Multi-layer film full-automatic folding equipment and control method thereof

Abstract

The application discloses a kind of full-automatic folding equipment of multilayer film and control method thereof.The folding equipment is located downstream of film cutting machine, including folding mechanism and stacking position assembly in the equipment main frame;Folding mechanism includes smoothing roller assembly, intermediate sheet traction assembly, detection photoelectric, film incoming traction assembly;Film incoming traction assembly is located below intermediate sheet traction assembly, reciprocatingly executes the operation of clamping, forward traction, turnover and reverse traction film incoming;Intermediate sheet traction assembly reciprocatingly executes clamping, forward traction intermediate sheet incoming;Smoothing roller assembly reciprocatingly executes smoothing folding sheet;Stacking clamping assembly clamps smoothed film to the stacking position;Detection photoelectric is located above the vacuum adsorption platform, receives incoming position signal.The application can meet the higher rhythm production requirement of 3P / min, folding neatness is higher and film damage is smaller, both meet production efficiency and improve the quality of automatic production product.

Description

Technical Field

[0001] This invention relates to the field of diaphragm processing equipment technology, and more specifically, to a fully automatic folding device for multilayer diaphragms and its control method. Background Technology

[0002] In today's water purification industry, reverse osmosis membrane separation technology, with its superior separation performance and low energy consumption and high efficiency, has become a highly competitive new commercial water treatment process. Spiral-wound reverse osmosis membrane elements are based on the principle of reverse osmosis. An RO semi-permeable membrane and a flow-guiding mesh are bonded together in a specific arrangement and wound onto a central tube with drainage holes to form the element. When raw water enters the mesh layer from one end of the element, under external pressure, a portion of the water permeates through the pores of the semi-permeable membrane into the flow layer, then flows along the channels of the flow-guiding layer to the drainage holes in the central tube, exiting as deionized ultrapure water. The remaining portion (i.e., concentrated water) is discharged from the other end of the mesh layer. Furthermore, spiral-wound reverse osmosis membrane elements also feature high desalination rates, high fouling resistance, high removal rates of elements such as boron, silicon, and germanium, and low TOC dissolution rates, thereby reducing the processing pressure of subsequent systems and improving the circulation and utilization efficiency of subsequent systems. They have become the "heart" of the chip industry.

[0003] Reverse osmosis membranes are crucial components of spiral-wound reverse osmosis membrane elements. During production, they primarily consist of upper and lower membrane layers and an intermediate mesh sheet. To ensure continuous and efficient production, both the membranes and mesh sheet are supplied in rolls. These are then cut to specific parameters using a cutting machine. The upper and lower membrane layers are then folded in half, with the intermediate mesh sheet placed between the folds, preparing for subsequent coating and molding. Currently, the folding and placement of the membrane layers are done manually, resulting in low production efficiency. There is currently no highly automated membrane stacking equipment available on the market.

[0004] Therefore, developing a fully automated folding device for multilayer films and its control method to improve the production efficiency of multilayer films is a technical problem to be solved. Summary of the Invention

[0005] To address the aforementioned deficiencies in existing technologies, this invention provides a fully automated folding device for multilayer films and its control method, which can meet the high production cycle requirement of 3P / min, achieve high folding neatness, and minimize damage to the films, thus satisfying both production efficiency and improving the quality of automated production products.

[0006] To achieve the above objectives, on the one hand, the present invention provides a fully automatic folding device for multilayer films, located downstream of a film cutting machine, including a base and a main frame of the device above it, characterized in that it further includes a folding mechanism and a stacking position assembly inside the main frame of the device; the folding mechanism includes a smoothing roller assembly, an intermediate sheet traction assembly, a detection photoelectric device, and a film feeding traction assembly;

[0007] The membrane material traction assembly is located below the intermediate sheet traction assembly and reciprocates to perform clamping, forward traction, flipping, and reverse traction operations on the membrane material. It includes a vacuum adsorption platform, a membrane traction execution module and its servo motor, and a membrane clamping assembly; the membrane clamping assembly is equipped with a rotating mechanism.

