Automatic threading device for a slitting machine

The automatic threading device, driven by a motor-driven gearbox and sprocket system, solves the safety hazards and low efficiency of traditional manual threading, achieving stable and efficient operation of aluminum foil slitting and high-quality material winding.

CN224449682UActive Publication Date: 2026-07-03SHANGHAI SUNHO ALUMINIUM FOIL CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI SUNHO ALUMINIUM FOIL CO LTD
Filing Date
2025-07-01
Publication Date
2026-07-03

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Abstract

This utility model relates to the field of aluminum foil slitting technology and discloses an automatic threading device for a slitting machine, including a motor and a gearbox located at the front end of the motor, as well as sprocket two and sprocket three. A rotating shaft is rotatably mounted on the outer wall of the gearbox, and sprocket one is fixedly mounted on the end of the rotating shaft away from the gearbox. A chain is meshed with the outer wall of sprocket one. This automatic threading device for a slitting machine, through the cooperation of the motor, gearbox, rotating shaft, sprocket one, chain, sprocket two, and sprocket three, can move the pre-winding roller from sprocket two to sprocket three, enabling automatic threading of the pre-winding roller along a designed path. This avoids the safety hazards of manual threading, which is inefficient and prone to material waste due to operational errors. It improves work efficiency and has high practicality. The design of two sets of sprocket one, chain, sprocket two, and sprocket three ensures the parallelism of the pre-winding roller during travel and the straightness of the aluminum foil passing through each roller system, making it highly practical.
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Description

Technical Field

[0001] This utility model relates to the field of aluminum foil slitting technology, specifically to an automatic tape threading device for a slitting machine. Background Technology

[0002] The automatic threading device for slitting machines is a core piece of equipment for improving the efficiency and precision of aluminum foil slitting. Powered by a motor, the device uses a precision transmission system comprised of a gearbox, sprockets, and chains to ensure a stable and efficient threading process. The symmetrically distributed transmission components ensure even force distribution and reduce equipment wear. The connection between the pre-winding roller and the sprocket employs a guiding, plug-in, and snap-fit ​​structure for quick assembly and disassembly and precise positioning, facilitating maintenance and replacement. During aluminum foil slitting, the automatic threading device significantly reduces manual threading time and labor intensity, while also preventing threading failures due to human error. This ensures continuous and stable aluminum foil slitting, significantly improving production efficiency.

[0003] In existing technologies, traditional threading requires operators to manually guide aluminum foil through complex paths such as guide rollers, tension rollers, and slitting blades. This poses safety hazards due to deep pits or high-altitude operations, is inefficient, and is prone to material waste due to operational errors. Furthermore, manual threading can easily cause aluminum foil to shift, affecting the flatness of the slitting end face and requiring repeated adjustments. In high-speed slitting scenarios, manual threading is difficult to match the equipment's operating speed, resulting in long downtime. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide an automatic threading device for slitting machines. It can effectively solve the problems of traditional threading, which requires operators to manually guide aluminum foil through complex paths such as guide rollers, tension rollers, and slitting blades. This is dangerous due to deep pits or high-altitude operations, low efficiency, and easy material waste caused by operational errors. In addition, manual threading is prone to aluminum foil misalignment, affecting the flatness of the slitting end face and requiring repeated adjustments. In high-speed slitting scenarios, manual threading is difficult to match the equipment operating speed, resulting in long standby and downtime.

[0005] The technical solution adopted by this utility model is: an automatic belt threading device for a slitting machine, including a motor and a gearbox located at the front end of the motor, as well as sprocket two and sprocket three. A rotating shaft is rotatably mounted on the outer wall of the gearbox. Sprocket one is fixedly mounted on the end of the rotating shaft away from the gearbox. A chain is meshed with the outer wall of sprocket one. A pre-winding roller is provided on the outer wall of sprocket two. A connecting component is provided between the pre-winding roller and sprocket two.

[0006] Preferably, the outer wall of the gearbox is fixed with a base, and the rotating shaft is rotatably connected to the base.

