Automatic bending and cutting equipment for metal strips for lithium-ion battery packs

Abstract

The utility model discloses an automatic bending and cutting device for metal strips for lithium-ion battery packs, comprising a knife holder arranged at the bottom, an opening formed on the surface of the knife holder, a bending mechanism for the metal strip arranged in the opening, a U-shaped slot formed on the top of the knife holder, a cutting mechanism for the metal strip arranged in the U-shaped slot, and cutting mechanism supporting vertical plates arranged at both ends of the U-shaped slot; the knife holder comprises a lower knife sliding surface and an upper knife sliding surface, the bending mechanism comprises a lower knife and a bending auxiliary mechanism arranged on the side of the lower knife away from the lower knife sliding surface for pressing the metal strip, the bending auxiliary mechanism comprises an upper pressing block and a lower pressing block, and the metal strip is arranged between the upper pressing block and the lower pressing block; the cutting mechanism comprises an upper knife. The equipment of the utility model can greatly improve the efficiency of bending and cutting.

Description

Technical Field

[0001] The utility model belongs to the technical field of lithium-ion battery packs, and in particular relates to automatic bending and cutting equipment for metal strips used in lithium-ion battery packs. Background Art

[0002] At present, polymer lithium-ion soft-pack batteries are widely used in model toy products due to their advantages of fast charging speed, large battery capacity and environmental friendliness. Polymer lithium-ion soft-pack batteries are composed of battery cells, discharge wires, etc. If the battery is to be discharged, the battery cell and the discharge wire need to be connected. Usually, a right-angle metal material (for example, a right-angle metal strip, that is, the metal strip is cut into a right-angle shape) is transferred between the battery cell and the discharge wire.

[0003] In the prior art, the equipment for cutting right-angle metal strips has a complex structure and low cutting efficiency and cannot be widely used.

[0004] Therefore, there is an urgent need for a right-angle metal strip bending and cutting device with a simple structure to improve the cutting efficiency so that the device can be widely used. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides an automatic bending and cutting device for metal strips for lithium-ion battery packs, which can greatly improve the bending and cutting efficiency.

[0006] The utility model provides an automatic bending and cutting device for a metal strip for a lithium-ion battery pack, comprising a tool holder arranged at the bottom, an opening is provided on the surface of the tool holder, a bending mechanism of the metal strip is arranged in the opening, a U-shaped slot is provided above the tool holder, a cutting mechanism of the metal strip is arranged in the U-shaped slot, and vertical plates supporting the cutting mechanism are arranged at both ends of the U-shaped slot;

[0007] The knife holder comprises a lower knife sliding surface and an upper knife sliding surface, the bending mechanism comprises a lower knife and a bending auxiliary mechanism arranged on the side of the lower knife away from the lower knife sliding surface for pressing the metal strip, the bending auxiliary mechanism comprises an upper pressing block and a lower pressing block, and the metal strip is arranged between the upper pressing block and the lower pressing block;

[0008] The cutting mechanism comprises an upper knife.

[0009] The above-mentioned automatic bending and cutting equipment for metal strips for lithium-ion battery packs is characterized in that: the bending mechanism also includes a bending cylinder arranged below the lower knife, a bending cylinder base arranged below the bending cylinder and fixedly connected to the bending cylinder, the lower knife and the bending cylinder are fixedly connected by a lower knife fixing block, and the lower knife fixing block and the bending cylinder are fixedly connected by a pair of screws and nuts.

[0010] The above-mentioned automatic bending and cutting equipment for metal strips for lithium-ion battery packs is characterized in that: the bending auxiliary mechanism also includes a bending auxiliary cylinder arranged above the upper clamping block and fixedly connected to the upper clamping block, and a bending auxiliary cylinder base arranged above the bending auxiliary cylinder and fixedly connected to the bending auxiliary cylinder.

[0011] The above-mentioned automatic bending and cutting equipment for metal strips for lithium-ion battery packs is characterized in that: the cutting mechanism also includes a cutting cylinder bottom arranged above the upper knife, a cutting cylinder base arranged above the cutting cylinder and fixedly connected to the cutting cylinder, the upper knife and the cutting cylinder are fixedly connected by an upper knife fixing block, and the upper knife fixing block and the cutting cylinder are fixedly connected by a pair of bolts and nuts.

