CN204622144U - Plastic granulator and its traction wheel anti-winding strip structure - Google Patents

Abstract

The utility model discloses a plastic granulator and a traction wheel anti-winding strip structure thereof, which comprises a frame, wherein a working platform is arranged on the frame, a left support and a right support are arranged on the working platform, a strip guiding device, a traction device and a grain cutting device which are sequentially arranged according to the conveying direction of strips are arranged in a holding space between the two supports, and a scraper device, a pinch roller device and a protective cover device are also arranged above the traction device and the grain cutting device; wherein, this draw gear has the traction wheel, and scraper device has the scraper and connects in the scraper frame at scraper both ends, and two scraper framves are the card respectively in the both ends of aforementioned traction wheel, are provided with positioning groove respectively in the both ends of this traction wheel, and aforementioned two scraper frame lower parts are the card respectively and are imbedded in this positioning groove. It is different from the traditional structural style of directly cutting ferrule on the annular knurl, and the smooth positioning groove surface is inseparabler with the fit clearance between the scraper frame to can prevent effectively that the thin material strip from stuffing into between scraper frame and the traction wheel.

Description

Plastic granulator and its traction wheel anti-winding strip structure

technical field

The utility model relates to the technology in the field of plastic granulation processing equipment, in particular to a plastic granulator and its traction wheel anti-winding strip structure.

Background technique

Plastic granulator is a commonly used plastic raw material processing equipment, which is used to cut the strip or sheet plastic produced by the extruder into granules, so as to facilitate the packaging, transportation and storage of plastic raw materials, and to facilitate the application Injection molding needs on subsequent injection molding machines, etc., are especially widely used for cutting various thermoplastics.

The plastic granulator mainly includes a frame and a drive motor, hob, fixed knife, traction wheel, pressure wheel and scraper, etc., which are arranged on the frame. The drive motor drives the hob and traction wheel to rotate, and the fixed knife is located on the hob. At the front and lower part of the machine, the traction wheel and the pressure wheel cooperate to transport the material strip between the hob and the fixed knife, and use the high-speed rotation of the hob to quickly cut the material strip into particles and send it out from the hopper below.

However, although various plastic cutting machine products on the market can provide users with the basic effect of plastic granulation, in actual use, it is found that their own structure and performance cannot achieve the best use effect. and work efficiency, there are still many deficiencies, which are summarized as follows: 1) both ends of the traction wheel are easily entangled with fine material strips, resulting in failure and shutdown; 2) during the conveying process, the material strips are often concentrated On one side, the pressure wheel is easy to wear in the local area where the material strips are concentrated, which affects the working performance and service life of the pressure wheel; 3) During the cutting process of the roller, the material particles often splash and accumulate in the front material strip guide groove, It hinders the smoothness of the continuous conveying of the strips, and seriously causes the machine to malfunction.

Utility model content

The utility model aims at the deficiencies in the prior art, and its main purpose is to provide a plastic granulator and its traction wheel anti-winding material strip structure, so as to solve the problem of the material winding strip of the existing plastic granulator.

Another purpose of the utility model is to provide a plastic granulator, which solves the problem that the material strips are concentrated and the pressure wheel is partially worn.

Another purpose of the utility model is to provide a plastic granulator to solve the problem of accumulation of material particles in the guide groove of the material strip.

In order to achieve the above object, the utility model adopts the following technical solutions:

A plastic granulator, comprising a frame, a working platform is arranged on the frame, and two left and right supports are arranged on the working platform, and in the accommodating space between the two supports, a The strip guide device, traction device and granulation device arranged in sequence are also equipped with a scraper device, a pressure wheel device and a protective cover device above the traction device and the granulation device; wherein, the traction device has a traction wheel, and the scraper device has The scraper and the scraper holders connected to both ends of the scraper, the two scraper holders are respectively clipped on the two ends of the aforementioned traction wheel, and the two ends of the traction wheel are respectively provided with positioning grooves, and the lower parts of the aforementioned two scraper holders are respectively inserted into the positioning grooves middle.

