阅读说明：本技术 一种塑料薄膜造粒机 (Plastic film granulator ) 是由 谢传淞 吴玉坤 于 2020-04-30 设计创作，主要内容包括：本发明属于塑料薄膜制造技术领域,具体的说是一种塑料薄膜造粒机,包括底座；底座上固连有热熔单元,热熔单元用于加热并融化薄膜碎片,之后将热熔物挤出；热熔单元一侧设有将热熔物冷却和造粒的造粒单元；热熔单元远离造粒单元的一侧设有用于粉碎薄膜的粉碎单元,粉碎单元远离热熔单元的一端转动连接有主动辊,主动辊通过减速电机驱动,减速电机通过控制器连接电源；主动辊远离粉碎单元一侧的底座上固连有一对支架,两个支架之间转动连接有从动辊和支撑辊,废旧薄膜通过从动辊与支撑辊的挤压之后通过主动辊导向并输入粉碎单元；本发明通过从动辊挤压废旧薄膜上的泥土,减少塑料颗粒的杂质含量。(The invention belongs to the technical field of plastic film manufacturing, and particularly relates to a plastic film granulator which comprises a base; the base is fixedly connected with a hot melting unit, and the hot melting unit is used for heating and melting the film fragments and then extruding hot melts; one side of the hot melting unit is provided with a granulating unit for cooling and granulating the hot melt; one side of the hot melting unit, which is far away from the granulating unit, is provided with a crushing unit for crushing the film, one end of the crushing unit, which is far away from the hot melting unit, is rotatably connected with a driving roller, the driving roller is driven by a speed reducing motor, and the speed reducing motor is connected with a power supply through a controller; a pair of supports is fixedly connected to a base on one side, away from the crushing unit, of the driving roller, a driven roller and a supporting roller are rotatably connected between the two supports, and the waste film is extruded by the driven roller and the supporting roller, guided by the driving roller and input into the crushing unit; the invention reduces the impurity content of plastic particles by extruding the soil on the waste film through the driven roller.)

1. A plastic film pelletizer, characterized in that: comprises a base (1); the base (1) is fixedly connected with a hot melting unit (11), the hot melting unit (11) is used for heating and melting film fragments, and then hot melts are extruded out; a granulating unit (12) for cooling and granulating the hot melt is arranged on one side of the hot melt unit (11); one side, away from the granulating unit (12), of the hot melting unit (11) is provided with a crushing unit (13) for crushing a film, one end, away from the hot melting unit (11), of the crushing unit (13) is rotatably connected with a driving roller (14), the driving roller (14) is driven by a speed reducing motor, and the speed reducing motor is connected with a power supply through a controller; a pair of supports (15) is fixedly connected to the base (1) on one side, away from the crushing unit (13), of the driving roller (14), a driven roller (2) and a supporting roller (21) are rotatably connected between the two supports (15), and the waste thin film is extruded by the driven roller (2) and the supporting roller (21) and then guided by the driving roller (14) and input into the crushing unit (13); the driven roller (2) is used for extruding the soil on the waste film, so that the impurity content of the plastic particles is reduced.

2. A plastic film pelletizer as claimed in claim 1, wherein: the driven roller (2) is lower than the driving roller (14); a sliding block (22) is arranged on the support (15), a U-shaped groove (23) with an upward opening is formed in the sliding block (22), and a rotating shaft (24) of the driven roller (2) is sleeved in the U-shaped groove (23) and is rotationally connected with the U-shaped groove (23); a group of arc-shaped grooves (25) are uniformly distributed on the circumference of one end of the rotating shaft (24) positioned in the U-shaped groove (23), and a clamping block (26) is fixedly connected with the U-shaped groove (23) at a position corresponding to the arc-shaped grooves (25); the driven roller (2) is vibrated when the arc-shaped groove (25) passes through the clamping block (26), so that the soil adhered to the film is further reduced, and the impurity content of plastic particles is reduced.

