CN-121973351-A - Multi-stage mixed-color type granulating device for flow-pattern color master batch and processing method

CN121973351ACN 121973351 ACN121973351 ACN 121973351ACN-121973351-A

Abstract

The invention relates to the technical field of color master batch production and processing, in particular to a multi-section mixed-color type granulating device and a processing method of a flow-pattern color master batch. According to the invention, the rotary pipe in the material conveying machine is arranged, and the rotary pipe is matched with two feeding ports at the bottom of the material conveying pipe, which are communicated with the grain feeder, so that grain phase master batch can be injected into melt of the screw extruder from the grain feeder at different positions in a segmented manner after rotating, and two different styles of gradual change flow grain and cloud grain effect can be respectively formed by controlling injection time sequence and distribution position.

Inventors

YANG LIQIANG
XU ZUAN
LIANG HONGHUI
WU ZIMEI
LIANG GUOHUA

Assignees

中山市色邦塑料色母有限公司

Dates

Publication Date: 20260505
Application Date: 20260402

Claims (10)

1. The multi-section mixed-color type granulating device for the flow-grain color master batch comprises a screw extruder, wherein a feeding system is arranged on the right side of the screw extruder, and the device is characterized in that the feeding system comprises a material conveying machine and a pair of particle feeders arranged below the material conveying machine, and the particle feeders are used for sectionally injecting grain-phase master batch at two injection points which are distributed at intervals along the axial direction of the screw extruder; The material conveying machine comprises a material conveying pipe, a rotary pipe rotating in the material conveying pipe, a sleeve sleeved on the outer side of a central shaft at the rear end of the rotary pipe and two deflector rods symmetrically arranged at the pipe orifice of the sleeve, wherein the front end of the material conveying pipe is fixedly connected with a first motor through a bolt, and a material conveying auger coaxially connected with the first motor is arranged on the axis of the material conveying pipe; two feeding ports communicated with the grain feeder are formed in the bottom of the conveying pipe, two discharging holes which are arranged oppositely at 180 degrees in the circumferential direction are formed in the pipe wall of the rotating pipe at intervals in an axial direction, and two spiral grooves are formed in the shaft wall of the central shaft at the rear end of the rotating pipe; The sleeve is moved backwards at fixed distance, the deflector rod slides along the spiral groove and drives the rotary tube to rotate, so that the conducting states of the two discharging holes and the two feeding holes are exchanged alternately, the two feeding holes are communicated with the corresponding particle feeders alternately respectively, the injection time sequence and the distribution position of the grain phase master batch in the melt of the screw extruder are changed, and the form of the flow grain is regulated and controlled.
2. The multi-stage color mixing type granulating device of the flow mark color master batch of claim 1, wherein the feeding system further comprises a fixing box for fixing a pair of particle feeders and fixedly connected to the top surface of a bottom chassis of the screw extruder through bolts, and a driver arranged in the fixing box.
3. The multi-section mixed-color type granulating device for the flow-streak color master batch of claim 2, wherein a rotating groove for rotating a rotating pipe is formed in the inner wall of the pipe body of the material conveying pipe, a central shaft at the rear end of the rotating pipe extends to the rear end of the material conveying pipe, the deflector rod is fixedly connected to the pipe orifice of the sleeve through a bolt, and the inner side end part of the deflector rod extends to the inside of the sleeve.
4. The multi-segment color mixing type granulating device for flow mark color master batch of claim 3, wherein the material transporting machine further comprises a hopper which is clamped and fixed at the top of the pipe wall at the front end of the material transporting pipe, and the rear end of the central shaft of the material transporting auger is rotationally connected with the rotating pipe.
5. The multi-segment color mixing type granulating device of the flow mark color master batch of claim 4, wherein the material conveying machine further comprises a bending frame which is welded and fixed on the outer side of the sleeve and driven by the air cylinder, and the end part of the telescopic rod of the bending frame is clamped and fixed at the bending position of the bending frame.
6. The multi-segment color mixing type granulating device of the flow mark color master batch of claim 5, wherein the particle feeder comprises a particle feeding pipe fixedly connected to the right end side wall of the fixed box through a bolt, a material receiving pipe welded and fixed to the top end of the right end pipe wall of the particle feeding pipe and communicated with the material feeding port, and a particle feeding auger rotatably connected in the particle feeding pipe, and the left end flange of the particle feeding pipe is connected to the pipe orifice of the extrusion pipe of the screw extruder.
