A fully automatic coating machine for square power batteries

Abstract

The present invention relates to the technical field of battery coating machines, and in particular to a fully automatic coating machine for square power batteries, comprising a pushing mechanism, a reeling mechanism and a conveyor belt mechanism; further comprising a coating frame, two large roller groups, two side folding assemblies and two vertical rollers, wherein the coating frame is installed between the reeling mechanism and the conveyor belt mechanism, the two large roller groups are used to roll the PET films on the upper and lower end surfaces of the square power battery, the two side folding assemblies are respectively installed on the left and right sides of the coating frame, the two side folding assemblies are respectively located on the left and right sides of the two large roller groups, the two side folding assemblies move up and down to fold and roll the PET films on the left and right side walls of the square power battery, the two vertical rollers are respectively installed on the left and right sides of the coating frame for relative vertical rotation, and the two vertical rollers are respectively located behind the two side folding assemblies; the highly integrated coating station is adopted to realize fully automatic full-surface coating and folding, with a simple structure and improved work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of battery coating machines, and in particular to a fully automatic coating machine for square power batteries. Background Art

[0002] Prismatic power batteries require PET film to be adhered to the surface of the battery casing to protect it and prevent short circuits between cells. Several prior art coating machines for prismatic power batteries have been proposed, including a coating device for prismatic aluminum-cased batteries, as described in Chinese Utility Model Patent Publication No. CN209709101U. This coating device is used to coat the bottom and two large side surfaces of the battery. Combined with a side cutting and folding device for a prismatic power battery coating machine, as described in Chinese Utility Model Patent Publication No. CN216435964U, this completes a fully automatic coating machine capable of coating and folding prismatic power batteries. This allows for automatic coating of the battery, while also aligning the cuts and folds of the blue film, preventing overlapping, non-adhesive areas on the blue film.

[0003] However, the fully automatic coating machine of the above combination sets the coating and folding separately, and has a low degree of integration. The square power batteries need to go through multiple stations before the coating is completed, and the square power batteries need to be transferred multiple times between multiple conveyor lines, resulting in the need to set up multiple transfer robots for the equipment, which has a complex structure and is not conducive to further improving work efficiency. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a fully automatic film wrapping machine for square power batteries that adopts a highly integrated film wrapping station to achieve fully automatic full-surface film wrapping and folding, has a simple structure, and improves work efficiency.

[0005] The present invention relates to a fully automatic film coating machine for square power batteries, comprising a pushing mechanism, a reeling mechanism and a conveyor belt mechanism, wherein the reeling mechanism is used to load and convey PET film, the pushing mechanism is used to push the square power battery to move, and the conveyor belt mechanism is used to convey the coated square power battery backward; the machine also comprises a film coating frame, two large roller groups, two side folding components and two vertical rollers, wherein the film coating frame is installed between the reeling mechanism and the conveyor belt mechanism, the two large roller groups are respectively installed at the upper and lower parts of the film coating frame, the two large roller groups are used to roll the PET film on the upper and lower end surfaces of the square power battery, and the two side folding components are respectively installed at the film coating frame. On the left and right sides of the frame, the two side folding assemblies are respectively located on the left and right sides of the two large roller groups. The two side folding assemblies move up and down to fold and roll the PET film on the left and right side walls of the square power battery. The two vertical rollers are respectively installed on the left and right sides of the film wrapping frame for relative vertical rotation. The two vertical rollers are respectively located behind the two side folding assemblies. When working, the unwinding mechanism unfolds the PET film downward to a certain length and then cuts it, so that the cut PET film is located in front of the two large roller groups. The pushing mechanism pushes the square power battery between the two large roller groups so that the bottom surface of the square power battery presses against the middle of the PET film. The PET film is then fed between two large roller groups, so that the upper and lower parts of the PET film are respectively rolled and pressed against the upper and lower end surfaces of the square power battery by the two large roller groups. The pushing mechanism continues to push the square power battery to the two side folding assemblies. The two side folding assemblies fold the left and right edges of the PET film respectively and roll them against the left and right side walls of the square power battery. The pushing mechanism continues to push the square power battery backward through the two vertical rollers. The two vertical rollers fold the PET film on both sides of the bottom of the square power battery and roll them against the left and right side walls of the square power battery, thus realizing fully automatic film packaging of the square power battery. The feeding mechanism continues to move to push the coated square power battery out of the two large roller groups and two vertical rollers, and places the square power battery on the conveyor belt mechanism. The pushing mechanism contracts and resets, and the conveyor belt mechanism transports the square power battery to subsequent work. Compared with the existing technology, the bottom surface and two large side surfaces of the square power battery are fully automatically coated in one work station, and the PET film on the side and bottom is automatically folded toward the side wall of the square power battery. The integration is high and the structure is simpler. There is no need to set multiple transfer robots between multiple conveyor lines to transfer the square power batteries multiple times, which is conducive to improving work efficiency.

[0006] Preferably, the large roller group includes multiple telescopic rods, multiple springs, front rollers and multiple rear rollers, the multiple telescopic rods are installed on the left and right parts of the film wrapping frame, the multiple telescopic rods are each installed with a spring, the two ends of the front roller and the multiple rear rollers are respectively rotatably connected to the multiple telescopic rods, the front roller is located in front of the multiple rear rollers, the length of the front roller is greater than the length of the square power battery, and the length of the multiple rear rollers is less than the length of the square power battery; the two front rollers arranged above and below fully roll the PET film on the upper and lower end surfaces of the incoming square power battery to make the PET film tightly adhered, the multiple rear rollers roll and clamp the square power battery, and the elastic force of the multiple springs makes the square power battery rolled more forcefully by the two front rollers and the multiple rear rollers, and clamped more stably.

