CN111805791A

CN111805791A - Polyvinyl chloride plastic automobile skylight drain pipe and preparation and assembly method thereof

Info

Publication number: CN111805791A
Application number: CN202010724678.XA
Authority: CN
Inventors: 寇桂发; 温添才; 闾钟明
Original assignee: Dongguan Kaitai Auto Parts Co ltd
Current assignee: Dongguan Kaitai Auto Parts Co ltd
Priority date: 2020-07-24
Filing date: 2020-07-24
Publication date: 2020-10-23

Abstract

The invention discloses a polyvinyl chloride plastic automobile skylight drain pipe and a preparation and assembly method thereof, wherein the polyvinyl chloride plastic automobile skylight drain pipe comprises a hollow round pipe-shaped drain pipe main body, a drain pipe joint and a fixing buckle, wherein the drain pipe main body comprises the following materials: the coating comprises three types of PVC powder, a DINP type plasticizer, an epoxy soybean oil type plasticizer, a calcium zinc stabilizer, an odor adsorbent, calcium carbonate, an antioxidant and a weather-resistant agent; the polyvinyl chloride plastic automobile skylight drain pipe has the advantages of low odor, low VOC and high cost performance. The preparation and assembly method comprises the following process steps: step 1, preparing PVC modified particles; step 2, performing PVC modified particle pretreatment; step 3, extrusion molding; step 4, cutting; step 5, assembling a drain pipe joint and a fixing buckle; the preparation and assembly method can effectively complete the preparation and assembly of the polyvinyl chloride plastic automobile skylight drain pipe.

Description

Polyvinyl chloride plastic automobile skylight drain pipe and preparation and assembly method thereof

Technical Field

The invention relates to the technical field of automobile skylight drain pipes, in particular to a polyvinyl chloride plastic automobile skylight drain pipe and a preparation and assembly method thereof.

Background

Polyvinyl chloride (PVC) is one of the most important general plastics in the world, second only to Polyethylene (PE) in its worldwide annual use; in addition to the low price of PVC, it is more important that PVC has important features of excellent weather resistance, flame retardancy, chemical resistance, large adjustable range of hardness, etc., and PVC materials and products thereof make important contributions to human lives from indoor electric wires to outdoor cables, from toys on children's hands to infusion tubes used in hospitals. In addition, due to its chemical properties, PVC is susceptible to decomposition of acid gases under heat, and PVC usually contains various modifiers such as plasticizers and stabilizers, which causes strong odor and irritation of materials and products thereof, and many Volatile Organic Compounds (VOCs) are harmful to human body and environment.

The automobile industry is one of the largest global industrial systems, and the requirements on safety, environmental protection, human health and the like are in the front of all industries. Automobile parts can be generally divided into exterior and interior; since the vehicle cabin is generally a semi-closed space in which the interior is in close contact with the human body, the odor, VOC, requirements for the interior materials are high. In fact, among many industrial systems, only the automobile industry has strict odor test standards and requirements, such as the interior odor standard VDA270 of the german automobile industry association, the odor test standard PV3900 of the mass automobile group, and the like, which have strict detection processes, and the detection results of the odor are quantified. In contrast, in the industries of toys, medical care, and the like, it has been almost impossible to simply judge "light" or "heavy" of odor by the experience of a practitioner. For the detection of VOC, the detailed analysis can be performed by advanced detection instruments, and it has become a basic threshold set by modern automobile enterprises for interior materials, for example, JASO M902 of toyota automobile group is one of the excellent standards recognized in the industry.

As an interior automobile part, the automobile skylight drain pipe is arranged in a vehicle cabin and used for dredging rainwater in a car skylight, and belongs to a part of an automobile skylight assembly. Considering that sunroof drains are laid in the roof sandwich, most automotive host factories manage them as interior trims, requiring interior trim odor and VOC standards to be implemented. The automobile skylight drain pipe is generally made of synthetic PVC, TPE or EPDM and the like, and the TPE or the EPDM has the defect of high cost.

At present, most automobile skylight drain pipes prepared from PVC in the industry have the defects of large odor, stimulation and high VOC content, and have non-negligible influence on human bodies and the environment. In view of the current state of the industry, most automobile host factories can only adopt a standard-relaxing and threshold-lowering method to receive the products, but obviously, the products still far do not meet the increasingly strict detection requirements of the automobile industry.

Disclosure of Invention

The invention aims to provide a polyvinyl chloride plastic automobile skylight drain pipe aiming at the defects of the prior art, and the polyvinyl chloride plastic automobile skylight drain pipe has the advantages of low odor, low VOC and high cost performance.

The invention also aims to provide a preparation and assembly method of the polyvinyl chloride plastic automobile skylight drain pipe, which can effectively complete the preparation and assembly of the polyvinyl chloride plastic automobile skylight drain pipe, and the prepared automobile skylight drain pipe has the advantages of low odor, low VOC and high cost performance.

In order to achieve the above object, the present invention is achieved by the following technical solutions.

The utility model provides a polyvinyl chloride plastics sunroof drain pipe, is including the drain pipe main part that is cavity pipe shape, and the tip cartridge has the drain pipe joint before the centre bore of drain pipe main part, and the also cartridge of tip has the drain pipe joint behind the centre bore of drain pipe main part, and the middle part cover card of drain pipe main part has fixed buckle, and the drain pipe main part is specific including the material of following weight percent:

52 to 58 percent of three-type PVC powder

DINP type plasticizer 32-41%

1.5 to 1.7 percent of epoxy soybean oil type plasticizer

2.6 to 3 percent of calcium-zinc stabilizer

2.4 to 2.9 percent of odor adsorbent

0 to 8 percent of calcium carbonate

0.05 percent of antioxidant

0.05 percent of weather resistant agent;

the drain pipe main body of the polyvinyl chloride plastic automobile skylight drain pipe is prepared by adopting the following process, and specifically comprises the following steps:

a. accurately weighing the materials according to the weight percentage of the materials contained in the main body of the drain pipe;

b. respectively putting half of the weighed DINP type plasticizer, all the three types of PVC powder and all the calcium-zinc stabilizer into a high-speed mixer for primary stirring and mixing treatment, wherein the stirring time is 10-12 minutes, and the stirring temperature is 80-90 ℃;

c. after the first stirring and mixing treatment is finished, respectively putting the other half of the weighed DINP type plasticizer and all the epoxy soybean oil type plasticizers into a high-speed mixer for second stirring and mixing treatment, wherein the stirring time is 10-12 minutes, and the stirring temperature is 110-120 ℃;

