Feeding device of protective film production equipment

Abstract

The invention relates to the technical field of protective film production, in particular to a protective film production equipment feeding device which comprises a feeding box. The feeding mechanism comprises a first rod rotationally connected to the inner wall of the feeding box, the side wall of the first rod is fixedly connected with a spiral conveying blade, the outer side wall of the spiral conveying blade is attached to the inner side wall of the feeding box, the side wall of the feeding box is fixedly connected with a motor, and the movable end of the motor is fixedly connected with one end of the first rod; the loosening mechanism comprises a plurality of two-way reciprocating lead screws, the two-way reciprocating lead screws are rotationally connected with the side walls, close to each other, of the spiral conveying blade, and the two-way reciprocating lead screws are arranged in the radial direction of the first rod. A loosening mechanism is arranged, in the rotating process of spiral conveying blades, a threaded barrel drives a second rod to rotate through a first bevel gear and a second bevel gear, a plurality of loosening rods are driven to rotate, and hygroscopic and caked plastic particles are loosened.

Description

Technical Field

[0001] The invention relates to the technical field of protective film production, and in particular to a feeding device for protective film production equipment. Background Art

[0002] The protective film is a film-like material that has a protective function on the surface of other materials. When producing the protective film, an extrusion device is required to melt and extrude the plastic particles, and the plastic particles need to be fed into the extrusion device.

[0003] At present, the feeding of plastic particles is generally done by directly setting a material guide barrel on the extrusion equipment, and then the plastic particles enter the extrusion equipment through the material guide barrel. However, in actual use, since the plastic particles are likely to absorb moisture when stored in the outside, the plastic particles absorb moisture and agglomerate. After the plastic particles enter the extrusion equipment, the agglomerated plastic particles cannot be heated evenly in the extrusion equipment, thereby affecting the quality of subsequent protective film extrusion. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to propose a feeding device for protective film production equipment.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A feeding device for protective film production equipment, comprising: Feed box; A feeding mechanism, the feeding mechanism comprising a first rod rotatably connected to the inner wall of a feeding box, a spiral conveying blade fixedly connected to the side wall of the first rod, an outer side wall of the spiral conveying blade abuts against the inner wall of the feeding box, a motor fixedly connected to the side wall of the feeding box, and a movable end of the motor fixedly connected to one end of the first rod; A loosening mechanism comprises a plurality of bidirectional reciprocating screws, the bidirectional reciprocating screws are rotatably connected to the side walls of the spiral conveying blades that are close to each other, the plurality of bidirectional reciprocating screws are arranged along the radial direction of the first rod, two adjacent bidirectional reciprocating screws are fixedly connected, the side walls of the bidirectional reciprocating screws are threadedly connected to two slides, the upper and lower ends of the slides are rotatably connected to the second rod, and the side walls of the second rod are fixedly connected to a plurality of loosening rods.

[0006] Preferably, an annular groove is formed on the inner wall of the feeding box away from the motor, a rotatable circular plate is sealingly and slidably connected to the inner wall of the annular groove, and the side wall of the first rod is fixedly connected to the side wall of the circular plate.

[0007] Preferably, a cavity is formed on the side wall of the slide plate close to the second rod, a threaded cylinder is rotatably connected to the inner wall of the cavity, a first bevel gear is fixedly connected to the side wall of the threaded cylinder, the side wall of the second rod passes through the side wall of the slide plate and is located in the cavity, the side wall of the second rod located in the cavity is fixedly connected to the second bevel gear, and the first bevel gear and the second bevel gear are meshed.

[0008] Preferably, two rifle rods are fixedly connected between the side walls close to each other on the spiral conveying blade, the two rifle rods are symmetrically arranged along the axis of the bidirectional reciprocating screw, and the side walls of the rifle rods are threadedly connected to the inner side walls of the corresponding threaded barrels.

[0009] Preferably, a first elastic membrane is sealed and fixedly connected between two adjacent slides, and a side wall of the slide away from the first elastic membrane is sealed and fixedly connected to a side wall of the spiral conveying blade via a second elastic membrane.

[0010] Preferably, a third rod is fixedly connected to one end of the bidirectional reciprocating screw away from the motor, and the side wall of the third rod is rotatably connected to the side wall of the circular plate. A gear ring is fixedly connected to the inner wall of the feeding box away from the motor, and a first gear is fixedly connected to the side wall of the bidirectional reciprocating screw away from the third rod, and the gear ring and the first gear are meshed.

