9results about How to "Improve joint strength" patented technology

This invention relates to the field of molding and joining equipment for plastic sheets, specifically to a far-infrared hot-melt overlapping plastic box forming device, comprising a frame, a lower pressure mold fixedly connected to the frame, and a pressing mechanism. The pressing mechanism is disposed above the lower pressure mold and can move in a direction perpendicular to the surface of the lower pressure mold to press the joint of the sheet. A first clamping mechanism and a second clamping mechanism are respectively disposed on both sides of the lower pressure mold, which are used to clamp the two sections of the sheet to be joined. This invention, by fixing the first clamping mechanism and rotatably disposing of the second clamping mechanism, uses a rotating shaft to drive the second clamping mechanism to rotate around the axis, so that the sheet held by the second clamping mechanism automatically changes its spatial posture during the rotation, and drives the unconstrained sheet to move synchronously, thereby automatically converting the sheet from the initial enclosed state to a flat enclosed state that is easy for hot-melt pressing.

The utility model relates to an adhesive film transportation tool with a jointing function, which comprises power components arranged on a frame and a workbench arranged on the frame, and the power components are uniformly distributed on two sides of the workbench; the tool further comprises a hot pressing assembly, a cutting assembly and a fixing block connected to the frame. The hot pressing assembly and the cutting assembly are both arranged on the fixing block and act on the workbench. A sensing plate is arranged on the surface of the workbench. The tool further comprises a controller. Through interlocking control of the integrated induction plate and the controller and linkage operation of the power assembly, the hot pressing assembly and the cutting assembly, the manual intervention link is eliminated, the production takt is completely matched with a continuous production line, and the productivity is improved.

The dissimilar metal material bonding structure (1) is mainly composed of a first bonding material (3), a second bonding material (5), and a three-dimensional structure (7). The three-dimensional structure (7) is bonded to the first bonding material (3). The second bonding material (5) fills the space (9b) of the three-dimensional structure (7) and is geometrically integrated with the three-dimensional structure (7). As described above, the three-dimensional structure (7) and the first bonding material (3) are bonded through an interface (11). In addition, the second bonding material (5) fills the space (9b) of the three-dimensional structure (7) and is integrated. The first bonding material (3) and the second bonding material (5) are bonded through the three-dimensional structure (7). At this time, since the second bonding material (5) fills the space (9b) of the three-dimensional structure (7), it is firmly bonded and integrated through an anchoring effect. In addition, by inducing a metallurgical reaction at the interface between the first bonding material and the second bonding material, the bonding (tensile) strength can be improved.

The present application realizes a thermistor in which a complex including a plurality of particles composed of a metal oxide is used as a thermistor layer, and a high bonding strength is obtained between the thermistor layer and electrodes. A thermistor is a thermistor in which a structure including a thermistor layer and two electrodes is arranged on a base layer, the base layer includes a resin component, the thermistor layer includes a plurality of particles composed of a metal oxide including at least one first metal element, and a complex existing between the plurality of particles and including an amorphous phase of the same metal element as the first metal element, the first metal element including at least one of Mn and Ni, the two electrodes are composed of at least one second metal element selected from Cu, Al, Ag, and Ni, and a bonding layer in which the second metal element and the resin component are diffused in the complex exists between the two electrodes and the thermistor layer.

This invention relates to the field of laser welding equipment technology, and discloses a laser welding device and process for steel structure construction. The laser welding device for steel structure construction includes a welding machine body, a moving module located at the top of the welding machine body, a laser head located outside the moving module, and a spraying mechanism located at the bottom of the moving module. The spraying mechanism includes a nozzle located at the bottom of the moving module, an ultrasonic atomizer located on the inner wall of the nozzle, a delivery pipe located in the middle of the nozzle, a negative pressure pipe located at the bottom of the moving module near the nozzle, an inner rotating shell located outside the nozzle, and an outer rotating shell located near the inner rotating shell. By setting up the spraying mechanism, on-site mixing and atomization spraying of flux and welding material powder are achieved, reducing laser reflectivity, promoting rapid formation of the molten pool and enhancing the penetration effect, thereby improving welding quality and joint strength.