[0007] The lifting mechanism comprises a lifting mechanism, a lifting mechanism, a lifting mechanism, a lifting mechanism on the lifting platform, and a lifting mechanism of the lifting mechanism. The lifting mechanism is lifted and lowered, and a lifting mechanism is lifted and lowered. The lifting mechanism is lifted and lowered, and a lifting mechanism is lifted and lowered. The lifting mechanism is lifted and lowered

[0008] Preferably, it also includes two rotating shafts and two torsion springs. The middle parts of the two double-roller frames are hinged to the two cross frames through the two rotating shafts respectively. One end of the two torsion springs is connected to the two cross frames respectively, and the other end of the two torsion springs is connected to the two rotating shafts respectively. The two torsion springs elastically support the two double-roller frames respectively; the elastic force of the two torsion springs keeps the double-roller frame and the cross frame in elastic rotation connection, so that the two cross rollers are more compact and reliable in folding the side edges of the square power battery.

[0009] Preferably, it also includes four sliders 1 and four springs 2, the sliders 1 are installed on the upper and lower ends of the two vertical rollers respectively, the four sliders 1 are slidably installed on the left and right sides of the rear end of the film wrapping frame respectively, the outer ends of the four springs 2 are connected to the film wrapping frame, and the inner ends of the four springs 2 are connected to the four sliders 1 respectively, and the elastic force of the four springs 2 pushes the four sliders 1 toward the inside of the film wrapping frame; the elastic force of the four springs 2 pushes the four sliders 1 toward the inside of the film wrapping frame, thereby making the two vertical rollers maintain a certain pressure on the side walls of the square power battery, so that the PET film folding edges on both sides of the bottom of the square power battery are more compact and reliable.

[0010] Preferably, it also includes two inclined rods 1, two springs 3, a bottom roller 1, two inclined rods 2, two springs 4 and a bottom roller 2. The two inclined rods 1 are respectively installed on the left and right sides of the lower part of the front end of the film coating frame. The two inclined rods 1 are tilted. The middle part of the two inclined rods 1 is installed with spring 3. The two ends of the bottom roller 1 are respectively rotatably connected with the upper end of the two inclined rods 1. The two inclined rods 2 are respectively installed on the left and right sides of the upper part of the front end of the film coating frame. The two inclined rods 2 are tilted. The middle part of the two inclined rods 2 is installed with spring 4. The two ends of the bottom roller 2 The bottom rollers 1 and 2 are rotatably connected to the lower ends of the two oblique rods 2, respectively. The bottom rollers 1 and 2 are arranged horizontally between the two large roller groups. The bottom rollers 1 and 2 are located between the film wrapping frame and the unwinding mechanism. When the pushing mechanism pushes the square power battery to push the PET film, the bottom roller 1 first rolls in contact with the bottom of the square power battery. The square power battery continues to move backward, causing the two springs 3 to be compressed along the two oblique rods 1, causing the bottom roller 1 to move downward, thereby rolling and compacting the lower half of the PET film on the bottom of the square power battery. When the prismatic power battery passes over bottom roller one, the elastic force of the two springs three causes bottom roller one to rise, allowing bottom roller one to roll the lower short side to the lower edge of the electrode end surface of the prismatic power battery; similarly, bottom roller two then rolls into contact with the bottom of the prismatic power battery. The prismatic power battery continues to move backward, causing the two springs four to be compressed along the two diagonal bars two, causing bottom roller two to move upward, thereby rolling and tightening the upper half of the PET film on the bottom surface of the prismatic power battery. When the prismatic power battery passes over bottom roller two, the elastic force of the two springs four causes bottom roller two to descend, allowing bottom roller two to roll the upper short side to the upper edge of the electrode end surface of the prismatic power battery.

[0011] Preferably, it also includes a reel assembly, a lower crossbeam, an upper crossbeam, two vertical shafts, four slitting knives, two transmission wheels and a transmission belt. The upper part of the reel assembly is provided with a reel assembly for loading the PET film reel. The lower crossbeam and the upper crossbeam are both installed below the reel assembly. The middle parts of the lower crossbeam and the upper crossbeam are both provided with clamping parts for clamping the PET film. The upper ends of the two vertical shafts are rotatably connected to the upper crossbeam, and the lower ends of the two vertical shafts are rotatably connected to the lower crossbeam. The two vertical shafts are respectively located on both sides of the clamping parts of the lower crossbeam and the upper crossbeam. Two slitting knives are respectively installed on the two vertical shafts. The two slitting knives are respectively flush with the upper end face and the lower end face of the square power battery. The two transmission wheels are respectively concentrically installed at the upper ends of the two vertical shafts. , the transmission belt is mounted on two transmission wheels; the PET film reel is loaded onto the unwinding shaft assembly, and the lower end of the PET film is passed through the clamping parts of the lower beam and the upper beam in turn. The clamping parts can be a cylinder-driven plywood assembly, a roller assembly, etc., which will not be described in detail here. After the PET film is extended into place and clamped, a vertical shaft rotates under the drive of a motor, driving the two cutting knives thereon to cut the PET film. The incision is located at the bottom corner of the square power battery. At the same time, under the transmission action of the two transmission wheels and the transmission belt, another vertical shaft rotates synchronously, so that the other vertical shaft drives the two cutting knives thereon to cut the other side of the PET film, thereby realizing automatic incision on both sides of the PET film.