3. A plastic film pelletizer as claimed in claim 2, wherein: a cavity (3) is formed in the driven roller (2), an eccentric roller (31) is arranged in the cavity (3), and the outer diameter of the eccentric roller (31) is smaller than the diameter of the cavity (3); a group of puncture needles (32) are uniformly distributed on the periphery of the eccentric roller (31), a group of through holes (33) are uniformly distributed on the driven roller (2) at the circumference corresponding to the puncture needles (32), the puncture needles (32) penetrate through the through holes (33) to puncture the film, waste liquid wrapped in the film is reduced, and the impurity content of plastic particles is further reduced.

4. A plastic film pelletizer as claimed in claim 3, wherein: a first hole (34) is formed in the rotating shaft (24) between the adjacent arc-shaped grooves (25), a sliding column (35) is connected in the first hole (34) in a sliding and sealing mode, and a spring is arranged between the sliding column (35) and the bottom of the first hole (34); no. two holes (36) are formed in the bottom of the first hole (34), the second hole (36) is communicated with the cavity (3) through a communicating hole formed in the rotating shaft (24), air is blown into the cavity (3) through the first hole (34), the cavity (3) is guaranteed to be in a positive pressure environment, and dust is prevented from entering the cavity (3) and blocking the eccentric roller (31) to normally work.

5. A plastic film pelletizer as claimed in claim 4, wherein: one end, far away from the driven roller (2), of the sliding block (22) is fixedly connected with an outer gear ring (37), a gear (38) is fixedly connected with a position, corresponding to the outer gear ring (37), of a rotating shaft of the driving roller (14), and the gear (38) and the outer gear ring (37) are driven through a synchronous belt (39); a group of toothless parts (310) are uniformly arranged on the inner side of the synchronous belt (39); the support (15) is provided with a J-shaped sliding groove (311), and the sliding block (22) is connected with the sliding groove (311) in a sliding manner; the driven roller (2) is driven to intermittently slide by the synchronous belt (39), so that the shaking of the film is increased, and the impurity content of plastic particles is further reduced.

6. A plastic film pelletizer as claimed in claim 5, wherein: a blast pipe (4) is arranged on one side of the driving roller (14) far away from the crushing unit (13), and the blast pipe (4) is fixedly connected with the crushing unit (13) through a connecting plate; the cross section of the blast pipe (4) is horn-shaped, a group of exhaust holes (41) are formed in the inner wall of the blast pipe (4), and the exhaust holes (41) face to one side far away from the driving roller (14); the air exhaust holes (41) are communicated with the air blower through pipelines, and the air flow blown out through the air exhaust holes (41) further reduces the soil adhered to the film and reduces the impurity content of plastic particles.

Technical Field

The invention belongs to the technical field of plastic film manufacturing, and particularly relates to a plastic film granulator.

Background

The plastic film is a common daily product for people, and has the advantages of good transparency, good moisture resistance, excellent heat resistance, convenient use, low price and the like, and is widely used in various industries.

At present, a large amount of plastic wastes are generated in the production and living processes, and the plastic wastes cannot be degraded after being discarded into the natural environment, so that serious white pollution is caused, and the environment is damaged. The recycling of the plastic wastes can reduce white pollution and protect the environment, and can save resources and improve economic benefits. The existing granulator directly extrudes and cuts the plastic film, so that more impurities exist in finished granules, and the quality of the finished products is influenced.

Disclosure of Invention

In order to make up for the defects of the prior art and solve the problem that the prior art cannot well remove impurities on films, the waste films are mostly sourced from farms and recycle bins, a lot of mud and waste liquid are mixed in the films, the mud and the waste liquid pollute the films, the content of the impurities in produced plastic particles exceeds the standard, and the product quality of the plastic particles is further influenced, the plastic film granulator provided by the invention has the advantages that the plastic film granulator is simple in structure, convenient to use, and low in cost.

