Improved film winding machine for packaging bulk goods

Abstract

The invention belongs to the technical field of film winding machines, and discloses an improved film winding machine for packaging bulk goods, which comprises a base, a carrying disc, a support column, a ball screw, a fixed arm and an air cylinder, wherein the outer surface of the ball screw is sleeved with a sliding block in a threaded manner, and a movable groove is formed in the front surface of the sliding block; and an upper connecting ring and a lower connecting ring are fixedly mounted on the upper wall and the lower wall of the movable groove correspondingly. The stretching part of the winding film starts to bend and deform and drives the winding film to rotate, limiting protection is completed, the stretching part of the winding film is prevented from being excessively extruded and deformed in the upward moving process of the sliding block, and therefore the effect of protecting the winding film is achieved; meanwhile, when the winding film recovers to horizontally stretch out, a discharging frame drives an adjusting column to return, so that the third spring moves upwards and pushes the lower limiting plate and the adjusting column to move upwards, the clamping block is clamped into the clamping groove again, and automatic return operation of the adjusting column is completed.

Description

technical field [0001] The invention belongs to the technical field of stretch film machines, in particular to an improved stretch film machine used for packaging bulk articles. Background technique [0002] Stretch film machine is sometimes used for packing bulk items. Bulk items are usually loaded in wooden boxes. On the premise of effectively ensuring safety, stretch film is also required for wrapping and packaging. Stretch film machine mainly uses the tension of stretch film to wind items. It becomes a whole. With the development of scientific and technological production, the functions of stretch film machines are becoming more and more abundant. [0003] When the existing improved stretch film machine for packaging bulk items is wrapped and packaged, the items are mainly placed on the loading tray and fixed, then the stretching film is wound on it, and the loading tray is driven by the power device to rotate, so that The article drives the stretch film to be wound, an...

AI Technical Summary

Problems solved by technology

[0003] When the existing improved stretch film machine for packaging bulk items is wrapped and packaged, the items are mainly placed on the loading tray and fixed, then the stretching film is wound on it, and the loading tray is driven by the power device to rotate, so that The article drives the stretch film to be wound, and then the mechanism for installing the stretch film is driven up and down by the power device to adapt to the taller article, but the stretch film is generally stretched out during the process of rising on one side. The small-angle extrusion of the protruding stretching film makes the deformed part of the stretching film easy to pull, resulting in a decrease in strength, and may even cause the winding to break, resulting in packaging failure

[0004] The existing improved stretch film machine for packaging of bulk items usually uses a combination of cylinder and movable platen when packing. The platen is a rotatable structure. One of them rotates together to complete the extrusion and fixation, but sometimes the top of the object is not flat and may be inclined. At this time, the pressure plate cannot be rotated and adapted at a limited angle, resulting in a smaller contact area between the two , and the pressure becomes larger, not only cannot fix the item well, but may damage the item

[0005] The existing improved stretch film machine used for bulk packaging needs to cut the stretch film after packing, but there are many inconveniences in the cutting process. When the motor drives the loading plate to rotate at high speed, the stretch film is cut off The degree of stretching will be very high. In the prior art, it is often interrupted by manual pulling, but because the tension of the cut part of the stretch film is extremely strong, manual cutting will inevitably cause the incision to be uneven. Synchronous cutting, cutting efficiency and effect are extremely low

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