far away from a nip between the upper rewinding roller and the lower rewinding roller. When the working mode of the rewinder is a coreless mode, the moving mechanism drives the conveying mechanism to be far away from the nip between the upper rewinder roll and the lower rewinder roll, and then the upper rewinder roll and the lower rewinder roll are close.

In the process of realizing the application, the inventor finds that at least the following problems exist in the technology that when the coreless mode is switched to the core mode, the roll gap between the upper rewinding roller and the lower rewinding roller needs to be enlarged firstly, then the conveying mechanism is regulated to be close to the roll gap between the upper rewinding roller and the lower rewinding roller through the moving mechanism, when the coreless mode is switched to the coreless mode, the conveying mechanism is required to be far away from the roll gap between the upper rewinding roller and the lower rewinding roller through the moving mechanism firstly, and then the roll gap between the upper rewinding roller and the lower rewinding roller is reduced, so that the switching time of the core mode and the coreless mode of the rewinder is long, and the mode switching step of the rewinder is complicated.

Disclosure of utility model

In order to simplify the working mode switching process of the rewinder and shorten the working mode switching time of the rewinder, the application provides a double-core selectable multifunctional rewinder.

The application provides a double-core selectable multifunctional rewinding device which adopts the following technical scheme:

The utility model provides a multi-functional rewinding unit that two cores are optional, includes the frame, fixed left socle and the right branch frame of setting on the frame, rotate on the left socle and set up the rewinding fixed roller, the rewinding fixed roller below sets up the core pipe support, core pipe support top is the arcwall face, rotate on the right branch frame and set up a set of switching arm, rotate between the switching arm and set up the rewinding movable roller, form the rewinding roll gap between rewinding movable roller and the rewinding fixed roller, set up the switching element jointly between switching arm and the right branch frame, the switching element is used for adjusting the positional relationship of rewinding movable roller and rewinding fixed roller.

By adopting the technical scheme, when the working mode of the rewinder is the cored mode, the switching component drives the switching arm to rotate, so that the rewinder roller moves to the obliquely lower part of the rewinder fixed roller, at the moment, the rewinder fixed roller is the rewinder upper roller, the rewinder roller is the rewinder lower roller, the core pipe is arranged in the rewinder roller gap between the rewinder fixed roller and the rewinder roller through the core pipe frame, when the working mode of the rewinder is the coreless mode, the switching component drives the switching arm to rotate, so that the rewinder roller moves to the obliquely upper part of the rewinder fixed roller, at the moment, the rewinder upper roller is the rewinder lower roller, and the core pipe cannot be arranged in the rewinder roller gap between the rewinder fixed roller and the rewinder roller through the core pipe frame.

Preferably, the machine base is fixedly provided with a conveying motor, an output shaft of the conveying motor is fixedly provided with a driving roller, the machine base is rotatably provided with a plurality of supporting rollers, the driving roller and the supporting rollers are mutually parallel, one side, far away from the right bracket, of the core tube frame is provided with a conveying belt, and the conveying belt is sleeved on the driving roller and the supporting rollers together.

Through adopting above-mentioned technical scheme, after the transport motor starts, the transport motor drives the driving roller and rotates, and the driving roller drives the conveyer belt and removes, makes the conveyer belt remove the core pipe to the core pipe frame.

Preferably, the left support is fixedly provided with a core support, the core support is provided with a core pressing groove, a core pressing block is slidably arranged in the core pressing groove, a core spring is arranged between the core pressing groove and the core pressing block, the core pressing block is rotatably provided with a core pressing roller, the core pressing roller is located on one side, far away from the conveyor belt, of the rewinding fixed roller, and the rewinding movable roller are arranged in parallel.

Through adopting above-mentioned technical scheme, when the working mode of rewinding machine is core mode, the rewinding movable roller is located the oblique below of rewinding fixed roller, and the rewinding roll gap that forms between rewinding movable roller and the rewinding fixed roller is located there is core compression roller one side, in the in-process that forms there is the core reel in the rewinding roll gap, there is the core compression roller under the effect of core spring to support and press on there is the core reel, makes there is the core reel restriction between rewinding movable roller, rewinding fixed roller and there is the core compression roller.

