Automatic film sticking machine

Abstract

The embodiment of the invention provides an automatic film sticking machine which is used for film sticking of a power battery module and comprises an unwinding mechanism, a film sticking mechanism and a film sticking mechanism, the film drawing mechanism is used for controlling the film drawing length; the sliding knife mechanism is used for cutting the membrane after the membrane is clamped and pulled out to a specified length by the membrane pulling mechanism; the film receiving mechanism is arranged above the film drawing mechanism and is used for receiving the bottom film after the film drawing action is finished; the film pasting clamping mechanism comprises a servo three-axis mechanism, an anti-skid clamping jaw mechanism, a distance changing mechanism, a translation telescopic mechanism and a film pressing and rolling mechanism, the anti-skid clamping jaw mechanism is matched with the servo three-axis mechanism to carry cut films, and the distance changing mechanism is matched with the anti-skid clamping jaw mechanism to adapt to the films with different lengths; the translation telescopic mechanism is matched with the anti-skid clamping jaw mechanism, and the film pressing and rolling mechanism is used for pressing the film on the power battery module. And high-precision, efficient, reliable, low-maintenance-cost and energy-saving film pasting can be realized.

Description

Technical Field

[0001] This specification relates to the technical field of power battery film lamination, and specifically to an automatic film lamination machine. Background Art

[0002] With the increasing popularity of new energy vehicles, the production of automotive power batteries is increasing year by year. Having an efficient and reliable automatic module base film laminating machine in the battery module production process can reduce the labor burden and improve production efficiency. Existing automatic laminating machines are overly complex, unstable, and have low precision, making them extremely inconvenient to use and affecting production efficiency. Summary of the Invention

[0003] In view of this, the embodiments of this specification provide an automatic film laminating machine that can achieve high-precision, high-efficiency, reliable, low-maintenance cost, and energy-saving film laminating.

[0004] The embodiments of this specification provide the following technical solutions: an automatic film laminating machine for laminating power battery modules, comprising:

[0005] An unwinding mechanism, which is used to unwind and feed the film;

[0006] A film-pulling mechanism, wherein the film-pulling mechanism is used to control the length of the film;

[0007] a sliding knife mechanism, which is used to cut the film after the film-drawing mechanism clamps and draws the film to a specified length;

[0008] a film-joining mechanism, the film-joining mechanism being arranged above the film-pulling mechanism and being used to join the base film after the film-pulling action is completed;

[0009] The film clamping mechanism includes a servo three-axis mechanism, an anti-slip clamping mechanism, a pitch-changing mechanism, a translation and telescopic mechanism, and a downward-pressing film rolling mechanism. The anti-slip clamping mechanism cooperates with the servo three-axis mechanism to transport the cut film. The pitch-changing mechanism cooperates with the anti-slip clamping mechanism to adapt to films of different lengths. The translation and telescopic mechanism cooperates with the anti-slip clamping mechanism to drive the translational movement of the anti-slip clamping mechanism. The downward-pressing film rolling mechanism is used to press the film onto the power battery module.

[0010] Preferably, the film pulling mechanism includes a clamping plate, a first servo motor, a screw and a connecting frame, the output end of the first servo motor is connected to the screw, the connecting frame and the screw are screwed, the clamping plate is installed on the connecting frame, and the clamping plate is used to clamp the diaphragm.

[0011] Preferably, the automatic film laminating machine further comprises a winding mechanism, wherein the winding mechanism comprises a winding roller, and the winding roller is used to wind up the release paper during the film drawing process.

[0012] Preferably, the automatic film laminating machine further comprises a synchronous belt, and the film-drawing mechanism and the winding mechanism are connected by the synchronous belt, so that when the film-drawing mechanism draws the film, the winding mechanism moves synchronously to wind up the release paper.

[0013] Preferably, the film joining mechanism includes a lifting part and a film joining plate, the lifting part is arranged beside the film drawing mechanism, the lifting part drives the film joining plate to move up and down, and catches the film sheet after the film drawing mechanism finishes film drawing.

[0014] Preferably, the sliding knife mechanism includes an upper film pressing plate, a lower film pressing plate, a distance adjusting mechanism and a cutting knife. The distance adjusting mechanism is connected to the upper film pressing plate and / or the lower film pressing plate to adjust the distance between the upper film pressing plate and the lower film pressing plate, thereby clamping the film, and the cutting knife cuts the film.

[0015] Preferably, the servo three-axis mechanism is a three-axis moving mechanism composed of linear modules;

[0016] And / or, the downward pressing film rolling mechanism is an elastic downward pressing mechanism.

[0017] Preferably, the automatic film laminating machine further comprises a plurality of machine heads, and the unwinding mechanism is installed on each of the plurality of machine heads.

