Compression roller structure for automatic winding and base coating machine
By introducing an automatic rewinding pressure roller structure and a primer coater into the coating machine, the problems of bottom wrinkling, slippage, unwinding, and bubble bulging during the coating machine's rewinding process have been solved, improving the flatness and aesthetics of the roll material and increasing production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-05
- Publication Date
- 2026-04-03
AI Technical Summary
Existing coating machines suffer from problems such as bottom wrinkles, slippage and unwinding during the winding process, as well as air bubbles, which affect product quality and production efficiency.
It adopts an automatic winding pressure roller structure, including a pressure roller assembly, a drive assembly, a winding rubber pressure roller and a swing arm mounting plate. The pressure roller is uniformly controlled by a cylinder and an adjustment assembly, and constant pressure and automatic roll changing are achieved by combining a roll motor encoder and an electro-proportional valve.
It effectively eliminates horizontal lines and bubble bulges, improves the flatness and appearance of the rolled material, and ensures the stability and efficiency of production.
Smart Images
Figure CN224076698U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of battery production technology, specifically to an automatic winding pressure roller structure and a primer coating machine. Background Technology
[0002] In the field of coating technology, the classification of coating machines and their respective functions are crucial for ensuring the accuracy and efficiency of material handling in battery production. Among them, the primer coater, as the first step in the coating process, plays a vital role in providing pretreatment for the substrate. Specifically, the primer coater is designed to apply a conductive paste uniformly and precisely to the surface of aluminum foil before the main coating process. This process requires not only achieving specific appearance effects, dimensional accuracy, and areal density distribution, but also strict control within design specifications. After coating, following a specialized drying process, the coated aluminum foil is orderly rolled up for subsequent processing.
[0003] However, in practical applications, the coating and winding processes face a series of technical challenges. While turret-type automatic winding machines, as key equipment for improving production line automation and equipment utilization, have significantly improved operational efficiency through automatic cutting and starting tape splicing technology, they have also introduced some new problems. In particular, the presence of residual substrate during the cutting process often leads to bottom wrinkles during roll winding, which not only affects the product's appearance quality but may also adversely impact subsequent processing.
[0004] Furthermore, the characteristics of the coating slurry also determine the quality of the final product to a certain extent. After oven drying, the coefficient of friction of the substrate surface of some slurries is significantly reduced, making the substrate prone to slippage or unwinding during the winding process, further exacerbating the instability in the production process.
[0005] In addition to the factors mentioned above, issues such as the stability of tension control, dimensional changes in the substrate and slurry due to thermal expansion and contraction, and potential parallelism deviations between rollers are also important causes of horizontal lines defects in coated products. These horizontal lines not only affect the aesthetics of the product but may also negatively impact battery performance.
[0006] More seriously, if air bubbles are introduced into the substrate during the winding process, these air bubbles will form bulges inside the substrate, severely damaging the structural integrity of the product and potentially damaging the coating equipment. This poses a threat to the smooth operation of the entire battery production process and directly affects the yield and output of battery production. Utility Model Content
[0007] To overcome the shortcomings of existing technologies, this application provides an automatic winding pressure roller structure and a primer coating machine, aiming to improve production efficiency and product quality.
[0008] The technical means adopted by this utility model to solve its technical problem is: an automatic winding pressure roller structure, applied in a primer coating machine, characterized in that it includes: a pressure roller assembly, a drive assembly, a winding adhesive pressure roller, and a swing arm mounting plate, wherein...
[0009] The pressure roller assembly is mounted on the turret and symmetrically connected to both ends of the take-up rubber pressure roller via a first pressure roller swing arm and a second pressure roller swing arm, used to apply uniform pressure to the material during the winding process; the other ends of the first and second pressure roller swing arms are connected to the drive assembly via an adjustment assembly.
[0010] The drive assembly includes a first cylinder and a second cylinder. One end of the first cylinder and the second cylinder is fixed to a flange bearing by a cylinder fixing pin, and the other end is connected to the swing arm mounting plate by a piston rod. The swing arm mounting plate can swing around the optical axis to provide the swing driving force for the pressure roller assembly. The other end of the swing arm mounting plate is mounted on the pressure roller fixing seat by a rotating shaft. The pressure roller fixing seat is mounted on the primer coating machine.