As a preferred solution, a small clearance fit is maintained between the inner side of the scraper holder and the inner side wall of the positioning groove.

As a preferred solution, the traction wheel is a patterned roller traction wheel, and the knurling on the surface of the patterned roller traction wheel is arranged in the middle of the patterned roller.

As a preferred solution, the strip guiding device includes a bottom plate and two side plates, a strip guide groove is enclosed by the bottom plate and the two side plates, and a roller is installed at the entrance of the strip guide groove. A plurality of spacers are arranged on the top, and a material strip grouping groove is formed between two adjacent spacers. The width of the material strip grouping groove is greater than or equal to the sum of the widths of two or more material strips arranged side by side.

As a preferred solution, the strip guide device includes a bottom plate and two side plates, a strip guide groove is enclosed by the bottom plate and the two side plates, and the bottom plate is also provided with a plurality of strips at the tail of the strip guide groove. Leakage groove, the leakage groove extends perpendicular to the conveying direction of the material strip, and the leakage groove penetrates the bottom plate up and down.

As a preferred solution, the leaking chute is arranged obliquely up and down.

As a preferred solution, a baffle plate is arranged above the tail of the strip guide groove, the left and right ends of the baffle plate are respectively connected to the two side plates, and the baffle plate is arranged inclined backward and downward.

A traction wheel anti-winding material strip structure of a plastic pelletizer, including a traction device and a scraper device, the traction device has a traction wheel, the scraper device has a scraper and a scraper frame connected to both ends of the scraper, and the two scraper frames are respectively clamped on the The two ends of the traction wheel are respectively provided with positioning grooves at the two ends of the traction wheel, and the lower parts of the two scraper holders are inserted into the positioning grooves respectively.

As a preferred solution, a small clearance fit is maintained between the inner side of the scraper holder and the inner side wall of the positioning groove.

As a preferred solution, the traction wheel is a patterned roller traction wheel, and the knurling on the surface of the patterned roller traction wheel is arranged in the middle of the patterned roller.

Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be known from the above technical solutions:

1. It is provided with positioning grooves at both ends of the traction wheel, and the scraper holders are respectively inserted into the positioning grooves, which is different from the traditional structure that is directly clamped on the knurling, and the smooth positioning grooves The fit gap between the surface and the scraper frame is tighter, which can effectively prevent the fine material strips from being inserted between the scraper frame and the traction wheel, fundamentally avoiding the winding of the fine material strips on the traction wheel, thus solving the problem of traction wheel winding Card machine problem.

2. It is different from the traditional thin and narrow channel structure that only accommodates a single material strip by setting a larger width material strip grouping groove on the roller. The utility model transports the material strips in groups, so that each group of material strips During the conveying process, it will not affect the conveying of another group of material strips, and the material strips will not gather to one side to cause severe wear of the pressure roller on the gathering side, nor will they gather on one side and wind up on the traction wheel. The strips are evenly distributed, so that the pressure wheel will not be partially worn, so as to obtain a better service life and more stable and reliable working performance.

3. By setting the material strip leakage groove at the end of the material strip guide groove, the debris splashed into the place can be automatically leaked out by using the material leakage groove, thereby effectively preventing the accumulation of debris in the material strip guide groove and ensuring The material strip is conveyed smoothly, which can further prevent the phenomenon that the traction wheel wraps around the material strip.

4. By setting a baffle plate above the tail of the material strip guide groove, the baffle plate can prevent the debris from splashing into the material strip guide groove, thereby further preventing the accumulation of debris in the material strip guide groove. Further prevented the problem that the traction wheel winds the material strip.

In order to more clearly illustrate the structural features, technical means and the specific purpose and functions achieved by the utility model, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments:

Description of drawings

FIG. 1 is a schematic perspective view of an assembly of an embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view of an assembly of an embodiment of the present invention.

Fig. 3 is a three-dimensional exploded schematic diagram of an embodiment of the present invention.

Fig. 4 is a three-dimensional exploded schematic view of the scraper device and the traction device in the embodiment of the present invention.

Fig. 5 is a three-dimensional assembly diagram of the scraper device and the traction device in the embodiment of the present invention.