[0018] Preferably, the automatic film laminating machine is used to affix a bottom film to a power battery module. The automatic film laminating machine also includes a flipping mechanism, which includes a flipping servo motor, a lifting mechanism, a clamping and retracting mechanism, and a clamping mechanism. The lifting mechanism is used to lift the battery module, and the clamping and retracting mechanism is used to drive the clamping mechanism to move so as to achieve the clamping of the battery module by the clamping mechanism. The flipping servo motor is used to drive the battery module to flip so that the bottom of the battery module faces upward.

[0019] Preferably, the flipping mechanism also includes a folding mechanism and a spline shaft mechanism. The folding mechanism is used to fold the long sides of the power battery after the film is applied. The flipping servo motor is connected to the clamping mechanism through the spline shaft mechanism to ensure that the bottom of the battery module remains level after being flipped 180 degrees.

[0020] Compared with the prior art, the at least one technical solution adopted in the embodiments of this specification can achieve the following beneficial effects:

[0021] The film-pulling moving mechanism of the film laminating machine adopts a three-axis moving mechanism composed of linear modules; the bottom film cutting adopts a sliding knife mechanism to ensure smooth and precise cutting and avoid burrs and deformation; it is also equipped with a film splicing mechanism to ensure the flatness of the bottom film after pulling the film; it adopts an anti-slip clamping claw and an elastic downward pressure film rolling mechanism, as well as an anti-slip clamping claw retracting mechanism, which are used in conjunction with the film laminating to ensure that the bottom film is adhered without bubbles and warping. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0023] Figure 1 This is a first-perspective structural diagram of the automatic film laminating machine provided by this application;

[0024] Figure 2 This is a first-perspective structural diagram of the automatic film laminating machine provided by this application;

[0025] Figure 3 It is a structural schematic diagram of the unwinding mechanism of the automatic film laminating machine provided by the present application;

[0026] Figure 4 This is a structural diagram of the unwinding mechanism and the rewinding mechanism of the automatic film laminating machine provided by the present application when used in conjunction with each other;

[0027] Figure 5 This is a structural diagram of the film pulling mechanism of the automatic film laminating machine provided by the present application from a first perspective;

[0028] Figure 6 This is a structural diagram of the film pulling mechanism of the automatic film laminating machine provided by the present application from a second perspective;

[0029] Figure 7 It is a structural schematic diagram of the film joining mechanism of the automatic film laminating machine provided by the present application;

[0030] Figure 8 It is a structural schematic diagram of the sliding knife mechanism of the automatic film laminating machine provided by the present application;

[0031] Figure 9 This is a schematic diagram of the three-dimensional structure of the film pulling mechanism of the automatic film laminating machine provided by the present application when clamping the film sheet;

[0032] Figure 10 This is a front view of the film pulling mechanism of the automatic film laminating machine provided by the present application when clamping the film sheet;

[0033] Figure 11 This is a structural diagram of the film pulling mechanism of the automatic film laminating machine provided by the present application when pulling out a film sheet;

[0034] Figure 12 This is a schematic diagram of the three-dimensional structure of the flip mechanism of the automatic film laminating machine provided by the present application;

[0035] Figure 13This is a front view of the flip mechanism of the automatic film laminating machine provided by the present application;

[0036] Figure 14 It is a schematic diagram of the three-dimensional structure of the film clamping mechanism of the automatic film laminating machine provided by the present application;

[0037] Figure 15 This is a front view of the film clamping mechanism of the automatic film laminating machine provided by the present application;

[0038] Figure 16 It is a structural diagram of the servo three-axis mechanism of the automatic film laminating machine provided in this application.

[0039] In the figure, 1. unwinding mechanism; 2. film pulling mechanism; 21. clamping plate; 22. first servo motor; 23. lead screw; 24. connecting frame; 3. sliding knife mechanism; 31. upper film pressing plate; 32. lower film pressing plate; 33. distance adjusting mechanism; 34. cutting knife; 4. film splicing mechanism; 41. lifting part; 42. film splicing plate; 5. film clamping mechanism; 51. servo three-axis mechanism; 52. anti-slip clamping claw mechanism; 53. distance changing mechanism; 54. translation and telescopic mechanism; 55. lower film rolling mechanism; 6. flipping mechanism; 61. flip servo motor; 62. lifting mechanism; 63. clamping and telescopic mechanism; 64. clamping mechanism; 65. folding mechanism; 7. winding mechanism; 8. film; 9. release paper; 10. battery module. DETAILED DESCRIPTION

[0040] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0041] The following describes the embodiments of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the features in the following embodiments and embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of this application.

[0042] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on this application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement an apparatus and / or practice a method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this apparatus and / or practice this method.