7. The multi-segment color mixing type granulating device of the flow mark color master batch of claim 6, wherein the driver comprises a second motor fixedly connected to the inner wall of the fixed box through bolts, a rotating shaft coaxially connected to an output shaft of the second motor, a transmission rod sleeved on the outer side of the rotating shaft in a sliding manner, two groups of shifting blocks which are distributed at intervals along the axial direction and are elastically embedded on the rod wall of the transmission rod, and a group of transmission components corresponding to the positions of a pair of particle feeders.
8. The multi-segment color mixing type granulating device of the moire color master batch of claim 7, wherein a plurality of outer convex strips are integrally formed on the outer wall of the rotating shaft, a slot matched with the rotating shaft is formed at the front end of the transmission rod, a groove for a shifting block to slide is formed in the rod wall of the transmission rod, arc-shaped chamfer angles are formed at the front end and the rear end of the shifting block, a plurality of springs are welded on the bottom surface of the shifting block, the inner side end parts of the springs are adhered and fixed with the groove wall of the groove of the transmission rod, and the rear end of the transmission rod is rotatably connected to the bottom end of the bending frame and synchronously moves along with the bending frame.
9. The multi-section mixed-color type granulating device of the flow mark color master batch of claim 8, wherein the transmission assembly comprises a transmission pipe sleeved on the outer side of the transmission rod in a sliding manner, a main bevel gear tightly sleeved on the outer wall of the transmission pipe, an auxiliary bevel gear vertically meshed with the main bevel gear and two symmetrically distributed fixing plates for rotating and connecting the transmission pipe, a pair of through grooves matched with the shifting block in size are formed in the pipe wall of the transmission pipe in a penetrating manner, the auxiliary bevel gear is tightly sleeved on the end part of a central shaft of a particle conveying auger in the particle conveying device, and the fixing plates are fixedly connected to the inner wall of the fixing box through bolts.
10. A multi-stage color mixing type granulation processing method of a flow mark color master batch, using the multi-stage color mixing type granulation device of the flow mark color master batch according to claim 9, characterized by comprising the following steps: s1, adding basic phase resin and an auxiliary agent thereof into a feed hopper of a screw extruder according to a formula proportion, and adding solid grain phase master batches subjected to pre-granulation treatment into a hopper in a feeding system; s2, starting a screw extruder, and conveying the base phase resin forwards along the extruder barrel after melting and plasticizing to form a continuous base phase melt stream; S3, starting a first motor, driving a material conveying auger to rotate, and conveying grain phase master batches put into a material conveying pipe backwards along the material conveying pipe, wherein at the moment, a front discharging hole on the material conveying pipe in the material conveying machine and a front material feeding port of the material conveying pipe are in a conducting state, and the grain phase master batches are put into a grain feeder at the front side through the material feeding port; S4, synchronously starting a second motor, driving a transmission rod to rotate through a rotating shaft, clamping a poking block at the upper front end of the transmission rod into a through groove of a front side transmission pipe under the action of a spring, driving the transmission pipe to rotate, driving a particle feeding auger in a front side particle feeder to rotate through meshing transmission of a main bevel gear and an auxiliary bevel gear, continuously conveying grain phase master batches to a position, close to a machine head end, in a screw extruder, and fully mixing and stretching the grain phase master batches with a basic phase melt to form a gradual flow grain effect; S5, switching injection positions, namely when the injection positions are required to be switched to change the grain form, driving the bending frame to drive the sleeve to move backwards at a certain distance through the air cylinder, enabling the deflector rod to slide along the spiral groove and driving the rotating pipe to rotate 180 degrees, completing switching of the conduction relation between the two feeding ports and the two grain feeders, and putting grain phase master batches into the grain feeders at the rear side in turn; S6, simultaneously, the bending frame drives the transmission rod to synchronously move, so that a shifting block at the upper rear side of the transmission rod is clamped into a through groove of a transmission pipe corresponding to the rear-side grain feeder under the action of a spring, a grain feeding auger in the rear-side grain feeder is driven to rotate, grain phase master batches are continuously conveyed to a position, close to a feeding end, in the screw extruder, and a cloud grain effect is formed after the grain phase master batches are mixed with a basic phase melt for a short time; S7, forming a melt with a natural flow grain effect at the front end inside the screw extruder, extruding the melt into strips through a die hole of a machine head, shaping by a cooling water tank, and drawing and granulating by a granulator to obtain a finished product of the flow grain color master batch.

