Cover plate clamping mechanism

Abstract

The utility model provides a cover plate clamping mechanism, and relates to the field of battery manufacturing. The cover plate clamping mechanism comprises a support used for being fixedly connected with the mechanical arm; the clamping jaw mechanism comprises a clamping jaw driver and two clamping jaw execution parts, the clamping jaw driver is installed on the support, the clamping jaw driver is in transmission connection with the two clamping jaw execution parts, clamping parts are arranged at the ends, away from the clamping jaw driver, of the clamping jaw execution parts, and the clamping parts are used for being matched with the cover plate in a clamping mode; and the sheet pressing mechanism is installed on the support and comprises a pressing piece and a pressing driving piece, the pressing piece is located between the two clamping jaw execution parts, the pressing driving piece is connected between the support and the pressing piece, and the pressing driving piece is used for driving the pressing piece to press the protection sheet in the direction away from the support. The reject ratio of cells can be reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery manufacturing, in particular to a cover plate clamping mechanism. Background Art

[0002] In battery manufacturing, the protective sheet is usually fixed to the battery cell tab by ultrasonic welding. During welding, a cover plate is required to position the protective sheet, and the groove of the cover plate can accurately support the protective sheet.

[0003] After ultrasonic welding, the middle part of the protective sheet is connected to the tab, and the edge of the protective sheet will be stuck in the groove of the cover plate. When removing the cover plate, it is easy to pull the protective sheet, which will cause the tab of the battery cell to rupture, resulting in a high battery cell defect rate and affecting production efficiency. Therefore, in the process of clamping the cover plate after welding, the cover plate is easy to pull the protective sheet, resulting in the risk of battery cell tab rupture, resulting in high battery cell defect rate, low production efficiency and high cost. Utility Model Content

[0004] In order to solve the above problems, the purpose of the utility model is to provide a cover plate clamping mechanism to solve the problem that in the process of clamping the cover plate after welding, the cover plate is easily pulled together with the protective sheet, resulting in the risk of rupture of the battery cell tab, resulting in high battery cell defective rate, low production efficiency and high cost.

[0005] The technical solution of the cover plate clamping mechanism of the utility model is:

[0006] The cover plate clamping mechanism comprises: a bracket, the bracket being used to be fixedly connected to the mechanical arm;

[0007] A clamping mechanism, the clamping mechanism comprising a clamping driver and two clamping actuators, the clamping driver being mounted on the bracket, the clamping driver being in transmission connection with the two clamping actuators, the clamping actuator being provided with a clamping portion at an end away from the clamping driver, the clamping portion being used for clamping with the cover plate;

[0008] The sheet pressing mechanism is installed on the bracket, and the sheet pressing mechanism includes a pressing member and a pressing driving member. The pressing member is located between the two clamping jaw actuators, and the pressing driving member is connected between the bracket and the pressing member. The pressing driving member is used to drive the pressing member to press the protective sheet in a direction away from the bracket.

[0009] Furthermore, the pressing member has a plurality of pressing portions, and the plurality of pressing portions are protruding relative to the clamping portion in a direction away from the bracket.

[0010] Furthermore, the clamping member includes a pressing plate and a plurality of bosses, the pressing plate is connected to the clamping driving member, the plurality of bosses are spaced apart on a side of the pressing plate away from the bracket, and the end of the boss away from the pressing plate forms the clamping portion.

[0011] Furthermore, the pressure plate is arranged at intervals from the bracket, and a first guide rod is fixedly connected to a side of the pressure plate close to the bracket. The first guide rod is extended in a direction away from the surface of the pressure plate. A first linear bearing is also provided on the bracket, and the first guide rod is guided and cooperated with the first linear bearing.

[0012] Furthermore, the clamping driving member is a cylindrical compression spring, the cylindrical compression spring is sleeved on the outside of the first guide rod, and the cylindrical compression spring is connected between the bracket and the pressure plate.

[0013] Furthermore, the bracket is also equipped with a second guide rod, a cover spring is connected between the bracket and the second guide rod, a through hole is opened on the pressure plate for the second guide rod to pass through, and the end of the second guide rod away from the bracket is used for press-fitting with the cover.