Preferably, a coreless support is fixedly arranged between the switching arms, a coreless pressing groove is formed in the coreless support, a coreless pressing block is slidably arranged in the coreless pressing groove, a coreless spring is arranged between the coreless pressing groove and the coreless pressing block, a coreless pressing roller is rotatably arranged on the coreless pressing block, the coreless pressing roller is located on one side, far away from the conveyor belt, of the rewinding fixed roller, and the coreless pressing roller, the rewinding fixed roller and the rewinding movable roller are arranged in parallel.

By adopting the technical scheme, when the working mode of the rewinder is the coreless mode, the rewinder moving roller is positioned obliquely above the rewinder fixed roller, the rewinder roller gap formed between the rewinder moving roller and the rewinder fixed roller is positioned at one side of the coreless pressing roller, and the coreless pressing roller is propped against the coreless winding drum under the action of the coreless spring in the process of forming the coreless winding drum in the rewinder roller gap, so that the coreless winding drum is limited among the rewinder moving roller, the rewinder fixed roller and the coreless pressing roller.

Preferably, the rewinding fixed roller comprises a rewinding fixed cylinder and a rewinding fixed shell, the rewinding fixed cylinder is fixedly arranged on the left bracket, the rewinding fixed shell is sleeved on the rewinding fixed cylinder, the inner wall of the rewinding fixed shell is mutually attached to the outer wall of the rewinding fixed cylinder, the rewinding fixed shell is rotationally connected with the rewinding fixed cylinder, a core air cavity is arranged in the rewinding fixed cylinder, a core air channel is formed in the inner wall of the core air cavity, the core air channel penetrates through the outer wall of the rewinding fixed cylinder, and a plurality of core air holes are formed in the rewinding fixed shell and are used for being mutually communicated with the core air channel.

By adopting the technical scheme, when the working mode of the rewinder is a core mode, the rewinder moving roller is positioned obliquely below the rewinder fixed roller, the core air duct faces the rewinder roller gap formed between the rewinder moving roller and the rewinder fixed roller, the rewinder fixed roller rotates in the process of forming the core winding drum in the rewinder roller gap, the rewinder fixed roller is static, and the core air cavity is communicated with the vacuumizing equipment in the process of realizing the winding of the core winding drum, so that the right core air hole covered by the core air cavity has an adsorption effect on the strip, the tail of the strip subjected to the previous rewinding is disconnected, the strip end is curled in the rewinder roller gap, and the curled strip end forms a new winding drum along with the continuous rotation of the rewinder fixed roller and the rewinder moving roller.

Preferably, the rewinding roller comprises a rewinding cylinder and a rewinding shell, the rewinding shell is fixedly arranged between the switching arms, the rewinding shell is sleeved on the rewinding cylinder, the inner wall of the rewinding shell is mutually attached to the outer wall of the rewinding cylinder, the rewinding shell is rotationally connected with the rewinding cylinder, a coreless air cavity is arranged in the rewinding cylinder, a coreless air channel is formed in the inner wall of the coreless air cavity, the coreless air channel penetrates through the outer wall of the rewinding cylinder, and a plurality of coreless air holes are formed in the rewinding shell and are used for being mutually communicated with the coreless air channel.

By adopting the technical scheme, when the working mode of the rewinder is the coreless mode, the rewinder moving roller is positioned obliquely above the rewinder fixed roller, the coreless air duct faces the rewinder roller gap formed between the rewinder moving roller and the rewinder fixed roller, the rewinder moving shell rotates in the process of forming the coreless winding drum in the rewinder roller gap, the rewinder moving drum is static, the coreless air cavity is communicated with the vacuumizing equipment in the process of realizing the winding of the coreless winding drum, the coreless air hole covered by the coreless air cavity has an adsorption effect on the strip, the tail part of the strip which is completed in the previous rewinding is disconnected, the strip end is curled in the rewinder roller gap, and the curled strip end forms a new winding drum along with the continued rotation of the rewinder fixed roller and the rewinder moving shell.

Preferably, the switching assembly comprises a switching shaft, a switching gear and a switching rack, the switching shaft penetrates through the switching arm, the switching shaft is fixedly connected with the switching arm, the switching shaft is rotationally connected with the right support, the switching gear is sleeved on the switching shaft, the switching gear is fixedly connected with the switching shaft, the switching rack is arranged on the right support in a sliding mode, and the switching rack is meshed with the switching gear.

