CN220129226U

CN220129226U - Hot granulating device for producing injection molding granule

Info

Publication number: CN220129226U
Application number: CN202321036941.1U
Authority: CN
Inventors: 王明军; 邹科
Original assignee: Beijing Samyuan New Materials Co ltd
Current assignee: Beijing Samyuan New Materials Co ltd
Priority date: 2023-05-04
Filing date: 2023-05-04
Publication date: 2023-12-05
Anticipated expiration: 2033-05-04

Abstract

The utility model discloses a hot granulating device for producing injection molding granules, which comprises: the front end of the die is provided with a granulator connector; the rear end face of the die is a plane, a fixed mandrel hole is arranged in the middle eccentric position of the rear end face, and a plurality of extrusion holes are uniformly distributed on the die around the periphery of the circle center; the front end of the cutter shaft is fixedly connected with a fixed core shaft hole of the die; the rotary cutter assembly is movably arranged on the cutter shaft in a penetrating way and can rotate on the cutter shaft under the drive of an external driving device, the front end of the rotary cutter assembly is provided with a blade, the blade corresponds to a plurality of extrusion ports on the rear end surface of the die, and injection molding materials extruded from all the extrusion ports can be cut; the elastic adjusting component is arranged at the rear end of the cutter shaft and is in elastic contact with the rotary cutter component, and the tightness between the rotary cutter component and the rear end face of the die can be adjusted. The device simple structure, easily dismantle, the tool setting, the tool changing is convenient, has greatly shortened tool setting, tool changing time, and full blade cutting does benefit to the availability factor that improves the grain cutting blade moreover.

Description

Hot granulating device for producing injection molding granule

Technical Field

The utility model relates to the field of injection molding granule cutting devices, in particular to a hot granulating device for producing injection molding granule materials.

Background

Mixing granulation is a general technology in the injection molding industry, and the granule molding is realized by two modes of hot granulating and cold granulating. The hot dicing is to be cut into small particles by a blade at the moment of exiting the die from the molten material, and the material is cut in a hot state before solidification, so that it is called hot dicing. Cold granulation refers to the process of drawing molten material into long strips after exiting a die, cooling the long strip to form solid, and cutting the solid into granules by a cutter, and is called cold granulation. The hot dicing device has the advantages that the whole device occupies small area, the dicing is uniform, some materials which cannot be pulled into strips cannot be subjected to cold dicing, and only hot dicing can be adopted.

When the traditional hot granulating device is installed, a blade is pre-fixed on a cutter frame, then the whole hot granulating device is fixed with an extruder die mounting plate through 4 bolts on a frame, then the bolts on the cutter frame are slightly loosened, the clearance between the blade and the plane of the die 1 is adjusted, the bolts on the cutter frame are locked after the clearance is adjusted, and the blade on the other side is adjusted by the same method. Therefore, the blade is troublesome to adjust, the gap between the blade and the die is required to be carefully adjusted, most of operation space is limited, the blade adjustment is required to be performed in a heated state of the die, and the operation difficulty is increased, so that the blade is time-consuming, and high requirements are also put forward on the skills of operators.

In view of this, the present utility model has been made.

Disclosure of Invention

The utility model aims to provide a hot granulating device for producing injection molding granules, which can facilitate the disassembly and assembly of an adjusting cutter and solve the problems of time-consuming blade adjustment, high requirement on operators, low cutter adjusting efficiency and short service life of the blade existing in the conventional hot granulating device.

The utility model aims at realizing the following technical scheme:

a hot pelleting apparatus for producing injection molded pellets, comprising:

the cutting device comprises a die, a cutter shaft, a rotary cutter assembly and an elastic adjusting assembly; wherein,

the front end of the die is provided with a granulator connecting port which can be fixedly connected with the extrusion end of the granulator;

the rear end face of the die is a plane, a fixed core shaft hole is arranged in the middle eccentric position of the rear end face, and a plurality of extrusion holes are uniformly distributed on the die around the periphery of the circle center;

the front end of the cutter shaft is fixedly connected with a fixed core shaft hole of the die through threads;

the rotary cutter assembly is movably arranged on the cutter shaft in a penetrating way and can rotate on the cutter shaft under the drive of an external driving device, the front end of the rotary cutter assembly is provided with a blade, the blade corresponds to a plurality of extrusion ports on the rear end surface of the die, and injection molding materials extruded from all the extrusion ports can be cut;

the elastic adjusting component is arranged at the rear end of the cutter shaft and is in elastic contact with the rotary cutter component, and the tightness between the rotary cutter component and the rear end face of the die can be adjusted.

