Roller cutter assembly for cold brace granulator and cold brace granulator

Abstract

The utility model provides a roller cutter assembly for a cold brace granulator and the cold brace granulator. The roller cutter assembly comprises a disc-shaped roller and a plurality of cutters distributed on the peripheral face of the roller. And the plurality of cutters are all detachably connected with the roller wheel. According to the roller cutter assembly for the cold brace granulator, one or more cutters can be independently replaced, the damaged cutter can be replaced in time, the problem that the whole roller cutter needs to be replaced in the prior art is solved, and material consumption is reduced. And meanwhile, the roller and the cutter are detachably connected through the fixing disc and the fixing nut, so that the cutter is more convenient to replace.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of plastic particle processing, and specifically relates to a roller cutter assembly for a cold-drawing strip granulator and a cold-drawing strip granulator comprising the same. BACKGROUND

[0002] The cold-drawing strip granulator is mainly applied to plastic particle processing and cold-drawing strip plastic processing and comprises an extrusion device, a cooling system, a traction device and a granulation device. Material is extruded into a strip from a die hole through the extrusion device, the strip is cooled by cooling water in the cooling system, and then the cooled strip is granulated by the granulation device under the traction of the traction device. During production and processing, because the cold-drawing strip granulator is operated for a long time, and in addition, the environment is hot and humid, the roller cutter in the granulation device is prone to blade rolling, blade breaking or other damage. Once the cutter is damaged, the size and shape of the granules during production and processing will be affected, and long strips, connected granules, inclined cutters and trailing will occur. Therefore, the roller cutter needs to be replaced in time. The integrated roller cutter in the prior art is very troublesome to replace, and the entire roller cutter needs to be replaced, which is time-consuming and material-wasting.

[0003] Therefore, it is urgent for those skilled in the art to develop a roller cutter assembly for a cold-drawing strip granulator which can replace the cutter. SUMMARY

[0004] The utility model discloses a kind of roller cutter assemblies for cold-drawing strip granulator, and the purpose is to solve the problems existing in the prior art.

[0005] One of the purposes of the utility model provides a kind of roller cutter assembly for cold-drawing strip granulator, including the roller of disc shape and the multiple cutters distributed in the outer circumferential surface of the roller;Wherein, multiple the cutter is detachably connected with the roller.

[0006] In a preferred embodiment of the utility model, the outer circumferential surface of the roller is provided with multiple cutter clamping pieces, and a cutter clamping groove is formed between adjacent two cutter clamping pieces.

[0007] In a preferred embodiment of the utility model, the cutter clamping groove includes a first accommodating portion, and the width of the first accommodating portion gradually decreases from inside to outside.

[0008] Preferably, the cutter clamping groove further includes a second accommodating portion, the second accommodating portion is located on the outside of the first accommodating portion, and the width of the second accommodating portion is the same as the width of the outside of the first accommodating portion.

[0009] In a preferred embodiment of the utility model,

[0010] The roller cutter assembly further comprises two fixed discs, and the two fixed discs are respectively arranged on the two sides of the roller; the two fixed discs are coaxially arranged with the roller, and the two fixed discs are connected with the roller; the diameters of the two fixed discs are greater than the diameter of the roller.

[0011] Preferably, the roller is detachably connected with the two fixed discs.

[0012] More preferably, the diameter of one of the fixed discs is greater than the diameter of the other fixed disc.

[0013] In a preferred embodiment of the utility model,

[0014] The roller cutter assembly further comprises two fixed discs, and the two fixed discs are respectively arranged on the two sides of the roller; the two fixed discs are coaxially arranged with the roller, and the two fixed discs are connected with the roller; the diameters of the two fixed discs are greater than the diameter of the roller.

[0015] Preferably, the roller is detachably connected with the two fixed discs.

[0016] In a preferred embodiment of the utility model, each cutter comprises a cutter holder, a cutter body, a cutter head and a cutter edge connected in sequence; wherein the shape of the cutter holder matches the shape of the first accommodating portion.

[0017] Preferably, the shape of the cutter body matches the shape of the second accommodating portion.

[0018] In a preferred embodiment of the utility model, the bottom surface of the cutter holder is an arc surface, and the curvature of the arc surface matches the outer peripheral surface of the roller.

[0019] In a preferred embodiment of the utility model, the included angle between the cutter head and the cutter body is an acute angle.

