Belt splicing device

Abstract

The utility model discloses a belt connecting device which comprises a belt connecting platform and a lifting part, the belt connecting platform is provided with a supporting face, the supporting face is used for supporting a battery material coiled material, the lifting part is movably connected with the belt connecting platform and has a working state and a standby state, in the working state, the lifting part lifts the battery material coiled material, and in the standby state, the lifting part lifts the battery material coiled material. And in the standby state, the lifting part puts down the battery material coiled material, so that the battery material coiled material is attached to the supporting surface. According to the belt splicing device, the battery material coiled material can be lifted, so that the bonding piece can be conveniently placed, and the operation difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production, in particular to a belt splicing device. Background Art

[0002] The production and manufacturing of lithium-ion batteries is a process that is closely linked to each other. Among them, the pole piece manufacturing process can be subdivided into pole piece coating, pole piece rolling, pole piece slitting, pole piece drying and other processes, and subsequent processes such as slitting and die cutting are also involved.

[0003] In the above process, continuous pole pieces are usually wound into pole rolls for transportation and storage. In the continuous production process, pole rolls are replaced or continuous pole pieces are damaged due to other reasons (such as equipment failure or pole piece wrinkles, etc.), so some pole pieces need to be cut and discarded before production can continue, and there is a need for splicing. The related technology manually lifts the two parts of the pole piece upstream and downstream of the position where splicing is required, places the adhesive at the bottom of the two parts of the pole piece that need to be spliced, and then bonds the pole piece.

[0004] However, manual operation requires lifting the two pole pieces and placing the adhesive at the same time, which makes the operation difficult. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a tape splicing device, which can lift the battery material coil so as to place the adhesive, thereby reducing the difficulty of operation.

[0006] According to the embodiment of the utility model, the tape splicing device includes a tape splicing platform and a lifting piece. The tape splicing platform has a supporting surface, and the supporting surface is used to support the battery material coil. The lifting piece is movably connected to the tape splicing platform and has a working state and a standby state. In the working state, the lifting piece lifts the battery material coil to make the battery material coil leave the supporting surface. In the standby state, the lifting piece puts down the battery material coil to make the battery material coil fit onto the supporting surface.

[0007] According to the tape splicing device of the utility model, by providing a lifting member with a working state and a standby state, the connection end of the battery material coil can be lifted when the lifting member is in the working state so that the adhesive member can be placed on the support surface, and when in the standby state, the connection end of the battery material coil can be put down. In this way, the connection ends of two battery material coils to be connected can be connected by the adhesive member placed on the support surface. Compared with the prior art of manually lifting the battery material coil and placing the adhesive member at the same time, the operation difficulty is lower and the tape splicing efficiency is higher.

[0008] According to some embodiments of the utility model, the lifting member is located in a first position in a working state and in a second position in a standby state, and the battery material coil is a pole piece; in the first position, the highest point of the lifting member is higher than the supporting surface to lift the connecting end of the pole piece, and in the second position, the highest point of the lifting member is lower than the supporting surface, or is flush with the supporting surface to avoid the pole piece.

[0009] According to some embodiments of the utility model, the belt connection platform is provided with a support groove, and the opening of the support groove is located on the support surface, and the lifting member is telescopically connected to the support groove to switch between the first position and the second position.

[0010] According to some embodiments of the utility model, it also includes a cutting groove, which is arranged on the supporting surface, and the two sides of the cutting groove are respectively the upstream side and the downstream side; there are at least two lifting members, and at least two lifting members are respectively arranged on the upstream side and the downstream side.

[0011] According to some embodiments of the utility model, at least one of the upstream side and the downstream side is provided with a first adsorption portion, the first adsorption portion is arranged between the cutting groove and the lifting member, the first adsorption portion is used to adsorb the adhesive member, and the adhesive member is used to bond the two pole pieces.

[0012] According to some embodiments of the present invention, there are at least two first adsorption parts, and the at least two first adsorption parts are respectively arranged on the upstream side and the downstream side.

[0013] According to some embodiments of the utility model, the belt splicing device further comprises a conveying member, which is arranged on the downstream side and located on the side of the lifting member away from the cutting groove, and the conveying member has a conveying surface, which is used to convey the pole piece.

[0014] According to some embodiments of the utility model, the conveying surface is provided with a second adsorption portion, and the second adsorption portion is used for adsorbing the electrode piece.

[0015] According to some embodiments of the utility model, the belt connection platform is provided with a conveying groove, the opening of the conveying groove is located on the supporting surface, the conveying member is arranged in the conveying groove, and the conveying surface and the supporting surface are in the same plane.

