CN220299872U - Reel changing device and strip preparation equipment - Google Patents

Abstract

The application provides a roll changing device and strip preparation equipment, roll changing device include first installation roller, second installation roller, strip hold-down mechanism, strip cutting mechanism, strip connect mechanism and strip traction mechanism, wherein: the first installation roller discharges a first strip; the second installation roller discharges a second strip. The working strip sequentially passes through the strip pressing mechanism, the strip cutting mechanism and the strip splicing mechanism under the traction of the strip traction mechanism and then reaches the strip preparation station; the standby strip sequentially passes through the strip compressing mechanism and the strip cutting mechanism, reaches the strip splicing mechanism and is compressed by the strip compressing mechanism; the strip splicing mechanism is used for splicing the end part of the standby strip and the working strip together, and the strip cutting mechanism is used for cutting the working strip after the splicing is completed. Adopt the reel changer of this application to change the material and roll up, work strip can be automatic with reserve strip and work strip follow-up after using up to promote the material and roll up and change efficiency, reduced the material and rolled up and changed the degree of difficulty.

Description

Reel changing device and strip preparation equipment

Technical Field

The application relates to the field of photovoltaic module production, in particular to a roll changing device and strip preparation equipment.

Background

After typesetting of the battery strings, bus bars are required to be welded, and before bus bar welding is implemented, bus bar preparation equipment is required to be utilized to prepare the bus bars in advance. The bus bar preparation equipment generally comprises a traction mechanism, a pressing device, a cutting device and a bearing table, and the bus bar preparation process is approximately as follows: the bus bar in the material roll is pulled out to a certain length towards the bearing table by the traction mechanism, then the bus bar is pressed by the pressing device, and then the cutting device is controlled to cut off the bus bar, so that the bus bar section with the preset length is obtained. After the currently prepared bus bar section is taken away, the traction mechanism continues to clamp the bus bar from the pressing device and pull the bus bar for a certain length towards the bearing table, and the operation is repeated to finish the preparation of the next bus bar section.

After unreeling of the bus bar is completed, namely, after the bus bar cannot be continuously unreeled from the material roll, a new material roll needs to be replaced, and the existing material roll replacement mode is as follows: stopping, manually unloading the raw material roll, installing a new material roll at the raw material roll, manually pulling out the bus bar in the new material roll, bypassing each guide wheel, passing through the pressing device and the cutting device, clamping the end part of the bus bar by the traction mechanism, and starting. The existing roll changing mode needs to be stopped to change the material roll, the machine can be started after all the material rolls are changed, the stop time is long, and the bus bar passes through the pressing device and the cutting device because of narrow operable space and difficult operation.

Disclosure of Invention

To the above-mentioned technical problem that traditional material book change mode exists, this application provides a roll change device, and its technical scheme is as follows:

the utility model provides a roll change device, includes mounting panel and installs first installation roller, second installation roller, strip hold-down mechanism, strip cutting mechanism, strip connect mechanism and strip traction mechanism on the mounting panel, wherein:

the first mounting roller is used for mounting the first material roll and driving the first material roll to rotate so as to release the first strip; the second installation roller is used for installing a second material roll and driving the second material roll to rotate so as to discharge a second strip;

the strip traction mechanism is used for clamping the working strip and traction the working strip backwards, the traction working strip sequentially passes through the strip pressing mechanism, the strip cutting mechanism and the strip splicing mechanism and then reaches a strip preparation station of the later path, and if the working strip is a first strip, the second strip is a standby strip; if the working strip is the second strip, the first strip is a standby strip;

the end part of the standby strip sequentially passes through the strip compressing mechanism and the strip cutting mechanism and then reaches the strip splicing mechanism, and the strip compressing mechanism is used for compressing the passing standby strip;

The strip pressing mechanism is also used for pressing the working strip when unreeling of the working strip is completed, the strip splicing mechanism is used for splicing the end part of the standby strip and the working strip together, the strip cutting mechanism is used for cutting the working strip after splicing is completed, and the strip pressing mechanism is used for releasing the standby strip and the working strip after cutting is completed.

The roll changing device is provided with two mounting rollers for mounting rolls, wherein the rolls on one mounting roller are used as backup rolls (namely, backup strips) when feeding is carried out (namely, working strips are provided). When the material roll for providing the working strip cannot continue to be discharged, the working strip is used up at the moment, the end part of the standby strip provided by the standby material roll can be continuously connected to the working strip on line, and then the working strip is cut off, so that the material roll can be quickly replaced on line.

Compare in traditional material book change mode, adopt the change of roll device that this application provided to change the material book, because the reserve material book can be installed before work material book blowing or blowing in-process, need not to shut down, and shortened down time, and can carry out quick continuous with reserve strip and work strip after the work strip is used up, can use reserve strip to carry out the production of next round after the follow-up, saved the step of manually passing closing device, cutting device with new strip, thereby promoted the material and rolled up change efficiency, reduced the material and rolled up the change degree of difficulty.

In some embodiments, the strap pressing mechanism comprises a cutter head, a first pressing portion, and a second pressing portion, wherein: the tool bit is arranged on the mounting plate; the first pressing part is arranged on the mounting plate and positioned on the first side of the cutter head, a first pressing gap for the first strip to pass through is formed between the first pressing part and the first side wall of the cutter head, and the first pressing part is used for clamping the first strip on the first side wall of the cutter head; the second compacting part is arranged on the mounting plate and is positioned on the second side of the cutter head, a second compacting gap for the second strip to pass through is formed between the second compacting part and the second side wall of the cutter head, and the second compacting part is used for clamping the second strip on the second side wall of the cutter head.

The strip pressing mechanism is arranged to comprise the cutter head, and the first pressing part and the second pressing part which are arranged on two sides of the cutter head, so that the strip pressing mechanism can press and release the first strip, can press and release the second strip, and is mutually independent in pressing and releasing actions of the first strip and the second strip, and is not interfered with each other.

In some embodiments, the first compacting section includes a first driver mounted on the mounting plate and a first press block connected to a driving end of the first driver for driving the first press block toward or away from the cutter head to compact the first strip against the first side wall of the cutter head or release the first strip; the second compacting part comprises a second driver and a second pressing block, wherein the second driver is arranged on the mounting plate, the second pressing block is connected to the driving end of the second driver, and the second driver is used for driving the second pressing block to move towards or away from the cutter head so as to compact the second strip on the second side wall of the cutter head or release the second strip.

A simple structure of a pressing part is provided, which drives a pressing block to move towards or away from a cutter head through a driver so as to press a strip to a side wall of the cutter head or release the strip.