[0012] The above-mentioned automatic bending and cutting equipment for metal strips for lithium-ion battery packs is characterized in that: the cutting mechanism also includes a pair of upper knife clamping blocks symmetrically arranged at both ends of the upper knife on the side away from the upper knife sliding surface.

[0013] The above-mentioned automatic bending and cutting equipment for metal strips for lithium-ion battery packs is characterized in that: there is a gap between the lower knife and the upper clamping block that is adapted to the thickness of the metal strip, and a groove is provided on a surface of the upper clamping block close to the lower knife.

[0014] The above-mentioned automatic bending and cutting equipment for metal strips for lithium-ion battery packs is characterized in that: it also includes a feeding mechanism arranged on one side of the bending mechanism for conveying the metal strip to the bending mechanism, and the feeding mechanism includes a driving mechanism, a transmission mechanism, and a synchronous belt that enables the driving mechanism and the transmission mechanism to rotate synchronously;

[0015] The driving mechanism comprises a driving motor and a motor pulley driven by the driving motor, and the transmission mechanism comprises a driving mechanism and a driven mechanism; the driving mechanism comprises a main pulley, a driving gear and a driving wheel for connecting the main pulley and the driving gear, and the driven mechanism comprises a driven wheel, a driven gear and a pair of driven wheel support frames arranged at both ends of the driven wheel axial direction for supporting the driven wheel, the pair of driven wheel support frames are respectively provided with openings, both ends of the driven wheel are arranged in the openings, and the driving gear and the driven gear are meshed;

[0016] The synchronous belt drives the main pulley, the driving gear and the driven gear to rotate synchronously under the drive of the motor pulley.

[0017] The above-mentioned automatic bending and cutting equipment for metal strips for lithium-ion battery packs is characterized in that it also includes a limiting mechanism arranged below the driven wheel for limiting the transmission direction of the metal strip, and the limiting mechanism includes a pair of limiting plates arranged below the driven wheel, and a cover plate arranged below the limiting plate for supporting the limiting plate.

[0018] The above-mentioned automatic bending and cutting equipment for metal strips for lithium-ion battery packs is characterized in that it also includes a supporting mechanism, which includes a bending and cutting mechanism support frame arranged below the cover plate, and a material support frame arranged above the bending and cutting mechanism support frame for supporting the metal strip.

[0019] The above-mentioned automatic bending and cutting equipment for metal strips for lithium-ion battery packs is characterized in that: the surfaces of the driving wheel and the driven wheel are covered with rubber adapted to the driving wheel and the driven wheel, and a pair of springs are placed in a pair of the openings.

[0020] The beneficial effects are inferred as follows:

[0021] In the prior art, the equipment for cutting right-angle metal strips has a complex structure and low cutting efficiency and cannot be widely used.

[0022] In the technical solution of the utility model, the lower knife of the bending mechanism moves upward along the lower knife sliding surface of the knife holder to bend the metal strip. At the same time, the upper clamping block and the lower clamping block of the bending mechanism cooperate, so that the metal strip can be tightly pressed between the upper clamping block and the lower clamping block, thereby achieving the bending of the metal strip and obtaining a right-angle metal strip. Furthermore, the upper knife of the cutting mechanism slides downward along the upper knife sliding surface of the knife holder, thereby achieving the cutting of the right-angle metal strip.

[0023] It can be seen that the automatic bending and cutting device for metal strips in the utility model has a simple structure. By adopting the automatic bending and cutting device for metal strips in the utility model, the bending and cutting efficiency of metal strips can be greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the structure of the automatic bending and cutting device for the metal strip for lithium-ion battery pack provided by the utility model;

[0025] Figure 2 for Figure 1 A longitudinal section view of the middle knife holder, the knife and the pressing block;

[0026] Figure 3 for Figure 1 Plan views of the sliding surfaces of the lower and middle cutters and the upper cutter;

[0027] Figure 4 for Figure 1A schematic diagram of the structure of the intermediate bending mechanism bending the metal strip;

[0028] Figure 5 for Figure 1 Schematic diagram of the structure of the middle cutting mechanism cutting a right-angle metal strip;

[0029] Figure 6 for Figure 1 Structural schematic diagram of the middle bending mechanism and cutting structure;

[0030] Figure 7 for Figure 1 Structural diagram of the feeding mechanism;

[0031] Figure 8 for Figure 1 Schematic diagram of the structure of the middle support mechanism.