[0016] According to some embodiments of the utility model, the belt connecting device also includes a belt pressing member, which is arranged on the upstream side and located on the side of the lifting member away from the conveying member. The belt pressing member is movably connected to the belt connecting platform and has a third position and a fourth position; in the third position, the belt pressing member presses against the belt connecting platform to press the pole piece against the belt connecting platform, and in the fourth position, the belt pressing member is spaced apart from the belt connecting platform to loosen the pole piece.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a top view of a tape splicing device according to an embodiment of the present application;

[0019] Figure 2 is a structural schematic diagram of a tape splicing device according to an embodiment of the present application;

[0020] Figure 3 is a flow chart of a method for performing tape splicing using the tape splicing device of an embodiment of the present application;

[0021] Figure 4 is a schematic diagram of step 1a) of splicing a tape using the tape splicing device of an embodiment of the present application;

[0022] Figure 5 is a schematic diagram of step 1b) of splicing a tape using the tape splicing device of an embodiment of the present application;

[0023] Figure 6 is a schematic diagram of placing an adhesive on one side of a pole piece in step 2 of performing tape splicing using the tape splicing device of an embodiment of the present application;

[0024] Figure 7 is a schematic diagram of folding the adhesive member in step 2 of performing tape splicing using the tape splicing device of an embodiment of the present application;

[0025] Figure 8 is a schematic diagram of lateral bonding on the other side of the pole piece in step 2 of tape splicing using the tape splicing device of an embodiment of the present application;

[0026] Fig. 9 It is a schematic diagram of longitudinal bonding on the other side of the pole piece in step 2 of splicing using the splicing device of an embodiment of the present application.

[0027] Reference numerals:

[0028] Tape splicing device 100,

[0029] The tape connection platform 10, the support surface 10a, the upstream side 10a1, the downstream side 10a2, the support groove 11, the first adsorption part 12, the cutting groove 13, the conveying groove 14,

[0030] Lifting member 20, upstream lifting member 21, downstream lifting member 22,

[0031] The conveying member 30, the conveying surface 30a, the conveying shaft 31, the conveying belt 32, the second adsorption part 32a,

[0032] Pressing belt 40,

[0033] Cutting pieces 50,

[0034] Pole piece 200 , upstream pole piece 201 , downstream pole piece 202 , host side 300 , winding / unwinding side 400 , deviation corrector 500 , adhesive 600 . DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0036] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the applicability of other processes and / or the use of other materials.

[0037] The following describes a tape splicing device 100 according to an embodiment of the present invention with reference to the accompanying drawings.

[0038] Reference Figure 1 and Figure 2 According to the embodiment of the utility model, the tape splicing device 100 includes a tape splicing platform 10 and a lifting member 20. The tape splicing platform 10 has a supporting surface 10a, and the supporting surface 10a is used to support the battery material coil. The lifting member 20 is movably connected to the tape splicing platform 10 and has a working state and a standby state. In the working state, the lifting member 20 lifts the connecting end of the battery material coil so that the connecting end of the battery material coil leaves the supporting surface 10a. In the standby state, the lifting member 20 puts down the connecting end of the battery material coil so that the connecting end of the battery material coil is attached to the supporting surface 10a.

[0039] The battery material coil may be an uncoated foil or the like. For ease of description, the following description will be made taking the electrode sheet 200 as an example.

[0040] Specifically, refer to Figure 1 and Figure 2The tape splicing device 100 in the embodiment of the utility model includes a tape splicing platform 10, which is used to complete the connection between the upstream pole piece 201 and the downstream pole piece 202. The tape splicing platform 10 has a supporting surface 10a, and the supporting surface 10a includes an upstream side 10a1 and a downstream side 10a2. The upstream side 10a1 supports the upstream pole piece 201, and the downstream side 10a2 supports the downstream pole piece 202, thereby improving the stability of the tape splicing and protecting the upstream pole piece 201 and the downstream pole piece 202.

