A belt winding aid arm head to prevent belt scratches

Abstract

This utility model relates to a belt winding aid arm head for preventing strip scratches, belonging to the technical field of cold rolling production equipment in the metallurgical industry. The technical solution is as follows: the arm head body (1) is located between the strip coiler core shaft and the winding aid belt. At the end of the arm head body (1) near the strip coiler core shaft and the winding aid belt, several guide wheels (2) that cooperate with the strip are provided, and guide blocks (3) are located between adjacent guide wheels (2). The several guide wheels (2) that cooperate with the strip at the end of the arm head body (1) near the strip coiler core shaft and the winding aid belt are rotatably connected to the arm head body (1), and the guide blocks (3) are welded to the arm head body (1). The several guide wheels (2) that cooperate with the strip at the end of the arm head body (1) near the strip coiler core shaft and the winding aid belt are evenly arranged along the width direction of the strip. The beneficial effect of this utility model is that it can eliminate the strip head scratch defects generated during the coiling process.

Description

Technical Field

[0001] This utility model relates to a belt winding aid arm head for preventing strip scratches, belonging to the technical field of cold rolling production equipment in the metallurgical industry. Background Technology

[0002] The main function of the coiler at the exit of a galvanizing production line is to coil the strip steel into coils. A belt-driven coiler, mounted on the coiler's reducer, assists in coiling the strip. The exit coiling procedure involves the belt-driven coiler rotating to its working position, with its arm gripping the mandrel. The strip steel is fed into the mandrel from the exit deflector pinch rollers, and the belt-driven coiler assists in coiling. The rotation of the mandrel and the belt-driven coiler together complete the coiling process. Tension is applied only after the strip steel, aided by the belt-driven coiler, has wound around the mandrel three times; prior to this, the coiling tension is provided by the belt.

[0003] The boom head is an important component of the belt winding aid. Its important function is to guide the strip steel between the mandrel and the winding aid belt. When the steel coil is wound, due to the large winding tension and hydraulic tension of the mandrel, scratches are generated between the boom head and the contacting strip steel, forming a belt head scratch defect. The belt winding aid returns to the original waiting position after three windings are completed, and the scratches disappear at this time.

[0004] See attached document Figure 6 In the production of cold-rolled or galvanized products, after the steel coil comes off the production line, the mandrel is empty. An external support lifts the mandrel, raising the threading platform. The belt winding aid rotates to the working position, the mandrel expands, and it awaits the strip head. The strip head is fed in by the steering pinch rollers, and the strip is transported to the mandrel via the threading platform. The belt winding aid assists in winding, and after the mandrel rotates three times, the belt winding aid returns to its original waiting position. In actual production, for aluminum-silicon products with a thickness of 1.5mm or more, severe scratches occur between the strip head and the upper surface of the strip. Because the belt winding aid only leaves the working position after winding three turns on the mandrel, depending on the strip thickness and material, three turns of strip head scratches can occur, affecting product quality and failing to meet customer requirements for normal processing and surface quality. This is especially true for aluminum-silicon products, which have high surface quality requirements and zero tolerance for strip head scratches. The weight of the scratch defects at the strip head varies depending on the thickness and material of the strip. Aluminum-silicon strips with a thickness of 1.5mm or more will have serious scratch defects. As the thickness of the strip increases, the weight of the strip with scratch defects at the strip head also increases. Utility Model Content

[0005] The purpose of this invention is to provide a belt winding aid arm head that prevents strip from being scratched, thereby eliminating the strip head scratch defects generated during the winding process and solving the problems existing in the background art.

[0006] The technical solution of this utility model is:

[0007] A belt winding aid arm head for preventing strip scratches includes an arm head body, guide wheels, and guide blocks. The arm head body is located between the strip coiler core shaft and the winding aid belt. The end of the arm head body near the strip coiler core shaft and the winding aid belt is provided with several guide wheels that cooperate with the strip. The guide blocks are located between two adjacent guide wheels.

[0008] Several guide wheels that rotatably connect to the strip coiler core shaft and the auxiliary coiling belt at one end of the boom head body are respectively connected to the strip. The guide block is welded to the boom head body.

[0009] Several guide rollers that cooperate with the strip at one end of the arm head body near the strip coiler core shaft and the winding aid belt are evenly arranged along the width direction of the strip.

[0010] The guide block is a wedge-shaped structure that cooperates with the core shaft of the strip coiler.

[0011] The surface of the guide block that contacts the strip is tangent to the outer circle of the strip coiler core shaft.

[0012] The two ends of the arm head body are respectively hinged to the winding aid by pins and connecting rods, and the two ends of the arm head body are also rotatably connected to the winding aid arm by large bolts.

