An automatic stretch film processing equipment

Abstract

This utility model relates to the field of stretch film production technology and discloses an automatic stretch film processing equipment, including a cooling device, a slitting device, and a cutting box. The cooling device and slitting device are equipped with several stretching rollers. The slitting device is equipped with a cutting assembly for cutting the film. The cutting assembly includes a slitting roller, a cutting mounting rod, a guide wheel rod, and a cutting auxiliary roller within the slitting device. The slitting roller and the cutting auxiliary roller are rotatably connected to the cooling device. The cutting mounting rod and the guide wheel rod are fixedly installed on the slitting device. The slitting roller has several annular grooves, and at least two cutting blocks are movably mounted on the cutting mounting rod. This utility model, through the setting of the slitting assembly and the cutting box, enables the fully automatic recycling of the cut film scraps, eliminating the need for manual collection of the cut film throughout the process, greatly increasing production efficiency and saving costs.

Description

Technical Field

[0001] This utility model relates to the field of stretch film production technology, specifically to an automatic stretch film processing equipment. Background Technology

[0002] Edge trimming and winding in stretch film production refers to the process of precisely cutting off the uneven, damaged, or irregular edges (i.e., "waste edges") on both sides of the film width caused by uneven stretching after the original film roll is made by casting or blow molding. The cut-off waste edges are then promptly wound up and cleaned by an independent winding device. At the same time, the qualified middle part with uniform quality is neatly wound into a finished film roll of a specified width. The purpose is to ensure that the final product has a neat roll shape, uniform tension, and meets the quality standards, and to ensure the continuous and efficient operation of the production line.

[0003] After the waste edges are wound, the staff need to collect them and feed them into the melting process along with the raw materials for reuse. This requires staff to participate in the production process. The machine also needs to be stopped when the staff collects the waste edge rolls so that the staff can easily pick them up, which greatly reduces the production efficiency of the stretch film and increases labor costs. Utility Model Content

[0004] To address the aforementioned problems in the existing technology, this utility model provides an automatic processing equipment for stretch film, which has the advantage of automation that allows waste edges to be reused.

[0005] To achieve the above objectives, this utility model provides the following technical solution: it includes a cooling device, a dividing device, and a cutting box. The cooling device and the dividing device are equipped with a plurality of winding rollers, and the dividing device is equipped with a slitting assembly for slitting the film. The slitting assembly includes a slitting roller, a cutting mounting rod, a guide wheel rod, and a cutting auxiliary roller within the slitting equipment. The slitting roller and the cutting auxiliary roller are rotatably connected to the cooling equipment. The cutting mounting rod and the guide wheel rod are fixedly installed on the slitting equipment. The slitting roller has several annular grooves. At least two cutting blocks are movably mounted on the cutting mounting rod, and at least two guide wheels are movably mounted on the guide wheel rod.

[0006] Preferably, the cutting block is fixed to the cutting mounting rod by bolts, and one or two cutters are movably provided at the bottom of the cutting block, with the length between the two cutters being consistent with the length between two adjacent annular grooves on the dividing roller.

[0007] Preferably, the guide wheel is clamped onto the guide wheel rod by bolts and nuts, and a rotating wheel is rotatably mounted on one end of the guide wheel.

[0008] Preferably, the winding roller in the dividing device further includes a first auxiliary roller, a second auxiliary roller, a third auxiliary roller, a main rotating roller, and a collecting roller. A pulley is provided on one side of the rotating shaft of the main rotating roller to transmit power. One side of the collecting roller extends to the outside, and a gear is fixed on its outer part to transmit power to make it rotate.

[0009] Preferably, the winding roller in the cooling device includes a main cooling roller and a secondary cooling roller. The main cooling roller and the secondary cooling roller are hollow inside. A main rotating wheel and a main pipe connection port are fixed on both sides of the main cooling roller, and a secondary rotating wheel and a secondary pipe connection port are fixed on both sides of the secondary cooling roller. An air suction device is also provided on the upper side of the main cooling roller.

[0010] Preferably, the bottom of both the main pipe connection port and the auxiliary pipe connection port are connected to an external water pipe, and the main rotating wheel and the auxiliary rotating wheel transmit power through a belt driven by a motor.