By adopting the technical scheme, the switching rack moves to drive the switching gear to rotate, the switching gear rotates to drive the switching shaft to rotate, and the switching shaft rotates to drive the switching arm to rotate, so that the switching arm drives the rewinding roller to move, and the effect that the rewinding roller and the rewinding fixed roller change in position is realized.

Preferably, the switching assembly further comprises a switching motor, a switching block and a switching screw rod, the right bracket is provided with a switching groove, the switching motor is fixedly arranged in the switching groove, an output shaft of the switching motor is fixedly connected with one end of the switching screw rod, the other end of the switching screw rod is rotationally connected with the inner wall of the switching groove, the switching block is glidingly arranged in the switching groove, the switching block is in threaded connection with the switching screw rod, and the switching block is fixedly connected with the switching rack.

By adopting the technical scheme, the switching motor is started to drive the switching screw to rotate, the switching screw rotates to drive the switching block to move along the switching groove, and the switching block moves to drive the switching rack to move.

In summary, the present application includes at least one of the following beneficial technical effects:

1. The machine seat, the left bracket, the right bracket, the rewinding fixed roller, the core pipe rack, the arc surface, the switching arm, the rewinding movable roller, the rewinding roller gap and the switching assembly are arranged, so that the switching time of the working mode of the rewinding machine is shortened, and the switching process of the working mode of the rewinding machine is simplified;

2. The winding drum is limited in the rewinding roller gap for rewinding by arranging a core support, a core pressing groove, a core pressing block, a core spring, a core pressing roller, a coreless support, a coreless pressing groove, a coreless pressing block, a coreless spring and a coreless pressing roller;

3. The strip winding effect is achieved by arranging a rewinding fixed cylinder, a rewinding fixed shell, a cored air cavity, a cored air duct, a cored air hole, a rewinding moving cylinder, a rewinding moving shell, a coreless air cavity, a coreless air duct and a coreless air hole.

Drawings

Fig. 1 is a schematic structural diagram of a dual-core optional multi-functional rewinding device in a coreless mode according to an embodiment of the present application.

Fig. 2 is an enlarged view of a portion a in fig. 1.

Fig. 3 is a cross-sectional view showing the positional relationship of the rewinding fixed roller and the rewinding movable roller in the coreless mode in the embodiment of the present application.

Fig. 4 is a schematic structural diagram of a dual-core alternative multi-functional rewinding device in a core-in mode according to an embodiment of the present application.

Fig. 5 is an enlarged view of a portion B in fig. 4.

Fig. 6 is a cross-sectional view showing the positional relationship of the rewinding fixed roller and the rewinding movable roller in the core mode in the embodiment of the present application.

Fig. 7 is a schematic diagram showing the positional relationship between a conveyor belt and a core frame in an embodiment of the present application.

Fig. 8 is a cross-sectional view showing the connection relationship of the right bracket and the switching assembly in the embodiment of the present application.

The reference numerals are 1, a machine seat, 11, a left bracket, 12, a right bracket, 2, a rewinding fixed roller, 21, a rewinding fixed cylinder, 211, a cored air cavity, 213, a cored air duct, 22, a rewinding fixed shell, 221, a cored air hole, 3, a rewinding movable roller, 31, a rewinding movable cylinder, 311, a coreless air cavity, 313, a coreless air duct, 32, a rewinding movable shell, 321, a coreless air hole, 4, a rewinding roller gap, 5, a core tube bracket, 51, an arc surface, 6, a switching assembly, 61, a switching shaft, 62, a switching gear, 63, a switching rack, 64, a switching motor, 65, a switching block, 66, a switching screw, 67, a switching groove, 68, a switching arm, 7, a conveyor belt, 71, a conveying motor, 72, a driving roller, 73, a supporting roller, 8, a cored press roll, 81, a cored press block, 82, a cored spring, 83, a cored press groove, 84, a coreless bracket, 9, a coreless press roll, 91, a coreless press block, 92, a coreless spring, a coreless press groove, a coreless bracket 94 and a coreless bracket.

Detailed Description

The application is described in further detail below with reference to fig. 1-8.