[0008] The intermediate sheet traction assembly reciprocates to clamp and forward pull the incoming intermediate sheet material, including a traction guide plate, an intermediate sheet clamping assembly and its traction mechanism; the intermediate sheet clamping assembly clamps the incoming intermediate sheet material, pulls the incoming intermediate sheet material downward along the traction guide plate to a designated position on the vacuum adsorption platform and then releases it.

[0009] The smoothing roller assembly reciprocates to smooth the folded sheet, including the roller and its two ends with pressing cylinders, slide rails, smoothing execution modules and their servo motors; the slide rails are located on both sides of the vacuum adsorption platform; the roller moves along the slide rails under the traction of the smoothing execution module to smooth the film on the vacuum adsorption platform;

[0010] The stacking position assembly includes a stacking clamping assembly and its traction mechanism, and a stacking position; the stacking clamping assembly clamps the flattened diaphragm to the stacking position; the detection photoelectric device is located above the vacuum adsorption platform to receive the position signal of the incoming material.

[0011] Furthermore, the vacuum adsorption platform is connected to the vacuum adsorption cavity at a specific lower part through a channel; the diaphragm clamping assembly is located at both ends of the longitudinally arranged module transverse moving profile; the vacuum adsorption platform has a slot in the middle, and the diaphragm traction execution module, which is arranged horizontally below the slot, is connected to the module transverse moving profile for transmission.

[0012] Furthermore, the intermediate piece traction assembly includes side plates mounted on both sides of the vacuum adsorption platform; a coupling, a drive shaft, and an intermediate piece traction execution servo motor are mounted on the side plates; the drive shaft is connected to a synchronous pulley; a number of rollers fixed on the outside of the side plates and the synchronous belt of the synchronous pulley cyclically drive the intermediate piece clamping assembly to traction and reset along a designated route.

[0013] Furthermore, a side plate support rod is provided between the side plates; the traction guide plate is fixed by the side plate support rod.

[0014] Furthermore, the leveling execution module is arranged parallel to the slide rail on one side of the vacuum adsorption platform, and is connected to the fixed seat of the pressing cylinder through the module connecting seat, driving the roller on the upper part of the pressing cylinder to move laterally.

[0015] Furthermore, the stacking position assembly includes two upright profiles and a middle crossbar, a stacking clamping assembly located on one side of the upright profiles, and a stacking position execution module located on the crossbar; the operating side of the main frame of the equipment is provided with a safety door; the stacking position is located near the safety door.

[0016] Furthermore, the stacking position includes stacking position A and stacking position B arranged in parallel; the stacking position A and stacking position B are switched by the stacking position execution module 5.6.1, rodless cylinder and stacking linear slide rail at their bottom; the full material stacking position is switched to be close to the safety door.

[0017] Furthermore, stacking positions A and B are provided with limiting rods at the ends away from the vacuum adsorption platform.

[0018] On the other hand, the present invention provides a control method for a fully automatic folding device for multilayer films as described above, characterized by comprising the following steps:

[0019] Step S101: The intermediate sheet traction assembly and the diaphragm material traction assembly respectively clamp the intermediate sheet material and the diaphragm material;

[0020] Step S102: The membrane is pulled to the designated position until the photoelectric trigger is detected and a positioning signal is sent. The vacuum adsorption platform then adsorbs and fixes the membrane.

[0021] Step S103: The intermediate sheet is pulled to the designated position on the membrane;

[0022] Step S104: The membrane clamping assembly clamps the membrane end, flips it over, and returns it to the folded state;

[0023] Step S105: Smooth the roller assembly horizontally to smooth the multi-layer film, and press down at the fold to flatten the fold.

[0024] Step S106: The stacking clamping assembly drags the folded multi-layer film to the stacking position.

[0025] Furthermore, the stacking position is divided into stacking position A and stacking position B; after stacking position A is full, the stacking position is switched from stacking position A to stacking position B to continue stacking, and the workers are prompted to transfer the multilayer film products in the full stacking position in a timely manner, and so on.

