A scraper bolt device that is easy to disassemble

Abstract

The utility model relates to battery manufacturing technical field especially is related to the installation design of scraper in rolling process, a scraper bolt device convenient to dismantle, include: bolt, symmetry sets up in the both ends of scraper mechanism length direction, inserts into the axle hole that scraper mechanism was equipped with, the waist shape hole is set up in one side of scraper mechanism width direction, include: the chute that extends along scraper mechanism length direction and the through -hole that communicates with the both ends of chute, fixed screw, passes through the waist shape hole and forms the screw thread connection with the side wall of bolt, when the fixed screw is loosened, the bolt moves along its axial direction, is used for relieving the locking state of bolt and axle hole.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, and in particular to the installation design of the scraper in the rolling process. Background Technology

[0002] In the rolling process of battery production, the scraper mechanism is crucial, playing a decisive role in the quality of battery electrodes. The scraper mechanism is key to ensuring rolling quality. Taking the negative electrode rolling process as an example, the scraper mechanism on the main roller plays a vital role. During rolling, due to material characteristics and the production environment, impurities and excess material easily remain on the roller surface. If not cleaned in time, this will interfere with subsequent processes, causing the battery electrodes to fail to meet standards for thickness and flatness. The core function of the scraper mechanism is to accurately remove these residues, maintaining a clean and flat roller surface, laying the foundation for a high-quality rolling process. To achieve the best cleaning effect, the scraper needs to be replaced regularly. As production time increases, the scraper's performance degrades due to friction and impurity removal; regular replacement ensures its proper operation and guarantees the quality of the battery electrodes.

[0003] Traditional scraper replacement methods primarily employ a bolted connection structure, using multiple sets of fasteners to secure the scraper to the mounting mechanism. Disassembly requires tools to loosen each bolt individually, releasing the mechanical constraint between the scraper and the mounting body. After replacement, the bolts are tightened in reverse for reassembly. Existing patented technology proposes an automated disassembly solution. This solution uses a cylinder piston rod to retract, reducing the blade clamping force. Combined with a synchronous motor driving the scraper mounting plate to rotate to a preset angle, this creates a multi-component linkage mechanism that exposes the blade's operating space, ultimately enabling blade removal and replacement.

[0004] However, the drawback of traditional bolted connections is that the operation relies on manual, repeated tightening of multiple fasteners, which is not only time-consuming and labor-intensive, but also prone to wear and tear or preload reduction due to friction between the threads over long-term use, posing a risk of loosening. While existing patented technologies achieve automation, the cylinder pressure adjustment and motor rotation require strict coordination, and the cumulative error of the mechanical transmission chain may affect the positioning accuracy of the scraper mounting plate. At the same time, the multi-component linkage requires high precision in equipment debugging, lacks ease of operation in confined working spaces, and the automation process increases system complexity and maintenance costs. Utility Model Content

[0005] To overcome the shortcomings of the prior art, a scraper pin device that is easy to disassemble is provided.

[0006] This utility model is achieved through the following technical solution: a scraper pin device that is easy to disassemble, comprising: a pin, symmetrically arranged at both ends of the scraper mechanism along its length, inserted into the shaft hole provided in the scraper mechanism; a waist-shaped hole, provided on one side of the scraper mechanism along its width, including: a groove extending along the length of the scraper mechanism and a through hole communicating with both ends of the groove; a fixing screw, passing through the waist-shaped hole and forming a threaded connection with the side wall of the pin; when the fixing screw is loosened, the pin moves along its axial direction to release the locking state between the pin and the shaft hole.

[0007] In a preferred embodiment of this utility model, the side wall of the pin is provided with a recessed stepped surface, and a threaded hole that mates with the fixing screw is vertically passed through the stepped surface.

[0008] In a preferred embodiment of the present invention, the fixing screw includes a screw rod and a nut; the screw rod passes through a groove, and the nut is confined within a through hole and screwed into a threaded hole.

[0009] In a preferred embodiment of this utility model, the diameter of the through hole is greater than the width of the groove.

[0010] In a preferred embodiment of this utility model, the through hole includes two interconnected layers of a first countersunk hole and a second countersunk hole. The first countersunk hole is used to accommodate the screw part; the second countersunk hole is located on the surface of the first countersunk hole and has a larger diameter than the first countersunk hole, and is used to fix the nut part.