[0011] Preferably, the inner bottom of the feeding box near the circular plate is fixedly connected with a feeding pipe, the upper end of the feeding box near the motor is fixedly connected with a storage box through a bracket, and the inner bottom of the storage box is connected with the inner top of the feeding box through a feeding pipe.

[0012] Preferably, a debris removal mechanism is provided in the material storage box, and the debris removal mechanism includes an L-shaped plate fixedly connected to the inner wall of the material storage box, a conical groove is provided below the side wall of the L-shaped plate, a fourth rod is rotatably connected to the top of the conical groove, a conical plate is fixedly connected to the side wall of the fourth rod, the upper surface of the conical plate is fitted with the top of the conical groove, a plurality of through holes are provided on the side wall of the conical plate, a collecting bucket is fixedly connected to the inner wall of the conical groove below the conical plate, the lower end of the conical plate is fitted with the upper end of the collecting bucket, and a dust suction pipe is fixedly connected to the bottom of the collecting bucket.

[0013] Preferably, the inner wall of the material storage box and the inner wall of the collecting barrel are both provided with rectangular grooves, and the inner walls of the two rectangular grooves are slidably connected to a horizontal plate, the upper end of the horizontal plate is fixedly connected to an arc plate, and the upper end of the arc plate is fixedly connected to a dredging rod corresponding to a plurality of through holes, and the upper surface of the arc plate is opposite to the upper surface of the L-shaped plate, and the side wall of the third rod away from the bidirectional reciprocating screw is rotatably connected to the lower end of the horizontal plate through a rotating rod.

[0014] Preferably, a driving mechanism is provided in the collecting barrel, and the driving mechanism includes a one-way bearing. The inner wall of the collecting barrel is rotatably connected to the third bevel gear through the fifth rod, the lower end of the fourth rod is fixedly connected to the fourth bevel gear meshing with the third bevel gear, the side wall of the fifth rod is fixedly connected to the side wall of the inner ring of the one-way bearing, the side wall of the outer ring of the one-way bearing is fixedly connected to the second gear, and the lower end of the cross plate is fixedly connected to a toothed plate, which meshes with the second gear during the up and down movement.

[0015] Compared with the prior art, the present invention has the following advantages: 1. A loosening mechanism is provided. During the rotation of the spiral conveying blade, the threaded cylinder drives the second rod to rotate through the first bevel gear and the second bevel gear, and drives multiple loosening rods to rotate, so as to loosen the hygroscopic and agglomerated plastic particles. This avoids the problem in the prior art that after the hygroscopic and agglomerated plastic particles enter the extrusion equipment, the agglomerated plastic particles cannot be heated evenly in the extrusion equipment, thereby affecting the quality of subsequent protective film extrusion.

[0016] 2. The multiple loosening rods located on the two slides will intermittently approach and move away during the rotation process, and the multiple loosening rods located on the two slides are staggered. At this time, the multiple loosening rods can loosen the plastic particles in the feeding box over a larger range. At the same time, this staggered design can loosen plastic particles of different agglomerate sizes and prevent plastic particles with smaller agglomerates from flowing out of the gaps between the loosening rods.

[0017] 3. The impurity removal mechanism can absorb the dust and impurities that may exist in the plastic particles through multiple through holes, ensuring that the plastic particles enter the extrusion equipment cleanly and avoiding the presence of impurities in the plastic particles that affect the production quality of the protective film.

[0018] 4. A driving mechanism is provided to intermittently exchange the impurity removal part and the dredging part of the conical plate, thereby realizing automatic dredging of the impurity removal part on the conical plate and increasing its continuous impurity removal effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of a feeding device for protective film production equipment proposed by the present invention; Figure 2 for Figure 1 A vertical cross-sectional structural schematic diagram of ; Figure 3 for Figure 2 A schematic diagram of the structure enlargement at the center A; Figure 4 for Figure 3 A schematic diagram of the structure enlarged at B in the middle; Figure 5 for Figure 2 A schematic diagram of the structure enlarged at C in the middle; Figure 6 for Figure 5 A schematic diagram of the structure at D in the middle is enlarged; Figure 7 for Figure 1 Structural diagram of the impurity removal mechanism; Figure 8 for Figure 7 Schematic diagram of the structure viewed from above; Fig. 9 for Figure 1 Schematic diagram of the structure of the feeding mechanism and the loosening mechanism.

