CN111960155A - Automatic tape splicing device and unreeling device with same - Google Patents

Abstract

The application relates to the field of unwinding equipment, in particular to an automatic belt splicing device and an unwinding device with the same. The automatic splicing device comprises: a base; the movable arm is arranged on the base; the compression roller is arranged on the movable arm; the cutter is arranged on the movable arm; the first driving device is used for driving the movable arm to move relative to the base so as to enable the pressing roller and the cutter to be close to the old material belt; the second driving device is used for driving the press roller to move relative to the movable arm so as to press the old material belt to the new material belt through the press roller; and the third driving device is used for driving the cutter to move relative to the movable arm so as to cut off the old material belt. The first driving device drives the movable arm to move to a preset position, and after the movable arm reaches the preset position, the second driving device and the third driving device drive the press roller and the cutter from the preset position respectively, so that the cutting position of the splicing tape is ensured to be fixed, and the position and the length of the splice can be accurately controlled.

Description

Automatic tape splicing device and unwinding device having the same

technical field

The present application relates to the field of unwinding equipment, in particular, to an automatic tape splicing device and an unwinding device having the same.

Background technique

In the unwinding device, when the material roll on the barrel is finished and the material barrel needs to be replaced, the old material tape needs to be bonded to the new material roll, and the connection between the old material tape and the old material barrel is cut off.

SUMMARY OF THE INVENTION

The present application aims to provide an automatic tape splicing device and an unwinding device having the same, which are used to solve the problem that the splicing tape is cut off during unwinding.

The embodiments of the present application are implemented as follows:

In a first aspect, an embodiment of the present application provides an automatic tape splicing device, which includes:

pedestal;

a movable arm, mounted on the base;

a pressing roller, mounted on the movable arm;

a cutter, mounted on the movable arm;

a first driving device, used for driving the movable arm to move relative to the base, so that the pressing roller and the cutter are close to the old material belt;

a second driving device for driving the pressing roller to move relative to the movable arm, so as to press the old material strip toward the new material roll through the pressing roller;

The third driving device is used for driving the cutter to move relative to the movable arm, so as to cut the old material tape.

The automatic tape splicing device provided by the present application is actuated by three driving devices respectively; the first driving device drives the movable arm to move to a predetermined position, and after reaching the predetermined position; the second driving device drives the pressing roller to extend from the predetermined position to remove the old The material belt is pressed against the new material roll, and the pressing position of the pressing roller is determined; the third driving device drives the cutter from the predetermined position to extend the cutting material belt backward, and the cutting position of the cutter is determined. The automatic tape splicing device provided by the present application has a certain position for splicing and cutting, and can precisely control the joint position and the joint length.

In an embodiment of the present application, optionally, the movable arm is rotatably connected to the base, and the first driving device is used to drive the movable arm to rotate relative to the base.

The movable arm is set as a rotating belt splicing structure. The movable arm rotates between the base and the new material roll. The pressing roller and the cutter approach the old material belt from bottom to top. The movement path is clear and can be positioned at a predetermined position.

In an embodiment of the present application, optionally, the movable arm is movably connected to the base, and the first driving device is used to drive the movable arm to linearly move relative to the base.

The movable arm is set as a direct-insertion belt splicing structure, and the movable arm approaches the old material tape obliquely upward along a straight line, the movement path is clear, and the inclination of the movable arm is certain, and the positioning is accurate.

In an embodiment of the present application, optionally, the second driving device is configured to drive the pressure roller to move linearly relative to the movable arm, and the linear movement direction of the pressure roller and the movable arm is the same .

By making the moving direction of the pressing roller and the movable arm along the same straight line, no more movable space is occupied, and the positioning is accurate.

In an embodiment of the present application, optionally, the third driving device is used to drive the cutter to move linearly relative to the movable arm, and the linear movement direction of the cutter is the same as that of the pressing roller. The direction of linear movement forms a predetermined angle.

The moving direction of the cutter is at a predetermined angle with the pressing roller, so that the cutter cuts off the old material tape at a specific position, and the distance between the pressing position and the cutting position is certain, so as to ensure the stability of the tape and meet the length requirements of the joint.

In an embodiment of the present application, optionally, the linear movement direction of the cutter is a horizontal direction.

By making the moving direction of the cutter be the horizontal direction, when the cutter extends backward to cut off the old material strip, the cutter will not interfere with the new material roll, so as to ensure that the cutter only cuts the old material strip.