[0012] Preferably, it also includes a knife holder and a cutting knife, the knife holder is installed on the transmission belt, and the cutting knife is installed on the knife holder; after the four cutting knives complete the incision of the PET film, the transmission wheel drives the transmission belt to rotate continuously, driving the knife holder and the cutting knife to move in a straight line, so that the cutting knife cuts off the upper end of the PET film, thereby realizing automatic cutting of the PET film.

[0013] Preferably, it also includes multiple clamping seats, a door frame, a visual inspection mechanism, a push rod 1, a push rod 2 and a hot pressing station, multiple clamping seats are evenly installed on the conveyor belt mechanism, multiple clamping seats are used to clamp the square power batteries loaded after the package is loaded, the front end of the conveyor belt mechanism is aligned with the middle of the two large roller groups, so that the clamping seat located at the front end of the conveyor belt mechanism is in a horizontal state and is aligned with the middle of the two large roller groups, the door frame is installed at the upper front end of the frame of the conveyor belt mechanism, the visual inspection mechanism is installed on the door frame, push rod 1 and push rod 2 are installed on the rear frame of the conveyor belt mechanism, push rod 1 is used to push unqualified square power batteries out of the clamping seat, the hot pressing station is installed on the frame of the conveyor belt mechanism, the hot pressing station is located on the other side of push rod 2, the length of the hot pressing station is greater than the length of the square power battery, and a hot pressing plate assembly is arranged inside the hot pressing station; due to the front end of the conveyor belt mechanism The upper opening of the clamping seat is aligned with the middle of the two large roller groups, so that the square power battery after the coating is completed can be directly loaded into the clamping seat after being pushed out of the two large roller groups and two vertical rollers by the pushing mechanism, thereby eliminating the traditional transfer robot arm structure, simplifying the equipment and saving costs. The conveyor belt mechanism drives multiple square power batteries to move through multiple clamping seats. When the square power batteries pass through the gantry and the visual inspection mechanism, the visual inspection mechanism inspects the coating quality of the square power batteries. Push rod 1 pushes the square power battery with unqualified coating from the clamping seat, and push rod 2 pushes the square power battery with qualified coating into the hot pressing station. After the hot pressing station positions the square power battery, the hot pressing plate assembly moves to hot-press the short side of the electrode end surface of the square power battery, making the top short side of the coating more firm, thereby realizing the inspection of the square power battery and the removal of unqualified products.

[0014] Preferably, it also includes two drive motors and two cams, the two drive motors are respectively installed on the left and right parts of the door frame, and the two cams are respectively installed on the output shafts of the two drive motors; the two drive motors respectively drive the two cams to rotate inward synchronously, so that the protrusions of the two cams clamp the left and right side walls of the square power battery in the clamping seat, and the two cams continue to rotate, so that the two cams lift the square power battery out of the clamping seat, so that the clamping seat will not block the visual inspection mechanism's inspection path of the square power battery.

[0015] Compared with the prior art, the present invention has the following advantages: the bottom and two large side surfaces of the square power battery can be fully automatically coated at one workstation, and the PET films on the sides and bottom can be automatically folded toward the side walls of the square power battery. The present invention has a high degree of integration and a simpler structure. There is no need to set up multiple transfer robots between multiple conveyor lines to transfer the square power batteries multiple times, which is conducive to improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention;

[0017] Figure 2 is an axonometric schematic diagram of the present invention;

[0018] Figure 3 It is a front structural schematic diagram of the present invention;

[0019] Figure 4 It is a structural diagram of the unwinding mechanism, unwinding shaft assembly, lower crossbeam, upper crossbeam, vertical shaft, slitting knife, knife holder and cutting knife;

[0020] Figure 5 It is a structural diagram of the film wrapping frame, large surface roller group, side folding assembly and vertical roller;

[0021] Figure 6 It is a side view structural diagram of the film wrapping frame, large surface roller group, side folding assembly and vertical roller;

[0022] Figure 7 It is a structural diagram of the exploded state of the film wrapping frame, large surface roller group, side folding assembly and vertical roller;

[0023] Figure 8 It is a structural diagram of the film wrapping frame, large surface roller group and vertical roller;

[0024] Figure 9 It is a structural diagram of the side folding assembly;

[0025] Figure 10 It is a structural diagram of the conveyor belt mechanism, clamping seat, visual inspection mechanism, push rod 1, push rod 2, hot pressing station, drive motor and cam;

[0026] Figure 11 It is a schematic diagram of the square power battery packaging and folding process.