[0026] Compared with the prior art, the present invention has the following advantages or beneficial effects:

[0027] (1) The folding mechanism of the present invention rationally designs the spatial relationship between the intermediate sheet traction component and the film feeding traction component, and combines the effective cooperation of the film feeding traction component and the smoothing roller component. By setting up detection photoelectric to capture positioning signals, the equipment meets the production requirements of high cycle time, and the folding is relatively neat, with less damage to the film.

[0028] (2) The present invention further designs an automatic switching mechanism for full material at the stacking position to meet the requirement of continuous production without stopping the production line and further improve production efficiency.

[0029] (3) The equipment of the present invention is compatible with diaphragm products of different lengths but the same width, and has high product compatibility. It is an important piece of equipment for realizing the automated production of subsequent processes. Attached Figure Description

[0030] The invention, its features, shape, and advantages will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference numerals denote like parts throughout the drawings. The drawings are not drawn to scale; the focus is on illustrating the spirit of the invention.

[0031] Figure 1 This is a schematic diagram of a fully automatic folding device and a film cutting machine for multilayer films according to an embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram of the overall structure of a fully automatic folding device for multilayer films according to an embodiment of the present invention;

[0033] Figure 3 This is a schematic diagram of the internal structure of a fully automatic folding device for multilayer films according to an embodiment of the present invention;

[0034] Figure 4 This is a three-dimensional structural diagram of a diaphragm feeding traction assembly according to an embodiment of the present invention;

[0035] Figure 5 for Figure 4 Enlarged view of section A in the middle;

[0036] Figure 6 for Figure 4 The corresponding main view;

[0037] Figure 7 This is a three-dimensional structural diagram of the intermediate piece traction assembly in one embodiment of the present invention;

[0038] Figure 8 for Figure 7 The corresponding left view;

[0039] Figure 9 for Figure 8 Enlarged view of the middle W section;

[0040] Figure 10 for Figure 7 The corresponding rear view;

[0041] Figure 11 This is a three-dimensional structural diagram of the smoothing roller assembly in one embodiment of the present invention;

[0042] Figure 12 This is a three-dimensional structural diagram of a stacking position component according to an embodiment of the present invention;

[0043] Figure 13 for Figure 12 The corresponding main view;

[0044] Figure 14 for Figure 12 The corresponding right view;

[0045] The components include: 1. Film cutting machine; 2. Base; 3. Main frame of the equipment; 4. Safety door; 5. Folding mechanism; 7. Film feeding; 8. Intermediate sheet feeding; 5.1 Vacuum generator; 5.2 Leveling roller assembly; 5.3 Intermediate sheet traction assembly; 5.4 Detection photoelectric device; 5.5 Film feeding traction assembly; 6. Stacking position assembly; 5.2.1 Roller; 5.2.2 Slider bearing; 5.2.3 Pressing cylinder; 5.2.4 Cylinder mounting. 5.2.5 Mounting base; 5.2.6 Slide rail; 5.2.7 Module connecting base; 5.2.8 Leveling execution module; 5.3.1 Mid-section traction execution servo motor; 5.3.2 Coupling; 5.3.3 Drive shaft; 5.3.4 Traction guide plate; 5.3.5 Synchronous pulley; 5.3.6 Synchronous belt; 5.3.7 Synchronous belt traction block; 5.3.8 Side plate; 5.3.9 Side plate 5.3.10 Support rod; 5.3.11 Intermediate sheet clamping assembly; 5.3.11 Intermediate sheet clamping assembly fixing block; 5.5.1 Vacuum adsorption chamber; 5.5.2 Diaphragm traction actuation servo motor; 5.5.3 Module mounting plate; 5.5.4 Cable chain; 5.5.5 Diaphragm clamping assembly; 5.5.6 Rotation mechanism; 5.5.7 Diaphragm clamping assembly mounting block; 5.5.8 Module transverse profile; 5.5.9 Diaphragm traction actuation module Group; 5.5.10, Vacuum Adsorption Platform; 5.6.1, Stacking Position Execution Module; 5.6.2, Column Profile; 5.6.3, Limiting Rod; 5.6.4, Rodless Cylinder; 5.6.5, Module Mounting Plate; 5.6.6, Stacking Position A; 5.6.7, Stacking Linear Slide Rail; 5.6.8, Cylinder Connecting Plate; 5.6.9, Stacking Position B; 5.6.10, Stacking Clamping Assembly; 5.6.11, Stacking Clamping Assembly Mounting Block. Detailed Implementation

[0046] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but these are not intended to limit the scope of the invention.

