[0019] In the following, with reference to the drawings, through the description of the embodiments, the specific embodiments of the present invention such as the shape and structure of the various components involved, the mutual position and connection relationship between the various parts, the function and working principle of each part, and the manufacturing process And the operation and use method, etc., are described in further detail to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concept and technical scheme of the present invention.
[0020] figure 1 This is a schematic diagram of the retractable belt conveyor in the present invention. The retractable belt conveyor shown in the figure includes a belt 1 and a frame 2 for supporting the belt conveyor. One end of the frame 2 is provided with a control belt 1 Telescopic telescopic mechanism 3, one end of the belt 1 away from the telescopic mechanism is provided with a sliding connecting block 4 for assisting belt sliding, and the frame 2 is provided with a sliding rail 5 at the bottom of the belt for sliding, and the belt 1 and the sliding rail 5 pass between The sliding connecting block 4 is connected, and the other end of the belt 1 is built into the telescopic mechanism 3 to control the other end of the belt to slide to change the conveying length through the telescopic mechanism 3. A control sliding connecting block is provided between the telescopic mechanism 3 and the sliding connecting block 4 The cassette 6, the bottom of the sliding connecting block 4 and the cassette are clamped.
[0021] figure 2 This is the front view of the retractable belt conveyor in the present invention, image 3 It is a side view of the retractable belt conveyor in the present invention, such as figure 2 with image 3 The telescopic mechanism in the belt conveyor shown includes a movable pulley group 8 connected to the belt, a stepping motor 9 that controls the movable pulley group 8 to move along the normal direction of the belt 1, and a fixed pulley group 7 that fixes the belt in the normal direction, and a movable pulley group. 8 and the fixed pulley group 7 are equipped with multiple movable pulleys and multiple fixed pulleys with the same number and symmetrical positions. Each fixed pulley and the movable pulley are connected by a belt, and the movable pulley group 8 is slidably connected to both sides of the telescopic mechanism through a sliding plate Connected with both sides slidingly, the stepping motor 9 controls the belt to expand and contract in the axial direction by controlling the movement of the sliding plate. The output end of the stepping motor 9 is provided with a transmission shaft for controlling the cassette transmission, and the stepping motor 9 is controlled by controlling the rotation of the transmission shaft The sliding connecting block 4 moves, and the frame is further provided with an auxiliary wheel 11 that assists the cassette transmission at the end facing away from the telescopic mechanism. The auxiliary wheel 11 outputs the cassette transmission torque through a toothing connection, away from the auxiliary The other end of the wheel is connected with the output end of the stepping motor to drive the cassette drive through the stepping motor, so that the sliding connecting block 4 moves back and forth to stretch the belt.
[0022] The above telescopic mechanism is also provided with a servo motor that controls the belt drive. The output end of the servo motor is connected to the main shaft that controls the belt drive, and the other end of the belt is fixedly connected to the sliding connection block; by controlling the servo motor and stepping The speed difference between the motors is used to complete the linkage of the belt and the cassette, so that the belt conveyor not only has the transmission function, but also has the palletizing function.
[0023] In this case, the belt half surrounds and passes through each fixed pulley and movable pulley in the corresponding vertical row in the movable pulley group and the fixed pulley group in turn.
[0024] Figure 4 It is a top view of the retractable belt conveyor in the present invention, Figure 4 The position 12 of the sliding connection block in this refers to the limit position that the sliding connection block can move to at this end. The belt conveyor does not need to be moved to the limit position during use, but only needs to reach its transmission and palletizing purpose.
[0025] By adopting this technical solution, by adding a telescopic mechanism in the belt conveyor, the belt conveyor can change the length of the transmission to stack the next conveyor belt to process materials synchronously. The telescopic mechanism adopts a stepping motor and a cassette control. It can be in line with the transmission rhythm of the next conveyor belt, more accurately match the production beat, and through the linkage of the belt conveyor and the telescopic mechanism, the conveyor can be more accurately positioned, and the palletizing accuracy of the process can be improved, so it is more applicable In the packaging process of frozen food, it can be transported to the freezer at even intervals at the same time, so that the freezing effect of the material is unified, and the food is frozen more uniformly, which is convenient for packaging and storage.
[0026] The present invention has been exemplarily described above in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited by the above methods, as long as the method concept and technical solution of the present invention are used for various insubstantial improvements or without improvements. Application of the concept and technical scheme of the present invention to other occasions directly falls within the protection scope of the present invention.
