CN111673947A - Cutting side band recycling mechanism for plastic sheet production - Google Patents
Cutting side band recycling mechanism for plastic sheet production Download PDFInfo
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- CN111673947A CN111673947A CN202010507821.XA CN202010507821A CN111673947A CN 111673947 A CN111673947 A CN 111673947A CN 202010507821 A CN202010507821 A CN 202010507821A CN 111673947 A CN111673947 A CN 111673947A
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- Prior art keywords
- roller
- cutting
- plastic sheet
- rack
- sheet production
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/0005—Direct recuperation and re-use of scrap material during moulding operation, i.e. feed-back of used material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
- B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
- B26D1/26—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis substantially perpendicular to the line of cut
- B26D1/28—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis substantially perpendicular to the line of cut and rotating continuously in one direction during cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
- B26D7/2614—Means for mounting the cutting member
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
- B29B17/0412—Disintegrating plastics, e.g. by milling to large particles, e.g. beads, granules, flakes, slices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B2017/001—Pretreating the materials before recovery
- B29B2017/0021—Dividing in large parts
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Abstract
The invention discloses a cutting side band recycling mechanism for plastic sheet production, which sequentially comprises a side band conveying and cutting device, a conveying belt and a crusher from front to back according to the process flow. The side belt conveying and cutting device comprises a first guide roller, a second guide roller, a slitting knife, a traction pair roller and a cutting device which are sequentially arranged on the rack from front to back. Open grooves are formed in two ends of the fixed shaft, limiting clamping blocks are connected in the open grooves through springs, and the limiting clamping blocks are exposed out of the open grooves; a through hole is formed in the slitting knife, the slitting knife is inserted into the fixed shaft through the through hole, and the end part of the limiting clamping block is abutted against the inner wall of the through hole; the rack is also provided with a sliding chute, the section of the sliding chute is in an arc shape, and the bottom of the slitting knife is matched with the section of the sliding chute; a cutting knife in the cutting device is used for cutting the edge band conveyed from the traction roller pair. The invention has the advantages of strong flowing water property of sideband recycling and secondary utilization and sideband recycling and cleaning.
Description
Technical Field
The invention relates to the technical field of plastic part processing, in particular to a cutting edge band recycling mechanism for plastic sheet production.
Background
The plastic sheet is a plastic coiled material which is obtained by heating plastic raw materials (particles) in a plastic extruder or a plastic calender, melting, and extruding or calendering to obtain a thickness of about 0.25-1.00 mm.
The prior art plastic sheet production and processing device, such as the high-grade PC optical-grade sheet extrusion line disclosed in patent application 201820747567.9, sequentially comprises a feeding mechanism, a film forming mechanism, a traction mechanism, an edge cutting mechanism, and a finished product collecting mechanism in the order from front to back of the process flow. The film forming mechanism comprises a frame, an extruder for melting solid granular raw materials into colloidal state and outputting, a screen changer for filtering impurities, a die for sheet forming, a three-roller calender for sheet calendering, finishing the surface of a PC sheet, cooling the sheet and the like.
In the processing process of the plastic sheet, the trimmings at the two ends of the width direction of the plastic sheet are poor in smoothness and need to be cut off through a trimming mechanism. The edge cutting device disclosed in patent application 201420052345.7 for plastic extrusion sheet production line utilizes the cutting action of upper and lower circular knives to cut both edges of the sheet.
In order to fully utilize the trimmed side bands, the side bands are fed into an extruder of the film forming mechanism again for secondary use. Before the side band in the prior art is put into a crusher, the side band is accumulated on the ground, is cut into small pieces in advance and then is put into the crusher; after crushing, the mixture is put into an extruder for secondary processing.
The sideband processing mode has the following defects: firstly, the recycling of the side band and the processing of the plastic sheet in the previous process are intermittent, and the online flowing property of the recycling of the side band cannot be realized; secondly, the side bands are accumulated on the ground, so that the side bands are easily polluted, and the quality of the product can be influenced by directly crushing and putting the side bands into an extruder; and thirdly, no good continuity is formed between the cutting of the side band and the crushing of the side band.
Disclosure of Invention
The invention provides a mechanism for recycling cutting side bands for producing plastic sheets, aiming at the technical problems that the recycling of the side bands produced in the processing process of the plastic sheets in the prior art is poor in process water flowing property and the quality of products is affected due to the fact that the side bands fall to the ground for treatment.