In an embodiment of the present application, optionally, an over-roller is further installed on the base, and the movable arm is arranged between the over-roller and the new material roll.

By setting the roller on the base, the old material tape can be properly tensioned for easy splicing and cutting.

In a second aspect, an embodiment of the present application provides an unwinding device, which includes:

base;

a turret for mounting the used and new reels, the turret mounted on the base, the turret being rotatable to reverse the old and new reels; and

In the aforementioned automatic tape splicing device, the automatic tape splicing device is mounted on the base.

By arranging an unwinding device with the aforementioned automatic tape splicing device, the automatic tape splicing device cooperates with the turret of the unwinding device to jointly realize the work of splicing and cutting the tape.

In an embodiment of the present application, optionally, the unwinding device further includes a mounting seat and a fourth driving device, the turret bearing is connected to the mounting seat, and the mounting seat is slidably disposed on the The base and the fourth driving device are used to drive the mounting base to move relative to the base in a direction parallel to the axis of the material roll.

By installing the turret on the mounting seat and setting the mounting seat to be movable relative to the base in a direction parallel to the axis of the material roll, the running position of the material strip in the entire electrode sheet slitting equipment can be adjusted by moving the mounting seat .

In an embodiment of the present application, optionally, the turret includes a mounting bracket and a first movable portion, a second movable portion, a third movable portion, and a fourth movable portion slidably mounted on the mounting bracket. a movable part, the mounting frame is connected to the mounting seat through a bearing, the first movable part and the second movable part are arranged oppositely, the third movable part and the fourth movable part are arranged oppositely, each The movable parts are respectively provided with pneumatic chucks for connecting material rolls, between the first movable part and the second movable part is used to install old material rolls, the third movable part and the fourth movable part Used to install new rolls in between.

By setting four movable parts opposite to each other, the new material roll and the old material roll can be loaded or unloaded respectively, so that after the new and old material roll stations are switched, the old material roll can be taken off at the pick-and-place position separately and replaced. Another new reel is available for use.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present application more clearly, the following briefly introduces the accompanying drawings that need to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore do not It should be regarded as a limitation of the scope, and for those of ordinary skill in the art, other related drawings can also be obtained according to these drawings without any creative effort.

1 is a schematic three-dimensional structure diagram of the unwinding device provided in Embodiment 1 of the present application at one viewing angle;

2 is a schematic three-dimensional structural diagram of the unwinding device provided in Embodiment 1 of the present application from another viewing angle;

FIG. 3 is a schematic three-dimensional structure diagram of the unwinding device provided in Embodiment 1 of the present application from another viewing angle;

4 is a schematic plan view of the unwinding device provided in Embodiment 1 of the present application;

5 is a flow chart of station switching provided by Embodiment 1 of the present application;

FIG. 6 is a schematic three-dimensional structure diagram of the automatic tape splicing device provided in Embodiment 1 of the present application from one viewing angle;

7 is a schematic three-dimensional structural diagram of the automatic tape splicing device provided in Embodiment 1 of the present application from another perspective;

8 is a working state diagram of the automatic tape splicing device provided in Embodiment 1 of the present application;

FIG. 9 is a schematic three-dimensional structure diagram of the automatic tape splicing device provided in Embodiment 2 of the present application from one viewing angle;

FIG. 10 is a schematic three-dimensional structural diagram of the automatic tape splicing device provided in Embodiment 2 of the present application from another perspective.

Icon: 100-base; 110-slide rail; 200-mounting seat; 210-first motor; 300-turret; 310-mounting frame; 311-mounting plate; 312-connecting rod; 313-guide rail; 320- the first movable part; 330- the second movable part; 340- the third movable part; 350- the fourth movable part; 360- refueling cylinder; 370- pneumatic chuck; 400a-automatic splicing device; 410a-base; 411a-first driving device; 412a-second roller; 420a-moving arm; 421a-pressing roller; - third drive; 425a - first roller; 500 - automatic guided transport vehicle; 400b - automatic tape splicing device; 410b - base; 411b - first drive; 412b - second roller; 420b - activity arm; 421b-pressing roller; 422b-cutting knife; 423b-second driving device; 424b-third driving device.

Detailed ways

In the description of this application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear ” and other indications are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of the application is usually placed in use, and are only for the convenience of describing the application and simplifying the description, rather than indicating Or imply that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as a limitation of the present application. In addition, if the terms "first", "second" and the like appear in the description of the present application, they are only used to distinguish the description, and should not be understood as indicating or implying relative importance.