[0032] Description of reference numerals:

[0033] Knife holder 1; metal belt 2; cutting mechanism supporting vertical plate 3;

[0034] Lower knife sliding surface 4; upper knife sliding surface 5; lower knife 6;

[0035] Upper pressing block 7; lower pressing block 8; upper knife 9;

[0036] Bending cylinder 10; bending cylinder base 11; lower knife fixing block 12;

[0037] Screw nut 13; bending auxiliary cylinder 14; bending auxiliary cylinder base 15;

[0038] Cutting cylinder 16; cutting cylinder base 17; upper knife fixing block 18;

[0039] Bolt and nut 19; upper knife clamping block 20; groove 21;

[0040] Synchronous belt 22; driving motor 23; motor pulley 24;

[0041] Main pulley 25; driving gear 26; driving wheel 27;

[0042] Driven wheel 28; driven gear 29; driven wheel support frame 30;

[0043] Limiting plate 31; cover plate 32; bending and cutting mechanism support frame 33; material support frame 34. DETAILED DESCRIPTION

[0044] The utility model is further described in detail below in conjunction with the embodiments and drawings. It is understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for the convenience of description, only the parts related to the utility model are shown in the drawings.

[0045] It should be noted that, in the absence of conflict, the embodiments of the present invention, that is, the features of the embodiments, can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0046] In the prior art, the equipment for cutting right-angle metal strips has a complex structure and low cutting efficiency and cannot be widely used.

[0047] Based on this, the utility model provides an automatic bending and cutting device for metal strips for lithium-ion battery packs. The automatic bending and cutting device for metal strips provided by the utility model has a simple structure. The automatic bending and cutting device for metal strips provided by the utility model can greatly improve the bending and cutting efficiency.

[0048] The utility model provides an automatic bending and cutting device for a metal strip for a lithium-ion battery pack, comprising a tool holder 1 arranged at a lower portion, an opening being provided on the surface of the tool holder 1, a bending mechanism for a metal strip 2 being provided in the opening, a U-shaped slot being provided above the tool holder 1, a cutting mechanism for the metal strip 2 being provided in the U-shaped slot, and cutting mechanism supporting vertical plates 3 being provided at both ends of the U-shaped slot; the tool holder 1 comprises a lower knife sliding surface 4 and an upper knife sliding surface 5, the bending mechanism comprises a lower knife 6 and a bending auxiliary mechanism arranged on the side of the lower knife 6 away from the lower knife sliding surface 4 for pressing the metal strip 2, the bending auxiliary mechanism comprises an upper pressing block 7 and a lower pressing block 8, the metal strip 2 is provided between the upper pressing block 7 and the lower pressing block 8; the cutting mechanism comprises an upper knife 9.

[0049] Figure 1 This is a schematic diagram of the structure of the automatic bending and cutting device for the metal strip for lithium-ion battery pack provided by the utility model. Figure 2 for Figure 1 Longitudinal section view of the middle tool holder, tool and clamping block. Figure 3 for Figure 1 Plan view of the sliding surface of the middle and lower knife and the sliding surface of the upper knife, Figure 4 for Figure 1 Schematic diagram of the structure of the middle bending mechanism bending the metal strip. Figure 5 for Figure 1 Schematic diagram of the structure of the middle cutting mechanism cutting right-angle metal strip.

[0050] See also Figure 3The knife holder 1 includes two sliding surfaces, for example, a lower knife sliding surface 4 and an upper knife sliding surface 5. The sliding surfaces can make the knife move in the vertical direction. For example, the knife originally moves in the up-down direction, and its motion curve may not be a vertical straight line. With the sliding surface, the knife can move up and down along the sliding surface, and its motion curve is approximately or is a vertical straight line. Then, the metal strip 2 can be bent into a right-angle metal strip 2 first, and then the edge of the cut right-angle metal strip 2 is made smoother. The knife (such as the lower knife 6 and the upper knife 9) provided by the utility model is thicker. When the knife is not sharp, it can be sharpened and used multiple times without having to be replaced immediately, saving the cost of bending and cutting the metal strip 2.

[0051] The metal strip 2 may be a nickel strip.

[0052] The cutting mechanism supporting vertical plate 3 can provide supporting force for the cutting mechanism.