[0011] The adjustment component described in the above technical solution includes a pad block and a roller fixing block, wherein,
[0012] The first pressure roller swing arm and the second pressure roller swing arm are connected to one end of the idler roller fixing block through a pad block. The other end of the idler roller fixing block has a through hole, and the roller is sleeved on the optical axis through the through hole.
[0013] In the above technical solution, the pad is fixed to one end of the idler roller fixing block by bolt connection. The bolt passes through the reserved holes on the pad and the idler roller fixing block and is tightened with nuts. An elastic washer is provided between the bolt and the nut.
[0014] In the above technical solution, the piston rod is fixed to the swing arm mounting plate through a fisheye joint. The fisheye joint has a ball joint inside, which allows the cylinder to swing within a certain range. The swing arm mounting plate is provided with a slide rail or hinge connector, which allows the swing arm mounting plate to swing along the optical axis within a certain range.
[0015] In the above technical solution, the take-up rubber pressure roller is provided with deep groove ball bearings at both ends, and the deep groove ball bearings are rotatably connected to the first pressure roller swing arm and the second pressure roller swing arm respectively.
[0016] The automatic winding pressure roller structure described in the above technical solution further includes a fixing component, which includes a flange bearing, a first pressure roller assembly fixing seat, and a second pressure roller assembly fixing seat, wherein...
[0017] The other ends of the first cylinder and the second cylinder are fixedly connected to the flange bearing. The first pressure roller assembly fixing seat and the second pressure roller assembly fixing seat are sleeved on the flange bearing through the top through hole, which is used to fix the pressure roller assembly on the vertical plate reinforcing beam of the primer coating machine turret.
[0018] The technical means adopted by this utility model to solve its technical problem is: a primer coating machine, the improvement of which includes an automatic winding pressure roller structure as described above, and further includes:
[0019] The roll motor encoder is synchronously rotated with the roll motor of the primer coating machine via a shaft connection or gear transmission. The roll motor encoder is equipped with a pressure sensor to detect the rotation speed of the roll motor and, in combination with the preset system value and the rotation speed data output by the roll motor encoder, calculates the roll diameter of the substrate in real time.
[0020] An electric proportional valve is connected to a pressure sensor via a signal line. The electric proportional valve adjusts the output pressure according to the deviation between the preset pressure value and the actual pressure value to maintain a constant pressure value between the take-up rubber roller and the substrate.
[0021] An automatic roll changing assembly is connected to a standard cylinder via an air pipeline and a solenoid valve. It is used to automatically cut the substrate during the roll changing process and to drive the take-up rubber roller to press it to the position of the new roll when the new roll begins to be wound.
[0022] The beneficial effects of this utility model are:
[0023] This invention places the take-up adhesive pressure roller after the contact point where the substrate enters the roll. When the automatic roll changing assembly automatically cuts the substrate, it ensures that there is a 50-100mm gap between the double-sided adhesive bonding point and the cut point of the substrate. This gap is effectively pressed and contacted by the take-up adhesive pressure roller, thereby smoothing the bottom substrate in contact with the roll, significantly improving the bottom take-up effect and reducing bottom wrinkles. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of an automatic winding pressure roller structure shown in an embodiment of the present invention;
[0025] Figure 2 This is another schematic diagram illustrating an automatic winding pressure roller structure according to an embodiment of the present invention;
[0026] Figure 3 This is another schematic diagram of an automatic winding pressure roller structure shown in an embodiment of the present invention. Detailed Implementation
[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0028] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.
[0029] like Figure 1-3 As shown, this application provides an automatic winding pressure roller structure for a primer coating machine. Addressing the lack of a turret-type winding adhesive pressure roller assembly in existing turret-type winding mechanisms, a pressure roller structure is added at the turret winding point. The automatic winding pressure roller structure includes a pressure roller assembly 1, a drive assembly 2, a winding adhesive pressure roller 13, and a swing arm mounting plate 25.
[0030] The pressure roller assembly 1 is mounted on the turret and is symmetrically connected to both ends of the take-up rubber pressure roller 13 via a first pressure roller swing arm 11 and a second pressure roller swing arm 12, for applying uniform pressure to the material during the winding process; the other ends of the first pressure roller swing arm 11 and the second pressure roller swing arm 12 are connected to the drive assembly 2 via an adjustment assembly 3.
