CN210590084U

CN210590084U - Plastic granulator with detachable hob cutter

Info

Publication number: CN210590084U
Application number: CN201921537804.XU
Authority: CN
Inventors: 胡志高
Original assignee: Dongguan Kaibai Plastic Technology Co Ltd
Current assignee: Dongguan Kaibai Plastic Technology Co Ltd
Priority date: 2019-09-16
Filing date: 2019-09-16
Publication date: 2020-05-22
Anticipated expiration: 2029-09-16

Abstract

The utility model relates to a plastic granulator with a detachable hob cutter, which comprises a frame, wherein a material cutting chamber with an opening at the top is arranged on the frame, the hob cutter is rotatably connected in the material cutting chamber and comprises a cutter shaft and a cutter blade, a plurality of cutter grooves are arranged on the cutter shaft, and a fixture block is arranged at the lower part of the cutter blade; the fixture blocks of the blades are clamped in the cutter grooves, the two ends of the cutter shaft are provided with fixing plates, and the size of each fixing plate is larger than that of each end of the cutter shaft. The utility model discloses have and to change single blade, can avoid the condemned condition of whole hobbing cutter, save the cost, improved the effect of the eager grain qualification rate of plastics.

Description

Plastic granulator with detachable hob cutter

Technical Field

The utility model belongs to the technical field of the technique of plastics granulation and specifically relates to a but plastics pelleter of hobbing cutter split is related to.

Background

The plastic granulator is a granulator, is mainly used for processing waste plastic films (industrial packaging films, agricultural mulching films, greenhouse films, beer bags, hand bags and the like), woven bags, agricultural convenient bags, basins, barrels, beverage bottles, furniture, daily necessities and the like, is suitable for most common waste plastics, and is a plastic regeneration processing machine which has the widest application range and the most extensive use range in the waste plastic regeneration industry and is most popular with users.

The plastic granulator comprises a base, a left wall plate, a right wall plate, a motor, a transmission device, a pressure roller, a hob (slitting cutter), a flail cutter (granulating cutter), a sieve bucket and other parts. The left and right wall boards are arranged in the transmission device on the upper part of the base, the material pressing roller, the hob and the flail knife are arranged in the wall boards, and the motor and the sieve hopper are arranged in the base.

The integrated connection has a piece blade on current hobbing cutter, when appearing the breach on the blade, the easy tailing of the plastic pellet who cuts out, even grain, consequently need change new hobbing cutter. Because the hob is expensive, once one blade is worn, the whole hob is scrapped, which causes resource waste, and only needs to improve the existing technology.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a but plastic pellet cutting machine of hobbing cutter split, when one of them blade on the hobbing cutter damaged, can dismantle this blade and change, save the cost, the plastic granules who cuts out simultaneously is difficult for producing phenomenons such as trailing, company's grain.

The utility model aims at realizing through the following technical scheme:

a plastic granulator with a detachable hob comprises a rack, wherein a material cutting chamber with an opening at the top is arranged on the rack, the hob is rotatably connected in the material cutting chamber and comprises a hob shaft and a blade, a plurality of cutter grooves are formed in the hob shaft, and a clamping block is arranged at the lower part of the blade; the fixture blocks of the blades are clamped in the cutter grooves, the two ends of the cutter shaft are provided with fixing plates, and the size of each fixing plate is larger than that of each end of the cutter shaft.

By adopting the technical scheme, the hob is provided with the cutter groove, the fixture block connected with the lower part of the blade is clamped into the cutter groove and is fixed by the fixing plate, and the fixing plate limits two sides of the knife shaft, so that the blade clamped into the cutter groove is not easy to slide out of two sides of the knife shaft; the single blade is replaced, the condition that the whole hob is scrapped can be avoided, the cost is saved, and the qualified rate of plastic grain cutting is improved.

The utility model discloses further set up to: the cutter shaft is cylindrical, two sides of the cutter shaft are fixed to two side walls of the cutting chamber, and the cutter grooves are distributed along the circumference of the cutter shaft.

Through adopting above-mentioned technical scheme, the arbor is fixed at the both sides wall of blank room, and the sword groove is provided with a plurality ofly in the arbor, and the blade can be fixed in the sword groove for the blade is at arbor pivoted in-process, cuts the plastic strip constantly, improves the efficiency of production.

The utility model discloses further set up to: the cutter grooves are arranged along the length direction of the cutter shaft, cutter inlets are formed in the two sides of the cutter shaft, and the width of the notches of the cutter grooves on the circumferential surface of the cutter shaft is smaller than the width of the inner parts of the cutter grooves.

Through adopting above-mentioned technical scheme, the width of sword groove notch is less than the width in the sword groove, and the fixture block can be followed the cutting feed mouth slide-in of sword groove and fixed for the blade is difficult to loosen from the sword groove in the pivoted in-process.