[0014] Furthermore, the second guide rod is arranged in the middle of the pressing plate, and the end of the second guide rod is arranged close to the bracket relative to the clamping portion.

[0015] Further, the bracket includes a first support plate, a second support plate, a first side plate and a second side plate, the bracket has an X direction, a Y direction and a Z direction, the first support plate and the second support plate are arranged at intervals in the Z direction, and the first side plate and the second side plate are respectively connected between the first support plate and the second support plate;

[0016] The clamping driver is installed on the first support plate, and the two clamping actuators are symmetrically distributed on both sides of the first side plate or the second side plate; the clamping driver is installed on the second support plate, and the clamping member is arranged on the side of the second support plate away from the first support plate.

[0017] Furthermore, the clamping jaw driver is provided with a first push rod and a second push rod, the first push rod is fixedly connected to one of the clamping jaw actuators, the second push rod is fixedly connected to another of the clamping jaw actuators, and the ejection directions of the first push rod and the second push rod are oppositely arranged.

[0018] Furthermore, the clamping mechanism also includes an adapter, which is respectively connected between the first push rod and one of the clamping jaw actuators, and between the second push rod and another of the clamping jaw actuators. The bracket is also provided with a limit plate, and the limit plate is equipped with an adjusting top screw, and the adjusting top screw cooperates with the adapter to stop.

[0019] Beneficial effects: The cover plate clamping mechanism adopts the design form of a bracket, a clamping mechanism and a sheet pressing mechanism. The clamping mechanism's clamping driver is installed on the bracket, and the clamping driver can drive the two clamping actuators to move, thereby clamping the cover plate after the protective sheet is welded, so as to achieve the purpose of effectively clamping and separating the cover plate. In addition, the pressing member of the sheet pressing mechanism is located between the two clamping actuators, and the pressing driving member is connected between the bracket and the pressing member. The pressing driving member can drive the pressing member to press the protective sheet away from the bracket, ensuring that the welded protective sheet is subjected to a reliable clamping and holding force, and preventing the clamping of the cover plate from pulling the protective sheet.

[0020] The working principle is as follows: during the process of clamping the cover plate after welding, the entire clamping mechanism first moves to the position where the clamping claw actuator clamps the cover plate. Since the clamping mechanism is designed with a sheet pressing mechanism, the pressing drive of the sheet pressing mechanism causes the pressing member to first press the protective sheet and generate a pressing and holding force on the protective sheet. Then, when clamping and separating the cover plate, the pressing member will continue to generate a pressing and holding force on the protective sheet. When the cover plate and the protective sheet are completely separated, the pressing member will no longer generate a pressing force on the protective sheet.

[0021] During this process, the pressing mechanism presses the protective sheet, preventing the cover from pulling the protective sheet and the risk of rupture of the battery cell tabs, reducing the battery cell defective rate, improving production efficiency, and effectively controlling production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional schematic diagram of a cover plate clamping mechanism in a specific embodiment of the cover plate clamping mechanism of the utility model;

[0023] Figure 2 It is a schematic front view of a cover plate clamping mechanism in a specific embodiment of the cover plate clamping mechanism of the utility model;

[0024] Figure 3 It is a three-dimensional schematic diagram of the cover plate clamping mechanism in a specific embodiment of the cover plate clamping mechanism of the utility model when clamping the cover plate.

[0025] In the figure: 1- bracket, 11- first support plate, 12- second support plate, 13- first side plate, 14- second side plate, 15- limit plate, 16- adjusting top screw, 2- clamping mechanism, 20- clamping driver, 201- first push rod, 202- second push rod, 21- clamping actuator, 210- clamping part, 22- adapter, 3- pressing mechanism, 30- pressing part, 300- pressing plate, 301- boss, 302- pressing part, 31- pressing driver, 32- first linear bearing, 33- first guide rod, 34- second linear bearing, 35- second guide rod, 36- cover spring, 4- cover. DETAILED DESCRIPTION

[0026] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0027] The term "parallel" in this application includes not only the absolute parallel situation, but also the generally parallel situation conventionally recognized in engineering, such as "parallel" refers to the state where the angle formed by a straight line, a straight line and a plane, or a plane and a plane is -1° to 1°; at the same time, "vertical" also includes not only the absolute vertical situation, but also the generally vertical situation conventionally recognized in engineering, such as "vertical" refers to the state where the angle formed by a straight line, a straight line and a plane, or a plane and a plane is 89° to 91°. Equal distances or equal angles include not only the absolute equal situation, but also the generally equal situation conventionally recognized in engineering, that is, there may be a certain error, such as the state where the tolerance range is -1% to 1%.