[0020] In the figure: 1, feeding box; 2, first rod; 3, spiral conveying blade; 4, motor; 5, circular plate; 6, bidirectional reciprocating screw; 7, slide plate; 8, rifle rod; 9, threaded barrel; 10, cavity; 11, second rod; 12, loose rod; 13, first bevel gear; 14, second bevel gear; 15, first elastic membrane; 16, second elastic membrane; 17, third rod; 18, gear ring; 19, first gear; 20, feeding pipe; 21. Storage box; 22. Feed pipe; 23. L-shaped plate; 24. Conical groove; 25. Collecting bucket; 26. Conical plate; 27. Through hole; 28. Dust suction pipe; 29. ​​Rectangular groove; 30. Horizontal plate; 31. Arc plate; 32. Clearing rod; 33. Rotating rod; 34. Fourth rod; 35. Fifth rod; 36. Third bevel gear; 37. Fourth bevel gear; 38. One-way bearing; 39. Second gear; 40. Tooth plate. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Reference Figure 1 - Fig. 9 , a feeding device for protective film production equipment includes a feeding box 1.

[0023] The feeding mechanism includes a first rod 2 rotatably connected to the inner wall of the feeding box 1, a spiral conveying blade 3 is fixedly connected to the side wall of the first rod 2, the outer wall of the spiral conveying blade 3 is in contact with the inner wall of the feeding box 1, and a motor 4 is fixedly connected to the side wall of the feeding box 1. The movable end of the motor 4 is fixedly connected to one end of the first rod 2, so that the plastic particles required in the production process of the protective film can be conveyed to the protective film production extrusion equipment.

[0024] An annular groove is formed on the inner wall of the feeding box 1 away from the motor 4 , and a rotatable circular plate 5 is sealingly and slidably connected to the inner wall of the annular groove, and the side wall of the first rod 2 is fixedly connected to the side wall of the circular plate 5 .

[0025] The inner bottom of the feeding box 1 near the circular plate 5 is fixedly connected with a feeding pipe 20, and the upper end of the feeding box 1 near the motor 4 is fixedly connected with a storage box 21 through a bracket, and the inner bottom of the storage box 21 is connected to the top of the feeding box 1 through a feeding pipe 22 (such as Figure 2 as shown).

[0026] The loosening mechanism includes a plurality of bidirectional reciprocating screws 6, which are rotatably connected to the side walls of the spiral conveying blade 3 that are close to each other (such as Figure 3 As shown), multiple bidirectional reciprocating screws 6 are arranged along the radial direction of the first rod 2, and two adjacent bidirectional reciprocating screws 6 are fixedly connected. Two slides 7 are threadedly connected to the side walls of the bidirectional reciprocating screws 6. The upper and lower ends of the slides 7 are rotatably connected to the second rod 11, and the side walls of the second rod 11 are fixedly connected to multiple loose rods 12.

[0027] A cavity 10 is opened on the side wall of the slide plate 7 near the second rod 11, and a threaded cylinder 9 is rotatably connected to the inner wall of the cavity 10. A first bevel gear 13 is fixedly connected to the side wall of the threaded cylinder 9. The side wall of the second rod 11 passes through the side wall of the slide plate 7 and is located in the cavity 10. The side wall of the second rod 11 located in the cavity 10 is fixedly connected to the second bevel gear 14, and the first bevel gear 13 and the second bevel gear 14 are meshed.

[0028] Two rifle rods 8 are fixedly connected between the side walls close to each other on the spiral conveying blade 3. The two rifle rods 8 are symmetrically arranged along the axis of the bidirectional reciprocating screw 6. The side walls of the rifle rods 8 are threadedly connected to the inner side walls of the corresponding threaded cylinders 9 (such as Figure 4 as shown).

[0029] One end of the bidirectional reciprocating screw 6 away from the motor 4 is fixedly connected to the third rod 17, and the side wall of the third rod 17 is rotatably connected to the side wall of the circular plate 5. The inner wall of the feeding box 1 away from the motor 4 is fixedly connected to the gear ring 18, and the side wall of the third rod 17 away from the bidirectional reciprocating screw 6 is fixedly connected to the first gear 19, and the gear ring 18 and the first gear 19 are meshed.