The utility model discloses further set up to: the cross section width of the part of the clamping block connected with the blade is consistent with the width of the notch of the cutter groove, and the cross section width of one side of the clamping block, which is far away from the blade, is consistent with the width of the inner part of the cutter groove.

Through adopting above-mentioned technical scheme, the fixture block can closely cooperate with the draw-in groove for the arbor is difficult not hard up at the pivoted in-process, guarantees that the plastic granules who cuts out meet the demands.

The utility model discloses further set up to: the blade is including treating tangent plane and cutting plane, it is straight to treat the tangent plane one side, the cutting plane is polished and is narrowed to its edge of a side of blade far away from the sword groove is sharp-pointed.

Through adopting above-mentioned technical scheme, the one side of blade is straight, and the one side is sharp for the plastic strip is cut off more easily, and straight face can reduce the deformation of the plastic strip that the area cut, makes the plastic granules who cuts out accord with specification standard.

The utility model discloses further set up to: the fixing plate is circular, and the fixing plate and the cutter shaft are fixed through screws.

Through adopting above-mentioned technical scheme, the fixed plate is circular to with the fix with screw, at the difficult pine of arbor pivoted in-process blade, fixed plate and take off, strengthen the stability of arbor and blade.

The utility model discloses further set up to: the hob is made of hard alloy.

By adopting the technical scheme, the hard alloy is 65Mm spring steel, has the tendency of over-heat sensitivity and temper brittleness and high wear resistance, and can be used for manufacturing hobbing cutters with complex shapes, small deformation, wear resistance and high and low speed cutting.

To sum up, the utility model discloses a beneficial technological effect does:

1. the hob cutter is divided into a cutter shaft and blades, when a single blade is damaged, the damaged blade can be removed, a new blade is replaced, the situation that the whole hob cutter is scrapped when the single blade is in a problem is avoided, the cost is saved, and the qualified rate of plastic grain cutting can be improved while the good blade is kept;

2. the lower part of the blade is provided with a clamping block, and the clamping block is matched with the clamping groove in shape and size, so that the cutter shaft is not easy to loosen in the rotating process, and the qualification rate of plastic particles is ensured;

3. the blade edge is sharp, and the one side of blade is straight for the plastic strip that treats to cut is difficult for receiving the inclined plane oppression of blade and warp, influences the effect of cutting.

Drawings

Fig. 1 is a schematic structural diagram of the plastic granulator with a detachable hob of the present invention.

Fig. 2 is a schematic structural diagram of the hob of the present invention.

In the figure, 1, a frame; 11. a material cutting chamber; 2. hobbing cutters; 21. a cutter shaft; 211. hinging a shaft; 212. a fixing hole; 22. a cutter groove; 221. a knife inlet; 222. a notch; 23. a blade; 231. cutting into noodles; 232. cutting a noodle; 233. a clamping block; 24. a fixing plate; 241. and fixing the screw hole.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, for the present invention discloses a plastic granulator with a detachable hob 2, which comprises a frame 1, a hob 2 and a material cutting chamber 11 disposed above the frame 1.

Two side walls of the material cutting chamber 11 are provided with hinge holes (not shown in the figure) for fixing two sides of the hob 2, so that the hob 2 rotates in the material cutting chamber 11 to cut the plastic strips.

The hob cutter 2 is made of hard alloy, the hard alloy is made of 65Mm spring steel particles, has the tendency of over-heat sensitivity and temper brittleness and high wear resistance, and can be used for manufacturing the hob cutter 2 with complex shape, small deformation, wear resistance and high and low speed cutting.

The hob cutter 2 comprises a cutter shaft 21 and a blade 23. Arbor 21 is cylindricly, and the both ends an organic whole of arbor 21 is connected with articulated shaft 211, and the diameter of articulated shaft 211 slightly is less than the diameter of hinge hole for articulated shaft 211 and hinge hole clearance fit. The knife shaft 21 is rotated by a motor (not shown). Since the motor is a prior art, it is not described herein in detail.

The cutter shaft 21 is provided with cutter grooves 22, the cutter grooves 22 are arranged along the length direction of the cutter shaft 21, the cutter grooves 22 are provided with cutter inlets 221 at two ends of the cutter shaft 21, and the blades 23 can be clamped into the cutter grooves 22 from the cutter inlets 221. The pocket 22 is provided with a notch 222, the notch 222 of the pocket 22 is provided in the length direction of the pocket 22, and the width of the notch 222 is smaller than the width of the inside of the pocket 22, and the notch 222 functions to restrict the insert 23 from being released from the pocket 22.

The cutter grooves 22 are arranged in plural in the circumferential direction of the cutter shaft 21, and the cutter blades 23 are mounted in the cutter grooves 22. The arrangement enables the blade 23 to continuously cut the plastic strips when the cutter shaft 21 rotates, and production efficiency is improved.