d. after the second stirring and mixing treatment is finished, putting all the weighed calcium carbonate into a high-speed mixer for third stirring and mixing treatment, wherein the stirring time is 8-10 minutes, and the stirring temperature is 110-120 ℃;

e. after the third stirring and mixing treatment is finished, stopping heating in the high-speed mixer, and respectively putting all the weighed antioxidant and weather-resistant agent into the high-speed mixer to carry out the fourth stirring and mixing treatment for 1-2 minutes;

f. after the fourth stirring and mixing treatment is finished, properly slowing down the stirring speed, and putting all the weighed odor adsorbents into a high-speed mixer for fifth stirring and mixing treatment, wherein the stirring time is 8-10 minutes;

g. after the fifth stirring and mixing treatment is finished, putting the mixed powder into a low-speed mixer for low-speed stirring treatment, wherein the integral temperature of the powder is reduced to 40-60 ℃ during low-speed stirring to be the best, and the reactor core temperature of the powder material pile is lower than 80 ℃;

h. putting the powder stirred by the low-speed mixer into a parallel counter-rotating double-screw granulator, and extruding and granulating the powder by the parallel counter-rotating double-screw granulator to obtain PVC modified particles;

i. pumping PVC modified particles obtained after extrusion and granulation by a parallel counter-rotating twin-screw granulator into a vacuum pan, wherein the air pressure value in the vacuum pan is negative one atmosphere, the PVC modified particles are continuously boiled and rolled in the vacuum pan, and the processing time is 15 minutes;

j. putting the PVC modified particles treated by the vacuum pan into a single-screw extruder, and extruding and molding a drain pipe main body by the single-screw extruder; when the single-screw extruder extrudes and forms the drain pipe main body, the temperature of each heating section is 140-170 ℃, the head temperature of the single-screw extruder is lower than 180 ℃, and the extrusion speed is 850 m/min.

Wherein, the drain pipe main part is including the following weight percent's material, specifically:

53 to 56 percent of three-type PVC powder

34% -38% of DINP plasticizer

1.5 to 1.7 percent of epoxy soybean oil type plasticizer

2.6 to 3 percent of calcium-zinc stabilizer

2.4 to 2.9 percent of odor adsorbent

2 to 6 percent of calcium carbonate

0.05 percent of antioxidant

0.05 percent of weather resistant agent.

54 percent of three-type PVC powder

DINP type plasticizer 34.5%

Epoxy soybean oil type plasticizer 1.5%

3 percent of calcium-zinc stabilizer

Odor adsorbent 2.9%

Calcium carbonate 4%

0.05 percent of antioxidant

0.05 percent of weather resistant agent.

A preparation and assembly method of a polyvinyl chloride plastic automobile skylight drain pipe comprises the following process steps:

step 1, preparing PVC modified particles; the preparation method of the PVC modified particles comprises the following steps:

step 11, accurately weighing the following materials in percentage by weight: 52 to 58 percent of three-type PVC powder, 32 to 41 percent of DINP plasticizer, 1.5 to 1.7 percent of epoxy soybean oil plasticizer, 2.6 to 3 percent of calcium-zinc stabilizer, 2.4 to 2.9 percent of odor adsorbent, 0 to 8 percent of calcium carbonate, 0.05 percent of antioxidant and 0.05 percent of weather-resistant agent;

step 12, respectively putting half of the weighed DINP type plasticizer, all the three types of PVC powder and all the calcium-zinc stabilizer into a high-speed mixer for primary stirring and mixing treatment, wherein the stirring time is 10-12 minutes, and the stirring temperature is 80-90 ℃;

step 13, after the first stirring and mixing treatment is finished, respectively putting the other half of the weighed DINP type plasticizer and all the epoxy soybean oil type plasticizers into a high-speed mixer for second stirring and mixing treatment, wherein the stirring time is 10-12 minutes, and the stirring temperature is 110-120 ℃;

step 14, after the second stirring and mixing treatment is finished, putting all the weighed calcium carbonate into a high-speed mixer for third stirring and mixing treatment, wherein the stirring time is 8-10 minutes, and the stirring temperature is 110-120 ℃;

step 15, after the third stirring and mixing treatment is finished, stopping heating in the high-speed mixer, and respectively putting all the weighed antioxidant and weather-resistant agent into the high-speed mixer to carry out the fourth stirring and mixing treatment for 1-2 minutes;

step 16, after the fourth stirring and mixing treatment is finished, properly slowing down the stirring speed, and putting all the weighed odor adsorbents into a high-speed mixer for fifth stirring and mixing treatment, wherein the stirring time is 8-10 minutes;

step 17, after the fifth stirring and mixing treatment is finished, putting the mixed powder into a low-speed mixer for low-speed stirring treatment, wherein the integral temperature of the powder is reduced to 40-60 ℃ during low-speed stirring, and the reactor core temperature of the powder material pile is lower than 80 ℃;

18, putting the powder stirred by the low-speed mixer into a parallel counter-rotating double-screw granulator, and extruding and granulating the powder by the parallel counter-rotating double-screw granulator to obtain PVC modified particles;

step 2, PVC modified particle pretreatment step: pumping PVC modified particles obtained after extrusion and granulation by a parallel counter-rotating twin-screw granulator into a vacuum pan, wherein the air pressure value in the vacuum pan is negative one atmosphere, the PVC modified particles are continuously boiled and rolled in the vacuum pan, and the processing time is 15 minutes;

step 3, extrusion molding of the drain pipe main body: putting the PVC modified particles treated by the vacuum pan into a single-screw extruder, and extruding and molding a drain pipe main body by the single-screw extruder; when the single-screw extruder extrudes and forms the drain pipe main body, the temperature of each heating section is as follows in sequence: 140-150 ℃ in the first zone, 145-155 ℃ in the second zone, 150-160 ℃ in the third zone, 155-165 ℃ in the fourth zone, 160-170 ℃ in the fifth zone, 155-165 ℃ in the sixth zone and 150-160 ℃ in the seventh zone, wherein the head temperature of the single-screw extruder is lower than 180 ℃, and the extrusion speed is 850 m/min; when the drainage pipe main body is continuously extruded and molded by the single-screw extruder, the inner diameter and the outer diameter of the drainage pipe main body are monitored in real time by the sizing instrument;