The invention solves the technical problems by the following technical means: a cutting side belt recycling mechanism for plastic sheet production sequentially comprises a side belt conveying and cutting device, a conveying belt and a crusher from front to back according to a process flow; the crusher is communicated with the extruder through a material guide pipe;
the side belt cut from the plastic sheet production line is cut off by the side belt conveying and cutting device, and the cut side belt is conveyed to the crusher by the conveying belt; the crusher is used for crushing the cut sideband; feeding the crushed material into a feed inlet of an extruder through a material lifting device and a material guide pipe;
the side belt conveying and cutting device comprises a rack, a first guide roller, a second guide roller, a slitting knife, a fixed shaft, a spring, a traction pair roller and a cutting device;
the first guide roller and the second guide roller are rotatably arranged at the front end of the rack at intervals; the traction pair rollers are rotatably arranged at the rear end of the rack; the fixed shaft is fixed on the rack and is positioned between the second guide roller and the traction pair roller; open grooves are formed in two ends of the fixed shaft, limited clamping blocks are connected to the open grooves through springs, and the limited clamping blocks are exposed out of the open grooves;
the two slitting knives are symmetrically positioned on two sides of the rack; each strip cutter is provided with a through hole, the strip cutter is inserted into the fixed shaft through the through hole, and the end part of the limiting clamping block is abutted against the inner wall of the through hole; the rack is also provided with a sliding chute, the section of the sliding chute is in an arc shape, the section of the bottom of the slitting knife is in an arc shape matched with the section of the sliding chute, and the knife edge of the slitting knife faces upwards and is used for slitting the side belt conveyed from the second guide roller; the cutting knife in the cutting device is used for cutting the edge band conveyed from the traction roller pair.
The end parts of the side bands of the plastic sheet after being cut from the edge cutting mechanism on the plastic sheet production and processing device are guided by the first guide roller and the second guide roller in sequence and then pass through the slitting knives, the side bands are divided into three side bands, the three side bands are fed between the first roller and the second roller at the same time, the traction double rollers are started, the side bands are continuously conveyed under the action of the traction force of the traction double rollers, after the three side bands are conveyed to the tail end of the rack, the three side bands of the rack part are exposed and droop, at the moment, the cutting knives press the cutting action to cut off the three side bands, and the three side bands fall down. When the next three sub-side bands droop to the same length, the cutting-off knife presses down again for cutting off, and therefore the strip splitting and intermittent cutting-off of the side bands are completed. The three cut sub-side belts are conveyed to a feed inlet of the crusher under the conveying action of the conveying belt conveying device, and crushed materials are obtained after the crushing of the crusher and are cached in a crushing bin of the crusher. When the crushed material needs to be recycled for the second time, the crushed material is extracted into the extruder through the material guide pipe by opening the valve on the material guide pipe and starting the material extracting device, and the secondary extrusion processing is carried out.
The cutting side band recycling mechanism for plastic sheet production is arranged between a longitudinal slitting device and an extruder in a traditional plastic sheet production processing device, the side band obtained by slitting of the plastic sheet production processing device is conveyed on line and cut off by a side band conveying and cutting device, the cut side band is conveyed into a crusher by a conveying belt conveying device in the prior art, the crusher is used for crushing the cut side band, and then the crushed material is fed into a feed inlet of the extruder through a material guide pipe by a material lifting device, so that the continuous conveying, cutting, crushing and recycling of the side band produced and processed by the plastic sheet are realized, the synchronization of the recycling of the side band and the plastic sheet production processing can be ensured, and the production line water flowing property is improved; the cutting side band recycling mechanism for plastic sheet production is synchronous with plastic sheet production and processing, and the produced side bands do not need to be accumulated and intensively cut, so that the side bands are recycled without falling to the ground, the side bands are greatly prevented from being polluted by dust, and the cleanness of the product is ensured.
The side belt conveying and cutting device can cut the side belt into strips and cut the side belt into a plurality of sections of small sub-side belts in advance while ensuring timely and continuous conveying of the side belt generated by the production line, on one hand, the side belt in the production line is prevented from being directly and continuously fed into a crusher, and the phenomenon that the production is blocked due to the fact that the crusher twists the side belt is prevented. On the other hand, the crushing load of the subsequent crusher is reduced. According to the invention, the two ends of the fixed shaft are respectively provided with the open grooves, the limited clamping blocks are connected in the open grooves through the springs, and the clamping blocks are exposed out of the open grooves. The slitting knife is two pieces and symmetrically positioned at two sides of the frame. The through hole has all been seted up on each slitting knife, and the slitting knife inserts to the fixed axle through the through hole, and the tip of injecing the grip block offsets with the inner wall of through hole's structure, has realized the fastening of slitting knife or the fast switch-over of rotating-state, and fastening is effectual. In addition, the cross section of the sliding chute is arc-shaped, and the cross section of the bottom of the slitting knife is arc-shaped matched with the cross section of the sliding chute, so that the contact area and the contact degree of the slitting knife and the sliding chute are increased, further, the position stability of the slitting knife after being fastened is realized, and the requirement of rotation is met.