Furthermore, the appearance of the terms "horizontal", "vertical" and the like in the description of the present application does not mean that the component is required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", it does not mean that the structure must be completely horizontal, but can be slightly inclined.

Example 1

The present application provides an unwinding device, which does not need to suspend subsequent material belt processing equipment when changing material belts, and ensures the continuous operation of the entire assembly line.

The unwinding device includes a base 100, a mounting seat 200, a turret 300 and an automatic tape splicing device 400a. The structure of the unwinding device is shown in Figures 1, 2, 3 and 4. For the convenience of description, the extension direction of the material tape is taken as the front-rear direction, and the axial direction of the material roll is taken as the left-right direction. The unwinding device has a working position in the front and a pick-and-place position at the rear, where the roll is loaded and unloaded, and the roll is released forward at the working position.

The mounting seat 200 and the automatic tape splicing device 400 a are mounted on the base 100 , and the automatic tape splicing device 400 a is forward relative to the mounting seat 200 .

The base 100 is provided with a slide rail 110 and a fourth driving device (not shown in the figure). The extension direction of the slide rail 110 is perpendicular to the extension direction of the material strip, that is, along the left-right direction. The mounting seat 200 is installed on the slide rail 110. The fourth driving device is used to drive the mounting base 200 to move along the slide rail 110 . In this embodiment, the fourth driving device is a linear motor.

The mounting seat 200 is formed with an accommodating space for accommodating the turret 300, and is provided with a first motor 210, and two left and right bearing supports are provided on the left and right sides of the accommodating space.

The turret 300 includes a mounting bracket 310 and four movable parts, and the four movable parts are slidably connected to the mounting bracket 310 .

The mounting frame 310 includes two left and right mounting plates 311 and two upper and lower connecting rods 312. Both ends of the two connecting rods 312 are fixedly connected to the two mounting plates 311 respectively. The two mounting plates 311 are respectively provided with rotating shafts. The axis lines are on the same straight line, the two rotating shafts are respectively connected to the left and right bearing supports of the mounting seat 200, and one of the rotating shafts is drivingly connected to the first motor 210, and the first motor 210 is used to drive the turret 300 around it. The shaft turns.

The four movable parts are opposite to each other, that is, two movable parts are provided on the left side of the mounting bracket 310 , and two movable parts are provided on the right side of the mounting bracket 310 , and the two movable parts on the left side are respectively opposite to the two movable parts on the right side. Every two oppositely arranged movable parts cooperate to clamp a material roll, that is to say, two material rolls can be installed on one turret 300, one material roll is in the working position, the other material roll is in the pick-and-place position, and the turret 300 rotates to exchange the positions of the two rolls.

Each connecting rod 312 is respectively provided with four guide rails 313 , and each movable part is slidably connected to one guide rail 313 of the upper connecting rod 312 and one guide rail 313 of the lower connecting rod 312 respectively. Two sets of refueling cylinders 360 are respectively provided on each mounting plate 311, each set of refueling cylinders 360 is respectively connected to a movable part, and each set of refueling cylinders 360 is used to drive a corresponding movable part to approach or move away from the left and right directions. roll.

The two movable parts on the left are respectively provided with second motors 380 , and the two movable parts on the right are respectively provided with brakes 390 .

Each movable part is respectively provided with a pneumatic chuck 370. When the movable part is close to the material roll, the pneumatic chuck 370 extends into the material barrel of the material roll and is inflated and tightened. The pneumatic chuck 370 is rotatably arranged on the movable part, and the second motor 380 is drivingly connected with the left pneumatic chuck 370 to drive the pneumatic chuck 370 to rotate; the brake 390 cooperates with the right pneumatic chuck 370 to limit the pneumatic The collet 370 rotates.

For the convenience of description, the two movable parts on the left are hereinafter referred to as the first movable part 320 and the third movable part 340, and the two movable parts on the right are referred to as the second movable part 330 and the fourth movable part 350, wherein the first movable part 320 and the second movable part 330 are arranged opposite to each other, and the third movable part 340 and the fourth movable part 350 are arranged opposite to each other. Therefore, the first movable portion 320 and the third movable portion 340 are respectively provided with the second motors 380 , and the third movable portion 340 and the fourth movable portion 350 are respectively provided with the brakes 390 . The first movable part 320 and the second movable part 330 are used for installing the old material roll, and the third movable part 340 and the fourth movable part 350 are used for installing the new material roll.