[0043] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The illustrations only show components related to the present application and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0044] Additionally, in the following description, specific details are provided to provide a thorough understanding of the examples. However, one skilled in the art will appreciate that the aspects described can be practiced without these specific details.

[0045] With the increasing popularity of new energy vehicles, the production of automotive power batteries is expanding year by year. In the production process of automotive power battery modules, the attachment of the module base film is a crucial step. The quality of the base film attachment directly affects the performance, safety, and service life of the battery module. Traditional manual film application is not only labor-intensive and labor-intensive, but also difficult to ensure the accuracy and consistency of the film application due to the limitations of manual operation, thus failing to meet the stringent requirements of large-scale, high-efficiency production. Therefore, the use of automated equipment to achieve accurate and efficient attachment of module base films has become an inevitable trend in the development of the industry. Owning an efficient and reliable automatic module base film application machine is crucial for improving battery module production efficiency, reducing costs, and ensuring product quality.

[0046] However, the existing automatic film laminating machines on the market present numerous problems in practical applications that urgently need to be addressed. For one thing, their structural design is overly complex, incorporating numerous unnecessary components and complicated transmission mechanisms. This not only increases the manufacturing cost and maintenance difficulty of the equipment, but also leads to poor overall structural stability. During long-term operation, problems such as loose components and wear can easily occur, leading to equipment failures and impacting the continuity and stability of production. Furthermore, the precision level of existing film laminating machines is low, unable to meet the production requirements of high-precision film laminating. During the film laminating process, problems such as base film position deviation and uneven application often occur, resulting in inconsistent battery module quality and increased defective product rates, which seriously restrict the improvement of production efficiency and the optimization of product quality. Furthermore, existing equipment also has significant shortcomings in terms of operational convenience, with complex operating interfaces, cumbersome parameter settings, and high requirements for the professional skills of operators. This not only increases training costs but also reduces the flexibility and responsiveness of the production process.

[0047] The following describes the technical solutions provided by various embodiments of the present application in conjunction with the accompanying drawings.

[0048] like Figures 1-16 As shown, an automatic film laminating machine is used for laminating power battery modules, comprising:

[0049] An unwinding mechanism 1, which is used to unwind and feed the film 8;

[0050] A film-pulling mechanism 2, wherein the film-pulling mechanism 2 is used to control the length of the film;

[0051] a sliding knife mechanism 3, which is used to cut the film 8 after the film stretching mechanism 2 clamps the film 8 and stretches it to a specified length;

[0052] The film-joining mechanism 4 is arranged above the film-drawing mechanism 2 and is used to join the bottom film after the film-drawing action is completed;

[0053] The film clamping mechanism 5 includes a servo three-axis mechanism 51, an anti-slip clamping mechanism 52, a pitch-changing mechanism 53, a translation and telescopic mechanism 54 and a downward pressure film rolling mechanism 55. The anti-slip clamping mechanism 52 cooperates with the servo three-axis mechanism 51 to transport the cut film 8. The pitch-changing mechanism 53 cooperates with the anti-slip clamping mechanism 52 to adapt to film sheets 8 of different lengths. The translation and telescopic mechanism 54 cooperates with the anti-slip clamping mechanism 52 to drive the anti-slip clamping mechanism 52 to move translationally. The downward pressure film rolling mechanism 55 is used to press the film 8 onto the power battery module 10.

[0054] The unwinding mechanism 1 is primarily used to unwind and feed the film 8. The film roll is manually loaded onto the head drum. As subsequent film drawing and other operations proceed, the film roll rotates on the drum, achieving continuous unwinding and feeding of the film 8. This provides film 8 material for the subsequent film laminating process, providing a stable supply of film 8 throughout the entire film laminating process. This is the basic starting point for the film laminating operation and ensures production continuity.

[0055] The film-pulling mechanism 2 is used to control the length of the film. Its front section is a film clamping mechanism. The claws are anti-slip and can stably clamp the bottom film. The moving body of the film-pulling mechanism 2 is composed of a servo motor and a lead screw 23. The film-pulling mechanism 2 and the head core-free paper winding mechanism are connected by a synchronous belt. Driven by the servo motor and the linear module, the film-pulling mechanism 2 moves to realize automatic feeding of the film. At the same time, the synchronous belt drives the synchronous pulley of the winding mechanism to realize automatic separation of the bottom film centrifugal paper and the film, and can accurately control the length of the film, realize automatic feeding of the film and automatic separation of the release paper 9, and improve production efficiency. The film-pulling length is accurately controlled by the servo motor and the lead screw 23, which ensures the accuracy of the film pasting and provides a guarantee for subsequent high-quality film pasting.