In some embodiments, the junction of the first side wall of the tool bit and the upper end surface of the tool bit forms a first fixed blade and the junction of the second side wall of the tool bit and the upper end surface of the tool bit forms a second fixed blade; the strip cutting mechanism includes a first cutting portion and a second cutting portion, wherein: the first cutting part is arranged on the mounting plate and positioned on the first side of the cutter head, a first movable cutting edge is formed on the first cutting part, a first cutting gap for a first strip to pass through is formed between the first movable cutting edge and the first fixed cutting edge, and the first cutting part is configured to move towards the first fixed cutting edge so as to cut the first strip; the second cutting part is arranged on the mounting plate and positioned on the second side of the cutter head, a second movable cutting edge is formed on the second cutting part, a second cutting gap for the second strip to pass through is formed between the second movable cutting edge and the second fixed cutting edge, and the second cutting part is configured to move towards the second fixed cutting edge so as to cut the second strip.

The strip cutting mechanism is arranged to comprise the first cutting part and the second cutting part which are positioned at two sides of the cutter head, so that the strip cutting mechanism can cut the first strip and the second strip, and the cutting actions of the strip cutting mechanism on the first strip and the second strip are mutually independent and do not interfere with each other. In addition, multiplexing of the cutter head is achieved, and the cutter head is matched with the first compressing part and the second compressing part to compress the first strip and the second strip and matched with the first cutting part and the second cutting part to cut the first strip and the second strip. Therefore, the structure of the roll changing device in the embodiment of the application is simpler.

In some embodiments, the first cutting part comprises a third driver, a first adapter, a first connecting rod and a first movable cutter, wherein the third driver is installed on the installation plate, the first adapter is connected to the driving end of the third driver, the first end of the first connecting rod is movably connected to the first adapter, the second end of the first connecting rod is rotatably connected to the cutter head, the first movable cutter is connected to the second end of the first connecting rod, and a first movable cutter edge is formed on the first movable cutter; the third driver drives the first movable cutter to rotate towards the first fixed cutting edge through the first connecting rod so as to cut off the first strip; the second cutting part comprises a fourth driver, a second adapter, a second connecting rod and a second movable cutter, wherein the fourth driver is arranged on the mounting plate, the second adapter is connected to the driving end of the fourth driver, the first end of the second connecting rod is movably connected to the second adapter, the second end of the second connecting rod is rotatably connected to the cutter head, the second movable cutter is connected to the second end of the second connecting rod, and a second movable cutter edge is formed on the second movable cutter; the fourth driver drives the second movable cutter to rotate towards the second fixed cutting edge through the second connecting rod so as to cut off the second strip.

The utility model provides a realization mode of a simple structure's cutting part, it drives movable cutter through driver and connecting rod and rotates towards fixed cutting edge to implement the cutting off to the strip. The cutting part of this structure can set up the driver in the back of mounting panel to reduce its positive area of occupation to the mounting panel, finally make the final structure of trade of this application compacter.

In some embodiments, the strap splicing mechanism includes a positioning portion and a welding portion disposed opposite to each other on the mounting plate, a welding gap being provided between the positioning portion and the welding portion for passing the first strap and the second strap; the welding portion and the positioning portion are configured to weld the first strip and the second strip located within the welding gap.

Through setting up the strip mechanism that connects into including location portion and welding portion, can be with first strip and the continuous joint of second strip through the welded mode together, guarantee that the quality of continuing connects reliable stability is difficult for disengaging.

In some embodiments, the positioning part comprises a fifth driver and a positioning block, wherein the fifth driver is installed on the mounting plate, the positioning block is connected on the mounting plate in a sliding way and is connected with the driving end of the fifth driver, and a positioning groove is formed in the end face of the positioning block; the welding part comprises a sixth driver, a welding needle mounting part, an anode welding needle and a cathode welding needle, wherein the sixth driver is mounted on the mounting plate, the welding needle mounting part is connected with the driving end of the sixth driver in a sliding manner, and the anode welding needle and the cathode welding needle are mounted on the welding needle mounting part and point to the positioning groove; the fifth driver and the sixth driver are used for driving the positioning block and the welding needle installation part to slide towards the middle or slide towards two sides to separate, when the positioning block and the welding needle installation part slide towards the middle and close, the positive electrode welding needle and the negative electrode welding needle compress the first strip and the second strip into the positioning groove, and the positive electrode welding needle and the negative electrode welding needle are further configured to perform power-on welding on the compressed first strip and the compressed second strip.

By arranging the positioning part and the welding part, the strip splicing mechanism realizes accurate alignment and quick welding of the first strip to be welded and the second strip.

In some embodiments, the pin mount includes a slide, a first clamp block, and a second clamp block, wherein: the sliding seat is connected to the mounting plate in a sliding manner and is connected with the driving end of the sixth driver; the first clamping block is connected to the sliding seat through the first buffer component and is used for clamping one of the positive electrode welding needle and the negative electrode welding needle; the second clamping block is connected to the sliding seat through the second buffer component and is located below the first clamping block, and the second clamping block is used for clamping the other one of the positive electrode welding needle and the negative electrode welding needle.

Through setting up first buffer unit and second buffer unit for anodal welding needle and negative pole welding needle can compress tightly first area and second area and accomplish the welding respectively elasticity, guarantee welding quality. In addition, positive electrode welding needle and negative electrode welding needle centre gripping respectively in first clamp splice and second clamp splice, so, made things convenient for the dismouting to positive electrode welding needle and negative electrode welding needle.

In some embodiments, the pin mount further comprises a first limiting plate and a second limiting plate, wherein: the first limiting plate is connected to the first clamping block and is higher than the positioning block, and a first limiting groove is formed in the end face of the first limiting plate, facing the positioning block; the second limiting plate is connected to the second clamping block and is lower than the positioning block, and a second limiting groove is formed in the end face, facing the positioning block, of the second limiting plate.

When the fifth driver and the sixth driver drive the positioning block and the welding needle installation part to slide towards the middle and draw close, the first limiting groove and the second limiting groove can assist in limiting the first strip and the second strip, so that the first strip and the second strip can be finally and smoothly pressed in the positioning groove by the positive electrode welding needle and the negative electrode welding needle, the positioning effect on the first strip and the second strip is enhanced, the dislocation of the splicing sections of the first strip and the second strip is prevented, and the splicing effect is finally promoted.

In some embodiments, the roll changing device further comprises a starved detection mechanism, wherein: the material shortage detection mechanism is arranged on the mounting plate, and the working strip passes through the strip splicing mechanism and then bypasses the material shortage detection mechanism to reach the subsequent strip preparation station; the material shortage detection mechanism is used for detecting whether unreeling of the working strip is completed.

