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Dongguan ultrasonic plastic welding machine manufa

With the rapid development of China's industrial and machinery industries, more and more industry manufacturers will use ultrasonic plastic welding machines, then everyone knows the design points of ultrasonic plastic welding machine products? It doesn't matter, then Dongguan ultrasonic plastic welding machine manufacturers will come to introduce you, let's take a look. Plastic products in ultrasonic welding should pay attention to the following structural design points:
1. Thickness of rubber: The thickness of plastic products is usually around 0.80-3.00. It is too thick to shrink and produce bubbles. It is too thin to be full of glue. The thickness of large products is thicker, and the smaller ones are thinner. The product takes 1.0-2.0 as much. Moreover, the glue position should be as uniform as possible. In the case of last resort, the local area may be appropriately thicker or thinner, but it needs to be gradual and non-mutable. It should be based on the principle of not shrinking and filling the glue. Generally, the plastic glue thickness is less than 0.3. It is very difficult to get the glue, but the soft rubber and rubber can also be filled with glue when the thickness is 0.2-0.3.
2. Reinforcing bars: Most of the plastic products have reinforcing ribs. Because the reinforcing ribs can greatly increase the overall strength without increasing the overall thickness of the product, it is especially useful for large and stressed products, and also prevents product deformation. . The thickness of the rib is usually 0.5-0.7 times the thickness of the whole glue, and if it is more than 0.7 times, it is easy to shrink. When the height of the rib is large, the slope of 0.5-1 is required, and when the height is short, the slope is not made.
3, the draft angle: plastic products have to do the draft, except for the shallower and special requirements. The draft angle is usually 1-5 degrees, usually about 2 degrees, depending on the size, height and shape of the product, so that the mold can be smoothly demolded and the function is not affected. The slope of the front mold of the product is usually 0.5 degree larger than the slope of the back mold, so that the product can remain in the back mold when the mold is opened. Usually, the position of the pillow, the insertion, the piercing, etc. should be inclined, and the upper and lower gaps should be greater than 0.1.
4. Rounded corners: In addition to the special requirements for specifying the sharp edges, plastic products usually have rounded corners at the edges to reduce stress concentration, facilitate plastic flow and easy demoulding. The minimum R is usually greater than 0.3, which is difficult to achieve on a R mold that is too small.
5. Hole: From the point of view of mold processing, the hole is preferably made into a circular hole with a simple shape. As far as possible, it is not necessary to make a complicated shaped hole. The hole diameter should not be too small. The hole depth and the hole diameter ratio should not be too large. The long mold core is easy to break and deform. The distance between the hole and the outer edge of the product is preferably greater than 1.5 times the aperture, and the distance between the hole and the hole is preferably greater than 2 times the aperture so that the product has the necessary strength. The hole parallel to the mold opening direction is usually formed by the core or the piercing and inserting on the mold. The hole which is not parallel with the mold opening direction is usually used for the position or the slanting top, without affecting the product use and assembly. Under the premise, the hole in the side wall of the product should be made as far as possible to penetrate and insert the hole.
6. Boss: The boss is usually used for the shaft-hole form of two plastic products, or the assembly of self-tapping screws. When the BOSS is not very high and it is ejected on the mold by the cylinder, it does not need to be inclined. When the BOSS is very high, it is usually added with a cross rib on the outer side. The cross rib usually has a slope of 1-2 degrees, and the BOSS also needs to be inclined. When the BOSS and the column are matched, the matching clearance is usually taken from the assembly gap of 0.05-0.10 on one side, so as to be suitable for the position error generated during the processing of each BOSS. When BOSS is used for the assembly of self-tapping screws, the inner hole is 0.1-0.2 smaller than the single side of the self-tapping screw so that the screw can be locked. When assembling with M3.0 self-tapping screws, the inner hole of BOSS is usually Ф 2.60-2.80.
7. Insert: When the existing metal or plastic part is re-formed in the mold, the existing part is called an insert. When the plastic product is designed with inserts, it is necessary to consider that the insert must be completely, accurately and reliably positioned in the mold, and also consider that the insert must be firmly connected to the molded part, and when the rubber is too thin, it is not easy to be firm. Also consider not leaking glue.
8. Surface surface of the product: The surface of the plastic product can be smooth surface, fire pattern, etched surface and engraved surface of various patterns. When the depth of the grain is deep and the number is large, the die resistance is large, and the draft angle is correspondingly increased.
9. Text: The surface of the plastic product can be either convex or concave. It is easy to make the corresponding concave cavity on the mold. It is difficult to make the convex shape on the mold.
10. Thread: The thread on the plastic part is usually not very high in precision, and a special thread-removing mechanism is needed. For the precision requirement, the structure can be simplified into a structure that can be demoulded.
11. Support surface: Plastic products usually do not use the whole surface as the support surface, but instead make the support by bosses, bumps and ribs. Because plastic products are difficult to achieve the entire larger absolute plane, it is easy to deform and warp.
12, the assembly form of plastic products: 1. Ultrasonic wire bonding assembly method, which is characterized by easy to do on the mold, but the special ultrasonic machine is required in the assembly process, the cost is increased, and can not be disassembled. The cross section of the ultrasonic line is usually made into a triangle of 0.30 width and 0.3 height, and is interrupted by 2 mm in the length direction of 5-10 MM. 2. Self-tapping screw assembly method, which is easy to do on the mold, but increases the assembly process and costs. Increase, disassembly trouble; 3. Hook-clamp assembly method, which is characterized by complex mold processing, but easy to assemble, and can be repeatedly disassembled and used multiple times. There are various forms of hooks. It is necessary to avoid that the local glue position is too thick at the hook, and it is also convenient to consider the mold at the hook. The hook should be suitable for the tightness of the fit, and the assembly and disassembly is convenient. The mating surface is suitable for the fit, and the other surfaces are appropriately left. 4. BOSS shaft-hole form assembly method, which is characterized by convenient mold processing, easy assembly and convenient disassembly, but its disadvantage is that the assembly is not very firm.
13. Tooth: The matching surface of the two plastic products usually has a tooth mouth. The depth of the tooth hole is usually about 0.8-2.5, and the left side has a gap of about 0.1. When the depth is deep, the slope is 1-5 degrees. Take 2 degrees, and the depth is not shallow. The upper and lower mating faces of the teeth are usually fitted.
14, the beautiful line: the plastic surface of the two plastic products usually do beautiful lines, the width of the beautiful line often takes 0.2-1.0, depending on the overall size of the product.
15. Surface treatment methods for plastic products: Commonly used are fuel injection, silk screen printing, hot stamping, printing, electroplating, engraving, etching, polishing, color addition, etc.
16. Commonly used metal materials are: stainless steel, copper alloy, spring steel, spring, aluminum alloy, zinc alloy.
17. Common anti-rust methods for metal materials: electroplating, anti-rust oil, anti-rust paint.
I believe that everyone here has a certain understanding of the design points of ultrasonic plastic welding machine products, then today Dongguan ultrasonic plastic welding machine manufacturers here will not talk to everyone, if you still have questions, Just contact us directly by phone, we will contact you in the first time.

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