The embodiment of the application discloses a double-core selectable multifunctional rewinding device. Referring to fig. 1 to 8, the portable device comprises a stand 1, and a left bracket 11 and a right bracket 12 are mounted on the stand 1. The left bracket 11 is rotatably provided with a rewinding fixed roller 2, a core pipe rack 5 is arranged below the rewinding fixed roller 2, and the top of the core pipe rack 5 is an arc-shaped surface 51. A group of switching arms 68 are rotatably arranged on the right bracket 12, and a rewinding roller 3 is rotatably arranged between the switching arms 68. A rewinding roller gap 4 is formed between the rewinding moving roller 3 and the rewinding fixed roller 2. The switching component 6 is installed between the switching arm 68 and the right bracket 12, and the switching component 6 is used for adjusting the position relation between the rewinding moving roller 3 and the rewinding fixed roller 2. When the working mode of the rewinder is the cored mode, the switching component 6 drives the switching arm 68 to rotate, so that the rewinder moving roller 3 moves to the obliquely lower side of the rewinder fixed roller 2. At this time, the rewinding fixed roller 2 is a rewinding upper roller, the rewinding movable roller 3 is a rewinding lower roller, and the core tube is arranged in a rewinding roller gap 4 between the rewinding fixed roller 2 and the rewinding movable roller 3 through the core tube frame 5. When the working mode of the rewinder is the coreless mode, the switching component 6 drives the switching arm 68 to rotate, so that the rewinder moving roller 3 moves to the obliquely upper side of the rewinder fixed roller 2. At this time, the rewinding roller 3 is an upper rewinding roller, the top rewinding roller is a lower rewinding roller, and the core tube cannot be placed in the rewinding roller gap 4 between the rewinding fixed roller 2 and the rewinding roller 3 through the core tube frame 5. Therefore, when the coreless mode and the core mode of the rewinder are mutually switched, the switching assembly 6 only needs to drive the switching arm 68 to rotate, the switching time of the working mode of the rewinder is shortened, and the switching process of the working mode of the rewinder is simplified.

Referring to fig. 1 and 7, a transfer motor 71 is mounted on a machine base 1, and a driving roller 72 is mounted on an output shaft of the transfer motor 71. The machine base 1 is rotatably provided with a plurality of supporting rollers 73, and the driving roller 72 and the supporting rollers 73 are mutually parallel. The driving roller 72 and the supporting roller 73 are sleeved with a conveying belt 7, and the conveying belt 7 is positioned on one side of the core pipe frame 5 far away from the right bracket 12. When the conveying motor 71 is started, the conveying motor 71 drives the driving roller 72 to rotate, and the driving roller 72 drives the conveying belt 7 to move, so that the conveying belt 7 moves the core pipe to the core pipe frame 5.

In order to limit the winding drum to the rewinding roller gap 4 for rewinding, referring to fig. 1 to 6, the left bracket 11 is provided with a core bracket 84, and the coreless bracket 94 is provided between the switching arms 68. The cored bracket 84 is provided with a cored slot 83, and the coreless bracket 94 is provided with a coreless slot 93. The core pressing groove 83 is slidably provided with a core pressing block 81, and the coreless pressing groove 93 is slidably provided with a coreless pressing block 91. A core spring 82 is installed between the core pressing groove 83 and the core pressing block 81, and a coreless spring 92 is installed between the coreless pressing groove 93 and the coreless pressing block 91. The cored press roll 8 is rotatably arranged on the cored press block 81, and the coreless press roll 9 is rotatably arranged on the coreless press block 91. The cored press roll 8 and the coreless press roll 9 are both positioned on one side of the rewinding fixed roll 2 far away from the conveyor belt 7, and the cored press roll 8, the coreless press roll 9, the rewinding fixed roll 2 and the rewinding movable roll 3 are arranged in parallel. When the working mode of the rewinder is a cored mode, the rewinder moving roller 3 is positioned obliquely below the rewinder fixed roller 2, the rewinder roller gap 4 formed between the rewinder moving roller 3 and the rewinder fixed roller 2 is positioned at one side of the cored pressing roller 8, and the cored pressing roller 8 is pressed against the cored roller under the action of the cored spring 82 in the process of forming the cored roller in the rewinder roller gap 4, so that the cored roller is limited among the rewinder moving roller 3, the rewinder fixed roller 2 and the cored pressing roller 8. When the working mode of the rewinder is a coreless mode, the rewinder moving roller 3 is positioned obliquely above the rewinder fixed roller 2, the rewinder roller gap 4 formed between the rewinder moving roller 3 and the rewinder fixed roller 2 is positioned at one side of the coreless pressing roller 9, and the coreless pressing roller 9 is pressed against the coreless winding drum under the action of the coreless spring 92 in the process of forming the coreless winding drum in the rewinder roller gap 4, so that the coreless winding drum is limited among the rewinder moving roller 3, the rewinder fixed roller 2 and the coreless pressing roller 9.