[0011] Preferably, the suction device includes a suction box with at least two suction pipes. The other end of each suction pipe is fixed inside a suction outlet. The inside of the suction device is hollow. The bottom of the suction box is arc-shaped and has perforated holes.

[0012] Preferably, one side of the dividing device is further fixed with a traction auxiliary wheel housing and a traction main wheel housing. A second traction auxiliary wheel is slidably disposed inside the traction auxiliary wheel housing. An adjusting rod is rotatably connected to the side end face of the traction auxiliary wheel housing. The adjusting rod is threadedly connected to the side shaft of the second traction auxiliary wheel. A second traction main wheel is rotatably connected inside the traction main wheel housing. One end of the second traction main wheel extends into the dividing device to be powered by a motor.

[0013] Preferably, the cutting box is provided with a cutting traction shell, and a first traction auxiliary wheel and a first traction main wheel are rotatably connected inside the cutting traction shell. The rear side of the first traction main wheel is mounted on a motor, and the front side of the first traction auxiliary wheel is movably connected to the cutting traction shell by a spring. The cutting box is hollow inside, and the bottom of the cutting traction shell is provided with a through hole communicating with the cutting box. A cutter is provided inside the cutting box at the through hole.

[0014] Compared with the prior art, the present invention provides an automatic processing equipment for stretch film, which has the following advantages: 1. This automatic stretch film processing equipment, through the setting of the slitting component and the cutting box, enables the fully automatic recycling of the cut film edge material. The entire process does not require manual collection of the slit film, which greatly increases production efficiency and saves costs.

[0015] 2. This automatic stretch film processing equipment, through the setting of main cooling roller, auxiliary cooling roller and air extraction box, the water flowing in the water pipe will lower the temperature of the film, thereby cooling the film on the main cooling roller and auxiliary cooling roller, so that the film will not be easily stretched. The air extraction box can quickly extract the water vapor, preventing condensation and avoiding water droplets from affecting the film formation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the film winding structure of this utility model; Figure 3 This is a schematic diagram of the segmentation device of this utility model; Figure 4 This is a schematic diagram of the segmentation device of this utility model; Figure 5 This is a schematic diagram of the segmentation device of this utility model; Figure 6 This is a schematic diagram of the waste edge cutting process of this utility model.

[0017] In the diagram: 10. Cooling equipment; 11. Main cooling roller; 111. Main rotating wheel; 112. Main pipe connection port; 12. Auxiliary cooling roller; 121. Auxiliary rotating wheel; 122. Auxiliary pipe connection port; 13. Extraction box; 131. Extraction pipe; 132. Extraction outlet; 20. Segmentation equipment; 21. First auxiliary roller; 22. Second auxiliary roller; 23. Third auxiliary roller; 24. Main rotating roller; 25. Collection roller; 26. Segmentation roller; 27. Cutting mounting rod; 271. Cutting block; 28. Guide wheel rod; 281. Guide wheel; 29. ​​Cutting auxiliary roller; 30. Cutting box; 301. First traction auxiliary wheel; 302. First traction main wheel; 31. Cutting traction housing; 40. Traction auxiliary wheel housing; 402. Second traction auxiliary wheel; 403. Adjusting rod; 41. Traction main wheel housing; 411. Second traction main wheel; 50. Film; 51. Film edge material; 52. Stretch film. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] like Figure 1-6As shown, the system includes a cooling device 10, a dividing device 20, and a cutting box 30. The cooling device 10 and the dividing device 20 are equipped with several winding rollers. The dividing device 20 contains a slitting assembly for cutting the film. During production, plastic granules are first melted, then extruded through an extrusion device. The melted plastic is then continuously pressed thinner and wider through a calendering device to gradually form a film 50 of uniform thickness. The calendered film is at a high temperature and easily stretched, requiring the cooling device 10 to cool and shape it. After shaping, the film is relatively wide and needs to be cut into at least three wrappers 52 of uniform width in the dividing device 20. The edge of each wrapper is cut off to form film edge material 51. The cut film edge material 51 is bundled and conveyed to the cutting box 30 for cutting via a traction device. The cut film strips are then transported to the production line inlet and fed back in along with the plastic granules for fully automated, cyclical production. The entire process eliminates the need for manual collection of the cut film, significantly increasing production efficiency and saving costs.