[0027] Markings in the attached figure: 1, pushing mechanism; 2, unwinding mechanism; 3, conveyor belt mechanism; 4, film wrapping frame; 5, large roller group; 6, side folding assembly; 7, vertical roller; 8, telescopic rod 1; 9, spring 1; 10, front roller; 11, rear roller; 12, slide bar; 13, slide; 14, cross frame; 15, double roller frame; 16, cross roller; 17, rotating shaft; 18, torsion spring 1; 19, slide block 1; 20, spring 2; 21, diagonal rod 1; 22, spring 3 ; 23. Bottom roller one; 24. Inclined rod two; 25. Spring four; 26. Bottom roller two; 27. Unwinding shaft assembly; 28. Lower crossbeam; 29. ​​Upper crossbeam; 30. Vertical axis; 31. Cutting knife; 32. Drive wheel; 33. Drive belt; 34. Knife holder; 35. Cutting knife; 36. Clamping seat; 37. Door frame; 38. Visual inspection mechanism; 39. Push rod one; 40. Push rod two; 41. Hot pressing station; 42. Drive motor; 43. Cam. DETAILED DESCRIPTION

[0028] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0029] Example 1, as Figures 1 to 3 、 Figures 5 to 9 、 Figure 11 As shown, a fully automatic film wrapping machine for square power batteries includes a pushing mechanism 1, a reeling mechanism 2 and a conveyor belt mechanism 3. The reeling mechanism 2 is used to load and convey the PET film, the pushing mechanism 1 is used to push the square power battery toward the reeling mechanism 2, and the conveyor belt mechanism 3 is used to convey the film-wrapped square power battery backward; it also includes a film wrapping frame 4, two large roller groups 5, two side folding components 6 and two vertical rollers 7. The film wrapping frame 4 is installed between the reeling mechanism 2 and the conveyor belt mechanism 3, and the two large roller groups 5 are respectively installed on the film wrapping frame 4. At the upper and lower parts of the film rack 4, two large roller groups 5 are used to roll the PET film on the upper and lower end surfaces of the square power battery. The two side folding assemblies 6 are respectively installed on the left and right sides of the film wrapping rack 4. The two side folding assemblies 6 are respectively located on the left and right sides of the two large roller groups 5. The two side folding assemblies 6 move up and down to fold and roll the PET film on the left and right side walls of the square power battery. The two vertical rollers 7 are respectively installed on the left and right sides of the film wrapping rack 4 for relative vertical rotation. The two vertical rollers 7 are respectively located behind the two side folding assemblies 6.

[0030] During operation, the unwinding mechanism 2 unwinds the PET film downward to a certain length and then cuts it, so that the cut PET film is located in front of the two large roller groups 5. The pushing mechanism 1 moves to push the square power battery between the two large roller groups 5, so that the bottom surface of the square power battery presses against the middle of the PET film and is then sent between the two large roller groups 5, so that the upper and lower parts of the PET film are respectively rolled and pressed against the upper and lower end surfaces of the square power battery by the two large roller groups 5. The pushing mechanism 1 continues to push the square power battery to the two side folding assemblies 6. The two side folding assemblies 6 move to fold the left and right edges of the PET film respectively and then roll them tightly against the left and right side walls of the square power battery. The pushing mechanism 1 continues to push the square power battery backward through the two vertical rollers 7. The two vertical rollers 7 press the square power battery The PET films on both sides of the bottom of the power battery are folded and rolled to the left and right side walls of the square power battery to realize fully automatic film coating of the square power battery. The pushing mechanism 1 continues to move to push the coated square power battery out of the two large roller groups 5 and the two vertical rollers 7, and places the square power battery on the conveyor belt mechanism 3. The pushing mechanism 1 contracts and resets, and the conveyor belt mechanism 3 conveys the square power battery to subsequent work. Compared with the existing technology, the bottom and two large side surfaces of the square power battery are fully automatically coated in one work station, and the PET films on the sides and bottom are automatically folded to the side walls of the square power battery. The integration is high and the structure is simpler. There is no need to set multiple transfer robots between multiple conveyor lines to transfer the square power batteries multiple times, which is conducive to improving work efficiency.

[0031] Specifically, the large roller group 5 includes multiple telescopic rods 8, multiple springs 9, front rollers 10 and multiple rear rollers 11. The multiple telescopic rods 8 are installed on the left and right parts of the film wrapping frame 4. The multiple telescopic rods 8 are all equipped with springs 9. The two ends of the front roller 10 and the multiple rear rollers 11 are rotatably connected to the multiple telescopic rods 8 respectively. The front roller 10 is located in front of the multiple rear rollers 11. The length of the front roller 10 is greater than the length of the square power battery, and the length of the multiple rear rollers 11 is less than the length of the square power battery; the side folding assembly 6 includes a slide bar 12, a slide 13, a cross frame 14, a double roller frame 15 and two cross rollers 16. The slide bar 12 is vertically installed on the left and right sides of the film wrapping frame 4. The slide bar 12 is located on the outside of the multiple rear rollers 11. The slide 13 is slidably installed on the slide bar 12, the cross frame 14 is installed on the slide 13, and the double roller frame 15 is installed on the cross frame 14. The upper end of the double roller frame 15 and The lower ends are both rotatably installed with cross rollers 16, and the two cross rollers 16 are arranged horizontally. The distance between the two cross rollers 16 is greater than the thickness of the square power battery; it also includes two rotating shafts 17 and two torsion springs 18. The middle parts of the two double-roller frames 15 are hinged to the two cross frames 14 through two rotating shafts 17 respectively. One end of the two torsion springs 18 is connected to the two cross frames 14 respectively, and the other end of the two torsion springs 18 is connected to the two rotating shafts 17 respectively. The two torsion springs 18 elastically support the two double-roller frames 15 respectively; it also includes four sliders 19 and four springs 20. The upper and lower ends of the two vertical rollers 7 are respectively installed with sliders 19. The four sliders 19 are respectively slidably installed on the left and right sides of the rear end of the film coating frame 4. The outer ends of the four springs 20 are connected to the film coating frame 4, and the inner ends of the four springs 20 are respectively connected to the four sliders 19. The elastic force of the four springs 20 pushes the four sliders 19 toward the inner side of the film coating frame 4.