[0020] In a preferred embodiment of the utility model, the included angle between the cutter head and the cutter body is 30-60 DEG.

[0021] The second purpose of the utility model is to provide a cold-drawing strip granulator, which comprises an extrusion device, a traction device and the roller cutter assembly of the first purpose of the utility model connected in sequence.

[0022] Compared with the prior art, the utility model has the beneficial effects that:

[0023] 1. The roller cutter assembly for the cold-drawing strip granulator of the utility model, can replace a certain one or several cutters alone, which can be replaced in time when any cutter is damaged, solves the problem of replacing the whole roller cutter in the prior art, and saves material consumption.

[0024] 2. The roller cutter assembly for the cold-drawing strip granulator of the utility model can install a corresponding number of cutters according to the granulation requirement, and then realize different granulation effects, and is suitable for a wide range of applications.

[0025] 3. The roller cutter assembly for the cold-drawing strip granulator of the utility model, the cutter is provided with a cutter holder, on the one hand, the cutter can be effectively clamped into the cutter clamping groove, and on the other hand, the connection between the cutter and the roller is more stable, and the granulation quality is ensured.

[0026] 4. The roller cutter assembly for the cold-drawing strip granulator of the utility model, the bottom surface of the cutter holder is matched with the outer circular surface of the roller, so that the torque can be better dispersed, the force can be dispersed, and the cutter can be effectively protected from being damaged.

[0027] 5. The roller cutter assembly for the cold-drawing strip granulator of the utility model, the included angle between the cutter head and the cutter body is an acute angle, the cutter head is designed to have a certain inclination angle, the granulation effect is better, the cutter transverse stress is dispersed, the cutting edge is effectively protected, and the service life of the cutter is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a perspective view of the roller cutter assembly for the cold-drawing strip granulator of the utility model;

[0029] Figure 2 It is a front view of the roller in the roller cutter assembly for the cold-drawing strip granulator of the utility model;

[0030] Figure 3 It is a side view of the cutter in the roller cutter assembly for the cold-drawing strip granulator of the utility model;

[0031] Figure 4 It is a front view of the cutter in the roller cutter assembly for the cold-drawing strip granulator of the utility model;

[0032] In the drawing, 1 is a cutter, 11 is a cutter holder, 12 is a cutter body, 13 is a cutter head, and 14 is a cutting edge; 2 is a fixed disc; 3 is a fixed nut; 4 is a roller; 5 is a cutter clamping groove, 51 is a first containing part, and 52 is a second containing part; 6 is a fixed hole; and 7 is a cutter clamping piece. DETAILED DESCRIPTION

[0033] The utility model will be further described in detail in combination with the drawings:

[0034] Example 1

[0035] As Figures 1-4 shown, the utility model provides a kind of roller cutter assembly for cold drawing strip granulator, including roller 4, multiple cutter 1 distributed in the outer circumferential surface of roller 4;Wherein, multiple cutter 1 all with the detachable connection of roller 4.It needs to be explained, different number of cutter 1 can be selected according to different needs, and then control granulating effect.Specific to the embodiment, roller 4 is disc-shaped, and its outer periphery is provided with multiple cutter clamping members 7, and multiple cutter clamping members 7 are preferably set at equal intervals.Cutter clamping groove 5 is formed between adjacent two cutter clamping members 7.Cutter clamping groove 5 includes first accommodating portion 51, to accommodate cutter 1, so that cutter 1 can be embedded in the outer circumferential surface of roller 4 by cutter clamping groove 5.Preferrably, the width of first accommodating portion 51 gradually decreases from inside to outside.More preferably, cutter clamping groove 5 also includes second accommodating portion 52, and second accommodating portion 52 is located on the outside of first accommodating portion 51, and the width of second accommodating portion 52 is the same as the width of the outermost side of first accommodating portion 51.This is that multiple cutter 1 all with the detachable connection of roller 4.