Through setting up lack material detection mechanism, realized the lack material detection to the working strip to ensure when the unreeling of working strip accomplishes, in time start the operation of changing rolls.

In some embodiments, the starved detection mechanism includes a rail, a counterweight, an importation wheel, a buffer wheel, and a sensor, wherein: the guide rail is arranged on the mounting plate along the vertical direction, the guide wheel is arranged on the mounting plate and positioned above the strip splicing mechanism, and the guide wheel is close to the upper end of the guide rail; the balancing weight is connected to the guide rail in a sliding manner, the buffer wheel is arranged on the balancing weight, and the sensor is arranged on the guide rail and is close to the lower end of the guide rail; the working strip sequentially bypasses the leading-in wheel and the buffer wheel under the traction of the traction mechanism.

When the unreeling of the working strip is not completed, the tension of the drawn working strip is large, the buffer wheel is in a high position far away from the sensor under the traction of the working strip, and the sensor cannot be triggered. When the unwinding of the working strip is completed, the tension of the working strip is reduced and loosened, the buffer wheel slides to a low position close to the sensor under the driving of the balancing weight on the buffer wheel, and the sensor is triggered to generate a material shortage signal, so that the material shortage detection of the working strip is realized.

The application also provides a strip preparation equipment, it includes reel changer, closing device, cutting device and accepting the platform of any one of the above-mentioned claims, wherein:

the roll changing device is used for supplying a working strip to the strip preparation station, the pressing device, the cutting device and the carrying table are all arranged at the strip preparation station, and the working strip sequentially passes through the pressing device and the cutting device and then reaches the carrying table; the pressing device is used for pressing the working strip after the working strip with the preset length reaches the bearing table, and the cutting device is used for cutting the working strip to obtain a strip section; the bearing table is used for bearing the strip section or is used for bearing the strip section and shaping the strip section.

Through the cooperation of reel changer, closing device, cutting device and accepting the platform, the automatic preparation to the strip has been realized to the strip preparation equipment of this application.

Drawings

FIG. 1 is a schematic view of a reel changer according to an embodiment of the present application;

FIG. 2 is a schematic view of a reel changer according to an embodiment of the present application in another view;

fig. 3 is a schematic diagram of an assembly structure of a reel changer and a strip after omitting a material shortage detection mechanism in an embodiment of the present application;

FIG. 4 is a schematic front view of a tape pressing mechanism, a tape cutting mechanism, and a tape splicing mechanism according to an embodiment of the present disclosure;

FIG. 5 is a schematic view of the back side structure of the tape pressing mechanism, tape cutting mechanism and tape splicing mechanism according to the embodiment of the present application;

FIG. 6 is a schematic view of the components of a portion of the tape pressing mechanism and tape cutting mechanism in an embodiment of the present application;

FIG. 7 is a schematic view of a tape splicing mechanism according to an embodiment of the present application;

FIG. 8 is a schematic view of a tool tip according to an embodiment of the present disclosure;

FIG. 9 is a schematic structural view of a tape preparing apparatus in an embodiment of the present application;

fig. 1 to 9 include:

roll changing device 10:

a mounting plate 1;

a first installation roller 2;

a second installation roller 3;

strip hold-down mechanism 4:

cutter head 41: a first fixed blade 411, a second fixed blade 412, a first compression limit groove 413, and a second compression limit groove 414;

First pressing portion 42: a first driver 421 and a first pressing block 422;

the second pressing portion 43: a second driver 431 and a second pressing block 432;

strip cutting mechanism 5:

the first cutting portion 51: the third driver 511, the first adapter 512, the first connecting rod 513, the first movable cutter 514, the first pin 515, and the second pin 516;

second cutting portion 52: a fourth driver 521, a second adapter 522, a second link 523, a second movable cutter 524, a third pin 525, and a fourth pin 526;

strip splicing mechanism 6:

positioning portion 61: a fifth driver 611, a positioning block 612, and a positioning groove 613;

welding portion 62: the sixth driver 621, the pin mounting portion 622, the positive electrode pin 623, the negative electrode pin 624, the slider 625, the first clamping block 626, the second clamping block 627, the first buffer assembly 628, the second buffer assembly 629, the first limiting plate 6210, the second limiting plate 6211, the first limiting groove 6212, the second limiting groove 6213;

a tape pulling mechanism 7;

the shortage detection mechanism 8:

a guide rail 81;

a weight 82;

an introduction wheel 83;

a buffer wheel 84;

a sensor 85;

a pressing device 20;

a cutting device 30;

a receiving base 40;

a first strip 100, a second strip 200.

Detailed Description

In order that the above-recited objects, features and advantages of the present application will become more readily apparent, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.

As shown in fig. 1 to 3 and 9, a roll changing device 10 in the embodiment of the present application includes a mounting plate 1, a first mounting roller 2, a second mounting roller 3, a strip pressing mechanism 4, a strip cutting mechanism 5, a strip splicing mechanism 6 and a strip traction mechanism 7 mounted on the mounting plate 1, wherein:

the first installation roller 2 is used for installing the first material roll and driving the first material roll to rotate so as to discharge the first strip 100.

The second installation roller 3 is used for installing the second material roll and driving the second material roll to rotate so as to discharge the second strip 200.

At the same time, one of the first and second strips 100, 200 is a working strip, and the other is a standby strip. For example, at the moment shown in fig. 1 to 3, the first stripe 100 is a working stripe, and the second stripe 200 is a standby stripe.

The strip traction mechanism 7 is used for clamping the working strip and traction the working strip to the back, and the traction working strip sequentially passes through the strip pressing mechanism 4, the strip cutting mechanism 5 and the strip splicing mechanism 6 and then reaches the strip preparation station A of the back.

The end of the standby strip sequentially passes through the strip compressing mechanism 4 and the strip cutting mechanism 5 and then reaches the strip splicing mechanism 6, and the strip compressing mechanism 4 is used for compressing the passing standby strip. In this way, it is ensured that the end of the reserve strip remains at the strip splicing mechanism 6 to await splicing to the working strip.

The strip pressing mechanism 4 is also used for pressing the working strip when unreeling of the working strip is completed, the strip splicing mechanism 6 is used for splicing the end part of the standby strip with the working strip, the strip cutting mechanism 5 is used for cutting the working strip after splicing is completed, and the strip pressing mechanism 4 is used for releasing the standby strip and the working strip after cutting is completed.

In order to enable a person skilled in the art to more clearly understand the operation of the roll changing device of the present application, the operation of the roll changing device 10 of the embodiment of the present application will be described in detail by way of example with reference to fig. 1 to 3 and 9.