step 4, cutting the drain pipe main body: the drain pipe main body continuously extruded and molded by the single-screw extruder is sent to a fixed-length cutting machine for cutting operation, and the fixed-length cutting machine cuts the continuous drain pipe main body into the drain pipe main body with the specified length;

step 5, assembling a drain pipe joint and a fixing buckle: the assembling step of the drain pipe joint and the fixed buckle adopts a joint and buckle automatic assembling device to complete the assembling operation of the drain pipe joint and the fixed buckle so as to obtain a finished product of the automobile skylight drain pipe;

the automatic assembling device for the connector and the buckle comprises a rack, wherein a fixed mounting plate which is horizontally and transversely arranged is arranged at the upper end of the rack, and the fixed mounting plate is provided with a main body positioning and placing assembly, a left connector mounting assembly positioned at the left end side of the main body positioning and placing assembly and a right connector mounting assembly positioned at the right end side of the main body positioning and placing assembly; the main body positioning and placing assembly comprises a positioning and placing mounting frame which is screwed and fastened on the upper surface of the fixed mounting plate, at least two fixed positioning plates which are sequentially aligned from left to right and are arranged at intervals are screwed at the upper end part of the positioning and placing mounting frame, the middle position of the upper surface of each fixed positioning plate is respectively provided with a fixed positioning groove which completely penetrates from left to right and is opened upwards, each fixed positioning groove is a semicircular groove, and the diameter value of each fixed positioning groove is respectively equal to the outer diameter value of the drain pipe main body; the upper end side of each fixed positioning plate is respectively provided with a movable positioning plate in a relatively rotatable manner, the rear end part of each movable positioning plate is respectively hinged with the rear end part of the corresponding fixed positioning plate, a positioning plate driving cylinder is respectively arranged between each movable positioning plate and the corresponding fixed positioning plate, the cylinder body of each positioning plate driving cylinder is respectively hinged at the rear end part of the corresponding fixed positioning plate through a pivot, and the extending end part of the piston rod of each positioning plate driving cylinder is respectively hinged at the rear end part of the corresponding movable positioning plate through a pivot; each movable positioning plate is respectively provided with a left movable positioning groove and a right movable positioning groove which are completely penetrated, when the movable positioning plates and the corresponding fixed positioning plates are closed, the movable positioning grooves and the fixed positioning grooves are aligned, and the movable positioning grooves and the fixed positioning grooves form a main body positioning hole with the inner diameter value equal to the outer diameter value of the main body of the drain pipe;

the automatic material stopping device comprises a fixed mounting plate, a main body clamping assembly and a buckle mounting assembly, wherein the fixed mounting plate is provided with an automatic material stopping assembly at the right end side of the rightmost fixed positioning plate, the automatic material stopping assembly comprises a material stopping mounting frame which is screwed and fastened on the upper surface of the fixed mounting plate, the upper end part of the material stopping mounting frame is screwed with a material stopping driving cylinder which horizontally moves forwards and backwards, the extending end part of a piston rod of the material stopping driving cylinder is provided with a material stopping movable frame, and the material stopping movable frame is screwed with material stopping plates which are vertically arranged and extend along the front and back directions; when the striker plate moves backwards to the limit position, the striker plate is in contact with the right end face of the rightmost fixed positioning block, and the striker plate blocks the right end opening of the fixed positioning groove of the rightmost fixed positioning block.

The left joint mounting assembly and the right joint mounting assembly respectively comprise a joint automatic feeding mechanism and a joint grabbing and mounting mechanism;

the automatic joint feeding mechanism comprises a joint feeding vibration disc arranged on the upper surface of the fixed mounting plate, a joint feeding guide frame is arranged at a discharge port of the joint feeding vibration disc, a joint feeding guide groove which completely penetrates along the discharge direction of the water discharge pipe joint is formed in the joint feeding guide frame, a joint feeding straight vibration device is arranged on the lower end side of the joint feeding guide frame on the upper surface of the fixed mounting plate, and the joint feeding guide frame is arranged at the upper end part of the joint feeding straight vibration device; the fixed mounting frame is provided with a joint bearing mounting frame beside the joint feeding vertical vibration device, the upper end part of the joint bearing mounting frame is provided with a joint bearing block which can move horizontally relatively, the joint bearing block is provided with a joint bearing groove, the joint bearing mounting frame is provided with a horizontally-acting joint bearing driving cylinder corresponding to the joint bearing block, and the extending end part of a piston rod of the joint bearing driving cylinder is connected with the joint bearing block; when the joint bearing block is at the initial position, the joint bearing groove of the joint bearing block aligns with the joint feeding guide groove of the joint feeding guide frame;

the connector grabbing and installing mechanism comprises a manipulator installation seat which is arranged on the upper surface of the fixed installation plate in a threaded mode, a four-axis manipulator is arranged on the upper end portion of the manipulator installation seat in a threaded mode, and a connector grabbing air claw is arranged at the driving end of the four-axis manipulator.

The main body clamping assembly comprises a main body clamping mounting frame which is screwed on the upper surface of the fixed mounting plate, the upper end part of the main body clamping mounting frame is provided with a main body clamping driving cylinder which horizontally moves back and forth, the extending end part of a piston rod of the main body clamping driving cylinder is provided with a main body clamping movable frame, and the main body clamping movable frame is provided with two main body clamping air claws which are arranged at left and right intervals.

The buckle mounting assembly comprises an automatic buckle feeding mechanism and a buckle grabbing and mounting mechanism;

the automatic buckle feeding mechanism comprises a buckle feeding vibration disc arranged on the upper surface of the fixed mounting plate, a buckle feeding guide frame is arranged at a discharge port of the buckle feeding vibration disc, a buckle feeding guide groove which completely penetrates along the fixed buckle sending-out direction is formed in the buckle feeding guide frame, a buckle feeding rectilinear vibration device is arranged on the lower end side of the buckle feeding guide frame on the upper surface of the fixed mounting plate, and the buckle feeding guide frame is arranged at the upper end of the buckle feeding rectilinear vibration device; the fixed mounting frame is provided with a buckle bearing mounting frame beside the buckle loading straight vibration device, the upper end part of the buckle bearing mounting frame can be relatively horizontally and movably provided with a buckle bearing block, the buckle bearing block is provided with a buckle bearing groove, the buckle bearing mounting frame is provided with a horizontally-acting buckle bearing driving cylinder corresponding to the buckle bearing block, and the extending end part of a piston rod of the buckle bearing driving cylinder is connected with the buckle bearing block; when the buckle bearing block is at the initial position, the buckle bearing groove of the buckle bearing block aligns with the buckle feeding guide groove of the buckle feeding guide frame;

the buckle snatchs installation mechanism snatchs the mounting bracket including the buckle of spiral shell dress in fixed mounting panel upper surface, and the buckle snatchs the upper end of mounting bracket and has installed the linear module of horizontal drive of horizontal action around installing, and the horizontal adjustable shelf has been installed to the drive end of the linear module of horizontal drive, and the horizontal adjustable shelf has installed the linear module of lift drive of upper and lower action, and the lift adjustable shelf has been installed to the drive end of the linear module of lift drive, and the lift adjustable shelf has installed the buckle and has snatched.

