CN115139492A

CN115139492A - Mold and method for processing automotive plastic interior trim part

Info

Publication number: CN115139492A
Application number: CN202210933229.5A
Authority: CN
Inventors: 刘娜娜; 潘航
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-08-04
Filing date: 2022-08-04
Publication date: 2022-10-04

Abstract

The invention discloses a mold and a method for processing an automotive plastic interior trim part, wherein the mold comprises a support base, a mold rack and two forming molds, wherein the support base is arranged at the rear side of the mold rack; a hot melting cylinder is fixedly mounted at the top end of the supporting base, a storage hopper is mounted in the middle of the hot melting cylinder, one end of the hot melting cylinder extends into the die rack, and an injection tube is arranged at the top end of the hot melting cylinder extending into the die rack; when one forming die moves to the lower part of the telescopic pipe to fill plastic, the other forming die is inevitably positioned below the air inflation assembly at any one side of the two sides of the telescopic pipe, so that the plastic is filled in the other forming die, and the continuous production and processing of firstly filling the plastic and then blowing the plastic are realized, thereby effectively improving the production efficiency, saving the time and improving the yield.

Description

Mold and method for processing automotive plastic interior trim part

Technical Field

The invention relates to the technical field of building construction, in particular to a mold and a method for processing an automotive plastic interior trim part.

Background

Automotive interior mainly indicates the automobile product that the inside repacking of car used, involves the square face of car inside, for example car steering wheel cover, car cushion, car callus on the sole, car perfume, car pendant, inside goods of furniture for display rather than for use, containing box etc. all are automotive interior products.

As the automobile interior decoration in our country has certain decoration, the automobile interior decoration is generally called as automobile interior decoration in the industry. The existing automotive interior parts have not only a decoration function, but also very rich functionality, safety and engineering attributes related to the automotive interior parts, so that the automotive interior parts are made of different materials, such as plastic interior parts, metal interior parts, alloy interior parts, rubber interior parts, ceramic interior parts and the like. The invention mainly adopts moulding production for the production of plastic interior parts, and discloses a forming die of automobile plastic interior parts aiming at the problem that the existing forming die of the automobile plastic interior parts cannot quickly cool the formed automobile plastic interior parts, so that the production efficiency is low, wherein the forming die comprises a water tank, a lower die is arranged in the middle of the outer top wall of the water tank, two symmetrical and vertically arranged support columns are welded on the outer top wall of the water tank and are respectively positioned on two sides of the lower die, a horizontally arranged lifting plate is movably sleeved on the outer ring of the two support columns above the lower die, an upper die is arranged in the middle of the bottom wall of the lifting plate, a plurality of first heat dissipation grooves are equidistantly formed in the bottom wall of the lower die, and first heat dissipation fins which are vertically arranged are fixedly sleeved in the first heat dissipation grooves.

However, the forming die for the automotive plastic interior trim part still has some defects in the actual production process, and the specific defects are as follows:

traditionally, automotive plastic interior trim part mould is in actual course of working, and mould shaping speed is slow, and is very low to batch continuity production efficiency down, and output is low, is difficult to satisfy the actual production demand.

Therefore, it is desirable to provide a mold and a method for processing plastic interior trim parts of automobiles.

Disclosure of Invention

In view of this, the present invention provides a mold for processing a plastic interior trim part of an automobile, so as to solve the problems that in the conventional process of actually processing a mold for a plastic interior trim part of an automobile, the mold forming speed is slow, the batch continuous production efficiency is very low, the yield is low, and the actual production requirements are difficult to meet.

In order to achieve the purpose, the invention is realized by the following technical scheme:

a processing mold for an automotive plastic interior trim part comprises a supporting base, a mold rack and two forming molds, wherein the supporting base is arranged on the rear side of the mold rack;

a hot melting cylinder is fixedly installed at the top end of the supporting base, a storage hopper is installed in the middle of the hot melting cylinder, one end of the hot melting cylinder extends into the mold rack, an injection cylinder is arranged at the top end of the hot melting cylinder extending into the mold rack, a telescopic pipe is arranged at the bottom end of the injection cylinder and is arranged above the two forming molds, and an inflation assembly is arranged on each of the left side and the right side of the injection cylinder;

and the two forming dies slide in a reciprocating manner left and right below the telescopic pipe.

