38results about How to "Prevent shredding" patented technology

The invention discloses a paper shredder. The paper shredder comprises a box body; the box body is provided with a strip-shaped opening for charging paper; the box body comprises an upper box body anda lower box body; the lower part of the upper box body is opened; the upper part of the lower box body is opened; the upper box body and the lower box body move in a manner of being matched with eachother; the lower box body is rotationally connected with two pairs of connecting rods; the other end of each connecting rod is connected with a slider; the upper box body is provided with linear sliding chutes; each slider is arranged inside the corresponding sliding chute; each pair of connecting rods is rotationally provided with one rotating shaft; an elastic body is arranged between the upperbox body and the lower box body; an output shaft of a motor is provided with a first gear; the two rotating shafts are separately provided with a second gear and a third gear; the upper box body is rotationally provided with a fourth gear; the two sides of the fourth gear are meshed with the first gear and the second gear; the first gear is meshed with the third gear; when the upper box body is pressed downwards, the fourth gear is separated from the second gear, and the first gear is separated from the third gear. The paper shredder disclosed by the invention can make each rotating shaft bereleased from transmission quickly when a foreign material is entangled into the paper shredder.

The invention discloses a paper shredder. The paper shredder comprises a box body; the box body is provided with a strip-shaped opening for charging paper; the box body comprises an upper box body anda lower box body; the lower part of the upper box body is opened; the upper part of the lower box body is opened; the upper box body and the lower box body move in a manner of being matched with eachother; the lower box body is rotationally connected with two pairs of connecting rods; the other end of each connecting rod is connected with a slider; the upper box body is provided with linear sliding chutes; each slider is arranged inside the corresponding sliding chute; each pair of connecting rods is rotationally provided with one rotating shaft; an elastic body is arranged between the upperbox body and the lower box body; an output shaft of a motor is provided with a first gear; the two rotating shafts are separately provided with a second gear and a third gear; the upper box body is rotationally provided with a fourth gear; the two sides of the fourth gear are meshed with the first gear and the second gear; the first gear is meshed with the third gear; when the upper box body is pressed downwards, the fourth gear is separated from the second gear, and the first gear is separated from the third gear. The paper shredder disclosed by the invention can make each rotating shaft bereleased from transmission quickly when a foreign material is entangled into the paper shredder.

The invention provides a protective film, comprising: a protective film layer; a UV (ultraviolet) hard rubber layer combined to the protective film layer; an application UV soft rubber layer combined to the UV hard rubber layer; an application base layer combined to the application UV soft rubber layer; an application viscose layer combined to the application base layer; a release layer combined to the viscose layer; the hardness of the application UV soft rubber layer is <1H. By coating the bottom of the UV hard rubber layer with one UV soft rubber layer, the hardness of an application layer decreases gradually from top to bottom with overall hardness of the application layer decreased; rebound of the protective film is prevented by using memory function of the viscose layer and UV soft rubber layer that are hot-pressed, and shredding of UV face corners is effectively prevented. Experimental results show that the protective film has good hot-pressing performance and has lasting shape performance after being hot-pressed. The invention also provides a preparation method of the protective film.

The invention relates to the technical field of packaging structures, and discloses a packaging structure and a manufacturing process of the packaging structure. The packaging structure is provided with a tearing strip, wherein tearing lines are arranged on the front surface and the back surface of the tearing strip at intervals, the tearing lines are of front-back half-penetrating structures, thetearing lines on the front surface of the tearing strip and the tearing lines on the back surface of the tearing strip are arranged in a staggered mode, and the tearing lines on the back surface arelocated on the outer sides of the tearing lines on the front surface. According to the packaging structure, the tearing lines with the front-back half-penetrating structures are arranged on the frontand back surfaces of the tearing strip at intervals, and therefore the packaging structure is not prone to generating burrs in the tearing process, and the appearance is attractive; and the tearing lines on the front surface of the tearing strip and the tearing lines on the back surface of the tearing strip are arranged in a staggered mode, the tearing lines on the back surface are located on theouter sides of the tearing lines on the front surface, and therefore even if the burrs are generated in the tearing process, the burrs are generated on the outer side of the packaging structure so that the burrs cannot be seen easily, the appearance of the packaging structure is effectively guaranteed, and the potential safety hazards caused by the burrs are eliminated.

In the present invention a rod (15) is inserted into a bottomed cylinder (10) filled with operating oil, and a hydraulic damper (30) that absorbs pressing force in the direction causing the cylinder (10) and the rod (15) to retract relative to one another is provided in the cylinder (10). A cogwheel-shaped retaining ring (42) is formed integrally with an oil seal (40) sealing the end opening of the cylinder (10), thereby preventing a dust lip (40c) provided at the inner circumference of the oil seal (40) from being pulled into a center hole of the cogwheel-shaped retaining ring (42) by relative axial movement or relative tilting of the rod (15) and the cylinder (10).

The invention discloses a crayfish shelling apparatus with a flushing function, comprising a fixing platform, a shell collection tank, a mixing tank and a meat washing tank. A slide plate is fixedly connected to the surface of the upper end of the fixing platform, a first slider and a second slider are slidably connected inside the transverse plate sequentially from right to left; a support tableis fixedly connected to the right surface of a connection bar; a third gear and a second gear are connected in engaged manner; a threaded bar is passed sequentially through the support table and the third gear from outside to inside; a vertical tool is welded to the right lower end of a cover plate; the cover plate is slidably connected to the right end of the connection bar; rollers are rotationally connected to the surface of a holding plate; a telescopic bar is fixedly connected to the lower end of the first slider. The crayfish shelling apparatus herein allows crayfish head shells and tails to be conveniently separated and removed, helps conveniently collect shells and tails in classified manner, helps conveniently fully mix and wash the tails, and helps provide improved working efficiency.

A sampling device for microbial detection of raw meat samples disclosed by the present invention is characterized in that it includes a working platform, a raw meat disinfection device and a raw meat grinding device. The net barrel is provided with a first opening, and a cutter is arranged in the casing, and the cutter is matched with the first opening. The blocks are rotationally connected, the lower end of the shell is provided with a nozzle, the raw meat grinding device includes a bracket, a grinding pestle and a sterile mortar, the upper end of the grinding pestle is connected to the bracket by sliding, the lower end of the grinding pestle is matched with the sterile mortar, The raw meat disinfection device and the raw meat grinding device realize the automatic sampling and grinding of raw meat, with a high degree of automation and reduced labor intensity.