Bread slice delivery device for automatic sandwich packaging machine

A bread slice delivery device for an automatic sandwich packaging machine is characterized in that:

• comprises a base plate, wherein a bread receptacle base is vertically fixed to the upper surface of the base plate, a bread receptacle is placed in the bread receptacle base, the geometric center of the bread receptacle and the geometric center of the bread receptacle base are located on the same line which is perpendicular to the base plate, and the bread receptacle is pushed into or pulled out of the bread receptacle base like a drawer;
• the bread slice delivery device is fixedly provided with a first ball screw-type linear slide platform which is spatially parallel to the bread receptacle and perpendicular to the base plate;
• a first screw nut holder of the first ball screw-type linear slide platform is connected with a first L-shaped bracket, one edge of the first L-shaped bracket is spatially parallel to the axial direction of a first ball screw of the first ball screw-type linear slide platform, and the other edge of the first L-shaped bracket is spatially perpendicular to the axial direction of the first ball screw;
• a first flat carrier plate is connected to the edge, spatially perpendicular to the axial direction of the first ball screw, of the first L-shaped bracket, and the first flat carrier plate is spatially perpendicular to the first ball screw and is spatially parallel to the base plate;
• the first flat carrier plate has a diameter slightly smaller than that of the bread receptacle, is located under the bread receptacle, and is able to move in the bread receptacle along a straight line defined by the geometric center of the bread receptacle and the geometric center of the bread receptacle base;
• the bread slice delivery device is further fixedly provided with a second ball screw-type linear slide platform which is located over the bread receptacle and is parallel to the base plate, and the axial direction of the second ball screw-type linear slide platform is perpendicular to a plane where the axis of the first ball screw-type linear slide platform and the geometric center of the bread receptacle are located;
• a second screw nut holder of the second ball screw-type linear slide platform is connected with a second L-shaped bracket, one edge of the second L-shaped bracket is spatially parallel to the axial direction of a second ball screw of the second ball screw-type linear slide platform, and the other edge of the second L-shaped bracket is spatially perpendicular to the axial direction of the second ball screw;
• a rectangular push plate is perpendicularly connected to the tail end of the edge, spatially perpendicular to the axial direction of the second ball screw, of the second L-shaped bracket, and the rectangular push plate has a width slightly greater than the thickness of bread slices and a length slightly smaller than the diameter of the bread receptacle, and is able to move in the axial direction of the second ball screw to deliver the top bread slice in the bread receptacle;
• a third ball screw-type linear slide platform is fixed to the left side of the plane where the axis of the first ball screw-type linear slide platform and the geometric center of the bread receptacle are located, and is located above the bread receptacle, the third ball screw-type linear slide platform is spatially perpendicular to the second ball screw-type linear slide platform and the first ball screw-type linear slide platform, and the projection of the third ball screw-type linear slide platform on the base plate is parallel to the projection of the bread receptacle on the base plate;
• a third screw nut holder of the third ball screw-type linear slide platform is connected with a third L-shaped bracket, one edge of the third L-shaped bracket is spatially perpendicular to the axial direction of a third ball screw of the third ball screw-type linear slide platform, and the other edge of the third L-shaped bracket is spatially parallel to the axial direction of the third ball screw;
• a second flat barrier plate is connected to the edge, spatially parallel to the axial direction of the third ball screw, of the third L-shaped bracket, the second flat barrier plate is spatially parallel to the axial direction of the third ball screw and is also spatially parallel to the base plate, and the second flat carrier plate is slightly larger than the bread slices and is used for storing the bread slices delivered by the rectangular push plate;
• and a photoelectric switch is arranged over the bread receptacle, is connected to the bread receptacle base through a photoelectric switch bracket, is spatially perpendicular to the base plate, and is used for detecting the position of the top bread slice in the bread receptacle;
• the bread receptacle comprises a quadrangular hollow tubular receptacle body which has a diameter slightly greater than that of the bread slices, and the bread slices are stacked and stored in the receptacle body layer by layer;
• equal-width first notches are formed in two ends, close to the top surface and the bottom surface of the receptacle body, of each of two opposite walls of the receptacle body at equal intervals, the first notches are located on inner sides of the walls and have a depth smaller than the thickness of the walls, and the four parallel first notches are perpendicular to four edges, which are perpendicular to the base plate, of the receptacle body;
• a pull plate is inserted into the pair of first notches close to the top surface of the receptacle body, and another pull plate is inserted into the pair of first notches close to the bottom surface of the receptacle body;
• the pull plates are able to move along the first notches, are perpendicular to the four edges of the receptacle body, and are used for sealing the receptacle body when the bread slices are delivered, and the pull plates are pulled out after the bread receptacle is placed into the bread receptacle base;
• two rectangular first barrier plates are respectively fixed to the walls formed with the pair of first notches close to the top surface of the receptacle body, and the two rectangular first barrier plates have a length equal to the diameter of the bread receptacle, a width slightly greater than the thickness of the bread slices, and a thickness equal to the walls, and are used for preventing the bread slices against lateral deviation during the delivery process;
• and a second notch is formed in the wall, which is parallel to and closest to the first ball screw-type linear slide platform, of the bread receptacle, the second notch is perpendicular to the base plate and is as high as the wall of the bread receptacle, slightly wider than the first L-shaped bracket, and as thick as the wall of the bread receptacle, and the first L-shaped bracket is able to move upwards or downwards in the second notch;
• the bread receptacle base comprises two parallel guide rails which are fixed to the top surface of the base plate, the distance between the two guide rails is equal to the diameter of the bread receptacle, and the guide rails are used for guiding the bread receptacle into the bread receptacle base;
• two first side plates which are perpendicular to the base plate are fixed to the outer edges of the two parallel guide rails, the first side plate in contact with the second notch of the bread receptacle is formed with a third notch which is as high and as wide as the second notch, and the third notch is as thick as the first side plates and overlaps with the second notch in position;
• the height of two first side plates is slightly greater than the total height of the walls of the bread receptacle and the first barrier plates, and higher parts of the two first side plates are each connected with a clamp strip, and the clamp strips are parallel to the first notches and are used for preventing the bread receptacle against positional deviation;
• and a second side plate is perpendicularly connected with the two first side plates and is also perpendicularly connected to the base plate, and the second side plate is as high as the walls of the bread receptacle;
• the two first side plates and the second side plate are used for fixing the position of the bread receptacle;
• a second rectangular barrier plate is connected with and coplanar with the first side plate formed with the third notch, is perpendicular to the second side plate, and is located on the outer surface of the bread receptacle base, and the second rectangular barrier plate is located over the second flat carrier plate, is slightly higher than the second flat carrier plate, and is used for preventing the bread slices from moving when the second flat carrier plate is pulled out.