Preferably, the cutting edge band recycling mechanism for plastic sheet production further comprises a cyclone dust removal device, and the cyclone dust removal device is communicated between the crusher and the extruder through the material guide pipe; the bottom of the cyclone dust removal device is opposite to the feeding hole of the extruder or is communicated with the feeding hole of the extruder through a material return pipe.
Preferably, a valve is arranged on the material guide pipe; the material lifting device comprises one of a blower and a material lifting pump; and a material return valve is arranged on the material return pipe.
Preferably, the guide tube includes a guide tube body section, a metallic flexible tube section; the guide pipe body sections and the metal hose sections are alternately communicated.
Preferably, the cutting device comprises a cutting knife, a lifting rod, an incomplete gear, a connecting shaft and a first motor;
the two lifting rods are positioned behind the traction pair rollers and symmetrically positioned on two sides of the rack; the lifting rod is of a frame structure, saw-tooth structures are arranged on two inner side surfaces in the height direction of the lifting rod, and the incomplete gear can be alternately meshed with the saw teeth on the two inner side surfaces; the connecting shaft is connected between the two incomplete gears; the cutting knife is connected between the two lifting rods; the output shaft end of the first motor is connected with one incomplete gear.
Preferably, the blanking device further comprises a blanking plate and a blanking cylinder, wherein the blanking plate is hinged with the tail end of the rack; the fixed end of the blanking cylinder is hinged on the rack, and the piston rod end of the blanking cylinder is hinged at the bottom of the blanking plate; and the piston rod end of the blanking cylinder retracts to drive the blanking plate to rotate downwards.
Preferably, the device also comprises support rods, the two support rods are symmetrically hinged at the front end of the rack, and the first guide roller is rotatably arranged between the two support rods; the front end of the rack is also provided with a magnetic sensor, the support rod is provided with a magnetic block, and the support rod rotates downwards to enable the magnetic block to be close to the magnetic sensor.
Preferably, the rack is further fixed with a mounting plate through a bolt, the mounting plate is provided with a mounting hole, a rubber ring is sleeved in the mounting hole, and the magnetic sensor is inserted into the rubber ring.
Preferably, the pulling counter roll comprises a first roll, a second roll, the first roll being located above the second roll; the first roller and the second roller are both rotationally connected with the rack through bearings; a first gear is sleeved at both ends of the first roller, and a second gear is sleeved at both ends of the second roller; the first gear and the second gear on the same side are meshed.
Preferably, the device further comprises a traction motor, and the output shaft end of the traction motor is connected with one end part of the first roller
The invention has the advantages that:
(1) the invention discloses a plastic sheet production used cutting side band recycling mechanism which is arranged between a traditional plastic sheet production processing device and an extruder, wherein the side band production used cutting side band recycling mechanism is a longitudinal strip cutting device, the side band obtained by strip cutting of the plastic sheet production processing device is conveyed on line and cut off through a side band conveying and cutting device, the cut side band is conveyed into a crusher through a conveying belt conveying device in the prior art, the crusher is used for crushing the cut side band, and then the crushed material is fed into a feed inlet of the extruder through a material guide pipe through a material lifting device, so that the continuous conveying, cutting, crushing and recycling of the side band of the plastic sheet production processing are realized, the synchronization of the side band recycling and the plastic sheet production processing can be ensured, and the production line water flowing property is improved.
(2) The cutting side band recycling mechanism for plastic sheet production is synchronous with plastic sheet production and processing, and the produced side bands do not need to be accumulated and intensively cut, so that the side bands are recycled without falling to the ground, the side bands are greatly prevented from being polluted by dust, and the cleanness of the product is ensured.
(3) The side belt conveying and cutting device can cut the side belt into strips and cut the side belt into a plurality of sections of small sub-side belts in advance while ensuring timely and continuous conveying of the side belt generated by the production line, on one hand, the side belt in the production line is prevented from being directly and continuously fed into a crusher, and the phenomenon that the production is blocked due to the fact that the crusher twists the side belt is prevented. On the other hand, the crushing load of the subsequent crusher is reduced.
(4) According to the invention, the two ends of the fixed shaft are respectively provided with the open grooves, the limited clamping blocks are connected in the open grooves through the springs, and the clamping blocks are exposed out of the open grooves. The slitting knife is two pieces and symmetrically positioned at two sides of the frame. The through hole has all been seted up on each slitting knife, and the slitting knife inserts to the fixed axle through the through hole, and the tip of injecing the grip block offsets with the inner wall of through hole's structure, has realized the fastening of slitting knife or the fast switch-over of rotating-state, and fastening is effectual.