Before starting the discharge, an initial installation of the first strip 100 and the second strip 200 is performed, the initial installation process being as follows:

a first roll for releasing the first strip 100 is mounted to the first mounting roller 2, and further, a second roll for releasing the second strip 200 is mounted to the second mounting roller 3.

The end of the first strap 100 is manually pulled so that the end of the first strap 100 is clamped on the strap pulling mechanism 7 after passing through the strap pressing mechanism 4, the strap cutting mechanism 5 and the strap splicing mechanism 6 in sequence.

The end of the second strap 200 is manually pulled, so that the end of the second strap 200 sequentially passes through the strap pressing mechanism 4 and the strap cutting mechanism 5 and then reaches the strap splicing mechanism 6, and the second strap 200 is pressed and fixed by the strap pressing mechanism 4, thereby ensuring that the end of the second strap 200 is kept in the strap splicing mechanism 6.

That is, after the initial installation is completed, the first strap 100 is used as a working strap and the second strap 200 is used as a standby strap. Of course, the mounting manner of the first strip 100 and the second strip 200 may be exchanged, so that the second strip 200 serves as a working strip and the first strip 100 serves as a standby strip.

In addition, the second strip 200, which is a spare strip, may be installed again during the discharging of the first strip 100. So long as it is ensured that the installation of the second strip 200 is completed before the end of the discharge of the first strip 100.

After the initial installation is completed, the actual strip discharging is started.

The control strip pulling mechanism 7 pulls the first strip 100 towards the strip preparation station a to perform feeding to the strip preparation station a. As the first strip 100 is pulled out continuously, the amount of the first strip 100 on the first roll gradually decreases.

When the first strip 100 meets the reel change condition, or the first strip 100 is deficient, the reel change operation can be started, specifically:

the control strap traction mechanism 7 stops traction, the control strap pressing mechanism 4 presses the first strap 100, and then the control strap splicing mechanism 6 splices the end of the second strap 200 located in the strap splicing mechanism 6 to the first strap 100 located in the strap splicing mechanism 6.

Next, the tape cutting mechanism 5 is controlled to cut the first tape 100 located in the tape cutting mechanism 5 after the completion of the splicing.

Next, the control tape pressing mechanism 4 releases the second tape 200 and the first tape 100 after the completion of cutting.

Thus, the automatic reel change of this time is completed.

After the reel change is completed, the second strip 200 becomes the working strip.

Next, the second tape 200 is pulled toward the tape preparation station a by the control tape pulling mechanism 7. A new round of discharging is started.

When a new round of discharging starts or in the discharging process, the first material roll which is emptied can be taken down at any time, the new first material roll is mounted on the first mounting roller 2, and the end part of the first strip 100 which is released by the new first material roll is manually pulled, so that the end part of the first strip 100 sequentially passes through the strip compressing mechanism 4 and the strip cutting mechanism 5 and then reaches the strip splicing mechanism 6, and the first strip 100 is compressed and fixed by the strip compressing mechanism 4, thereby ensuring that the end part of the new first strip 100 is kept in the strip splicing mechanism 6, and at the moment, the new first strip 100 becomes a standby strip and waits for the next reel change.

It can be seen that the present application provides a roll change apparatus that is provided with two mounting rolls for mounting rolls, wherein the roll on one of the mounting rolls is used as a backup roll (i.e. a backup strip) when feeding is performed (i.e. a working strip is provided). When the material roll for providing the working strip cannot continue to be discharged, the working strip is used up at the moment, the end part of the standby strip provided by the standby material roll can be continuously connected to the working strip on line, and then the working strip is cut off, so that the material roll can be quickly replaced on line.

Compare in traditional material book change mode, adopt the change of roll device that this application provided to change the material book, because the reserve material book can be installed before work material book blowing or blowing in-process, need not to shut down, and shortened down time, and can carry out quick continuous with reserve strip and work strip after the work strip is used up, can use reserve strip to carry out the production of next round after the follow-up, saved the step of manually passing closing device, cutting device with new strip, thereby promoted the material and rolled up change efficiency, reduced the material and rolled up the change degree of difficulty.

The roll changing device is suitable for changing rolls of bus bars, namely, the first roll and the second roll are respectively bus bar rolls for releasing the first bus bar and the second bus bar. Of course, the roll changing device provided by the embodiment of the application can also be used for changing rolls of other strip-shaped materials such as adhesive tapes.

As shown in fig. 4, the tape pressing mechanism 4 may alternatively include a cutter head 41, a first pressing portion 42, and a second pressing portion 42, wherein: the cutter head 41 is provided on the mounting plate 1. The first pressing portion 42 is disposed on the mounting plate 1 and located on the first side of the cutter head 41, a first pressing gap is formed between the first pressing portion 42 and the first side wall of the cutter head 41 for the first strip 100 to pass through, and the first pressing portion 42 is used for clamping the first strip 100 on the first side wall of the cutter head 41. The second pressing portion 43 is disposed on the mounting plate 1 and located on the second side of the cutter head 41, a second pressing gap is formed between the second pressing portion 43 and the second side wall of the cutter head 41 for the second strip 200 to pass through, and the second pressing portion 43 is used for clamping the second strip 200 on the second side wall of the cutter head 41.

By providing the strip pressing mechanism 4 to include the cutter head 41, and the first pressing portion 42 and the second pressing portion 42 located on both sides of the cutter head 41, the strip pressing mechanism 4 can perform pressing and releasing of the first strip 100 and pressing and releasing of the second strip 200, and pressing and releasing actions of the first strip 100 and the second strip 200 are independent of each other and do not interfere with each other.

Alternatively, the first pressing part 42 includes a first driver 421 and a first pressing block 422, wherein the first driver 421 is mounted on the mounting plate 1, the first pressing block 422 is connected to a driving end of the first driver 421, and the first driver 421 is used to drive the first pressing block 422 to move toward or away from the cutter head 41 to press the first strip 100 on the first sidewall of the cutter head 41 or release the first strip 100. The first actuator 421 may be, for example, a translation driving device such as an air cylinder, an electric cylinder, a screw motor, or the like.

Similarly, the second pressing portion 43 may include a second driver 431 and a second pressing block 432, wherein the second driver 431 is mounted on the mounting plate 1, the second pressing block 432 is connected to a driving end of the second driver 431, and the second driver 431 is configured to drive the second pressing block 432 to move toward or away from the cutter head 41 to press the second strip 200 against the second side wall of the cutter head 41 or release the second strip 200. The second driver 431 may be, for example, a translation driving device such as an air cylinder, an electric cylinder, a screw motor, or the like.

Of course, other structures of the pressing mechanism may be used for the first pressing portion 42 and the second pressing portion 43, as long as the pressing and releasing of the first strip 100 and the second strip 200 can be performed.

