A high-temperature thermal mixing machine for multi-color plastic processing and a working method thereof

Abstract

The present application relates to a kind of high-temperature thermal mixing machine for multicolor plastic processing, comprising: a plurality of color plastics are mixed in mixing cavity;With the upper part of mixing cavity communication feeding hopper;With the lower part of mixing cavity communication discharging hopper;Rotary knife mechanism is penetrated into the mixing cavity, wherein the rotary knife mechanism includes spindle, and a plurality of moving knife groups are distributed along the axial direction around the spindle;The moving knife group includes moving knife fixed strip, and a group of moving knives is vertically fixed on it at intervals.The present application is used for high-speed shearing mixing of different color plastics in high-temperature state after melting, but will not make material produce completely mixed uniform condition, finally obtains the interlaced double or multicolor plastic mixture, reaches the effect that different color plastics are mixed and color and color separation.

Description

TECHNICAL FIELD

[0001] The application relates to a high-temperature hot mixing machine for multi-color plastic processing and a working method thereof, and belongs to the technical field of plastic processing equipment. BACKGROUND

[0002] With the development of society, people are increasingly dependent on plastics, and plastic products are everywhere. Plastics are divided into two categories: thermosetting and thermoplastic. Thermoplastic is a kind of plastic with the widest application. Thermoplastic resin is used as the main component, and various additives are added. Under certain temperature conditions, the thermoplastic resin is melted and plasticized, and then a plastic product is obtained through a molding process. In the paving material or in the daily consumer goods, in order to make the plastic product processed to form a pattern similar to that of marble, different colored plastic particles need to be mixed at a specific high temperature to obtain double or multi-colored plastic particles, and then a molding process is performed to obtain paving materials or plastic products for daily life with marble texture.

[0003] In the prior art, a single-screw extruder is used to mix, plasticize and cut and granulate different colored plastic particles to obtain double or multi-colored plastic particles. The processing capacity is small, the working efficiency is low, and the mixing is too uniform in the subsequent molding process, resulting in an unattractive marble pattern and poor effect, and unstable quality. SUMMARY

[0004] The application aims to provide a high-temperature hot mixing machine for multi-color plastic processing, which is used for high-speed shearing mixing of molten plastic particles of different colors in a high-temperature state without completely mixing the materials, so as to obtain a double or multi-colored plastic mixture in an interwoven state, achieve the effect of mixing and color separation of different colored plastics, and have high production efficiency and large processing capacity. In the subsequent molding process, the material can achieve a kind of effect of pulling a wire between colors, form a pattern closer to natural marble, have good sensory effect, and have stable pattern quality.

[0005] The application adopts the following technical scheme:

[0006] A high-temperature hot mixing machine for multi-color plastic processing comprises a mixing cavity 2 in which different colored plastics are mixed, a feeding hopper 1 in communication with the upper part of the mixing cavity, a discharging hopper 7 in communication with the lower part of the mixing cavity, and a rotating cutter mechanism 3 penetrating into the mixing cavity. The rotating cutter mechanism 3 comprises a main shaft 10, and a plurality of dynamic cutter groups 11 distributed around the main shaft 10 in the axial direction. The dynamic cutter group 11 comprises a dynamic cutter fixing strip 13 and a group of dynamic cutters 16 vertically fixed thereon at intervals.

[0007] Preferably, a plurality of dynamic cutter mounting grooves 12 corresponding to the dynamic cutter groups 11 are formed in the main shaft 10 in the axial direction, and the dynamic cutter mounting grooves 12 have dovetail groove structures.

[0008] Preferably, the moving knives 16 are in a flattened structure, with bidirectional cutting edges, and the knife faces are perpendicular to the axial direction of the main shaft 10.

[0009] Preferably, the driving mechanism 5 is further included, which drives the rotating knife mechanism 3 to rotate through chain transmission or belt transmission.

[0010] Preferably, the moving knives 16 on the adjacent two moving knife groups 11 are arranged in a radial direction of the main shaft.

[0011] Preferably, the screen assembly 4 is further included, which is in a circular arc surface shape and is arranged below the rotating knife mechanism 3 of the mixing cavity.