In order to achieve the winding effect of the core winding drum at the winding roll gap 4, referring to fig. 1 to 6, the winding fixed roll 2 comprises a winding fixed roll 21 and a winding fixed roll 22, the winding fixed roll 21 is welded on the left bracket 11, the winding fixed roll 22 is sleeved on the winding fixed roll 21, the inner wall of the winding fixed roll 22 is mutually attached to the outer wall of the winding fixed roll 21, and the winding fixed roll 22 is rotationally connected with the winding fixed roll 21. A core air cavity 211 is arranged in the rewinding fixed cylinder 21, a core air channel 213 is arranged on the inner wall of the core air cavity 211, and the core air channel 213 penetrates through the outer wall of the rewinding fixed cylinder 21. The rewinding fixed housing 22 is provided with a plurality of cored air holes 221, and the cored air holes 221 are used for communicating with the cored air duct 213. When the working mode of the rewinder is the cored mode, the rewinder moving roller 3 is positioned obliquely below the rewinder fixed roller 2, the cored air duct 213 faces the rewinder roller gap 4 formed between the rewinder moving roller 3 and the rewinder fixed roller 2, and the rewinder fixed shell 22 rotates and the rewinder fixed cylinder 21 is static in the process of forming a cored reel in the rewinder roller gap 4. In the process of winding up the cored reel, the cored wind cavity 211 is communicated with a vacuumizing device, so that the right cored wind hole covered by the cored wind cavity 211 has an adsorption effect on the strip, the tail of the strip which is completed in the previous winding is broken, the end of the strip is curled in the winding nip, and the curled end of the strip is formed into a new reel along with the continuous rotation of the winding fixed shell 22 and the winding roller 3.

In order to achieve the winding effect of the coreless winding drum at the winding roller gap 4, referring to fig. 1 to 6, the winding roller 3 comprises a winding drum 31 and a winding drum 32, the winding drum 31 is welded between the switching arms 68, the winding drum 32 is sleeved on the winding drum 31, the inner wall of the winding drum 32 is attached to the outer wall of the winding drum 31, and the winding drum 32 is rotatably connected with the winding drum 31. The coreless air cavity 311 is arranged in the re-rolling cylinder 31, a coreless air channel 313 is arranged on the inner wall of the coreless air cavity 311, and the coreless air channel 313 penetrates through the outer wall of the re-rolling cylinder 31. The multi-roll shell 32 is provided with a plurality of coreless air holes 321, and the coreless air holes 321 are used for communicating with the coreless air duct 313. When the operation mode of the rewinder is the coreless mode, the rewinder moving roller 3 is positioned obliquely above the rewinder fixed roller 2, the coreless air duct 313 faces the rewinder roller gap 4 formed between the rewinder moving roller 3 and the rewinder fixed roller 2, and the rewinder shell 32 rotates and the rewinder moving roller 31 is static in the process of forming the coreless winding drum in the rewinder roller gap 4. In the process of winding up the coreless winding drum, the coreless wind cavity 311 is communicated with a vacuumizing device, so that the coreless wind hole 321 covered by the coreless wind cavity 311 has an adsorption effect on the strip, the tail of the strip which is wound up in the previous time is disconnected, the end of the strip is curled in a winding nip, and a new winding drum is formed by the curled end of the strip along with the continuous rotation of the winding fixed roller 2 and the winding movable shell 32.