Fig. 6 is a schematic cross-sectional view of the assembly of the scraper device and the traction device in the embodiment of the present invention.

Fig. 7 is a bottom perspective schematic diagram of the pressure roller device in the embodiment of the present invention.

Fig. 8 is a bottom perspective schematic diagram of the protective cover device in the embodiment of the present invention.

Fig. 9 is a three-dimensional enlarged schematic view of the strip guide device in the embodiment of the present invention.

Explanation of the accompanying drawings:

10. Rack, 11. Working platform, 12. Support, 13. Accommodating space, 14. Front door panel, 15. Keyhole, 16. Scraper block;

20. Mounting seat, 21. Fitting part, 22. Limiting block;

30. Guide device, 31. Bottom plate, 32. Side plate, 33. Material strip guide groove, 34. Roller, 35. Spacer, 36. Material strip grouping groove, 37. Leakage groove, 38, Baffle plate;

40, traction device, 41, traction wheel, 42, bearing, 43, driven wheel, 44, knurling, 45, positioning groove;

50, pelletizing device, 51, fixed knife, 52, hob, 53, fixed knife rest, 54, driving motor, 55, driving wheel;

60, scraper device, 61, scraper, 62, scraper holder;

70, pressure wheel device, 71, pressure wheel frame, 72, pressure wheel, 73, pressure column, 74, cooling air duct;

80, protective cover device, 81, cover plate, 82, locking mechanism, 821, telescopic rod, 83, cylinder, 84, ejector rod, 85, pressure rod, 86, material blocking plate, 87, give way groove, 88, Shaft.

Detailed ways

Please refer to shown in Fig. 1 to Fig. 9, it has shown the concrete structure of the preferred embodiment of the present utility model, a kind of plastic granulator, comprises frame 10, is provided with work platform 11 on the frame 10, works Two left and right supports 12 are arranged on the platform, and a material strip guide device 30, a traction device 40 and a granulation device arranged in sequence according to the conveying direction of the plastic material strip are installed in the accommodation space 13 between the two supports 12. 50, and, also equipped with scraper device 60, pinch wheel device 70 and protective cover device 80 above traction device 40 and pelletizing device 50.

Wherein, as shown in FIG. 9 , the material strip guiding device 30 is installed on the front door panel 14 of the aforesaid accommodation space, and one side of the front door panel 14 is rotatably pivoted on the aforementioned abutment 12, so that the front door panel 14 can form a Flip closure. The strip guiding device 30 moves with the turning of the front door panel. The strip guiding device 30 includes a bottom plate 31 and two side plates 32, and a strip guide groove 33 is enclosed by the bottom plate 31 and the two side plates 32. A roller 34 is installed at the entrance of the bar guide groove 33, and a plurality of spacers 35 are arranged on the roller 34, and a material bar grouping groove 36 is formed between two adjacent spacers 35, and the width of the material bar grouping groove 36 is greater than or equal to The sum of the widths of two or more strips side by side. This kind of material strip grouping groove 36 is different from the traditional material strip guide groove structure with the same width as a single material strip. This kind of grouping groove 36 structure places two or more material strips in the same groove, so that the material strips The strips are conveyed in groups, so that each group of strips will not affect the conveyance of the other group of strips during the conveying process, and the strips will not gather to one side, resulting in serious wear of the pressure roller at the gathering side, and the strips are evenly distributed. The pressure roller will not be partially worn, so as to obtain a better service life and more stable and reliable working performance.

The aforementioned base plate 31 is also provided with a plurality of material leakage grooves 37 at the afterbody of its material strip guide groove 33, and the material leakage grooves 37 are used to leak out the broken grains splashed into the material strip guide groove 33, so as to prevent the generation of The crumbs or dust accumulated in the bar guide groove 33 hinder the normal conveying of the bar. This leakage groove 37 extends vertically with the conveying direction of the material strip, and the leakage groove 37 runs through the bottom plate 31 up and down. The leakage groove 37 is preferably arranged obliquely up and down. A baffle plate 38 is also preferably arranged above the tail of the aforementioned material strip guide groove 33, and the baffle plate 38 is used to cover the top of the tail of the material strip guide groove 33 to prevent dust or granules generated in the material cutting process from falling into the material strip guide slot 33. The left and right ends of this baffle plate 38 are respectively connected on the two side plates 32, and the baffle plate 38 is arranged with a certain inclination angle to the rear and downward, and the front end of the baffle plate 38 extends to the front baffle plate near the protective cover device, and the baffle plate 38 is rearward. It is advisable for the end to extend close to the pressure roller.

