Hot galvanizing circle shear blade zinc skin removing device

Abstract

The utility model relates to a hot galvanizing circle shear blade zinc skin removing device, and belongs to the technical field of hot galvanizing process equipment. According to the technical scheme, the device comprises a sleeve (1), a felt support (2), a felt (4), a fixing pin (6), an oil pipe (10), an oil tank (11) and a spring (15), one end of the oil pipe (10) is connected with the oil tank (11), the other end of the oil pipe (10) leads to the felt (4), the felt (4) is matched with an upper circle shear (12) of the circle shear and fixed to one end of the felt support (2), the other end of the felt support (2) is connected to a circle shear rack, and the oil tank (11) is connected with the oil tank (11). The middle of the felt support (2) and the sleeve (1) are fixed together, the sleeve (1) is sleeved on the fixing pin (6), and the fixing pin (6) is fixed on a circle shear rack. According to the device, the zinc skin adhered to the shear blade of the circle shear can be removed online, the service life of the shear blade is prolonged, and the quality defect of a plate strip caused by falling of the zinc skin is avoided.

Description

Technical Field

[0001] The utility model relates to a device for removing zinc from the shear blade of a hot-dip galvanizing disc shear, belonging to the technical field of hot-dip galvanizing process equipment in the metallurgical industry. Background Art

[0002] With the development of the automotive industry, demand for galvanized steel sheets for automotive exterior panels has steadily increased. Surface quality requirements for galvanized steel used in automotive exterior panels are extremely stringent, with no visible defects permitted. This translates to a "zero-defect" delivery. However, during the production of automotive sheet metal, the zinc coating on the strip edges can peel off when shearing with circular shears, adhering to the shear blades and falling off the strip surface. During customer use, this peeling can damage on-site equipment and stamping dies.

[0003] Circular edge trimming shears are essential equipment on hot-dip galvanizing lines, primarily used to trim the edges of steel strips to precisely control strip width and eliminate edge defects. The shears consist of an upper and lower disc blade. The shears work by forming a pair of cutting blades to shear the galvanized sheet.

[0004] The shear blade is disc-shaped, with a pair of blades arranged obliquely upward and downward, symmetrically set on both sides of the strip. As the strip moves forward, the edges of the strip are continuously sheared by the contact and engagement of the upper and lower shear blades rotating in opposite directions. When shearing hot-dip galvanized strip, the zinc scale on the edge of the strip will fall off and stick to the shear blade, affecting the subsequent shearing operation; at the same time, the zinc scale accumulated on the blade will fall onto the running strip, causing indentation quality defects in the product, and also causing serious quality problems for customers. At present, the solution to the above problems mainly relies on manual removal of zinc scale from the disc shear blade on a regular basis or with uncut steel coils, which is time-consuming and labor-intensive, and poses safety risks. Therefore, it is very necessary to design a device for removing zinc scale from the disc shear blade. Utility Model Content

[0005] The purpose of the utility model is to provide a device for removing zinc scale from the cutting blade of a hot-dip galvanized disc shear, which can remove the zinc scale adhered to the cutting blade of the disc shear online, extend the service life of the cutting blade, avoid the quality defects of the plate and strip caused by the falling of the zinc scale, and solve the problems existing in the background technology.

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

[0007] A device for removing zinc from the cutting blade of a hot-dip galvanized disc shear comprises a sleeve, a felt bracket, felt, a fixing pin, an oil pipe, an oil tank and a spring. One end of the oil pipe is connected to the oil tank, and the other end of the oil pipe leads to the felt. The felt cooperates with the upper disc shear of the disc shear. The felt is fixed to one end of the felt bracket, and the other end of the felt bracket is connected to the disc shear frame through a spring. The middle of the felt bracket is fixed to the sleeve, the sleeve is sleeved on the fixing pin, and the fixing pin is fixed to the disc shear frame.

[0008] A positioning pin is provided between the sleeve and the fixing pin.

[0009] The sleeve and the fixing pin are respectively provided with pin holes matched with the positioning pin.

[0010] One end of the fixing pin is provided with an external thread, and the fixing pin is fixed on the disc shear frame through a fixing nut.

[0011] The felt bracket is provided with a spring hanging hole matched with the spring.