[0030] When the motor 4 drives the first rod 2 to rotate, the circular plate 5 and the spiral conveying blade 3 are driven to rotate. At this time, the third rod 17 will rotate with the circular plate 5, and then under the action of the gear ring 18 and the first gear 19, the third rod 17 will rotate by itself, driving multiple bidirectional reciprocating screws 6 to rotate, and under the guiding action of the two rifle rods 8 and the four threaded barrels 9, the two slides 7 will intermittently approach and move away from each other, and the movement of the slide 7 drives the threaded barrel 9 to move. At this time, the threaded barrel 9 rotates under the action of the rifle rod 8, and then the threaded barrel 9 drives the second rod 11 to rotate through the first bevel gear 13 and the second bevel gear 14, and drives multiple loose rods 12 to rotate, loosening the hygroscopic and agglomerated plastic particles, avoiding the hygroscopic and agglomerated plastic particles in the prior art from entering the extrusion equipment, and the agglomerated plastic particles cannot be evenly heated in the extrusion equipment, affecting the quality of subsequent protective film extrusion.

[0031] Since the multiple loosening rods 12 located on the two slides 7 will intermittently approach and move away during the rotation process, and the multiple loosening rods 12 located on the two slides 7 are staggered, the multiple loosening rods 12 can loosen the plastic particles in the feeding box 1 over a larger range. At the same time, this staggered design can loosen plastic particles of different agglomerate sizes and prevent smaller agglomerated plastic particles from flowing out of the gaps between the loosening rods 12.

[0032] A first elastic membrane 15 is sealed and fixedly connected between two adjacent slide plates 7 , and a side wall of the slide plate 7 away from the first elastic membrane 15 is sealed and fixedly connected to a side wall of the spiral conveying blade 3 via a second elastic membrane 16 .

[0033] like Figure 3 and Figure 4 As shown, the bidirectional reciprocating screw 6 and the two rifle rods 8 are both located in the first elastic membrane 15 and the second elastic membrane 16 , so as to protect the bidirectional reciprocating screw 6 and the two rifle rods 8 .

[0034] The storage box 21 is provided with a cleaning mechanism, which includes an L-shaped plate 23 fixedly connected to the inner wall of the storage box 21, and a conical groove 24 (such as Figure 7 As shown in FIG. 1 ), the top of the conical groove 24 is rotatably connected to a fourth rod 34, and the side wall of the fourth rod 34 is fixedly connected to a conical plate 26 (as shown in FIG. 1 ). Figure 7 As shown in FIG. 1 ), the upper surface of the conical plate 26 is fitted with the top of the conical groove 24, and a plurality of through holes 27 are provided on the side wall of the conical plate 26. The inner side wall of the conical groove 24 below the conical plate 26 is fixedly connected with a collecting barrel 25, and the lower end of the conical plate 26 is fitted with the upper end of the collecting barrel 25 (as shown in FIG. Figure 5 As shown, a dust suction pipe 28 is fixedly connected to the bottom of the collection bucket 25 (as shown in FIG. Figure 5 as shown).

[0035] The L-shaped plate 23 divides the conical plate 26 into two parts. During use, plastic particles are put in between the inner wall of the storage box 21 and the side wall of the L-shaped plate 23. At this time, the multiple through holes 27 of this part can filter the plastic particles. At the same time, the dust suction pipe 28 is connected to an external vacuum cleaner, and the dust impurities that may exist in the plastic particles can be absorbed through the multiple through holes 27 to ensure that the plastic particles enter the extrusion equipment cleanly and avoid the presence of impurities in the plastic particles affecting the production quality of the protective film.

[0036] The inner wall of the storage box 21 and the inner wall of the collection bucket 25 are both provided with a rectangular groove 29, and the inner walls of the two rectangular grooves 29 are slidably connected with a horizontal plate 30 (such as Figure 5 As shown, the upper end of the horizontal plate 30 is fixedly connected to an arc plate 31, and the upper end of the arc plate 31 is fixedly connected to a dredging rod 32 corresponding to a plurality of through holes 27, and the upper surface of the arc plate 31 is directly opposite to the upper surface of the L-shaped plate 23 (as shown in FIG. Figure 2 and Figure 5 As shown in FIG. 1 ), the third rod 17 is rotatably connected to the lower end of the horizontal plate 30 through a rotating rod 33 away from the side wall of the bidirectional reciprocating screw 6 (as shown in FIG. 1 ). Figure 2 as shown).

