Device for controlling longitudinal cutting and coiling tension of thick coating silicon steel

Abstract

The utility model relates to the field of thick coating silicon steel processing, in particular to a thick coating silicon steel longitudinal cutting coiling tension control device which comprises a tension base plate and a limiting structure, the tension base plate is of an integrally-formed structure, grooves are formed in the left side and the right side of the bottom of the tension base plate, the limiting structure is in an L shape, and the grooves in the bottom of the tension base plate are matched with the limiting structure. A back adhesive snap fastener is attached to the lower portion of the tension base plate, two layers of felt pads are arranged below the back adhesive snap fastener, back adhesive snap fasteners are attached to the lower portions of the felt pads, the tension base plate is arranged below the back adhesive snap fastener, the thick-coating silicon steel strip is arranged between the two layers of felt pads, and the structures of the two sides of the thick-coating silicon steel strip are in mirror symmetry. Uniform transition of pressing force in the width direction of silicon steel strip steel is achieved through the integrated pressing structure, the problem that the longitudinal cutting surface quality of thick-coating non-oriented silicon steel is poor is solved, meanwhile, the device has the advantages of being convenient to replace the felt pad, low in consumption and the like, the material cost and the operation difficulty are reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of thick-coated silicon steel processing, in particular to a control device for the slitting and coiling tension of thick-coated silicon steel. Background Art

[0002] The 5# and 6# shearing units of the Silicon Steel Division are the supporting joint shearing units of the continuous rolling mill designed by Mitsubishi Hitachi of Japan, designed and manufactured by China Heavy Machinery Research Institute Co., Ltd., and introduced the disc shears of the German Georg Company. The process technology is independently developed and designed for slitting and coiling of silicon steel with a conventional thickness of 0.5-1μm. During strip production, the coiling tension is established between the coiler drum and the tension pad (with a wool blended viscose pad attached). The tension pad consists of 13 pieces of 400mm long * 100mm wide * 20mm thick bakelite boards. When adjusting the tension, it is necessary to manually use a wrench to adjust the knob on the tension pad.

[0003] During the longitudinal cutting process of thick-coated silicon steel, the gap compression force of the split tension pad is small, and the coating particles are embedded in the felt pad and attached centrally, which scratches the surface of the thick coating and causes surface bright quality defects. Utility Model Content

[0004] The utility model aims to provide a control device for the slitting and coiling tension of thick-coated silicon steel, so as to solve the problem that the gap pressing force of the split tension pad is small, the coating particles are embedded in the felt pad and adhere to it in a concentrated manner, and the surface of the thick coating is scratched to cause bright quality defects.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A control device for the longitudinal cutting and coiling tension of thick-coated silicon steel comprises a tension pad and a limiting structure, wherein the tension pad is an integrally formed structure, and grooves are opened on the left and right sides of the bottom of the tension pad; the limiting structure is "L"-shaped, and the grooves at the bottom of the tension pad fit with the limiting structure; the limiting structure is used to fix and limit the tension pad, and is also convenient for fixing the tension pad to the basic steel structure of the unit; adhesive-backed snap fasteners are attached under the tension pad, and two layers of felt pads are arranged under the adhesive-backed snap fasteners; adhesive-backed snap fasteners are attached under the felt pads, and the tension pad is arranged under the adhesive-backed snap fasteners; the thick-coated silicon steel strip is placed between the two layers of felt pads, and the structures on both sides of the thick-coated silicon steel strip are mirror-symmetrical.

[0007] The tension pad is made of bakelite, and the bending strength of the bakelite shall not be less than the rated load of the hydraulic cylinder of the tension pressing device.

[0008] The overall tension adjustment is determined by pressing down the hydraulic cylinder stroke and pressure, and can meet the shearing needs of conventional 0.2mm-0.65mm thick silicon steel with different coatings without adjustment. The local tension adjustment is made by inserting 1mm thick polypropylene gaskets, the general specification is 40mm*20mm. It can be adjusted according to the production strip specifications.

[0009] A gasket is installed between the tension pad and the adhesive-backed snap fastener.

[0010] The width of the coiling tension adjustment device is greater than the sum of the longitudinal cutting widths of the thick-coated silicon steel strip.