[0056] The sliding knife mechanism 3 is used to cut the film sheet 8 after the film stretching mechanism 2 clamps and pulls it to the specified length. After the film stretching mechanism 2 clamps and pulls the base film to the specified length, the upper and lower film clamping mechanisms clamp the base film, and the sliding knife mechanism 3 slides the base film to cut the base film. This ensures the accuracy of the base film length after the cutter cuts, and the cutting is smooth and precise, avoiding burrs and deformation, and improving the quality of the film.

[0057] The film connecting mechanism 4 is arranged above the film pulling mechanism 2. After the film pulling action is completed, the film connecting mechanism 4 rises to connect the bottom film to ensure that the bottom film is in a flat state, thereby ensuring the stability of the film pulling and ensuring the flatness of the bottom film after film pulling, avoiding the impact of the bottom film on subsequent transportation and film pasting operations due to unevenness, and improving the stability and reliability of the entire film pasting process.

[0058] The servo three-axis mechanism 51 cooperates with the anti-slip clamp mechanism 52: the servo three-axis mechanism (X-axis, Y-axis, Z-axis) drives the anti-slip clamp mechanism 52 to move. The servo three-axis mechanism 51 first translates the anti-slip clamp mechanism 52 to above the film splicing mechanism 4. The anti-slip clamp mechanism 52 opens, the Z axis descends, and the anti-slip clamp mechanism 52 clamps the four corners of the base film. Then the Z axis rises, and the servo three-axis mechanism 51 drives the anti-slip clamp mechanism 52 to the working position above the module.

[0059] The variable pitch mechanism 53 cooperates with the anti-slip clamping claw mechanism 52: the anti-slip clamping claw mechanism 52 is equipped with a servo motor variable pitch mechanism 53, which can realize the translational movement and extension of the clamping claw, thereby adapting to base films of different lengths and achieving compatibility.

[0060] The translation and retracting mechanism 54 cooperates with the anti-slip clamping mechanism 52: the two sides of the anti-slip clamping mechanism 52 are respectively equipped with a translation driving mechanism. When the three-axis driven film clamping mechanism 5 moves the bottom film to the top of the bottom of the module, the translation driving mechanism retracts the clamping mechanism inward, causing the middle of the bottom film to bend naturally, allowing the bottom film to contact the bottom of the module.

[0061] The film rolling mechanism 55 works as follows: The roller of the film rolling mechanism 55 in the middle initial position presses the bottom film. The film rolling mechanism 55 moves forward along the length of the bottom film, rolling the front end of the bottom film to the bottom of the module. When it reaches the end of the front end, the front clamping mechanism releases and retreats, and the film rolling mechanism 55 continues to roll the rear end of the film to the bottom of the module. The film rolling mechanism 55 continues to move backward, rolling the rear end of the bottom film to the bottom of the module. When it reaches the end of the rear end, the rear clamping mechanism releases and retreats, and the film rolling mechanism 55 continues to roll the rear end of the film to the bottom of the module.

[0062] The downward pressing film rolling mechanism 55 has a certain elasticity and allows the bottom film to contact slowly from one end, so that the bottom film can fully contact the bottom of the module during the film rolling process.

[0063] like Figure 1-Figure 2 and Figure 5-Figure 11 As shown, in some embodiments, the film-pulling mechanism 2 includes a clamping plate 21, a first servo motor 22, a lead screw 23, and a connecting frame 24. The output end of the first servo motor 22 is connected to the lead screw 23, and the connecting frame 24 and the lead screw 23 are screwed together. The clamping plate 21 is mounted on the connecting frame 24 and is used to clamp the diaphragm 8. In the film-pulling mechanism 2, the first servo motor 22 serves as a power source, and its output end is directly connected to the lead screw 23. When the first servo motor 22 is started, it rotates according to preset instructions, converting electrical energy into mechanical energy, thereby driving the lead screw 23 to rotate. The connecting frame 24 and the lead screw 23 are screwed together, and the rotation of the lead screw 23 is converted into linear motion of the connecting frame 24. This is because the threads on the lead screw 23 cooperate with the nut on the connecting frame 24. When the lead screw 23 rotates, the connecting frame 24 makes precise linear motion along the axis of the lead screw 23. The splint 21 is mounted on the connecting frame 24 and moves with the linear movement of the connecting frame 24. During the film pulling process, the claws of the splint 21 are treated with anti-slip treatment, and when the splint 21 moves to the appropriate position, it can stably clamp the bottom film. Afterwards, under the continuous drive of the first servo motor 22, the lead screw 23 drives the connecting frame 24 and the splint 21 to move backward together, pulling the film 8 out of the roll to a predetermined length. At the same time, the film pulling mechanism 2 and the head core-off paper roll mechanism are connected by a synchronous belt. When the film pulling mechanism 2 moves to realize the automatic feeding of the film, the synchronous belt will drive the synchronous pulley of the centrifugal paper mechanism to rotate, and then the centrifugal paper mechanism will rotate, realizing the automatic separation of the bottom film centrifugal paper and the film.