As shown in fig. 8, optionally, a first compression limiting groove 413 and a second compression limiting groove 414 are respectively provided on the first side wall and the second side wall of the cutter head 41. When the first pressing block 422 is driven by the first driver 421 to move towards the cutter head 41, the first pressing block 422 is pressed into the first pressing limiting groove 413 by the first strip 100, so that the first pressing block 422 can be prevented from accidentally sliding when the first pressing block 422 presses the first strip 100, and the first strip 100 is separated. Similarly, when the second belt 200 passes through the second pressing limiting groove 414 and the second driver 431 drives the second pressing block 432 to move toward the cutter head 41, the second pressing block 432 is pressed into the second pressing limiting groove 414.

With continued reference to fig. 8, the junction of the first side wall of the cutter head 41 and the upper end surface of the cutter head forms a first fixed blade 411, and the junction of the second side wall of the cutter head 41 and the upper end surface of the cutter head forms a second fixed blade 412. Correspondingly, as shown in fig. 4 to 5, the tape cutting mechanism 5 includes a first cutting portion 51 and a second cutting portion 52, wherein the first cutting portion 51 is provided on the mounting plate 1 and located on the first side of the cutter head 41, a first moving blade is formed on the first cutting portion 51, a first cutting gap through which the first tape 100 passes is formed between the first moving blade and the first fixed blade 411, and the first cutting portion 51 is configured to move toward the first fixed blade 411 to cut the first tape 100 passing through the first cutting gap.

The second cutting portion 52 is provided on the mounting plate 1 and located at the second side of the cutter head 41, a second moving blade is formed on the second cutting portion 52, a second cutting gap through which the second strip 200 passes is formed between the second moving blade and the second fixed blade 412, and the second cutting portion 52 is configured to move toward the second fixed blade 412 to cut the second strip 200 passing through the second cutting gap.

By providing the tape cutting mechanism 5 with the first cutting portion 51 and the second cutting portion 52 on both sides of the cutter head 41, the tape cutting mechanism 5 can cut the first tape 100 and the second tape 200, and the cutting operations of the first tape 100 and the second tape 200 are independent of each other and do not interfere with each other. In addition, multiplexing of the cutter head 41 is achieved, and the cutter head 41 performs pressing of the first and second tapes 100 and 200 in cooperation with the first and second pressing portions 42 and 42, and performs cutting of the first and second tapes 100 and 200 in cooperation with the first and second cutting portions 51 and 52. Therefore, the structure of the roll changing device in the embodiment of the application is simpler.

As shown in fig. 4 to 6, optionally, the first cutting part 51 includes a third driver 511, a first adapter 512, a first link 513, and a first movable cutter 514, where the third driver 511 is mounted on the mounting board 1, the first adapter 512 is connected to a driving end of the third driver 511, a first end of the first link 513 is movably connected to the first adapter 512, a second end of the first link 513 is rotatably connected to the cutter head 41, the first movable cutter 514 is connected to a second end of the first link 513, and a first movable cutter edge is formed on the first movable cutter 514. The third driver 511 drives the first movable cutter 514 to rotate toward the first fixed blade 411 via the first link 513, so that the first movable blade and the first fixed blade 411 are combined to cut the first tape.

Optionally, the first adapter 512 is a first end of the U-shaped first link 513 and is provided with a first connecting hole, and the first connecting hole is a waist-shaped hole. The first end of the first link 513 is inserted between the two arms of the first adapter 512, the first pin 515 passes through the second connection hole, and the two ends of the first pin 515 are respectively mounted on the two arms of the first adapter 512. The cutter head 41 is provided with a second connecting hole, the second end of the first connecting rod 513 is provided with a third connecting hole, and the second end of the first connecting rod 513 is rotatably connected to the cutter head 41 through a second pin 516 penetrating through the second connecting hole and the third connecting hole.

The third actuator 511 may be a translational drive device such as an air cylinder, an electric cylinder, a screw motor, or the like. Taking the third driver 511 as an example, when the telescopic rod is extended, the second end of the first link 513 rotates (e.g., rotates clockwise) around the second pin 516, so as to drive the first movable cutter 514 to rotate synchronously toward the first fixed blade 411, so as to cut the first strip 100.

Similarly, optionally, the second cutting portion 52 includes a fourth driver 521, a second adapter 522, a second connecting rod 523, and a second movable cutter 524, where the fourth driver 521 is mounted on the mounting board 1, the second adapter 522 is connected to a driving end of the fourth driver 521, a first end of the second connecting rod 523 is movably connected to the second adapter 522, a second end of the second connecting rod 523 is rotatably connected to the cutter head 41, the second movable cutter 524 is connected to a second end of the second connecting rod 523, and a second movable cutter edge is formed on the second movable cutter 524. The fourth driver 521 drives the second movable cutter 524 to rotate towards the second fixed blade 412 via the second link 523, so that the second movable blade and the second fixed blade 412 are engaged to cut the second strip.

Optionally, the second adapter 522 is a U-shaped second connecting rod 523, and a fifth connecting hole is disposed on a first end of the second connecting rod, and the fifth connecting hole is a waist-shaped hole. The first end of the second link 523 is inserted between the two arms of the second adapter 522, the third pin 525 passes through the fifth connection hole, and both ends of the third pin 525 are respectively mounted on the two arms of the second adapter 522. The cutter head 41 is provided with a sixth connecting hole, the second end of the second connecting rod 523 is provided with a seventh connecting hole, and the second end of the second connecting rod 523 is rotatably connected to the cutter head 41 through a fourth pin 526 penetrating through the sixth connecting hole and the seventh connecting hole.

The fourth driver 521 may be a translational driving device such as an air cylinder, an electric cylinder, a screw motor, or the like. Taking the fourth driver 521 as an example, when the telescopic rod is extended, the second end of the second link 523 rotates (e.g., counterclockwise) around the fourth pin 526, so as to drive the second movable cutter 524 to synchronously rotate toward the second fixed blade 412, so as to cut the second strip 200.

As shown in fig. 4 to 5 and 7, the tape splicing mechanism 6 may alternatively include a positioning portion 61 and a welding portion 62 that are provided opposite to each other on the mounting board 1, and a welding gap through which the first tape 100 and the second tape 200 pass is provided between the positioning portion 61 and the welding portion 62. The welding portion 62 and the positioning portion 61 are configured to weld the first strip 100 and the second strip 200 located within the welding gap.

Still taking the first strap 100 as a working strap and the second strap 200 as a standby strap as an example, the first strap 100 passes through the welding gap under the traction of the strap traction mechanism 7, and the end of the second strap 200 is drawn into the welding gap in advance. In performing the splicing, the positioning portion 61 and the welding portion 62 weld together the ends of the first strip 100 and the second strip 200 located therebetween, so that the ends of the second strip 200 are spliced to the first strip 100.