[0012] The felt bracket is provided with a clamping groove matched with the felt, and a refueling port matched with the oil pipe is provided in the clamping groove.

[0013] The oil pipe is provided with a solenoid valve.

[0014] The beneficial effects of the utility model are as follows: during the hot-dip galvanizing production process, the zinc scale adhered to the disc shear blade is removed by the friction between the felt and the disc shear blade, and the felt is infiltrated through the oiling hole to lubricate the disc shear blade, thereby reducing the probability of the blade being adhered to the zinc scale, extending the service life of the blade, and avoiding quality defects of the plate and strip caused by the falling of the zinc scale. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the connection between the felt bracket and the sleeve;

[0017] Figure 3 Schematic diagram of the fixed pin structure;

[0018] Figure 4 This is a diagram for installing the felt bracket;

[0019] In the figure: sleeve 1, felt bracket 2, fuel filler port 3, felt 4, spring hanging hole 5, fixing pin 6, latch hole 7, positioning latch 8, fixing nut 9, oil pipe 10, oil tank 11, upper disc shear 12, strip steel 13, lower disc shear 14, spring 15, solenoid valve 16, fuel filler cap 17. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the accompanying drawings and examples.

[0021] Refer to the attached Figure 1-4 A device for removing zinc from the cutting blade of a hot-dip galvanized disc shear comprises a sleeve 1, a felt bracket 2, a felt 4, a fixing pin 6, an oil pipe 10, an oil tank 11 and a spring 15. One end of the oil pipe 10 is connected to the oil tank 11, and the other end of the oil pipe 10 leads to the felt 4. The felt 4 cooperates with the upper disc shear 12 of the disc shear. The felt 4 is fixed to one end of the felt bracket 2, and the other end of the felt bracket 2 is connected to the disc shear frame through a spring 15. The middle of the felt bracket 2 is fixed to the sleeve 1, and the sleeve 1 is sleeved on the fixing pin 6, and the fixing pin 6 is fixed to the disc shear frame.

[0022] In this embodiment, refer to the attached Figure 1-4 The hot-dip galvanized disc shear includes an upper disc shear 12 and a lower disc shear 14. The upper disc shear 12 and the lower disc shear 14 have the same diameter and are arranged up and down. The upper disc shear 12 rotates clockwise and the lower disc shear 14 rotates counterclockwise. The edges of the strip 13 on both sides are located at the bite of the upper and lower shear blades of the disc shear. The strip 13 moves forward, as shown in the direction of the arrow in the figure, driving the upper disc shear 12 and the lower disc shear 14 to rotate and shear off the edges of the strip.

[0023] Figure 1 It is shown that the oil tank 11 is fixed on the disc shear frame. The position of the oil tank 11 is higher than the upper disc shear 12. The oil tank cover 17 is installed on the upper part of the oil tank 11. The oil tank cover 17 can be opened to add oil to the oil tank 11. There is an oil hole at the bottom of the oil tank 11, and the oil hole is connected to the oil pipe 10. The upper part of the oil pipe 10 is equipped with a solenoid valve 16 to control the flow of oil. The other end of the oil pipe 10 is connected to the refueling port 3. The refueling port 3 intermittently soaks the felt 4, and the felt 4 evenly spreads the oil on the upper disc shear 12.

[0024] Figure 1 It is shown that one end of the spring 15 is fixed to the disc shear frame, and the other end is connected to the spring hanging hole 5, giving the felt 4 a reverse force, so that the felt 4 is pressed on the shearing blade of the upper disc shear 12, thereby removing the zinc skin on the shearing blade, and the felt 4 evenly applies the oil to the upper disc shear 12.

[0025] Figure 2 、 3 4 shows that one end of the fixing pin 6 is provided with an external thread, and the fixing pin 6 is fixed to the disc shear frame by a fixing nut 9. The felt bracket 2 is assembled by welding steel plates, and the felt bracket 2 and the sleeve 1 are welded together. Pin holes 7 are provided on the sleeve 1 and the fixing pin 6 respectively, and the sleeve 1 and the fixing pin 6 are positioned by a positioning pin 8.