[0031] The drive assembly 2 includes a first cylinder 21 and a second cylinder 22. One end of the first cylinder 21 and the second cylinder 22 is fixed to the flange bearing 41 by a cylinder fixing pin 23, and the other end is connected to the swing arm mounting plate 25 by a piston rod 24. The swing arm mounting plate 25 can swing along the optical axis 34 to provide the swing driving force for the pressure roller assembly. The other end of the swing arm mounting plate 25 is mounted on the pressure roller fixing seat 27 by a rotating shaft 26. The pressure roller fixing seat 27 is mounted on the primer coating machine.
[0032] In one possible implementation, the piston rod 24 is fixed to the swing arm mounting plate 25 via a spherical joint 28, the spherical joint 28 having a ball joint inside to allow the cylinder to swing within a certain range. Optionally, the spherical joint 28 is fixed to the swing arm mounting plate 25 by a threaded connection or a pin connection to ensure that the cylinder remains stable during swinging; the swing arm mounting plate 25 is provided with a slide rail or hinge connector to allow the swing arm mounting plate 25 to swing along the optical axis 34 within a certain range.
[0033] In one possible implementation, the adjustment assembly 3 includes a pad 31, a roller fixing block 32, a lead screw knob 33, and an optical axis 34.
[0034] The first pressure roller swing arm 11 and the second pressure roller swing arm 12 are connected to one end of the roller fixing block 32 via a pad 31, and the positions of the pad 31 and the roller fixing block 32 are finely adjusted by a screw knob 33; the other end of the roller fixing block 32 has a through hole, and it is sleeved on the optical shaft 34 through the through hole, and the two ends of the optical shaft 34 are connected to the swing arm mounting plate 24 to achieve a fixed connection.
[0035] Optionally, the pad 31 is fixed to one end of the roller fixing block 32 by bolt connection. The bolt passes through the reserved holes on the pad 31 and the roller fixing block 32 and is tightened with a nut. An elastic washer is provided between the bolt and the nut to prevent loosening and vibration.
[0036] In one possible implementation, the take-up rubber pressure roller 13 is provided with deep groove ball bearings 14 at both ends, and the deep groove ball bearings 14 are rotatably connected to the first pressure roller swing arm 11 and the second pressure roller swing arm 12 respectively.
[0037] The inner ring of the deep groove ball bearing 14 is connected to the bearing housings preset on the first pressure roller swing arm 11 and the second pressure roller swing arm 12 via the bearing. The bearing housing is provided with a lubrication oil channel to ensure the lubrication of the bearing and reduce wear. At the same time, a locking device (such as a lock nut or snap ring) is provided on the outside of the bearing housing to prevent the bearing from falling off during high-speed rotation.
[0038] In one possible implementation, the automatic winding pressure roller structure further includes a fixing component 4, which comprises a flange bearing 41, a first pressure roller assembly fixing seat 42, and a second pressure roller assembly fixing seat 43, wherein...
[0039] The other ends of the first cylinder 21 and the second cylinder 22 are fixedly connected to the flange bearing 41. The first pressure roller assembly fixing seat 42 and the second pressure roller assembly fixing seat 43 are sleeved on the flange bearing 41 through the top through hole, which is used to fix the pressure roller assembly 1 on the vertical plate reinforcing beam A of the primer coating machine turret, so as to ensure the stability and reliability of the pressure roller assembly 1 during operation.
[0040] Optionally, the outer ring of the flange bearing 41 is fixed in a preset hole on the first pressure roller assembly fixing seat 42 and the second pressure roller assembly fixing seat 43 by interference fit or press fit; the first pressure roller assembly fixing seat 42 and the second pressure roller assembly fixing seat 43 are provided with locking devices (such as locking rings or bolts) to ensure that the bearing will not fall off during high-speed rotation; at the same time, the fixing seat may be provided with lubricating oil passages to ensure lubrication of the bearing and reduce wear.
[0041] The first pressure roller assembly fixing seat 42 and the second pressure roller assembly fixing seat 43 are stably connected to the vertical plate reinforcing beam of the turret by bolts or other fasteners; the connection can be optionally provided with reinforcing ribs or pads to improve the strength and stability of the connection.
