Tab feeding device

Abstract

The utility model discloses a pole lug feeding device which comprises a discharging mechanism, a feeding mechanism and a cutting mechanism, the feeding mechanism comprises a first driving unit, a sliding rail and a material clamping assembly, the first driving unit drives a first bearing seat of the material clamping assembly to slide on the sliding rail, and the material clamping assembly further comprises a clamping plate and a second driving unit. The second driving unit drives the clamping plate to clamp the tab, the cutting mechanism comprises a second bearing seat, a third driving unit, a deviation rectifying clamp, a cutter assembly, a laser module, a reflector and an airflow generating assembly, and the third driving unit drives the cutter assembly to cut the tab; the second bearing seat comprises a first bearing surface, a through hole penetrating through the first bearing surface is formed in the second bearing seat, the transmitting end of the laser module directly faces the reflector through the through hole, and the tab penetrates through a laser path between the laser module and the reflector; the airflow generating assembly sucks and / or blows air into the space between the reflector and the through hole. The device can accurately detect and control the tab cutting length, and the detection reliability is high.

Description

Technical Field

[0001] The utility model relates to the field of battery core production, in particular to a tab delivery device. Background Art

[0002] The tab feeding device can cut the wound tab roll and send it to the tab welding place for welding. The utility model CN211404621U discloses a tab feeding mechanism for a film making machine, and specifically divides the tab feeding action into the following steps. First, the tab of the tab raw material roll is pulled to the tensioning roller for tensioning and corrected by the tab correction mechanism. The corrected tab strip is introduced into the feeding mechanism. The feeding mechanism drives the clamping plate to clamp the tab and pull it in the conveying direction. After pulling for a distance, the clamping plate releases the tab and returns to the opposite position of the conveying direction, and then re-clamps the tab and pulls it in the conveying direction to realize the traction and feeding of the tab strip. The pulled tab strip will be sent to the cutter for cutting.

[0003] Since the tab strips are very small, the precision of cutting the tabs needs to be controlled very precisely. When the existing technology uses a feeding mechanism to feed the tabs to the cutter for cutting, since the feeding mechanism is a certain distance away from the cutting mechanism, the tab strips expand, contract and bend within this distance, resulting in a certain error between the distance the feeding mechanism pulls the tab strips each time and the standard distance, resulting in the length of the cut tabs not meeting the controlled standard length value. After the device has been operating for a long time, the error will gradually accumulate, eventually resulting in large-scale quality abnormalities in the cut tabs. Utility Model Content

[0004] The purpose of the utility model is to provide a tab feeding device which can accurately control the tab cutting length.

[0005] The utility model provides a tab feeding device, comprising a base and a discharge mechanism, a feeding mechanism and a cutting mechanism fixed on the base and arranged in sequence along the tab transmission direction, the feeding mechanism comprising a first driving unit, a slide rail and a clamping assembly, the slide rail extending on the base along the tab transmission direction, the first driving unit driving the clamping assembly to slide on the slide rail, the clamping assembly comprising a first supporting seat, a clamping plate and a second driving unit, the first supporting seat being slidably connected to the slide rail, the clamping plate being arranged at the movable end of the second driving unit, the second driving unit being fixed to the first supporting seat and being able to drive the clamping plate close to the first supporting seat to clamp the tab, and the cutting mechanism The cutting mechanism includes a second supporting seat, a third driving unit, and a correction clamp and a cutter assembly arranged in sequence along the conveying direction. The pole ear is conveyed to the upper part of the second supporting seat, and the third driving unit drives the cutter assembly to cut the pole ear; the cutting mechanism also includes a laser module, a reflector and an airflow generating assembly, the second supporting seat includes a first supporting surface, the second supporting seat is provided with a through hole passing through the first supporting surface, the emitting end of the laser module is facing the reflector through the through hole, the pole ear is conveyed to the upper part of the through hole and passes through the laser path between the laser module and the reflector; the airflow generating assembly sucks and / or blows air to the space between the reflector and the through hole.