Compared with the prior art, the hot granulating device for producing injection molding granules has the beneficial effects that:

through the fixed mandrel hole connection with arbor through screw thread and bush for the arbor is convenient to be dismantled and assembled, and after the arbor screw thread unscrewed, arbor and rotatory cutter subassembly wholly just have been dismantled, and the clearance environment tool changing under, after the tool setting was adorned, directly by the centre screw of spiral screw import mould can again, elasticity adjusting part behind the slightly adjustment arbor can conveniently adjust rotatory cutter subassembly degree of compressing tightly, and the adjustment process is very quick, convenient, and can guarantee the cutting granulation effect. In addition, the plurality of extrusion ports of the die adopt a concentric circumference staggered arrangement mode, so that the cutting positions of the blades are uniformly distributed along the straight line direction of the cutting edge in the cutting process, the abrasion of the cutting edge caused by repeated cutting of the single position of the blade of the rotary cutter assembly is reduced, and the service life of the blade is prolonged. The device simple structure, easily dismantle, the tool setting, the tool changing is convenient, has shortened the tool setting greatly, the tool changing time, and full blade cutting is favorable to improving the availability factor of grain cutting blade moreover, provides very big facility for mass production.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a hot dicing apparatus according to an embodiment of the present utility model.

Fig. 2 is a schematic side view of a thermal dicing apparatus according to an embodiment of the utility model.

Fig. 3 is a schematic diagram of a die structure of a hot dicing apparatus according to an embodiment of the present utility model.

Detailed Description

The technical solutions in the embodiments of the present utility model are clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model; it will be apparent that the described embodiments are only some embodiments of the utility model, but not all embodiments, which do not constitute limitations of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.

The terms that may be used herein will first be described as follows:

the term "and/or" is intended to mean that either or both may be implemented, e.g., X and/or Y are intended to include both the cases of "X" or "Y" and the cases of "X and Y".

The terms "comprises," "comprising," "includes," "including," "has," "having" or other similar referents are to be construed to cover a non-exclusive inclusion. For example: including a particular feature (e.g., a starting material, component, ingredient, carrier, formulation, material, dimension, part, means, mechanism, apparatus, step, procedure, method, reaction condition, processing condition, parameter, algorithm, signal, data, product or article of manufacture, etc.), should be construed as including not only a particular feature but also other features known in the art that are not explicitly recited.

The term "consisting of … …" is meant to exclude any technical feature element not explicitly listed. If such term is used in a claim, the term will cause the claim to be closed, such that it does not include technical features other than those specifically listed, except for conventional impurities associated therewith. If the term is intended to appear in only a clause of a claim, it is intended to limit only the elements explicitly recited in that clause, and the elements recited in other clauses are not excluded from the overall claim.

Unless specifically stated or limited otherwise, the terms "mounted," "connected," "secured," and the like should be construed broadly to include, for example: the connecting device can be fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms herein above will be understood by those of ordinary skill in the art as the case may be.

The terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. refer to an orientation or positional relationship based on that shown in the drawings, merely for ease of description and to simplify the description, and do not explicitly or implicitly indicate that the apparatus or element in question must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present disclosure.

The hot granulation device provided by the utility model is described in detail below. What is not described in detail in the embodiments of the present utility model belongs to the prior art known to those skilled in the art. The specific conditions are not noted in the examples of the present utility model and are carried out according to the conditions conventional in the art or suggested by the manufacturer. The reagents or apparatus used in the examples of the present utility model were conventional products commercially available without the manufacturer's knowledge.