[0053] Combination Figure 2 and Figure 4 The lower knife sliding surface 4 can make the movement curve of the lower knife 6 when it moves upward to bend the metal strip 2 a straight line, that is, the lower knife 6 moves upward in the vertical direction, that is, the lower knife 6 goes straight up and down, so that the originally straight metal strip 2 is bent at one end close to the lower knife 6.

[0054] For example, when the lower knife 6 moves upward along the lower knife sliding surface 4, the pressing block located on one side of the lower knife 6 can press the metal strip 2, so that the metal strip 2 can be bent into a right-angle metal strip 2. Exemplarily, the pressing block can include an upper pressing block 7 and a lower pressing block 8.

[0055] Combination Figure 2 and Figure 5 The upper knife sliding surface 5 can make the movement curve of the upper knife 9 when moving downward a straight line, that is, the upper knife 9 moves downward in the vertical direction, that is, the upper knife 9 moves straight up and down, so that the right-angle metal strip 2 can be cut separately from the whole roll of metal strip 2, and the edge of the cut right-angle metal strip 2 is smoother.

[0056] When actually operating the device of the utility model, the PLC (programmable logic controller, i.e., the slave computer) can be controlled through the text display (i.e., the host computer), and then the bending and cutting equipment provided by the utility model can be controlled through the PLC to complete the bending and cutting of the metal strip 2.

[0057] The beneficial effects are inferred as follows:

[0058] In the prior art, the equipment for cutting right-angle metal strips has a complex structure and low cutting efficiency and cannot be widely used.

[0059] In the technical solution of the present utility model, it is precisely because the lower knife 6 of the bending mechanism moves upward along the lower knife sliding surface 4 of the knife holder 1 to bend the metal strip 2, and at the same time, the upper clamping block 7 and the lower clamping block 8 of the bending mechanism cooperate, so that the metal strip 2 can be tightly pressed between the upper clamping block 7 and the lower clamping block 8, thereby achieving the bending of the metal strip 2 and obtaining the right-angle metal strip 2. Further, the upper knife 9 of the cutting mechanism slides downward along the upper knife sliding surface 5 of the knife holder 1, thereby achieving the cutting of the right-angle metal strip 2.

[0060] It can be seen that the automatic bending and cutting device of the metal strip 2 in the utility model has a simple structure. By adopting the automatic bending and cutting device of the utility model, the bending and cutting efficiency of the metal strip 2 can be greatly improved.

[0061] In the above-mentioned embodiment, an automatic bending and cutting device for a metal strip 2 for a lithium-ion battery pack is introduced. In another embodiment of the utility model, other components of the bending mechanism are introduced.

[0062] Figure 6 for Figure 1 See the schematic diagram of the bending mechanism and cutting mechanism in the figure. Figure 6 The bending mechanism also includes a bending cylinder 10 arranged below the lower knife 6, a bending cylinder base 11 arranged below the bending cylinder 10 and fixedly connected to the bending cylinder 10, the lower knife 6 and the bending cylinder 10 are fixedly connected via a lower knife fixing block 12, and the lower knife fixing block 12 and the bending cylinder 10 are fixedly connected via a pair of screws and nuts 13.

[0063] The bending cylinder base 11 is used to support the bending cylinder 10 , and the bending cylinder 10 can drive the lower knife 6 to move upward along the lower knife sliding surface 4 to achieve bending of the metal strip 2 .

[0064] In the above-mentioned embodiment, other components of the bending mechanism are introduced. In another embodiment of the utility model, other components of the bending auxiliary mechanism are introduced.

[0065] Continue to see Figure 6 The bending auxiliary mechanism also includes a bending auxiliary cylinder 14 disposed above the upper clamping block 7 and fixedly connected to the upper clamping block 7, and a bending auxiliary cylinder base 15 disposed above the bending auxiliary cylinder 14 and fixedly connected to the bending auxiliary cylinder 14. Exemplarily, the fixed connection between the upper clamping block 7 and the bending auxiliary cylinder 14 can be a screw connection.

[0066] The bending auxiliary cylinder 14 can move downward to apply downward pressure to the upper pressing block 7, so that the metal strip 2 is tightly pressed between the upper pressing block 7 and the lower pressing block 8, thereby bending the metal strip 2 to obtain a right-angle metal strip 2. Exemplarily, the bending auxiliary cylinder 14 can be a three-rod cylinder, and the bending auxiliary cylinder base 15 can be a three-rod cylinder base.