The technical scheme adopted by the invention for solving the technical problems is as follows: the plastic film granulator comprises a base; the base is fixedly connected with a hot melting unit, and the hot melting unit is used for heating and melting film fragments and then extruding hot melts; one side of the hot melting unit is provided with a granulating unit for cooling and granulating the hot melt; one side of the hot melting unit, which is far away from the granulating unit, is provided with a crushing unit for crushing the film, one end of the crushing unit, which is far away from the hot melting unit, is rotatably connected with a driving roller, the driving roller is driven by a speed reducing motor, and the speed reducing motor is connected with a power supply through a controller; a pair of supports is fixedly connected to a base on one side, away from the crushing unit, of the driving roller, a driven roller and a supporting roller are rotatably connected between the two supports, and the waste film is extruded by the driven roller and the supporting roller, guided by the driving roller and input into the crushing unit; the driven roller is used for extruding the soil on the waste film, so that the impurity content of the plastic particles is reduced; when the plastic film forming machine works, a waste plastic film passes through a gap between the driven roller and the supporting roller and then is conveyed into the crushing unit through the guide of the driving roller, the waste plastic film is crushed by the crushing unit to be changed into film fragments, the film fragments are heated and melted by the hot melting unit and then extruded out, and plastic particle raw materials are formed after cooling and granulation by the granulation unit so as to prepare for subsequent plastic processing and forming, as most of the waste plastic film comes from farms and recycling stations, a plurality of soil and waste liquid are mixed in the film and pollute the film, so that the content of impurities in the produced plastic particles exceeds the standard, and further the product quality of the plastic particles is influenced, at the moment, the driven roller arranged in the plastic film forming machine is matched with the extrusion of the waste plastic film, so that soil impurities adhered to the supporting roller are crushed, and then the impurities are shaken off in the moving process of the, and then reduce the earth impurity of adhesion on the film, improve plastic granules's purity, and then increase the production quality of granulator.

Preferably, the driven roller is lower in height than the drive roller; the bracket is provided with a sliding block, the sliding block is internally provided with a U-shaped groove with an upward opening, and the rotating shaft of the driven roller is sleeved in the U-shaped groove and is rotationally connected with the U-shaped groove; a group of arc-shaped grooves are uniformly distributed on the circumference of one end of the rotating shaft, which is positioned in the U-shaped groove, and a clamping block is fixedly connected with the U-shaped groove at the position corresponding to the arc-shaped grooves; the driven roller is caused to vibrate when the arc-shaped groove passes through the clamping block, so that the soil adhered to the film is further reduced, and the impurity content of plastic particles is reduced; because the pivot is located a set of arc wall of one end circumference equipartition of U-shaped inslot, make the pivot form the petal form of periphery unevenness, and then the cooperation fixture block, make the pivot constantly cross the fixture block at the rotation in-process, and then make pivot and driven voller constantly up and down reciprocating motion, utilize the continuous crowded great earth granule of garrulous diameter of driven voller's falling motion under the action of gravity, and then increase the efficiency of cleaing away of the earth granule of adhesion on the film, up and down reciprocating motion's driven voller has increased the vibration range through the old and useless film of driven voller simultaneously, and then increase the efficiency that old and useless film shaken off earth, and then further reduce plastic granules's.

Preferably, a cavity is formed in the driven roller, an eccentric roller is arranged in the cavity, and the outer diameter of the eccentric roller is smaller than the diameter of the cavity; a group of prickers are uniformly distributed on the periphery of the eccentric roller, a group of perforations are uniformly distributed on the driven roller at the periphery corresponding to the prickers, and the prickers penetrate through the perforations to puncture the film, so that waste liquid wrapped in the film is reduced, and the impurity content of plastic particles is further reduced; constantly drive eccentric roller through the driven voller at the rotation in-process and rotate, and then make the felting needle pass the perforation and puncture the film, and then cooperate the backing roll to the extrusion of film, carry out quick discharge with the waste liquid of parcel in the film, the discharge efficiency of waste liquid in the film has been increased, and then further reduce plastic granules's impurity content, simultaneously after the felting needle punctures the film, because the eccentric roller external diameter is less than the cavity diameter, when making eccentric roller rotate along with the driven roll under the effect of self gravity, it withdraws the perforation after driving the felting needle puncture the film, and then reduce the influence that the felting needle carried to the film, avoid felting needle adhesion film winding driven voller, further increase the conveying efficiency of film, guarantee film granulator's production efficiency.