As a preferred technical scheme of the invention, the hot melting cylinder comprises a particle conveying cavity arranged inside the hot melting cylinder and a hot melting cavity communicated with the particle conveying cavity, a dragon-like roller is rotatably connected in the particle conveying cavity, a first servo motor is fixedly installed outside the hot melting cylinder, one end of the dragon-like roller is fixedly connected with an output shaft of the first servo motor outside the hot melting cylinder, the other end of the dragon-like roller extends into the hot melting cavity, a transmission shaft is fixedly installed at the top end of the dragon-like roller extending into the hot melting cavity, the top end of the transmission shaft is rotatably connected to a transmission shaft support through a rolling bearing, and the transmission shaft support is arranged in the hot melting cavity.

As a preferred technical scheme of the invention, the middle part of the injection tube is provided with a mixing cavity, the mixing cavity is communicated with the hot melting cavity, the bottom of the mixing cavity is provided with a material conveying cavity, and the top end of the telescopic tube is connected in the material conveying cavity in a sliding manner.

As a preferred technical scheme of the invention, an ear plate is fixedly installed in the middle of the outer wall of the telescopic pipe, an air cylinder is fixedly installed at the bottom end of the hot melting cylinder, a piston rod extends downwards from the air cylinder, the bottom end of the piston rod of the air cylinder is fixedly connected with the ear plate, an injection needle is arranged at the bottom end of the telescopic pipe, and a liquid delivery cavity communicated with the liquid delivery cavity and penetrating through the injection needle is formed in the inner wall of the liquid delivery cavity.

As a preferred technical scheme of the invention, the injection needle is of a circular tube structure, the bottom end of the injection needle is of a conical flat structure, and the bottom end surface of the injection needle is an arc-shaped surface.

As a preferred technical scheme of the invention, each forming die comprises a front die shell and a rear die shell which are attached to each other, the front die shell and the rear die shell of each forming die are connected to a second sliding frame in a sliding manner, the bottom end of the second sliding frame is fixed to a first sliding frame, the bottom end of the first sliding frame is connected to a sliding frame in a sliding manner, and two ends of the sliding frame are fixed to the inner wall of a die frame;

the inner wall of the die rack is rotatably connected with a threaded screw rod, the bottom end of the first sliding rack is provided with a screw rod sleeve, the screw rod sleeve at the bottom end of the first sliding rack is in threaded connection with the threaded screw rod, the outer side of the die rack is fixedly provided with a second servo motor, and an output shaft of the second servo motor is fixedly connected with the threaded screw rod.

As a preferred technical solution of the present invention, the front mold shell and the rear mold shell are assembled and combined into one group, and the front mold shell and the rear mold shell are respectively provided with a corresponding cavity, a first sliding rack is fixedly installed at the bottom end of the front mold shell of each forming mold, a second sliding rack is fixedly installed at the bottom end of the rear mold shell of each forming mold,

and a first gear is meshed and connected between the second sliding rack and the first sliding rack, the first gear is installed on an output shaft of a third servo motor, and the third servo motor is fixed at the bottom end of the first sliding frame.

As a preferred technical scheme of the present invention, the top end of the front mold shell and the top end of the rear mold shell are respectively provided with a neck cavity, the top end of each neck cavity is respectively provided with a sliding groove, each sliding groove is slidably connected with a brake breaking knife, the top end of the brake breaking knife slidably connected in the sliding groove is provided with an extrusion spring, and the top ends of the two brake breaking knives are respectively provided with a cutting edge with an inclined plane.

As a preferable technical scheme, the inflation assembly comprises a second cylinder fixed on the mold frame, a piston rod extends downwards from the second cylinder, an inflation nozzle is fixed at the bottom end of the piston rod of the second cylinder, the structure of the inflation nozzle is the same as that of the injection needle, and an air inlet pipe communicated with an external air source is arranged outside the inflation nozzle.