[0028] The specific embodiment of the cover plate clamping mechanism of the utility model is as follows: Figures 1 to 3 As shown, the cover plate clamping mechanism includes: a bracket 1, which is used to be fixedly connected to the robot arm; a clamping mechanism 2, which includes a clamping driver 20 and two clamping actuators 21, the clamping driver 20 is installed on the bracket 1, and the clamping driver 20 is transmission-connected to the two clamping actuators 21, and the end of the clamping actuator 21 away from the clamping driver 20 is provided with a clamping part 210, and the clamping part 210 is used to clamp and cooperate with the cover plate 4.

[0029] It also includes a pressing mechanism 3, which is installed on the bracket 1. The pressing mechanism 3 includes a clamping member 30 and a clamping driving member 31. The clamping member 30 is located between the two clamping jaw actuators 21. The clamping driving member 31 is connected between the bracket 1 and the pressing member 30. The clamping driving member 31 is used to drive the pressing member 30 to compress the protective sheet in a direction away from the bracket 1.

[0030] The cover plate clamping mechanism adopts the design form of a bracket 1, a clamping mechanism 2 and a sheet pressing mechanism 3. The clamping driver 20 of the clamping mechanism 2 is installed on the bracket 1. The clamping driver 20 can drive the two clamping actuators 21 to operate, thereby clamping the cover plate 4 after the protection plate is welded, so as to achieve the purpose of effectively clamping and separating the cover plate 4. In addition, the pressing member 30 of the sheet pressing mechanism 3 is located between the two clamping actuators 21, and the pressing driving member 31 is connected between the bracket 1 and the pressing member 30. The pressing driving member 31 can drive the pressing member 30 to press the protection plate in a direction away from the bracket 1, ensuring that the welded protection plate is subjected to a reliable clamping and holding force, and preventing the clamping of the cover plate 4 from pulling the protection plate.

[0031] The working principle is as follows: in the process of clamping the cover plate 4 after welding, the entire clamping mechanism first moves to the position where the clamping claw actuator 21 clamps the cover plate 4. Since the clamping mechanism is designed with a sheet pressing mechanism 3, the pressing driving member 31 of the sheet pressing mechanism 3 causes the pressing member 30 to first press the protective sheet and generate a pressing and holding force on the protective sheet. Then, when clamping and separating the cover plate 4, the pressing member 30 will continue to generate a pressing and holding force on the protective sheet. When the cover plate 4 and the protective sheet are completely separated, the pressing member 30 will no longer generate a pressing force on the protective sheet.

[0032] During this process, the pressing mechanism 3 presses the protective sheet, preventing the cover plate 4 from pulling the protective sheet, preventing the risk of rupture of the battery cell tab, reducing the battery cell defect rate, improving production efficiency, and effectively controlling production costs.

[0033] In this embodiment, the pressing member 30 has a plurality of pressing parts 302, and the plurality of pressing parts 302 are arranged to protrude relative to the clamping part 210 in a direction away from the bracket 1, so as to ensure that the pressing member 30 first presses the protective sheet and can continuously provide a pressing force in the process of clamping and separating the cover plate 4. Specifically, the pressing member 30 includes a pressing plate 300 and a plurality of protrusions 301, the pressing plate 300 is connected to the pressing driving member 31, and the plurality of protrusions 301 are arranged at intervals on a side of the pressing plate 300 away from the bracket 1, and the end of the protrusion 301 away from the pressing plate 300 forms a pressing part 302. There are four protrusions 301, and the four protrusions 301 are distributed at the four vertices of the square, which can effectively avoid the cover plate 4 and align with the protective sheets at four positions respectively.