Preferably, a first hole is formed in the rotating shaft between the adjacent arc-shaped grooves, a sliding column is connected in the first hole in a sliding and sealing mode, and a spring is arranged between the sliding column and the bottom of the first hole; the bottom of the first hole is provided with a second hole, the second hole is communicated with the cavity through a communicating hole formed in the rotating shaft, air is blown into the cavity through the first hole, a positive pressure environment is ensured to be in the cavity, and dust is reduced to enter the cavity to prevent the eccentric roller from normally working; when the arc wall was when the fixture block was passed through along with the rotation of pivot, the fixture block constantly extrudeed the traveller, and then made the traveller slide to a hole bottom for produce compressed air in the hole, compressed air fills in the cavity through No. two holes and intercommunicating pore, and then makes the atmospheric pressure in the cavity slightly be greater than external atmospheric pressure, and then reduces waste liquid and earth granule and hinders the normal rotation of eccentric roller in getting into the cavity through the perforation, reduces the corruption that the eccentric roller received fertile waste liquid simultaneously, increases film granulator's life.

Preferably, one end of the sliding block, which is far away from the driven roller, is fixedly connected with an outer gear ring, a gear is fixedly connected with a position, corresponding to the outer gear ring, of a rotating shaft of the driving roller, and the gear and the outer gear ring are driven by a synchronous belt; a group of toothless parts are uniformly arranged on the inner side of the synchronous belt; the bracket is provided with a J-shaped sliding groove, and the sliding block is connected with the sliding groove in a sliding manner; the driven roller is driven to intermittently slide by the synchronous belt, so that the shaking of the film is increased, and the impurity content of the plastic particles is further reduced; when the driving roller is driven to rotate by the speed reducing motor, the driving roller drives the gear to rotate, and a group of toothless parts are uniformly arranged on the inner side of the synchronous belt due to the fact that the gear and the outer gear ring are driven by the synchronous belt; the utility model discloses a plastic film, including the support, the spout of J-shaped has been seted up on the support, slider and spout sliding connection, and then make hold-in range and outer ring gear be in intermittent type nature meshing, when hold-in range and outer ring gear meshing, the hold-in range rotates and drives driven voller and slider and slide to the direction that is close to the drive roll in the spout, when the hold-in range rotated no tooth portion, outer ring gear and hold-in range break away from the meshing, and then make the driven voller glide under the effect of self gravity, and then make the continuous upper and lower slip in the spout of driven voller, the range of shaking of the old and useless film between further increased driven voller and the drive roll, and then further reduce.

Preferably, one side of the driving roller, which is far away from the crushing unit, is provided with a blast pipe, and the blast pipe is fixedly connected with the crushing unit through a connecting plate; the cross section of the blast pipe is horn-shaped, the inner wall of the blast pipe is provided with a group of air exhaust holes, and the air exhaust holes face to one side far away from the driving roller; the air exhaust hole is communicated with the air blower through a pipeline, and the air flow blown out through the air exhaust hole further reduces the soil adhered to the film and reduces the impurity content of plastic particles; carry out the air-blowing through the air-blower to the hole of airing exhaust, and then make the hole of airing exhaust blow out quick air current to the film, and then increase the efficiency of cleaing away of the waste liquid of adhesion and the earth after pulverizing on the film, simultaneously because the hole of airing exhaust is towards the one side of keeping away from the drive roll for the hole exhaust high-speed air current of airing exhaust drives the shake with higher speed of film, increases the vibration frequency of film, further increases the clean efficiency reduction plastic granules's of film impurity content.