[0041] The tape splicing device 100 further includes a lifting member 20, which includes an upstream lifting member 21 provided on the upstream side 10a1 and a downstream lifting member 22 provided on the downstream side 10a2. By providing the upstream lifting member 21 and the downstream lifting member 22, the upstream pole piece 201 and the downstream pole piece 202 to be connected can be lifted, so that adhesives can be placed on the bottom surfaces of the upstream pole piece 201 and the downstream pole piece 202, thereby connecting the upstream pole piece 201 and the downstream pole piece 202. Compared with the prior art of manually lifting the upstream pole piece 201 and the downstream pole piece 202 and placing adhesives at the same time, the operation difficulty is lower and the tape splicing efficiency is higher. The lifting member 20 is movably connected to the tape splicing platform 10 to facilitate switching between different states. The lifting member 20 has a working state and a standby state. In the working state, the upstream lifting member 21 lifts the upstream pole piece 200, and the downstream lifting member 22 lifts the downstream pole piece 202, so that the upstream pole piece 201 and the downstream pole piece 202 leave the upstream side 10a2 and the downstream side 10a3 respectively. In this way, there are gaps between the upstream pole piece 201 and the upstream side 10a2 and between the downstream pole piece 202 and the downstream side 10a3 respectively, which is convenient for placing the adhesive on the support surface 10a. In the standby state, the upstream lifting member 21 puts down the upstream pole piece 201, and the downstream lifting member 22 puts down the downstream pole piece 202, so that the upstream pole piece 201 and the downstream pole piece 202 are respectively attached to the upstream side 10a2 and the downstream side 10a3, so that the adhesive placed on the support surface 10a can bond the upstream pole piece 201 and the downstream pole piece 202 to be connected.

[0042] Therefore, refer to Figure 1 and Figure 2 According to the tape splicing device 100 of the utility model, by providing a lifting member 20 with a working state and a standby state, the upstream pole piece 201 and the downstream pole piece 202 can be lifted as needed to place the adhesive on the support surface 10a. Compared with the prior art of manually lifting the upstream pole piece 201 and the downstream pole piece 202 and placing the adhesive at the same time, the operation difficulty is lower and the tape splicing efficiency is higher.

[0043] It can be understood that the positions of the lifting member 20 in the working state and the standby state can be the same or different. For example, the upstream lifting member 21 can lift the connection end of the upstream pole piece 201 from the upper surface of the upstream pole piece 201. At this time, the positions of the upstream lifting member 21 in the working state and the standby state can be the same or different, as long as it can be spaced from the upstream side 10a2, wherein the spacing setting can be spaced along the thickness direction of the tape connection platform 10, or can be spaced along the length or width direction of the tape connection platform 10, etc.; the upstream lifting member 21 can also lift the connection end of the upstream pole piece 201 from the lower surface of the upstream pole piece 201. At this time, the positions of the upstream lifting member 21 in the working state and the standby state are different, and can be spaced along the thickness direction of the tape connection platform 10, or can be spaced along the length or width direction of the tape connection platform 10, etc. The way in which the downstream lifting member 22 lifts the downstream pole piece 102 is the same as the way in which the upstream lifting member 21 lifts 102, which will not be repeated here.

[0044] In some embodiments of the present invention, referring to Figure 1 and Figure 3 The lifting member 20 is located at a first position when in working state and at a second position when in standby state, and the battery material roll is a pole piece 200; in the first position, the highest point of the lifting member 20 is higher than the supporting surface 10a to lift the connecting end of the pole piece 200, and in the second position, the highest point of the lifting member 20 is lower than the supporting surface 10a, or is flush with the supporting surface 10a to avoid the pole piece 200.

[0045] Specifically, the positions of the upstream lifting member 21 in the working state and the standby state are different, namely the first position and the second position, and in the first position, the highest point of the upstream lifting member 21 is higher than the supporting surface 10a to lift the connection end of the upstream pole piece 201, and in the second position, the highest point of the upstream lifting member 21 is lower than the supporting surface 10a, or is flush with the supporting surface 10a to avoid the upstream pole piece 201, that is, the upstream lifting member 21 lifts the upstream pole piece 201 from the lower surface of the upstream pole piece 201, extends out of the supporting surface 10a in the working state to support the upstream pole piece 201, and retracts in the standby state to avoid the upstream pole piece 201, and has a simple structure and is not easy to cause damage to the upstream pole piece 201. The first position and the second position of the downstream lifting member 22 are the same as the first position and the second position of the upstream lifting member 21, and will not be repeated here.

[0046] In some embodiments of the present invention, referring to Figure 1 and Figure 2 The belt connection platform 10 is provided with a supporting groove 11, and the opening of the supporting groove 11 is located at the supporting surface 10a, and the lifting member 20 is telescopically connected to the supporting groove 11 to switch between the first position and the second position.