That is to say, two sets of refueling cylinders 360 on the left mounting plate 311, one is used to drive the first movable part 320, and the other is used to drive the third movable part 340; the two sets of refueling cylinders on the right mounting plate 311 One group of the cylinders 360 is used to drive the second movable part 330 , and the other group is used to drive the fourth movable part 350 . A set of refueling cylinders 360 on the left drives the first movable part 320, and a set of refueling cylinders 360 on the right drives the second movable part 330, so that the first movable part 320 and the second movable part 330 are close to or away from the used reel; The right set of refueling cylinders 360 drives the third movable part 340, and the left set of refueling cylinders 360 drives the fourth movable part 350, so that the third movable part 340 and the fourth movable part 350 are close to or away from the new roll.

In addition, in order to avoid the interference of the material tape of the old material reel with the new material reel when the stations are exchanged, the mounting frame 310 is further provided with an auxiliary roller 314 for auxiliary transfer. As shown in FIG. 1 , the auxiliary rollers 314 are arranged parallel to the upper and lower connecting rods 312 , and include two groups, two in each group.

The aforementioned automatic tape splicing device 400a is installed at the front position of the unwinding device, and is used for connecting the old material tape to the new material coil and cutting the old material tape after switching between the new and the old material coil, so as to replace the material coil. The automatic tape splicing device 400a includes a base 410a, a movable arm 420a, a pressing roller 421a and a cutter 422a, the base 410a is fixed on the base 100, the movable arm 420a is movably mounted on the base 410a, the pressing roller 421a and the cutter 422a are respectively It is attached to the movable arm 420a.

The base 410a is provided with a first driving device 411a. The first driving device 411a is used to drive the movable arm 420a to move, so that the movable arm 420a reaches a predetermined position. When the movable arm 420a reaches the predetermined position, the pressing roller 421a and the cutter 422a are close to each other For the old material tape, the pressing roller 421a and the cutting knife 422a are not in contact at this time.

The movable arm 420a is provided with a second driving device 423a and a third driving device 424a. The second driving device 423a is used to drive the pressing roller 421a to move relative to the movable arm 420a, and the third driving device 424a is used to drive the cutter 422a to move relative to the movable arm 420a. The arm 420a moves. When the movable arm 420a reaches the predetermined position, the second driving device 423a drives the pressing roller 421a to move to press the old material tape to the new material tape, and then the third driving device 424a drives the cutter 422a to move to cut the old material tape.

In this embodiment, the automatic tape splicing device 400a is a rotary splicing structure. As shown in FIGS. 6, 7 and 8, one end of the movable arm 420a is rotatably connected to the base 410a, and the first driving device 411a is the third The motor and the third motor are connected with the movable arm 420a in a driving manner to drive the movable arm 420a to rotate, and the rotation range of the movable arm 420a is between the base 410a and the new material roll. The other end of the movable arm 420a is provided with the aforementioned pressing roller 421a and the cutter 422a, and the cutter 422a is further away from the base 410a than the pressing roller 421a.

The second driving device 423a and the third driving device 424a are air cylinders respectively. The second driving device 423a drives the pressing roller 421a to extend relative to the movable arm 420a, and the third driving device 424a drives the cutter 422a to extend relative to the movable arm 420a to press The extending directions of the rollers 421a and the cutters 422a are parallel and at a certain angle with the movable arm 420a. As shown in FIG.

After the movable arm 420a reaches the predetermined position and before the pressing roller 421a presses the old material tape to the new material tape, in order to prevent the cutter 422a from contacting the old material tape, a first over-roller 425a is provided at the end of the movable arm 420a away from the base 410a, The pressure roller 421a and the cutter 422a are positioned between the base 410a and the first pass roll 425a, and the cutter 422a is closer to the first pass roll 425a than the pressure roll 421a.

In order to assist in transferring the material tape, the base 410a is also provided with a second over-roller 412a, and the second over-roller 412a also has a certain tensioning effect, so that the material tape between the material roll and the second over-roller 412a is properly stretched Tighten, or make the web between the auxiliary roller 314 and the second over-roller 412a properly tight.

As shown in FIG. 7 , the number of the second pass rollers 412a is three, and the three second pass rollers 412a are arranged in the front-rear direction, and the heights decrease sequentially from the back to the front. The lower two second pass rollers 412a assist in guiding the old material belt to move downward and forward, so that there is a certain force between the old material belt and the second pass roller 412a, so that the second pass roller 412a and the auxiliary roller 314 have a certain force. Straighten the old material tape together, and make the old material tape and the new material roll have a certain gap.