[0012] Preferably, the rack 6 serving as a support base of the entire device is further included.

[0013] Preferably, the mixing cavity 2 is composed of an upper cavity body 8 and a lower cavity body 9 which are detachably connected.

[0014] Preferably, the moving knife fixing strip 13 is provided with a corresponding knife seat mounting groove 14, and the knife seat mounting groove 14 is in a dovetail groove structure; each moving knife group 11 further includes a knife seat 15, which is fixed on the moving knife fixing strip 13 through the knife seat mounting groove 14, and each moving knife 16 is detachably mounted on the knife seat 15.

[0015] Further, each moving knife fixing strip 13 is inlaidly fixed in the moving knife mounting groove 12, and each knife seat 15 is inlaidly fixed in the knife seat mounting groove 14; each moving knife 16 has bidirectional cutting edges, which are fixedly mounted on the knife seat 15 through bolts.

[0016] A working method of the high-temperature thermal mixing machine for multi-color plastic processing according to any one of the above-mentioned embodiments is provided, in which the different colors of molten plastics at a set high temperature enter the mixing cavity 2 through the feeding hopper, the rotating knife mechanism 3 in the mixing cavity 2 is driven to rotate by the driving mechanism 5, and in the high-speed operation process of the rotating knife mechanism 3, the materials are subjected to high-speed shearing stirring and uniform dispersion mixing in a high-temperature state, and then pass through the screen assembly 4 and are discharged from the discharging hopper to a subsequent forming process for manufacturing floor materials or daily life plastic products with natural marble patterns.

[0017] The present application has the following beneficial effects:

[0018] 1) The humanized design for installation and use is fully considered, the structure is simple and reasonable, the tool is convenient to replace, and the maintenance and cleaning are convenient and without dead angles.

[0019] 2) The special designed rotary knife mechanism, in the process of high speed rotation, carries out fast shearing stirring, uniform dispersion mixing to the molten different color plastics in high temperature state, and the shearing mixed material passes through the screen and is discharged. Such design has many mixing points, can make the material fast mixing and fast discharging in a short time, has no dead angle and no material accumulation, clean unloading, low loss, large processing capacity, high working efficiency.

[0020] 3) The high temperature thermal mixing machine does not make the material completely mixed and uniform in use, finally can obtain the double color or multi color plastic mixture in interlaced shape, achieves the effect that different color plastics are mixed and color separated, and the prepared material can achieve the effect that there is a kind of wire drawing between colors in subsequent forming process, forms the pattern closer to natural marble, has good sensory effect, and the pattern quality is stable.

[0021] 4) The rotary knife mechanism is provided with a plurality of two-way blade edges, such design has many shearing points, good mixing effect and high efficiency; in addition, the dynamic knife group on the rotary knife mechanism adopts the installation mode of dovetail groove type pulling type, and the dynamic knife is installed and fixed through the knife seat, such design structure is safe and reliable, convenient to disassemble, maintain and clean. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the appearance perspective view of the high temperature thermal mixing machine for multi color plastic processing.

[0023] Figure 2 It is the sectional view of the high temperature thermal mixing machine for multi color plastic processing.

[0024] Figure 3 It is the structure view of the rotary knife mechanism.

[0025] Figure 4 It is the shaft end view of the rotary knife mechanism.

[0026] Figure 5 It is the structure view of the dynamic knife fixing strip.

[0027] Figure 6 It is the dynamic knife installation structure view.

[0028] Figure 7 It is the structure view of the dynamic knife.

[0029] Figure 8 It is the effect diagram of the prior art that different color plastic particles are mixed and stirred by using single screw extruder, gradually plasticized, and too uniform in subsequent forming process, resulting in that the marble pattern is not beautiful enough and the effect is poor.

[0030] Figure 9The high-temperature hot mixing machine for multi-color plastic processing is used to rapidly shear, stir, uniformly disperse and mix different colors of molten plastics at a high temperature, and the marble pattern effect schematic diagram is created after shearing and mixing and discharging through a screen.