[0020] The slitting assembly includes a slitting roller 26, a cutting mounting rod 27, a guide wheel rod 28, and a cutting auxiliary roller 29 within the slitting device 20. The slitting roller 26 and the cutting auxiliary roller 29 are rotatably connected to the cooling device 10. The cutting mounting rod 27 and the guide wheel rod 28 are fixedly mounted on the slitting device 20. The slitting roller 26 has several annular grooves, and the film 50 is slid on the slitting roller 26. At least two cutting blocks 271 are movably mounted on the cutting mounting rod 27, and at least two guide wheels 281 are movably mounted on the guide wheel rod 28. The guide wheels 281 are clamped onto the guide wheel rod 28 by bolts and nuts. Tightening the nuts can tighten the guide wheel rod 28, increasing the friction, thereby fixing it on the guide wheel rod 28. A rotating wheel is rotatably mounted on one end of the guide wheel 281. The cut film edge material 51 is wrapped around the guide wheel 281 and then conveyed in one direction on the rotating wheel.

[0021] The cutting block 271 is fixed to the cutting mounting rod 27 by bolts. The threaded contact with the cutting mounting rod 27 allows for frictional limiting of the cutting block 271. One or two cutters are movably provided at the bottom of the cutting block 271. The length between the two cutters is consistent with the two adjacent annular grooves on the dividing roller 26. When the cutting block 271 is at the edge, one or one of the two cutters at the bottom of the cutting block 271 is in a retracted state. When the cutting block 271 is in the middle, both cutters participate in the cutting, so that when the stretch film 52 is generated, its two sides are cut by separate cutters. If two adjacent stretch films 52 are cut by one cutter, if the cutter is damaged or moves, it will cause both stretch films 52 to be defective. If two cutters are used, even if one cutter is damaged, only one stretch film 52 will be defective, and the other stretch films 52 will not be affected.

[0022] The winding rollers in the dividing device 20 also include a first auxiliary roller 21, a second auxiliary roller 22, a third auxiliary roller 23, a main rotating roller 24, and a collecting roller 25. A pulley is provided on one side of the rotating shaft of the main rotating roller 24, and power is transmitted through the pulley. One side of the collecting roller 25 extends to the outside, and a gear is fixed on its outer part. Power is transmitted through the gear to make it rotate. The winding film 52 is all wound on the collecting roller 25 and collected together. Then the collecting roller 25 is disassembled and the wound winding film 52 is removed.

[0023] The winding rollers in the cooling device 10 include a main cooling roller 11 and an auxiliary cooling roller 12. The main cooling roller 11 and the auxiliary cooling roller 12 are hollow inside. The main cooling roller 11 has a main rotating wheel 111 and a main pipe connection port 112 fixed on both sides. The auxiliary cooling roller 12 has an auxiliary rotating wheel 121 and an auxiliary pipe connection port 122 fixed on both sides. An air suction device is also provided on the upper side of the main cooling roller 11. The bottom of the main pipe connection port 112 and the auxiliary pipe connection port 122 are connected to the outside water pipe. The main rotating wheel 111 and the auxiliary rotating wheel 121 are driven by a motor to transmit power through a belt. The water flowing in the water pipe will lower the temperature of the film 50, thereby cooling the film 50 on the main cooling roller 11 and the auxiliary cooling roller 12, so that the film 50 will not be easily stretched.

[0024] The suction device includes a suction box 13, which is fixedly installed inside the cooling equipment 10, located directly above the main cooling roller 11. The suction box 13 is provided with at least two suction pipes 131, the other end of which is fixed inside the suction outlet 132. The inside of the suction device is hollow, and the bottom of the suction box 13 is arc-shaped with perforated holes. Because the temperature of the film after calendering is high, after being cooled by the main cooling roller 11, a temperature difference is formed, and water vapor rises. Water droplets will condense in the space above it and then fall back onto the film. When the water droplets are on the film, the film is heated unevenly. During the cooling process, the film contracts and expands, which can cause uneven thickness in some areas. The suction box 13 can quickly extract the water vapor, preventing condensation and thus avoiding the water droplets from affecting the film formation.