As shown in fig. 1 and 2, an embodiment of the present utility model provides a hot granulation apparatus for producing injection molded granules, comprising:

the cutting die comprises a die 1, a cutter shaft 2, a rotary cutter assembly and an elastic adjusting assembly; wherein,

the front end of the die 1 is provided with a granulator connecting port which can be fixedly connected with the extrusion end of the granulator;

the rear end face of the die 1 is a plane, a fixed core shaft hole is arranged in the middle eccentric position of the rear end face, and a plurality of extrusion holes are uniformly distributed on the die 1 around the periphery of the circle center;

the front end of the cutter shaft 2 is fixedly connected with a fixed core shaft hole of the die 1 through threads;

the rotary cutter assembly is movably arranged on the cutter shaft 2 in a penetrating way and can rotate on the cutter shaft 2 under the drive of an external driving device, the front end of the rotary cutter assembly is provided with a blade 6, the blade 6 corresponds to a plurality of extrusion ports on the rear end surface of the die 1, and injection molding materials extruded by all the extrusion ports can be cut;

the elastic adjusting component is arranged at the rear end of the cutter shaft 2, is in elastic contact with the rotary cutter component, and can adjust the tightness between the rotary cutter component and the rear end face of the die 1.

Preferably, in the hot dicing apparatus, the rotary cutter assembly includes:

pulley assembly 3, blade carrier 4 and at least one blade 6; wherein,

the belt pulley assembly 3 is movably arranged on the cutter shaft 2 in a penetrating way;

the tool rest 4 is fixedly arranged on the outer periphery of the front end of the belt pulley assembly 3 and can rotate together with the belt pulley assembly 3; preferably, the tool holder 4 is combined with the pulley assembly via a screw opening. The combined belt pulley and the belt pulley can be integrated and rotated together;

the periphery of the cutter rest 4 is provided with at least one blade mounting position, each blade mounting position is fixedly provided with one blade 6, and the blade 6 can be attached to the rear end face of the die 1 and is positioned on a circular path where a plurality of extrusion ports are positioned.

Preferably, in the hot dicing apparatus, each blade mounting position of the blade holder 4 is provided with a blade pressing block 5 and a fixing member 7, and the blade 6 is fixedly mounted on the blade mounting position through the blade pressing block 5 and the fixing member 7. Preferably, the fixing part 7 adopts an inner hexagon screw, so that the cutter pressing block and the cutter blade are conveniently fixed on the cutter rest.

Preferably, in the hot dicing apparatus, two blade mounting positions of the blade holder 4 are provided, and the two blade mounting positions are arranged on the periphery of the blade holder 4 at a distance of 180 degrees;

the number of the blades 6 is two, and each blade 6 is arranged on one blade mounting position. The blade 6 has a sharp cutting edge and can cut the injection molding material extruded from the extrusion port to granulate it.

Preferably, in the hot-granulating device, the whole belt pulley assembly 3 has a frustum structure, and the diameter of the rear end of the belt pulley assembly is larger than that of the front end of the belt pulley assembly;

the rear end of the pulley assembly 3 is provided with a belt groove, which can be connected to a belt of an external driving device.

Preferably, in the hot dicing apparatus, the elastic adjusting assembly includes:

a spring 8, a baffle 9 and an adjusting lock nut 10; wherein,

the spring 8 is arranged at the rear end of the cutter shaft 2 in a penetrating way, and the front end of the spring 8 props against the rear end of the rotary cutter assembly;

the baffle 9 is arranged on the cutter shaft 2 at the rear end of the spring 8 in a penetrating way;

the adjusting lock nut 10 is arranged at the rear end of the cutter shaft 2, and can adjust the position of the baffle plate 9 to adjust the pressure of the spring 8 on the rotary cutter assembly.

Through setting up the elasticity adjusting part of above-mentioned structure, through convenient regulation adjustment spring's clamp force, make blade and bush laminating inseparable, guarantee the cutting effect.

As shown in fig. 3, the die 1 of the device is connected to the extrusion end of the granulator, and is provided with a plurality of extrusion ports, wherein each extrusion port is uniformly distributed along a circular path, and the circular path and the outer circle of the die 1 are concentric circles. When in use, the injection molding material extruded after the mixing of the granulator is extruded through each extrusion port of the port die. The flow distances of the melt at all extrusion ports are equal or differ by 2-3 mm, which is beneficial to uniform discharge at all extrusion ports.