The application provides a copper-based alloy for brazing of hard alloy and a preparation method and application thereof, and relates to the technical field of brazing. Specifically, the copper-based alloy comprises the following elements in percentage by weight: Zn 25-40%, Mn 1-10%, Si 0.1-2%, Co 0.1-2%, Cr 0.1-1%, Zr 0.01-0.5%, Nb 0.01-0.5%, and the balance of Cu. Meanwhile, the application provides a specific preparation process of the copper-based alloy. By optimizing the relative content of zinc and manganese elements, and by adding silicon, cobalt, chromium, zirconium and niobium elements to refine the alloy structure, the copper-based alloy has good mechanical strength, welding performance and wetting performance when brazing hard alloy workpieces, and has a good application prospect.

The utility model discloses a modularized ALC (autoclaved lightweight concrete) plate mounting structure, which comprises a splicing frame, a plurality of connecting pieces and a plurality of connecting pieces, the first inserting reinforcing steel bars and the second inserting reinforcing steel bars are inserted into the splicing frame and the ALC plates at intervals in a penetrating mode; and the reinforcing assemblies are arranged on at least one side of the splicing frame and comprise plugs and drawstrings, the plugs are arranged at the ends of the first inserting steel bars and the second inserting steel bars and press the first inserting steel bars and the second inserting steel bars into the splicing frame, the drawstrings are in butt joint with the adjacent plugs, and the middles of the drawstrings are positioned on the surface of the splicing frame through positioning columns. Modularized installation is adopted for the ALC plates, on the basis that the splicing frame and the ALC plates are internally inserted and externally sleeved, the splicing frame and the ALC plates are obliquely inserted in a penetrating mode through the two inserting steel bars, the modularized splicing strength is further improved, inward-pressing elastic force is applied to the outer sides of the plugs through the drawstrings arranged in a wavy mode, pre-tightening force is formed on the inserting steel bars, and the splicing strength is improved. Limiting and disengagement prevention of the inserted steel bars are achieved, and the strength of the splicing structure is further improved.

This utility model relates to the field of waterproof fabric production technology, and in particular to a base splicing device for producing non-reflective PVC waterproof fabric. It includes a workbench, with a T-shaped plate and a lifting plate respectively positioned above the workbench. A movable seat slides vertically above the lifting plate, and a pair of sliding seats slide horizontally on the lifting plate. A pair of vertical plates are fixedly connected to the bottom surface of the sliding seats, and a rotating roller is rotatably connected to the vertical plates. A support plate and the lifting plate are fixedly connected to the same cylinder. The device also includes a traction component, which causes the movable seat to drive the two sliding seats to slide horizontally synchronously; and a drive component, which drives the movable seat to slide vertically. Compared to existing splicing methods, this utility model, through the traction and drive components, effectively eliminates surface wrinkles, ensuring that the spliced ​​waterproof fabric seam is flat, tight, and bubble-free, thus improving the bonding strength and appearance quality of the product.

The utility model discloses a kind of PE yarn ultrasonic wire connecting device, including base, lifting adjusting mechanism, lifting seat, rotary table, double-shaft moving mechanism, ultrasonic welding head, cooling air pipe and wiring table;The movable end of rotary table is connected with double-shaft moving mechanism, ultrasonic welding head is located on double-shaft moving mechanism, wiring table is located on the base below ultrasonic welding head, wiring table top surface is equipped with wire clamping groove, wire clamping groove is used to place two PE yarns to be ultrasonically welded, cooling air pipe is obliquely arranged in the side end of the ultrasonic welding head.The ultrasonic welding head of the utility model can contact with the PE yarn in wire clamping groove, to make PE yarn end portion local melting by high-frequency vibration and adhere, wire clamping groove can limit two PE yarns and align, avoid PE yarn sliding or misplacement in welding process, after welding is completed, cooling air pipe can directional cooling to yarn fusion joint by cooling airflow, to shorten solidification time, improve wiring efficiency.