[0067] In the above-mentioned embodiment, other components of the bending auxiliary mechanism are introduced. In another embodiment of the utility model, other components of the cutting mechanism are introduced.

[0068] Continue to see Figure 6 The cutting mechanism also includes a cutting cylinder 16 arranged above the upper knife 9, a cutting cylinder base 17 arranged above the cutting cylinder 16 and fixedly connected to the cutting cylinder 16, the upper knife 9 and the cutting cylinder 16 are fixedly connected by an upper knife fixing block 18, and the upper knife fixing block 18 and the cutting cylinder 16 are fixedly connected by a pair of bolts and nuts 19.

[0069] The cutting cylinder base 17 is used to support the cutting cylinder 16 , and the cutting cylinder 16 can drive the upper knife 9 to move downward along the upper knife sliding surface 5 to achieve cutting of the right-angle metal strip 2 .

[0070] In the above-mentioned embodiment, other components of the cutting mechanism are introduced. In another embodiment of the present invention, a reinforcement component of the upper knife 9 is introduced.

[0071] Continue to see Figure 6 The cutting mechanism further comprises a pair of upper knife pressing blocks 20 symmetrically arranged at both ends of the upper knife 9 away from the upper knife sliding surface 5 along the knife direction.

[0072] The upper knife 9 can move downward along the upper knife sliding surface 5 under the drive of the cutting cylinder 16, and the upper knife pressing block 20 can press the upper knife 9 tightly against the surface of the upper knife sliding surface 5, so that the upper knife 9 can move vertically downward close to the upper knife sliding surface 5, that is, it is ensured that the upper knife 9 moves downward in the vertical direction.

[0073] In the above-mentioned embodiment, a reinforcement assembly of the upper blade 9 is introduced. In another embodiment of the present utility model, a structure is introduced in which the surface of the upper pressing block 7 makes the bending angle of the metal strip 2 a right angle.

[0074] Continue to see Figure 6 There is a gap between the lower knife 6 and the upper pressing block 7 that is adapted to the thickness of the metal strip 2 , and a groove 21 is formed on a surface of the upper pressing block 7 close to the lower knife 6 .

[0075] The gap can allow the metal strip 2 to have space for storage after being bent upwards, and for example, the gap can be 0.2 mm. Normally, when the metal strip 2 is bent, the lower knife 6 moves downwards, and the bent metal strip 2 will rebound outwards.

[0076] If a groove 21 is provided on the inner surface of the upper clamping block 7, during the process of bending the metal strip 2, the metal strip 2 can be tilted toward the inside of the groove 21 (i.e., the angle between the metal strip 2 and the horizontal plane in the tilting direction is an acute angle). After the metal strip 2 is bent, the lower knife 6 moves downward. Due to the existence of the groove 21, the bent metal strip 2 rebounds outward, and the metal strip 2 does not tilt inward or outward at this time (i.e., the angle between the metal strip 2 and the horizontal plane is a right angle), thereby obtaining a right-angled metal strip 2.

[0077] In the above-mentioned embodiment, a structure is introduced in which the surface of the upper pressing block 7 makes the bending angle of the metal strip 2 a right angle. In another embodiment of the utility model, a feeding mechanism for conveying the metal strip 2 to the bending mechanism is introduced.

[0078] Figure 7 for Figure 1 For the structural diagram of the feeding mechanism, see Figure 7 The feeding mechanism includes a driving mechanism, a transmission mechanism and a synchronous belt 22 that makes the driving mechanism and the transmission mechanism rotate synchronously; the driving mechanism includes a driving motor 23 and a motor pulley 24 driven by the driving motor 23, and the transmission mechanism includes an active mechanism and a driven mechanism; the active mechanism includes a main pulley 25, a driving gear 26 and a driving wheel 27 for connecting the main pulley 25 and the driving gear 26, the driven mechanism includes a driven wheel 28, a driven gear 29 and a pair of driven wheel support frames 30 arranged at both ends of the driven wheel 28 axially for supporting the driven wheel 28, and the pair of driven wheel support frames 30 are respectively provided with openings, and both ends of the driven wheel 28 are arranged in the openings, and the driving gear 26 and the driven gear 29 are meshed; the synchronous belt 22 synchronously drives the main pulley 25, the driving gear 26 and the driven gear 29 to rotate under the drive of the motor pulley 24.