[0034] As a further preferred solution, the pressure plate 300 is arranged at intervals from the bracket 1, and a first guide rod 33 is fixedly connected to the side of the pressure plate 300 close to the bracket 1, and the first guide rod 33 is extended in the direction away from the surface of the pressure plate 300. The bracket 1 is also provided with a first linear bearing 32, and the first guide rod 33 is guided and matched with the first linear bearing 32. The matching relationship between the first guide rod 33 and the first linear bearing 32 can play a precise guiding role for the pressure plate 300, ensuring that the clamping and holding force generated by the sheet pressing mechanism 3 and the protective sheet is more stable and reliable. Specifically, the clamping drive 31 is a cylindrical compression spring, which is sleeved on the outside of the first guide rod 33, and the cylindrical compression spring is connected between the bracket 1 and the pressure plate 300.

[0035] In this embodiment, the bracket 1 is also provided with a second guide rod 35 for guiding, and a cover plate spring 36 is connected between the bracket 1 and the second guide rod 35. A through hole for the second guide rod 35 to pass through is provided on the pressure plate 300, and the end of the second guide rod 35 away from the bracket 1 is used for press-fitting with the cover plate 4. The second guide rod 35 passes through the through hole of the pressure plate 300, and can generate elastic pressure in the direction away from the bracket 1 for the clamped cover plate 4. The elastic pressure is arranged perpendicular to the surface of the cover plate 4, and can ensure the stability when the cover plate 4 is clamped. In addition, the second guide rod 35 is arranged in the middle of the pressure plate 300, and the end of the second guide rod 35 is arranged close to the bracket 1 relative to the clamping part 302. A second linear bearing 34 is also provided on the bracket 1, and the second guide rod 35 is guided and matched with the second linear bearing 34.

[0036] Among them, the bracket 1 includes a first support plate 11, a second support plate 12, a first side plate 13 and a second side plate 14. The bracket 1 has an X direction, a Y direction and a Z direction. The first support plate 11 and the second support plate 12 are arranged at intervals in the Z direction, and the first side plate 13 and the second side plate 14 are respectively connected between the first support plate 11 and the second support plate 12; the clamping jaw driver 20 is installed on the first support plate 11, and the two clamping jaw actuators 21 are symmetrically distributed on both sides of the first side plate 13 or the second side plate 14; the clamping driving member 31 is installed on the second support plate 12, and the clamping member 30 is arranged on the side of the second support plate 12 away from the first support plate 11.

[0037] Specifically, the gripper driver 20 is provided with a first push rod 201 and a second push rod 202, wherein the first push rod 201 is fixedly connected to one gripper actuator 21, and the second push rod 202 is fixedly connected to another gripper actuator 21, and the ejection directions of the first push rod 201 and the second push rod 202 are oppositely arranged. The gripper driver 20 may be a double-acting cylinder, which includes a cylinder body and two reverse push rods, namely the first push rod 201 and the second push rod 202, and the two push rods are controlled to extend or retract synchronously, thereby completing the clamping action on the cover plate 4. In other embodiments, the gripper driver may also be two separate cylinders, the cylinder bodies of the two cylinders are respectively mounted on the bracket, and the two cylinders are controlled at the same time to make the two push rods extend or retract synchronously.

[0038] In addition, the clamp mechanism 2 also includes an adapter 22, which is respectively connected between the first push rod 201 and one clamp actuator 21, and between the second push rod 202 and another clamp actuator 21. The bracket 1 is also provided with a limit plate 15, and the limit plate 15 is installed with an adjustment screw 16, and the adjustment screw 16 is engaged with the adapter 22. The limit plate 15 and the adjustment screw 16 can limit the stroke size of the adapter 22 and the push rod, ensuring that the two clamp actuators 21 can move away from each other to a set distance and accurately clamp the cover plate 4.