5, the implementation principle of the unwinding device provided in this embodiment is as follows:

When the used reel is in the working position, the first movable part 320 and the second movable part 330 clamp the used reel, and the second motor 380 on the first movable part 320 drives the first movable part 320, the used reel, and the second movable part The 330 rotates around the axis of the old reel to release the tape.

The new material roll is transported to the pick-and-place position by the automatic guided transport vehicle 500 (or other transport modes), and the two groups of refueling cylinders 360 on the mounting plate 311 respectively drive the third movable part 340 and the fourth movable part 350 along the guide rails 313 moves and approaches the material coil, so that the pneumatic chucks 370 on the third movable part 340 and the fourth movable part 350 respectively enter the two ends of the barrel in the middle of the material coil, and then the pneumatic chucks 370 are inflated and tightened to fix the connection The new material roll is installed on the turret 300 for standby, and glue is applied to the new material roll for subsequent tape splicing work.

When the old material roll is almost finished, the first motor 210 drives the turret 300 to rotate, so as to move the new material roll to the working position, and the old material roll to the pick-and-place position, thereby completing the station switching. As shown in Fig. 5, the turret 300 rotates in a clockwise direction, the new material roll passes through the upper part to reach the working position, and the old material roll passes through the lower part to reach the pick-and-place position. Below, the auxiliary roller 314 and the second over-roller 412a tighten the old material belt and make the old material belt and the new material roller have a certain gap.

After the stations of the two material rolls are switched, the automatic tape splicing device 400a starts to perform the splicing work. First, the second motor 380 on the third movable part 340 is used to drive the new material roll to rotate, so that the linear speed of the new material roll is synchronized with the speed of the old material belt, and then the first driving device 411a drives the movable arm 420a to rotate to a predetermined position to do Ready to pick up. When the new material roll rotates to the position of gluing close to the old material roll, the second driving device 423a drives the pressing roller 421a to extend to press the old material belt to the new material roll, so that the old material belt and the new material roll are bonded, and then the third The driving device 424a drives the cutter 422a to extend to cut off the old material tape behind the bonding position, so as to complete the tape splicing work, and the new material roll continues to release the material tape at the working position.

The old material roll is an empty barrel at this time, and only a small amount of material tape is still wound around the material barrel, which needs to be replaced with another new material roll for backup. Move the automatic guided transport vehicle 500 to the pick-and-place position, the pneumatic chuck 370 is deflated to release the material cylinder, and the first movable part 320 and the second movable part 330 are respectively driven by the refueling cylinder 360 to move left and right along the guide rail 313 to Release the barrel, and the barrel falls on the automatic guided transport vehicle 500 to complete the unloading work. The principle of installing another new material roll is the same as the above-mentioned principle of installing a new material roll, and the action of each component is opposite to the unloading operation, which will not be repeated here.

Example 2:

The present application provides an unwinding device. The difference between the unwinding device in Embodiment 2 and Embodiment 1 is the automatic tape splicing device 400b. The installation positions of the automatic tape splicing device 400a are the same, they are all installed on the base, and are located in front of the turret, the only difference is that the automatic tape splicing device 400b provided in this embodiment is a direct-plug splicing structure, as shown in Figure 9 and In FIG. 10, the movable arm 420b is an in-line movable arm 420b.

The first driving device 411b is mounted on the base 410b, the movable arm 420b is slidably connected to the base 410b, and the extension direction of the movable arm 420b is the same as the sliding direction. The pressing roller 421b and the cutting knife 422b are arranged at the end of the movable arm 420b, and the cutting knife 422b is closer to the base 410b than the pressing roller 421b, that is, the cutting knife 422b is relatively lower and the pressing roller 421b is relatively upward, preventing the cutting knife 422b from The old material tape interferes with the old material tape before bonding with the new material roll. A second pass roller 412b is set on the base 410b, the second pass roll 412b is higher than the pressing roll 421b, and the second pass roll 412b and the auxiliary roller on the turret jointly tension the material belt and assist in the transfer.

The first driving device 411b is used to drive the movable arm 420b to move linearly toward the new material roll to a predetermined position. When the movable arm 420b reaches the predetermined position, the pressing roller 421b and the cutter 422b are close to the old material strip, and at this time, the pressing roller 421b and the cutter 422b not in contact.

The second driving device 423b is used to drive the pressing roller 421b to extend the movable arm 420b along the linear moving direction of the movable arm 420b, so as to press the old material tape to bond the new material roll. That is, the pressing roller 421b and the movable arm 420b move in the same linear direction.