[0031] In the figure: 1 - upper hopper; 2 - mixing chamber; 3 - rotary knife mechanism; 4 - screen assembly; 5 - driving mechanism; 6 - frame; 7 - lower hopper; 8 - upper cavity; 9 - lower cavity; 10 - main shaft; 11 - moving knife group; 12 - moving knife mounting groove; 13 - moving knife fixing strip; 14 - knife seat mounting groove; 15 - knife seat; 16 - moving knife. DETAILED DESCRIPTION

[0032] The application will be further described below in combination with the drawings and specific embodiments.

[0033] Referring to Figures 1-2 The embodiment provides a high-temperature hot mixing machine for multi-color plastic processing, which specifically comprises an upper hopper 1, a mixing chamber 2, a rotary knife mechanism 3, a driving mechanism 5, a screen assembly 4, a frame 4 and a lower hopper 7.

[0034] The upper hopper 1 is arranged above the mixing chamber 2 and communicates with the mixing chamber 2, the mixing chamber 2 and the driving mechanism 5 are fixedly installed on the frame 6, and the lower hopper 7 is arranged below the mixing chamber 2 and communicates with the mixing chamber 2.

[0035] As shown in Figure 2 The mixing chamber 2 is of an openable structure and is connected by an upper cavity 8 and a lower cavity 9, when it is necessary to clean and maintain the inside of the mixing chamber 2, the upper cavity 8 is opened, so that the inside of the mixing chamber 2 can be easily cleaned, maintained and replaced with a cutter, the cleaning and maintenance are convenient, and there is no dead angle; the rotary knife mechanism 3 is arranged in the mixing chamber 2, the screen assembly 4 is arranged below the rotary knife mechanism 3, the rotary knife mechanism 2 is in transmission connection with the driving mechanism 5, and the driving mechanism 5 is mainly a motor and is in transmission through a belt.

[0036] As shown in Figures 3-7As shown, the rotary knife mechanism 3 includes a main shaft 10 and a plurality of moving knife groups 11; the main shaft 10 can be driven to rotate, the plurality of moving knife groups 11 are arranged around the axis of the main shaft, and are inserted on the main shaft 10; a plurality of moving knife installation grooves 12 corresponding to the moving knife groups 11 are formed on the main shaft 10 in the axial direction, and the moving knife installation groove 12 is a dovetail groove structure; each moving knife group 11 includes a knife seat 15, a moving knife 16 detachably installed on the knife seat 15, and a moving knife fixing strip 13; the moving knives 16 are arranged in the axial direction, and the moving knives 16 on any adjacent two moving knife groups 11 are arranged in the radial direction of the main shaft; each moving knife fixing strip 13 is inlaid and fixed on the moving knife installation groove 12, a plurality of knife seat installation grooves 14 corresponding to the moving knives 16 are formed on each moving knife fixing strip 13, the knife seat installation groove 14 is a dovetail groove structure, and each knife seat 15 is inlaid and fixed on the knife seat installation groove 14; each moving knife 16 has a bidirectional blade edge, which is fixed and installed on the knife seat 15 by bolts.

[0037] Working principle: different colors of molten plastics enter the mixing cavity 2 through the feeding hopper under a certain high temperature, the rotary knife mechanism 3 in the mixing cavity 2 is driven to rotate by the driving mechanism 5, and the material is subjected to high-speed shearing stirring and uniform dispersion mixing under high temperature in the high-speed rotation process of the rotary knife mechanism 3, and then is discharged from the discharge hopper to the subsequent forming process through the screen assembly 4, for manufacturing paving materials with natural marble patterns or plastic products for daily life.

[0038] Figure 2 is a schematic diagram of the effect of the prior art. Figure 8 Figure 2 is a schematic diagram of the effect of the prior art. Figure 9 Figure 3 is a schematic diagram of the effect of the high-temperature thermal mixing machine for processing multi-color plastics according to the present application.

[0039] The present application is used for high-speed shearing mixing of different colors of molten plastics under high temperature, but will not cause complete mixing and uniformity of the materials, and finally obtains a double-color or multi-color plastic mixture in an interwoven state, achieves the effect of mixing and color separation of different colors of plastics, has high production efficiency and large processing capacity, and the materials produced can achieve a kind of wire-drawing effect between colors in the subsequent forming process, form a pattern closer to natural marble, have good sensory effect, and the pattern quality is stable.

