7results about How to "Moderate tension" patented technology

This utility model relates to the field of peak serve training technology and discloses a peak serve training net, including a base, fixing tubes, fiberglass assembly, and a net. The fixing tubes include front fixing tube A, front fixing tube B, rear fixing tube C, and rear fixing tube D, which are respectively inserted into the four corners of the base and fixed with pins. The fiberglass assembly is inserted into the fiberglass fixing tubes at the outer top of the front fixing tube A, front fixing tube B, rear fixing tube C, and rear fixing tube D, respectively, and the net is hung on the top of the fiberglass assembly. This utility model has a stable and portable structure. The fixing tubes are connected to the base by pins, and the U-shaped ground plug is fixed to the ground. It is wind-resistant and anti-tipping. When folded, it is compact and suitable for fast serve in various scenarios. The serve angle can be adjusted flexibly and accurately.

The utility model relates to the field of belt pressing devices, and discloses a bucket wheel tripper car belt pressing device which comprises a frame, an installation frame is fixedly connected to the upper end face of the frame, a transmission structure is fixedly arranged at the edge position of one side of the installation frame and comprises a transmission motor, and the output end of the transmission motor is fixedly connected with a driving wheel. The outer surface of the driving wheel is in meshed connection with a transmission chain, the other side of the inner surface of the transmission chain is in meshed connection with a transmission wheel, a connecting shaft is clamped to the center of the transmission wheel, and a pressing structure is in bolted connection with the center of the lower end face of the mounting frame and comprises a fixing frame. A mounting base is fixedly arranged at the edge of the upper end face of the fixing frame. According to the utility model, hydraulic oil in the hydraulic cylinder is controlled, and the hydraulic rod slides in the hydraulic cylinder, so that the connecting seat, the connecting rod, the connecting rod and other parts are driven to move, and the pressing force on a target part is adjusted by the pressing barrel on the mounting shaft.

The utility model relates to the field of adhesive tape winding, especially high -performance packaging adhesive tape production winding tensioner, including tensioning adjusting box, the inside fixed mounting of tensioning adjusting box has support frame, the inboard fixed mounting of support frame has drive module no.

The utility model discloses a raincoat fabric cutting device, which relates to the technical field of raincoat fabric processing, and comprises a rack, a conveying mechanism and a cutting mechanism, the surface of the rack is provided with a control panel, the inner wall of the rack is movably clamped with two limiting strips for limiting, the opposite surfaces of the two limiting strips are fixedly connected with supports for supporting, and the conveying mechanism is arranged on the rack. A connecting strip is arranged in the rack, a push rod is attached to the surface of the fabric through the elasticity of two reset springs and is in a straight state, in order to avoid excessive stretching, a handle is held to drive a screw to rotate, and a sliding block connected to the surface of the screw in a sleeving mode moves under the action of threads in the rotating process of the screw; the sliding block moves to drive the fixed connecting strip to move together, the connecting strip drives the push rod to move, at the moment, flexible adjustment can be conducted according to the fabric tensioning state, it is ensured that the fabric always keeps proper tension in the cutting process, fabric wrinkling or tensile deformation is avoided, and therefore the cutting precision is improved.

The utility model relates to the technical field of film production, and discloses a film stretcher for film production, which is characterized in that positioning rotating rods are rotatably connected to the inner walls of the two sides of the top of a rack, linkage rods are slidably sleeved on rod bodies of the positioning rotating rods, and guide rod frames are rotatably connected to the outer walls of the two sides of the extension end of each linkage rod; limiting rollers are rotationally connected to the inner walls of the two sides of the tail end of the middle of the rack, an expansion support is fixedly connected to the adjacent faces of the limiting rollers on the two sides, and transition rollers are rotationally connected to the inner walls of the two sides of the expansion support respectively. Through the arrangement of the guide rod frame, the limiting roller and the transition roller, the position of the guide rod frame is flexibly adjusted, the limiting roller rotates on the inner walls of the two sides of the tail end of the middle of the rack and is fixedly connected with the expansion support, transverse movement of a film is limited, and deviation is prevented; the transition rollers are installed on the inner walls of the two sides of the expansion support, the advancing direction of the thin film is changed, the thin film is stably transited to the winding link, the stability of the thin film in the winding process is further enhanced, smooth winding work is guaranteed, and the rejection rate is reduced.

The utility model relates to the technical field of galvanized wire straightening, in particular to a drawing and straightening device for galvanized wire production, which comprises a workbench, a straightening mechanism and a tensioning mechanism are arranged on the workbench, the tensioning mechanism comprises a tensioning wheel and an adjusting box, a support frame is arranged between the adjusting box and the workbench, and the tensioning wheel is arranged on the workbench. A lifting hole is formed in the bottom end of the adjusting box, a lifting column is arranged on the lifting hole, a bearing seat is arranged between the lifting column and the tensioning wheel, and a limiting plate is arranged at the top end of the lifting column. At the moment, the elastic supporting mechanism can deform to play a buffering role, overlarge tension can be effectively absorbed, damage caused by the fact that the overlarge tension directly acts on the straightening mechanism or the galvanized wire is avoided, the service life of equipment is prolonged, and the risk that the galvanized wire is broken is reduced.

This utility model relates to the field of high-speed printing thermal materials technology, and in particular to a winding tension adjustment mechanism for high-speed printing thermal materials. It includes an unwinding roller and a tension adjustment component. An antistatic component is located on the side of the tension adjustment component away from the unwinding roller, and a dust removal component is located on the side of the antistatic component close to the tension adjustment component. A pressing component is located on the antistatic component, and a winding roller is located on the side of the antistatic component away from the tension adjustment component. The antistatic component includes a lower housing and an upper housing. A feed inlet is opened on the side of the lower housing and the upper housing close to the tension adjustment component. An ionizer is installed inside both the lower housing and the upper housing. In this utility model, static electricity can be eliminated before the thermal material contacts the winding roller, preventing the thermal material from developing micro-wrinkles or unevenness due to static electricity, which could cause gaps and allow air to enter. This avoids the phenomenon of the outer layer material wrinkling the inner layer material after winding.