[0079] In a specific implementation, the driving motor 23 can drive the motor pulley 24 to rotate, and the motor pulley 24 can drive the main pulley 25 to rotate through the synchronous belt 22, and the main pulley 25 synchronously drives the driving wheel 27 and the driving gear 26 to rotate. Since the driving gear 26 and the driven gear 29 are meshed, the driven gear 29 is also synchronously driven to rotate. A metal belt 2 is set between the driving gear 26 and the driven gear 29. When the driving gear 26 drives the driven gear 29 to rotate, the metal belt 2 is also transmitted. For example, see Figure 1 When the driven gear 29 rotates counterclockwise, the metal strip 2 can be transmitted to the bending mechanism, so that the bending mechanism bends the metal strip 2.

[0080] In the above-mentioned embodiment, a feeding mechanism for conveying the metal strip 2 to the bending mechanism is introduced. In another embodiment of the utility model, a limiting mechanism for conveying the metal strip 2 is introduced, so that the metal strip 2 can be conveyed accurately in the conveying direction.

[0081] Continue to see Figure 7 , and also includes a limiting mechanism arranged below the driven wheel 28 for limiting the transmission direction of the metal belt 2. The limiting mechanism includes a pair of limiting plates 31 arranged below the driven wheel 28, and a cover plate 32 arranged below the limiting plate 31 for supporting the limiting plate 31.

[0082] The limiting plate 31 can make the orthographic projection of the metal belt 2 in the conveying direction fall on the limiting plate 31 , that is, the orthographic projection coincides with the limiting plate 31 , thereby completing the precise conveyance of the metal belt 2 .

[0083] In the above-mentioned embodiment, a limiting mechanism for conveying the metal belt 2 is introduced, so that the metal belt 2 can be conveyed accurately in the conveying direction. In another embodiment of the utility model, a supporting mechanism for the bending mechanism and the cutting mechanism is introduced.

[0084] Figure 8 for Figure 1 Schematic diagram of the structure of the middle support mechanism, see Figure 8 The supporting mechanism includes a bending and cutting mechanism supporting frame 33 arranged below the cover plate 32 , and a material supporting frame 34 arranged above the bending and cutting mechanism supporting frame 33 for supporting the metal strip 2 .

[0085] In the above-mentioned embodiment, the support mechanism of the bending mechanism and the cutting mechanism is introduced. In another embodiment of the utility model, a component for preventing the metal belt 2 from slipping during the transmission process is introduced.

[0086] For example, rubber matching the driving wheel 27 and the driven wheel 28 is attached to the surfaces of the driving wheel 27 and the driven wheel 28, and a pair of springs is placed in a pair of openings.

[0087] The rubber can prevent the metal belt 2 between the driving gear 26 and the driven gear 29 from slipping during the transmission process, so that the metal belt 2 cannot be normally transmitted, resulting in inaccurate bending length and inaccurate cutting length of the metal belt 2.

[0088] The above is only a preferred embodiment of the present invention and does not constitute any limitation to the present invention. Any simple modification, change and equivalent structural change made to the above embodiments according to the technical essence of the present invention shall still fall within the protection scope of the technical solution of the present invention.

Claims

1. An automatic bending and cutting device for metal strips for lithium-ion battery packs, characterized in that: It comprises a tool holder (1) arranged at the bottom, an opening is provided on the surface of the tool holder (1), a bending mechanism for the metal strip (2) is arranged in the opening, a U-shaped slot is provided above the tool holder (1), a cutting mechanism for the metal strip (2) is arranged in the U-shaped slot, and vertical plates (3) supporting the cutting mechanism are arranged at both ends of the U-shaped slot; The knife holder (1) comprises a lower knife sliding surface (4) and an upper knife sliding surface (5), the bending mechanism comprises a lower knife (6) and a bending auxiliary mechanism arranged on the side of the lower knife (6) away from the lower knife sliding surface (4) for pressing the metal strip (2), the bending auxiliary mechanism comprises an upper pressing block (7) and a lower pressing block (8), and the metal strip (2) is arranged between the upper pressing block (7) and the lower pressing block (8); The cutting mechanism comprises an upper knife (9).