[0025] One side of the dividing device 20 is also fixed with a traction auxiliary wheel housing 40 and a traction main wheel housing 41. A second traction auxiliary wheel 402 is slidably arranged inside the traction auxiliary wheel housing 40. An adjusting rod 403 is rotatably connected to the side end face of the traction auxiliary wheel housing 40. The adjusting rod 403 is threadedly connected to the side shaft of the second traction auxiliary wheel 402. A second traction main wheel 411 is rotatably connected inside the traction main wheel housing 41. One end of the second traction main wheel 411 extends into the dividing device 20 to be connected to the motor. The film edge material 51 is clamped by the second traction main wheel 411 and the second traction auxiliary wheel 402, and the film edge material 51 can be subjected to the first traction action.

[0026] The cutting box 30 is equipped with a cutting traction shell 31. A first traction auxiliary wheel 301 and a first traction main wheel 302 are rotatably connected inside the cutting traction shell 31. The rear side of the first traction main wheel 302 is mounted on a motor, and the front side of the first traction auxiliary wheel 301 is movably connected to the cutting traction shell 31 by a spring. The cutting box 30 is hollow inside. The bottom of the cutting traction shell 31 is provided with a through hole communicating with the cutting box 30. A cutter is provided inside the cutting box 30 at the through hole. The film edge material 51 is clamped by the first traction main wheel 302 and the first traction auxiliary wheel 301, and a second traction action is performed on it. Then it enters the cutting box 30. The cutter cuts the bundled film edge material 51, so that the entire recycling process of the film edge material 51 does not require manual intervention and is fully automatic.

[0027] Working principle: such as Figure 2As shown, the winding method of the winding rollers during film production involves the film being calendered and then wound onto the main cooling roller 11 and the auxiliary cooling roller 12. Water is introduced into both the main cooling roller 11 and the auxiliary cooling roller 12 to cool the calendered film. The water vapor generated by the heat change on the main cooling roller 11 is then quickly extracted by the extraction box 13. The film 50 is wound above the cooling device 10 onto the cutting device 20, and then onto the first auxiliary roller 21 and the second auxiliary roller 22. It is then wound from the second auxiliary roller 22 onto the cutting roller 26. On the cutting roller 26, the film 50 is cut by the cutting block 271, forming multiple film edge pieces 51 and winding film 52. The film edge pieces 51 are wound from the cutting roller 26 onto the cutting auxiliary roller 29, and then onto the rotating wheel on the guide wheel 281. Each film edge piece 51 is transported in the same direction by the rotating wheel until it is wound downwards onto the last rotating wheel. Between the second traction main wheel 411 and the second traction auxiliary wheel 402, the second traction auxiliary wheel 402 will squeeze the film edge material 51, so that the second traction main wheel 411 can pull the film edge material 51. Then, the film edge material 51 enters between the first traction auxiliary wheel 301 and the first traction main wheel 302 through multiple steering guide wheels. The spring on the first traction auxiliary wheel 301 will squeeze the film edge material 51 against the first traction main wheel 302. The rotation of the first traction main wheel 302 will pull the film edge material 51 again. The pulled film edge material 51 enters the cutting box 30 and is cut by the cutter. The cut film edge material 51 will be drawn into the feed port of the production line by the negative pressure fan for reuse. At the same time, the wrapping film 52 will be wound from the dividing roller 26 onto the third auxiliary roller 23 and the main rotating roller 24, and then wound onto the collecting roller 25 to form a film roll.