[0011] In a preferred embodiment of the present invention, the nut part includes a nut and a boss, the boss is assembled at the connection between the screw part and the nut, and the boss is engaged with the second countersunk hole.

[0012] In a preferred embodiment of this utility model, the end of the pin is provided with a first marking structure, and the two ends of the scraper mechanism along its length are provided with a second marking structure; when the first marking structure and the second marking structure are aligned, the threaded hole on the stepped surface is connected to the waist-shaped hole.

[0013] In a preferred embodiment of this utility model, the first marking structure is provided with a direction marking structure on the side of the step surface.

[0014] In a preferred embodiment of the present invention, the mating surface between the pin and the shaft hole is provided with at least one annular oil reservoir, and the annular oil reservoir is filled with solid lubricant.

[0015] In a preferred embodiment of this utility model, the end of the pin is provided with a chamfer structure, and when the pin moves axially, the chamfer structure forms a gradual contact with the shaft hole.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] An easily disassembled scraper pin device significantly reduces scraper replacement time and improves maintenance efficiency through its axial locking and screw-out release design, making it particularly suitable for continuous production scenarios with high-frequency tool changes. The purely mechanical structure avoids the risk of thread wear, and the guiding function of the oblong hole groove ensures precise pin movement, resulting in higher connection stability over long-term use.

[0018] Furthermore, the stepped surface provides stable, reliable, and easily machined threaded connection points. This facilitates the installation of fixing screws and avoids problems such as uneven stress or insufficient thread strength caused by directly threading on a cylindrical surface.

[0019] Furthermore, the screw and slide groove work together to restrict pin displacement, and the nut limiting design prevents the screw from falling off. Locking and releasing the pin can be completed by operating from one side, significantly improving ease of operation.

[0020] Furthermore, the diameter of the through hole is larger than the width of the groove, forming a stepped hole structure. This prevents the fixing screw from getting stuck during movement, ensures smooth movement of the pin, and optimizes the compactness of the structure.

[0021] Furthermore, the double countersunk hole structure ensures that the nut is confined to the surface of the scraper mechanism, and the layered design facilitates quick screw alignment and installation, improving assembly efficiency.

[0022] Furthermore, the boss engagement design prevents screws from loosening due to vibration, improving locking reliability. At the same time, the boss acts as a mistake-proof structure, ensuring that screws can only be installed at the correct angle.

[0023] Furthermore, the marking alignment mechanism eliminates installation blind spots, ensures that the pin is in place at once, avoids damage to the shaft and hole mating surfaces caused by repeated adjustments, and extends the equipment's lifespan.

[0024] Furthermore, directional markings reduce the risk of operational misjudgment, especially in confined spaces or low-light environments, thereby improving the safety and efficiency of disassembly.

[0025] Furthermore, solid lubricants reduce the coefficient of friction, lower the resistance to pin movement, and avoid the problem of liquid lubricant loss, thus extending the lubrication cycle and reducing the frequency of maintenance.

[0026] Furthermore, the chamfered design compensates for the coaxiality error between the pin and the shaft hole, avoiding scratches or jamming caused by hard contact. It is especially suitable for frequent disassembly and assembly scenarios, improving the assembly fault tolerance rate.

[0027] Other features and advantages of this utility model will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description

[0028] The present invention will be further described below with reference to the accompanying drawings:

[0029] Figure 1 This is an installation diagram of a scraper pin device that is easy to disassemble according to the present invention;

[0030] Figure 2 This is a cross-sectional schematic diagram of the scraper pin device of this utility model;

[0031] Figure 3 This is a schematic diagram of the installation of the fixing screw of this utility model;

[0032] Figure 4 This is an enlarged structural schematic diagram of the waist-shaped hole of this utility model;

[0033] Figure 5 This is a schematic diagram of the structure of the pin of this utility model;

[0034] Figure 6 This is a side view of the scraper mechanism of this utility model.