The invention has the following beneficial effects:

1. according to the plastic film granulator, the waste plastic films are extruded by the driven roller and the supporting roller, so that soil impurities adhered to the films are crushed, and then the impurities are shaken off in the moving process of the films, so that the soil impurities adhered to the films are reduced, the purity of plastic particles is improved, and the production quality of the granulator is improved.

2. According to the plastic film granulator, the driven roller continuously drives the eccentric roller to rotate in the rotating process, so that the puncture needle penetrates through the perforation and punctures the film, the waste liquid wrapped in the film is rapidly discharged by being matched with the extrusion of the supporting roller on the film, the discharge efficiency of the waste liquid in the film is increased, and the impurity content of plastic particles is further reduced.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 1 at A;

FIG. 4 is an enlarged view of a portion of FIG. 2 at B;

FIG. 5 is an enlarged view of a portion of FIG. 2 at C;

FIG. 6 is a partial cross-sectional view of a rotating shaft according to the present invention;

in the figure: the device comprises a base 1, a hot melting unit 11, a granulating unit 12, a crushing unit 13, a driving roller 14, a bracket 15, a driven roller 2, a supporting roller 21, a sliding block 22, a U-shaped groove 23, a rotating shaft 24, an arc-shaped groove 25, a clamping block 26, a cavity 3, an eccentric roller 31, a puncture needle 32, a through hole 33, a first hole 34, a sliding column 35, a second hole 36, an external gear ring 37, a gear 38, a synchronous belt 39, a toothless part 310, a sliding groove 311, a blast pipe 4 and an exhaust hole 41.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 6, the plastic film pelletizer of the present invention includes a base 1; the base 1 is fixedly connected with a hot melting unit 11, the hot melting unit 11 is used for heating and melting film fragments, and then hot melts are extruded out; one side of the hot melting unit 11 is provided with a granulating unit 12 for cooling and granulating the hot melt; a crushing unit 13 for crushing the film is arranged on one side of the hot melting unit 11, which is far away from the granulating unit 12, one end of the crushing unit 13, which is far away from the hot melting unit 11, is rotatably connected with a driving roller 14, the driving roller 14 is driven by a speed reducing motor, and the speed reducing motor is connected with a power supply through a controller; a pair of supports 15 is fixedly connected to the base 1 on one side, away from the crushing unit 13, of the driving roller 14, a driven roller 2 and a supporting roller 21 are rotatably connected between the two supports 15, and waste films are extruded by the driven roller 2 and the supporting roller 21 and then guided by the driving roller 14 and input into the crushing unit 13; the driven roller 2 is used for extruding soil on the waste film to reduce the impurity content of plastic particles; when the plastic film forming machine works, a waste plastic film passes through a gap between the driven roller 2 and the supporting roller 21 and then is conveyed into the crushing unit 13 through the guide of the driving roller 14, the waste plastic film is crushed by the crushing unit 13 to form film fragments, the film fragments are heated and melted by the hot melting unit 11 and then extruded out, and plastic particle raw materials are formed after cooling and granulation of the granulation unit 12 so as to prepare for subsequent plastic processing and forming, as most of the waste plastic film comes from farms and recycling stations, a great amount of soil and waste liquid are mixed in the film and pollute the film, so that the content of impurities in the produced plastic particles exceeds the standard, and further the product quality of the plastic particles is influenced, at the moment, the driven roller 2 arranged in the plastic film forming machine is matched with the supporting roller 21 to extrude the waste plastic film, so that soil impurities adhered on the film are crushed, and then the impurities are shaken off in the moving process of the, and then reduce the earth impurity of adhesion on the film, improve plastic granules's purity, and then increase the production quality of granulator.