[0047] In the following detailed description, the orientations or positional relationships indicated by terms such as "upper," "lower," "top," and "bottom" are based on the orientations or positional relationships shown in the accompanying drawings and are only for the purpose of describing the present invention and not as requiring the present invention to be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0048] The slide rails, servo motors, rollers, cylinders, etc., involved in the following effect embodiments and examples are all commercially available, and the control methods used are existing technologies that can be retrieved. The specific connection methods of each component all employ conventional methods such as bolts, rivets, and welding, which are mature technologies in the prior art. Furthermore, the structure and principles of components known to those skilled in the art can be obtained by those skilled in the art through technical manuals or conventional experimental methods. The power supply system and signal control system settings of the equipment in the following effect embodiments and examples are not fully described clearly. However, those skilled in the art, understanding the above-described inventive principles, can clearly understand the details of the power supply system and signal control system. The control method of the inventive principle can be automatically controlled by a controller, and the controller's control circuit can be implemented by those skilled in the art through programming according to the inventive principle.

[0049] It should also be noted that the execution order of actions, steps, etc. in the apparatus and method shown in the claims and specification can be implemented in any order, as long as there is no special express restriction on the order and the output of the preceding processing is not used in the subsequent processing.

[0050] Example

[0051] See Figures 1 to 3 This embodiment provides a fully automatic folding device for multilayer films, located downstream of the film cutting machine 1. It includes a base 2 and a main frame 3 above it, as well as a folding mechanism 5 and a stacking position assembly 6 inside the main frame 3. The folding mechanism 5 includes a smoothing roller assembly 5.2, an intermediate sheet traction assembly 5.3, a detection photoelectric sensor 5.4, and a film feeding traction assembly 5.5.

[0052] See Figures 3 to 6 The membrane material traction assembly 5.5 is located below the intermediate sheet traction assembly 5.3 and reciprocates to perform the operations of clamping, forward traction, flipping and reverse traction of the membrane material 7. It includes a vacuum adsorption platform 5.5.10, a membrane traction execution module 5.5.9 and its servo motor, and a membrane clamping assembly 5.5.5; the membrane clamping assembly 5.5.5 is equipped with a rotating mechanism 5.5.6.

[0053] See Figure 3 and Figures 7 to 10The intermediate sheet traction assembly 5.3 reciprocates to clamp and forward pull the intermediate sheet material 8, including the traction guide plate 5.3.4, the intermediate sheet clamping assembly 5.3.10 and its traction mechanism; the intermediate sheet clamping assembly 5.3.10 clamps the intermediate sheet material 8, pulls the intermediate sheet material 8 downward along the traction guide plate 5.3.4 to the designated position on the vacuum adsorption platform 5.5.10 and then releases it.

[0054] See Figure 3 and Figure 11 The smoothing roller assembly 5.2 reciprocates to smooth the folded sheet, including the roller 5.2.1 and the pressing cylinders 5.2.3 at both ends, the slide rail 5.2.5, the smoothing execution module 5.2.7 and its servo motor; the slide rail 5.2.5 is located on both sides of the vacuum adsorption platform 5.5.10; the roller 5.2.1 moves along the slide rail 5.2.5 under the traction of the smoothing execution module 5.2.7 to smooth the diaphragm on the vacuum adsorption platform 5.5.10.

[0055] See Figure 3 and Figures 12 to 14 The stacking position component 6 includes a stacking clamping component 5.6.10 and its traction mechanism, and a stacking position; the stacking clamping component 5.6.10 clamps the flattened membrane to the stacking position; the detection photoelectric sensor 5.4 is located above the vacuum adsorption platform 5.5.10 to receive the position signal of the incoming material.

[0056] The clamping component in this embodiment can be a cylinder-operated finger clamp, and its rotating mechanism 5.5.6 can be a rotary cylinder, or it can be a similar clamping and rotating mechanism controlled by a motor, etc.