[0006] As can be seen from the above scheme, the laser module and the reflective sheet can be used to detect the difference between the transmission distance of each tab and the standard distance, and then the first drive unit can fine-tune the sliding distance of the drive clamping assembly on the slide rail to eliminate the error in the feeding and cutting of the tab. Although the laser module and the reflective sheet can detect the transmission distance of the tab, the transmitted tab will absorb a lot of dust when passing through the reflective sheet and the laser path of the laser module, and in order to ensure the detection accuracy, the reflective sheet is set at a position close to the cutter assembly. When the cutter cuts the tab, a lot of fine particles will be generated. These dust and impurities will accumulate on the reflective sheet close to the cutter during long-term automated production, causing great interference to the detection of the laser module and seriously affecting the distance of the fine-tuning of the feeding mechanism. Therefore, the present application sets a dust removal device that is matched with the laser module and the reflective sheet to ensure the reliability of the detection. A through hole is provided on the first supporting surface of the second supporting seat of the present application to provide a laser path between the laser module and the reflector. When the tab is transmitted on the second supporting surface, it will pass through the through hole and can be detected by the laser module. The reflector is provided on one side of the through hole of the first supporting surface, and a part of the dust and impurities can be isolated by the first supporting surface. The airflow generating component can suck and / or blow air into the space between the reflector and the through hole to clean the surface of the reflector, thereby ensuring high accuracy of each detection.

[0007] A preferred solution is that the second supporting seat forms a chamber between the through hole and the reflective sheet, which is connected to the outside only through the through hole, and the airflow generating component sucks and / or blows air into the chamber.

[0008] It can be seen from this that setting up a chamber can prevent dust and impurities from entering from the side between the through hole and the reflector and covering the reflector. The chamber that connects the inside and outside only through the through hole can also enhance the suction or blowing strength of the air pump, so that dust and impurities that have just entered the chamber can be quickly removed.

[0009] A further solution is that the through hole extends in an elongated shape along the width direction of the tab.

[0010] It can be seen that different tab models will have different widths, and the elongated through-holes can be adapted to the detection and dust removal of different types of tabs.

[0011] A further solution is that the second supporting seat includes a base and a support seat connected from bottom to top, the support seat is provided with a first supporting surface and a through hole, a chamber is formed between the through hole and the base, the reflector is arranged on the top of the base and is located inside the chamber, the side wall of the support seat is provided with a vent connecting the inside and outside of the through hole, and the airflow generating component is connected to the vent.

[0012] It can be seen that the second supporting seat can be decomposed into two separate parts, the base and the support seat. Compared with processing the entire second supporting seat and installing the reflective sheet, the processing difficulty and cost of processing the two parts separately and combining them are greatly reduced.

[0013] A further solution is that the cutter assembly includes an upper cutter and a lower cutter, the top of the lower cutter portion includes a second supporting surface for supporting the tab, the second supporting surface is flush with the first supporting surface, and the third drive unit drives the upper cutter to move relative to the lower cutter and cut the tab.

[0014] It can be seen that the tab can smoothly transition between the first supporting surface and the second supporting surface, thereby preventing the tab from bending between the second supporting seat and the cutter assembly.

[0015] A further solution is that the lower cutter is fixed to the base, the chamber is located upstream of the lower cutter along the conveying direction, and the vent is located on the side wall of the support seat along the width direction of the tab.

[0016] It can be seen from this that in order to increase detection accuracy, the chamber needs to be close to the cutter assembly, shortening the distance between the cutter assembly and the reflective sheet in the chamber. The lower cutter is directly fixed to the side of the base, and the chamber is located upstream of the lower cutter. The inspected tabs are directly fed into the cutter assembly for cutting. In addition, because the chamber is close to the lower cutter, the entire cutting mechanism is very compact. To save space for component installation, vents are set on the side wall of the support base along the width of the tab, and the airflow generating component can directly blow or inhale air from the side wall of the chamber.