In order to achieve the effect of the positional change of the rewinding moving roller 3 and the rewinding fixed roller 2, referring to fig. 1 to 8, the switching assembly 6 includes a switching shaft 61, a switching gear 62, a switching rack 63, a switching motor 64, a switching block 65, and a switching screw 66. The right bracket 12 is provided with a switching groove 67, the switching motor 64 is arranged in the switching groove 67, the output shaft of the switching motor 64 is welded with one end of the switching screw 66, and the other end of the switching screw 66 is rotatably connected with the inner wall of the switching groove 67. The switching block 65 is slidably arranged in the switching groove 67, the switching block 65 is in threaded connection with the switching screw 66, and the switching rack 63 is welded on the switching block 65. The switching shaft 61 is fixedly connected to the switching arm 68, and the switching shaft 61 is rotatably connected to the right bracket 12. The switching gear 62 is sleeved on the switching shaft 61, the switching gear 62 is welded with the switching shaft 61, and the switching rack 63 is meshed with the switching gear 62. The switching motor 64 is started to drive the switching screw 66 to rotate, the switching screw 66 rotates to drive the switching block 65 to move along the switching groove 67, and the switching block 65 moves to drive the switching rack 63 to move. The switching rack 63 moves to drive the switching gear 62 to rotate, the switching gear 62 rotates to drive the switching shaft 61 to rotate, and the switching shaft 61 rotates to drive the switching arm 68 to rotate, so that the switching arm 68 drives the rewinding roller 3 to move, and the effect that the rewinding roller 3 and the rewinding fixed roller 2 change in position is achieved.

The implementation principle of the dual-core selectable multifunctional rewinding device provided by the embodiment of the application is that when the working mode of the rewinding machine is a core mode, the switching motor 64 is started to enable the switching arm 68 to rotate, and the rewinding moving roller 3 is moved to the obliquely lower side of the rewinding fixed roller 2. At this time, the rewinding fixed roller 2 is a rewinding upper roller, the rewinding movable roller 3 is a rewinding lower roller, and the core tube is arranged in a rewinding roller gap 4 between the rewinding fixed roller 2 and the rewinding movable roller 3 through the core tube frame 5. When the operation mode of the rewinder is the coreless mode, the switching motor 64 is started to rotate the switching arm 68, and the rewinder roller 3 is moved obliquely above the rewinder fixed roller 2. At this time, the rewinding roller 3 is an upper rewinding roller, the top rewinding roller is a lower rewinding roller, and the core tube cannot be placed in the rewinding roller gap 4 between the rewinding fixed roller 2 and the rewinding roller 3 through the core tube frame 5. Therefore, when the coreless mode and the core mode of the rewinder are mutually switched, the switching assembly 6 only needs to drive the switching arm 68 to rotate, the switching time of the working mode of the rewinder is shortened, and the switching process of the working mode of the rewinder is simplified.

The above embodiments are not intended to limit the scope of the application, so that the equivalent changes of the structure, shape and principle of the application are covered by the scope of the application.

Claims (8)

1. The utility model provides a multi-functional rewinding device that duplex is optional, includes frame (1), fixed left socle (11) and right branch frame (12) that set up on frame (1), rotate on left socle (11) and set up rewinding fixed roll (2), rewinding fixed roll (2) below sets up core pipe support (5), core pipe support (5) top is arcwall face (51), wherein, rotate on right branch frame (12) and set up a set of switching arm (68), rotate between switching arm (68) and set up rewinding movable roll (3), form rewinding roll gap (4) between rewinding movable roll (3) and rewinding fixed roll (2), set up switching component (6) jointly between switching arm (68) and right branch frame (12), switching component (6) are used for adjusting rewinding movable roll (3) and rewinding fixed roll (2) positional relationship.

2. The double-core selectable multifunctional rewinding device according to claim 1, wherein a conveying motor (71) is fixedly arranged on the machine base (1), a driving roller (72) is fixedly arranged on an output shaft of the conveying motor (71), a plurality of supporting rollers (73) are rotatably arranged on the machine base (1), the driving roller (72) and the supporting rollers (73) are parallel to each other, a conveying belt (7) is arranged on one side, far away from the right bracket (12), of the core tube frame (5), and the conveying belt (7) is sleeved on the driving roller (72) and the supporting rollers (73) together.