[0057] The control method for the aforementioned fully automatic folding equipment for multi-layer films includes the following steps:

[0058] Step S101: The intermediate sheet traction assembly 5.3 and the diaphragm sheet inlet traction assembly 5.5 respectively pick up the intermediate sheet inlet 8 and the diaphragm sheet inlet 7;

[0059] Step S102: The membrane is pulled to the designated position until the photoelectric sensor 5.4 is triggered and sends a positioning signal, and the vacuum adsorption platform 5.5.10 adsorbs and fixes the membrane.

[0060] Step S103: The intermediate sheet is pulled to the designated position on the membrane;

[0061] Step S104: The membrane clamping assembly 5.5.5 flips the clamping membrane end and pulls it back to the folded state;

[0062] Step S105, Smoothing the roller assembly 5.2: Smooth the multi-layer film horizontally, and press down at the fold to make the fold flat;

[0063] Step S106, Stacking clamping assembly 5.6.10: Drag the folded multi-layer film to the stacking position.

[0064] The following provides exemplary structural or construction details for the main components of the device. It is understood that the functional implementation of each main component is not limited to the specific structures described below. Any person skilled in the art can make many possible variations and modifications to the technical solutions of this invention using the methods and techniques disclosed above, or modify them into equivalent embodiments with equivalent changes, without departing from the scope of the invention. This does not affect the substantive content of the invention.

[0065] As a preferred technical solution, see Figures 4 to 6 The vacuum adsorption platform 5.5.10 is connected to the vacuum adsorption chamber 5.5.1 at a specific location below it via a channel. The vacuum is generated by the vacuum generator 5.1 drawing gas from the vacuum adsorption chamber 5.5.1. The diaphragm clamping assembly 5.5.5 is located at both ends of the longitudinally arranged module transverse profile 5.5.8 via the diaphragm clamping assembly mounting block 5.5.7. The vacuum adsorption platform 5.5.10 has a slot in the middle. Below the slot, the diaphragm traction execution module 5.5.9, transversely arranged via the module mounting plate 5.5.3, is driven by the diaphragm traction execution servo motor 5.5.2 and is connected to the module transverse profile 5.5.8. It is understood that the reciprocating motion of the diaphragm traction execution module 5.5.9 is achieved via a cable chain 5.5.4 or a similar mechanism.

[0066] As a preferred technical solution, see Figures 7 to 10 The intermediate piece traction assembly 5.3 includes side plates 5.3.8 mounted on both sides of the vacuum adsorption platform 5.5.10; a coupling 5.3.2, a drive shaft 5.3.3, and an intermediate piece traction execution servo motor 5.3.1 are mounted on the side plates 5.3.8; the drive shaft 5.3.3 is connected to a synchronous pulley 5.3.5; a synchronous belt 5.3.6, consisting of several rollers fixed to the outside of the side plates 5.3.8 and the synchronous pulley 5.3.5, cyclically drives the intermediate piece clamping assembly 5.3.10 to be pulled and reset along a designated route. The intermediate piece clamping assembly 5.3.10 moves synchronously with the synchronous belt 5.3.6 through the synchronous belt traction block 5.3.7 and the intermediate piece clamping assembly fixing block 5.3.11. More specifically, a side plate support rod 5.3.9 is provided between the side plates 5.3.8; the traction guide plate 5.3.4 can be fixed through the side plate support rod 5.3.9.

[0067] As a preferred technical solution, see Figure 3 and Figure 11The leveling execution module 5.2.7 is parallel to the slide rail 5.2.5 and located on one side of the vacuum adsorption platform 5.5.10. It is connected to the fixed seat of the pressing cylinder 5.2.3 via the module connecting seat 5.2.6, driving the roller 5.2.1 on the upper part of the pressing cylinder 5.2.3 to move laterally. The roller 5.2.1 is mounted via a slider bearing 5.2.2; the pressing cylinder 5.2.3 is mounted on the fixed seat via a cylinder mounting seat 5.2.4; the leveling execution module 5.2.7 is driven by the leveling execution module servo motor 5.2.8.