In the step 11, the following materials are accurately weighed according to the weight percentage: 53-56% of three-type PVC powder, 34-38% of DINP plasticizer, 1.5-1.7% of epoxy soybean oil plasticizer, 2.6-3% of calcium-zinc stabilizer, 2.4-2.9% of odor adsorbent, 2-6% of calcium carbonate, 0.05% of antioxidant and 0.05% of weather-resistant agent.

In the step 11, the following materials are accurately weighed according to the weight percentage: 54 percent of three-type PVC powder, 34.5 percent of DINP type plasticizer, 1.5 percent of epoxy soybean oil type plasticizer, 3 percent of calcium-zinc stabilizer, 2.9 percent of odor adsorbent, 4 percent of calcium carbonate, 0.05 percent of antioxidant and 0.05 percent of weather-resistant agent.

The invention has the beneficial effects that: the invention relates to a polyvinyl chloride plastic automobile skylight drain pipe, which comprises a hollow round pipe-shaped drain pipe main body, wherein a drain pipe joint is inserted at the front end part of a central hole of the drain pipe main body, a drain pipe joint is also inserted at the rear end part of the central hole of the drain pipe main body, and a fixing buckle is sleeved and clamped in the middle part of the drain pipe main body, and the polyvinyl chloride plastic automobile skylight drain pipe is characterized in that the drain pipe main body comprises the following materials in percentage by weight: 52-58% of three-type PVC powder, 32-41% of DINP plasticizer, 1.5-1.7% of epoxy soybean oil plasticizer, 2.6-3% of calcium-zinc stabilizer, 2.4-2.9% of odor adsorbent, 0-8% of calcium carbonate, 0.05% of antioxidant and 0.05% of weather-resistant agent; the drain pipe main body of the polyvinyl chloride plastic automobile skylight drain pipe is prepared by adopting the following process, and specifically comprises the following steps: a. accurately weighing the materials according to the weight percentage of the materials contained in the main body of the drain pipe; b. respectively putting half of the weighed DINP type plasticizer, all the three types of PVC powder and all the calcium-zinc stabilizer into a high-speed mixer for primary stirring and mixing treatment, wherein the stirring time is 10-12 minutes, and the stirring temperature is 80-90 ℃; c. after the first stirring and mixing treatment is finished, respectively putting the other half of the weighed DINP type plasticizer and all the epoxy soybean oil type plasticizers into a high-speed mixer for second stirring and mixing treatment, wherein the stirring time is 10-12 minutes, and the stirring temperature is 110-120 ℃; d. after the second stirring and mixing treatment is finished, putting all the weighed calcium carbonate into a high-speed mixer for third stirring and mixing treatment, wherein the stirring time is 8-10 minutes, and the stirring temperature is 110-120 ℃; e. after the third stirring and mixing treatment is finished, stopping heating in the high-speed mixer, and respectively putting all the weighed antioxidant and weather-resistant agent into the high-speed mixer to carry out the fourth stirring and mixing treatment for 1-2 minutes; f. after the fourth stirring and mixing treatment is finished, properly slowing down the stirring speed, and putting all the weighed odor adsorbents into a high-speed mixer for fifth stirring and mixing treatment, wherein the stirring time is 8-10 minutes; g. after the fifth stirring and mixing treatment is finished, putting the mixed powder into a low-speed mixer for low-speed stirring treatment, wherein the integral temperature of the powder is reduced to 40-60 ℃ during low-speed stirring to be the best, and the reactor core temperature of the powder material pile is lower than 80 ℃; h. putting the powder stirred by the low-speed mixer into a parallel counter-rotating double-screw granulator, and extruding and granulating the powder by the parallel counter-rotating double-screw granulator to obtain PVC modified particles; i. pumping PVC modified particles obtained after extrusion and granulation by a parallel counter-rotating twin-screw granulator into a vacuum pan, wherein the air pressure value in the vacuum pan is negative one atmosphere, the PVC modified particles are continuously boiled and rolled in the vacuum pan, and the processing time is 15 minutes; j. putting the PVC modified particles treated by the vacuum pan into a single-screw extruder, and extruding and molding a drain pipe main body by the single-screw extruder; when the single-screw extruder extrudes and forms the drain pipe main body, the temperature of each heating section is 140-170 ℃, the head temperature of the single-screw extruder is lower than 180 ℃, and the extrusion speed is 850 m/min. Through the material proportion and the process design, the polyvinyl chloride plastic automobile skylight drain pipe has the advantages of low odor, low VOC and high cost performance.