The invention has the beneficial effects that:

1. according to the invention, the two forming molds are arranged on the mold rack and slide synchronously, when one forming mold moves to the lower part of the telescopic pipe for plastic injection, the other forming mold is inevitably positioned below the air inflation assembly at any one of two sides of the telescopic pipe, so that the other forming mold is inevitably inflated when one forming mold is used for plastic injection, and thus the uninterrupted continuous production and processing of firstly injecting glue and then blowing molding are realized, the production efficiency is effectively improved, the time is saved, and the yield is improved.

2. When the injection needle below the telescopic tube extends into the cavity of the forming die and is injected with glue, and the injection needle is pulled out from the neck cavity of the forming die, the plastic brake at the bottom of the injection needle is broken through the brake breaking knives on the top surface of the front mould shell and the top surface of the rear mould shell of the forming die to tightly brake the middle elastic part, so that the plastic is stopped at the position of the neck cavity.

3. The bottom of the injection needle is arc-shaped, the bottom of the injection needle is provided with the inclined conical surface which is matched with the top surfaces of the gate breaking knives, the inclined surfaces of the top surfaces of the gate breaking knives and the blade inclined surfaces of the gate breaking knives are utilized, the arc-shaped bottom of the injection needle can move downwards from the top ends of the blades of the two gate breaking knives, the blade inclined surfaces and the gate breaking knives are pushed to be scattered towards two sides, the resistance of the injection needle entering a neck cavity downwards is reduced, and the rapidness and the smoothness of glue pouring action are improved.

In short, this application technical scheme utilizes coherent and compact structure to solve tradition, in the actual course of working, mould shaping speed is slow in the automotive plastics interior trim part mould, and is very low to batch continuity production efficiency, and output is low, is difficult to satisfy the actual production demand.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims thereof.

Drawings

FIG. 1 is a first schematic view of a three-dimensional structure of the present invention with a mold mounted on a mold frame;

FIG. 2 is a schematic view of a second three-dimensional structure of the mold of the present invention mounted on a mold frame;

FIG. 3 is a schematic left-side sectional view of the present invention;

FIG. 4 is an enlarged view of FIG. 3 at C according to the present invention;

FIG. 5 is a schematic view of the construction of the drive shaft support of the present invention within a heat stake chamber;

FIG. 6 is a front view of the mold of the present invention mounted on a mold frame;

FIG. 7 is an enlarged schematic view of FIG. 2 at A in accordance with the present invention;

FIG. 8 is an enlarged schematic view of the structure at B in FIG. 3;

FIG. 9 is a flowchart illustrating steps of a method for manufacturing a plastic interior trim part for a vehicle according to the present invention;

in the figure: 1. a support base; 2. a storage hopper; 3. a first servo motor; 4. a hot-melt cylinder; 401. reaming a dragon roller; 402. a particle delivery chamber; 403. heating a pipe; 404. a hot melt chamber; 405. A drive shaft; 406. a transmission shaft support; 5. a mold frame; 6. an injection tube; 601. a mixing cavity; 602. a material conveying cavity; 603. a liquid transfer chamber; 604. a cylinder; 605. an ear plate; 606. an injection needle; 607. a seal ring; 7. a telescopic pipe; 9. a second servo motor; 10. a plastic interior trim part; 11. A threaded lead screw; 1101. a screw rod sleeve; 1102. a first skid; 1103. a second skid; 12. a sliding frame; 13. forming a mold; 1301. a front mold shell; 1302. a shaped cavity; 1303. A first sliding rack; 1304. a third servo motor; 1306. a first gear; 1307. a second sliding rack; 1308. a neck cavity; 1309. a sliding groove; 1310. extruding the spring; 1311. breaking the knife; 1312. a rear mold shell; 14. a conveyor belt; 15. an inflation assembly; 1501. a second cylinder; 1502. an air inlet pipe; 1503. an air charging nozzle.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the above description of the present invention, it should be noted that the terms "one side", "the other side" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which the present invention is used for, and are only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

Further, the term "identical" and the like do not mean that the components are absolutely required to be identical, but may have slight differences. The term "perpendicular" merely means that the positional relationship between the components is more perpendicular than "parallel", and does not mean that the structure must be perfectly perpendicular, but may be slightly inclined.