[0007] Through the above technical solution, the base can provide certain support for the rotating shaft during the operation of the device, effectively reducing the deformation and shaking of the rotating shaft, enhancing the stability of the rotating shaft during rotation, increasing the service life of the rotating shaft, and reducing transmission loss and failure risk caused by the instability of the rotating shaft.

[0008] Preferably, the second sprocket and the chain are meshed together, and the third sprocket and the chain are meshed together.

[0009] With the above technical solution, the staff starts the motor, and the output shaft of the motor drives the rotating shaft to rotate through the gearbox. The rotating shaft drives the first sprocket to rotate, and the first sprocket drives the second and third sprockets to rotate through the chain. This can move the pre-winding roller from the second sprocket to the third sprocket, so that the pre-winding roller can be automatically threaded according to the designed path. This can avoid the safety hazards caused by manual threading, which is not only inefficient but also prone to material waste due to operational errors. It improves work efficiency and has high practicality.

[0010] Preferably, the first sprocket, chain, second sprocket, and third sprocket are provided in two identical sets, and the two sets of the first sprocket, chain, second sprocket, and third sprocket are symmetrically distributed about the center line of the motor.

[0011] The above technical solution, through the design of two sets of sprockets, chains, sprockets, and sprockets, ensures the parallelism of the pre-winding rollers during travel and the straightness of the aluminum foil passing through each roller system, making it highly practical.

[0012] Preferably, the connecting assembly includes a first fixing block, a guide groove, a slot, a slide groove, a limiting block, a buckle, a second fixing block, a guide block, an insert block, a limiting groove, and a slot. The first fixing block is fixedly installed on the outer wall of the chain. The first fixing block has a guide groove, a slot, and a slide groove at one end near the pre-winding roller. The inner wall of the slide groove is slidably connected to a limiting block. The outer wall of the limiting block is fixedly installed with a buckle. The second fixing block is fixedly installed on one end of the pre-winding roller near the first fixing block. The second fixing block has a guide block and an insert block at one end near the first fixing block. The second fixing block has a limiting groove and a slot at one end near the first fixing block. The first fixing block and the second fixing block are adapted to each other. The guide block and the guide groove are plugged in, and the insert block and the slot are plugged in.

[0013] With the above technical solution, the staff inserts the guide block into the guide groove and the insert block into the slot, which can realize the rapid positioning of the pre-winding roller. Without complicated calibration operations, the relative positions of the fixed block one and the fixed block two can be ensured to be accurate, thereby improving installation efficiency, reducing labor and time costs, and making it highly practical.

[0014] Preferably, the sliding groove, the limiting groove, and the card slot are interconnected, the limiting block is adapted to the limiting groove, and the buckle is adapted to the card slot.

[0015] With the above technical solution, after the pre-winding roller is quickly positioned, the worker slides the limiting block into the inside of the limiting groove. When the buckle contacts the second fixing block, the buckle deforms. When the limiting block and the second fixing block abut against each other, the buckle returns to its original shape, so that the buckle is inserted into the inside of the slot. This enables the quick connection between the first fixing block and the second fixing block, thereby enabling the quick installation of the pre-winding roller. During use or assembly, it is convenient to quickly disassemble and assemble it.

[0016] Preferably, two identical connecting components are provided, and the two connecting components are symmetrically distributed about the center line of the pre-winding roller.

[0017] The above technical solution, through the design of two connecting components, avoids the pre-winding roller from tilting or deforming due to uneven force. This not only helps to improve the working accuracy and winding quality of the pre-winding roller, but also ensures the neatness and tightness of the aluminum foil winding, and increases the service life of the pre-winding roller, making it highly practical.