[0047] By providing a support groove 11 with an opening located on the support surface 10a, the lifting member 20 is connected to the support groove 11, so that the lifting member 20 can be easily extended from the support surface 10a and retracted into the support groove 11, thereby realizing the switching between the first position and the second position.

[0048] Specifically, the upstream lifting member 21 is connected to the support groove 11 located at the upstream side 10a2, and the downstream lifting member 22 is connected to the support groove 11 located at the downstream side 10a3.

[0049] In some embodiments, the lifting member 20 may be a retractable member, or the lifting member 20 may be connected to the output end of the driving member to achieve retractability. The driving member may be driven by a motor, a cylinder, etc. The driving member may be disposed in the supporting groove 11, or may be connected to other positions of the belt connection platform 10, and its output shaft may be connected to the lifting member 20.

[0050] Of course, the present application is not limited thereto, and in other embodiments, the belt connection platform 10 may further be provided with a supporting through hole, and the lifting member 20 is provided in the supporting through hole and connected to the driving member.

[0051] In some embodiments of the present invention, referring to Figure 1 and Figure 2 The belt splicing device 100 also includes a cutting groove 13, which is arranged on the supporting surface 10a, and the two sides of the cutting groove 13 are respectively an upstream side 10a1 and a downstream side 10a2; there are at least two lifting members 20, and at least two lifting members 20 are respectively arranged on the upstream side 10a1 and the downstream side 10a2.

[0052] By setting the cutting groove 13, the cutting piece 50 can be avoided, so that the cutting piece 50 can cut the upstream pole piece 201 and / or the downstream pole piece 202 at the cutting groove 13. The ends of the upstream pole piece 201 and / or the downstream pole piece 202 after cutting are neat and easy to connect. At least two upstream lifting pieces 21 and downstream lifting pieces 22 are set respectively on the upstream side 10a2 and the downstream side 10a3, which can lift the upstream pole piece 201 and the downstream pole piece 202 to be connected located on the upstream side 10a2 and the downstream side 10a3, respectively, so as to facilitate the placement of the adhesive on the support surface 10a, so that after the upstream pole piece 201 and the downstream pole piece 202 are put down, the adhesive can connect the upstream pole piece 201 and the downstream pole piece 202 to be connected together.

[0053] Specifically, there may be two or more lifting members 20. When there are two lifting members 20, one upstream lifting member 21 and one downstream lifting member 22 are respectively provided on the upstream side 10a2 and the downstream side 10a3. When there are more than two lifting members 20, one upstream lifting member 21 and one downstream lifting member 22 are respectively provided on the upstream side 10a2 and the downstream side 10a3. The remaining lifting members 20 may be evenly provided on the upstream side 10a2 and the downstream side 10a3, or randomly provided on the upstream side 10a2 and the downstream side 10a3. Preferably, the number of lifting members 20 is an even number, so that they are evenly provided on the upstream side 10a2 and the downstream side 10a3.

[0054] In some embodiments, the upstream lifting member 21 is a lifting rod, and the upstream lifting member 21 forms a certain angle with the direction from the upstream pole piece 201 to the downstream pole piece 202. For example, the angle may be 30°, 45°, 60°, 90°, etc. Preferably, the angle between the lifting rod and the direction from the upstream pole piece 201 to the downstream pole piece 202 is 90°. Among them, the length of the upstream lifting member 21 in the direction perpendicular to the direction from the upstream pole piece 201 to the downstream pole piece 202 may be equal to the width of the upstream pole piece 201 or greater than the width of the upstream pole piece 201 to stably support the upstream pole piece 201. The structure of the downstream lifting member 22 and its positional relationship with the downstream pole piece 202 are the same as the structure of the above-mentioned upstream lifting member 21 and its positional relationship with the upstream pole piece 201, and will not be repeated here.

[0055] The extension direction of the cutting groove 13 forms a certain angle with the direction from the upstream pole piece 201 to the downstream pole piece 202. For example, the angle may be 30°, 45°, 60°, 90°, etc. Preferably, the extension direction of the cutting groove 13 forms an angle of 90° with the direction from the upstream pole piece 201 to the downstream pole piece 202. The length of the cutting groove 13 in the direction perpendicular to the direction from the upstream pole piece 201 to the downstream pole piece 202 may be equal to the width of the upstream pole piece 201 or greater than the width of the upstream pole piece 201, so as to cut the upstream pole piece 201.

[0056] In some embodiments of the present invention, referring to Figure 1 and Figure 2 At least one of the upstream side 10a1 and the downstream side 10a2 is provided with a first adsorption portion 12, and the first adsorption portion 12 is provided between the cutting groove 13 and the lifting member 20, and the first adsorption portion 12 is used to adsorb the adhesive member, and the adhesive member is used to bond the two pole pieces 200.