Example 1

Referring to fig. 1-8, the present invention provides a technical solution: a processing mold for an automotive plastic interior trim part comprises a supporting base 1, a mold rack 5 and forming molds 13, wherein the supporting base 1 is arranged on the rear side of the mold rack 5, the number of the forming molds 13 is two, and the two forming molds 13 are arranged on the mold rack 5;

a hot melting cylinder 4 is fixedly installed at the top end of the supporting base 1, a storage hopper 2 is installed in the middle of the hot melting cylinder 4, one end of the hot melting cylinder 4 extends into the mold rack 5, an injection cylinder 6 is arranged at the top end of the hot melting cylinder 4 extending into the mold rack 5, a telescopic pipe 7 is arranged at the bottom end of the injection cylinder 6, the telescopic pipe 7 is arranged above the two forming molds 13, and an inflation assembly 15 is respectively arranged at the left side and the right side of the injection cylinder 6;

wherein, the two forming dies 13 slide back and forth under the telescopic tube 7. Through being provided with two forming die in the mould frame, two forming die slide in step, when one of them forming die removes when filling the plastic to flexible pipe below, at this moment, another forming die must be in the arbitrary one side of flexible pipe both sides and aerify the subassembly below, thereby realize, when one of them forming die is filling the plastic, another mould must be aerifing, thereby realize earlier encapsulating, the fashioned incessant continuity production and processing of blowing again, effectively improve production efficiency, save time, and the output is increased.

The hot melting cylinder 4 comprises a particle conveying cavity 402 arranged inside the hot melting cylinder 4 and a hot melting cavity 404 communicated with the particle conveying cavity 402, wherein a heating pipe 403 with a spiral structure is arranged inside the hot melting cavity 404, the heating pipe 403 can be electrically heated and can also be supplied with heat by gas or conducted by other heat sources, so that the hot melting cavity 404 keeps balanced hot temperature, and the particle plastics are hot melted into a plastic structure in the hot melting cavity 404.

The internal rotation of granule transport chamber 402 is connected with dragon roller 401 of hinge, 4 outside fixed mounting of hot melt section of thick bamboo has first servo motor 3, dragon roller 401 of hinge wherein one end and the outside output shaft fixed connection of the first servo motor 3 of 4 outside of hot melt section of thick bamboos, the dragon roller 401 other end of hinge stretches into in hot melt chamber 404, the dragon roller 401 top fixed mounting who stretches into in hot melt chamber 404 has transmission shaft 405, transmission shaft 405 top is rotated through antifriction bearing and is connected on transmission shaft support 406, transmission shaft support 406 sets up in hot melt chamber 404, be convenient for carry granule plastics to in the hot melt chamber 404.

1. The mold for processing plastic interior trim parts of an automobile according to claim 2, wherein: the middle part of the injection tube 6 is provided with a mixing cavity 601, the mixing cavity 601 is communicated with the hot melting cavity 404, the bottom of the mixing cavity 601 is provided with a material conveying cavity 602, and the top end of the telescopic tube 7 is connected in the material conveying cavity 602 in a sliding manner.

2. The mold for processing plastic interior trim parts for automobiles according to claim 3, characterized in that: an ear plate 605 is fixedly arranged in the middle of the outer wall of the telescopic tube 7, an air cylinder 604 is fixedly arranged at the bottom end of the hot melting cylinder 4, a piston rod extends downwards from the air cylinder 604, the bottom end of the piston rod of the air cylinder 604 is fixedly connected with the ear plate 605, a syringe needle 606 is arranged at the bottom end of the telescopic tube 7, and a liquid delivery cavity 603 communicated with the liquid delivery cavity 603 and penetrating through the syringe needle 606 is arranged on the inner wall of the liquid delivery cavity 602.

The mold for processing plastic interior trim parts of an automobile according to claim 4, wherein:

the injection needle 606 is a circular tube structure, the bottom end of the injection needle 606 is a tapered flat structure, and the bottom end surface of the injection needle 606 is an arc surface.

The outer wall of the telescopic pipe 7 is clamped and fixed with the inner wall of the material conveying cavity 602, and the inner wall of the material conveying cavity 602 is provided with a sealing ring 607. The inner wall of the material conveying cavity 602 is connected with the surface of the telescopic pipe 7 in a sealing way through a sealing ring 607.