[0036] In a preferred embodiment of the utility model, the roller cutter assembly further includes two fixed discs 2, and the two fixed discs 2 are respectively arranged on the two sides of the roller 4.Both of the two fixed discs 2 are coaxially arranged with the roller 4, and both of the two fixed discs 2 are connected with the roller 4.Both of the two fixed discs 2 have a diameter larger than that of the roller 4, so that part of the multiple cutters 1 is located between the two fixed discs 2, and the other part is located outside the two fixed discs 2.Preferrably, the roller 4 and the two fixed discs 2 are detachably connected.Exemplarily, a fixed hole 6 is formed at the axis of the roller 4, and a through hole is also formed at the axis of each of the two fixed discs 2.A bolt can pass through the fixed hole 6 and the through hole of each of the two fixed discs 2, and then a fixed nut 3 is used to achieve the detachable connection between the roller 4 and the two fixed discs 2.More preferably, one of the two fixed discs 2 has a diameter larger than that of the other fixed disc 2, so that the stress on the cutter 1 is more dispersed during rotation, and the cutter 1 is also more secure.

[0037] As known from the above, the multiple cutters 1 on the outer circumferential surface of the roller 4 can be individually detached and replaced, so that the cutter 1 that is damaged can be replaced in time, solving the problem of replacing the entire roller cutter in the prior art and saving material consumption.Meanwhile, the roller 4 is detachably connected with the two fixed discs 2 through the bolt and the fixed nut 3, making the replacement operation of the cutter 1 more convenient.

[0038] In another preferred embodiment of the utility model, as Figure 1As shown, the roller cutter assembly further comprises two fixed discs 2, and the two fixed discs 2 are respectively arranged on the two sides of the roller 4; the two fixed discs 2 are coaxially arranged with the roller 4, and the two fixed discs 2 are connected with the roller 4; the diameter of one of the fixed discs 2 is greater than the diameter of the roller, and the diameter of the other fixed disc 2 is less than the diameter of the roller 4, so that the stress of the cutter 1 is more dispersed during rotation, and the cutter 1 is more firm. Preferably, the roller 4 and the two fixed discs 2 are detachably connected. Illustratively, the axis of the roller 4 is provided with a fixing hole 6, and the axes of the two fixed discs 2 are also provided with through holes, and the roller 4 and the two fixed discs 2 can be detachably connected by means of bolts passing through the fixing hole 6 and the through holes of the two fixed discs 2 and then using fixing nuts 3.

[0039] In a preferred embodiment of the utility model, the plurality of cutters 1 successively comprise a cutter holder 11, a cutter body 12, a cutter head 13 and a cutter edge 14. The shape of the cutter holder 11 matches the shape of the first accommodating portion 51, on the one hand, facilitating the cutter 1 to be effectively clamped into the cutter clamping groove 5, and on the other hand, enabling the cutter 1 to be more stably connected with the roller 4, thereby ensuring the quality of the cut particles. The shape of the cutter body 12 matches the shape of the second accommodating portion 52, on the one hand, facilitating the cutter 1 to be effectively clamped into the cutter clamping groove 5, and on the other hand, enabling the cutter 1 to be more stably connected with the roller 4, thereby ensuring the quality of the cut particles. The cutter head 13 and the cutter edge 14 are arranged on the outer side of the cutter clamping groove 5.

[0040] In a preferred embodiment of the utility model, the bottom surface of the cutter holder 11 is arc-shaped, and the curvature thereof matches the outer peripheral surface of the roller 4, so as to better disperse the torque and disperse the force, thereby effectively protecting the cutter from being damaged. In another preferred embodiment of the utility model, the included angle between the cutter head 13 and the cutter body 12 is an acute angle, and the cutter head 13 is designed to have a certain inclination angle, so as to better cut the particles, disperse the horizontal stress of the cutter 1, effectively protect the cutter edge 14 and prolong the service life of the cutter 1. More preferably, the included angle between the cutter head 13 and the cutter body 12 is 30-60°.

[0041] The assembly process of the roller cutter assembly is as follows: firstly, the cutter holder 11 and the cutter body 12 of the plurality of cutters 1 are respectively embedded into the cutter clamping groove 5 in the roller 4, and after the plurality of cutters 1 are all embedded, the two fixed discs 2 are respectively fixed on the two sides of the roller 4 by means of bolts, fixing nuts 3 and fixing holes 6, thereby completing the installation of the roller cutter assembly. If it is necessary to replace or disassemble a certain cutter 1 after production and use, the fixing nuts 3 are loosened, the two fixed discs 2 are removed, and the cutter 1 to be disassembled is taken out, thereby completing the disassembly operation; the cutter 1 to be replaced is taken out and a new cutter 1 is installed, thereby completing the replacement operation.