[0042] Through the above embodiments, this invention addresses the problem of horizontal lines caused by unstable tension, thermal expansion and contraction of the substrate and slurry, and non-parallelism of the rollers during the winding process. By using the pressing and smoothing action of the winding rubber roller, these horizontal lines are effectively eliminated, improving the flatness and aesthetics of the roll. When the substrate enters the roll, the pressing operation squeezes out any air bubbles that may be introduced during the winding process, thereby avoiding bulging caused by air bubbles and further improving the quality of the roll.
[0043] In summary, this utility model effectively solves key problems such as bottom wrinkles, roll tightness, cross lines, bulges, and parallelism adjustment during the roll winding process through a series of innovative technical solutions, significantly improving the quality of the roll and production efficiency.
[0044] In one possible implementation, this application also provides a primer coating machine, including the aforementioned automatic winding pressure roller structure, and further comprising:
[0045] The roll motor encoder is synchronously rotated with the roll motor of the primer coating machine via a shaft connection or gear transmission. The roll motor encoder is equipped with a pressure sensor to detect the rotation speed of the roll motor and, in combination with the preset system value and the rotation speed data output by the roll motor encoder, calculates the roll diameter of the substrate in real time.
[0046] An electric proportional valve is connected to a pressure sensor via a signal line. The electric proportional valve adjusts the output pressure according to the deviation between the preset pressure value and the actual pressure value to maintain a constant pressure value between the take-up rubber roller and the substrate.
[0047] An automatic roll changing assembly is connected to a standard cylinder via air pipes and control elements such as solenoid valves. It is used to automatically cut the substrate during the roll changing process and to drive the take-up rubber roller to press it to the position of the new roll when the new roll begins to be wound.
[0048] In the primer coating machine described above, during automatic winding, the encoder on the turret of the primer coating machine detects the rotation speed of the roll motor. The real-time roll diameter is inferred by the value set on the system and the rotation speed output by the encoder. For different roll diameters, the rated pressure is accurately output by the electric proportional valve to maintain the pressure value of the pressure roller on the roll material.
[0049] In one possible implementation, the primer coating machine also includes an angle and pressure coordinated control system. When the substrate is wound to a preset value, the roll change procedure is initiated to reduce the output of the standard cylinder. At the same time, the turret monitors the flip angle in real time and adjusts the output pressure of the electro-proportional valve according to the flip angle to ensure that the pressure of the winding adhesive roller on the substrate is stable. After the roll change is completed, the substrate is cut again by the cutting mechanism, marking the end of the current substrate winding cycle and preparing for the unloading operation.
[0050] In one exemplary embodiment, the angle and pressure coordinated control system calculates the pressure change requirements during the turret flipping process using an algorithm and adjusts the output of the electro-proportional valve in real time to ensure pressure stability.
[0051] Specific actions: When the roll change is started, the cutting mechanism automatically cuts the substrate, and the substrate is transferred to a new roll for winding. The winding rubber pressure roller is pushed by the cylinder to press into the position of the roll. As the roll diameter increases, the output force of the cylinder gradually increases under the control of the electric proportional valve to ensure that the action is consistent with the pressure of the roll. When the roll material on the roll is wound to the preset value, the roll change program is started, the cylinder output force decreases, the turret detects the rotation angle in real time, and the pressure of the winding rubber pressure roller is kept stable according to the different pressures of the cylinder. After the turret is horizontal, the cutter cuts the substrate, and the roll material is completed and ready for unloading.
[0052] The beneficial effects of this utility model brought about by the above embodiments include:
[0053] ① When the pressure roller assembly presses the roll material, the cylinder extension pressure is precisely controlled by an electric proportional valve to ensure that the pressure of the pressure rollers of different roll diameters reaches the pre-design value;
[0054] ② The pressure roller assembly is installed in the turret structure of the turret-type automatic take-up and unwinding machine. The compact structure ensures that the pressure roller assembly can be finely adjusted (back and forth and rotated), which facilitates the parallelism adjustment of the take-up rubber pressure roller and the whole machine and improves the debugging efficiency.