[0037] It should be noted that the transverse plate 30 slides up and down on the inner walls of the two rectangular grooves 29 .

[0038] When the circular plate 5 drives the third rod 17 to rotate, the third rod 17 will drive the horizontal plate 30 to slide up and down through the rotating rod 33. At this time, the horizontal plate 30 will drive multiple dredging rods 32 to move up and down through the arc plate 31, so as to dredge the multiple through holes 27 facing the dredging rods 32, thereby preventing the inner wall of the through hole 27 from being blocked by smaller plastic particles and affecting its impurity removal effect.

[0039] The collecting barrel 25 is provided with a driving mechanism, which includes a one-way bearing 38. The inner wall of the collecting barrel 25 is rotatably connected to the third bevel gear 36 through the fifth rod 35. The lower end of the fourth rod 34 is fixedly connected to the fourth bevel gear 37 meshing with the third bevel gear 36. The side wall of the fifth rod 35 is fixedly connected to the inner ring side wall of the one-way bearing 38. The outer ring side wall of the one-way bearing 38 is fixedly connected to the second gear 39. The lower end of the cross plate 30 is fixedly connected to the toothed plate 40. The toothed plate 40 meshes with the second gear 39 during the up and down movement (such as Figure 6 as shown).

[0040] like Figure 5 and Figure 6As shown, when the cross plate 30 is at the top, the toothed plate 40 is separated from the second gear 39 and is located above the second gear 39, and after the cross plate 30 moves downward to separate the plurality of dredging rods 32 from the plurality of through holes 27, the toothed plate 40 is meshed with the second gear 39, and the downward movement of the toothed plate 40 drives the second gear 39 to rotate counterclockwise, and the outer ring of the one-way bearing 38 drives the inner ring to rotate, and the fifth rod 35 drives the cone plate 26 to rotate through the third bevel gear 36, the fourth bevel gear 37 and the fourth rod 34, and when the cross plate 30 moves to the bottom, the fourth rod 34 just drives the cone plate 26 to rotate half a circle, and the impurity removal part and the dredging part of the cone plate 26 are interchanged; Then the cross plate 30 continues to move upward, at this time the tooth plate 40 will drive the second gear 39 to rotate clockwise, the outer ring of the one-way bearing 38 will not drive its inner ring to rotate, and the conical plate 26 will remain in place, and then the dredging rod 32 can be driven to move upward to dredge the multiple through holes 27, and then the above steps will be repeated to achieve automatic dredging of the impurity removal part on the conical plate 26, thereby increasing its continuous impurity removal effect.