As an embodiment of the present invention, the driven roller 2 is lower in height than the drive roller 14; a sliding block 22 is arranged on the bracket 15, a U-shaped groove 23 with an upward opening is formed in the sliding block 22, and a rotating shaft 24 of the driven roller 2 is sleeved in the U-shaped groove 23 and is rotatably connected with the U-shaped groove 23; a group of arc-shaped grooves 25 are uniformly distributed on the circumference of one end of the rotating shaft 24 positioned in the U-shaped groove 23, and a clamping block 26 is fixedly connected with the U-shaped groove 23 at a position corresponding to the arc-shaped grooves 25; the driven roller 2 is caused to vibrate when the arc-shaped groove 25 passes through the clamping block 26, so that the soil adhered to the film is further reduced, and the impurity content of plastic particles is reduced; because the pivot 24 is located a set of arc wall 25 of one end circumference equipartition in U-shaped groove 23, make pivot 24 form the petal form of periphery unevenness, and then cooperation fixture block 26, make pivot 24 constantly cross fixture block 26 at the rotation in-process, and then make pivot 24 and driven voller 2 constantly up-and-down reciprocating, utilize driven voller 2 constantly to crowd the great earth granule of garrulous diameter in the falling motion of action of gravity, and then increase the efficiency of cleaing away of the earth granule of adhesion on the film, up-and-down reciprocating's driven voller 2 has increased the vibration range through driven voller 2's old and useless film simultaneously, and then increase the efficiency that old and useless film shaken off earth, and then further reduce plastic granules's impurity content.

As an embodiment of the invention, a cavity 3 is formed in the driven roller 2, an eccentric roller 31 is arranged in the cavity 3, and the outer diameter of the eccentric roller 31 is smaller than the diameter of the cavity 3; a group of puncture needles 32 are uniformly distributed on the periphery of the eccentric roller 31, a group of through holes 33 are uniformly distributed on the driven roller 2 at the circumference corresponding to the puncture needles 32, the puncture needles 32 penetrate through the through holes 33 to puncture the film, so that waste liquid wrapped in the film is reduced, and the impurity content of plastic particles is further reduced; continuously drive eccentric roller 31 to rotate in the rotation process through driven roller 2, and then make felting needle 32 pass perforation 33 and pierce the film, and then cooperate backing roll 21 to the extrusion of film, carry out quick discharge with the waste liquid of parcel in the film, the discharge efficiency of waste liquid in the film has been increased, and then further reduce plastic granules's impurity content, simultaneously after felting needle 32 pierces the film, because eccentric roller 31 external diameter is less than cavity 3 diameter, make eccentric roller 31 when following driven roller 2 rotation under the effect of self gravity, drive felting needle 32 and pierce and retrieve perforation 33 after the film, and then reduce the influence that felting needle 32 carried to the film, avoid felting needle 32 adhesion film winding driven roller 2, further increase the transport efficiency of film, guarantee the production efficiency of film felting needle granulator.

As an embodiment of the invention, a first hole 34 is formed in the rotating shaft 24 between the adjacent arc-shaped grooves 25, a sliding column 35 is connected in the first hole 34 in a sliding and sealing manner, and a spring is arranged between the sliding column 35 and the bottom of the first hole 34; a second hole 36 is formed in the bottom of the first hole 34, the second hole 36 is communicated with the cavity 3 through a communicating hole formed in the rotating shaft 24, air is blown into the cavity 3 through the first hole 34, the cavity 3 is ensured to be in a positive pressure environment, and dust is prevented from entering the cavity 3 and hindering the normal work of the eccentric roller 31; when the arc-shaped groove 25 passes through the fixture block 26 along with the rotation of the rotating shaft 24, the fixture block 26 continuously extrudes the sliding column 35, so that the sliding column 35 slides towards the bottom of the first hole 34, compressed air is generated in the first hole 34, the compressed air is filled into the cavity 3 through the second hole 36 and the communicating hole, the air pressure in the cavity 3 is slightly larger than the external atmospheric pressure, waste liquid and soil particles are reduced to enter the cavity 3 through the through hole 33 to block the normal rotation of the eccentric roller 31, meanwhile, the corrosion of the waste liquid to the eccentric roller 31 is reduced, and the service life of the film granulator is prolonged.