Each forming die 13 comprises a front die shell 1301 and a rear die shell 1312 which are attached to each other, the front die shell 1301 and the rear die shell 1312 of each forming die 13 are connected to a second sliding rack 1103 in a sliding mode, the bottom end of the second sliding rack 1103 is fixed to a first sliding rack 1102, the bottom end of the first sliding rack 1102 is connected to a sliding rack 12 in a sliding mode, and two ends of the sliding rack 12 are fixed to the inner wall of the die rack 5;

the inner wall of the mold frame 5 is rotatably connected with a threaded screw rod 11, the bottom end of the first sliding frame 1102 is provided with a screw rod sleeve 1101, the screw rod sleeve 1101 at the bottom end of the first sliding frame 1102 is in threaded connection with the threaded screw rod 11, a second servo motor 9 is fixedly mounted on the outer side of the mold frame 5, and an output shaft of the second servo motor 9 is fixedly connected with the threaded screw rod 11.

The second servo motor 9 drives the threaded screw rod 11 to rotate, the two forming dies are driven to synchronously slide through the second servo motor, the other combined forming die is moved to the lower part of the telescopic pipe, the step S4 is repeated, and the forming die with plastic cement in the other cavity is moved to the lower part of one of the air inflation assemblies;

the front mold shell 1301 and the rear mold shell 1312 are assembled and combined into a group, the front mold shell 1301 and the rear mold shell 1312 are respectively provided with a corresponding cavity 1302, the bottom end of the front mold shell 1301 of each forming mold 13 is fixedly provided with a first sliding rack 1303, the bottom end of the rear mold shell 1312 of each forming mold 13 is fixedly provided with a second sliding rack 1307,

a first gear 1306 is connected between the second sliding rack 1307 and the first sliding rack 1303 in a meshing manner, the first gear 1306 is installed on an output shaft of a third servo motor 1304, the third servo motor 1304 is fixed at the bottom end of the first sliding frame 1102, the third servo motor drives the first gear to rotate, the first gear rotates to drive the first sliding rack and the second sliding rack to expand towards two sides, the front formwork and the rear formwork are separated, and the interior trim part product falls downwards onto the conveyor belt and is transferred out.

Neck cavities 1308 are respectively formed in the top end of the front formwork 1301 and the top end of the rear formwork 1312, a sliding groove 1309 is respectively formed in the top end of each neck cavity 1308, a brake breaking knife 1311 is connected in each sliding groove 1309 in a sliding mode, an extrusion spring 1310 is arranged at the top end of each brake breaking knife 1311 connected in the sliding groove 1309 in a sliding mode, and inclined blades are respectively formed at the top ends of the two brake breaking knives 1311.

The bottom of the injection needle is arc-shaped, the bottom of the injection needle is provided with the inclined conical surface which is matched with the top surfaces of the gate breaking knives, the arc-shaped bottom of the injection needle can move downwards from the top ends of the cutting edges of the two gate breaking knives by utilizing the inclined surfaces of the top surfaces of the gate breaking knives and the cutting edge inclined surfaces of the gate breaking knives, the cutting edges are pushed to be scattered towards two sides through the inclined surfaces of the cutting edges, the resistance of the injection needle entering the neck cavity downwards is reduced, and the rapidity and the smoothness of glue filling action are improved.

The inflation assembly 15 comprises a second air cylinder 1501 fixed on the mold frame 5, a piston rod extends downwards from the second air cylinder 1501, an inflation nozzle 1503 is fixed at the bottom end of the piston rod of the second air cylinder 1501, the structure of the inflation nozzle 1503 is the same as that of the injection needle 606, an air inlet pipe 1502 communicated with an external air source is arranged outside the inflation nozzle 1503, the inflation nozzle 1503 is conveniently communicated with an external air source such as an air pump, and the air source is provided for the inflation nozzle 1503.