Optionally, the positioning portion 61 includes a fifth driver 611 and a positioning block 612, where the fifth driver 611 is mounted on the mounting board 1, the positioning block 612 is slidably connected to the mounting board 1 and connected to the driving end of the fifth driver 611, and a positioning groove 613 is disposed on an end surface of the positioning block 612.

The welding part 62 includes a sixth driver 621, a pin mounting part 622, a positive electrode pin 623, and a negative electrode pin 624, wherein the sixth driver 621 is mounted on the mounting plate 1, the pin mounting part 622 is slidably connected to the mounting plate 1 and connected to the driving end of the sixth driver 621, and the positive electrode pin 623 and the negative electrode pin 624 are mounted on the pin mounting part 622 and directed to the positioning groove 613.

The fifth driver 611 and the sixth driver 621 are configured to drive the positioning block 612 and the pin mounting portion 622 to slide toward each other or to slide apart toward both sides, wherein when the positioning block 612 and the pin mounting portion 622 slide toward each other, the positive electrode pin 623 and the negative electrode pin 624 press the first strip 100 and the second strip 200 into the positioning groove 613, and then the positive electrode pin 623 and the negative electrode pin 624 perform the electric welding of the pressed first strip 100 and the second strip 200. The fifth driver 611 and the sixth driver 621 may be, for example, a translation driving device such as an air cylinder, an electric cylinder, a screw motor, or the like.

By providing the positioning portion 61 and the welding portion 62, the strap splicing mechanism 6 achieves accurate alignment and quick welding of the first strap 100 and the second strap 200 to be welded.

Optionally, as shown in fig. 7, the welding pin mounting portion 622 includes a slide 625, a first clamping block 626 and a second clamping block 627, wherein: the slider 625 is slidably connected to the mounting plate 1 and is connected to the driving end of the sixth driver 621. A first clamping block 626 is connected to the slider 625 via a first buffer member 628, the first clamping block 626 being adapted to clamp one of the positive electrode pin 623 and the negative electrode pin 624. The second clamping block 627 is connected to the sliding seat 625 through a second buffer component 629 and is located below the first clamping block 626, and the second clamping block 627 is used for clamping the other of the positive electrode welding needle 623 and the negative electrode welding needle 624.

Optionally, the first buffer component 628 and the second buffer component 629 have the same structure, taking the first buffer component 628 as an example, the first buffer component 628 includes a spring and a guide rod, one end of the guide rod is connected to the slide seat 625, the first clamping block 626 is slidably arranged on the guide rod in a penetrating manner, the spring is sleeved on the guide rod, and two ends of the spring respectively abut against the slide seat 625 and the first clamping block 626.

By providing the first buffer assembly 628 and the second buffer assembly 629, the positive electrode welding needle 623 and the negative electrode welding needle 624 can elastically compress the first strip 100 and the second strip 200 respectively and complete welding, thereby ensuring welding quality.

In addition, the positive electrode welding needle 623 and the negative electrode welding needle 624 are respectively clamped in the first clamping block 626 and the second clamping block 627, so that the positive electrode welding needle 623 and the negative electrode welding needle 624 can be conveniently disassembled and assembled.

With continued reference to fig. 7, the pin mount 622 may optionally further include a first stop plate 6210 and a second stop plate 6211, wherein: the first limiting plate 6210 is connected to the first clamping block 626 and is higher than the positioning block 612, and a first limiting groove 6212 is formed on an end surface of the first limiting plate 6210 facing the positioning block 612. The second limiting plate 6211 is connected to the second clamping block 627 and is lower than the positioning block 612, and a second limiting groove 6213 is formed on an end surface of the second limiting plate 6211 facing the positioning block 612.

So set up, when the fifth driver 611 and the sixth driver 621 drive the positioning block 612 and the welding needle mounting portion 622 to slide towards each other in the middle, the first limiting groove 6212 and the second limiting groove 6213 can assist in limiting the first strip 100 and the second strip 200, so as to ensure that the first strip 100 and the second strip 200 can be pressed in the positioning groove 613 smoothly by the positive electrode welding needle 623 and the negative electrode welding needle 624, thereby enhancing the positioning effect on the first strip 100 and the second strip 200, preventing the dislocation of the splicing sections of the first strip 100 and the second strip 200, and finally improving the splicing effect.

As shown in fig. 1 to 3, optionally, the roll changing device in the embodiment of the present application further includes a material shortage detection mechanism 8, where: the material shortage detection mechanism 8 is arranged on the mounting plate 1, and the working strip passes through the strip splicing mechanism 6, bypasses the material shortage detection mechanism 8 and reaches the subsequent strip preparation station A. The shortage detection mechanism 8 is used for detecting whether unreeling of the working strip is completed.

Through setting up lack material detection mechanism 8, realized the lack material detection to the work strip to ensure when the unreeling of work strip is accomplished, in time start the operation of changing rolls.

Optionally, the defect detecting mechanism 8 includes a guide rail 81, a balancing weight 82, a guiding wheel 83, a buffer wheel 84, and a sensor 85, wherein: the guide rail 81 is provided on the mounting plate 1 in the vertical direction, the guide wheel 83 is provided on the mounting plate 1 above the tape splicing mechanism 6, and the guide wheel 83 is near the upper end of the guide rail 81. The balancing weight 82 is slidably connected to the guide rail 81, the buffer wheel 84 is mounted on the balancing weight 82, and the sensor 85 is disposed on the guide rail 83 and near the lower end of the guide rail 81. The working tape is led by the traction mechanism 7 to pass through the leading-in wheel 83 and the buffer wheel 84 in turn and then enters the tape preparation station A.

When the unreeling of the working tape is not completed, the tension of the drawn working tape is large, the buffer wheel 84 is at a high position far away from the sensor 85 under the traction of the working tape, and the sensor 85 is not triggered. When the unwinding of the working strip is completed, the tension of the working strip is reduced and loosened, the buffer wheel 84 slides to a low position close to the sensor 85 under the driving of the balancing weight 82 thereon, and the sensor 85 is triggered to generate a material shortage signal.

The embodiment of the application also provides a roll changing method, which comprises the following steps:

a first roll for releasing the first strip and a second roll for releasing the second strip are provided.

The first strip is used as a working strip, the second strip is used as a standby strip, and the starting end of the second strip is fixed.

When the unreeling of the first strip meets the reel changing condition, the first strip is fixed, and the starting end of the second strip is connected with the first strip.