As an embodiment of the invention, one end of the sliding block 22, which is far away from the driven roller 2, is fixedly connected with an external gear ring 37, a gear 38 is fixedly connected to a position, corresponding to the external gear ring 37, of a rotating shaft of the driving roller 14, and the gear 38 and the external gear ring 37 are driven by a synchronous belt 39; a group of toothless parts 310 are uniformly arranged on the inner side of the synchronous belt 39; the bracket 15 is provided with a J-shaped sliding groove 311, and the sliding block 22 is connected with the sliding groove 311 in a sliding manner; the driven roller 2 is driven to intermittently slide by the synchronous belt 39, so that the shaking of the film is increased, and the impurity content of plastic particles is further reduced; when the driving roller 14 is driven to rotate by the speed reducing motor, the driving roller 14 drives the gear 38 to rotate, and a group of toothless parts 310 are uniformly arranged on the inner side of the synchronous belt 39 as the gear 38 and the outer gear ring 37 are driven by the synchronous belt 39; the support 15 is provided with a J-shaped sliding groove 311, the sliding block 22 is connected with the sliding groove 311 in a sliding manner, so that the synchronous belt 39 and the outer gear ring 37 are in intermittent engagement, when the synchronous belt 39 is engaged with the outer gear ring 37, the synchronous belt 39 rotates to drive the driven roller 2 and the sliding block 22 to slide in the sliding groove 311 in a direction close to the driving roller 14, when the synchronous belt 39 rotates to the toothless part 310, the outer gear ring 37 is disengaged from the synchronous belt 39, so that the driven roller 2 slides downwards under the action of self gravity, and the driven roller 2 continuously slides up and down in the sliding groove 311, so that the shaking amplitude of the waste film between the driven roller 2 and the driving roller 14 is further increased, impurities carried on the film are further reduced, and the impurity content of plastic particles is reduced.

As an embodiment of the present invention, a blast pipe 4 is disposed on a side of the driving roll 14 away from the crushing unit 13, and the blast pipe 4 is fixedly connected with the crushing unit 13 through a connecting plate; the cross section of the blast pipe 4 is horn-shaped, the inner wall of the blast pipe 4 is provided with a group of exhaust holes 41, and the exhaust holes 41 face to one side far away from the driving roller 14; the air exhaust holes 41 are communicated with the air blower through pipelines, and the air flow blown out through the air exhaust holes 41 further reduces the soil adhered to the film and reduces the impurity content of plastic particles; carry out the air-blowing through the air-blower to the hole 41 of airing exhaust, and then make the hole 41 of airing exhaust blow out quick air current to the film, and then increase the waste liquid of adhesion on the film and the efficiency of cleaing away of the earth after pulverizing, simultaneously because the hole 41 of airing exhaust is towards the one side of keeping away from the drive roll 14 for the high-speed air current of hole 41 exhaust of airing exhaust drives the shake with higher speed of film, increases the vibration frequency of film, further increases the clean efficiency reduction plastic granules's of film impurity content.