[0055] ③ It can continue to work from the empty drum until winding is complete after the roll change is completed. It has a wide range of applications and can handle roll diameters of φ173-650mm.
[0056] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.
Claims
1. An automatic winding pressure roller structure, applied in a primer coating machine, characterized in that, include: The components include a pressure roller assembly, a drive assembly, a take-up rubber pressure roller, and a swing arm mounting plate. The pressure roller assembly is mounted on the turret and is symmetrically connected to both ends of the take-up rubber pressure roller via a first pressure roller swing arm and a second pressure roller swing arm, for applying uniform pressure to the material during the winding process; the other ends of the first pressure roller swing arm and the second pressure roller swing arm are connected to the drive assembly via an adjustment assembly. The drive assembly includes a first cylinder and a second cylinder. One end of the first cylinder and the second cylinder is fixed to a flange bearing by a cylinder fixing pin, and the other end is connected to the swing arm mounting plate by a piston rod. The swing arm mounting plate can swing around the optical axis to provide the swing driving force for the pressure roller assembly. The other end of the swing arm mounting plate is mounted on the pressure roller fixing seat by a rotating shaft. The pressure roller fixing seat is mounted on the primer coating machine.
2. The automatic winding pressure roller structure according to claim 1, characterized in that, The adjusting assembly includes a pad and a roller fixing block, wherein... The first pressure roller swing arm and the second pressure roller swing arm are connected to one end of the idler roller fixing block through a pad block. The other end of the idler roller fixing block has a through hole, and the roller is sleeved on the optical axis through the through hole.
3. The automatic winding pressure roller structure according to claim 2, characterized in that, The pad is fixed to one end of the roller fixing block by bolt connection. The bolt passes through the reserved holes on the pad and the roller fixing block and is tightened with nuts. An elastic washer is provided between the bolt and the nut.
4. The automatic winding pressure roller structure according to claim 1, characterized in that, The piston rod is fixed to the swing arm mounting plate via a fisheye joint. The fisheye joint has a ball joint inside, which allows the cylinder to swing within a certain range. The swing arm mounting plate is provided with a slide rail or hinge connector, which allows the swing arm mounting plate to swing along the optical axis within a certain range.
5. The automatic winding pressure roller structure according to claim 1, characterized in that, The take-up rubber pressure roller is equipped with deep groove ball bearings at both ends, which are rotatably connected to the first pressure roller swing arm and the second pressure roller swing arm, respectively.
6. The automatic winding pressure roller structure according to claim 1, characterized in that, The automatic winding pressure roller structure further includes a fixing component, which comprises a flange bearing, a first pressure roller assembly fixing seat, and a second pressure roller assembly fixing seat. The other ends of the first cylinder and the second cylinder are fixedly connected to the flange bearing. The first pressure roller assembly fixing seat and the second pressure roller assembly fixing seat are sleeved on the flange bearing through the top through hole, which is used to fix the pressure roller assembly on the vertical plate reinforcing beam of the primer coating machine turret.
7. The automatic winding pressure roller structure according to claim 6, characterized in that, The outer ring of the flange bearing is fixed in a preset hole on the first and second pressure roller assembly fixing seats by interference fit or press fit; the first and second pressure roller assembly fixing seats are provided with locking devices; the first and second pressure roller assembly fixing seats are also provided with lubricating oil passages.
8. A primer coating machine, characterized in that, Including an automatic winding pressure roller structure as described in any one of claims 1-7, further comprising: The roll motor encoder is synchronously rotated with the roll motor of the primer coating machine via a shaft connection or gear transmission. The roll motor encoder is equipped with a pressure sensor to detect the rotation speed of the roll motor and, in combination with the preset system value and the rotation speed data output by the roll motor encoder, calculates the roll diameter of the substrate in real time. An electric proportional valve is connected to a pressure sensor via a signal line. The electric proportional valve adjusts the output pressure according to the deviation between the preset pressure value and the actual pressure value to maintain a constant pressure value between the take-up rubber roller and the substrate. An automatic roll changing assembly is connected to a standard cylinder via an air pipeline and a solenoid valve. It is used to automatically cut the substrate during the roll changing process and to drive the take-up rubber roller to press it to the position of the new roll when the new roll begins to be wound.