The fixed mandrel hole that the intermediate part of bush 1 set up adopts eccentric setting, can obtain the blade like this when the injection molding material that the cutting extrusion was cut, and the cutting point removes in full blade scope, has avoided the wearing and tearing problem of single position cutting to the blade.

The cutter shaft 2 is connected with the die through a fixed mandrel hole near the center of the die, and the axis line of the cutter shaft 2 is perpendicular to the end face of the die.

Referring to fig. 3, preferably, the number of extrusion holes of the die 1 is 8, and the extrusion holes are uniformly distributed on a circular path concentric with the outer circle of the die 1, so that extrusion and blanking efficiency can be ensured.

Preferably, the hot dicing apparatus further comprises: a drive device and a transmission belt; the power output wheel of the driving device is connected with the rotary cutter assembly through the transmission belt and can drive the rotary cutter assembly to rotate on the cutter shaft 2.

In summary, according to the hot granulating device provided by the embodiment of the utility model, the cutter shaft is connected with the fixed core shaft hole of the die through the threads, so that the cutter shaft is convenient to assemble and disassemble, the cutter shaft and the rotary cutter assembly are integrally disassembled after the cutter shaft threads are unscrewed, the cutter is exchanged in a wide environment, after the cutter is assembled, the cutter is directly screwed into the central screw hole of the die through the threads, the elastic adjusting assembly after the cutter shaft is slightly adjusted, so that the compression degree of the rotary cutter assembly can be conveniently adjusted, the adjusting process is very quick and convenient, and the cutting granulating effect can be ensured. In addition, the plurality of extrusion ports of the die adopt a concentric circumference staggered arrangement mode, so that the cutting positions of the blades are uniformly distributed along the straight line direction of the cutting edge in the cutting process, the abrasion of the cutting edge caused by repeated cutting of the single position of the blade of the rotary cutter assembly is reduced, and the service life of the blade is prolonged. The device simple structure, easily dismantle, the tool setting, the tool changing is convenient, has shortened the tool setting greatly, the tool changing time, and full blade cutting is favorable to improving the availability factor of grain cutting blade moreover, provides very big facility for mass production.

In order to clearly demonstrate the technical scheme and the technical effects provided by the utility model, the hot dicing device provided by the embodiment of the utility model is described in detail below by using specific embodiments.

Example 1

As shown in fig. 1 to 3, the present embodiment provides a hot-granulating apparatus for producing injection-molded granules, comprising: the method comprises the steps of screwing a large thread end of a cutter shaft 2 into a fixed core shaft hole of the inlet die 1 during assembly, wherein the cutter shaft 2, the rotary cutter assembly and the elastic adjusting assembly are arranged on the die; then screwing and tightening the belt pulley assembly 3 of the rotary cutter assembly and the cutter frame 4; the blade 6 is combined with the cutter pressing block 5 and then is mounted on the cutter rest 4, the cutter is pre-locked by a screw serving as a fixing part 7, and the mounting mode of the blade on the other side is the same;

penetrating the cutter frame 4 and the belt pulley assembly 3 into the cutter shaft 2, then lightly rotating the cutter frame 4 to enable the blades 6 on two sides to be in uniform contact with the end face of the die 1, and then locking each screw; the two baffle plates 9 are combined with the spring 8, then the cutter shaft 2 is penetrated, the adjusting nut 10 is screwed on the tail thread of the cutter shaft 2, and the adjusting nut 10 is screwed in and out to adjust the pressing force of the spring 8 until the pressing force is proper.

The belt is sleeved on the belt pulley assembly 3, and the belt motor is started, so that the belt pulley assembly can start to work.

In-process tool changing, can unload adjusting nut 10, spring 8, separation blade 9, belt pulley unit 3, knife rest 4, blade 6 and fixed part 7 all can be dismantled, and the back is adjusted to the below tool changing, tool setting, and whole follow arbor penetrates the installation again, and convenient and fast has greatly improved the work efficiency of operation process tool changing, tool setting.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present utility model should be included in the scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims. The information disclosed in the background section herein is only for enhancement of understanding of the general background of the utility model and is not to be taken as an admission or any form of suggestion that this information forms the prior art already known to those of ordinary skill in the art.