[0039] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A cover plate clamping mechanism, characterized in that: include: A bracket (1), wherein the bracket (1) is used to be fixedly connected to the robot arm; A clamping mechanism (2), the clamping mechanism (2) comprising a clamping driver (20) and two clamping actuators (21), the clamping driver (20) being mounted on the bracket (1), the clamping driver (20) being in transmission connection with the two clamping actuators (21), the end of the clamping actuator (21) away from the clamping driver (20) being provided with a clamping portion (210), the clamping portion (210) being used for clamping and cooperating with the cover plate (4); A sheet pressing mechanism (3), the sheet pressing mechanism (3) is installed on the bracket (1), the sheet pressing mechanism (3) comprises a pressing member (30) and a pressing driving member (31), the pressing member (30) is located between the two clamping jaw actuators (21), the pressing driving member (31) is connected between the bracket (1) and the pressing member (30), and the pressing driving member (31) is used to drive the pressing member (30) to press the protective sheet in a direction away from the bracket (1).

2. The cover plate clamping mechanism according to claim 1, characterized in that: The pressing member (30) has a plurality of pressing portions (302), and the plurality of pressing portions (302) are arranged to protrude relative to the clamping portion (210) in a direction away from the bracket (1).

3. The cover plate clamping mechanism according to claim 2, characterized in that: The clamping member (30) comprises a pressing plate (300) and a plurality of bosses (301); the pressing plate (300) is connected to the clamping driving member (31); the plurality of bosses (301) are arranged at intervals on a side of the pressing plate (300) away from the bracket (1); and the end of the boss (301) away from the pressing plate (300) forms the clamping portion (302).

4. The cover plate clamping mechanism according to claim 3, characterized in that: The pressure plate (300) is arranged at an interval from the bracket (1); a first guide rod (33) is fixedly connected to a side of the pressure plate (300) close to the bracket (1); the first guide rod (33) is extended in a direction away from the surface of the pressure plate (300); a first linear bearing (32) is also provided on the bracket (1); the first guide rod (33) is guided and matched with the first linear bearing (32).

5. The cover plate clamping mechanism according to claim 4, characterized in that: The pressing driving member (31) is a cylindrical compression spring, which is sleeved on the outside of the first guide rod (33) and connected between the bracket (1) and the pressure plate (300).

6. The cover plate clamping mechanism according to claim 3, characterized in that: The bracket (1) is also equipped with a second guide rod (35), a cover plate spring (36) is connected between the bracket (1) and the second guide rod (35), a through hole is provided on the pressure plate (300) for the second guide rod (35) to pass through, and the end of the second guide rod (35) away from the bracket (1) is used for pressing and fitting with the cover plate (4).

7. The cover plate clamping mechanism according to claim 6, characterized in that: The second guide rod (35) is arranged in the middle of the pressing plate (300), and the end of the second guide rod (35) is arranged relative to the pressing portion (302) and close to the bracket (1).

8. The cover plate clamping mechanism according to claim 1, characterized in that: The bracket (1) comprises a first support plate (11), a second support plate (12), a first side plate (13) and a second side plate (14); the bracket (1) has an X direction, a Y direction and a Z direction; the first support plate (11) and the second support plate (12) are arranged at intervals in the Z direction; the first side plate (13) and the second side plate (14) are respectively connected between the first support plate (11) and the second support plate (12); The clamping jaw driver (20) is mounted on the first support plate (11), and the two clamping jaw actuators (21) are symmetrically distributed on both sides of the first side plate (13) or the second side plate (14); the clamping driving member (31) is mounted on the second support plate (12), and the clamping member (30) is arranged on a side of the second support plate (12) away from the first support plate (11).

9. The cover plate clamping mechanism according to claim 1, characterized in that: The clamping jaw driver (20) is provided with a first push rod (201) and a second push rod (202); the first push rod (201) is fixedly connected to one of the clamping jaw actuators (21); the second push rod (202) is fixedly connected to another of the clamping jaw actuators (21); and the ejection directions of the first push rod (201) and the second push rod (202) are opposite.

10. The cover plate clamping mechanism according to claim 9, characterized in that: The clamping jaw mechanism (2) also includes an adapter (22), and the adapter (22) is respectively connected between the first push rod (201) and one of the clamping jaw actuators (21), and between the second push rod (202) and another of the clamping jaw actuators (21). The bracket (1) is also provided with a limit plate (15), and the limit plate (15) is installed with an adjustment top screw (16), and the adjustment top screw (16) is in stop cooperation with the adapter (22).

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