[0017] A further solution is that the cutting mechanism also includes a fourth drive unit, the movable end of the fourth drive unit is connected to a pressure block, the second support seat has a third supporting surface extending upstream of the through hole, and the fourth drive unit can drive the pressure block to move relative to the third supporting surface and press the pole ear passing through the top of the third supporting surface.

[0018] It can be seen from this that the tabs that are transferred and ready to be cut can be pressed by the pressing block first to prevent the tabs from being displaced during cutting.

[0019] A further solution is that a tab correction component is provided between the unloading mechanism and the feeding mechanism, and between the feeding mechanism and the cutting mechanism. The tab correction component includes two spaced-apart and corresponding wavy components, and a channel for tab transmission is formed between the two wavy components.

[0020] It can be seen that the tab correction component between the unloading mechanism and the feeding mechanism can straighten the tab strip pulled out of the unloading mechanism. A second tab correction component is set between the feeding mechanism and the cutting mechanism to straighten the tab again before cutting, thereby improving the flatness of the tab. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described with reference to the accompanying drawings. However, the embodiments in the accompanying drawings do not constitute any limitation to the present invention. A person skilled in the art can obtain other drawings based on the following drawings without creative effort.

[0022] Figure 1 It is a structural diagram of the cutting mechanism of an embodiment of the present utility model.

[0023] Figure 2 It is a front view of an embodiment of the present utility model.

[0024] Figure 3 It is a structural diagram of an embodiment of the present utility model.

[0025] Figure 4 It is a structural diagram of the second supporting seat and the lower cutting knife in an embodiment of the utility model.

[0026] Figure 5 It is a cross-sectional view of the second supporting seat and the lower cutting knife of the embodiment of the utility model.

[0027] Figure 6 This is an exploded view of the second supporting seat and the lower cutter in an embodiment of the present utility model. DETAILED DESCRIPTION

[0028] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0029] Reference Figures 1 to 6 This embodiment provides a tab feeding device, comprising a base 1 and a discharge mechanism 2, a feeding mechanism 3 and a cutting mechanism 4 fixed on the base 1 and arranged in sequence along the conveying direction of the tab 6. The discharge mechanism 2 is used to place the tab raw material strip and lead out the tab 6 strip. The feeding mechanism 3 can clamp the tab 6 and move it in the conveying direction. The tab 6 transferred to the cutting mechanism 4 will be cut. Among them, the feeding mechanism 3 includes a first driving unit 31, a slide rail 32 and a clamping assembly. The slide rail 32 extends to the upper part of the base 1 along the transmission direction of the pole ear. The clamping assembly includes a first supporting seat 331, a clamping plate 332 and a second driving unit 333. The first driving unit 31 is a driving motor, which is connected to the first supporting seat 331 through a screw rod 334. When the driving motor rotates, it drives the first supporting seat 331 screwed on the screw rod 334 to slide on the slide rail 32 through the screw rod 334. The second driving unit 333 is a cylinder, whose fixed part is fixedly provided on the first supporting seat 331, and the movable end is connected to the clamping plate 332. The second driving unit 333 can drive the clamping plate 332 at its movable end to approach or move away from the first supporting seat 331 in a direction perpendicular to the board surface of the first supporting seat 331, thereby clamping or releasing the pole ear 6 passing through the board surface of the first supporting seat 331. The cutting mechanism 4 includes a second supporting seat 41, a third driving unit 42, and a correcting clamp 43 and a cutter assembly 44 arranged in sequence along the transmission direction of the pole lug 6. The pole lug 6 strip pulled by the feeding mechanism 3 is transmitted to the first supporting surface 411 on the upper part of the second supporting seat 41, passes through the correcting clamp 43 and finally enters the cutter assembly 44 for cutting, wherein the correcting clamp 43 includes two, and the two correcting clamps 43 can slide in the width direction of the pole lug 6. The correcting clamp 43 can correct the pole lug 6 in the width direction to prevent the cutter assembly 44 from beveling the pole lug 6.