2. The automatic bending and cutting device for metal strips for lithium-ion battery packs according to claim 1, characterized in that: The bending mechanism further comprises a bending cylinder (10) arranged below the lower knife (6), a bending cylinder base (11) arranged below the bending cylinder (10) and fixedly connected to the bending cylinder (10), the lower knife (6) and the bending cylinder (10) being fixedly connected via a lower knife fixing block (12), and the lower knife fixing block (12) and the bending cylinder (10) being fixedly connected via a pair of screws and nuts (13).

3. The automatic bending and cutting equipment for metal strips for lithium-ion battery packs according to claim 1 or claim 2, characterized in that: The bending auxiliary mechanism also includes a bending auxiliary cylinder (14) arranged above the upper pressing block (7) and fixedly connected to the upper pressing block (7), and a bending auxiliary cylinder base (15) arranged above the bending auxiliary cylinder (14) and fixedly connected to the bending auxiliary cylinder (14).

4. The automatic bending and cutting device for metal strips for lithium-ion battery packs according to claim 1, characterized in that: The cutting mechanism further comprises a cutting cylinder (16) arranged above the upper knife (9), a cutting cylinder base (17) arranged above the cutting cylinder (16) and fixedly connected to the cutting cylinder (16), the upper knife (9) and the cutting cylinder (16) being fixedly connected via an upper knife fixing block (18), and the upper knife fixing block (18) and the cutting cylinder (16) being fixedly connected via a pair of bolts and nuts (19).

5. The automatic bending and cutting device for metal strips for lithium-ion battery packs according to claim 1, characterized in that: The cutting mechanism further comprises a pair of upper knife pressing blocks (20) symmetrically arranged at both ends of the upper knife (9) on a side away from the upper knife sliding surface (5) along the knife direction.

6. The automatic bending and cutting device for a metal strip for a lithium-ion battery pack according to claim 1, characterized in that: There is a gap between the lower knife (6) and the upper pressing block (7) that matches the thickness of the metal strip (2), and a groove (21) is formed on a surface of the upper pressing block (7) close to the lower knife (6).

7. The automatic bending and cutting equipment for metal strips for lithium-ion battery packs according to claim 1, characterized in that: It also includes a feeding mechanism arranged on one side of the bending mechanism for conveying the metal strip (2) to the bending mechanism, the feeding mechanism including a driving mechanism, a transmission mechanism and a synchronous belt (22) for causing the driving mechanism and the transmission mechanism to rotate synchronously; The driving mechanism comprises a driving motor (23) and a motor pulley (24) driven to rotate by the driving motor (23); the transmission mechanism comprises a driving mechanism and a driven mechanism; the driving mechanism comprises a main pulley (25), a driving gear (26) and a driving wheel (27) for connecting the main pulley (25) and the driving gear (26); the driven mechanism comprises a driven wheel (28), a driven gear (29) and a pair of driven wheel support frames (30) arranged at two axial ends of the driven wheel (28) for supporting the driven wheel (28); openings are respectively arranged on the pair of driven wheel support frames (30); two ends of the driven wheel (28) are arranged in the openings; the driving gear (26) and the driven gear (29) are meshed; The synchronous belt (22) is driven by the motor pulley (24) to synchronously drive the main pulley (25), the driving gear (26) and the driven gear (29) to rotate.

8. The automatic bending and cutting device for metal strips for lithium-ion battery packs according to claim 7, characterized in that: It also includes a limiting mechanism arranged below the driven wheel (28) for limiting the transmission direction of the metal belt (2), the limiting mechanism including a pair of limiting plates (31) arranged below the driven wheel (28), and a cover plate (32) arranged below the limiting plates (31) for supporting the limiting plates (31).

9. The automatic bending and cutting device for metal strips for lithium-ion battery packs according to claim 8, characterized in that: It also comprises a support mechanism, which comprises a bending and cutting mechanism support frame (33) arranged below the cover plate (32), and a material support frame (34) arranged above the bending and cutting mechanism support frame (33) for supporting the metal strip (2).

10. The automatic bending and cutting equipment for metal strips for lithium-ion battery packs according to claim 7, characterized in that: The surfaces of the driving wheel (27) and the driven wheel (28) are provided with rubber adapted to the driving wheel (27) and the driven wheel (28), and a pair of springs are placed in a pair of openings.

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