[0057] By setting a first adsorption portion 12 on at least one of the upstream side 10a1 and the downstream side 10a2, when the adhesive is placed on the support surface 10a, the adhesive can be adsorbed on the support surface 10a through the first adsorption portion 12, and the adhesive is not easy to move and deviate, thereby ensuring effective bonding of the upstream pole piece 201 and / or the downstream pole piece 202.

[0058] Specifically, the first adsorption portion 12 may be a first adsorption hole penetrating the tape connection platform 10 , and the extension direction of the first adsorption hole may be parallel to the thickness direction of the tape connection platform 10 , or form a certain angle, or form an L-shaped, U-shaped or other hole.

[0059] In some embodiments of the present invention, referring to Figure 1 and Figure 2 There are at least two first adsorption parts 12, and the at least two first adsorption parts 12 are respectively arranged on the upstream side 10a2 and the downstream side 10a3.

[0060] At least two first adsorption parts 12 are respectively arranged on the upstream side 10a2 and the downstream side 10a3, so that after the adhesive is adsorbed by the first adsorption part 12, it covers the cutting groove 13 and can connect the upstream pole piece 201 located on the upstream side 10a2 and the downstream pole piece 202 located on the downstream side 10a3.

[0061] Specifically, there may be two or more first adsorption parts 12. When there are two first adsorption parts 12, one first adsorption part 12 is respectively provided on the upstream side 10a2 and the downstream side 10a3. When there are more than two first adsorption parts 12, one first adsorption part 12 is respectively provided on the upstream side 10a2 and the downstream side 10a3. The remaining first adsorption parts 12 may be evenly provided on the upstream side 10a2 and the downstream side 10a3, or may be randomly provided on the upstream side 10a2 and the downstream side 10a3. Preferably, the number of the first adsorption parts 12 is an even number, so that they are evenly provided on the upstream side 10a2 and the downstream side 10a3, so that the adhesive parts on the upstream side 10a2 and the downstream side 10a3 are evenly stressed. Furthermore, the first adsorption parts 12 are evenly distributed on the upstream side 10a2 and the downstream side 10a3, and the length of the first adsorption in the direction perpendicular to the direction from the upstream pole piece 201 to the downstream pole piece 202 may be equal to the width of the upstream pole piece 201 or greater than the width of the upstream pole piece 201.

[0062] In some embodiments of the present invention, referring to Figure 1 and Figure 2 The tape splicing device 100 further includes a conveying member 30 , which is disposed on the downstream side 10a3 and located on the side of the lifting member 20 away from the cutting groove 13 . The conveying member 30 has a conveying surface 30a , which is used to convey the upstream pole piece 200 .

[0063] By arranging the conveying member 30 at the downstream side 10a3 of the lifting member 20 away from the cutting groove 13, the downstream pole piece 202 can be conveyed to the tape connection area 10a1 through the conveying surface 30a of the conveying member 30. The downstream pole piece 202 is conveyed by the conveying member 30, which improves the stability of the conveying of the downstream pole piece 202, and the downstream pole piece 202 is not easily bent, wrinkled or damaged during the conveying process.

[0064] Specifically, the conveying member 30 includes two conveying shafts 31 spaced apart from each other in the direction from the downstream pole piece 202 to the upstream pole piece 201, and a conveying belt 32 connected to the two conveying shafts 31. The conveying roller is driven to rotate by a conveying driving member. There is friction between the conveying shaft 31 and the conveying belt 32 to drive the conveying belt 32 to move around the conveying shaft 31, so that the downstream pole piece 202 on the conveying belt 32 moves to the belt connecting area 10a1.

[0065] In some embodiments of the present invention, referring to Figure 1 and Figure 2 The conveying surface 30a is provided with a second adsorption portion 32a, and the second adsorption portion 32a is used to adsorb the downstream pole piece 202.

[0066] By setting the second adsorption portion 32a on the conveying surface 30a, the second adsorption portion 32a can adsorb the downstream pole piece 202 located on the conveying surface 30a. In this way, during the process of the conveying member 30 conveying the downstream pole piece 202, the downstream pole piece 202 is not easily offset, thereby improving the alignment of the downstream pole piece 202, and the tension of the downstream pole piece 202 is more balanced and not easily damaged.

