Embossing Rollers are suitable for pressing plastic sheet, film, aluminum foil, leather, hard board, wallpaper, floor tiles, glass, paper and other concave and convex patterns to improve the beauty of the product surface, strengthen anti-counterfeiting, and protect trademarks. And can develop different patterns of embossing rollers according to customer requirements.

The stainless steel roller conveyor has a large conveying capacity; the traction chain has high strength and can be used for long-distance conveying; and the layout of the transmission line is flexible. Compared with the mesh belt conveyor, the stainless steel roller conveyor can convey under a larger skew angle and a smaller bending radius, so the flexibility of placement is greater. The angle of the stainless steel roller conveyor can reach 30°-35°, and the bending radius is generally about 5-8m; various processings such as sorting, drying, cooling or assembling can be carried out during the conveying process. The operation is stable and reliable; the structure of the stainless steel roller conveyor is varied. Stainless steel roller conveyors are generally classified as follows: according to the device form of the roller conveyor, it can be divided into fixed and mobile; according to the layout of the roller conveyor, it can be divided into horizontal, horizontal, skewed, horizontal skewed, etc. The material conveyed by the roller conveyor is in a closed state from the inlet to the outlet, and the outlet does not need to be equipped with a dust collector, which can ensure that no dust leaks into the environment during the conveying of the material. The material is smoothly conveyed along the roller conveyor, and there is no internal movement at all, so the conveyed material is less damaged, and the slow roller conveying causes very little damage to the conveyed material.

The roller is an important part of the belt conveyor. There are many types and large quantities. It accounts for 35% of the total cost of a belt conveyor and bears more than 70% of the resistance, so the quality of the roller is particularly important. Now the support Roller manufacturers attach great importance to this aspect, and have invested a lot of money and equipment in the roller production line and roller production equipment. The role of the roller is to support the weight of the conveyor belt and the material. The roller must be flexible and reliable in operation. Reduce transportation The friction with the same roller and roller accessories plays a key role in the life of the conveyor belt, which accounts for more than 25% of the total cost of the conveyor. Although the roller is a small part in the belt conveyor, the structure is not complicated , But it is not easy to manufacture high-quality rollers and roller sets.

Construction process of roller encapsulation

1. Polishing the roller

Clean up the residual glue on the roller, then use a special grinder to polish a rough surface without rust on the roller, and finally use a fiber disc to lightly polish it.

2. Clean the noodles

Sweep the polished surface clean with a cleaning brush, and then clean it with a non-toxic flame-retardant cleaning agent to ensure that there is no residue on the surface of the roller. If there is water on the surface of the drum, let it dry.

3. Apply adhesive

First, apply the metal treatment agent thinly and evenly on the polished surface of the roller, and let it dry completely. Then mix the adhesive in a specific proportion evenly, apply forcefully and evenly on the cylinder once, wait for it to dry completely, and then paint a second time, and also paint on the surface of the rubber sheet.

4. Paste the rubber sheet

When the adhesive dries to slightly sticky but does not adhere to the back of the fingers, paste the rubber sheet, and roll it with a compaction roller, use a rubber hammer to beat the rubber sheet firmly to ensure that there are no bubbles inside, and finally fill it with a glue gun Seams, and polish the edges.

Polyurethane rubber has a wide range of hardness, as low as low modulus rubber below Shore A10, and high impact elastic material as high as Shore D85. Its elastic modulus can be as high as hundreds of megapascals, which greatly exceeds others. The elastic modulus of rubber is in the range (approximately 0.2-10 MPa), so polyurethane rubber has a wide range of properties and is a type of polymer material ranging from rubber to plastic. It is also precisely because of polyurethane's outstanding characteristics of wear resistance, oil resistance, aging resistance, low temperature resistance, high hardness, and high elasticity. In recent years, the amount of polyurethane has increased rapidly, and the scope of application has continued to expand. It is widely used in petrochemical, mining machinery, and light industry. Machinery, water conservancy engineering, transportation and shoemaking, papermaking, electromechanical and other industries have replaced and saved a large amount of wood, steel and various rare metals. However, the existing polyurethane rubber rollers are not ideal for use in some special environments. Especially when used for a long time and under high speed conditions, its high temperature resistance, friction resistance, and corrosion resistance performance will be significantly reduced. For example, the polyurethane parts used in foreign high-speed cigarette equipment imported from our country have to run for a long time under the condition of high speed, and the wear of the parts is more serious. The use time is only 20 to 35 days, which not only affects production efficiency, but also has zero The components are all imported, so the running cost is higher