The blade 23 includes a to-be-cut surface 231 and a cut surface 232, the to-be-cut surface 231 is flat, the cut surface 232 is ground to form an inclined angle, so that the edge of the blade 23 is gradually narrowed, the narrowed edge is sharp, and therefore, one side of the blade 23 has a sharp and sharp edge. When cutting, the straight face orientation of blade 23 is treated the plastic strip one side that cuts, and the cutting face 232 of blade 23 is towards the part that the plastic strip was cut, and the advantage of straight face orientation plastic strip lies in that, straight face does not produce the effort of extrusion downwards to plastic strip one side up at the in-process that pushes down, only produces the effort to the edge that cuts, consequently treats that tangent plane 231 can reduce the deformation of plastic strip for the plastic granules who cuts out accords with specification standard. The cutting surface 232 is polished to be sharp in edge, so that the plastic strip can be cut off more easily, and the produced plastic particles are not easy to smear and connect.

The lower part of the blade 23 is connected with the fixture block 233, the cross section width of the part of the fixture block 233 connected with the blade 23 is consistent with the width of the notch 222 of the knife groove 22, and the cross section width of the side, far away from the blade 23, of the fixture block 233 is consistent with the width of the inside of the knife groove 22, so that the fixture block 233 can be tightly matched with the clamping groove, the fixture block 233 is clamped in the clamping groove, the blade 23 is not easy to loosen or shake in the rotating process of the knife shaft 21, and the production quality of plastic particles is ensured.

The both ends of arbor 21 are provided with fixed plate 24, and fixed plate 24 is circular, is equipped with the trompil that supplies articulated shaft 211 to pass in the middle of the fixed plate, and evenly distributed has 4 fixed screw 241 on the fixed plate 24, and the both ends of arbor 21 also are provided with four corresponding fixed orificess 212, and the screw passes fixed screw 241 and is fixed with the fixed orifices 212 of arbor 21.

The diameter of the fixing plate 24 is consistent with the maximum diameter of the knife shaft 21, so that the fixing plate 24 can cover the knife inlet 221, and the knife blade 23 cannot easily slide out of the knife inlet 221.

The implementation principle of the embodiment is as follows: the hob 2 comprises a hob shaft 21 and a blade 23, wherein a plurality of knife grooves 22 are arranged on the hob shaft 21, the lower part of the blade 23 is connected with a fixture block 233, the fixture block 233 is inserted into a knife inlet 221 of the knife groove 22, and the width of a notch 222 of the knife groove 22 is smaller than that of the inside of the knife groove 22, so that the fixture block 233 is clamped in the knife groove 22 and is not easy to loosen and fall off; the fixing plate 24 can limit the latch 233 of the blade 23 from sliding out of the feed opening 221. When a single blade 23 is damaged, the blade 23 can be removed and replaced.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a but plastic pellet cutting machine of hobbing cutter split, includes frame (1), be provided with open-top's blank room (11) on frame (1), blank room (11) internal rotation is connected with hobbing cutter (2), its characterized in that: the hob (2) comprises a hob shaft (21) and a hob blade (23), a plurality of hob grooves (22) are formed in the hob shaft (21), and a clamping block (233) is arranged at the lower part of the hob blade (23); the clamping blocks (233) of the blades (23) are clamped in the tool grooves (22), fixing plates (24) are arranged at two ends of the cutter shaft (21), and the size of each fixing plate (24) is larger than that of each end of the cutter shaft (21).

2. The roller-splittable plastic pelletizer of claim 1, wherein: the cutter shaft (21) is cylindrical, two sides of the cutter shaft (21) are fixed to two side walls of the cutting chamber (11), and the cutter grooves (22) are distributed along the circumference of the cutter shaft (21).

3. The roller-splittable plastic pelletizer of claim 1, wherein: the knife groove (22) is arranged along the length direction of the knife shaft (21), the knife inlet edges (221) are arranged on the two sides of the knife shaft (21) of the knife groove (22), and the width of a notch (222) of the knife groove (22) on the circumferential surface of the knife shaft (21) is smaller than the width inside the knife groove (22).

4. The roller-splittable plastic pelletizer of claim 3, wherein: the cross section width of the part of the fixture block (233) connected with the blade (23) is consistent with the width of the notch (222) of the cutter groove (22), and the cross section width of the side, away from the blade (23), of the fixture block (233) is consistent with the width of the inside of the cutter groove (22).

5. The roller-splittable plastic pelletizer of claim 1, wherein: the blade (23) comprises a to-be-cut surface (231) and a cutting surface (232), wherein one surface of the to-be-cut surface (231) is flat, the cutting surface (232) is polished to be narrow, and the edge of one side edge of the blade (23) far away from the cutter groove (22) is sharp.

6. The roller-splittable plastic pelletizer of claim 1, wherein: the fixing plate (24) is circular, and the fixing plate (24) and the cutter shaft (21) are fixed through screws.

7. The roller-splittable plastic pelletizer of claim 1, wherein: the hob (2) is made of hard alloy.