[0068] As a preferred technical solution, see Figure 2 , Figure 3 and Figure 12 The stacking position component 6 includes two upright profiles 5.6.2 and a middle crossbar, a stacking clamping component 5.6.10 mounted on one side of the upright profiles 5.6.2 via a stacking clamping component mounting block 5.6.1, and a stacking position execution module 5.6.1 mounted on the crossbar via a module mounting plate 5.6.5; a safety door 4 is provided on the operating side of the main frame 3 of the equipment; the stacking position is close to the safety door 4.

[0069] More specifically, see Figures 12 to 14 The stacking positions include stacking positions A (5.6.6) and B (5.6.9) arranged in parallel. Stacking positions A (5.6.6) and B (5.6.9) are switched via a stacking position execution module (5.6.1), a rodless cylinder (5.6.4), a cylinder connecting plate (5.6.8), and a stacking linear slide rail (5.6.7) at their bottom. When the material is full, the stacking position is switched to be closer to the safety door (4). Furthermore, stacking positions A (5.6.6) and B (5.6.9) are equipped with a limiting rod (5.6.3) at the end furthest from the vacuum adsorption platform (5.5.10).

[0070] To more clearly illustrate the technical solution and its effects of the present invention, the following describes the specific implementation process of the multi-layer film fully automatic folding device of this embodiment in conjunction with the above technical solution.

[0071] The cutting machine 1 cuts the intermediate sheet and reverse osmosis membrane sheet from the production line source into membrane sheet material 6 and intermediate sheet material 7 of the required lengths, respectively, and sends them to the docking point with the fully automatic multi-layer membrane folding equipment. The intermediate sheet clamping assembly 5.3.10 clamps the intermediate sheet material 7, and the membrane sheet clamping assembly 5.5.5 clamps the membrane sheet material 6. The membrane sheet traction execution module 5.5.9 moves the traction module laterally to move the profile 5.5.8, thereby driving the membrane sheet clamping assembly 5.5.5 and the clamped membrane sheet material 7 to the designated position until the detection photoelectric sensor 5.4 triggers and sends a positioning signal. Then, under the action of the vacuum generator 5.1, a vacuum is established in the vacuum adsorption chamber 5.5.1, adsorbing and fixing the rear half of the membrane sheet material 6 onto the vacuum adsorption platform 5.5.10. Simultaneously, the intermediate sheet traction execution servo motor 5.3.1 actuates and drives the clamping assembly 5.3.10 via the transmission shaft 5.3.3, synchronous belt 5.3.6, and synchronous pulley 5.3.5, thereby pulling the intermediate sheet material 7 down along the traction guide plate 5.3.4 until it is pulled to the theoretical folding position of the already positioned film material 6. Then, the intermediate sheet clamping assembly 5.3.10 releases and returns to the intermediate sheet material gripping position to wait. Under the flipping action of the rotating mechanism 5.5.6, the film clamping assembly 5.5.5 flips one end of the film. Then, the film traction execution module 5.5.9 moves towards the cutting machine, thereby folding the film in half. After reaching the position, the smoothing roller 5.2.1 moves along the fold line side of the film under the action of the smoothing execution module servo motor 5.2.8. Under the action of the roller 5.2.1, the folded film is smoothed out. Then, near the fold line, the pressing cylinder 5.2.3 causes the roller 5.2.1 to press down, flattening the fold line. The roller 5.2.1 is then lifted by the pressing cylinder 5.2.3 and returns to its original position under the action of the smoothing execution module 5.2.7. In the stacking position assembly 6, the stacking clamping assembly 5.6.10, under the action of the stacking position execution module 5.6.1, clamps the folded film piece and drags it to stacking position A 5.6.6, where it is limited by the limiting rod 5.6.3. This completes the folding of the first film piece. The above actions are repeated to complete the folding of the second, third, and so on, until stacking position A is full. After the material is full, under the action of the rodless cylinder 5.6.4, the stacking position changes from stacking position A 5.6.6 to stacking position B 5.6.9 to continue stacking. At this time, the full stacking position A 5.6.6 is close to the safety door 4, which makes it convenient for the manual transfer of the folded film in a timely manner.