Claims

1. A hot granulation apparatus for producing injection molded granules, comprising:

the rotary cutter comprises a die (1), a cutter shaft (2), a rotary cutter assembly and an elastic adjusting assembly; wherein,

the front end of the die (1) is provided with a granulator connecting port which can be fixedly connected with the extrusion end of the granulator;

the rear end face of the die (1) is a plane, a fixed mandrel hole is arranged in the middle eccentric position of the rear end face, and a plurality of extrusion holes are uniformly distributed on the die (1) around the periphery of the circle center;

the front end of the cutter shaft (2) is fixedly connected with a fixed core shaft hole of the die (1) through threads;

the rotary cutter assembly is movably arranged on the cutter shaft (2) in a penetrating way and can rotate on the cutter shaft (2) under the drive of an external driving device, the front end of the rotary cutter assembly is provided with a blade (6), the blade (6) corresponds to a plurality of extrusion ports on the rear end surface of the die (1), and injection molding materials extruded by all extrusion ports can be cut;

the elastic adjusting component is arranged at the rear end of the cutter shaft (2) and is in elastic contact with the rotary cutter component, and the tightness between the rotary cutter component and the rear end face of the die (1) can be adjusted.

2. The hot pelletizing apparatus for producing injection molded pellets of claim 1, wherein the rotary cutter assembly comprises:

a pulley assembly (3), a blade holder (4) and at least one blade (6); wherein,

the belt pulley assembly (3) is movably arranged on the cutter shaft (2) in a penetrating way;

the tool rest (4) is fixedly arranged on the periphery of the front end of the belt pulley assembly (3) and can rotate together with the belt pulley assembly (3);

the die is characterized in that at least one blade mounting position is arranged on the periphery of the tool rest (4), each blade mounting position is fixedly provided with one blade (6), the blade (6) can be attached to the rear end face of the die (1) and is positioned on a circular path where a plurality of extrusion ports are positioned.

3. The hot-granulating apparatus for producing injection-molded granules as claimed in claim 2, wherein a blade-holding block (5) and a fixing member (7) are provided on each blade-holding position of the blade holder (4), and the blade (6) is fixedly held on the blade-holding position by the blade-holding block (5) and the fixing member (7).

4. The hot-granulating apparatus for producing injection-molded granules as claimed in claim 2, wherein the blade mounting positions of the blade holder (4) are two, and two blade mounting positions are provided on the outer periphery of the blade holder (4) at a spacing of 180 degrees;

the number of the blades (6) is two, and each blade (6) is arranged on one blade mounting position.

5. The hot-granulation apparatus for producing injection-molded granules according to claim 2, characterized in that said pulley assembly (3) is entirely of a frustoconical configuration, with a rear end diameter greater than a front end diameter;

the rear end of the belt pulley assembly (3) is provided with a belt groove which can be connected with a belt of an external driving device.

6. The hot pelletizing apparatus for producing injection molded pellets as claimed in any of claims 1-5, wherein the elasticity adjusting assembly comprises:

a spring (8), a baffle (9) and an adjusting lock nut (10); wherein,

the spring (8) is arranged at the rear end of the cutter shaft (2) in a penetrating way, and the front end of the spring (8) props against the rear end of the rotary cutter assembly;

the baffle (9) is arranged on the cutter shaft (2) at the rear end of the spring (8) in a penetrating way;

the adjusting lock nut (10) is arranged at the rear end of the cutter shaft (2), and the position of the baffle piece (9) can be adjusted to adjust the pressure of the spring (8) on the rotary cutter assembly.

7. The hot granulation apparatus for producing injection molding granules according to any of claims 1 to 5, wherein the number of extrusion openings of said die (1) is 8, uniformly distributed on a circular path concentric with the outer circumference of said die (1);

the flow distances of the melt at all extrusion ports are equal or differ by 2-3 mm.

8. The hot granulation apparatus for producing injection molded granules as claimed in any of claims 1 to 5, further comprising:

a drive device and a transmission belt; wherein,

the power output wheel of the driving device is connected with the rotary cutter assembly through the transmission belt and can drive the rotary cutter assembly to rotate on the cutter shaft (2).