When the plastic film forming machine works, a waste plastic film passes through a gap between the driven roller 2 and the supporting roller 21 and then is conveyed into the crushing unit 13 through the guide of the driving roller 14, the waste plastic film is crushed by the crushing unit 13 to form film fragments, the film fragments are heated and melted by the hot melting unit 11 and then extruded out, and plastic particle raw materials are formed after cooling and granulation of the granulation unit 12 so as to prepare for subsequent plastic processing and forming, as most of the waste plastic film comes from farms and recycling stations, a great amount of soil and waste liquid are mixed in the film and pollute the film, so that the content of impurities in the produced plastic particles exceeds the standard, and further the product quality of the plastic particles is influenced, at the moment, the driven roller 2 arranged in the plastic film forming machine is matched with the supporting roller 21 to extrude the waste plastic film, so that soil impurities adhered on the film are crushed, and then the impurities are shaken off in the moving process of the, further reducing soil impurities adhered to the film, improving the purity of plastic particles and further increasing the production quality of the granulator; because the rotating shaft 24 is uniformly distributed with a group of arc-shaped grooves 25 at one end circumference in the U-shaped groove 23, the rotating shaft 24 is in a petal shape with uneven periphery, and further is matched with the clamping block 26, so that the rotating shaft 24 continuously slides across the clamping block 26 in the rotating process, and further the rotating shaft 24 and the driven roller 2 continuously reciprocate up and down, and the driven roller 2 continuously crushes the soil particles with larger diameter by utilizing the falling motion under the action of gravity, so that the removal efficiency of the soil particles adhered on the film is increased, and meanwhile, the driven roller 2 which reciprocates up and down increases the vibration amplitude of the waste film passing through the driven roller 2, so that the efficiency of shaking off the soil by the waste film is increased, and further the impurity content of the; the driven roller 2 continuously drives the eccentric roller 31 to rotate in the rotating process, so that the puncture needle 32 penetrates through the through hole 33 and punctures the film, the supporting roller 21 is matched to extrude the film, waste liquid wrapped in the film is rapidly discharged, the discharge efficiency of the waste liquid in the film is increased, the impurity content of plastic particles is further reduced, and meanwhile, after the puncture needle 32 punctures the film, because the outer diameter of the eccentric roller 31 is smaller than the diameter of the cavity 3, the eccentric roller 31 rotates along with the driven roller 2 under the action of self gravity, the puncture needle 32 is driven to puncture the film and then withdraw the through hole 33, the influence of the puncture needle 32 on the film conveying is reduced, the puncture needle 32 is prevented from being adhered to the film and winding the driven roller 2, the conveying efficiency of the film is further increased, and the production efficiency of the film; when the arc-shaped groove 25 passes through the fixture block 26 along with the rotation of the rotating shaft 24, the fixture block 26 continuously extrudes the sliding column 35, so that the sliding column 35 slides towards the bottom of the first hole 34, compressed air is generated in the first hole 34, the compressed air is filled into the cavity 3 through the second hole 36 and the communicating hole, the air pressure in the cavity 3 is slightly larger than the external atmospheric pressure, waste liquid and soil particles are further reduced to enter the cavity 3 through the through hole 33 to block the normal rotation of the eccentric roller 31, meanwhile, the corrosion of the eccentric roller 31 by the waste liquid is reduced, and the service life of the film granulator is prolonged; when the driving roller 14 is driven to rotate by the speed reducing motor, the driving roller 14 drives the gear 38 to rotate, and a group of toothless parts 310 are uniformly arranged on the inner side of the synchronous belt 39 as the gear 38 and the outer gear ring 37 are driven by the synchronous belt 39; the support 15 is provided with a J-shaped sliding groove 311, the sliding block 22 is in sliding connection with the sliding groove 311, so that the synchronous belt 39 and the outer gear ring 37 are in intermittent meshing, when the synchronous belt 39 is meshed with the outer gear ring 37, the synchronous belt 39 rotates to drive the driven roller 2 and the sliding block 22 to slide in the sliding groove 311 in the direction close to the driving roller 14, when the synchronous belt 39 rotates to the toothless part 310, the outer gear ring 37 is disengaged from the synchronous belt 39, so that the driven roller 2 slides downwards under the action of self gravity, the driven roller 2 continuously slides upwards and downwards in the sliding groove 311, the shaking amplitude of the waste film between the driven roller 2 and the driving roller 14 is further increased, impurities carried on the film are further reduced, and the impurity content of plastic particles is reduced; carry out the air-blowing through the air-blower to the hole 41 of airing exhaust, and then make the hole 41 of airing exhaust blow out quick air current to the film, and then increase the waste liquid of adhesion on the film and the efficiency of cleaing away of the earth after pulverizing, simultaneously because the hole 41 of airing exhaust is towards the one side of keeping away from the drive roll 14 for the high-speed air current of hole 41 exhaust of airing exhaust drives the shake with higher speed of film, increases the vibration frequency of film, further increases the clean efficiency reduction plastic granules's of film impurity content.

The front, the back, the left, the right, the upper and the lower are all based on figure 1 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.