[0067] Specifically, the second adsorption portion 32a can be a second adsorption hole that penetrates the conveying surface 30a. For example, the conveying belt 32 can be provided with a vacuum adsorption hole to achieve adsorption of the downstream pole piece 202. The extension direction of the second adsorption hole can be parallel to the thickness direction of the belt connection platform 10, or form a certain angle, or form an L-shaped, U-shaped or other hole.

[0068] In some embodiments of the present invention, referring to Figure 1 and Figure 2 The belt connection platform 10 is provided with a conveying groove 14, the opening of the conveying groove 14 is located on the supporting surface 10a, the conveying member 30 is arranged in the conveying groove 14, and the conveying surface 30a and the supporting surface 10a are in the same plane.

[0069] The conveying groove 14 is provided to facilitate installation of the conveying member 30. The opening of the conveying groove 14 is located on the support surface 10a, so that the conveying member 30 can convey the downstream pole piece 202 through the opening. The conveying surface 30a and the support surface 10a are in the same plane, thus ensuring the flatness of the downstream pole piece 202 during the conveying process, and preventing bending and wrinkling.

[0070] In some embodiments, the extending direction of the transfer groove 14 forms a certain angle with the direction from the downstream pole piece 202 to the upstream pole piece 201, for example, the angle may be 30°, 45°, 60°, 90°, etc. Preferably, the extending direction of the transfer groove 14 forms an angle of 90° with the direction from the downstream pole piece 202 to the upstream pole piece 201. The length of the transfer groove 14 in the direction perpendicular to the direction from the downstream pole piece 202 to the upstream pole piece 201 may be equal to the width of the downstream pole piece 202 or greater than the width of the downstream pole piece 202, so as to transfer the downstream pole piece 202.

[0071] In some embodiments, the transmission drive member can be installed in the transmission groove 14. Of course, the transmission drive member can also be installed in other positions of the tape connection platform 10, as long as it can be connected with the transmission shaft 31 and drive the transmission shaft 31 to rotate.

[0072] In some embodiments of the present invention, referring to Figure 1 and Figure 2 The belt splicing device 100 also includes a belt pressing member 40, which is arranged on the upstream side 10a2 and is located on the side of the lifting member 20 away from the conveying member 30. The belt pressing member 40 is movably connected to the belt splicing platform 10 and has a third position and a fourth position; in the third position, the belt pressing member 40 presses against the belt splicing platform 10 to press the pole piece 200 against the belt splicing platform 10, and in the fourth position, the belt pressing member 40 is spaced apart from the belt splicing platform 10 to loosen the pole piece 200.

[0073] By setting a belt pressing member 40 on the upstream side 10a2 of the lifting member 20 away from the conveying member 30, the tension of the upstream pole piece 201 can be balanced and the alignment of the upstream pole piece 201 can be improved. The belt pressing member 40 is movably connected to the belt connecting platform 10 so as to switch between the third position and the fourth position. In the third position, the belt pressing member 40 presses against the belt connecting platform 10 to press the upstream pole piece 201 against the belt connecting platform 10. In this way, the tension of the upstream pole piece 201 can be balanced, so that the upstream pole piece 201 is not prone to wrinkles. In the fourth position, the belt pressing member 40 is spaced apart from the belt connecting platform 10 to loosen the upstream pole piece 201 so as to remove the upstream pole piece 201.

[0074] Specifically, the belt pressing member 40 is arranged above the support surface 10a of the belt connection platform 10 so as to abut against the support surface 10a when pressed down, and press the upstream pole piece 201 against the support surface 10a. The belt pressing member 40 is driven by the belt pressing driving member to switch between the third position and the fourth position. Among them, the heights of the third position and the fourth position can be the same or different. When the heights of the third position and the fourth position are the same, the belt pressing member 40 presses against the support surface 10a at the third position, and is spaced apart from the support surface 10a in the horizontal direction at the fourth position; when the heights of the third position and the fourth position are different, the belt pressing member 40 presses against the support surface 10a at the third position, and is spaced apart from the support surface 10a in the vertical direction at the fourth position.

[0075] In some embodiments, the belt pressing member 40 is a belt pressing rod, which forms a certain angle with the direction from the upstream pole piece 201 to the downstream pole piece 202, for example, the angle may be 30°, 45°, 60°, 90°, etc. Preferably, the belt pressing rod forms an angle of 90° with the direction from the upstream pole piece 201 to the downstream pole piece 202. The length of the belt pressing member 40 in the direction perpendicular to the direction from the upstream pole piece 201 to the downstream pole piece 202 may be equal to the width of the upstream pole piece 201 or greater than the width of the upstream pole piece 201, so as to completely press the upstream pole piece 201.