[0018] Compared with the prior art, the present invention provides an automatic threading device for a slitting machine, which has the following advantages:

[0019] 1. The automatic tape-threading device of this slitting machine, through the design of the connecting components, can realize the quick connection between fixed block one and fixed block two, thereby enabling the quick installation of the pre-winding roller. During use or assembly, it is easy to quickly disassemble and assemble. The design of the two connecting components avoids the pre-winding roller from tilting or deforming due to uneven force. This not only helps to improve the working accuracy and winding quality of the pre-winding roller, but also ensures the neatness and tightness of the aluminum foil winding, and improves the service life of the pre-winding roller, making it highly practical.

[0020] 2. The automatic threading device of this slitting machine, through the cooperation of motor, gearbox, shaft, sprocket one, chain, sprocket two, and sprocket three, can move the pre-winding roller from sprocket two to sprocket three, realizing automatic threading of the pre-winding roller according to the designed path. It can avoid the safety hazards caused by manual threading, which is not only inefficient but also prone to material waste due to operational errors. It improves work efficiency and has high practicality. The design of two sets of sprocket one, chain, sprocket two, and sprocket three ensures the parallelism of the pre-winding roller during travel and the straightness of the aluminum foil passing through each roller system, making it highly practical. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the installation structure of the connecting component of this utility model;

[0023] Figure 3 This is a schematic diagram of the installation structure of the connecting component of this utility model;

[0024] Figure 4 This is a schematic diagram of the chain installation structure of this utility model;

[0025] Figure 5 This is a side view of the present invention.

[0026] Figure 6 This is a schematic diagram of the planar structure of this utility model;

[0027] Figure 7 This is a schematic diagram of the pre-winding roller installation structure of this utility model.

[0028] The components are as follows: 1. Motor; 2. Gearbox; 3. Shaft; 4. Base; 5. Sprocket 1; 6. Chain; 7. Sprocket 2; 8. Pre-winding roller; 9. Connecting assembly; 901. Fixing block 1; 902. Guide groove; 903. Slot; 904. Slide groove; 905. Limiting block; 906. Buckle; 907. Fixing block 2; 908. Guide block; 909. Insertion block; 910. Limiting groove; 911. Slot; 10. Sprocket 3. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1:

[0031] like Figure 1-7 As shown, the present invention provides an automatic belt threading device for a slitting machine, including a motor 1 and a gearbox 2 located at the front end of the motor 1, as well as a second sprocket 7 and a third sprocket 10. A rotating shaft 3 is rotatably mounted on the outer wall of the gearbox 2. A first sprocket 5 is fixedly mounted on the end of the rotating shaft 3 away from the gearbox 2. A chain 6 is meshed with the outer wall of the first sprocket 5. A pre-winding roller 8 is provided on the outer wall of the second sprocket 7. A connecting component 9 is provided between the pre-winding roller 8 and the second sprocket 7.

[0032] Specifically, a base 4 is fixed to the outer wall of the gearbox 2, and the rotating shaft 3 is rotatably connected to the base 4. The advantage is that during the operation of the device, the base 4 can provide a certain degree of support for the rotating shaft 3, effectively reducing the deformation and shaking of the rotating shaft 3, enhancing the stability of the rotating shaft 3 during rotation, increasing the service life of the rotating shaft 3, and reducing transmission losses and failure risks caused by the instability of the rotating shaft 3.

[0033] Specifically, sprocket 2 (7) and chain 6 are meshed together, as are sprocket 3 (10). The advantage is that when the operator starts motor 1, the output shaft of motor 1 drives shaft 3 to rotate via gearbox 2. The rotation of shaft 3 drives sprocket 1 (5), which in turn drives sprocket 2 (7) and sprocket 3 (10) via chain 6. This allows the pre-winding roller 8 to be moved from sprocket 2 (7) to sprocket 3 (10), enabling automatic threading of the pre-winding roller 8 along the designed path. This avoids the safety hazards associated with manual threading, reduces inefficiency and material waste due to operational errors, improves work efficiency, and is highly practical.

[0034] Specifically, sprocket 5, chain 6, sprocket 7, and sprocket 10 are arranged in two identical sets, symmetrically distributed about the center line of motor 1. The advantage is that this design, with two sets of sprockets, ensures the parallelism of the pre-winding roller 8 during its movement and the straightness of the aluminum foil passing through each roller system, resulting in high practicality.