[0032] The two front rollers 10 arranged up and down fully roll the PET films on the upper and lower end surfaces of the incoming square power battery to make the PET films stick tightly, and multiple rear rollers 11 roll and clamp the square power battery. The elastic force of multiple springs 9 makes the square power battery rolled by the two front rollers 10 and the multiple rear rollers 11 more powerful and more stable. When the square power battery reaches between the two side folding components 6, the slide 13 rises along the slide bar 12, and the slide 13 drives the two transverse rollers 16 to rise through the transverse frame 14 and the double roller frame 15, so that the transverse roller 16 located below folds the PET film on the side of the lower end surface of the square power battery upwards and rolls it tightly; the slide 13 descends along the slide bar 12, The slide 13 drives the two transverse rollers 16 to descend through the transverse frame 14 and the double-roller frame 15, so that the transverse roller 16 located above folds the PET film on the side of the upper end surface of the square power battery downward and rolls it tightly, thereby realizing fully automatic folding of the PET film on the side of the square power battery. The elastic force of the two torsion springs 18 keeps the double-roller frame 15 and the transverse frame 14 in elastic rotation connection, so that the two transverse rollers 16 fold the side of the square power battery more densely and reliably. The elastic force of the four springs 20 pushes the four sliders 19 toward the inner side of the film wrapping frame 4, thereby making the two vertical rollers 7 maintain a certain pressure on the side wall of the square power battery, so that the folding of the PET film on both sides of the bottom of the square power battery is more densely and reliably.

[0033] Example 2, as Figures 1 to 4 and Figure 7As shown, on the basis of Example 1, it also includes two inclined rods 1 21, two springs 3 22, a bottom roller 1 23, two inclined rods 24, two springs 4 25 and a bottom roller 2 26. The two inclined rods 1 21 are respectively mounted on the left and right sides of the lower part of the front end of the film coating frame 4, the two inclined rods 1 21 are tilted, and the middle parts of the two inclined rods 1 21 are both installed with springs 3 22. The two ends of the bottom roller 1 23 are respectively rotatably connected to the upper ends of the two inclined rods 1 21, the two inclined rods 24 are respectively mounted on the left and right sides of the upper part of the front end of the film coating frame 4, the two inclined rods 24 are tilted, and the middle parts of the two inclined rods 24 are both installed with springs 4 25. The two ends of the bottom roller 2 26 are respectively rotatably connected to the lower ends of the two inclined rods 24, and the bottom roller 1 23 and the bottom roller 2 26 are horizontally arranged between the two large roller groups 5; it also includes a reel assembly 27, a lower crossbeam 28, an upper crossbeam 29, two vertical shafts 30, four incisions The upper part of the unwinding mechanism 2 is provided with an unwinding shaft assembly 27 for loading the PET film reel, and the lower crossbeam 28 and the upper crossbeam 29 are both installed below the unwinding shaft assembly 27. The middle parts of the lower crossbeam 28 and the upper crossbeam 29 are provided with clamping parts for clamping the PET film. The upper ends of the two vertical shafts 30 are rotatably connected to the upper crossbeam 29, and the lower ends of the two vertical shafts 30 are rotatably connected to the lower crossbeam 28. The two vertical shafts 30 are respectively located on both sides of the clamping parts of the lower crossbeam 28 and the upper crossbeam 29. Two cutting knives 31 are installed on the two vertical shafts 30. The two cutting knives 31 are respectively flush with the upper end face and the lower end face of the square power battery. The two driving wheels 32 are respectively concentrically installed on the upper ends of the two vertical shafts 30, and the driving belt 33 is sleeved on the two driving wheels 32; it also includes a knife holder 34 and a cutting knife 35, the knife holder 34 is installed on the driving belt 33, and the cutting knife 35 is installed on the knife holder 34.