[0064] The first servo motor 22 has high-precision control characteristics and can accurately control the rotation angle and speed according to the preset program. The rotational motion is converted into linear motion of the connecting frame 24 through the screw 23, so that the length of the diaphragm 8 pulled by the splint 21 can be accurately controlled. This ensures that the length of the diaphragm 8 pulled out each time meets the production requirements, improves the accuracy and quality of the film, and avoids film errors or waste caused by inconsistent lengths of the diaphragm 8. The screw 23 transmission has the characteristics of high transmission accuracy and smooth movement. The screw connection between the connecting frame 24 and the screw 23 prevents the connecting frame 24 from jumping or jamming during movement, ensuring that the splint 21 clamps the diaphragm 8 and pulls it smoothly. This helps to reduce damage to the diaphragm 8 during the pulling process, improves the integrity rate of the diaphragm 8, and is also beneficial to subsequent cutting and film application operations.

[0065] like Figures 1-4 As shown, in some embodiments, the automatic film laminating machine further includes a winding mechanism 7, and the winding mechanism 7 includes a winding roller, which is used to wind up the release paper 9 during the film drawing process. During the operation of the automatic film laminating machine, the film drawing mechanism 2 starts to work, and the clamping plate 21 clamps the film 8 and pulls it back to a certain length. At this time, the winding mechanism 7 starts synchronously, and the winding roller starts to rotate under the drive of its own power device (which may be a motor, etc.), thereby realizing the automatic winding of the release paper 9 during the film drawing process, eliminating the need for manual handling of the release paper 9, reducing the manual operation links, and making the entire film laminating process more continuous and efficient.

[0066] like Figures 1-11 As shown, in some embodiments, the automatic film laminating machine further includes a synchronous belt, and the film-drawing mechanism 2 and the winding mechanism 7 are connected by the synchronous belt, so that when the film-drawing mechanism 2 draws the film, the winding mechanism 7 moves synchronously to wind up the release paper 9. During the operation of the automatic film laminating machine, the film-drawing mechanism 2 starts to perform the film-drawing operation. The first servo motor 22 of the film-drawing mechanism 2 drives the lead screw 23 to rotate, driving the connecting frame 24 and the clamping plate 21 to move backward, thereby pulling the film 8 out of the roll. At the same time, since the film-drawing mechanism 2 and the winding mechanism 7 are connected by a synchronous belt, the movement of the film-drawing mechanism 2 will be synchronously transmitted to the winding mechanism 7.

[0067] Specifically, when the film-drawing mechanism 2 moves, specific components on it (such as the pulley connected to the synchronous belt) drive the synchronous belt to move. The other end of the synchronous belt is connected to the synchronous pulley of the reeling mechanism 7. The movement of the synchronous belt causes the synchronous pulley of the reeling mechanism 7 to rotate. The synchronous pulley of the reeling mechanism 7 further drives the reeling roller, which continuously winds the release paper 9 separated during the film-drawing process onto itself. This ensures that the reeling mechanism 7 simultaneously rewinds the release paper 9 while the film-drawing mechanism 2 is drawing the film.

[0068] The film-pulling mechanism 2 and the rewinding mechanism 7 are connected by a synchronous belt, so that the actions of the two mechanisms can be precisely synchronized. While the film-pulling mechanism 2 pulls the film 8, the rewinding mechanism 7 immediately starts to rewind the release paper 9, ensuring the close coordination of each step in the production process, avoiding production interruptions or quality problems caused by asynchronous movements, and improving the coordination and smoothness of the entire film production. This synchronous motion design eliminates the need for manual control of the rewinding mechanism 7 to rewind the release paper 9, reducing manual intervention and production waiting time. The film-pulling and rewinding operations are carried out simultaneously, making the film-painting process more continuous and efficient, greatly shortening the film-painting time of a single battery module 10, thereby improving the overall production efficiency and meeting the needs of large-scale production of power batteries for new energy vehicles.

[0069] like Figure 1-Figure 2 and Figure 7 As shown, in some embodiments, the film-joining mechanism 4 includes a lifting portion 41 and a film-joining plate 42. The lifting portion 41 is arranged beside the film-drawing mechanism 2. The lifting portion 41 drives the film-joining plate 42 to move up and down, and catches the film 8 after the film-drawing mechanism 2 finishes film-drawing. When the film-drawing mechanism 2 completes pulling of the film 8 of a preset length, the control system issues a command, and the lifting portion 41 starts working (the lifting portion 41 is usually composed of a motor, a screw 23 nut pair, a guide rail and other components or a cylinder), driving the film-joining plate 42 to move upward. Driven by the lifting portion 41, the film-joining plate 42 quickly rises to a suitable position and accurately catches the front end of the film 8 after the film-drawing mechanism 2 finishes pulling. This can prevent the film 8 from sagging, shaking or accidentally falling due to loss of tension after the film is stretched, ensuring that the film 8 is in a stable state and ready for subsequent cutting, film-sticking and other operations.