[0011] The method of using the gasket is: first confirm whether the tension value meets the requirements through the operation screen; then check the tension of the strip. For the strip that is not tightened enough, insert the gasket between the tension pad and the snap fastener above it. You can stack multiple layers until the tension meets the requirements.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] (1) The tension pad is integrated and the adhesive snap fastener is detachable, so it is easy to replace if the adhesive snap fastener or tension pad is damaged;

[0014] (2) When replacing the felt pad, you only need to align it and stick it to the snap fastener. Compared with the previous method of fixing the bolt to the steel pipe and requiring two people to work together to replace it, one person can complete the operation independently;

[0015] (3) Traditionally, the tension adjustment requires personnel to climb to the top of the equipment and use a wrench to rotate the knob. In this device, the operator can insert a polypropylene gasket between the tension pad and the snap fastener to achieve local tension adjustment, saving time and effort.

[0016] (4) The integrated tension pad eliminates the problem of small gap clamping force of the segmented tension pad, coating particles embedded in the felt pad and concentratedly attached, scratching the surface of the thick coating, causing surface quality defects, and achieving uniform transition of the clamping force in the width direction. The surface quality of the thick-coated silicon steel is controlled while the felt pad consumption is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the tension pad of the utility model;

[0019] Figure 3 It is a schematic diagram of the structure of the utility model and the strip steel structure.

[0020] Explanation of the accompanying drawings: 1. Restriction structure; 2. Tension pad; 3. Adhesive-backed snap fastener; 4. Felt pad; 5. Thick-coated silicon steel strip. DETAILED DESCRIPTION

[0021] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and embodiments. Example 1

[0022] The utility model is applied to the CS5 shearing unit of the silicon steel division of China Baowu Taigang Group, such as Figure 1-2 As shown, a control device for the longitudinal cutting and winding tension of thick-coated silicon steel comprises a limiting structure 1 and a tension pad 2. The tension pad 2 is integrally formed and adopts an integrated bakelite board of 1300mm length * 400mm width * 20mm thickness. The bending strength of 148MPa is greater than the rated load of 14.5MPa of the pressing hydraulic cylinder. The left and right sides of the bottom of the tension pad 2 are grooved. The limiting structure 1 is "L"-shaped. The bottom groove of the tension pad 2 fits with the limiting structure 1. The limiting structure 1 is used to fix and limit the tension pad 2, and it is also convenient for the tension pad 2 to be fixed to the basic steel structure of the unit. A back-adhesive snap fastener 3 is attached under the tension pad 2. Two layers of felt pads 4 are arranged under the back-adhesive snap fastener 2. The felt pads are made of wool and chemical fiber blended material. After being put into use, they can be stably used in the production of thick-coated and ordinary-coated silicon steel. A back-adhesive snap fastener 3 is attached under the felt pad 4. A tension pad 2 is arranged under the back-adhesive snap fastener 3. The thick-coated silicon steel strip 5 is placed between the two layers of felt pads 4. Figure 3 As shown, the structures on both sides of the thick-coated silicon steel strip are mirror-symmetrical; the width d0 of the winding tension adjustment device is greater than the sum of the longitudinal cutting widths d1+d2+d3+d4+d5 of the thick-coated silicon steel strip, where the sum of the strip widths is d1+d3+d5, which is determined by the production capacity of the process before longitudinal cutting and the width required by the order, and the strip gap d2+d4 is determined by the setting of the isolation ring; a limiting structure is used to allow the bakelite board to penetrate along the width direction of the strip, and during the operation of the strip, the limiting structure on the strip outlet side is clamped by the extrusion force of the tension pad, and the tension pad will not move in the width direction of the strip; another function of this structure is that the tension pad can be replaced without disassembling the entire set of tension control devices. If the tension pad is damaged or adhered to foreign matter that affects the surface quality of the silicon steel, the tension pad can be pulled out and replaced, with high replacement efficiency and saving operation time; the tension pad is stably adhered by the backing glue snap fastener without falling off, and the snap fastener can be directly torn off and replaced when the viscosity of the snap fastener deteriorates, which is convenient to use.

[0023] The relevant product data, tension conditions and surface quality conditions of thick-coated silicon steel produced in a certain month are shown in Table 1.

[0024] Table 1 Production of thick-coated silicon steel by CS5 shearing unit in a certain month

[0025] Brand coating Incoming material weight / t Finished product weight / t Yield Material width / mm Steel belt width d3 / mm Steel belt width d1(d5) / mm Authenticity rate Reasons for defective products Gasket usage Average tension / KN 50TW400 C6 98.22 97.16 98.92% 1020 910 55 100% - Not used 12.26 35TW300 C6 31.03 30.73 99.03% 1030 630 200 100% - Not used 11.49 50TW270 C6 242.98 238.98 98.35% 1033 880 76.5 96.63% Bright Road Not used 11.82

[0026] From the data results, we can see that the clamping force is evenly transitioned in the width direction, the surface quality of thick-coated silicon steel is controlled, and there are very few bright quality defects, which improves the yield rate. Example 2