The invention has the following beneficial effects: the invention relates to a preparation and assembly method of a polyvinyl chloride plastic automobile skylight drain pipe, which comprises the following process steps: step 1, preparing PVC modified particles; the preparation method of the PVC modified particles comprises the following steps: step 11, accurately weighing the following materials in percentage by weight: 52 to 58 percent of three-type PVC powder, 32 to 41 percent of DINP plasticizer, 1.5 to 1.7 percent of epoxy soybean oil plasticizer, 2.6 to 3 percent of calcium-zinc stabilizer, 2.4 to 2.9 percent of odor adsorbent, 0 to 8 percent of calcium carbonate, 0.05 percent of antioxidant and 0.05 percent of weather-resistant agent; step 12, respectively putting half of the weighed DINP type plasticizer, all the three types of PVC powder and all the calcium-zinc stabilizer into a high-speed mixer for primary stirring and mixing treatment, wherein the stirring time is 10-12 minutes, and the stirring temperature is 80-90 ℃; step 13, after the first stirring and mixing treatment is finished, respectively putting the other half of the weighed DINP type plasticizer and all the epoxy soybean oil type plasticizers into a high-speed mixer for second stirring and mixing treatment, wherein the stirring time is 10-12 minutes, and the stirring temperature is 110-120 ℃; step 14, after the second stirring and mixing treatment is finished, putting all the weighed calcium carbonate into a high-speed mixer for third stirring and mixing treatment, wherein the stirring time is 8-10 minutes, and the stirring temperature is 110-120 ℃; step 15, after the third stirring and mixing treatment is finished, stopping heating in the high-speed mixer, and respectively putting all the weighed antioxidant and weather-resistant agent into the high-speed mixer to carry out the fourth stirring and mixing treatment for 1-2 minutes; step 16, after the fourth stirring and mixing treatment is finished, properly slowing down the stirring speed, and putting all the weighed odor adsorbents into a high-speed mixer for fifth stirring and mixing treatment, wherein the stirring time is 8-10 minutes; step 17, after the fifth stirring and mixing treatment is finished, putting the mixed powder into a low-speed mixer for low-speed stirring treatment, wherein the integral temperature of the powder is reduced to 40-60 ℃ during low-speed stirring, and the reactor core temperature of the powder material pile is lower than 80 ℃; 18, putting the powder stirred by the low-speed mixer into a parallel counter-rotating double-screw granulator, and extruding and granulating the powder by the parallel counter-rotating double-screw granulator to obtain PVC modified particles; step 2, PVC modified particle pretreatment step: pumping PVC modified particles obtained after extrusion and granulation by a parallel counter-rotating twin-screw granulator into a vacuum pan, wherein the air pressure value in the vacuum pan is negative one atmosphere, the PVC modified particles are continuously boiled and rolled in the vacuum pan, and the processing time is 15 minutes; step 3, extrusion molding of the drain pipe main body: putting the PVC modified particles treated by the vacuum pan into a single-screw extruder, and extruding and molding a drain pipe main body by the single-screw extruder; when the single-screw extruder extrudes and forms the drain pipe main body, the temperature of each heating section is as follows in sequence: 140-150 ℃ in the first zone, 145-155 ℃ in the second zone, 150-160 ℃ in the third zone, 155-165 ℃ in the fourth zone, 160-170 ℃ in the fifth zone, 155-165 ℃ in the sixth zone and 150-160 ℃ in the seventh zone, wherein the head temperature of the single-screw extruder is lower than 180 ℃, and the extrusion speed is 850 m/min; when the drainage pipe main body is continuously extruded and molded by the single-screw extruder, the inner diameter and the outer diameter of the drainage pipe main body are monitored in real time by the sizing instrument; step 4, cutting the drain pipe main body: the drain pipe main body continuously extruded and molded by the single-screw extruder is sent to a fixed-length cutting machine for cutting operation, and the fixed-length cutting machine cuts the continuous drain pipe main body into the drain pipe main body with the specified length; step 5, assembling a drain pipe joint and a fixing buckle: the assembling steps of the drain pipe joint and the fixed buckle adopt the automatic assembling device of the joint and the buckle to complete the assembling operation of the drain pipe joint and the fixed buckle so as to obtain a finished product of the automobile skylight drain pipe. Through the design of the steps, the preparation and assembly method of the polyvinyl chloride plastic automobile skylight drain pipe can effectively complete the preparation and assembly of the polyvinyl chloride plastic automobile skylight drain pipe, and the prepared automobile skylight drain pipe has the advantages of low odor, low VOC and high cost performance.

Drawings

The invention will be further described with reference to the drawings to which, however, the embodiments shown in the drawings do not constitute any limitation.

FIG. 1 is a schematic structural view of the polyvinyl chloride plastic sunroof drain pipe of the present invention.

Fig. 2 is a schematic structural view of the automatic assembling device for a connector and a buckle of the present invention.

Fig. 3 is a schematic structural view of the automatic joint feeding mechanism of the present invention.

Fig. 4 is a schematic structural view of the snap-fit assembly of the present invention.

Fig. 5 is a schematic structural view of the body clamp assembly of the present invention.

Fig. 6 is a schematic structural view of the automatic material blocking assembly of the present invention.

Fig. 1 to 6 include:

11-drain pipe main body 12-drain pipe joint

13-fixed buckle 2-frame

21-fixed mounting plate 3-main body positioning and placing assembly

31-positioning and placing installation rack 32-fixing and positioning plate

321-fixed positioning slot 33-movable positioning plate

331-movable positioning slot 34-positioning plate driving cylinder

41-joint automatic feeding mechanism 411-joint feeding vibration disk

412-connector feeding guide frame 4121-connector feeding guide groove

413-connector feeding vertical vibration device 414-connector receiving mounting frame

415-joint bearing block 4151-snap bearing groove

416-joint receiving driving cylinder 42-joint grabbing and mounting mechanism

421-manipulator mounting base 422-four-shaft manipulator

5-body clamping Assembly 51-body clamping mounting

52-main body clamping driving cylinder 53-main body clamping movable frame

54-main body clamping air claw 61-buckle automatic feeding mechanism

611-buckle feeding vibration disk 612-buckle feeding guide frame

6121 fastener feeding guide groove 613 fastener feeding vertical vibration device

614-Snap receiving mounting bracket 615-Snap receiving Block

6151-buckle receiving groove 616-buckle receiving driving cylinder

62-buckle grabbing and mounting mechanism 621-buckle grabbing and mounting frame

622-horizontal driving linear module 623-horizontal movable frame

624-lifting driving linear module 625-lifting movable frame

626-buckling and grabbing pneumatic claw 7-automatic material blocking assembly

71 material blocking mounting frame 72 material blocking driving cylinder

73-a material blocking movable frame 74-a material blocking plate.

Detailed Description

The present invention will be described below with reference to specific embodiments.