(5) Because the cross-section of spout is circular-arc, the cross-section of slitting knife's bottom is the circular-arc with the cross-section looks adaptation of spout, has increaseed slitting knife and the area of contact and the degree of contact of spout, and further, has realized the stability of slitting knife fastening back position, and satisfies the needs that can rotate.
Drawings
Fig. 1 is a schematic structural diagram of a cutting edge belt recycling mechanism for plastic sheet production in the embodiment of the invention.
Fig. 2 is a schematic structural view of a sideband transmission cutting device according to an embodiment of the present invention.
Fig. 3 is a partially enlarged view of fig. 2 according to the present invention.
Fig. 4 is a schematic structural diagram of the bottom of the slitting knife in a state of being matched with the sliding chute in the embodiment of the invention.
Fig. 5 is a partially enlarged view of fig. 4 according to the present invention.
Fig. 6 is a schematic structural diagram of a slitting knife in a clamping state according to an embodiment of the invention.
Fig. 7 is a schematic structural view of the webbing transport cutoff device in the normal operation state according to the embodiment of the present invention.
Fig. 8 is a schematic structural diagram of the webbing in a loose state according to the embodiment of the present invention.
FIG. 9 is a schematic structural diagram of the magnetic block of the embodiment of the present invention in a state away from the magnetic sensor.
Fig. 10 is a schematic structural view of a sideband transmission cutting device in a blanking state according to an embodiment of the present invention.
Fig. 11 is a schematic structural diagram of a cutting edge belt recycling mechanism for plastic sheet production based on a cyclone dust removal device in the embodiment of the invention.
Fig. 12 is a schematic view showing the structure of a guide tube according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
It is noted that, in this document, relational terms such as first and second, and the like, if any, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Example 1
As shown in fig. 1, the embodiment discloses a recycling mechanism for cutting edge bands for plastic sheet production, which comprises an edge band conveying and cutting device 2, a conveying belt conveying device 3 and a crusher 4 in sequence from front to back according to a process flow. The crusher 4 is communicated with the extruder 1 through a material guide pipe 5.
The edge tape cut from the plastic sheet production line is cut by the edge tape conveying and cutting device 2, and the cut edge tape is conveyed to the crusher 4 by the conveyor belt conveying device 3. The crusher 4 is configured to crush the cut edge band. The crushed material is fed into a feed inlet of the extruder 1 through a material lifting device 6 and a material guide pipe 5.
As shown in fig. 2 and 3, the sideband conveying and cutting device comprises a frame 21, a first guide roller 22, a second guide roller 23, a slitting knife 24, a fixed shaft 251, a spring 252, a traction pair roller 26 and a cutting device;
the first guide roller 22 and the second guide roller 23 are rotatably arranged at the front end of the frame 21 from front to back at intervals through bearings; the traction double-roller 26 is rotatably arranged at the rear end of the frame 21 through a bearing; the fixed shaft 251 is fixed on the frame 21 and positioned between the second guide roller 23 and the traction pair roller 26;
the cutting device comprises a cutting knife 271, a lifting rod 272, an incomplete gear 273, a connecting shaft 274 and a first motor 275;
the lifting rods 272 are positioned behind the traction pair rollers 26, are two in number and are symmetrically positioned on two sides of the frame 21; the lifting rod 272 is of a frame structure, two inner side surfaces in the height direction of the lifting rod are provided with sawtooth structures, and the incomplete gear 273 can be alternately meshed with the sawteeth on the two inner side surfaces; the connecting shaft 274 is connected between the two partial gears 273; the top of the cutting knife 271 is welded between the two lifting rods 272, and the knife edge of the cutting knife 271 faces downwards; the output shaft end of the first motor 275 is connected to one of the partial gears 273.
A guide rod 279 is further included, and the lift lever 272 is slidably engaged with the guide rod 279 in a vertical direction.
The pulling counter roll 26 comprises a first roll 261, a second roll 262, the first roll 261 being positioned above the second roll 262; the first roller 261 and the second roller 262 are rotatably connected with the frame 21 through bearings; a first gear 263 is sleeved at both ends of the first roller 261, and a second gear 264 is sleeved at both ends of the second roller 262; the first gear 263 and the second gear 264 on the same side are engaged. The output shaft end of the traction motor is connected to one end of the first roller 261.