[0013] The beneficial effects of this utility model are: the strip steel is guided by the guide block and guide wheel at the end of the arm head to the space between the core shaft of the strip steel winding machine and the auxiliary winding belt. The strip steel head changes from sliding friction to rolling friction at the guide wheel. The winding of the entire strip steel width direction changes from surface contact to line contact, avoiding the generation of transverse scratches on the strip steel, and thus eliminating the root cause of strip head scratches. Attached Figure Description

[0014] Figure 1 This is a perspective view of the present utility model;

[0015] Figure 2 This is the front view of the present utility model;

[0016] Figure 3 This is the left view of the present invention;

[0017] Figure 4 This is a rear view of the present invention;

[0018] Figure 5 This is a partial enlarged view of the present invention during installation;

[0019] Figure 6 This is a schematic diagram illustrating the application of this utility model in exit winding;

[0020] In the diagram: 1. Arm head body; 2. Guide wheel; 3. Guide block; 4. Connecting bolt; 5. Copper sleeve; 6. Pin; 7. Copper sleeve; 8. Pressure plate; 9. Fastening bolt; 10. Washer; 11. Pin hole; 12. Large bolt hole; 15. Lower arm of the winding aid; 16. Connecting rod; 17. Mandrel; 18. Belt; 19. Threading platform; 20. Steering pinch roller; 21. External support. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and examples.

[0022] See attached document Figure 1-6 A belt winding aid arm head for preventing strip scratches includes an arm head body 1, guide wheels 2 and guide blocks 3. The arm head body 1 is located between the strip coiler core shaft and the winding aid belt. The end of the arm head body 1 near the strip coiler core shaft and the winding aid belt is provided with a number of guide wheels 2 that cooperate with the strip. The guide blocks 3 are located between two adjacent guide wheels 2.

[0023] In this embodiment, refer to the appendix Figure 1-6 The belt winch arm includes an arm head body 1, a guide wheel 2, a guide block 3, a connecting bolt 4, a copper sleeve 5, a pin 6, a copper sleeve 7, a pressure plate 8, a fastening bolt 9, a washer 10, a pin hole 11, and a large bolt hole 12, wherein:

[0024] Guide roller 2 is a driven roller with a diameter of 30mm. Guide roller 2 is installed on the arm head body 1 by bolts, flat washers and spring washers, and can rotate. Several guide rollers 2 are evenly arranged along the width direction of the strip.

[0025] The guide block 3 is set between two adjacent guide wheels 2 and welded to the arm head body 1. The guide block 3 has a wedge-shaped structure, and the surface that contacts the strip is tangent to the outer circle of the strip coiler core shaft. Its main function is to prevent the strip head from hitting the guide wheel 2 before entering the coiler, thus preventing damage to the guide wheel 2.

[0026] Both ends of the arm head body 1 are connected to the winding aid arm via the threads of the large bolts 4. A copper sleeve 5 is provided between the large bolts 4 and the arm head body 1, which allows the large bolts 4 to rotate.

[0027] Both ends of the arm head body 1 are connected to the connecting rod 16 via pins 6, and the angle of the arm head body 1 can be adjusted via the connecting rod 16.

[0028] The working principle of this utility model:

[0029] Appendix Figure 6This diagram illustrates the export coiling process. In the production of cold-rolled or galvanized products, the export coiling procedure is as follows: After the steel coil comes off the production line, the mandrel 17 is empty. The external support 21 supports the mandrel 17, raising the threading table 19. The belt winding aid rotates to the working position, and the mandrel 17 expands, awaiting the strip head. A new strip head is fed in by the steering pinch rollers. The strip is transported to the mandrel 17 via the threading table 19. The belt winding aid assists in winding. After the mandrel rotates three times, the belt winding aid returns to its original waiting position.

[0030] With the boom head of this invention, the strip steel is guided by the guide block 3 on the boom head body 1 between the mandrel 17 and the winding belt 18. The strip steel rotates along the outer circle trajectory of the mandrel 17 and enters the winding stage through the boom head guide wheel 2. After designing the guide wheel 2, the sliding friction of the strip steel head at the guide wheel 2 is changed from the original boom head design to rolling friction. The winding process in the entire strip steel width direction changes from surface contact to line contact, avoiding the generation of transverse scratches and thus eliminating the root cause of strip head scratches.

Claims

1. A strip winder arm head for preventing strip damage, characterized by: It includes a boom head body (1), guide wheels (2) and guide blocks (3). The boom head body (1) is located between the strip coiler core shaft and the auxiliary winding belt. The boom head body (1) is provided with several guide wheels (2) that cooperate with the strip at one end near the strip coiler core shaft and the auxiliary winding belt. The guide blocks (3) are located between two adjacent guide wheels (2).

2. A belt winder arm head to prevent strip damage according to claim 1, wherein: Several guide wheels (2) that cooperate with the strip steel at one end of the arm head body (1) near the strip steel coiler core shaft and the auxiliary coiling belt are rotatably connected to the arm head body (1), and guide blocks (3) are welded to the arm head body (1).

3. A belt winder arm head to prevent strip damage according to claim 2, wherein: The arm head body (1) has several guide wheels (2) that cooperate with the strip at one end near the strip coiler core shaft and the auxiliary winding belt, which are evenly arranged along the width direction of the strip.

4. A belt winder arm head to prevent strip damage according to claim 2, wherein: The guide block (3) is a wedge-shaped structure that cooperates with the core shaft of the strip coiler.

5. A belt winder arm head to prevent strip damage to a strip as claimed in claim 4, wherein: The surface of the guide block (3) that contacts the strip is tangent to the outer circle of the strip coiler core shaft.

6. A belt winder arm head to prevent strip damage according to claim 1, wherein: The two ends of the arm head body (1) are hinged to the winding aid by pins (6) and connecting rods (16) respectively. At the same time, the two ends of the arm head body (1) are also rotatably connected to the winding aid arm by large bolts (4).

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