[0035] Figure 7 This is an enlarged cross-sectional structural diagram of the fixing screw of this utility model;

[0036] The annotations in the attached figures are explained as follows:

[0037] 1. Pin, 2. Scraper mechanism, 3. Waist-shaped hole, 4. Fixing screw, 5. Cylinder push block, 20. Shaft hole, 31. Slide groove, 32. Through hole, 11. Stepped surface, 12. Threaded hole, 41. Screw part, 42. Nut part, 321. First countersunk hole, 322. Second countersunk hole, 421. Nut, 422. Boss, 13. First marking structure, 21. Second marking structure, 14. Direction marking structure, 15. Annular oil reservoir, 6. Scraper connecting roller, 7. Main roller. Detailed Implementation

[0038] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.

[0039] In the following description, terms such as “inner,” “outer,” “upper,” “lower,” “left,” and “right” are used only to facilitate the description of the embodiments and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0040] like Figures 1 to 7As shown, this embodiment provides a detachable scraper pin device, which is mounted on the main roller 7 and connected to the main roller 7 via a scraper connecting roller 6. This allows the scraper on the scraper mechanism 2 to be tangential to the main roller 7, ensuring the scraper is in close contact with the main roller 7 for cleaning. This makes the main roller 7 cleaner, significantly reducing defects such as foil leakage, dents, and scratches caused by particles on the roller surface, thereby improving product quality and yield. The scraper mechanism 2 uses the scraper pin device to replace the scraper. The scraper pin device has a simple structure and can be operated by a single person without the need for other personnel, simplifying the disassembly process and improving operational efficiency.

[0041] The scraper pin device includes a scraper mechanism 2 and pins 1 symmetrically arranged at both ends along its length. Shaft holes 20 are formed at both ends of the scraper mechanism 2, and the pins 1 are inserted into the shaft holes 20 for axial positioning. A waist-shaped hole 3 is formed on one side of the scraper mechanism 2 in the width direction, which consists of a groove 31 extending along the length of the scraper mechanism 2 and through holes 32 communicating with both ends of the groove 31. A fixing screw 4 passes through the waist-shaped hole 3 and is screwed into a threaded hole 12 on the side wall of the pin 1, with the nut portion 42 confined within the through hole 32.

[0042] The operation of this device is as follows: When disassembling the scraper, loosen the fixing screw 4, the screw part 41 slides along the slide groove 31, driving the pin 1 to move axially and disengage from the locked state of the shaft hole 20. At this time, the pin 1 can be quickly pulled out and the scraper can be replaced. When installing the scraper, insert the pin 1 into the shaft hole 20 of the new scraper, tighten the fixing screw 4 in the opposite direction, the screw part 41 and the slide groove 31 cooperate to restrict the rotation of the pin 1, and the nut part 42 presses against the end face of the through hole 32 to complete the locking.

[0043] This device, through the axial locking design of the pin 1 and the shaft hole 20, combined with the instant release function of the fixing screw 4, shortens the scraper replacement time and significantly improves maintenance efficiency, making it particularly suitable for continuous production scenarios with high-frequency tool changes. Secondly, the purely mechanical locking structure avoids the problem of preload reduction caused by thread wear, while the guiding effect of the groove 31 in the oblong hole 3 ensures precise and controllable movement trajectory of the pin 1, resulting in higher connection reliability during long-term use.

[0044] Furthermore, the side wall of the pin 1 is provided with a recessed stepped surface 11, and a threaded hole 12 is vertically formed on the stepped surface 11. The screw portion 41 of the fixing screw 4 passes through the sliding groove 31 and is screwed into the threaded hole 12. The through hole 32 is designed as a double-layer countersunk hole structure, including a first countersunk hole 321 for accommodating the screw portion 41 and a second countersunk hole 322 for fixing the nut portion 42. The nut portion 42 is composed of a nut 421 and a boss 422, and the boss 422 is fitted into the second countersunk hole 322.

[0045] The pin 1 can also be connected to the cylinder push block 5, and the pin 1 can be driven by the motor to move within the shaft hole 20, which reduces the difficulty of operation and improves the automation of the device.