[0034] The PET film reel is loaded onto the unwinding shaft assembly 27, and the lower end of the PET film is passed through the clamping parts of the lower crossbeam 28 and the upper crossbeam 29 in sequence. The clamping parts can be a cylinder-driven clamping plate assembly, a roller assembly, etc., which will not be described in detail here. After the PET film is extended into place and clamped, a vertical shaft 30 is driven by a motor to rotate, driving the two cutting knives 31 thereon to cut the PET film. The incision is located at the bottom corner of the square power battery. At the same time, under the transmission action of the two transmission wheels 32 and the transmission belt 33, another vertical shaft 30 rotates synchronously, so that the other vertical shaft 30 drives The two slitting knives 31 thereon cut the other side of the PET film to realize automatic cutting of both sides of the PET film. After the four slitting knives 31 complete the cutting of the PET film, the transmission wheel 32 drives the transmission belt 33 to rotate continuously, driving the knife holder 34 and the cutting knife 35 to move in a straight line, so that the cutting knife 35 cuts off the upper end of the PET film to realize automatic cutting of the PET film. The bottom roller 1 23 and the bottom roller 2 26 are located between the film wrapping frame 4 and the unwinding mechanism 2. When the pushing mechanism 1 pushes the square power battery to push the PET film, the bottom roller 1 23 first rolls in contact with the bottom of the square power battery. The square power battery continues to move backward, so that the two springs three 22 are compressed along the two oblique rods one 21, so that the bottom roller one 23 moves downward, thereby rolling the lower half of the PET film on the bottom of the square power battery tightly. When the square power battery passes over the bottom roller one 23, the elastic force of the two springs three 22 causes the bottom roller one 23 to rise, so that the bottom roller one 23 rolls the lower short side to the lower edge of the electrode end surface of the square power battery; similarly, the bottom roller two 26 then rolls with the bottom of the square power battery, and the square power battery continues to move backward, so that the two springs four 25 The two oblique rods 24 are compressed, causing the bottom roller 26 to move upward, thereby rolling the upper half of the bottom PET film of the square power battery tightly. When the square power battery passes over the bottom roller 26, the elastic force of the two springs 25 causes the bottom roller 26 to descend, causing the bottom roller 26 to roll the upper short side to the upper edge of the electrode end surface of the square power battery; when the square power battery passes over the two vertical rollers 7, the elastic force of the four springs 20 causes the two vertical rollers 7 to move inward, causing the two vertical rollers 7 to roll the left and right short sides to the left and right edges of the electrode end surface of the square power battery.

[0035] Example 3, as Figures 1 to 3 and Figure 10As shown, on the basis of Example 1, it also includes multiple clamping seats 36, a door frame 37, a visual inspection mechanism 38, a push rod 1 39, a push rod 2 40 and a hot pressing station 41, multiple clamping seats 36 are evenly installed on the conveyor belt mechanism 3, multiple clamping seats 36 are used to clamp the square power batteries after loading and coating, the front end of the conveyor belt mechanism 3 is aligned with the middle of the two large roller groups 5, so that the clamping seat 36 located at the front end of the conveyor belt mechanism 3 in a horizontal state is aligned with the middle of the two large roller groups 5, the door frame 37 is installed at the upper front end of the frame of the conveyor belt mechanism 3, the door frame 37 A visual inspection mechanism 38 is installed on it, and push rod 1 39 and push rod 2 40 are installed on the rear frame of the conveyor belt mechanism 3. Push rod 1 39 is used to push unqualified square power batteries out of the clamping seat 36. The hot pressing station 41 is installed on the frame of the conveyor belt mechanism 3. The hot pressing station 41 is located on the other side of push rod 2 40. The length of the hot pressing station 41 is greater than the length of the square power battery; it also includes two drive motors 42 and two cams 43. The two drive motors 42 are respectively installed on the left and right parts of the door frame 37, and the two cams 43 are respectively installed on the output shafts of the two drive motors 42.

[0036] Since the upper opening of the clamping seat 36 at the front end of the conveyor belt mechanism 3 is aligned with the middle of the two large roller groups 5, the square power battery after the film is completed can be directly loaded into the clamping seat 36 after being pushed out by the pushing mechanism 1 by the two large roller groups 5 and the two vertical rollers 7, thereby eliminating the traditional transfer robot arm structure, simplifying the equipment and saving costs. The conveyor belt mechanism 3 drives multiple square power batteries to move through multiple clamping seats 36. When the square power batteries pass through the door frame 37 and the visual inspection mechanism 38, the two drive motors 42 respectively drive the two cams 43 to rotate inward synchronously, so that the protrusions of the two cams 43 clamp the left and right side walls of the square power battery in the clamping seat 36. The two cams 43 continue to rotate, so that the two cams 43 lift the square power battery out of the clamping seat 36, so that the clamping seat 36 will not block the inspection path of the visual inspection mechanism 38 for the square power battery. The visual inspection mechanism 38 inspects the quality of the coating of the square power battery. For details, refer to CN202122177375.3 A rapid detection mechanism for visual defects of the square power battery shell. Push rod 1 39 pushes the square power battery with unqualified coating out of the clamping seat 36, and push rod 2 40 pushes the square power battery with qualified coating into the hot pressing station 41. The hot pressing station 41 and the hot pressing plate assembly are both existing technologies and will not be described here. After the hot pressing station 41 positions the square power battery, the hot pressing plate assembly moves to hot-press the short side of the electrode end surface of the square power battery, making the top short side of the coating more firm, making the coating more firm, and realizing the inspection of the square power battery and the removal of unqualified products.