[0030] The cutting mechanism 4 of this embodiment further includes a laser module 45, a reflective sheet 46 and an airflow generating component, such as Figures 3 to 6As shown, the second support seat 41 includes a base 412 mounted on the base 1 and located at the bottom. A support seat 413 is mounted on the upper portion of the base 412. The upper surface of the support seat 413 is a first supporting surface 411. The support seat 413 is provided with a through hole 4131 on the first supporting surface 411. The through hole 4131 and the top of the base 412 form a chamber 4132 that communicates with the inside and outside through the through hole 4131. The reflective sheet 46 is disposed on the top of the base 412 and is placed horizontally, with its reflective surface facing the outside of the through hole 4131. The laser module 45 is disposed on the upper portion of the cutting mechanism 4, with its emitting end downwardly passing through the through hole 4131 and facing the reflective sheet 46. The strip of the tab 6 conveyed by the feeding mechanism 3 passes through the upper plane of the support seat 413 and the upper portion of the through hole 4131. The laser path between the laser module 45 and the reflective sheet 46 intersects with the conveying path of the tab through the through hole 4131.

[0031] In this embodiment, the cavity 4132 and the through hole 4131 on the upper portion of the cavity 4132 are both extended in the width direction of the tab 6 to facilitate the passage of tabs 6 of different widths. Figure 5 As shown, the lower portion of chamber 4132 extends in the opposite direction of the conveying direction of tab 6, while the upper portion narrows to through-hole 4131, forming a chamber 4132 with an L-shaped cross-section. The lower portion is wider to accommodate reflective sheet 46, while the upper portion is narrower to minimize dust from entering and contaminating reflective sheet 46. It also increases the airflow speed of the airflow generating assembly to absorb or blow air from dust within chamber 4132. The cutter assembly 44 includes an upper cutter 441 and a lower cutter 442. The third drive unit 42 is a cylinder with a movable end connected to the upper cutter 441. The third drive unit 42 can drive the upper cutter 441 to move relative to the lower cutter 442 to cut the tab 6. The lower cutter 442 is fixed to the base 412 and is located downstream of the chamber 4132 along the conveying direction. The top of the lower cutter 442 forms a second supporting surface 4421, which is flush with the first supporting surface 411. In addition, a clearance 443 is provided at the connection between the third drive unit 42 and the upper cutter 441 to facilitate the passage of laser light between the laser module 45 and the reflective sheet 46. A roller 444 is also provided between the lower cutter 442 and the through hole 4131, and the tab 6 can pass between the roller 444 and the first supporting surface 411.

[0032] A vent hole 4133 is formed on the sidewall of the support base 413 along the width of the tab. The airflow generating assembly is connected to the vent hole 4133 via a connector 471 and communicates with the cavity, allowing air to be sucked in or blown out of the cavity. The suction or blowing direction of the vent hole 4133 can be directly toward the reflector 46 or the space between the reflector 46 and the through hole 4131.

[0033] The cutting mechanism 4 in this embodiment further includes a fourth driving unit 48, such as Figure 1As shown, the fourth drive unit 48 is a cylinder, and a pressure block 481 is connected to its movable end. The second support seat 41 extends upstream of the cavity with a third support surface 482 flush with the first support surface 411 and the second support surface 4421. When the tab 6 is transferred to the cutter assembly 44 for cutting, the fourth drive unit 48 can drive the pressure block 481 at its movable end to move downward perpendicular to the third support surface 482, thereby pressing the tab 6 on the top of the third support surface 482. In addition, a tab correction assembly 5 is provided between the discharge mechanism 2 and the feeding mechanism 3 and between the feeding mechanism 3 and the cutting mechanism 4 in this embodiment. The tab correction assembly 5 includes two upper and lower spaced and corresponding wavy components, and a channel for the tab 6 to be transferred is provided between the two components. When the tab 6 passes through the channel between the tab correction assembly 5, the tab 6 can be squeezed and flattened.