[0040] The above is the preferred embodiment of the present application, and various transformations or improvements can be made by those skilled in the art on the basis of the above, as long as the transformations or improvements do not deviate from the general concept of the present application, and the transformations or improvements should belong to the scope of protection of the present application.

Claims

1. A working method of a high-temperature hot mixer for multi-color plastic processing, characterized in that, The high-temperature hot mixer for multi-color plastic processing comprises a mixing cavity (2) in which a plurality of colors of plastic are mixed, an upper hopper (1) in communication with the upper part of the mixing cavity, a lower hopper (7) in communication with the lower part of the mixing cavity, and a rotating knife mechanism (3) penetrating into the mixing cavity, wherein the rotating knife mechanism (3) comprises a main shaft (10) around which a plurality of dynamic knife groups (11) are distributed in the axial direction; the dynamic knife group (11) comprises a dynamic knife fixed strip (13) and a group of dynamic knives (16) vertically fixed thereon at intervals; and further comprises a screen assembly (4) in the shape of a circular arc surface, which is arranged below the rotating knife mechanism (3) of the mixing cavity. Different colors of plastic melted at a set high temperature enter the mixing cavity (2) through the upper hopper, and the rotating knife mechanism (3) in the mixing cavity (2) is driven to rotate by a driving mechanism (5). During the high-speed operation of the rotating knife mechanism (3), the material is subjected to high-speed shearing stirring and uniform dispersion mixing in a high-temperature state, and then passes through the screen assembly (4) and is discharged from the lower hopper to the subsequent forming process for making floor materials with natural marble patterns or plastic products for daily life.

2. The working method of the high-temperature hot mixer for multi-color plastic processing as described in claim 1, characterized in that: A plurality of dynamic knife installation grooves (12) corresponding to the dynamic knife groups (11) are formed on the main shaft (10) in the axial direction, and the dynamic knife installation groove (12) is in the dovetail groove structure.

3. The working method of the high-temperature hot mixer for multi-color plastic processing as described in claim 1, characterized in that: The dynamic knife (16) is in a flat structure and has a bidirectional blade edge, and the knife surface is perpendicular to the axial direction of the main shaft (10).

4. The working method of the high-temperature hot mixer for multi-color plastic processing as described in claim 1, characterized in that: Further comprising a driving mechanism (5) for driving the rotating knife mechanism (3) to rotate through chain transmission or belt transmission.

5. The method of claim 1, wherein the high-temperature thermal mixer for multi-color plastic processing is operated by: The dynamic knives (16) on the adjacent two dynamic knife groups (11) are arranged in a radial offset manner along the main shaft. ​ 6. The method of claim 1, wherein the high-temperature thermal mixer for multi-color plastic processing is operated by the steps of: Further comprising a rack (6) as the support base of the entire device.

7. The working method of the high-temperature hot mixer for multi-color plastic processing as described in claim 1, characterized in that: The mixing cavity (2) is composed of an upper cavity body (8) and a lower cavity body (9) which are detachably connected.

8. The working method of the high-temperature hot mixer for multi-color plastic processing as described in claim 2, characterized in that: A corresponding knife seat installation groove (14) is arranged on the dynamic knife fixed strip (13), and the knife seat installation groove (14) is in the dovetail groove structure; each dynamic knife group (11) further comprises a knife seat (15) which is fixed on the dynamic knife fixed strip (13) through the knife seat installation groove (14), and each dynamic knife (16) is detachably installed on the knife seat (15).

9. The method of claim 8, wherein the high-temperature thermal mixer is a multi-color plastic processing high-temperature thermal mixer. Each dynamic knife fixed strip (13) is inlaid and fixed in the dynamic knife installation groove (12), and each knife seat (15) is inlaid and fixed in the knife seat installation groove (14); each dynamic knife (16) has a bidirectional blade edge which is fixed on the knife seat (15) by bolts.

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