As shown in fig. 4-6, an open slot 2511 is formed on the outer circumferential surface of the fixed shaft 251, and the length direction of the open slot 2511 is consistent with the axial direction of the fixed shaft 251; the number of the open grooves 2511 is two, and the two open grooves are arranged in mirror symmetry. One end of the limiting clamping block 253 extends into the open slot 2511 to be connected with one end of the spring 252, the other end of the spring 252 is connected with the inner wall of the open slot 2511, and the other end of the limiting clamping block 253 is exposed out of the open slot 2511. The slitting knives 24 are two pieces, symmetrically positioned at both sides of the frame 21 and installed in the fixed shaft 251. Specifically, each slitting knife 24 is provided with a through hole 241, the slitting knife 24 is inserted into the fixing shaft 251 through the through hole 241, and the end portion of the clamping block 253, which is exposed out of one end of the open groove 2511, is pressed against the inner wall of the through hole 241, so that the slitting knife 24 is installed in the fixing shaft 251.
The frame 21 is further provided with a sliding chute 215, the cross section of the sliding chute 215 is arc-shaped, the cross section of the bottom of the slitting knife 24 is arc-shaped which is matched with the cross section of the sliding chute 215, and the edge of the slitting knife 24 faces upwards to slit the edge belt conveyed from the second guide roller 23.
A valve 7 is arranged on the material guide pipe 5, and the material lifting device 6 comprises a blower, a material lifting pump, a feeding fan or other pneumatic output devices in the prior art.
The present invention deforms the spring 252 by pressing the limiting clamping blocks 253 on both sides of the fixing shaft 251 at the same time such that the limiting clamping blocks 253 are completely received in the corresponding open grooves. Each slitting knife 24 is in a loose state, then the slitting knife 24 is rotated until the knife edge of the slitting knife 24 is positioned at a position (height) meeting slitting requirements, then the limiting clamping blocks 253 on the two sides of the fixed shaft 251 are loosened, each limiting clamping block 253 is tightly pressed against the slitting knife 24 again under the action of the reset of the spring 252, and the two limiting clamping blocks 253 clamp and fasten the slitting knife 24 simultaneously.
The plastic sheet passes through the slitting knives 24 after being guided by the first guide roller 22 and the second guide roller 23 in sequence from the end part of the side band which is trimmed on the trimming mechanism on the plastic sheet production processing device, the side band is divided into three sub-side bands, the three sub-side bands are fed between the first roller 261 and the second roller 262 at the same time, the traction double rollers 26 (the first roller 261 and the second roller 262) are started, the side bands are continuously conveyed under the action of the traction force of the traction double rollers 26, when the three sub-side bands are conveyed to the tail end of the rack 21, the three sub-side bands exposing the rack 21 part sag, at the moment, the cutting knife 271 presses down to cut off the three sub-side bands, and the three sub-side bands fall off. When the next three sub-side bands droop to the same length, the cutting knife 271 presses down again for cutting, and therefore the strip splitting and intermittent cutting of the side bands are completed. The three cut-off sub-side belts are conveyed to a feeding hole of the crusher 4 under the conveying action of the conveying belt conveying device 3, and after the crusher 4 is crushed, crushed materials are obtained and cached in a crushing bin of the crusher 4. When the crushed material needs to be recycled for the second time, the crushed material is extracted into the extruder 1 through the material guide pipe 5 by opening the valve 7 on the material guide pipe 5 and starting the material lifting device 6, and the secondary extrusion processing is performed.
The cutting side band recycling mechanism for plastic sheet production is arranged between a longitudinal slitting device and an extruder 1, the side band obtained by slitting of a plastic sheet production and processing device is conveyed and cut off on line through a side band conveying and cutting device 2, the cut side band is conveyed into a crusher 4 through a conveying belt conveying device 3 in the prior art, the crusher 4 is used for crushing the cut side band, and the crushed material is fed into a feed inlet of the extruder 1 through a material guide pipe 5 through a material lifting device 6, so that the continuous conveying, cutting, crushing and recycling of the side band of the plastic sheet production and processing are realized, the synchronization of the recycling of the side band and the plastic sheet production and processing can be ensured, and the production line water flowing property is improved; the cutting side band recycling mechanism for plastic sheet production is synchronous with plastic sheet production and processing, and the produced side bands do not need to be accumulated and intensively cut, so that the side bands are recycled without falling to the ground, the side bands are greatly prevented from being polluted by dust, and the cleanness of the product is ensured.
It should be noted that the person skilled in the art should be within the scope of the present invention to adjust the rotation speed of the first guide roller 22 and the second guide roller 23 to ensure that the feeding rate of the webbing from the production line is consistent with the feeding rate of the webbing feeding and cutting device 2 according to the present invention.
In this embodiment, the first motor 275 rotates to drive one of the incomplete gears 273 to rotate, and the connecting shaft 274 drives the other incomplete gear 273 to rotate, so that the two incomplete gears 273 can be alternately engaged with the saw teeth on the inner side surfaces of the two lifting rods 272. The reciprocating lifting of the lifting rod 272 is realized, and when the lifting rod 272 moves to the lowest position, the knife edge of the cutting knife 271 connected with the lifting rod is pressed downwards to cut off the three sub-side belts. The two partial gears 273 and the lift lever 272 in this embodiment are identical.