3. The double-core selectable multifunctional rewinding device according to claim 2, wherein a core support (84) is fixedly arranged on the left support (11), a core pressing groove (83) is formed in the core support (84), a core pressing block (81) is slidably arranged in the core pressing groove (83), a core spring (82) is arranged between the core pressing groove (83) and the core pressing block (81), a core pressing roller (8) is rotatably arranged on the core pressing block (81), the core pressing roller (8) is located on one side, far away from a conveyor belt (7), of the rewinding fixed roller (2), and the core pressing roller (8), the rewinding fixed roller (2) and the rewinding movable roller (3) are arranged in parallel.

4. The double-core selectable multifunctional rewinding device as set forth in claim 2, wherein a coreless support (94) is fixedly arranged between the switching arms (68), coreless pressing grooves (93) are formed in the coreless support (94), coreless pressing blocks (91) are slidably arranged in the coreless pressing grooves (93), coreless springs (92) are arranged between the coreless pressing grooves (93) and the coreless pressing blocks (91), coreless pressing rollers (9) are rotatably arranged on the coreless pressing blocks (91), the coreless pressing rollers (9) are located on one side, far away from a conveyor belt (7), of the rewinding fixed roller (2), and the coreless pressing rollers (9), the rewinding fixed roller (2) and the rewinding movable roller (3) are arranged in parallel.

5. The double-core selectable multifunctional rewinding device according to claim 1, wherein the rewinding fixed roller (2) comprises a rewinding fixed cylinder (21) and a rewinding fixed shell (22), the rewinding fixed cylinder (21) is fixedly arranged on a left bracket (11), the rewinding fixed shell (22) is sleeved on the rewinding fixed cylinder (21), the inner wall of the rewinding fixed shell (22) is mutually attached to the outer wall of the rewinding fixed cylinder (21), the rewinding fixed cylinder (22) is rotationally connected with the rewinding fixed cylinder (21), a core air cavity (211) is arranged in the rewinding fixed cylinder (21), a core air channel (213) is formed in the inner wall of the core air cavity (211), the core air channel (213) penetrates through the outer wall of the rewinding fixed cylinder (21), a plurality of core air holes (221) are formed in the rewinding fixed cylinder (22), and the core air holes (221) are used for being mutually communicated with the core air channel (213).

6. The double-core selectable multifunctional rewinding device according to claim 1, wherein the rewinding roller (3) comprises a rewinding cylinder (31) and a rewinding shell (32), the rewinding cylinder (31) is fixedly arranged between the switching arms (68), the rewinding shell (32) is sleeved on the rewinding cylinder (31), the inner wall of the rewinding shell (32) is mutually attached to the outer wall of the rewinding cylinder (31), the rewinding shell (32) is rotationally connected with the rewinding cylinder (31), a coreless air cavity (311) is arranged in the rewinding cylinder (31), a coreless air channel (313) is formed in the inner wall of the coreless air cavity (311), the coreless air channel (313) penetrates through the outer wall of the rewinding cylinder (31), a plurality of coreless air holes (321) are formed in the rewinding shell (32), and the coreless air holes (321) are used for being mutually communicated with the coreless air channel (313).

7. The dual-core selectable multifunctional rewinding device according to claim 1, wherein the switching assembly (6) comprises a switching shaft (61), a switching gear (62) and a switching rack (63), the switching shaft (61) penetrates through the switching arm (68), the switching shaft (61) is fixedly connected with the switching arm (68), the switching shaft (61) is rotatably connected with the right bracket (12), the switching gear (62) is sleeved on the switching shaft (61), the switching gear (62) is fixedly connected with the switching shaft (61), the switching rack (63) is slidably arranged on the right bracket (12), and the switching rack (63) is meshed with the switching gear (62).

8. The dual-core selectable multifunctional rewinding device according to claim 7, wherein the switching assembly (6) further comprises a switching motor (64), a switching block (65) and a switching screw (66), the right support (12) is provided with a switching groove (67), the switching motor (64) is fixedly arranged in the switching groove (67), an output shaft of the switching motor (64) is fixedly connected with one end of the switching screw (66), the other end of the switching screw (66) is rotatably connected with the inner wall of the switching groove (67), the switching block (65) is slidably arranged in the switching groove (67), the switching block (65) is in threaded connection with the switching screw (66), and the switching block (65) is fixedly connected with the switching rack (63).