As shown in fig. 1, a polyvinyl chloride plastic sunroof drain pipe comprises a hollow circular pipe-shaped drain pipe body 11, a drain pipe joint 12 is inserted into a front end portion of a center hole of the drain pipe body 11, a drain pipe joint 12 is also inserted into a rear end portion of the center hole of the drain pipe body 11, a fixing buckle 13 is clamped in a middle portion of the drain pipe body 11, and the drain pipe body 11 comprises the following materials in percentage by weight:

52 to 58 percent of three-type PVC powder

DINP type plasticizer 32-41%

1.5 to 1.7 percent of epoxy soybean oil type plasticizer

2.6 to 3 percent of calcium-zinc stabilizer

2.4 to 2.9 percent of odor adsorbent

0 to 8 percent of calcium carbonate

0.05 percent of antioxidant

0.05 percent of weather resistant agent;

the drain pipe main body 11 of the polyvinyl chloride plastic automobile skylight drain pipe is prepared by adopting the following process, and specifically comprises the following steps:

a. accurately weighing the materials according to the weight percentage of the materials contained in the drain pipe main body 11;

j. putting the PVC modified particles treated by the vacuum pan into a single-screw extruder, and extruding and molding the drainage pipe main body 11 by the single-screw extruder; when the single-screw extruder extrudes and forms the drain pipe main body 11, the temperature of each heating section is 140-170 ℃, the head temperature of the single-screw extruder is lower than 180 ℃, and the extrusion speed is 850 m/min.

Preferably, the drain pipe body 11 comprises the following materials by weight percentage:

53 to 56 percent of three-type PVC powder

34% -38% of DINP plasticizer

1.5 to 1.7 percent of epoxy soybean oil type plasticizer

2.6 to 3 percent of calcium-zinc stabilizer

2.4 to 2.9 percent of odor adsorbent

2 to 6 percent of calcium carbonate

0.05 percent of antioxidant

0.05 percent of weather resistant agent.

Further preferably, the drain pipe body 11 comprises the following materials by weight percentage:

52 percent of three-type PVC powder

DINP type plasticizer 40%

Epoxy soybean oil type plasticizer 1.5%

2.6 percent of calcium zinc stabilizer

Odor adsorbent 2.4%

1 percent of calcium carbonate

0.05 percent of antioxidant

0.05 percent of weather resistant agent;

or, the drain pipe main body 11 comprises the following materials by weight percent:

54 percent of three-type PVC powder

DINP type plasticizer 34.5%

Epoxy soybean oil type plasticizer 1.5%

3 percent of calcium-zinc stabilizer

Odor adsorbent 2.9%

Calcium carbonate 4%

0.05 percent of antioxidant

0.05 percent of weather resistant agent;

the drain pipe main body 11 comprises the following materials in percentage by weight:

58 percent of three-type PVC powder

DINP type plasticizer 32%

Epoxy soybean oil type plasticizer 1.7%

3 percent of calcium-zinc stabilizer

Odor adsorbent 2.5%

3 percent of calcium carbonate

0.05 percent of antioxidant

0.05 percent of weather resistant agent.

For the drain pipe main body 11 adopting the special material proportion, the drain pipe main body has the advantages of low odor, low VOC and high cost performance; therefore, the polyvinyl chloride plastic automobile skylight drain pipe has the advantages of low odor, low VOC and high cost performance.

step 3, extrusion molding of the drain pipe main body 11: putting the PVC modified particles treated by the vacuum pan into a single-screw extruder, and extruding and molding the drainage pipe main body 11 by the single-screw extruder; when the single-screw extruder extrudes and forms the drain pipe main body 11, the temperature of each heating section is as follows in sequence: : 140-150 ℃ in the first zone, 145-155 ℃ in the second zone, 150-160 ℃ in the third zone, 155-165 ℃ in the fourth zone, 160-170 ℃ in the fifth zone, 155-165 ℃ in the sixth zone and 150-160 ℃ in the seventh zone, wherein the head temperature of the single-screw extruder is lower than 180 ℃, and the extrusion speed is 850 m/min; when the drainage pipe main body 11 is continuously extruded and molded by the single-screw extruder, the inner diameter and the outer diameter of the drainage pipe main body 11 are monitored in real time by the sizing instrument;

step 4, cutting the drain pipe main body 11: the drain pipe main body 11 continuously extruded and formed by the single screw extruder is sent to a fixed-length cutting machine for cutting operation, and the fixed-length cutting machine cuts the continuous drain pipe main body 11 into the drain pipe main body 11 with a specified length;

step 5, assembling the drain pipe joint 12 and the fixing buckle 13: in the step of assembling the drain pipe joint 12 and the fixed buckle 13, the automatic assembling device for the joint and the buckle is adopted to complete the assembling operation of the drain pipe joint 12 and the fixed buckle 13 so as to obtain a finished product of the automobile skylight drain pipe.

It should be noted that, as shown in fig. 2, the automatic connector and buckle assembling device includes a frame 2, a fixed mounting plate 21 horizontally and transversely disposed is installed at the upper end of the frame 2, the fixed mounting plate 21 is installed with a main body positioning and placing assembly 3, a left connector mounting assembly located at the left end side of the main body positioning and placing assembly 3, and a right connector mounting assembly located at the right end side of the main body positioning and placing assembly 3; the main body positioning and placing assembly 3 comprises a positioning and placing mounting frame 31 which is screwed and fastened on the upper surface of the fixed mounting plate 21, at least two fixed positioning plates 32 which are sequentially aligned from left to right and are arranged at intervals are screwed on the upper end part of the positioning and placing mounting frame 31, a fixed positioning groove 321 which completely penetrates from left to right and is opened upwards is respectively arranged in the middle position of the upper surface of each fixed positioning plate 32, each fixed positioning groove 321 is a semicircular groove, and the diameter value of each fixed positioning groove 321 is equal to the outer diameter value of the drain pipe main body 11; the upper end side of each fixed positioning plate 32 is respectively provided with a movable positioning plate 33 which can relatively rotate, the rear end part of each movable positioning plate 33 is respectively hinged with the rear end part of the corresponding fixed positioning plate 32, a positioning plate driving air cylinder 34 is respectively arranged between each movable positioning plate 33 and the corresponding fixed positioning plate 32, the cylinder body of each positioning plate driving air cylinder 34 is respectively hinged at the rear end part of the corresponding fixed positioning plate 32 through a pivot, and the extending end part of the piston rod of each positioning plate driving air cylinder 34 is respectively hinged at the rear end part of the corresponding movable positioning plate 33 through a pivot; each movable positioning plate 33 is provided with a left and a right movable positioning slot 331 which are completely penetrated, when the movable positioning plate 33 is closed with the corresponding fixed positioning plate 32, the movable positioning slots 331 are aligned with the fixed positioning slots 321, and the movable positioning slots 331 and the fixed positioning slots 321 form a main body positioning hole with an inner diameter value equal to the outer diameter value of the drain pipe main body 11.