[0041] During the production of the protective film, the feed pipe 20 is then placed directly against the feed inlet of the protective film production extrusion equipment, and then the motor 4 is started to rotate, and then the first rod 2 drives the spiral conveying blade 3 to rotate; Then the staff puts the plastic particles between the inner wall of the storage box 21 and the side wall of the L-shaped plate 23. At this time, the multiple through holes 27 of this part can filter the plastic particles. At the same time, the dust suction pipe 28 is connected to the external vacuum cleaner, and the dust impurities that may exist in the plastic particles can be absorbed through the multiple through holes 27 to ensure that the plastic particles enter the extrusion equipment cleanly, and avoid the impurities in the plastic particles affecting the production quality of the protective film; The plastic particles entering the feeding box 1 can enter the extrusion equipment for producing the protective film through the feeding pipe 20 under the rotation of the spiral conveying blade 3; At the same time, the first rod 2 drives the circular plate 5 to rotate during the rotation process. At this time, the third rod 17 will rotate with the circular plate 5, and then under the action of the gear ring 18 and the first gear 19, the third rod 17 will rotate by itself, driving the multiple bidirectional reciprocating screws 6 to rotate, and under the guiding action of the two rifle rods 8, the two slides 7 will intermittently approach and move away from each other. At the same time, the movement of the slide 7 drives the threaded barrel 9 to move. At this time, the threaded barrel 9 rotates under the action of the rifle rod 8, and then the threaded barrel 9 drives the second rod 11 to rotate through the first bevel gear 13 and the second bevel gear 14, driving the multiple loose rods 12 to rotate, loosening the hygroscopic and agglomerated plastic particles, avoiding the hygroscopic and agglomerated plastic particles in the prior art from entering the extrusion equipment. The inside of the agglomerated plastic particles cannot be heated evenly in the extrusion equipment, affecting the quality of subsequent protective film extrusion; In addition, the multiple loosening rods 12 located on the two slides 7 will intermittently approach and move away during the rotation process. At the same time, the multiple loosening rods 12 located on the two slides 7 are staggered. At this time, the multiple loosening rods 12 can loosen the plastic particles in the feeding box 1 over a large range, and can also loosen plastic particles of different agglomeration sizes, thereby preventing the small agglomerated plastic particles from flowing out of the gaps between the loosening rods 12. When the circular plate 5 drives the third rod 17 to rotate, the third rod 17 drives the cross plate 30 to slide up and down through the rotating rod 33. When the cross plate 30 is at the top, the toothed plate 40 is separated from the second gear 39 and is located above the second gear 39. After the cross plate 30 moves downward to separate the plurality of dredging rods 32 from the plurality of through holes 27, the toothed plate 40 is meshed with the second gear 39. At this time, the downward movement of the toothed plate 40 drives the second gear 39 to rotate counterclockwise. At this time, the outer ring of the one-way bearing 38 drives its inner ring to rotate. The fifth rod 35 drives the conical plate 26 to rotate through the third bevel gear 36, the fourth bevel gear 37 and the fourth rod 34. When the cross plate 30 moves to the bottom, the fourth rod 34 just drives the conical plate 26 to rotate half a circle, and the impurity removal part and the dredging part of the conical plate 26 are interchanged. Then the cross plate 30 moves upward, at which time the toothed plate 40 will drive the second gear 39 to rotate clockwise, and the outer ring of the one-way bearing 38 will not drive its inner ring to rotate, so that the conical plate 26 remains in place, and then the dredging rod 32 can be driven upward to dredge the multiple through holes 27 to prevent the inner walls of the through holes 27 from being blocked by smaller plastic particles and affecting the impurity removal effect. Then the above steps will be repeated to achieve automatic dredging of the impurity removal part on the conical plate 26 and increase its continuous impurity removal effect.

[0042] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A feeding device for protective film production equipment, characterized in that: include: Feeding box (1); A feeding mechanism, the feeding mechanism comprising a first rod (2) rotatably connected to the inner wall of a feeding box (1), a spiral conveying blade (3) fixedly connected to the side wall of the first rod (2), the outer wall of the spiral conveying blade (3) being in contact with the inner wall of the feeding box (1), a motor (4) fixedly connected to the side wall of the feeding box (1), and a movable end of the motor (4) fixedly connected to one end of the first rod (2); A loosening mechanism, the loosening mechanism comprising a plurality of bidirectional reciprocating screws (6), the bidirectional reciprocating screws (6) being rotatably connected to mutually adjacent side walls of a spiral conveying blade (3), the plurality of bidirectional reciprocating screws (6) being arranged along a radial direction of a first rod (2), two adjacent bidirectional reciprocating screws (6) being fixedly connected, the side walls of the bidirectional reciprocating screws (6) being threadedly connected to two slides (7), the upper and lower ends of the slides (7) being rotatably connected to a second rod (11), and the side walls of the second rod (11) being fixedly connected to a plurality of loosening rods (12).

2. A feeding device for protective film production equipment according to claim 1, characterized in that: An annular groove is formed on the inner wall of the feeding box (1) away from the motor (4), and a rotatable circular plate (5) is sealingly and slidably connected to the inner wall of the annular groove, and the side wall of the first rod (2) is fixedly connected to the side wall of the circular plate (5).

3. A feeding device for protective film production equipment according to claim 1, characterized in that: A cavity (10) is formed on a side wall of the slide plate (7) close to the second rod (11); a threaded cylinder (9) is rotatably connected to the inner wall of the cavity (10); a first bevel gear (13) is fixedly connected to the side wall of the threaded cylinder (9); a side wall of the second rod (11) passes through the side wall of the slide plate (7) and is located in the cavity (10); a second bevel gear (14) is fixedly connected to the side wall of the second rod (11) located in the cavity (10); and the first bevel gear (13) and the second bevel gear (14) are meshed with each other.

