6results about How to "Automatic replacement" patented technology

The application discloses a kind of live wire electric fire simulation experiment device, including power supply, sliding rheostat, mounting bracket, experimental live wire and sensor;Power supply, sliding rheostat, experimental live wire are sequentially connected in series;Mounting bracket includes balance, the top of balance is fixed with two mounting seats, two mounting seats are slidably sleeved with stand, two stands are fixed with wire fixing mechanism, experimental live wire is detachably installed on stand by wire fixing mechanism;One stand is fixedly installed with insulation layer cutting mechanism, another stand is fixedly installed with wire changing mechanism, two wire fixing mechanisms are arranged between insulation layer cutting mechanism and wire changing mechanism. When using the application to carry out live wire fire simulation experiment, it is not necessary to manually replace the experimental live wire, and the operation is simple, which helps to improve the experimental efficiency.

The invention discloses a programmable constant-temperature and constant-humidity test box based on uncooled infrared machine core assembly processing, and relates to the technical field of constant-temperature and constant-humidity test boxes, the programmable constant-temperature and constant-humidity test box comprises an experiment box, a placement groove is formed in the experiment box, a cover door is hinged to the outer side of the experiment box, and the programmable constant-temperature and constant-humidity test box further comprises a sensor assembly arranged in the cover door, the fixing plate is fixedly connected to the inner wall of the cover door, the outer side of the fixing plate is fixedly connected with a temperature sensor, an overtemperature protection sensor and a humidity sensor, the humidity sensor is sleeved with wet bulb gauze, and the outer side of the fixing plate is fixedly connected with a water tank; when the movable plate cleans the temperature sensor and the overtemperature protection sensor, the detection assembly detects the wet bulb gauze on the humidity sensor and detects whether the water absorption of the wet bulb gauze is kept within a specified range, and when it is detected that the water absorption exceeds the standard, the wet bulb gauze on the humidity sensor is automatically replaced through the replacement mechanism.

The utility model relates to a preservative film rewinding device. A second guide inclined plate is matched with a moving assembly to facilitate replacement of a rewinding drum, when the rewinding drum is replaced, a reciprocating lead screw controls a rewinding structure to move to a preset position, an electric push rod controls a moving plate to move in the direction of the second guide inclined plate, a second limiting inclined block pushes a connecting block, a Y-shaped supporting frame in the vertical state inclines, and the rewinding drum is replaced. After the rewinding drum slides into the clamping groove, an electric push rod controls a movable plate to be away from a second guide inclined plate, when a torsional spring is reset, a Y-shaped supporting frame is synchronously driven to be reset to be in a vertical state, the electric push rod drives the movable plate to move towards the rewinding structure, and then the rewinding drum is driven to move towards the rewinding structure; and through cooperation of the second guide inclined plate, the moving assembly and the rewinding structure, the rewinding barrel can be automatically replaced.

The utility model relates to a semi -automatic probe contact test machine belongs to chip production test technical field, in order to solve the effective contact area between probe end and chip pad in long -term continuous use process is reduced significantly, the contact resistance between both is increased sharply and stability is poor, forms local concentrated heating, leads to the problem that the precision circuit, metal connection and semiconductor structure in chip interior are damaged by heat, the invention includes test platform and the mobile piece of installation in test platform one side, one side of mobile piece is provided with buffer seat, and the probe platform is installed in one side of buffer seat, the utility model is through setting up memory alloy in the electrically conductive cylinder, utilizes the characteristics that probe wear leads to contact resistance increase, local concentrated heating, makes memory alloy heat phase change and pulls the probe automatic retraction, and the contact of probe and chip pad is disconnected quickly, avoids the chip internal circuit and melts pad from high temperature burnout fundamentally, significantly improves the safety and reliability of chip test process.

This invention provides a cutting device capable of automatically changing plates. A cutting device for cutting a workpiece using a cutting tool includes: a chuck table for holding a plate with grooves formed by the cutting tool; a cutting unit having a spindle and a mounting flange fixed to the front end of the spindle for mounting the cutting tool; and a changing device for changing the cutting tool mounted on the mounting flange and stored in a tool storage section, and for changing the plate placed on the chuck table and stored in the plate storage section. The changing device has a holding section for attracting and holding the cutting tool and the plate, the holding section having: a tool attraction pad that contacts the cutting tool or a base for fixing the cutting tool to attract and hold the cutting tool; and a plate support section that protrudes outward from the front end of the tool attraction pad to support the plate.

The application belongs to the technical field of aluminum alloy casting, and particularly relates to a metal mold for aluminum alloy hardware casting, which comprises an upper mold base, a lower mold base, a cooling mechanism and a liquid changing mechanism. Through linkage and cooperation of the cooling unit and the liquid changing mechanism, the liquid cooling is sprayed through the liquid injection hole, and the temperature is uniformly extruded by the sealing plate, so that the temperature gradient of the traditional one-way water channel is eliminated, the mold cooling rate is consistent, the casting defects are effectively improved, the cooling efficiency is improved, the intelligent manufacturing production line demand is adapted, the automatic and rapid discharge of the heated cooling liquid is realized through the liquid changing column and the liquid changing pipe in the liquid changing mechanism, the through hole is arranged around the liquid injection hole, the heated cooling liquid is discharged quickly nearby, the contact time of the heated cooling liquid with the low-temperature cooling liquid is shortened, the automatic and rapid replacement of the heated cooling liquid is realized, the continuous supply of the low-temperature cooling liquid is ensured, the cooling stability is further improved, and the intelligent manufacturing efficient production is facilitated.