The purpose of the present invention is to provide a polyurethane rubber roller with superior performance in terms of wear resistance, corrosion resistance and high temperature resistance.

Compared with the prior art, the present invention has the following advantages and effects. By adopting the above scheme, the formulated polyurethane product has extraordinary wear resistance, high temperature resistance, corrosion resistance, aging resistance and other properties, and its wear resistance is natural rubber The comprehensive performance of its products is 10 times that of rubber products, and the price is only 1-2 times that of general rubber, especially the polyurethane rubber roller formulated with the above formula, in the working environment of high speed and spraying industrial glycerin , There is no change after three months of use. However, the existing ordinary polyurethane rubber rollers cannot be used due to foaming or severe abrasion in less than one month. Its comprehensive performance is also superior to similar foreign products, and the cost is low. It is an ideal product that can completely replace imports.

Component welding: group welding of inner plate, shaft head, bushing, blocking plate, inner tube, etc., the inner tube is statically balanced within 50g, the inner tube is drawn with a spiral line, and the flat steel runner is welded.

Car distribution, installation, welding: distribution of car inner tube, size and outer tube interference 0.4mm, two-plate back welding angle of 15X30 degrees, grinding inner tube, cleaning slag, inspecting inner tube size and outer tube inner diameter size Whether it is suitable, the heating sleeve is in place, and the whole assembly is welded after cooling and shrinking. (Note: 45# steel is heated before welding and heat preservation after welding).

Annealing, rough turning, quenching: annealing heat treatment, process quenching and tempering, multiple stress relief, leave allowance for rough turning, static balance, greater than 50g, need to calculate the amount of bias, and borrow on the lathe.

Quenching: The surface hardness should be HRC58°—60°, and the roller surface has no tortoise cracks. Fine turning and rough grinding: two-axis heads repair the pin hole, two-axis heads to the roller surface runout <0.05, according to the requirements of the drawing to process the length to the size, and the outer circle is left with a margin, 0.5—0.6. The grinding support circle is used as the bracket position. According to the requirements of the figure, the grinding roller surface size, Ra0.5 two shaft heads to the roller surface runout <0.02.

Dynamic balance, electroplating, fine grinding: Do dynamic balance G40, plug the vent, do pressure test without leakage, do water pressure smooth test. Hard chromium electroplating, 0.15 chromium layer on one side is uniform without pinholes, shedding and other defects. The two shaft heads are precisely ground, and the two bearing blocks are opposite to the roll surface run-out <0.01 roughness 0.8. The gears of the remaining shaft heads are ground to the tolerance range.

Frosted and finely polished mirror surface: Use a disc grinder to grind the surface of the roller to inspect the surface of the roller without water ripples, spirals, pinholes, flies and other defects. On the polishing machine, the surface of the roller is polished to a roughness of Ra0.01—0.005 (the finish is up to 14) to achieve a super mirror surface. Hardness HRC62° after chrome plating and polishing.

Hollow welded quenching rollers require high hardness and narrow soft belt requirements. In the actual processing process, they are affected by the heat treatment tempering temperature and welding preheating temperature, which makes it difficult to guarantee the final hardness; in addition, the roller sleeve material is 45# steel. In addition to quenching and welding, the width of the soft belt must be ensured, which increases the process difficulty between hot and cold processing and welding.