The crusher 4 and the conveyer belt conveying device 3 of the invention are both in the prior art.
The side belt conveying and cutting device 2 can pre-cut the side belt into strips and cut the side belt into a plurality of sections of small sub-side belts while ensuring timely and continuous conveying of the side belt generated by the production line, on one hand, the side belt in the production line is prevented from being directly and continuously fed into the crusher 4, and the phenomenon that the production is blocked due to the fact that the crusher 4 twists the side belt is prevented. On the other hand, the crushing load of the subsequent crusher 4 is reduced. Open grooves are formed in two ends of the fixed shaft 251, limited clamping blocks 253 are connected to the open grooves through springs 252, and the clamping blocks are exposed out of the open grooves. The slitting knives 24 are two pieces and symmetrically positioned at two sides of the frame 21. Each slitting knife 24 is provided with a through hole, the slitting knives 24 are inserted into the fixing shaft 251 through the through holes, the end parts of the clamping blocks 253 are limited to be abutted against the inner wall of the through holes, the fastening or rotating state quick switching of the slitting knives 24 is realized, and the fastening effect is good. In addition, the cross section of the sliding chute is arc-shaped, and the cross section of the bottom of the slitting knife 24 is arc-shaped matched with the cross section of the sliding chute, so that the contact area and the contact degree of the slitting knife 24 and the sliding chute are increased, further, the position stability of the slitting knife 24 after being fastened is realized, and the requirement of rotation is met. Compared with the cutting device provided by the invention, the cylinders are respectively arranged at the two ends of the cutting knife 271, the cutting knife 271 is connected between the piston rod ends of the two cylinders, and the intermittent pressing motion of the piston rod end of the cylinder drives the cutting knife 271 to cut off, so that the cutting device has less power sources and is convenient to operate and control. Of course, the cutting device may be replaced by a pneumatic cylinder with a cutting blade 271.
Preferably, a rubber strip is provided between the elevation rod 272 and the guide rod 279, and the rubber strip may be adhered to the surface of the guide rod 279 to increase sliding friction between the elevation rod 272 and the guide rod 279.
Example 2
As shown in fig. 7 to 9, the present embodiment is different from the above embodiments in that: the device also comprises two support rods 291, the two support rods 291 are symmetrically hinged at the front end of the frame 21, and the first guide roller 22 is rotatably installed between the two support rods 291.
A magnetic sensor 292 is further disposed at the front end of the frame 21, a magnetic block 294 is mounted on the supporting rod 291, and the supporting rod 291 rotates downwards to enable the magnetic block 294 to approach the magnetic sensor 292.
A mounting plate 293 is further fixed to the frame 21 through a bolt, a mounting hole is formed in the mounting plate 293, a rubber ring is sleeved in the mounting hole, and the magnetic sensor 292 is inserted into the rubber ring.
The webbing is transported from the bottom of the first guide roller 22 to the second guide roller 23, which supports the first guide roller 22 in suspension, as the webbing is tensioned at the section transported to the pulling counter roller 26. If the speed of the production line on the conveying side belt is increased and the speed of the traction pair rollers 26 is not consistent, the supporting rods 291 float downwards, the side belt is loosened, the supporting effect on the supporting rods 291 is reduced, the two supporting rods 291 are symmetrically hinged to the front end of the rack 21, the supporting rods 291 rotate downwards, when the supporting rods 291 rotate downwards, the magnetic blocks 294 are close to the magnetic sensor 292, the magnetic sensor 292 sends a signal to drive the traction motor to increase the speed, and the conveying speed of the side belt from the production line is guaranteed to be consistent with the speed of the side belt conveying and cutting device 2. When the speed of the production line on the conveying side belt returns to normal, the side belt can be tensioned to the initial position again because the rotating speed of the traction motor is higher at the moment, the supporting rod 291 rotates upwards to enable the magnetic block 294 to be far away from the magnetic sensor 292, and the traction motor returns to the initial speed. Thereby ensuring the continuity and stability of the sideband transmission.
The magnetic sensor 292 and the traction motor of the present embodiment are both in the prior art. Specifically, the magnetic sensor 292 may transmit a signal to a frequency converter or a transmission of the prior art or a PLC nc center of the production line, and the frequency converter or the transmission or the PLC nc center of the production line drives a traction motor such as a servo motor or other variable speed motor of the prior art to change the rotation speed.