[0037] like Figures 1 to 11As shown, a fully automatic film coating machine for square power batteries of the present invention, when working, first unwinds the reel assembly 27 to unfold the PET film downward to a certain length, and then cuts it through four incision knives 31, and cuts the upper end of the PET film through the cutting knife 35, so that the cut PET film is located in front of the two front rollers 10, and the pushing mechanism 1 moves to push the square power battery between the two front rollers 10, so that the bottom surface of the square power battery presses against the middle of the PET film and is then sent between the two front rollers 10 and multiple rear rollers 11, and then the two front rollers 10 roll and clamp the square power battery, and the pushing mechanism 1 continues to push the square power battery to the two side folding assemblies 6, and the two slides 13 rise and fall synchronously, so that the four transverse rollers 16 fold the left and right edges of the PET film respectively and roll it to the left and right side walls of the square power battery, and the pushing mechanism 1 continues to push the square power battery backward through the two vertical rollers 7, and the two vertical rollers 7 fold the square power battery on both sides of the bottom After the PET film is folded, it is rolled and pressed against the left and right side walls of the square power battery to realize fully automatic film coating of the square power battery. Then the pushing mechanism 1 continues to move to push the coated square power battery out of the two large roller groups 5 and the two vertical rollers 7 and then directly load it into the clamping seat 36. The conveyor belt mechanism 3 drives multiple square power batteries to move through multiple clamping seats 36. When the square power battery passes through the door frame 37 and the visual inspection mechanism 38, the visual inspection mechanism 38 inspects the film coating quality of the square power battery. Push rod 1 39 pushes the square power battery with unqualified film coating out of the clamping seat 36, and push rod 2 40 pushes the square power battery with qualified film coating into the hot pressing station 41. After the hot pressing station 41 positions the square power battery, the hot pressing plate assembly moves to hot press the short side of the electrode end surface of the square power battery, making the top short side of the film coating more firm. Finally, the square power battery in the hot pressing station 41 is pushed out by the subsequent square power battery to complete the unloading.

[0038] The main functions achieved by the present invention are:

[0039] 1. The bottom and two large sides of the square power battery are fully automatically coated at one station, and the PET film on the sides and bottom is automatically folded toward the side walls of the square power battery, with high integration and simpler structure.

[0040] 2. There is no need to set up multiple transfer robots between multiple conveyor lines to transfer square power batteries multiple times, which is conducive to improving work efficiency and saving costs;

[0041] 3. Able to automatically cut and cut PET film;

[0042] 4. Able to inspect square power batteries and remove unqualified ones.

[0043] The present invention relates to a fully automatic film coating machine for square power batteries. The installation method, connection method or setting method are all common mechanical methods. As long as they can achieve their beneficial effects, they can be implemented. The present invention relates to a fully automatic film coating machine for square power batteries. The pushing mechanism 1, the unwinding mechanism 2, the conveyor belt mechanism 3, the large roller group 5, the vertical roller 7, the telescopic rod 8, the spring 9, the front roller 10, the rear roller 11, the sliding rod 12, the slide 13, the double roller frame 15, the transverse roller 16, the rotating shaft 17, the torsion spring 18, the slider 19, the spring 20, the diagonal rod One 21, spring three 22, bottom roller one 23, inclined rod two 24, spring four 25, bottom roller two 26, unwinding shaft assembly 27, vertical shaft 30, slitting knife 31, transmission wheel 32, transmission belt 33, knife holder 34, cutting knife 35, clamping seat 36, visual inspection mechanism 38, push rod one 39, push rod two 40, hot pressing station 41, drive motor 42, cam 43 are purchased on the market, and technicians in this industry only need to install and operate them according to the accompanying instruction manual, without the need for creative work by technicians in this field.

[0044] 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 modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A fully automatic film coating machine for square power batteries, comprising a material pushing mechanism (1), an unwinding mechanism (2) and a conveyor belt mechanism (3), wherein the unwinding mechanism (2) is used for loading and conveying PET film, the material pushing mechanism (1) is used for pushing square power batteries, and the conveyor belt mechanism (3) is used for conveying the coated square power batteries backward; characterized in that: It also includes a film wrapping frame (4), two large roller groups (5), two side folding components (6) and two vertical rollers (7), the film wrapping frame (4) is installed between the unwinding mechanism (2) and the conveyor belt mechanism (3), the two large roller groups (5) are respectively installed on the upper and lower parts of the film wrapping frame (4), the two large roller groups (5) are used to roll the PET film on the upper and lower end surfaces of the square power battery, the two side folding components (6) are respectively installed on the left and right sides of the film wrapping frame (4), the two side folding components (6) are respectively located on the left and right sides of the two large roller groups (5), the two side folding components (6) are used to fold and roll the PET film on the left and right side walls of the square power battery, the two vertical rollers (7) are respectively installed on the left and right sides of the film wrapping frame (4) so ​​as to rotate vertically relative to each other, and the two vertical rollers (7) are respectively located behind the two side folding components (6); The unwinding mechanism (2) further comprises an unwinding shaft assembly (27), a lower crossbeam (28), an upper crossbeam (29), two vertical shafts (30), four cutting knives (31), two transmission wheels (32) and a transmission belt (33). The upper portion of the unwinding mechanism (2) is provided with an unwinding shaft assembly (27) for loading a PET film reel. The lower crossbeam (28) and the upper crossbeam (29) are both installed below the unwinding shaft assembly (27). The middle portions of the lower crossbeam (28) and the upper crossbeam (29) are both provided with clamping components for clamping the PET film. The upper ends of the two vertical shafts (30) are provided with a plurality of The lower ends of the two vertical shafts (30) are rotatably connected to the lower crossbeam (28), and the two vertical shafts (30) are respectively located on both sides of the clamping parts of the lower crossbeam (28) and the upper crossbeam (29). Two cutting knives (31) are installed on the two vertical shafts (30), and the two cutting knives (31) are respectively flush with the upper end surface and the lower end surface of the square power battery. Two transmission wheels (32) are respectively concentrically installed on the upper ends of the two vertical shafts (30), and the transmission belt (33) is sleeved on the two transmission wheels (32); It also includes a knife holder (34) and a cutting knife (35), wherein the knife holder (34) is mounted on the transmission belt (33) and the cutting knife (35) is mounted on the knife holder (34); The two vertical shafts (30) rotate synchronously under the action of the two transmission wheels (32) and the transmission belt (33), and one vertical shaft (30) rotates under the drive of the motor, so that the two vertical shafts (30) respectively drive the two cutting knives (31) thereon to cut the PET film at four places; at the same time, the transmission wheel (32) drives the transmission belt (33) to drive the knife holder (34) and the cutting knife (35) to move linearly, so that the cutting knife (35) cuts off the upper end of the PET film.