[0070] After the film-drawing mechanism 2 finishes drawing the film, the front end of the film 8 loses its tension, making it prone to sagging, shaking, and other problems. The film-joining plate 42 of the film-joining mechanism 4 rises promptly to catch the film 8, providing stable support for the film 8 and preventing damage to the film 8 due to instability or affecting the accuracy of subsequent operations. This ensures the integrity and accuracy of the film 8 during the film-joining process. The film-joining mechanism 4 automatically completes the film-joining operation without the need for human intervention, reducing the time and errors of manual operation. This makes the entire film-joining process more continuous and efficient, enabling quick access to the subsequent cutting and film-joining steps, shortening the production cycle of individual products, improving overall production efficiency, and meeting the needs of large-scale production.

[0071] like Figure 1-Figure 2 and Figure 8As shown, in some embodiments, the sliding knife mechanism 3 includes an upper film pressing plate 31, a lower film pressing plate 32, a distance adjustment mechanism 33 and a cutting knife 34. The distance adjustment mechanism 33 is connected to the upper film pressing plate 31 and / or the lower film pressing plate 32 to adjust the distance between the upper film pressing plate 31 and the lower film pressing plate 32, thereby clamping the film 8, and the cutting knife 34 cuts the film 8. Before the automatic film laminating machine is operated, the sliding knife mechanism 3 is in a standby state. After the film pulling mechanism 2 pulls the film 8 to the appropriate position, the film 8 is transported to the sliding knife mechanism 3. The distance adjustment mechanism 33 is connected to the upper film pressing plate 31 and / or the lower film pressing plate 32. If the distance adjustment mechanism 33 is connected to the upper film pressing plate 31, it will drive the upper film pressing plate 31 to move downward through its own power device (such as a motor, cylinder, etc.); if it is connected to the lower film pressing plate 32, it will drive the lower film pressing plate 32 to move upward; it may also be possible to adjust the upper film pressing plate 31 and the lower film pressing plate 32 at the same time so that they are close to each other. Through this adjustment method, the distance between the upper film pressing plate 31 and the lower film pressing plate 32 gradually decreases until it can just clamp the diaphragm 8, ensuring that the diaphragm 8 remains stable during the subsequent cutting process and will not slide or shift. When the diaphragm 8 is stably clamped by the upper film pressing plate 31 and the lower film pressing plate 32, the cutting knife 34 starts to move. The cutting knife 34 is usually installed on a sliding slider, and the slider is driven to move in a straight line by a driving device such as a motor and a cylinder, so that the cutting knife 34 moves quickly along the set path to cut the clamped diaphragm 8. After cutting is completed, the cutting knife 34 returns to its initial position and waits for the next cutting instruction. After cutting is completed, the distance adjustment mechanism 33 moves in the opposite direction, so that the upper pressing plate 31 and the lower pressing plate 32 move away from each other, releasing the cut film 8 so that the film pulling mechanism 2 can continue to pull a new film 8, and the sliding knife mechanism 3 enters the next working cycle.

[0072] The distance adjustment mechanism 33 can accurately adjust the distance between the upper film pressing plate 31 and the lower film pressing plate 32 to ensure that the diaphragm 8 is stably clamped before cutting. This stable clamping state provides good cutting conditions for the cutting knife 34, so that the cutting knife 34 can accurately cut the diaphragm 8 according to the preset size and shape, greatly improving the dimensional accuracy of the diaphragm 8 and meeting the strict requirements of different products on the film size. The stable clamping of the upper film pressing plate 31 and the lower film pressing plate 32 can effectively prevent the diaphragm 8 from shaking or deforming during the cutting process, avoiding problems such as uneven cutting edges and burrs caused by the movement of the diaphragm 8. At the same time, reasonable clamping force can also reduce the extrusion damage to the diaphragm 8 and ensure the integrity and quality of the diaphragm 8. The sliding knife mechanism 3 can realize automatic collaborative work with other mechanisms of the automatic film laminating machine (such as the film pulling mechanism 2, the film laminating mechanism, etc.). During the entire production process, there is no need for frequent manual intervention in the clamping and cutting operations of the diaphragm 8, which greatly shortens the production cycle and improves production efficiency.