[0076] The belt pressing drive can be a linear drive or a rotation drive, etc.

[0077] The method of using the utility model to connect the belt is as follows: Figure 3 , including the following steps:

[0078] The lifting member 20 is switched to the working state to lift the connection ends of the upstream pole piece 201 and the downstream pole piece 202 to be connected;

[0079] Place the adhesive member on the support surface 10a and cover the cutting groove 13;

[0080] The lifting member 20 is switched to a standby state, and the connecting ends of the upstream pole piece 201 and the downstream pole piece 202 to be connected are lowered, and the adhesive member bonds the upstream pole piece 201 and the downstream pole piece 202 to be connected.

[0081] By adopting the tape splicing device 100 in the above embodiment, the difficulty of tape splicing operation is reduced and the efficiency of tape splicing is improved.

[0082] Specifically, before the lifting member 20 is switched to the working state, the pole piece 200 is further cut; wherein the cutting of the pole piece 200 includes cutting the upstream pole piece 201 and / or cutting the downstream pole piece 202.

[0083] The method of using the utility model to connect the belt is as follows: Figure 4-Figure 9, connect the pole piece on the reeling / unwinding side to the pole piece on the host side, wherein the belt pressing member 40 is close to the host side, and the transmission member 30 is close to the reeling / unwinding side, including the following steps:

[0084] Step 1. Reference Figure 4-Figure 5 , first cut the pole piece 200, specifically, a) when the old pole roll is close to the end, stop the upstream pole piece 201 from running, press the upstream pole piece 201 against the support surface 10a by the belt pressing member 40, and then remove the old pole roll; b) replace the new pole roll, place the front end of the new pole roll on the conveying surface 30a, open the second adsorption portion 32a of the conveying member 30, and rotate the transmission shaft of the conveying member 30 to drive the downstream pole piece 202 to align with the upstream pole piece 201, specifically, tighten and straighten the two sides of the downstream pole piece 202 until the correction side is aligned, detect the deviation at 0±1mm through the correction device, and then cut the uneven part of the downstream pole piece 202;

[0085] Step 2: Reference Figure 6-Figure 9 , and then the upstream pole piece 201 and the upstream pole piece 202 are bonded, specifically, the lifting member 20 is switched to the working state, and the upstream lifting member 21 and the downstream lifting member 22 respectively lift the connection ends of the upstream pole piece 201 and the downstream pole piece 202 to be connected;

[0086] Place the adhesive on the cutting groove 13 of the support surface 10a and cover the cutting groove 13. The length of the adhesive exceeds the width of the pole piece 200 by 100mm-200mm, and the adhesive surface faces the pole piece 200.

[0087] The lifting member 20 is switched to the standby state, and the connecting ends of the upstream pole piece 201 and the downstream pole piece 202 to be connected are lowered, and then the excess parts of the two ends of the adhesive are folded upward, and the correction side is aligned, leaving a 3mm-10mm part of the adhesive on the non-correction side;

[0088] Take another adhesive whose length is about 50mm-100mm smaller than the pole piece 200 and bond the pole piece 200 on the upper surface of the pole piece 200, then walk the tape toward the winding / unwinding side for 0.8m-1.5m, and after the adhesive passes the conveyor 30 for 100mm-200mm, bond three adhesives arranged at intervals in a direction perpendicular to the aforementioned adhesive, with a length of 100mm-200mm, to complete the tape splicing.

[0089] Example 2

[0090] The method of using the utility model to connect the belt is as follows: Figure 4-Figure 9 , receiving the host side pole piece / unwinding side pole piece, wherein the belt pressing member 40 is close to the host side, and the conveying member 30 is close to the receiving / unwinding side, including the following steps:

[0091] Step 1. Reference Figure 4-Figure 5, first cut the pole piece 200, specifically, a) when the old pole roll is close to the end, stop the tape running of the downstream pole piece 202, adsorb the downstream pole piece 202 to the support surface 10a through the conveyor 30, and then remove the old pole roll; b) replace the new pole roll, switch the belt pressing member 40 to the fourth position, place the front end of the new pole roll on the upstream side 10a1, adjust the alignment of the upstream pole piece 201 and the downstream pole piece 202, specifically, tighten and straighten the two sides of the upstream pole piece 201 until the correction side is aligned, detect the deviation at 0±1mm through the correction device, then switch the belt pressing member 40 to the third position, and cut the uneven part of the downstream pole piece 202;

[0092] The remaining steps are the same as those in Example 1 and will not be repeated here.