[0035] Example 2:

[0036] like Figure 2-7 As shown, as an improvement on the previous embodiment, to further facilitate the installation of the pre-winding roller 8, specifically, the connecting assembly 9 includes a fixing block 901, a guide groove 902, a slot 903, a sliding groove 904, a limiting block 905, a buckle 906, a fixing block 907, a guide block 908, an insert block 909, a limiting groove 910, and a slot 911. The fixing block 901 is fixedly installed on the outer wall of the chain 6. The fixing block 901 has a guide groove 902, a slot 903, and a sliding groove 904 at one end near the pre-winding roller 8. The inner wall of the sliding groove 904 is slidably connected. A limiting block 905 is connected to the pre-winding roller 8. A buckle 906 is fixedly installed on the outer wall of the limiting block 905. A second fixing block 907 is fixedly installed at the end of the pre-winding roller 8 near the first fixing block 901. A guide block 908 and an insert block 909 are fixedly installed at the end of the second fixing block 907 near the first fixing block 901. A limiting groove 910 and a slot 911 are formed at the end of the second fixing block 907 near the first fixing block 901. The first fixing block 901 and the second fixing block 907 are compatible. The guide block 908 and the guide groove 902 are inserted into each other, and the insert block 909 and the slot 903 are inserted into each other. The advantage is that by inserting the guide block 908 into the guide groove 902 and simultaneously inserting the insert block 909 into the slot 903, the pre-winding roller 8 can be quickly positioned without complex calibration operations. This ensures accurate relative positioning of the first fixing block 901 and the second fixing block 907, improves installation efficiency, reduces labor and time costs, and has high practicality.

[0037] Specifically, the slide groove 904, the limiting groove 910, and the locking groove 911 are interconnected. The limiting block 905 is adapted to the limiting groove 910, and the latch 906 is adapted to the locking groove 911. The advantage is that after the pre-winding roller 8 is quickly positioned, the operator slides the limiting block 905 into the limiting groove 910. When the latch 906 contacts the second fixing block 907, the latch 906 deforms. When the limiting block 905 abuts against the second fixing block 907, the latch 906 returns to its original shape, allowing the latch 906 to engage with the locking groove 911. This enables a quick connection between the first fixing block 901 and the second fixing block 907, thus facilitating the quick installation of the pre-winding roller 8 and allowing for easy disassembly and assembly during use or assembly.

[0038] Specifically, two identical connecting components 9 are provided, and the two connecting components 9 are symmetrically distributed about the center line of the pre-winding roller 8. The advantage is that the design of two connecting components 9 avoids the pre-winding roller 8 from tilting or deforming due to uneven force. This not only helps to improve the working accuracy and winding quality of the pre-winding roller 8, but also ensures the neatness and tightness of the aluminum foil winding, and extends the service life of the pre-winding roller 8, making it highly practical.