[0073] like Figure 1-Figure 2 and Figure 16 As shown, in some embodiments, the servo three-axis mechanism 51 is a three-axis moving mechanism composed of linear modules. The three-axis moving mechanism composed of linear modules has high efficiency, convenient debugging (easy adjustment of the film's position up and down, left and right, front and back), and low maintenance cost.

[0074] like Figure 1-Figure 2 and Figure 14-15 As shown, in some embodiments, the downward pressure film rolling mechanism 55 is an elastic downward pressure mechanism. The downward pressure film rolling mechanism 55 has a certain degree of elasticity and allows the bottom film to gradually contact from one end. During the film rolling process, the bottom film can fully contact the bottom of the module, preventing problems such as bubbles and warping.

[0075] like Figure 1-Figure 2 As shown, in some embodiments, the automatic film laminating machine further comprises several die heads, each of which is equipped with the unwinding mechanism 1. The die heads utilize a simple roller winding mechanism, which is simple, practical, reliable, and has low maintenance costs. Furthermore, the film laminating machine utilizes two die heads, with one die head loading while the other die head is in normal use, without affecting production and achieving high equipment utilization.

[0076] like Figure 1-Figure 2 and Figure 12-13As shown, in some embodiments, the automatic film laminating machine is used to apply a bottom film to the power battery module 10. The automatic film laminating machine also includes a flipping mechanism 6, which includes a flipping servo motor 61, a lifting mechanism 62, a clamping and retracting mechanism 63, and a clamping mechanism 64. The lifting mechanism 62 is used to lift the battery module 10, and the clamping and retracting mechanism 63 is used to drive the clamping mechanism 64 to move, so as to achieve the clamping of the battery module 10 by the clamping mechanism 64. The flipping servo motor 61 is used to drive the battery module 10 to flip so that the bottom of the battery module 10 faces upward. In the process of applying the bottom film to the power battery module 10 by the automatic film laminating machine, when the battery module 10 needs to be flipped, the lifting mechanism 62 starts to work. The lifting mechanism 62 generates an upward lifting force through its own power device (such as a cylinder, an electric push rod, etc.), and steadily lifts the battery module 10 placed on the workbench, so that it is out of the initial placement position, and is ready for subsequent clamping and flipping operations. After the battery module 10 is lifted to a suitable height, the clamping and retracting mechanism 63 is started. The clamping and retracting mechanism 63 is usually composed of a motor, a screw 23 nut pair or a cylinder and other components, which can drive the clamping mechanism 64 to move toward the battery module 10. The clamping mechanism 64 generally has a clamping surface that is adapted to the shape of the battery module 10. When the clamping mechanism 64 moves to contact the battery module 10, the battery module 10 is tightly clamped by a certain clamping force to ensure that the battery module 10 will not loosen or fall during the flipping process. After the battery module 10 is firmly clamped by the clamping mechanism 64, the flipping servo motor 61 starts working. The flipping servo motor 61 has high-precision rotation control capabilities. It transmits power to the clamping mechanism 64 and the battery module 10 through a transmission device (such as gear transmission, chain transmission, etc.), driving the battery module 10 to flip around a set axis. During the flipping process, the flip servo motor 61 can precisely control the flipping angle and speed, ensuring that the battery module 10 is smoothly and accurately flipped to the bottom-up position. After the battery module 10 is flipped, the lifting mechanism 62, the clamping and retracting mechanism 63, and the flip servo motor 61 can be reset according to the preset program to place the battery module 10 in the appropriate position for subsequent film application. At this time, other mechanisms of the automatic film application machine (such as the film application mechanism) can continue to apply film to the bottom of the battery module 10.

[0077] like Figure 1-Figure 2 and Figure 12-13As shown, in some embodiments, the flipping mechanism 6 also includes a folding mechanism 65 and a spline shaft mechanism. The folding mechanism 65 is used to fold the long sides of the power battery after the film is applied. The flip servo motor 61 is connected to the clamping mechanism 64 through the spline shaft mechanism to ensure that the bottom of the battery module 10 remains horizontal after flipping 180 degrees. The flip servo motor 61 is connected to the clamping mechanism 64 through the spline shaft mechanism. The spline shaft mechanism has high-precision transmission characteristics. It can accurately transmit the rotational power output by the flip servo motor 61 to the clamping mechanism 64, driving the clamping mechanism 64 and the clamped battery module 10 to rotate. During the flipping process of the battery module 10, the spline shaft mechanism can ensure the smoothness and accuracy of the rotation, so that the bottom of the battery module 10 can accurately maintain a horizontal state after flipping 180 degrees. This is because the key and keyway of the spline shaft are tightly matched, reducing the gap and error in the transmission process, thereby achieving high-precision position control. After the battery module 10 has completed a 180-degree flip and its bottom remains horizontal, the folding mechanism 65 begins folding the long sides of the battery module after film application. The folding mechanism 65 typically consists of a drive device (such as a cylinder or motor), a folding die, and a guide device. The drive device provides power, allowing the folding die to fold the film edges of the long sides of the battery module 10 according to a predetermined trajectory and force. The guide device ensures that the folding direction and position are accurate, thus completing the folding process of the long sides of the battery module 10.