[0034] The above embodiment merely represents one embodiment of the present invention. While the description is relatively specific and detailed, it should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be based on the appended claims.

Claims

1. A tab feeding device, comprising a base and a discharge mechanism, a feeding mechanism and a cutting mechanism fixed to the base and sequentially arranged along the tab conveying direction, the feeding mechanism comprising a first driving unit, a slide rail and a clamping assembly, the slide rail extending on the base along the tab conveying direction, the first driving unit driving the clamping assembly to slide on the slide rail, the clamping assembly comprising a first supporting seat, a clamping plate and a second driving unit, the first supporting seat being slidably connected to the slide rail, the clamping plate being provided at an active end of the second driving unit, the second driving unit being fixed to the first supporting seat and capable of driving the clamping plate to approach the first supporting seat to clamp the tab, the cutting mechanism comprising a second supporting seat, a third driving unit and a correction clamp and a cutter assembly sequentially arranged along the conveying direction, the tab being conveyed to the upper portion of the second supporting seat, the third driving unit driving the cutter assembly to cut the tab; It is characterized in that The cutting mechanism further includes a laser module, a reflective sheet, and an airflow generating assembly. The second supporting seat includes a first supporting surface. The second supporting seat is provided with a through hole penetrating the first supporting surface. The emitting end of the laser module is directly facing the reflective sheet through the through hole. The tab is transmitted to the upper portion of the through hole and passes through a laser path between the laser module and the reflective sheet. The airflow generating assembly sucks air and / or blows air to the space between the reflective sheet and the through hole.

2. The electrode tab device according to claim 1, characterized in that: The second supporting seat forms a chamber between the through hole and the reflective sheet, which is connected to the outside only through the through hole, and the airflow generating component sucks and / or blows air into the chamber.

3. The electrode tab device according to claim 1, characterized in that: The through hole extends in a long shape along the width direction of the tab.

4. The electrode tab device according to claim 2, characterized in that: The second supporting seat includes a base and a support seat connected from bottom to top, the support seat is provided with the first supporting surface and the through hole, the chamber is formed between the through hole and the base, the reflector is arranged on the top of the base and is located inside the chamber, the side wall of the support seat is provided with a vent hole connecting the inside and outside of the through hole, and the airflow generating component is connected to the vent hole.

5. The electrode tab device according to claim 4, characterized in that: The cutter assembly includes an upper cutter and a lower cutter. The top of the lower cutter portion includes a second supporting surface for supporting the tab. The second supporting surface is flush with the first supporting surface. The third driving unit drives the upper cutter to move relative to the lower cutter and cut the tab.

6. The electrode tab device according to claim 5, characterized in that: The lower cutter is fixed to the base, the chamber is located upstream of the lower cutter along the conveying direction, and the vent hole is located on the side wall of the support seat along the width direction of the tab.

7. The tab delivery device according to any one of claims 1 to 6, characterized in that: The cutting mechanism also includes a fourth driving unit, the movable end of the fourth driving unit is connected to a pressure block, the second supporting seat extends a third supporting surface upstream of the through hole, and the fourth driving unit can drive the pressure block to move relative to the third supporting surface and press the pole ear passing through the top of the third supporting surface.

8. The tab delivery device according to any one of claims 1 to 6, characterized in that: A tab correction assembly is provided between the discharge mechanism and the feeding mechanism, and between the feeding mechanism and the cutting mechanism. The tab correction assembly includes two spaced-apart and corresponding wavy components, and a channel for transmitting the tab is formed between the two wavy components.

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