Please select the most similar patent number from A, B, C and D. Which number is?
Disclosed is a die cutting machine for preventing a nesting defect caused by electrostatic adsorption of materials to a machine, characterized in that: a feeding end of the die cutting machine is provided with an antistatic rope for discharging static electricity from a material strip, and the antistatic rope is located beside a position where the material strip passes and is in contact with the material strip; the surface of a lower template of the die cutting machine is provided with a plurality of parallel ribs, and a gap is reserved between the top ends of adjacent ribs so as to reduce the friction between the material strip and the lower template; a discharging end of the die cutting machine is provided with a material lifting roller mounted above a pulling-down shaft,the material lifting roller is located, in a horizontal direction, on the outer side of the contact part of an pulling-up shaft and the pulling-down shaft and is parallel to the width direction of the material strip, the material strip extending from the pulling-down shaft passes over the material lifting roller, and the material strip attached to the pulling-down shaft is lifted. The die cutting machine of the present invention reduces the negative impact of the electrostatic adsorption force on the material correction movement during the positioning process of a nesting hole, and can complete high-precision machining.
A: Disclosed is a rapier tape stamping die with stable punching. The rapier tape stamping die comprises an upper die set and a lower die set. The upper die set comprises an upper die plate (2), a punch fixing plate (3), a punch (4) and a discharge plate (5), wherein the upper die plate (2) is connected to a die handle (1), the punch fixing plate (3) is mounted on a lower surface of the upper die plate (2), an upper surface of the discharge plate (5) is connected to a lower end of a discharge spring (11), an upper end of the discharge spring (11) is fixed inside the punch fixing plate (3), and the punch (4) penetrates the discharge plate (5) and the punch fixing plate (3) and a top end thereof is connected to the lower surface of the upper die plate (2). The lower die set comprises a female die (7) and a lower die plate (9), wherein the female die (7) is mounted on an upper surface of the lower die plate (9), the female die (7) is fixed to the lower die plate (9) by means of a retaining pin (8), and a hole channel for a head portion of the punch (4) to pass through is provided in the female die (7); and a guide pin (6) penetrates the discharge plate (5) and the punch fixing plate (3), a top end of the guide pin (6) is connected to the lower surface of the upper die plate (2), and a lower end of the guide pin (6) is inserted into the female die (7). The rapier tape stamping die with stable punching can prevent situations, such as that where a fiber cannot be cut off by means of punching and shearing or where a fiber tears, from occurring to a rapier tape during punching, and can prevent unstable punching due to the waggling of a material tape during punching.
B: Disclosed in the present application are an automatic roll replacing device, and winding equipment. The automatic roll replacing device comprises: a mounting frame; an unwinding mechanism, comprising an unwinding shaft connected to the mounting frame in such a manner that the unwinding shaft can rotate around its own axis; a spare material mechanism, comprising a spare material shaft having a contact end and a material pushing member providing an axial pushing force for a spare material roll on the spare material shaft, the spare material shaft being connected to the mounting frame in such a manner that the spare material shaft can rotate around the rotation axis, when the spare material shaft is located at a material pushing position, the contact end contacting the unwinding shaft, and the material pushing member being controlled to push the spare material roll on the spare material shaft to transfer to the unwinding shaft; and a strip connection mechanism, provided on the mounting frame, and used for cutting off a work material strip unwound from the unwinding shaft and connecting the cutoff work material strip to the spare material roll. According to the automatic roll replacing device provided by the present application, the use of the spare material shaft and the material pushing member implements pushing of a spare material roll on the spare material shaft to the unwinding shaft, and there is no need to provide two unwinding mechanisms, thereby greatly simplifying the structure of the automatic roll replacing device, and reducing the occupied space.
C: A pole feeding apparatus (100), comprising a sheet inserting mechanism (10), a cutting mechanism (20) and a feeding mechanism (30) successively arranged along the conveyance direction of a material strip (300). The sheet inserting mechanism is used to clamp the material strip. The cutting mechanism is used to cut the material strip. After the material strip is cut, the sheet inserting mechanism further conveys the material strip in a direction close to a winding needle (200) or the cutting mechanism moves in a direction away from the winding needle, so that the leading end of the material strip is exposed to the cutting mechanism. The feeding mechanism is used to clamp the leading end of the material strip and move in the direction close to the winding needle, so that the leading end of the material strip is close to and fed into the winding needle. Further disclosed is a winding device.
D: Disclosed is an automatic die-cutting mechanism, comprising a rack, a die-cutting assembly disposed on the rack, a first motor disposed on the rack and a second motor connected to a first adjusting assembly, the first adjusting assembly being used for adjusting the distance between a second transmission roller and a first driving roller. The automatic die-cutting mechanism of the present invention has the following beneficial effects: 1. the distance between a second transmission roller and a first driving roller may be adjusted, that is, the moving distance of a substrate reaching a preset die-cutting position is temporarily adjusted, achieving a speed adjusting effect, and the operation means is simple and convenient, and regulation and control are accurate; 2. the attaching firmness of the substrate and the first driving roller is improved; and 3. a die does not need to be used in the present invention, and for the substrate, the cutting of any pattern may be achieved by means of the first driving roller cooperating with a three-axis linkage function of a die-cutting assembly, and the advantages of having low costs and high efficiency for die-cutting of small-batch products.
Answer: D