Further, as shown in fig. 2, the fixed mounting plate 21 is provided with a main body clamping assembly 5 and a buckle mounting assembly between two adjacent fixed positioning plates 32; as shown in fig. 2 and 6, an automatic material blocking assembly 7 is arranged at the right end side of the rightmost fixed positioning plate 32 of the fixed mounting plate 21, the automatic material blocking assembly 7 comprises a material blocking mounting frame 71 which is screwed and fastened on the upper surface of the fixed mounting plate 21, a material blocking driving cylinder 72 which horizontally moves forwards and backwards is screwed at the upper end of the material blocking mounting frame 71, a material blocking movable frame 73 is arranged at the extending end part of a piston rod of the material blocking driving cylinder 72, and a material blocking plate 74 which is vertically arranged and extends along the front and back directions is screwed on the material blocking movable frame 73; when the striker plate 74 moves rearward to the limit position, the striker plate 74 contacts with the right end surface of the rightmost fixed positioning block and the striker plate 74 blocks the right end opening of the fixed positioning slot 321 of the rightmost fixed positioning block.

It should be explained that, as shown in fig. 2, the left side joint installation component and the right side joint installation component respectively include a joint automatic feeding mechanism 41 and a joint grabbing and installing mechanism 42; as shown in fig. 2 and 3, the automatic joint feeding mechanism 41 includes a joint feeding vibration plate 411 installed on the upper surface of the fixed mounting plate 21, a joint feeding guide frame 412 is installed at a discharge port of the joint feeding vibration plate 411, the joint feeding guide frame 412 is provided with a joint feeding guide groove 4121 completely penetrating along the discharge direction of the drain pipe joint 12, a joint feeding straight vibration device 413 is installed on the lower end side of the joint feeding guide frame 412 on the upper surface of the fixed mounting plate 21, and the joint feeding guide frame 412 is installed on the upper end of the joint feeding straight vibration device 413; the fixed mounting frame is provided with a joint bearing mounting frame 414 beside the joint feeding straight vibration device 413, the upper end part of the joint bearing mounting frame 414 is provided with a joint bearing block 415 relatively horizontally and movably, the joint bearing block 415 is provided with a joint bearing groove 4151, the joint bearing mounting frame 414 is provided with a horizontally-acting joint bearing driving air cylinder 416 corresponding to the joint bearing block 415, and the extending end part of a piston rod of the joint bearing driving air cylinder 416 is connected with the joint bearing block 415; when the splice receiving block 415 is in the initial position, the splice receiving groove 4151 of the splice receiving block 415 aligns with the splice loading guide groove 4121 of the splice loading guide frame 412. As shown in fig. 2, the joint grabbing and mounting mechanism 42 includes a manipulator mounting seat 421 screwed to the upper surface of the fixed mounting plate 21, a four-axis manipulator 422 screwed to the upper end of the manipulator mounting seat 421, and a joint grabbing claw mounted at the driving end of the four-axis manipulator 422.

For the left and right side joint mounting assembly of the present invention, during operation, the joint feeding vibration disk 411 orderly sends out the drain pipe joints 12, and the drain pipe joints 12 sent out by the joint feeding vibration disk 411 orderly enter the joint feeding guide groove 4121 of the joint feeding guide frame 412, the drain pipe joint 12 positioned at the foremost end of the joint feeding guide groove 4121 first enters the joint receiving groove 4151 of the joint receiving plate, then the joint receiving driving cylinder 416 acts and the joint receiving driving cylinder 416 pushes the joint receiving plate to move, and the joint receiving plate brings the drain pipe joint 12 to the grabbing position; it should be explained that when the fitting receiving groove 4151 of the fitting receiving plate moves and deviates from the fitting loading guide groove 4121, the fitting receiving plate remains in contact with the fitting loading guide 412 to prevent the subsequent drain fitting 12 from moving out of the fitting loading guide groove 4121; when the joint receiving plate is returned to the initial position, the drain joint 12 in the joint feeding guide groove 4121 enters the joint receiving groove 4151 again. After the drain pipe joint 12 moves to the grabbing position, the four-axis manipulator 422 drives the joint grabbing pneumatic claw to move and grab the drain pipe joint 12, and then the four-axis manipulator 422 drives the joint grabbing pneumatic claw to move and inserts the drain pipe joint 12 into the central hole of the drain pipe main body 11, so that the plug-in mounting operation of the drain pipe joint 12 is completed.

As shown in fig. 2 and 5, the body clamp assembly 5 includes a body clamp mounting bracket 51 screwed to the upper surface of the fixed mounting plate 21, a body clamp driving cylinder 52 horizontally moving forward and backward is mounted on the upper end of the body clamp mounting bracket 51, a body clamp movable bracket 53 is mounted on the piston rod extending end of the body clamp driving cylinder 52, and two body clamp air jaws 54 spaced left and right are mounted on the body clamp movable bracket 53.

Also, as shown in fig. 2, the snap-fitting assembly includes a snap automatic feeding mechanism 61 and a snap catching and mounting mechanism 62. As shown in fig. 2 and 4, the automatic buckle feeding mechanism 61 includes a buckle feeding vibration plate 611 installed on the upper surface of the fixed mounting plate 21, a buckle feeding guide frame 612 is installed at a discharge port of the buckle feeding vibration plate 611, the buckle feeding guide frame 612 is provided with a buckle feeding guide slot 6121 completely penetrating along the sending direction of the fixed buckle 13, a buckle feeding straight vibration device 613 is installed on the lower end side of the buckle feeding guide frame 612 on the upper surface of the fixed mounting plate 21, and the buckle feeding guide frame 612 is installed on the upper end of the buckle feeding straight vibration device 613; the fixed mounting frame is provided with a buckle bearing mounting frame 614 at the side of the buckle loading straight vibration device 613, the upper end part of the buckle bearing mounting frame 614 is provided with a buckle bearing block 615 in a relatively horizontal movable manner, the buckle bearing block 615 is provided with a buckle bearing groove 6151, the buckle bearing mounting frame 614 is provided with a horizontally-acting buckle bearing driving cylinder 616 corresponding to the buckle bearing block 615, and the extending end part of a piston rod of the buckle bearing driving cylinder 616 is connected with the buckle bearing block 615; when the snap receiving block 615 is in the initial position, the snap receiving groove 6151 of the snap receiving block 615 aligns with the snap loading guide groove 6121 of the snap loading guide frame 612. As shown in fig. 2 and 4, the buckle grabbing and mounting mechanism 62 includes a buckle grabbing mounting frame 621 screwed on the upper surface of the fixed mounting plate 21, a horizontal driving linear module 622 horizontally moving back and forth is installed at the upper end of the buckle grabbing mounting frame 621, a horizontal movable frame 623 is installed at the driving end of the horizontal driving linear module 622, a lifting driving linear module 624 vertically moving is installed on the horizontal movable frame 623, a lifting movable frame 625 is installed at the driving end of the lifting driving linear module 624, and a buckle grabbing pneumatic claw 626 is installed on the lifting movable frame 625.