The first strip is severed between the splicing location of the first strip and the first roll, releasing the secured second strip.

And continuously feeding the second strip serving as a new working strip to finish one-time automatic roll changing.

After the automatic reel change is completed, a new first reel is provided for releasing the first strip and the start end of the first strip is fixed, i.e. the new first strip is used as a spare strip. And when the unreeling of the second strip meets the reeling condition, implementing the next automatic reeling.

The roll changing method provided in the embodiments of the present application may be implemented by the roll changing device provided in the embodiments of the present application, and of course, may be implemented by other roll changing devices with other suitable structures.

Compared with the traditional coil replacement mode, the coil replacement method provided by the embodiment of the application is adopted, the second coil for paying out the second strip can be installed before or during the discharging of the first coil, the stop time is not required, the quick connection of the second strip and the first strip can be automatically carried out after the first strip is used up, the second strip can be used for the next production after connection, so that the coil replacement efficiency is improved, and the coil replacement difficulty is reduced.

Another embodiment of the present application further provides another roll changing method, which is implemented by the roll changing device provided in the foregoing embodiments, where the roll changing method includes the following steps:

mounting a first roll for paying out a first strip 100 onto a first mounting roller 2;

mounting a second roll for paying out a second strip 200 onto a second mounting roller 3;

the strip traction mechanism 7 is controlled to clamp the working strip and draw the working strip backwards, so that the drawn working strip sequentially passes through the strip pressing mechanism 4, the strip cutting mechanism 5 and the strip splicing mechanism 6 and then reaches a strip preparation station A of the later path, and if the working strip is the first strip 100, the second strip 200 is a standby strip; if the working tape is the second tape 200, the first tape 100 is the standby tape.

The end of the standby strip is pulled, so that the end of the standby strip sequentially passes through the strip compressing mechanism 4 and the strip cutting mechanism 5 and then reaches the strip splicing mechanism 6, and the strip compressing mechanism 4 is controlled to compress the standby strip.

When the unreeling of the working tape is completed, the tape pressing mechanism 4 is controlled to press the working tape.

The control strap splicing mechanism 6 splices the end of the reserve strap with the working strap.

The control tape cutting mechanism 5 cuts the work tape after the completion of the splicing.

The control strip hold-down mechanism 4 releases the standby strip and the working strip after the cutting is completed.

The standby strip can be pulled back as the working strip of the next round.

Likewise, the roll replacement method provided by the embodiment of the application is adopted to replace the roll, and because the standby roll can be installed before or during the material discharging of the working roll, the machine is not required to be stopped, the machine stopping time is shortened, the standby strip and the working strip can be automatically and rapidly connected after the working strip is used up, the standby strip can be used for the next round of production after the connection, the roll replacement efficiency is improved, and the roll replacement difficulty is reduced.

Optionally, the roll changing method in the embodiment of the present application further includes: and controlling the material shortage detection mechanism to detect the material shortage of the working strip so as to determine whether the unreeling of the working strip is completed.

Therefore, the detection of the shortage of the working strip can be realized, and the coil replacement operation can be started in time when the coil unwinding of the working strip is completed.

The embodiment of the application further provides a strip preparation device, as shown in fig. 9, which includes the roll changing device 10, the pressing device 20, the cutting device 30 and the receiving table 40, wherein:

The roll changing device 10 is used for supplying a working strip to the strip preparation station A, the pressing device 20, the cutting device 30 and the carrying table 40 are all arranged at the strip preparation station A, and the working strip sequentially passes through the pressing device 20 and the cutting device 30 and then reaches the carrying table 40. The pressing device 20 is used for pressing the work strip after the work strip of a predetermined length reaches the receiving table 40, and the cutting device 30 is used for cutting the work strip to obtain a strip section. The abutment 40 is used to carry a strip section or the abutment 40 is used to carry a strip section and shape the strip section, such as shaping the strip section into an L or U shape.

It can be seen that the tape preparing apparatus provided in the embodiment of the present application realizes automatic preparation of the tape by the cooperation of the reel changer 10, the pressing device 20, the cutting device 30 and the receiving table 40.

The strip preparation device provided by the embodiment of the application is suitable for preparing bus bar sections, and can be used for preparing other strip sections.

The foregoing has outlined the detailed description of the invention in sufficient detail. It will be appreciated by those of ordinary skill in the art that the descriptions of the embodiments are merely exemplary and that all changes that come within the true spirit and scope of the disclosure should be so as to fall within the scope of the disclosure. The scope of the application is defined by the claims rather than by the description of the embodiments set forth above.

Claims (12)

1. The utility model provides a roll change device, its characterized in that, roll change device includes the mounting panel and installs first installation roller, second installation roller, strip hold-down mechanism, strip cutting mechanism, strip connect mechanism and strip traction mechanism on the mounting panel, wherein:

the first mounting roller is used for mounting a first material roll and driving the first material roll to rotate so as to discharge a first strip; the second installation roller is used for installing a second material roll and driving the second material roll to rotate so as to discharge a second strip;

the strip traction mechanism is used for clamping a working strip and traction the working strip backwards, the towed working strip sequentially passes through the strip pressing mechanism, the strip cutting mechanism and the strip splicing mechanism and then reaches a strip preparation station of a later path, and if the working strip is the first strip, the second strip is a standby strip; if the working strip is the second strip, the first strip is a standby strip;

the end part of the standby strip sequentially passes through the strip compressing mechanism and the strip cutting mechanism and then reaches the strip splicing mechanism, and the strip compressing mechanism is used for compressing the passing standby strip;

The strip pressing mechanism is also used for pressing the working strip when unreeling of the working strip is completed, the strip splicing mechanism is used for splicing the end part of the standby strip and the working strip together, the strip cutting mechanism is used for cutting the working strip after splicing is completed, and the strip pressing mechanism is used for releasing the standby strip and the working strip after cutting is completed.

2. The reel changer of claim 1, wherein the ribbon hold-down mechanism comprises a cutter head, a first hold-down portion, and a second hold-down portion, wherein:

the tool bit is arranged on the mounting plate;

the first pressing part is arranged on the mounting plate and positioned on the first side of the cutter head, a first pressing gap for the first strip to pass through is formed between the first pressing part and the first side wall of the cutter head, and the first pressing part is used for clamping the first strip on the first side wall of the cutter head;

the second pressing part is arranged on the mounting plate and located on the second side of the cutter head, a second pressing gap for the second strip to pass through is formed between the second pressing part and the second side wall of the cutter head, and the second pressing part is used for clamping the second strip on the second side wall of the cutter head.