Example 2

Referring to fig. 9, the embodiment has the same points as embodiment 1, and the same points are not described again in this embodiment, but the specific differences are as follows:

the invention provides a technical scheme that: a processing method of an automotive plastic interior trim part mainly comprises the following steps:

s1, plastic particle feeding: putting plastic particles into a particle storage hopper;

s2, conveying particles: the plastic particles put into the particle storage hopper in the step S1 fall into the particle conveying cavity through the particle storage hopper, and are pushed into the hot melting cavity by the rotation of the auger roller;

s3, hot melting into a liquid state: carrying out hot melting on the plastic particles entering the hot melting cavity in the step S2, generating high temperature through the heating pipe, and rapidly carrying out hot melting on the plastic particles entering the hot melting cavity to form liquid plastic colloid (plastic cement for short, in a gel state);

s4, plastic injection in the cavity: conveying the plastic melted into liquid in the step S3, descending downwards through a telescopic pipe to be communicated with one combined forming die, and injecting the plastic melted into liquid into a cavity of the forming die;

s5, transferring the mold and injecting plastic into the other mold: transferring the forming die which is injected with the plastic in the step S4, driving the two forming dies to synchronously slide through a second servo motor, moving the other combined forming die to the lower part of the telescopic pipe to obtain the step S4, and moving the forming die with the plastic in the other cavity to the lower part of one of the air inflation assemblies;

s6, plastic injection cutting: and in the step S4 and the step S5, after the injection needle below the telescopic pipe extends into the cavity of the forming die and is injected with glue, when the injection needle is pulled out of the neck cavity of the forming die, the plastic gate at the bottom of the injection needle is broken through the elastic gate fastening towards the middle by the gate breaking knives on the top surface of the front die shell and the top surface of the rear die shell of the forming die, so that the plastic remains at the position of the neck cavity.

S7, inflation molding of a cavity: inflating and molding the molding die moved into the lower part of the inflation assembly in the step S5, descending downwards through an inflation nozzle, extending the inflation nozzle into the shape cavity from the neck cavity of the molding die, and blowing air to the plastic in the shape cavity to enable the plastic to expand until the plastic is completely attached to the inner wall of the shape cavity, so as to obtain a molded interior trim part product;

s8, demolding of the interior trim part product: and (4) demolding the interior trim part product molded in the step (S7), driving a first gear to rotate through a third servo motor, driving a first sliding rack and a second sliding rack to expand towards two sides through the rotation of the first gear, separating a front mold shell and a rear mold shell, and enabling the interior trim part product to drop downwards onto a conveyor belt to be transferred out.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The processing mold for the automotive plastic interior trim part comprises a supporting base, a mold rack and two forming molds, and is characterized in that the supporting base is arranged on the rear side of the mold rack, the number of the forming molds is two, and the two forming molds are arranged on the mold rack;

the top end of the supporting base is fixedly provided with a hot melting cylinder, the middle part of the hot melting cylinder is provided with a storage hopper, one end of the hot melting cylinder extends into the die rack, the top end of the hot melting cylinder extending into the die rack is provided with an injection cylinder, the bottom end of the injection cylinder is provided with a telescopic pipe, the telescopic pipe is arranged above the two forming dies, and the left side and the right side of the injection cylinder are respectively provided with an inflation assembly;

and the two forming dies slide left and right in a reciprocating manner below the telescopic pipe.

2. The mold for processing plastic interior trim parts of an automobile according to claim 1, wherein: a hot melt section of thick bamboo is including seting up in the inside granule transport chamber of a hot melt section of thick bamboo to and communicate in the hot melt chamber in chamber is carried to the granule, the intracavity is carried to the granule rotates and is connected with the dragon roller of hinge, the outside fixed mounting of hot melt section of thick bamboo has a servo motor, the dragon roller of hinge wherein one end and the outside servo motor's of hot melt section of thick bamboo output shaft fixed connection, the dragon roller of hinge other end stretches into in the hot melt intracavity, stretches into in the hot melt intracavity the dragon roller top fixed mounting of hinge has the transmission shaft, the transmission shaft top is rotated through antifriction bearing and is connected on the transmission shaft support, the transmission shaft support sets up in the hot melt intracavity.

3. The mold for processing plastic interior trim parts of an automobile according to claim 2, wherein: mixing cavity has been seted up at the injection tube middle part, mixing cavity and hot melt chamber intercommunication, mixing cavity bottom has been seted up defeated material chamber, flexible pipe top is through sliding connection in defeated material intracavity.