[0072] As can be seen from the above description of the specific embodiments, the multi-layer diaphragm fully automatic folding equipment disclosed in this invention, through the rational design of the spatial relationship between the intermediate sheet traction component and the diaphragm feeding traction component, combined with the effective cooperation of the diaphragm feeding traction component and the smoothing roller component, and by capturing positioning signals through the installation of detection photoelectric sensors, enables the equipment to meet the requirements of high-speed production, with high folding neatness and minimal damage to the diaphragm. Furthermore, the equipment is also compatible with processing diaphragm products of different lengths but the same width, demonstrating strong versatility.

[0073] In summary, this invention provides a fully automated folding device for multi-layer films and its control method. The folding device is located downstream of the film cutting machine and includes a folding mechanism and a stacking assembly within the main frame of the device. The folding mechanism includes a smoothing roller assembly, an intermediate sheet traction assembly, a detection photoelectric sensor, and a film feeding traction assembly. The film feeding traction assembly is located below the intermediate sheet traction assembly and reciprocates to perform clamping, forward traction, flipping, and reverse traction of the incoming film. The intermediate sheet traction assembly reciprocates to clamp and forward traction of the intermediate sheet. The smoothing roller assembly reciprocates to smooth the folded film. The stacking clamping assembly clamps the smoothed film to the stacking position. The detection photoelectric sensor is located above the vacuum adsorption platform to receive the position signal of the incoming material. This invention can meet the high cycle time requirement of 3P / min, achieves high folding neatness, and minimizes damage to the film, thus satisfying both production efficiency and improving the quality of automated production products.

[0074] Those skilled in the art should understand that variations can be implemented by combining existing technology with the above embodiments, which will not be elaborated here. Such variations do not affect the essential content of the present invention and will not be elaborated here. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the protection scope of the technical solution of the present invention.

Claims

1. A fully automatic folding device for multilayer films, located downstream of a film cutting machine (1), comprising a base (2) and an upper main frame (3), characterized in that, It also includes a folding mechanism (5) and a stacking position assembly (6) inside the main frame (3) of the equipment; the folding mechanism (5) includes a flattening roller assembly (5.2), an intermediate sheet traction assembly (5.3), a detection photoelectric device (5.4), and a diaphragm feeding traction assembly (5.5). The membrane material traction assembly (5.5) is located below the intermediate sheet traction assembly (5.3) and reciprocates to perform clamping, forward traction, flipping and reverse traction of the membrane material (7). It includes a vacuum adsorption platform (5.5.10), a membrane traction execution module (5.5.9) and its servo motor, and a membrane clamping assembly (5.5.5). The membrane clamping assembly (5.5.5) is equipped with a rotating mechanism (5.5.6). The intermediate sheet traction assembly (5.3) reciprocates to clamp and forward pull the intermediate sheet material (8), including a traction guide plate (5.3.4), an intermediate sheet clamping assembly (5.3.10), and its traction mechanism; the intermediate sheet clamping assembly (5.3.10) clamps the intermediate sheet material (8), pulls the intermediate sheet material (8) downward along the traction guide plate (5.3.4) to a designated position on the vacuum adsorption platform (5.5.10), and then releases it; The smoothing roller assembly (5.2) reciprocates to smooth the folded sheet, including a roller (5.2.1) and its two ends with pressing cylinders (5.2.3), a slide rail (5.2.5), a smoothing execution module (5.2.7) and its servo motor; the slide rail (5.2.5) is located on both sides of the vacuum adsorption platform (5.5.10); the roller (5.2.1) moves along the slide rail (5.2.5) under the traction of the smoothing execution module (5.2.7) to smooth the diaphragm on the vacuum adsorption platform (5.5.10); The stacking position assembly (6) includes a stacking clamping assembly (5.6.10) and its traction mechanism, and a stacking position; the stacking clamping assembly (5.6.10) clamps the flattened membrane to the stacking position; the detection photoelectric sensor (5.4) is located above the vacuum adsorption platform (5.5.10) and receives the position signal of the incoming material.