Example 3
As shown in fig. 10, the present embodiment is different from the above-described embodiments in that: the blanking device also comprises a blanking plate 281 and a blanking cylinder 282, wherein the blanking plate 281 is hinged with the tail end of the frame 21. The fixed end of the blanking cylinder 282 is hinged on the frame 21, and the piston rod end of the blanking cylinder 282 is hinged at the bottom of the blanking plate 281. The piston rod end of the blanking cylinder 282 retracts to drive the blanking plate 281 to rotate downwards.
The piston rod end of the blanking cylinder 282 retracts to drive the blanking plate 281 to rotate downward, and the sub-tape cut by the cutting knife 271 is guided to the next process. The piston rod end of the blanking cylinder 282 extends and retracts to drive the blanking plate 281 to rotate upwards to be flush with the workbench of the frame 21.
Example 4
As shown in fig. 11, the present embodiment is different from the above-described embodiments in that: the cutting edge belt recycling mechanism for plastic sheet production further comprises a cyclone dust removal device 8, and the cyclone dust removal device 8 is communicated between the crusher 4 and the extruder 1 through a material guide pipe 5; the bottom of the cyclone dust removal device 8 is opposite to the feed inlet of the extruder 1 or is communicated with the feed inlet of the extruder 1 through a feed back pipe 91. A return valve 92 is installed in the return pipe 91.
The cyclone dust removing apparatus 8 of the present invention is prior art.
The crushed materials are conveyed to the upper end or the top of the cyclone dust removal device 8 through the material guide pipe 5, the crushed materials are settled to the bottom of the cyclone dust removal device 8 under the action of the cyclone dust removal device 8, and the gas is discharged from a gas outlet at the upper end or the top of the cyclone dust removal device 8. And (3) opening a material return valve 92, so that the crushed materials at the bottom of the cyclone dust collector 8 can freely fall into a feed inlet of the lower extruder 1 through a material return pipe 91.
Through the setting of cyclone dust collector 8, can carry out further cleaning treatment to the material after the feeding to the broken of extruder 1, blow away tiny suspended solid wherein through the gas.
Example 5
As shown in fig. 12, the present embodiment is different from the above-described embodiments in that: the guide tube 5 includes a guide tube body section 51, a metallic flexible tube section 52; the multiple sections of the guide pipe main body sections 51 and the multiple sections of the metal hose sections 52 are alternately communicated.
The present embodiment is constructed by including a guide tube body section 51, a metallic flexible tube section 52; the multiple sections of the guide pipe main body sections 51 and the multiple sections of the metal hose sections 52 are alternately communicated. The buffering and denoising effects of the metal hose are utilized to ensure the stability of the crushed material conveying.
It is noted that, in this document, relational terms such as first and second, and the like, if any, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A cutting edge belt recycling mechanism for plastic sheet production is characterized by comprising an edge belt conveying and cutting device, a conveying belt and a crusher in sequence from front to back according to a process flow; the crusher is communicated with the extruder through a material guide pipe;
the side belt cut from the plastic sheet production line is cut off by the side belt conveying and cutting device, and the cut side belt is conveyed to the crusher by the conveying belt; the crusher is used for crushing the cut sideband; feeding the crushed material into a feed inlet of an extruder through a material lifting device and a material guide pipe;
the side belt conveying and cutting device comprises a rack, a first guide roller, a second guide roller, a slitting knife, a fixed shaft, a spring, a traction pair roller and a cutting device;
the first guide roller and the second guide roller are rotatably arranged at the front end of the rack at intervals; the traction pair rollers are rotatably arranged at the rear end of the rack; the fixed shaft is fixed on the rack and is positioned between the second guide roller and the traction pair roller; open grooves are formed in two ends of the fixed shaft, limited clamping blocks are connected to the open grooves through springs, and the limited clamping blocks are exposed out of the open grooves;
the two slitting knives are symmetrically positioned on two sides of the rack; each strip cutter is provided with a through hole, the strip cutter is inserted into the fixed shaft through the through hole, and the end part of the limiting clamping block is abutted against the inner wall of the through hole; the rack is also provided with a sliding chute, the section of the sliding chute is in an arc shape, the section of the bottom of the slitting knife is in an arc shape matched with the section of the sliding chute, and the knife edge of the slitting knife faces upwards and is used for slitting the side belt conveyed from the second guide roller; the cutting knife in the cutting device is used for cutting the edge band conveyed from the traction roller pair.
2. The recycling mechanism for cutting side bands for plastic sheet production according to claim 1, further comprising a cyclone dust collector, wherein the cyclone dust collector is communicated between the crusher and the extruder through the material guide pipe; the bottom of the cyclone dust removal device is opposite to the feeding hole of the extruder or is communicated with the feeding hole of the extruder through a material return pipe.
3. The recycling mechanism for cutting edge band in plastic sheet production according to claim 2, characterized in that a valve is arranged on the material guiding pipe; the material lifting device comprises one of a blower and a material lifting pump; and a material return valve is arranged on the material return pipe.