4. The mold for processing plastic interior trim parts of an automobile according to claim 3, wherein: the utility model discloses a hot melt cylinder, including telescopic tube, hot melt cylinder, piston rod, telescopic tube outer wall middle part fixed mounting has the otic placode, hot melt cylinder bottom fixed mounting has the cylinder, the cylinder stretches out downwards has the piston rod, the piston rod bottom and the otic placode fixed connection of cylinder, telescopic tube bottom is provided with the syringe needle, defeated intracavity wall is seted up and is communicated in passing the sap cavity and run through in the biography sap cavity of syringe needle.

5. The mold for processing plastic interior trim parts of an automobile according to claim 4, wherein: the syringe needle is the pipe structure, the syringe needle bottom is conical flat structure, just syringe needle bottom end face is the arcwall face.

6. The mold for processing plastic interior trim parts of an automobile according to claim 1, wherein: each forming die comprises a front die shell and a rear die shell which are attached to each other, the front die shell and the rear die shell of each forming die are connected to a second sliding frame in a sliding mode, the bottom end of the second sliding frame is fixed to a first sliding frame, the bottom end of the first sliding frame is connected to a sliding rack in a sliding mode, and two ends of the sliding rack are fixed to the inner wall of the die rack;

7. The mold for processing plastic interior trim parts of automobiles according to claim 6, wherein: the front mould shell and the rear mould shell are assembled and form a group, the front mould shell and the rear mould shell are respectively provided with corresponding shaped cavities, the bottom end of the front mould shell of each forming mould is fixedly provided with a first sliding rack, the bottom end of the rear mould shell of each forming mould is fixedly provided with a second sliding rack,

and a first gear is meshed and connected between the second sliding rack and the first sliding rack, the first gear is arranged on an output shaft of a third servo motor, and the third servo motor is fixed at the bottom end of the first sliding frame.

8. The mold for processing plastic interior trim parts of automobiles according to claim 7, wherein: neck cavities are respectively formed in the top end of the front formwork and the top end of the rear formwork, a sliding groove is respectively formed in the top end of each neck cavity, a brake breaking knife is connected in each sliding groove in a sliding mode, an extrusion spring is arranged at the top end of each brake breaking knife in sliding connection in each sliding groove, and cutting edges with inclined planes are respectively formed at the top ends of the two brake breaking knives.

9. The mold for processing plastic interior trim parts of an automobile according to claim 1, wherein: the inflation assembly comprises a second cylinder fixed on the mold frame, a piston rod extends downwards from the second cylinder, an inflation nozzle is fixed at the bottom end of the piston rod of the second cylinder, the structure of the inflation nozzle is the same as that of the injection needle, and an air inlet pipe communicated with an external air source is arranged outside the inflation nozzle.

10. A processing method of an automotive plastic interior trim part is characterized by comprising the following steps: the processing method of the automotive plastic interior trim part is completed by matching the processing mold of the automotive plastic interior trim part as claimed in claim 5, claim 8 or claim 9, and mainly comprises the following steps:

s4, injecting plastic into the cavity: conveying the plastic melted into liquid in the step S3, descending downwards through a telescopic pipe to be communicated with one combined forming die, and injecting the plastic melted into liquid into a cavity of the forming die;

s5, transferring the mold and injecting plastic into the other mold: transferring the forming mold which is injected with the plastic cement in the step S4, driving the two forming molds to synchronously slide through a second servo motor, moving the other combined forming mold to the lower part of the telescopic pipe to obtain the step S4, and moving the other forming mold with the plastic cement in the cavity to the lower part of one of the air inflation assemblies;

s6, plastic injection cutting: and in the step S4 and the step S5, after the injection needle below the telescopic pipe extends into the cavity of the forming die and is injected with the glue, when the injection needle is pulled out of the neck cavity of the forming die, the plastic gate at the bottom of the injection needle is broken by tightly locking the gate breaking knives on the top surface of the front mold shell and the top surface of the rear mold shell of the forming die to the middle elastic gate, so that the plastic is stopped at the position of the neck cavity.