2. A fully automatic coating machine for square power batteries according to claim 1, characterized in that: The large roller group (5) includes a plurality of telescopic rods (8), a plurality of springs (9), a front roller (10) and a plurality of rear rollers (11). The plurality of telescopic rods (8) are installed on the left and right parts of the film wrapping frame (4). The plurality of telescopic rods (8) are all installed with springs (9). The ends of the front roller (10) and the plurality of rear rollers (11) are respectively connected to the plurality of telescopic rods (8) for rotation. The front roller (10) is located in front of the plurality of rear rollers (11). The length of the front roller (10) is greater than the length of the square power battery, and the length of the plurality of rear rollers (11) is less than the length of the square power battery.

3. A fully automatic coating machine for square power batteries according to claim 2, characterized in that: The side folding assembly (6) includes a slide bar (12), a slide table (13), a cross frame (14), a double roller frame (15) and two cross rollers (16), the slide bar (12) is vertically installed on the left and right sides of the film coating frame (4), the slide bar (12) is located on the outside of the plurality of rear rollers (11), the slide table (13) is slidably installed on the slide bar (12), the cross frame (14) is installed on the slide table (13), the double roller frame (15) is installed on the cross frame (14), the upper end and the lower end of the double roller frame (15) are rotatably installed with cross rollers (16), the two cross rollers (16) are horizontally arranged, and the distance between the two cross rollers (16) is greater than the thickness of the square power battery.

4. A fully automatic coating machine for square power batteries according to claim 3, characterized in that: It also includes two rotating shafts (17) and two torsion springs (18). The middle parts of the two double roller frames (15) are hinged to the two cross frames (14) through the two rotating shafts (17). One end of the two torsion springs (18) is connected to the two cross frames (14) respectively, and the other end of the two torsion springs (18) is connected to the two rotating shafts (17). The two torsion springs (18) elastically support the two double roller frames (15).

5. The fully automatic film coating machine for square power batteries according to claim 1, characterized in that: It also includes four sliders (19) and four springs (20). The sliders (19) are installed on the upper and lower ends of the two vertical rollers (7), respectively. The four sliders (19) are slidably installed on the left and right sides of the rear end of the film coating frame (4), respectively. The outer ends of the four springs (20) are connected to the film coating frame (4), and the inner ends of the four springs (20) are connected to the four sliders (19). The elastic force of the four springs (20) pushes the four sliders (19) toward the inner side of the film coating frame (4).

6. The fully automatic film coating machine for square power batteries according to claim 1, characterized in that: It also includes two inclined rods (21), two springs (22), a bottom roller (23), two inclined rods (24), two springs (25) and a bottom roller (26). The two inclined rods (21) are respectively installed on the left and right sides of the lower part of the front end of the film coating frame (4). The two inclined rods (21) are tilted. The middle part of the two inclined rods (21) is installed with springs (22). The two ends of the bottom roller (23) are respectively connected to the upper ends of the two inclined rods (21). The two inclined rods (24) are respectively installed on the left and right sides of the upper part of the front end of the film coating frame (4). The two inclined rods (24) are tilted. The middle part of the two inclined rods (24) is installed with springs (25). The two ends of the bottom roller (26) are respectively connected to the lower ends of the two inclined rods (24). The bottom roller (23) and the bottom roller (26) are horizontally arranged between the two large roller groups (5).

7. The fully automatic film coating machine for square power batteries according to claim 1, characterized in that: It also includes a plurality of clamping seats (36), a door frame (37), a visual inspection mechanism (38), a push rod 1 (39), a push rod 2 (40) and a hot pressing station (41), wherein the plurality of clamping seats (36) are evenly installed on the conveyor belt mechanism (3), and the plurality of clamping seats (36) are used to clamp the square power batteries after the packaging is loaded, and the front end of the conveyor belt mechanism (3) is aligned with the middle of the two large roller groups (5), so that the clamping seat (36) located at the front end of the conveyor belt mechanism (3) in a horizontal state is aligned with the middle of the two large roller groups (5), and the door frame (37) The device is installed at the upper front end of the frame of the conveyor belt mechanism (3), the visual inspection mechanism (38) is installed on the door frame (37), the push rod 1 (39) and the push rod 2 (40) are installed on the rear frame of the conveyor belt mechanism (3), the push rod 1 (39) is used to push the unqualified square power battery out of the clamping seat (36), the hot pressing station (41) is installed on the frame of the conveyor belt mechanism (3), the hot pressing station (41) is located on the other side of the push rod 2 (40), the length of the hot pressing station (41) is greater than the length of the square power battery, and a hot pressing plate assembly is set inside the hot pressing station.

8. The fully automatic film coating machine for square power batteries according to claim 7, characterized in that: It also includes two drive motors (42) and two cams (43), wherein the two drive motors (42) are respectively mounted on the left and right parts of the door frame (37), and the two cams (43) are respectively mounted on the output shafts of the two drive motors (42).

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