[0093] Example 3

[0094] The method for splicing a belt using the belt splicing device of the utility model comprises the following steps:

[0095] a) in step 1 is: when the old pole roll approaches the end, the tape movement of the upstream pole piece 201 is stopped, and the upstream pole piece 201 is pressed against the support surface 10a by the tape pressing member 40. At the same time, the second adsorption portion 32a of the conveying member 30 is opened to adsorb the upstream pole piece 201, and then the upstream pole piece 201 is cut at the cutting groove 13 by the cutting member 300. The second adsorption portion 32a of the conveying member 30 is closed, the upstream pole piece 201 is released, and then the old pole roll is removed.

[0096] The remaining steps are the same as those in Example 1 and will not be repeated here.

[0097] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0098] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0099] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or means that the first feature is lower in level than the second feature.

[0100] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0101] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A tape splicing device, characterized in that: include: A tape splicing platform (10), the tape splicing platform (10) having a supporting surface (10a), the supporting surface (10a) being used to support a battery material coil; A lifting member (20) is movably connected to the tape connection platform (10) and has a working state and a standby state. In the working state, the lifting member (20) lifts the connection end of the battery material coil so that the connection end of the battery material coil leaves the support surface (10a). In the standby state, the lifting member (20) lowers the connection end of the battery material coil so that the connection end of the battery material coil is attached to the support surface (10a).

2. The tape splicing device according to claim 1, characterized in that: The lifting member (20) is located at a first position in a working state and at a second position in a standby state, and the battery material coil is a pole piece (200); In the first position, the highest point of the lifting member (20) is higher than the supporting surface (10a) to lift the connecting end of the pole piece (200), and in the second position, the highest point of the lifting member (20) is lower than the supporting surface (10a) or is flush with the supporting surface (10a) to avoid the pole piece (200).

3. The tape splicing device according to claim 2, characterized in that: The belt connection platform (10) is provided with a support groove (11), and the opening of the support groove (11) is located on the support surface (10a), and the lifting member (20) is telescopically connected to the support groove (11) to switch between the first position and the second position.

4. The tape splicing device according to claim 2 or 3, characterized in that: It also includes a cutting groove (13), wherein the cutting groove (13) is arranged on the supporting surface (10a), and the two sides of the cutting groove (13) are respectively an upstream side (10a1) and a downstream side (10a2); There are at least two lifting members (20), and the at least two lifting members (20) are respectively arranged on the upstream side (10a1) and the downstream side (10a2).

5. The tape splicing device according to claim 4, characterized in that: At least one of the upstream side (10a1) and the downstream side (10a2) is provided with a first adsorption portion (12), the first adsorption portion (12) being provided between the cutting groove (13) and the lifting member (20), the first adsorption portion (12) being used for adsorbing an adhesive member, and the adhesive member being used for bonding the two pole pieces (200).

6. The tape splicing device according to claim 5, characterized in that: There are at least two first adsorption parts (12), and the at least two first adsorption parts (12) are respectively arranged on the upstream side (10a1) and the downstream side (10a2).

7. The tape splicing device according to claim 4, characterized in that: It also includes a conveying member (30), which is arranged on the downstream side (10a2) and located on the side of the lifting member (20) away from the cutting groove (13), and the conveying member (30) has a conveying surface (30a), and the conveying surface (30a) is used to convey the pole piece (200).

8. The tape splicing device according to claim 7, characterized in that: The conveying surface (30a) is provided with a second adsorption portion (32a), and the second adsorption portion (32a) is used for adsorbing the pole piece (200).

9. The tape splicing device according to claim 7, characterized in that: The belt connection platform (10) is provided with a conveying groove (14), the opening of the conveying groove (14) is located on the supporting surface (10a), the conveying member (30) is arranged in the conveying groove (14), and the conveying surface (30a) and the supporting surface (10a) are in the same plane.

10. The tape splicing device according to claim 7, characterized in that: It also includes a belt pressing member (40), which is arranged on the upstream side (10a1) and located on the side of the lifting member (20) away from the conveying member (30), and the belt pressing member (40) is movably connected to the belt connecting platform (10) and has a third position and a fourth position; In the third position, the belt pressing member (40) is pressed against the belt connecting platform (10) to press the pole piece (200) against the belt connecting platform (10), and in the fourth position, the belt pressing member (40) is spaced apart from the belt connecting platform (10) to loosen the pole piece (200).

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