Please select the most similar patent number from A, B, C and D. Which number is?
A water jet cutting machine comprises a Y-axis part (1), a Z-axis fixed seat part (2), a Z-axis part (3), a cutting platform (4), a zinc-plated strip (5), a button box (6), a sand box (7), a grinding material feeding device (8) and a cutting head (9). The sand box (7) and the grinding material feeding device (8) form a feeding system. The sand box (7) is composed of an upper hopper (71) and a lower hopper (72) that are connected together by a flange provided with a sealing ring. The upper hopper (71), as a material storage tank, can hold a large amount of grinding material, and the volume of the grinding material in storage can be measured by a sensor. The lower hopper (72) is internally provided with a miniature air cylinder (722); an air cylinder cap (721) moves up and down to close or open the upper and lower hoppers for communication. A sand conveying system provided with a volume control device of the water jet cutting machine avoids wasting sand and gravel during the production process and saves the production cost.
A: Provided is a water jet machining device, comprising a pressure provision system, a jet system, and a feed provision system. The pressure provision system and the feed provision system are separately connected to the jet system. The jet system comprises a sand-mixing chamber and a nozzle. High-pressure water and an abrasive are mixed to form a mixture in the sand-mixing chamber. The jet system also comprises a shaping tube. A first inlet of the shaping tube is in communication with the exit of the sand-mixing chamber. The exit of the shaping tube is in communication with the nozzle. The mixture is injected into the shaping tube from the exit of the sand-mixing chamber at a low speed, forming a central water jet. The pressure provision system also comprises a buffering medium provision mechanism. The buffering medium provision mechanism is in communication with a second inlet of the shaping tube. The buffering medium provision mechanism injects the buffering medium into the shaping tube. The buffering medium sleeves the central water jet. The central water jet sleeved in the buffering medium is ejected out of the nozzle and works on the component to be machined. The water jet machining device of the present invention lowers the wear rate of the nozzle and the sand-mixing chamber, thereby reducing maintenance costs.
B: A high-efficient strip cutting machine, used for cutting a raw material roll core (15), and comprising a workbench (1), a rotating mechanism (2) and a movable cutting mechanism (3). The rotating mechanism (2) comprises a rotating mandrel (4), a drive motor (5) is mounted at one end of the rotating mandrel (4) in a matched mode, and the other end of the rotating mandrel (4) is connected to a support (6); an automatic clamping and fixing device is further provided at the end of the rotating mandrel (4) close to the drive motor (5), and comprises a clamping sleeve (7), a bearing (8), a pushing sleeve (9), a transmission sleeve (10), a clamping and fixing plate (11), an air cylinder (12), and a piston (13) provided in the air cylinder (12). After the raw material roll core (15) is mounted on the rotating mandrel (4) by means of the automatic clamping and fixing device, the raw material roll core (15) is automatically fixed by means of the automatic clamping and fixing device, and the raw material roll core can also be automatically released during discharging; time and labor are saved, the manual fixing and releasing time during feeding and discharging is reduced, and the production and processing efficiency is greatly improved.
C: An automatic edge-tracing device for a laser cutting machine for a sheet material comprises a cutting platform mount (1). A cutting platform (2) is provided at a top end surface of the cutting platform mount (1). A left support (3) and a right support (4) are respectively provided at the left and right sides of the top of the cutting platform mount (1). A left movable block (5) and a right movable block (6) are respectively provided at inner walls of the left support (3) and the right support (4). The left support (3) and the right support (4) are connected by means of a cross rod (9). A power motor (7) is provided at the bottom of the right movable block (6). An output end of the power motor (7) penetrates the right movable block (6) to connect to a rotary shaft (71). The rotary shaft (71) is movably inserted into an inner cavity of a slot (8). The slots (8) are respectively arranged at the inner walls of the left support (3) and the right support (4). Also provided is an edge-tracing method of the automatic edge-tracing device for a laser cutting machine for a sheet material. The automatic edge-tracing device for a laser cutting machine for a sheet material and the edge-tracing method thereof can be operated easily, have high precision, shorten the processing time, improve processing efficiency, and reduce waste of a sheet material resulting from errors in manual alignment.
D: Disclosed is automatic precast concrete component machining equipment, comprising a material-feeding device (1), a first material-conveying device (3), a second material-conveying device (4), a cleaning device (5), and a mold vibrating device (6). The material-feeding device (1) comprises a material feeding supporting seat (11), an upper end of the material feeding supporting seat (11) is provided with a first slide rail (12), a material-feeding hopper (13) is slidably connected to the first slide rail (12); the cleaning device comprises a water tank mechanism (51), a first cleaning mechanism (52), a second cleaning mechanism (53), and a third cleaning mechanism (54); a lower end of the first slide rail (12) is provided with a material storage device (2), the material storage device (2) comprises a supporting frame (21) and a material storage hopper (22) arranged at an upper end of the supporting frame (21); the first cleaning mechanism (52) is arranged on the material storage hopper (22); the first material-conveying device (3) comprises a first conveying frame (31), an upper end of the first conveying frame (31) is slidably connected with a material-conveying hopper (32); the second material-conveying device (4) comprises a second conveying frame (41) and a mold-conveying mechanism (7); the mold-conveying mechanism (7) comprises a plurality of first rollers (71); and the mold vibrating device (6) is arranged on an inner side of the second conveying frame (41). The machining equipment can be used for machining a precast concrete component more efficiently, the structure is simple and new, and the inventiveness is high.
Answer: A