[0078] The same or similar parts between the various embodiments in this specification can be referred to in conjunction with each other, and each embodiment focuses on the differences from other embodiments. In particular, for the method embodiments described later, since they correspond to the system, the description is relatively simple, and the relevant parts can be referred to the partial description of the system embodiment.

[0079] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. An automatic film laminating machine, characterized in that: Films for power battery modules include: An unwinding mechanism, which is used to unwind and feed the film; A film-pulling mechanism, wherein the film-pulling mechanism is used to control the length of the film; a sliding knife mechanism, which is used to cut the film after the film-drawing mechanism clamps and draws the film to a specified length; a film-joining mechanism, the film-joining mechanism being arranged above the film-pulling mechanism and being used to join the base film after the film-pulling action is completed; The film clamping mechanism includes a servo three-axis mechanism, an anti-slip clamping mechanism, a pitch-changing mechanism, a translation and telescopic mechanism, and a downward-pressing film rolling mechanism. The anti-slip clamping mechanism cooperates with the servo three-axis mechanism to transport the cut film. The pitch-changing mechanism cooperates with the anti-slip clamping mechanism to adapt to films of different lengths. The translation and telescopic mechanism cooperates with the anti-slip clamping mechanism to drive the translational movement of the anti-slip clamping mechanism. The downward-pressing film rolling mechanism is used to press the film onto the power battery module.

2. The automatic film laminating machine according to claim 1, characterized in that: The film pulling mechanism includes a clamping plate, a first servo motor, a screw and a connecting frame. The output end of the first servo motor is connected to the screw. The connecting frame is screwed to the screw. The clamping plate is installed on the connecting frame and is used to clamp the diaphragm.

3. The automatic film laminating machine according to claim 2, characterized in that: The automatic film laminating machine further comprises a winding mechanism, which comprises a winding roller, and the winding roller is used to wind up the release paper during the film drawing process.

4. The automatic film laminating machine according to claim 3, characterized in that: The automatic film laminating machine further comprises a synchronous belt, and the film-drawing mechanism and the winding mechanism are connected by the synchronous belt, so that when the film-drawing mechanism draws the film, the winding mechanism moves synchronously to wind the release paper.

5. The automatic film laminating machine according to claim 4, characterized in that: The film-joining mechanism includes a lifting part and a film-joining plate. The lifting part is arranged beside the film-drawing mechanism. The lifting part drives the film-joining plate to move up and down, and joins the film sheet after the film-drawing mechanism finishes film drawing.

6. The automatic film laminating machine according to claim 5, characterized in that: The sliding knife mechanism includes an upper film pressing plate, a lower film pressing plate, a distance adjusting mechanism and a cutting knife. The distance adjusting mechanism is connected to the upper film pressing plate and / or the lower film pressing plate to adjust the distance between the upper film pressing plate and the lower film pressing plate, thereby clamping the film, and the cutting knife cuts the film.

7. The automatic film laminating machine according to claim 1, characterized in that: The servo three-axis mechanism is a three-axis moving mechanism composed of linear modules; And / or, the downward pressing film rolling mechanism is an elastic downward pressing mechanism.

8. The automatic film laminating machine according to claim 1, characterized in that: The automatic film laminating machine further comprises a plurality of machine heads, and the unwinding mechanism is installed on each of the plurality of machine heads.

9. The automatic film laminating machine according to any one of claims 1 to 8, characterized in that: The automatic film laminating machine is used to apply the bottom film to the power battery module. The automatic film laminating machine also includes a flipping mechanism, which includes a flipping servo motor, a lifting mechanism, a clamping and retracting mechanism, and a clamping mechanism. The lifting mechanism is used to lift the battery module, and the clamping and retracting mechanism is used to drive the clamping mechanism to move so that the clamping mechanism can clamp the battery module. The flipping servo motor is used to drive the battery module to flip so that the bottom of the battery module faces upward.

10. The automatic film laminating machine according to claim 9, characterized in that: The flipping mechanism also includes a folding mechanism and a spline shaft mechanism. The folding mechanism is used to fold the long sides of the power battery after the film is applied. The flipping servo motor is connected to the clamping mechanism through the spline shaft mechanism to ensure that the bottom of the battery module remains level after flipping 180 degrees.

Images