[0039] Working Principle: During installation, the operator inserts guide block 908 into guide groove 902 and inserts insert block 909 into slot 903, enabling rapid positioning of pre-winding roller 8 without complex calibration operations. This ensures accurate relative positioning of fixing block 1 901 and fixing block 2 907, improving installation efficiency and reducing labor and time costs, making it highly practical. After quickly positioning pre-winding roller 8, the operator slides limiting block 905 into limiting groove 910. When buckle 906 contacts fixing block 2 907, buckle 906 deforms. When limiting block 905 abuts against fixing block 2 907, buckle 906 returns to its original shape, allowing buckle 906 to engage with slot 911, achieving rapid connection between fixing block 1 901 and fixing block 2 907, thus enabling rapid installation of pre-winding roller 8. This facilitates quick disassembly and assembly during use or assembly. In use, the operator first connects the external power supply, then inserts aluminum... The foil is wound around the outside of the pre-winding roller 8. Then, the operator starts the motor 1. The output shaft of the motor 1 drives the rotating shaft 3 to rotate through the gearbox 2. The rotating shaft 3 drives the first sprocket 5 to rotate. The first sprocket 5 drives the second sprocket 7 and the third sprocket 10 to rotate through the chain 6. This allows the pre-winding roller 8 to be moved from the second sprocket 7 to the third sprocket 10, enabling the pre-winding roller 8 to be automatically threaded along the designed path. This avoids the safety hazards caused by manual threading, which is not only inefficient but also prone to material waste due to operational errors. It improves work efficiency and has high practicality. The design of the two sets of sprockets 5, chain 6, second sprocket 7, and third sprocket 10 ensures the parallelism of the pre-winding roller 8 during its movement and the straightness of the aluminum foil passing through each roller system. This has high practicality. The design of the two connecting components 9 prevents the pre-winding roller 8 from tilting or deforming due to uneven force. This not only helps to improve the working accuracy and winding quality of the pre-winding roller 8 and ensures the neatness and tightness of the aluminum foil winding, but also extends the service life of the pre-winding roller 8. This has high practicality.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic threading device for a slitting machine, comprising a motor (1) and a gearbox (2) disposed at the front end of the motor (1), as well as a second sprocket (7) and a third sprocket (10), characterized in that: A rotating shaft (3) is rotatably mounted on the outer wall of the gearbox (2). A sprocket (5) is fixedly mounted on the end of the rotating shaft (3) away from the gearbox (2). A chain (6) is meshed with the outer wall of the sprocket (5). A pre-winding roller (8) is provided on the outer wall of the sprocket (7). A connecting assembly (9) is provided between the pre-winding roller (8) and the sprocket (7).

2. The automatic threading device of a slitting machine according to claim 1, characterized in that: The outer wall of the gearbox (2) is fixed with a base (4), and the rotating shaft (3) is rotatably connected to the base (4).

3. The automatic threading device of a slitting machine according to claim 1, characterized in that: The second sprocket (7) is meshed with the chain (6), and the third sprocket (10) is meshed with the chain (6).

4. The automatic threading device of a slitting machine according to claim 1, characterized in that: The first sprocket (5), chain (6), second sprocket (7) and third sprocket (10) are provided in two identical sets, and the two sets of the first sprocket (5), chain (6), second sprocket (7) and third sprocket (10) are symmetrically distributed about the center line of the motor (1).

5. The automatic threading device of a slitting machine according to claim 1, characterized in that: The connecting assembly (9) includes a fixing block one (901), a guide groove (902), a slot (903), a slide groove (904), a limiting block (905), a buckle (906), a fixing block two (907), a guide block (908), an insert block (909), a limiting groove (910), and a slot (911). The outer wall of the chain (6) is fixedly installed with a fixing block one (901). The fixing block one (901) has a guide groove (902), a slot (903), and a slide groove (904) at one end near the pre-winding roller (8). The inner wall of the slide groove (904) is slidably connected to a limiting block (905). The outer wall is fixedly installed with a buckle (906). The pre-rolling roller (8) is fixedly installed with a fixing block two (907) at one end near the fixing block one (901). The fixing block two (907) is fixedly installed with a guide block (908) and an insert block (909) at one end near the fixing block one (901). The fixing block two (907) is provided with a limit groove (910) and a slot (911) at one end near the fixing block one (901). The fixing block one (901) and the fixing block two (907) are compatible. The guide block (908) and the guide groove (902) are plugged in. The insert block (909) and the slot (903) are plugged in.

6. The automatic threading device of a slitting machine according to claim 5, characterized in that: The slide groove (904), the limiting groove (910) and the card slot (911) are connected, the limiting block (905) is adapted to the limiting groove (910), and the buckle (906) is adapted to the card slot (911).

7. The automatic threading device of a slitting machine according to claim 1, characterized in that: Two identical connecting components (9) are provided, and the two connecting components (9) are symmetrically distributed about the center line of the pre-winding roller (8).