[0028] In summary, this automatic stretch film processing equipment, through the setting of the slitting component and the cutting box 30, enables the fully automatic recycling of the cut film edge material 51, eliminating the need for manual collection of the slit film throughout the process, greatly increasing production efficiency and saving costs. The main cooling roller 11, auxiliary cooling roller 12, and vacuum box 13 ensure that the water flowing in the water pipes keeps the temperature of the film 50 low, thus cooling the film 50 on the main cooling roller 11 and auxiliary cooling roller 12, preventing the film 50 from being easily stretched. The vacuum box 13 quickly extracts the water vapor, preventing condensation and avoiding water droplets affecting film formation.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic winding film processing apparatus comprising a cooling apparatus (10), a dividing apparatus (20), and a cutting box (30), characterized by: The cooling device (10) and the dividing device (20) are equipped with a plurality of winding rollers, and the dividing device (20) is equipped with a slitting assembly for slitting the film; The slitting assembly includes a slitting roller (26), a cutting mounting rod (27), a guide wheel rod (28), and a cutting auxiliary roller (29) within the slitting device (20). The slitting roller (26) and the cutting auxiliary roller (29) are rotatably connected to the cooling device (10). The cutting mounting rod (27) and the guide wheel rod (28) are fixedly mounted on the slitting device (20). The slitting roller (26) has several annular grooves. At least two cutting blocks (271) are movably mounted on the cutting mounting rod (27), and at least two guide wheels (281) are movably mounted on the guide wheel rod (28).

2. The automatic wrapping film processing apparatus according to claim 1, characterized in that: The cutting block (271) is fixed to the cutting mounting rod (27) by bolts. One or two cutters are movably provided at the bottom of the cutting block (271), and the length between the two cutters is consistent with the length between two adjacent annular grooves on the dividing roller (26).

3. The automatic wrapping film processing apparatus according to claim 1, characterized in that: The guide wheel (281) is clamped to the guide wheel rod (28) by bolts and nuts, and a rotating wheel is rotatably installed at one end of the guide wheel (281).

4. The apparatus of claim 1, wherein: The winding roller in the dividing device (20) also includes a first auxiliary roller (21), a second auxiliary roller (22), a third auxiliary roller (23), a main rotating roller (24), and a collecting roller (25). A pulley is provided on one side of the rotating shaft of the main rotating roller (24) to transmit power through the pulley. One side of the collecting roller (25) extends to the outside, and a gear is fixed on its outside part to transmit power to make it rotate.

5. The apparatus according to claim 1, wherein: The winding rollers in the cooling device (10) include a main cooling roller (11) and a secondary cooling roller (12). The interiors of the main cooling roller (11) and the secondary cooling roller (12) are hollow. The main cooling roller (11) has a main rotating wheel (111) and a main pipe connection port (112) fixed on both sides. The secondary cooling roller (12) has a secondary rotating wheel (121) and a secondary pipe connection port (122) fixed on both sides. An air suction device is also provided on the upper side of the main cooling roller (11).

6. An automatic wrapping film processing apparatus according to claim 5, characterized in that: The bottom of the main pipe connection port (112) and the auxiliary pipe connection port (122) are connected to the external water pipe. The main rotating wheel (111) and the auxiliary rotating wheel (121) transmit power through the belt driven by the motor.

7. The apparatus of claim 5, wherein: The suction device includes a suction box (13), which is provided with at least two suction pipes (131). The other end of each suction pipe (131) is fixed inside the suction outlet (132). The inside of the suction device is hollow. The bottom of the suction box (13) is arc-shaped and has hollow holes.

8. The apparatus of claim 1, wherein: The dividing device (20) is also fixed with a traction auxiliary wheel housing (40) and a traction main wheel housing (41) on one side. A second traction auxiliary wheel (402) is slidably disposed inside the traction auxiliary wheel housing (40). An adjusting rod (403) is rotatably connected to the side end face of the traction auxiliary wheel housing (40). The adjusting rod (403) is threadedly connected to the side shaft of the second traction auxiliary wheel (402). A second traction main wheel (411) is rotatably connected inside the traction main wheel housing (41). One end of the second traction main wheel (411) extends into the dividing device (20) to be powered by the motor.

9. The apparatus of claim 1, wherein: The cutting box (30) is provided with a cutting traction shell (31). The cutting traction shell (31) is rotatably connected with a first traction auxiliary wheel (301) and a first traction main wheel (302). The rear side of the first traction main wheel (302) is mounted on a motor. The front side of the first traction auxiliary wheel (301) is movably connected to the cutting traction shell (31) by a spring. The cutting box (30) is hollow inside. The bottom of the cutting traction shell (31) is provided with a through hole communicating with the cutting box (30). A cutter is provided inside the cutting box (30) at the through hole.

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