2. The fully automatic folding device for multi-layer films according to claim 1, characterized in that, The vacuum adsorption platform (5.5.10) is connected to the vacuum adsorption cavity (5.5.1) at a specific part of its lower part through a channel; the diaphragm clamping assembly (5.5.5) is located at both ends of the longitudinally arranged module transverse profile (5.5.8); the vacuum adsorption platform (5.5.10) has a slot in the middle, and the diaphragm traction execution module (5.5.9) arranged horizontally below the slot is connected to the module transverse profile (5.5.8) for transmission.

3. A fully automatic folding device for multi-layer films according to claim 1 or 2, characterized in that, The intermediate piece traction assembly (5.3) includes side plates (5.3.8) mounted on both sides of the vacuum adsorption platform (5.5.10); a coupling (5.3.2), a drive shaft (5.3.3), and an intermediate piece traction execution servo motor (5.3.1) are mounted on the side plates (5.3.8); the drive shaft (5.3.3) is connected to a synchronous pulley (5.3.5); a number of rollers fixed on the outside of the side plates (5.3.8) and the synchronous belt (5.3.6) of the synchronous pulley (5.3.5) cyclically drive the intermediate piece clamping assembly (5.3.10) to traction and reset along a designated route.

4. The fully automatic folding device for multi-layer films according to claim 3, characterized in that, A side plate support rod (5.3.9) is provided between the side plates (5.3.8); the traction guide plate (5.3.4) is fixed by the side plate support rod (5.3.9).

5. A fully automatic folding device for multi-layer films according to claim 1 or 2, characterized in that, The smoothing execution module (5.2.7) is parallel to the slide rail (5.2.5) and is set on one side of the vacuum adsorption platform (5.5.10). It is connected to the fixed seat of the pressing cylinder (5.2.3) through the module connecting seat (5.2.6) and drives the roller (5.2.1) on the upper part of the pressing cylinder (5.2.3) to move laterally.

6. A fully automatic folding device for multi-layer films according to claim 1 or 2, characterized in that, The stacking position assembly (6) includes two upright profiles (5.6.2) and a middle crossbar, a stacking clamping assembly (5.6.10) located on one side of the upright profiles (5.6.2) and a stacking position execution module (5.6.1) located on the crossbar; the operating side of the main frame (3) of the equipment is provided with a safety door (4); the stacking position is close to the safety door (4).

7. The fully automatic folding device for multi-layer films according to claim 6, characterized in that, The stacking positions include stacking positions A (5.6.6) and B (5.6.9) arranged in parallel; stacking positions A (5.6.6) and B (5.6.9) are switched by stacking position execution module 5.6.1, rodless cylinder (5.6.4) and stacking linear slide rail (5.6.7) at their bottom; the full stacking position is switched to be close to the safety door (4).

8. The fully automatic folding device for multi-layer films according to claim 7, characterized in that, The stacking positions A (5.6.6) and B (5.6.9) are provided with a limiting rod (5.6.3) at the end away from the vacuum adsorption platform (5.5.10).

9. A control method for a fully automatic folding device for multilayer films as described in any one of claims 1 to 8, characterized in that, Includes the following steps: Step S101: The intermediate sheet traction assembly (5.3) and the diaphragm material traction assembly (5.5) respectively pick up the intermediate sheet material (8) and the diaphragm material (7). Step S102: The membrane is pulled to the designated position until the photoelectric sensor (5.4) is triggered and sends a positioning signal, and the vacuum adsorption platform (5.5.10) adsorbs and fixes the membrane. Step S103: The intermediate sheet is pulled to the designated position on the membrane; Step S104, diaphragm clamping assembly ( 5.5.5) Flip the clamped diaphragm end and pull it back to the folded state; Step S105: Smooth the roller assembly (5.2) and smooth the multi-layer film horizontally. Press down at the fold to make the fold flat. Step S106: The stacking clamping assembly (5.6.10) drags the folded multi-layer film to the stacking position.

10. The control method for a fully automatic folding device for multi-layer films according to claim 9, characterized in that, The stacking position is divided into stacking position A and stacking position B. After stacking position A is full, the stacking position is switched from stacking position A to stacking position B to continue stacking, and the workers are prompted to transfer the multilayer film products in the full stacking position in a timely manner, and so on.

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