As shown in Figure 4, the traction device 40 is installed behind the strip guide groove 33 of the aforementioned material strip guide device 30, the traction device 40 includes a traction wheel 41, and the traction wheel 41 is preferably a patterned roller type traction wheel. The left and right ends of the roller traction wheel are rotatably installed on the left and right bearings 12 by bearings 42 respectively, and one end of the flower roller traction wheel 41 is installed with a driven wheel 43 for cooperating with the driving wheel on the pelletizing device. Wherein, the knurling 44 on the surface of the pattern roller traction wheel is arranged in the middle of the pattern roller, and the two ends of the pattern roller are respectively provided with positioning grooves 45 for matching with the scraper holders on both sides of a scraper device.

4, 5 and 6, the scraper device 60 includes a scraper 61 and scraper holders 62 on both sides, the front ends of the two scraper holders 62 are pivotally connected to the left and right supports 12, so that the scraper holder 62 can be turned over for use, Its scraper 61 is then installed in the rear end of scraper frame 62, moves with scraper frame 62 turnover, so that the cleaning operation of equipment. The lower parts of the scraper holders 62 on both sides are inserted into the positioning grooves 45 on the aforementioned floral rollers, and a small clearance fit is maintained between the inner side of the scraper holders 62 and the inner sidewall of the positioning grooves 45, so that fine materials can be effectively prevented. Strips or scraps are hindered from being wound in the matching gap between the scraper holder and the pattern roller to ensure the correct use height and angle of the scraper.

As shown in Fig. 3, the pelletizing device 50 includes a fixed knife 51 at the front and a hob 52 at the rear. The knife rest 53 can adjust the working gap and the working height of the fixed knife 51 and the hob 52 . One end of the cutter shaft of the hob 52 is connected with a driving motor 54, and the other end of the cutter shaft is equipped with a driving wheel 55, which is meshed with the driven wheel 43 of the aforementioned traction device. The driving motor 54 drives the hob 52 and the driving wheel 55 to rotate, and the driving wheel 55 drives the aforementioned pattern roller traction wheel 41 to rotate through the driven wheel 43 .

And, it is better to add a scraper block 16 on the frame inner wall behind the aforementioned hob 52. This scraper block 16 is located near the side, rear, and bottom of the hob 52, and the distance between the hob 5.0mm and the hob is 5.0 mm. To 8.0mm is appropriate. The scraper block 16 can be used to scrape off the particles adhering to the hob, avoiding accumulation of particles on the hob, and ensuring that the hob has a continuous and excellent cutting performance.

As shown in FIG. 7 , the aforesaid pressure wheel device 70 includes a pressure wheel frame 71 and a pressure wheel 72, and the rear end of the pressure wheel frame 71 is pivotally connected to the aforementioned left and right supports 12, so that the pressure wheel frame 71 can be flipped and moved, and the pressure wheel The left and right sides of the frame 71 front portion also extend downwards a pressure column 73 respectively, and this pressure column 73 is used to press on the aforementioned scraper frame 62, so that the pressure wheel 72 can keep an appropriate distance with the traction wheel 41 below, without To make the pinch wheel 72 directly contact with the knurling on the traction wheel 41, so that the pinch wheel 72 is easy to be worn. The lower end of the pressing column 73 is pointed, so that the pressing contact area of the pressing column 73 on the scraper frame 62 can be minimized to prevent the debris or dust on the scraper frame 62 from interfering with its pressing height, especially the left and right pressing balance . It should be noted that the above-mentioned pressing column 73 is not limited to a circular column, it can also be in the shape of a square column or a thin plate, but no matter what shape the column is, its lower end needs to be made into a pointed structure. The pressure wheel 72 is rotatably installed on the front end of the pressure wheel frame 71, and moves up and down with the turning of the pressure wheel frame 71; The material strip above 41 is close to traction wheel 41, guarantees the traction force of traction wheel 41 to each material strip.

