34results about How to "Reduced likelihood of wrinkling" patented technology

The invention relates to an NC bending core head for a thin walled tube of aluminum alloy with a major diameter and a design method thereof, wherein the core head comprises an core head(2), a mandrel core pin(1) and a connection member between the core heads(3). Further, the core heads are connected in a ball-and-socket structure manner. The eccentricity delta of the ball centre of the eccentric core (2) in the internal of the core head is delta=h / k, wherein h is the distance between the ball centre of core head and the large end of the core head, and k is the thickness of the core head. The inside radius d0' and the outer radius d0 of the core head, and x2 corresponding to the largest angle theta 2 of the core are determined, so that the relationship between the core distance h and the largest angle theta 2 of the eccentric core is established. Through finite element modeling, the scope of the largest angle theta 2 between the eccentric cores (2) is determined, and furthermore, the value range of h is determined. According to invention, an interference area between rotary core heads, and excess interference between the core heads and the tubing outside arc surfaces are reduced, so as to be suitable for bending and shaping of the tubing under various bending radii. Besides, the possibility of tubing wrinkling and the degree of thinning could be decreased, without increasing the flat degree of tubing.

The invention discloses a film adhesion device for film active release. The device is characterized by comprising a supporting shaft and a driving device, wherein the supporting shaft is used for supporting an adhesive film roll; and the driving device drives the supporting shaft to rotate. The film adhesion device for the film active release changes the conventional mode of pulling an adhesive film by a film clamping device to drive the adhesive film roll to rotate so as to release the adhesive film into a mode of driving the adhesive film roll by the driving device to rotate so as to release the adhesive film actively. When the adhesive film is pulled by the film clamping device to cover a wafer, a pulling force applied to the adhesive film by the film clamping device can be quite small, so that the adhesive film cannot be deformed by stretching, and the quality of film adhesion is improved.

The invention provides a beam part drawing mold. The beam part drawing mold comprises an upper mold base, a lower mold base, a split concave mold arranged on the upper mold base, a split convex mold arranged on the lower mold base, two flanged convex molds and two flanged concave molds; two drawing ribs are oppositely arranged on two sides of the split concave mold; the extending direction of the drawing ribs is the same with the extending direction of the split concave mold; the two flanged convex molds are respectively arranged at two ends of the split concave mold; the two flanged concave molds are respectively arranged at two ends of the split convex mold; the two flanged concave molds are correspondingly matched with the two flanged convex molds one to one; flanged molding surfaces are arranged at one ends, far from the split concave mold, of the flanged convex molds; and matching surfaces matched with the flanged molding surfaces are arranged at one ends, far from the split convex mold, of the flanged concave molds. The beam part drawing mold can greatly reduce the corrugation possibility of two ends, is better in subsequent positioning effect, and meanwhile, can improve the material utilization rate and the forming effect.

The invention discloses a tube bending inner supporting device and a tube bending method. The tube bending inner supporting device comprises a load mechanism, a steel wire rope, an elastic core die, a pushing die and a pushing part. The load mechanism is provided with a stretchy rod which contracts to one side. One end of the steel wire rope is connected with a stretchy end of the stretchy rod and the other end of the steel wire rope is connected with a top disc. The elastic core die, the pushing die and the pushing part sequentially and movably penetrate through the steel wire rope. One end of the elastic core die is connected with the top disc in an abutted mode. The pushing part is detachably connected with the pushing die and retracts through the stretchy rod of the load mechanism. The top disc is matched with the steel wire rope to pull the elastic core die and the pushing die tight, so that the elastic core die expands in an inner cavity of a tube in a radial mode and is fully contacted with the inner wall of the tube. According to the tube bending inner supporting device and the tube bending method, the core die is matched with the inner wall of the tube in a self-adapting mode, crinkling is avoided and manufacturing and use cost can be greatly reduced.