[0027] The utility model is applied to the CS6 shearing unit of the silicon steel division of China Baowu Taigang Group, such as Figure 1-2 As shown, a control device for the longitudinal cutting and coiling tension of thick-coated silicon steel comprises a limiting structure 1 and a tension pad 2. The tension pad 2 is integrally formed and adopts an integral bakelite board of 1300mm length * 400mm width * 20mm thickness. The bending strength of 145MPa is greater than the rated load of 14.5MPa of the pressing hydraulic cylinder. The left and right sides of the bottom of the tension pad 2 are grooved. The limiting structure 1 is "L"-shaped. The bottom groove of the tension pad 2 fits with the limiting structure 1. The limiting structure 1 is used to fix and limit the tension pad 2, and it is also convenient for the tension pad 2 to be fixed to the basic steel structure of the unit. A back-adhesive snap fastener 3 is attached under the tension pad 2, and two layers of felt pads 4 are arranged under the back-adhesive snap fastener 2. The felt pad is made of wool material and can be stably used in the production of thick-coated and ordinary-coated silicon steel after being put into use. A back-adhesive snap fastener 3 is attached under the felt pad 4, and a tension pad 2 is arranged under the back-adhesive snap fastener 3. The thick-coated silicon steel strip 5 is placed between the two layers of felt pads 4, as shown in FIG. Figure 3 As shown in the figure, the structures on both sides of the thick coated silicon steel strip are mirror symmetrical; the width d0 of the coiling tension adjustment device is greater than the sum of the longitudinal cutting widths of the thick coated silicon steel strip d1+d2+d3+d4+d5, where the sum of the strip widths is d1+d3+d5, which is determined by the production capacity of the process before longitudinal cutting and the width required by the order, and the strip gap d2+d4 is determined by the isolation ring setting; the relevant product data, tension conditions and surface quality conditions of thick coated silicon steel produced in a certain month are shown in Table 2, where the steel band width d1 is 0, indicating that the edge cut by the disc is directly coiled and scrapped by the curling machine without passing through the tension control device.

[0028] Table 2 Production of thick-coated silicon steel by CS6 shearing unit in a certain month

[0029] Brand coating Incoming material weight / t Finished product weight / t Yield Material width / mm Steel belt width d3 / mm Steel belt width d1 (d5) / mm Authenticity rate Reasons for defective products Gasket usage Average tension / KN 50TW400 C6 188.18 175.775 93.41% 1160 1103 0 100% - Not used 12.14 65TWG470-SIE C6 15.04 14.03 93.28% 1060 1000 0 100% - Not used 11.78 50TW400 C6 70.85 66.25 93.51% 1080 1032 0 100% - Not used 11.95 50W310 C6 28.47 28.1 98.70% 1030 782 124 100% - Not used 12.37

[0030] From the data results, we can see that the clamping force is evenly transitioned in the width direction, the surface quality of thick-coated silicon steel is controlled, the problem of bright quality defects due to scratches on the thick coating surface is zero, and the yield rate is improved.

Claims

1. A device for controlling the tension of thick-coated silicon steel slitting coiling, comprising a tension pad (2), characterized in that: It also includes a limiting structure (1), wherein the tension pad (2) is an integrally formed structure, and grooves are opened on the left and right sides of the bottom of the tension pad (2), and the limiting structure is "L"-shaped. The grooves at the bottom of the tension pad (2) fit with the limiting structure (1), and the limiting structure is used to fix and limit the tension pad. A back-adhesive snap fastener (3) is attached below the tension pad (2), and two layers of felt pads are arranged below the back-adhesive snap fastener (3). A back-adhesive snap fastener (3) is attached below the felt pad (4), and the tension pad (2) is arranged below the back-adhesive snap fastener (3). The thick-coated silicon steel strip (5) is placed between the two layers of felt pads (4), and the structures on both sides of the thick-coated silicon steel strip (5) are mirror-symmetrical.

2. A control device for the slitting and coiling tension of thick-coated silicon steel according to claim 1, characterized in that: The tension pad (2) is made of bakelite, and the bending strength of the bakelite shall not be less than the rated load of the tension pressing device's hydraulic cylinder.

3. The device for controlling the slitting and coiling tension of thick-coated silicon steel according to claim 1, characterized in that: A gasket is installed between the tension pad (2) and the adhesive-backed snap fastener (3).

4. A control device for the slitting and coiling tension of thick-coated silicon steel according to any one of claims 1 to 3, characterized in that: The width of the coiling tension adjustment device is greater than the sum of the longitudinal cutting widths of the thick-coated silicon steel strip.

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