4. The recycling mechanism of cutting edge band for plastic sheet production as claimed in claim 1, further comprising two support rods symmetrically hinged to the front end of the frame, the first guide roller being rotatably mounted between the two support rods; the front end of the rack is also provided with a magnetic sensor, the support rod is provided with a magnetic block, and the support rod rotates downwards to enable the magnetic block to be close to the magnetic sensor.
5. The mechanism of claim 4, wherein the frame is further fixed with a mounting plate by bolts, the mounting plate is provided with mounting holes, the mounting holes are sleeved with rubber rings, and the magnetic sensors are inserted into the rubber rings.
6. The recycling mechanism for cutting edge band in plastic sheet production as claimed in claim 1, wherein the guide tube comprises a guide tube body section, a metal hose section; the guide pipe body sections and the metal hose sections are alternately communicated.
7. The recycling mechanism of cutting edge band for plastic sheet production according to claim 1, characterized in that the cutting device comprises a cutting knife, a lifting rod, an incomplete gear, a connecting shaft, a first motor; the two lifting rods are positioned behind the traction pair rollers and symmetrically positioned on two sides of the rack; the lifting rod is of a frame structure, saw-tooth structures are arranged on two inner side surfaces in the height direction of the lifting rod, and the incomplete gear can be alternately meshed with the saw teeth on the two inner side surfaces; the connecting shaft is connected between the two incomplete gears; the cutting knife is connected between the two lifting rods; the output shaft end of the first motor is connected with one incomplete gear.
8. The cutting edge band recycling mechanism for plastic sheet production according to claim 1, further comprising a blanking plate and a blanking cylinder, wherein the blanking plate is hinged to the tail end of the frame; the fixed end of the blanking cylinder is hinged on the rack, and the piston rod end of the blanking cylinder is hinged at the bottom of the blanking plate; and the piston rod end of the blanking cylinder retracts to drive the blanking plate to rotate downwards.
9. The recycling mechanism for cutting side band for plastic sheet production according to claim 1, wherein the pulling pair roller comprises a first roller and a second roller, the first roller is positioned above the second roller; the first roller and the second roller are both rotationally connected with the rack through bearings; a first gear is sleeved at both ends of the first roller, and a second gear is sleeved at both ends of the second roller; the first gear and the second gear on the same side are meshed.
10. The recycling mechanism of cutting edge band for plastic sheet production according to claim 9, characterized in that it further comprises a traction motor, the output shaft end of said traction motor is connected with one end of said first roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010507821.XA CN111673947A (en) | 2020-06-05 | 2020-06-05 | Cutting side band recycling mechanism for plastic sheet production |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010507821.XA CN111673947A (en) | 2020-06-05 | 2020-06-05 | Cutting side band recycling mechanism for plastic sheet production |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113910316A (en) * | 2021-11-09 | 2022-01-11 | 常州百利菲特防水设备有限公司 | Device is tailor with distance to modified asphalt waterproofing membrane production |
| CN114193663A (en) * | 2021-12-22 | 2022-03-18 | 山东国宁包装股份有限公司 | Plastic preservative film slitting waste recycling equipment |
| CN115157604A (en) * | 2022-06-13 | 2022-10-11 | 法狮龙家居建材股份有限公司 | Production line and production method of solid wood-plastic plate |
| CN113910316B (en) * | 2021-11-09 | 2024-04-26 | 常州百利菲特防水设备有限公司 | Device is tailor with distance to modified asphalt waterproofing membrane production |
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2020
- 2020-06-05 CN CN202010507821.XA patent/CN111673947A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113910316A (en) * | 2021-11-09 | 2022-01-11 | 常州百利菲特防水设备有限公司 | Device is tailor with distance to modified asphalt waterproofing membrane production |
| CN113910316B (en) * | 2021-11-09 | 2024-04-26 | 常州百利菲特防水设备有限公司 | Device is tailor with distance to modified asphalt waterproofing membrane production |
| CN114193663A (en) * | 2021-12-22 | 2022-03-18 | 山东国宁包装股份有限公司 | Plastic preservative film slitting waste recycling equipment |
| CN114193663B (en) * | 2021-12-22 | 2024-02-27 | 山东国宁包装股份有限公司 | Plastic wrap cuts waste material recycling equipment |
| CN115157604A (en) * | 2022-06-13 | 2022-10-11 | 法狮龙家居建材股份有限公司 | Production line and production method of solid wood-plastic plate |
| CN115157604B (en) * | 2022-06-13 | 2023-07-25 | 法狮龙家居建材股份有限公司 | Solid wood-plastic board production line and production method |
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