[0046] Example 2: A first marking structure 13 is provided at the end of the pin 1, and a second marking structure 21 is provided at both ends of the scraper mechanism 2. When the first marking structure 13 and the second marking structure 21 are aligned, the threaded hole 12 on the stepped surface 11 communicates with the oblong hole 3. A direction marking structure 14 is also provided on the side of the first marking structure 13. In addition, an annular oil reservoir 15 is opened on the mating surface of the pin 1 and the shaft hole 20 and filled with solid lubricant, and a chamfer structure is provided at the end. The operation process is as follows: when aligning the markings, the first marking structure 13 and the second marking structure 21 are aligned to ensure that the threaded hole 12 communicates with the oblong hole 3, avoiding repeated adjustments; in terms of lubrication and guidance, the chamfer structure makes the pin 1 and the shaft hole 20 gradually contact each other, compensating for coaxiality error; the solid lubricant reduces frictional resistance and extends the lubrication cycle.

[0047] In the rolling process of the battery production line, the surface of the main roller needs to be cleaned regularly due to material residue. After adopting this device, the scraper replacement process is as follows: During the disassembly stage, loosen the fixing screw 4, and the pin 1 moves axially along the waist-shaped hole 3 and disengages from the shaft hole 20. The lock can be released by a single-sided operation, which shortens the time. During the installation stage, insert the new scraper and align the marking structures 13 and 21, tighten the fixing screw 4, and the boss 422 engages with the second countersunk hole 322 to ensure reliable locking.

[0048] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the content described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

Claims

1. A scraper pin device that is easy to disassemble, characterized in that, include: Pins (1) are symmetrically arranged at both ends of the scraper mechanism (2) along its length and are inserted into the shaft holes (20) provided in the scraper mechanism (2); The waist-shaped hole (3) is provided on one side of the width direction of the scraper mechanism (2), including: a groove (31) extending along the length direction of the scraper mechanism (2) and a through hole (32) communicating with both ends of the groove (31). The fixing screw (4) passes through the waist-shaped hole (3) and forms a threaded connection with the side wall of the pin (1); When the fixing screw (4) is loosened, the pin (1) moves along its axial direction to release the locking state between the pin (1) and the shaft hole (20).

2. The easily detachable scraper pin device according to claim 1, characterized in that, The side wall of the pin (1) is provided with a recessed stepped surface (11), and a threaded hole (12) that mates with the fixing screw (4) is vertically inserted on the stepped surface (11).

3. The easily detachable scraper pin device according to claim 2, characterized in that, The fixing screw (4) includes a screw part (41) and a nut part (42); the screw part (41) passes through the groove (31), and the nut part (42) is confined in the through hole (32) and screwed into the threaded hole (12).

4. A detachable scraper pin device according to claim 1 or 3, characterized in that, The diameter of the through hole (32) is greater than the width of the groove (31).

5. The easily detachable scraper pin device according to claim 3, characterized in that, The through hole (32) includes a first countersunk hole (321) and a second countersunk hole (322) that are connected in two layers. The first countersunk hole (321) is used to accommodate the screw part (41). The second countersunk hole (322) is located on the surface of the first countersunk hole (321) and has a larger diameter than the first countersunk hole (321). It is used to fix the nut part (42).

6. The easily detachable scraper pin device according to claim 3, characterized in that, The nut portion (42) includes a nut (421) and a boss (422). The boss (422) is assembled at the connection between the screw portion (41) and the nut (421). The boss (422) (43) is engaged with the second countersunk hole (322).

7. The easily detachable scraper pin device according to claim 2, characterized in that, The end of the pin (1) is provided with a first marking structure (13), and the scraper mechanism (2) is provided with a second marking structure (21) at both ends along its length direction; when the first marking structure (13) and the second marking structure (21) are aligned, the threaded hole (12) on the stepped surface (11) is connected to the waist-shaped hole (3).

8. The easily detachable scraper pin device according to claim 7, characterized in that, The first marking structure (13) has a directional marking structure (14) on the side near the step surface (11).

9. The easily detachable scraper pin device according to claim 1, characterized in that, The mating surface between the pin (1) and the shaft hole (20) is provided with at least one annular oil reservoir (15), and the annular oil reservoir (15) is filled with solid lubricant.

10. A scraper pin device for easy disassembly according to claim 2, characterized in that, The pin (1) has a chamfered structure at its end. When the pin (1) moves along the axial direction, the chamfered structure makes a gradual contact with the shaft hole (20).

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