4. A feeding device for protective film production equipment according to claim 3, characterized in that: Two rifle rods (8) are fixedly connected between mutually adjacent side walls of the spiral conveying blade (3); the two rifle rods (8) are symmetrically arranged along the axis of the bidirectional reciprocating screw (6); and the side walls of the rifle rods (8) are threadedly connected to the inner side walls of the corresponding threaded barrels (9).

5. A feeding device for protective film production equipment according to claim 4, characterized in that: A first elastic membrane (15) is sealed and fixedly connected between two adjacent slide plates (7), and a side wall of the slide plate (7) away from the first elastic membrane (15) is sealed and fixedly connected to a side wall of the spiral conveying blade (3) via a second elastic membrane (16).

6. A feeding device for protective film production equipment according to claim 2, characterized in that: A third rod (17) is fixedly connected to one end of the bidirectional reciprocating screw (6) away from the motor (4); a side wall of the third rod (17) is rotatably connected to a side wall of the circular plate (5); a gear ring (18) is fixedly connected to an inner wall of the feeding box (1) away from the motor (4); a first gear (19) is fixedly connected to a side wall of the third rod (17) away from the bidirectional reciprocating screw (6); and the gear ring (18) and the first gear (19) are meshed.

7. A feeding device for protective film production equipment according to claim 6, characterized in that: The inner bottom of the feeding box (1) close to the circular plate (5) is fixedly connected to a feeding pipe (20), and the upper end of the feeding box (1) close to the motor (4) is fixedly connected to a storage box (21) via a bracket, and the inner bottom of the storage box (21) is connected to the inner top of the feeding box (1) via a feeding pipe (22).

8. A feeding device for protective film production equipment according to claim 7, characterized in that: The storage box (21) is provided with a debris removal mechanism, the debris removal mechanism comprising an L-shaped plate (23) fixedly connected to the inner wall of the storage box (21), a conical groove (24) being provided below the side wall of the L-shaped plate (23), a fourth rod (34) being rotatably connected to the top of the conical groove (24), a conical plate (26) being fixedly connected to the side wall of the fourth rod (34), an upper surface of the conical plate (26) being in contact with the top of the conical groove (24), a plurality of through holes (27) being provided on the side wall of the conical plate (26), a collecting bucket (25) being fixedly connected to the inner side wall of the conical groove (24) below the conical plate (26), a lower end of the conical plate (26) being in contact with an upper end of the collecting bucket (25), and a dust suction pipe (28) being fixedly connected to the bottom of the collecting bucket (25).

9. A feeding device for protective film production equipment according to claim 8, characterized in that: The inner wall of the material storage box (21) and the inner wall of the collecting barrel (25) are both provided with a rectangular groove (29), the inner walls of the two rectangular grooves (29) are slidably connected to a horizontal plate (30), the upper end of the horizontal plate (30) is fixedly connected to an arc plate (31), the upper end of the arc plate (31) is fixedly connected to a dredging rod (32) corresponding to a plurality of through holes (27), the upper surface of the arc plate (31) is directly opposite to the upper surface of the L-shaped plate (23), and the side wall of the third rod (17) away from the bidirectional reciprocating screw (6) is rotatably connected to the lower end of the horizontal plate (30) through a rotating rod (33).

10. A feeding device for protective film production equipment according to claim 9, characterized in that: A driving mechanism is provided in the collecting barrel (25), the driving mechanism comprising a one-way bearing (38); the inner wall of the collecting barrel (25) is rotatably connected to a third bevel gear (36) via a fifth rod (35); the lower end of the fourth rod (34) is fixedly connected to a fourth bevel gear (37) meshing with the third bevel gear (36); the side wall of the fifth rod (35) is fixedly connected to an inner ring side wall of the one-way bearing (38); the outer ring side wall of the one-way bearing (38) is fixedly connected to a second gear (39); the lower end of the transverse plate (30) is fixedly connected to a toothed plate (40); the toothed plate (40) meshes with the second gear (39) during the upward and downward movement.

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