The third driving device 424b is used to drive the cutter 422b to extend at a certain angle relative to the movable arm 420b, so as to cut the old material tape behind the pressing roller 421b. That is, the moving direction of the cutter 422b is at a predetermined angle with the pressing roller 421b, so that the cutter 422b cuts the old material tape at a specific position, so as to meet the requirements of splicing stability and the splicing length of the old and new material tapes. In this embodiment, when the movable arm 420b is at the predetermined position, the third driving device 424b drives the cutter 422b to extend horizontally backward relative to the movable arm 420b, so that the moving direction of the cutter 422b is parallel to the tangential direction of the new roll , and because the cutter 422b is below, the cutter 422b will not interfere with the new material roll, ensuring that the cutter 422b only cuts the old material strip.

The aforementioned first driving device 411b, second driving device 423b, and third driving device 424b all use air cylinders.

The implementation principle of the automatic tape splicing device 400b of the in-line structure provided in this embodiment is as follows:

After the stations of the new and old material rolls are switched, and the linear speed of the new material roll is the same as that of the old material belt, the first driving device 411b drives the movable arm 420b to move to a predetermined position, and when the gluing position of the new material roll is close to the old material belt, the first The second driving device 423b drives the pressing roller 421b to extend the movable arm 420b to press the old material tape to the new material roll for bonding, and then the third driving device 424b drives the cutter 422b to extend backward at a predetermined angle relative to the movable arm 420b Cut the tape.

The automatic tape splicing device 400b provided by the embodiment of the present application has a simple structure and a clear action path.

The above descriptions are only preferred embodiments of the present application, and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the protection scope of this application.

Claims (10)

1. An automatic splicing device, comprising:

a base;

the movable arm is arranged on the base;

the compression roller is arranged on the movable arm;

the cutter is arranged on the movable arm;

the first driving device is used for driving the movable arm to move relative to the base so as to enable the compression roller and the cutter to be close to the old material belt;

the second driving device is used for driving the compression roller to move relative to the movable arm so as to press the old material belt to the new material belt through the compression roller;

and the third driving device is used for driving the cutter to move relative to the movable arm so as to cut off the old material belt.

2. The automatic belt splicing apparatus of claim 1 wherein said movable arm is rotatably connected to said base, said first drive means being adapted to drive said movable arm to rotate relative to said base.

3. The automatic belt splicing apparatus of claim 1 wherein said movable arm is movably connected to said base, said first drive means being adapted to drive said movable arm in linear movement relative to said base.

4. The automatic belt splicing apparatus according to claim 3, wherein the second driving means is adapted to drive the pressing roller to move linearly with respect to the movable arm, and the pressing roller and the movable arm move linearly in the same direction.

5. The automatic belt splicing apparatus according to claim 4, wherein the third driving means is adapted to drive the cutting knife to move linearly with respect to the movable arm, and a direction of the linear movement of the cutting knife and a direction of the linear movement of the press roller form a predetermined angle.

6. The automatic belt splicing apparatus according to claim 5, wherein the linear movement direction of the cutter is a horizontal direction.

7. The automatic splicing device of claim 1, wherein a pass-over roller is further mounted on the base, and the movable arm is positioned between the pass-over roller and the new roll.

8. The utility model provides an unwinding device which characterized in that includes:

a base;

a turret for mounting the old roll and the new roll, the turret being mounted on the base, the turret being rotatable to allow the old roll and the new roll to be reversed; and

the automated splicing device of any one of claims 1 to 7, which is mounted on the base.

9. The unwinding device as claimed in claim 8, further comprising a mounting base and a fourth driving device, wherein the turret bearing is connected to the mounting base, the mounting base is slidably disposed on the base, and the fourth driving device is configured to drive the mounting base to move relative to the base along a direction parallel to the axial direction of the material roll.

10. The unwinding device as claimed in claim 9, wherein the turret includes a mounting frame, and a first movable portion, a second movable portion, a third movable portion and a fourth movable portion slidably mounted on the mounting frame, the mounting frame is connected to the mounting base through a bearing, the first movable portion and the second movable portion are disposed opposite to each other, the third movable portion and the fourth movable portion are disposed opposite to each other, each movable portion is provided with a pneumatic chuck for connecting a material roll, an old material roll is mounted between the first movable portion and the second movable portion, and a new material roll is mounted between the third movable portion and the fourth movable portion.

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