Embodiments of the present application provide a display device. The display device includes: a main body, which is cylindrical and has at least one end part, the end part is used to carry the display device so that the display device is in a standing state; a flexible screen assembly, one end is arranged in the main body, the The flexible screen assembly can be accommodated in the main body or protruded from the main body to the outside of the main body; a support assembly, one end of which is arranged in the main body, and the other end of the support assembly and the other end of the flexible screen assembly a fixed connection, the support assembly can be received in the main body or protruded from the main body to the outside of the main body; and a drive assembly disposed in the main body, the drive assembly is used for driving the support assembly The flexible screen assembly moves synchronously to extend from the inside of the main body to the outside of the main body or to be received in the main body from the outside of the main body. The embodiments of the present application can enrich the characteristics of the display device.

The invention provides a multi-pole-set battery. The multi-pole-set battery comprises a battery case and a battery case upper cover, wherein the battery case is used for containing a battery core, and the battery case upper cover is used for packaging the battery case; the battery case upper cover comprises a positive pillar, a negative pillar and the battery core, the battery core is placed into the battery case; the battery case upper cover further comprises at least one separation board, and the separation board is used for partitioning the battery case into at least two containing spaces; the battery core at least comprises two pole sets, each pole set comprises a positive pole lug set and a negative pole lug set, the pole sets are connected in parallel by the pole lug set of the pole sets through a pole set connecting component, and each pole set is respectively placed into the containing space; and the pole set connecting component is correspondingly connected with the positive pillar and the negative pillar of the battery case upper cover. The invention further provides a manufacture method of the multi-pole-set battery.

The invention discloses a polyester cloth dyeing process, comprising the following steps: S1: gray cloth desizing. S2: Gray fabric pre-shrinking; S3: Use a leveling machine to level the finished fabric; S4: Pre-set the leveled fabric, and use a cloth loading machine to import the fabric into the setting machine during the pre-setting process. Pre-setting treatment, the used sizing liquid during setting includes the following parts by weight: 20-30 parts of softening agent; 30-40 parts of disodium hydrogen phosphate; 70-80 parts of plasticizer; 10-30 parts of glyceryl tristearate 20 parts; 30-34 parts of polytetrafluoroethylene particles; S5: carry out alkali reduction treatment on the pre-shaped cloth; S6: carry out the finalizing treatment on the cloth after the alkali reduction is completed; The cloth is dyed; S8: use a setting machine to perform a post-setting treatment on the dyed cloth with a setting liquid; obtain the finished cloth through the above eight steps. The invention has the advantage of improving the setting effect of the polyester cloth.

The invention discloses a process for forming side boards of backrests of automobile seats, and relates to technologies for forming hardware. The process includes a downward flanging procedure. The downward flanging procedure includes steps of firstly, building a mathematical model of drawing rounded corners of drawing rounded corner parts of sheets and wrinkling regions on sheets in a downward flanging procedure; secondly, determining drawing rounded corner magnitude ranges and optimal drawing rounded corner magnitude values by the aid of the mathematical model; thirdly, drawing rounded corners according to the optimal drawing rounded corner magnitude values determined in the second step; fourthly, downwardly flanging the sheets along the drawing rounded corner parts. The magnitude of each drawing rounded corner is used as an independent variable in the mathematical model, the area of each wrinkling region is used as a dependent variable in the mathematical model, and the area of each wrinkling region is the sum of the areas of a plurality of wrinkling sub-regions; the mathematical model is built by the aid of data acquired in field tests. The areas of the wrinkling regions are minimized under the effect of the determined drawing rounded corner magnitude ranges and the determined optimal drawing rounded corner magnitude values. The method has the advantages that the mathematical model of the drawing rounded corners and the wrinkling regions is built via the tests, the drawing rounded corner magnitude ranges and the optimal drawing rounded corner magnitude values are determined, and the areas of the wrinkling regions are minimized under the effect of the determined drawing rounded corner magnitude ranges and the determined optimal drawing rounded corner magnitude values, accordingly, the problem of wrinkling of products can be solved, and the quality of the products can be greatly improved.