The pressure wheel frame 71 is also provided with a cooling air duct 74, one end of the cooling air duct 74 is connected to the air compressor, the cooling air duct 74 is located on the side of the aforementioned pressure wheel, and a plurality of air ducts are arranged on the side facing the pressure wheel 72 Vent. The pressure roller 72 can be directly blown and cooled by using the air outlet, so that the pressure roller 72 can maintain an appropriate working temperature, and the working life of the pressure roller 72 can be effectively extended.

As shown in FIG. 8 , the protective cover device 80 is used to cover the aforementioned accommodating space 13 from above, so that the aforementioned pelletizing device 50, traction device 40, pressing wheel device 70, etc. can be cut in a safe closed space. granular work. The protective cover device 80 includes a cover plate 81, the rear end of the cover plate 81 is rotatably pivotally connected to the mounting seat 20 on the rear side of the aforementioned support 12 through a shaft rod 88, so that the cover plate 81 can be flipped open and closed, and the cover The front end of the plate 81 is provided with a locking mechanism 82 , and the front end of the cover plate 81 is detachably locked on the support 12 by using the locking mechanism 82 to cooperate with the lock hole 15 at the front end of the support. The locking mechanism 82 has a telescopic rod 821 that is positioned at the left and right sides of the cover plate and can extend laterally. Open and close operation. The aforementioned mounting base 20 has a fitting portion 21 that is directly matched with the shaft rod 88 , and a limiting block 22 that controls the backward turning angle of the cover plate is integrally and obliquely extended upward from the fitting portion 21 .

The protective cover device 80 is also provided with a cylinder 83 and a push rod 84 driven and controlled by the cylinder, and the push rod 84 is used for pressing on the aforementioned pressure roller frame 71 to control and adjust the pressing force and height of the pressure roller 72 . The left and right sides of the middle part of the inner wall of the cover plate 81 are protrudingly provided with a pressure rod 85 respectively, and the pressure rod 85 is used to press on the aforementioned scraper frame 62, so that the scraper frame 62 can be kept tightly attached to the pattern roller traction wheel 41. . And the lower end of the pressing bar 85 is pointed, which can minimize the pressing contact area of the pressing bar on the scraper frame 62, prevent the debris or dust on the scraper frame 62 from interfering with its pressing height, and especially effectively avoid the protective cover. Crash issue occurs when collapsing. The pressure rod 85 penetrates upwards through the cover plate 81, and an adjusting nut is installed on the upper surface of the pressure rod 85 passing through the cover plate 81. The lowering of the pressure rod can be directly adjusted from the outside by using the adjusting nut arranged on the outer surface of the cover plate. The compression length is different from the traditional structure that needs to open the cover to adjust. It should be noted that the above-mentioned pressure rod 85 is not limited to a round rod, it can also be a square rod or a thin plate, but no matter what shape the rod body is, its lower end needs to be made into a pointed structure.

And, the middle part of the inner wall of the cover plate 81 also protrudes downwards with a baffle plate 86, which is located at the rear side of the axis of the pinch roller 72 of the pinch wheel device, and the baffle plate 86 is preferably arranged on a position relative to the aforementioned At the position where the inner edge surface of the pinch wheel is tangent, the baffle plate 86 protrudes downwards close to the round surface of the pinch wheel 72, which is used to prevent the dust and broken particles generated by the hob during the granulation process from splashing through the top of the pinch wheel To the front, especially prevent it from splashing into the material strip guide groove 33 of the front. The baffle plate 86 is provided with a relief groove 87 for avoiding the pressure roller frame 71 .