3. A reel changer as claimed in claim 2, characterized in that:

the first pressing part comprises a first driver and a first pressing block, wherein the first driver is installed on the mounting plate, the first pressing block is connected to the driving end of the first driver, and the first driver is used for driving the first pressing block to move towards or away from the cutter head so as to press the first strip on the first side wall of the cutter head or release the first strip;

the second pressing part comprises a second driver and a second pressing block, wherein the second driver is installed on the installation plate, the second pressing block is connected to the driving end of the second driver, and the second driver is used for driving the second pressing block to move towards or away from the cutter head so as to press the second strip on the second side wall of the cutter head or release the second strip.

4. A reel changer as claimed in claim 2, characterized in that:

a first fixed cutting edge is formed at the junction of the first side wall of the cutter head and the upper end surface of the cutter head, and a second fixed cutting edge is formed at the junction of the second side wall of the cutter head and the upper end surface of the cutter head;

The tape cutting mechanism includes a first cutting portion and a second cutting portion, wherein:

the first cutting part is arranged on the mounting plate and positioned on the first side of the cutter head, a first moving blade is formed on the first cutting part, a first cutting gap for the first strip to pass through is formed between the first moving blade and the first fixed blade, and the first cutting part is configured to move towards the first fixed blade so as to cut the first strip;

the second cutting part is arranged on the mounting plate and positioned on the second side of the cutter head, a second moving blade is formed on the second cutting part, a second cutting gap for the second strip to pass through is formed between the second moving blade and the second fixed blade, and the second cutting part is configured to move towards the second fixed blade so as to cut the second strip.

5. The reel changer of claim 4, wherein:

the first cutting part comprises a third driver, a first adapter, a first connecting rod and a first movable cutter, wherein the third driver is installed on the mounting plate, the first adapter is connected to the driving end of the third driver, the first end of the first connecting rod is movably connected to the first adapter, the second end of the first connecting rod is rotatably connected to the cutter head, the first movable cutter is connected to the second end of the first connecting rod, and the first movable cutter is provided with a first movable cutter edge;

The third driver drives the first movable cutter to rotate towards the first fixed cutting edge through the first connecting rod so as to cut off the first strip;

the second cutting part comprises a fourth driver, a second adapter seat, a second connecting rod and a second movable cutter, wherein the fourth driver is installed on the mounting plate, the second adapter seat is connected to the driving end of the fourth driver, the first end of the second connecting rod is movably connected to the second adapter seat, the second end of the second connecting rod is rotatably connected to the cutter head, the second movable cutter is connected to the second end of the second connecting rod, and the second movable cutter is provided with a second movable cutter edge;

the fourth driver drives the second movable cutter to rotate towards the second fixed cutting edge through the second connecting rod so as to cut off the second strip.

6. The reel changer of claim 1, wherein the ribbon splicing mechanism comprises a positioning part and a welding part which are oppositely arranged on the mounting plate, wherein a welding gap for the first ribbon and the second ribbon to pass through is arranged between the positioning part and the welding part;

The weld and the locator are configured to weld the first and second strips within the weld gap.

7. The roll changing apparatus of claim 6, wherein:

the positioning part comprises a fifth driver and a positioning block, wherein the fifth driver is arranged on the mounting plate, the positioning block is connected to the mounting plate in a sliding manner and is connected with the driving end of the fifth driver, and a positioning groove is formed in the end face of the positioning block;

the welding part comprises a sixth driver, a welding needle mounting part, an anode welding needle and a cathode welding needle, wherein the sixth driver is mounted on the mounting plate, the welding needle mounting part is connected to the mounting plate in a sliding manner and is connected with the driving end of the sixth driver, and the anode welding needle and the cathode welding needle are mounted on the welding needle mounting part and point to the positioning groove;

the fifth driver and the sixth driver are used for driving the positioning block and the welding needle installation part to slide towards the middle to be close to each other or slide towards two sides to be separated, when the positioning block and the welding needle installation part slide towards the middle to be close to each other, the positive electrode welding needle and the negative electrode welding needle compress the first strip and the second strip into the positioning groove, and the positive electrode welding needle and the negative electrode welding needle are further configured to perform power-on welding on the compressed first strip and the compressed second strip.

8. The roll changing apparatus of claim 7, wherein the pin mounting portion comprises a slide, a first clamp block, and a second clamp block, wherein:

the sliding seat is connected to the mounting plate in a sliding manner and is connected with the driving end of the sixth driver;

the first clamping block is connected to the sliding seat through a first buffer assembly and is used for clamping one of the positive electrode welding needle and the negative electrode welding needle;

the second clamping block is connected to the sliding seat through a second buffer assembly and located below the first clamping block, and the second clamping block is used for clamping the other one of the positive electrode welding needle and the negative electrode welding needle.

9. The reel changer of claim 8, wherein the pin mount further comprises a first limiting plate and a second limiting plate, wherein:

the first limiting plate is connected to the first clamping block and is higher than the positioning block, and a first limiting groove is formed in the end face, facing the positioning block, of the first limiting plate;

the second limiting plate is connected to the second clamping block and lower than the positioning block, and a second limiting groove is formed in the end face, facing the positioning block, of the second limiting plate.

10. The roll changing apparatus of claim 1, further comprising a starved detection mechanism, wherein:

The material shortage detection mechanism is arranged on the mounting plate, and the working strip passes through the strip splicing mechanism and then bypasses the material shortage detection mechanism to reach a strip preparation station of a subsequent path;

the material shortage detection mechanism is used for detecting whether unreeling of the working strip is completed.

11. The roll changing apparatus of claim 10, wherein the starved detection mechanism comprises a rail, a counterweight, an intake wheel, a buffer wheel, and a sensor, wherein:

the guide rail is arranged on the mounting plate along the vertical direction, the guide wheel is arranged on the mounting plate and is positioned above the strip splicing mechanism, and the guide wheel is close to the upper end of the guide rail;

the balancing weight is connected to the guide rail in a sliding manner, the buffer wheel is installed on the balancing weight, and the sensor is arranged on the guide rail and is close to the lower end of the guide rail;

the working strip sequentially bypasses the leading-in wheel and the buffer wheel under the traction of the traction mechanism.

12. A tape preparation apparatus comprising a reel changer, a pressing device, a cutting device and a receiving station according to any one of claims 1 to 11, wherein:

The roll changing device is used for supplying the working strips to the strip preparation station, the pressing device, the cutting device and the carrying table are all arranged at the strip preparation station, and the working strips sequentially pass through the pressing device and the cutting device and then reach the carrying table;

the pressing device is used for pressing the working strip after the working strip with the preset length reaches the bearing table, and the cutting device is used for cutting the working strip to obtain a strip section;

the bearing table is used for bearing the strip section, or is used for bearing the strip section and shaping the strip section.