[0042] Embodiment 2

[0043] The utility model provides a kind of cold-drawing strip granulator, including extrusion equipment, traction equipment and the roller cutter assembly described in embodiment 1 connected in sequence.Extrusion equipment is used to melt into homogeneous melt and continuously extrude by solid material plasticization.The material strip of extrusion molding is conveyed to roller cutter assembly under the action of traction equipment.Under the action of multiple cutter 1, material strip is cut into granule.

[0044] In the description of the utility model, it needs to be explained that, unless there is explicit provision and limitation, the term "connected", "connection" should be broad-sense understanding, for example, it can be fixed connection, can be detachable connection, or integrally connected;It can be mechanically connected, can be electrically connected;It can be directly connected, can be indirectly connected through intermediate medium.For ordinary skilled in the art, the above-mentioned term can be understood according to the specific meaning of the utility model.

[0045] In the description of the utility model, unless otherwise specified, the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, so it cannot be understood as a limitation on the utility model.

[0046] The above technical solution is only a kind of roller cutter assembly and cold-drawing strip granulator of the utility model, for the person skilled in the art, on the basis of the principle disclosed in the utility model, various types of improvements or deformations are easily made, and not limited to the technical solution described in the above embodiment of the utility model, therefore, the foregoing description is only preferred, and does not have the meaning of limitation.

Claims

1. A roller cutter assembly for a cold-drawn strip pelletizer, characterized in that, The device includes a disc-shaped roller and multiple cutters distributed on the outer circumferential surface of the roller; wherein each cutter is detachably connected to the roller; the outer circumferential surface of the roller is provided with multiple cutter retainers, and a cutter retaining groove is formed between two adjacent cutter retainers; the cutter retaining groove includes a first receiving portion, the width of which gradually decreases from the inside to the outside; the cutter retaining groove also includes a second receiving portion, the second receiving portion being located outside the first receiving portion, and the width of the second receiving portion being the same as the width of the outer side of the first receiving portion.

2. The roller cutter assembly for a cold-drawn strip pelletizer according to claim 1, characterized in that, The roller cutter assembly also includes two fixed disks, which are respectively disposed on both sides of the roller; both fixed disks are coaxially arranged with the roller and connected to the roller; the diameter of both fixed disks is larger than the diameter of the roller.

3. The roller cutter assembly for a cold-drawn strip pelletizer according to claim 2, characterized in that, The roller and the two fixed disks are detachably connected.

4. The roller cutter assembly for a cold-drawn strip pelletizer according to claim 3, characterized in that, The diameter of one of the fixed disks is larger than the diameter of the other fixed disk.

5. The roller cutter assembly for a cold-drawn strip pelletizer according to claim 1, characterized in that, The roller cutter assembly further includes two fixed disks, which are respectively disposed on both sides of the roller; both fixed disks are coaxially arranged with the roller and connected to the roller; one of the fixed disks has a diameter larger than the diameter of the roller, and the other fixed disk has a diameter smaller than the diameter of the roller.

6. The roller cutter assembly for a cold-drawn strip pelletizer according to claim 5, characterized in that, The roller and the two fixed disks are detachably connected.

7. The roller cutter assembly for a cold-drawn strip pelletizer according to claim 1, characterized in that, Each of the cutters includes a blade holder, a blade body, a blade head, and a blade edge connected in sequence; wherein the shape of the blade holder matches the shape of the first receiving portion.

8. The roller cutter assembly for a cold-drawn strip pelletizer according to claim 7, characterized in that, The shape of the blade matches the shape of the second receiving portion.

9. The roller cutter assembly for a cold-drawn strip pelletizer according to claim 7, characterized in that, The bottom surface of the cutter holder is an arc-shaped surface, and its curvature matches the outer circumference of the roller.

10. The roller cutter assembly for a cold-drawn strip pelletizer according to claim 9, characterized in that, The angle between the blade tip and the blade body is an acute angle.

11. The roller cutter assembly for a cold-drawn strip pelletizer according to claim 10, characterized in that, The angle between the blade tip and the blade body is 30-60°.

12. A cold-drawn strip pelletizer, characterized in that, It includes an extrusion device, a traction device, and a roller cutter assembly as described in any one of claims 1 to 11, connected in sequence.

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