Description

Multi-stage mixed-color type granulating device for flow-pattern color master batch and processing method Technical Field The invention relates to the technical field of masterbatch production and processing, in particular to a multi-stage mixed-color type granulating device and a processing method of a flow-pattern masterbatch. Background The flow grain color master batch is a functional master batch widely applied to decorative coloring of plastic products, and natural flow textures are formed by incompletely mixing two or more color resins in a molten state. The preparation process needs to accurately control the melting temperature, viscosity difference and mixing shearing strength of different color phase resins, so that the grain phase forms clear, continuous and layered flow grain effect in the basic phase melt, is widely applied to surface decoration of high-end plastic products such as cosmetic packaging, household appliance shells, automobile interior trim, PET (polyethylene terephthalate) bottles and the like, can replace the traditional electroplating spraying process while improving the visual aesthetic feeling of the products, and meets the requirement of green environment-friendly development. The patent with the application number of CN202221653103.4 discloses a granulating device for producing color master batches, which comprises a stirring mechanism, a conveying mechanism, a granulating mechanism and a cooling mechanism, wherein the stirring mechanism comprises a stirring cylinder, the conveying mechanism comprises a conveying cylinder, the stirring cylinder is communicated with the conveying cylinder, and the granulating mechanism is positioned at a discharge hole of the conveying cylinder. Not only can the cut color master batch be cooled, but also the cut color master batch can be blown off rapidly, the adhesion of the cut color master batch can be effectively prevented from agglomerating, and the working efficiency is improved. However, in the existing masterbatch granulating device, the grain phase masterbatch is usually injected into the melt from a single position, and the injection time sequence and the distribution position cannot be changed according to the process requirement, so that the flow grain form is single and a diversified effect is difficult to form. In view of this, we propose a multi-stage mixed-color granulating device and processing method of the flow-streak color master batch. Disclosure of Invention The invention aims to provide a multi-stage mixed-color granulating device and a processing method for a flow-pattern color master batch, which are used for respectively forming flow-pattern effects of two different styles of gradual change flow patterns and cloud patterns by controlling injection time sequences and distribution positions so as to solve the problems in the background technology. In order to achieve the above object, in one aspect, the present invention provides the following technical solutions: The multi-section mixed-color type granulating device for the flow-grain color master batch comprises a screw extruder, wherein a feeding system is arranged on the right side of the screw extruder, the feeding system comprises a material conveying machine and a pair of particle feeders arranged below the material conveying machine, and the particle feeders are used for sectionally injecting grain-phase master batch at two injection points which are axially and alternately distributed along the screw extruder; the material conveying machine comprises a material conveying pipe, a rotary pipe rotating in the material conveying pipe, a sleeve sleeved on the outer side of a central shaft at the rear end of the rotary pipe, and two deflector rods symmetrically arranged at the pipe orifice of the sleeve, wherein the front end of the material conveying pipe is fixedly connected with a first motor through a bolt, and a material conveying auger coaxially connected with the first motor is arranged on the axis of the material conveying pipe; two feeding ports communicated with the grain feeder are formed in the bottom of the conveying pipe, two discharging holes which are arranged oppositely at 180 degrees in the circumferential direction are formed in the pipe wall of the rotating pipe at intervals in an axial direction, and two spiral grooves are formed in the shaft wall of the central shaft at the rear end of the rotating pipe; In the above arrangement, the sleeve is moved backwards at fixed distance, the deflector rod slides along the spiral groove and drives the rotary tube to rotate, so that the conducting states of the two discharging holes and the two feeding holes are alternately interchanged, and the two feeding holes are respectively and alternately communicated with the corresponding particle feeder, so that the injection time sequence and the distribution position of the grain phase master batch in the melt of the screw extruder are changed, and the form of