The working principle, method of use or working process of the present embodiment are described in detail as follows:

When in use, the multiple strips side by side are transported into the strip guide groove 33, and are sent into groups between the pressure wheel 72 and the traction wheel 41, and the strips are pushed regularly by the rotation traction of the traction wheel 41. Between the hob 52 and the fixed knife 51, the rotation of the hob 52 cuts the strip into granular plastic material. The plastic material falls into the collecting hopper through the collecting port below the pelletizing device 50 .

When maintenance or cleaning is required after use, the user needs to first open the locking mechanism of the protective cover device 80, turn the entire protective cover device 80 upwards to open, then turn the pressure roller device 70 upwards and backwards, and then open the front side door to hold the strip The guide device 30 moves to one side, and finally the scraper device 60 is turned forward and upward. Make its traction device 40 and pelletizing device 50 exposed, at this moment just can clean up the dust that may remain on each part and the crumb, or repair and replace damaged parts.

The above are only preferred embodiments of the present utility model, and do not limit the technical scope of the present utility model, so any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present utility model , all still belong to the scope of the technical solution of the utility model.

Claims (10)

1. a plastic grain cutting machine, include frame, frame is provided with workbench, workbench is provided with left and right two bearings, material strip guider, draw-gear and pellet device that throughput direction according to material strip sets gradually are installed in the accommodation space between this two bearing, above draw-gear and pellet device, are also fitted with doctor blade device, pressing wheel device and protective cover; Wherein, this draw-gear has traction wheel, doctor blade device has scraper and is connected to the doctor blade holder at scraper two ends, two doctor blade holders are fastened in the two ends of aforementioned traction wheel respectively, it is characterized in that: be respectively arranged with detent in the two ends of this traction wheel, aforementioned two doctor blade holder bottoms respectively inlay card enter in this detent.

2. plastic grain cutting machine according to claim 1, is characterized in that: the inner side of described doctor blade holder and detent madial wall between keep small―gap suture to coordinate.

3. plastic grain cutting machine according to claim 1, is characterized in that: described traction wheel is flower roll-type traction wheel, and the annular knurl on flower roller traction wheel surface is arranged at the middle part of colored roller.

4. plastic grain cutting machine according to claim 1; it is characterized in that: described material strip guider includes base plate and biside plate; a material strip gathering sill is enclosed out by this base plate and biside plate; in the porch of this material strip gathering sill, one roller is installed; roller is provided with multiple parting bead; in between adjacent two parting beads, form a material strip grouping groove, the width of this material strip grouping groove is more than or equal to the width sum of the material strip of more than two side by side.

5. plastic grain cutting machine according to claim 1; it is characterized in that: described material strip guider includes base plate and biside plate; a material strip gathering sill is enclosed out by this base plate and biside plate; base plate is also provided with a plurality of leakage hoppers in the afterbody of its material strip gathering sill; leak that hopper is vertical with material strip throughput direction extends, and leak hopper up/down perforation base plate.

6. plastic grain cutting machine according to claim 5, is characterized in that: described leakage hopper above-below direction is obliquely installed.

7. the plastic grain cutting machine according to claim 4 or 5, is characterized in that: described material strip gathering sill upper rear also arranges a baffle plate, and the two ends, left and right of this baffle plate are connected on biside plate, and baffle plate backward inclined downward is arranged.

8. the traction wheel lap guard material strip structure of a plastic grain cutting machine; include draw-gear and doctor blade device; this draw-gear has traction wheel; doctor blade device has scraper and is connected to the doctor blade holder at scraper two ends; two doctor blade holders are fastened in the two ends of aforementioned traction wheel respectively; it is characterized in that: be respectively arranged with detent in the two ends of this traction wheel, aforementioned two doctor blade holder bottoms respectively inlay card enter in this detent.

9. the traction wheel lap guard material strip structure of plastic grain cutting machine according to claim 8, is characterized in that: the inner side of described doctor blade holder and detent madial wall between keep small―gap suture to coordinate.

10. the traction wheel lap guard material strip structure of plastic grain cutting machine according to claim 8, is characterized in that: described traction wheel is flower roll-type traction wheel, and the annular knurl on flower roller traction wheel surface is arranged at the middle part of colored roller.