[0026] A spring hanging hole 5 is provided at one end of the felt bracket 2, and a slot matching the felt 4 is provided at the other end. A refueling port 3 matching the oil pipe 10 is provided in the slot, and the oil in the oil tank 11 flows to the felt 4 through the oil pipe 10 and the refueling port 3.

[0027] Before the disc shear works, manually adjust the position of the pin hole 7 so that the felt 4 contacts the upper disc shear 12, and at the same time give the solenoid valve 16 a signal to open automatically. The oil in the oil tank 11 flows from the solenoid valve 16 through the oil pipe 10 to the felt 4, so that the felt 4 is effectively infiltrated. The spring 15 is hung on the spring hanging hole 5 of the felt bracket 2. Using the principle of leverage, a reaction force is given to the felt 4, so that a friction force is formed between the upper disc shear 12 and the felt 4 during operation, and the zinc skin on the shear blade is removed. At the same time, the oil on the felt 4 is evenly spread on the disc shear blade; when the trimming program stops, a signal is given to the solenoid valve 16 to close the solenoid valve 4. There is no need to infiltrate the felt 4, thus avoiding the waste of oil in the oil tank 11.

[0028] An embodiment of the present invention is as follows:

[0029] The fuel tank 10 is welded from steel plates, wherein the thickness of the steel plates is 1 mm. The length, width, and height of the fuel tank 10 are 200 mm respectively. A refueling port is provided at the top of the fuel tank 10, and an opening for connecting to the oil delivery pipe 10 is provided at the bottom of the fuel tank 10.

[0030] The felt bracket 2 is welded from steel plates, with a length of 50 mm and a width of 25 mm. The felt slot at one end of the felt bracket 2 is 65 mm long, 40 mm wide, and 20 mm high, with a depth of 7 mm. The spring hanging hole 5 at the other end of the felt bracket 2 is located on a steel plate with a length of 35 mm and a width of 35 mm, and a diameter of φ12 mm.

[0031] Casing 1 is 100 mm long and φ27 mm in diameter;

[0032] The fixing pin 6 is 170mm long, 20mm in diameter, with a thread length of 60mm, M16*2.0, and a pin hole diameter of 4.5mm.

[0033] Solenoid valve model YSA-15-25.

Claims

1. A device for removing zinc from the cutting blade of a hot-dip galvanized disc shear, characterized in that: The utility model comprises a sleeve (1), a felt bracket (2), a felt (4), a fixing pin (6), an oil pipe (10), an oil tank (11) and a spring (15), wherein one end of the oil pipe (10) is connected to the oil tank (11), and the other end of the oil pipe (10) leads to the felt (4), the felt (4) cooperates with an upper disc shear (12) of a disc shear, the felt (4) is fixed to one end of the felt bracket (2), and the other end of the felt bracket (2) is connected to a disc shear frame through a spring (15), the middle of the felt bracket (2) is fixed to the sleeve (1), the sleeve (1) is sleeved on the fixing pin (6), and the fixing pin (6) is fixed to the disc shear frame.

2. A device for removing zinc from the cutting blade of a hot-dip galvanized disc shear according to claim 1, characterized in that: A positioning pin (8) is provided between the sleeve (1) and the fixing pin (6).

3. A device for removing zinc from the cutting blade of a hot-dip galvanized disc shear according to claim 2, characterized in that: The sleeve (1) and the fixing pin (6) are respectively provided with a pin hole (7) that matches the positioning pin (8).

4. A device for removing zinc from the cutting blade of a hot-dip galvanized disc shear according to claim 3, characterized in that: One end of the fixing pin (6) is provided with an external thread, and the fixing pin (6) is fixed to the disc shear frame via a fixing nut (9).

5. The device for removing zinc from the cutting blade of a hot-dip galvanized disc shear according to claim 1 is characterized in that: The felt support (2) is provided with a spring hanging hole (5) which matches the spring (15).

6. A device for removing zinc from the cutting blade of a hot-dip galvanized disc shear according to claim 1, characterized in that: The felt bracket (2) is provided with a slot that matches the felt (4), and a refueling port (3) that matches the oil pipe (10) is provided in the slot.

7. A device for removing zinc from the cutting blade of a hot-dip galvanized disc shear according to claim 1 or 6, characterized in that: The oil pipe (10) is provided with a solenoid valve (16).

Images