For the buckle mounting assembly of the present invention, during operation, the buckle feeding vibration disk 611 orderly sends out the fixed buckles 13, and the fixed buckles 13 sent out by the buckle feeding vibration disk 611 orderly enter the buckle feeding guide grooves 6121 of the buckle feeding guide frame 612, the fixed buckle 13 located at the foremost end of the buckle feeding guide grooves 6121 first enters the buckle receiving groove 6151 of the buckle receiving plate, then the buckle receiving driving cylinder 616 acts and the buckle receiving driving cylinder 616 pushes the buckle receiving plate to move, and the buckle receiving plate brings the fixed buckles 13 to the grabbing position; it should be explained that when the buckle receiving groove 6151 of the buckle receiving plate moves and deviates from the buckle feeding guide groove 6121, the buckle receiving plate still keeps contacting with the buckle feeding guide frame 612 to prevent the subsequent fixed buckle 13 from moving out of the buckle feeding guide groove 6121; when the clip receiving plate is reset to the initial position, the fixed clip 13 in the clip loading guide groove 6121 enters the clip receiving groove 6151 again. After the fixed buckle 13 moves to the grabbing position, the lifting driving linear module 624 drives the buckle grabbing air claw 626 to move downwards and grab the fixed buckle 13, then the lifting driving linear module 624 moves upwards and lifts the fixed buckle 13 grabbed by the buckle grabbing air claw 626, then the horizontal driving linear module 622 drives the horizontal movable frame 623, the lifting driving linear module 624, the buckle grabbing air claw 626 and the fixed buckle 13 to move horizontally, the fixed buckle 13 moves to the upper part of the drain pipe main body 11, and finally the lifting driving linear module 624 moves and pushes the fixed buckle 13 downwards, so that the fixed buckle 13 is sleeved and clamped on the drain pipe main body 11, and the installation of the fixed buckle 13 is completed.

Preferably, in step 11, the following materials are accurately weighed according to the weight percentage: 53-56% of three-type PVC powder, 34-38% of DINP plasticizer, 1.5-1.7% of epoxy soybean oil plasticizer, 2.6-3% of calcium-zinc stabilizer, 2.4-2.9% of odor adsorbent, 2-6% of calcium carbonate, 0.05% of antioxidant and 0.05% of weather-resistant agent.

Further preferably, in step 11, the following materials are accurately weighed according to the weight percentage: 54 percent of three-type PVC powder, 34.5 percent of DINP type plasticizer, 1.5 percent of epoxy soybean oil type plasticizer, 3 percent of calcium-zinc stabilizer, 2.9 percent of odor adsorbent, 4 percent of calcium carbonate, 0.05 percent of antioxidant and 0.05 percent of weather-resistant agent; or, in step 11, accurately weighing the following materials in percentage by weight: 52% of three-type PVC powder, 40% of DINP type plasticizer, 1.5% of epoxy soybean oil type plasticizer, 2.6% of calcium-zinc stabilizer, 2.4% of odor adsorbent, 1% of calcium carbonate, 0.05% of antioxidant and 0.05% of weather-resistant agent; or, in step 11, accurately weighing the following materials in percentage by weight: 58% of three-type PVC powder, 32% of DINP type plasticizer, 1.7% of epoxy soybean oil type plasticizer, 3% of calcium-zinc stabilizer, 2.5% of odor adsorbent, 3% of calcium carbonate, 0.05% of antioxidant and 0.05% of weather resisting agent.

The automatic connector and buckle assembling device of the present invention will be described in detail below according to specific operation procedures, specifically: when a worker places the drain pipe main body 11 in front of the main body positioning and placing assembly 3, the material blocking driving cylinder 72 acts and the material blocking driving cylinder 72 pushes the material blocking movable frame 73 backwards, the material blocking movable frame 73 which moves backwards drives the material blocking plate 74 to synchronously move backwards, when the material blocking plate 74 moves backwards to a limit position, the material blocking plate 74 is in contact with the right end face of the rightmost fixed positioning block, the material blocking plate 74 blocks the right end opening of the fixed positioning groove 321 of the rightmost fixed positioning block, and at the moment, the material blocking plate 74 plays a role in limiting material blocking; after the material baffle 74 moves backwards to the right, a worker places the drain pipe main body 11 in the main body positioning and placing assembly 3, the drain pipe main body 11 is placed in the fixing positioning grooves 321 of the fixing positioning plates 32, the drain pipe main body 11 abuts against the material baffle 74, and the material baffle 74 limits the drain pipe, so that the worker can quickly and accurately place the drain pipe in the fixing positioning grooves 321 of the fixing positioning plates 32, wherein the right end surface of the drain pipe main body 11 is flush with the right end surface of the rightmost fixing positioning plate 32, and the left end surface of the drain pipe main body 11 is flush with the left end surface of the leftmost fixing positioning plate 32; after the drain pipe main body 11 is accurately placed in the fixed positioning groove 321 of the fixed positioning plate 32, each positioning plate driving cylinder 34 acts, each positioning plate driving cylinder 34 pushes the corresponding movable positioning plate 33 respectively, each movable positioning plate 33 is closed with the corresponding fixed positioning plate 32, a main body positioning hole formed after the fixed positioning plate 32 is closed with the corresponding movable positioning plate 33 positions the drain pipe main body 11, and the fixed positioning plate 32 is matched with the corresponding movable positioning plate 33 and clamps the corresponding part of the drain pipe main body 11, so that the end part of the drain pipe main body 11 is ensured to be bent and deformed when the drain pipe joint 12 is subsequently inserted; after each movable positioning plate 33 is closed, the striker driving cylinder 72 drives the striker plate 74 to move forward and enables the striker plate 74 to move away from the right end face of the rightmost fixed positioning plate 32, the main body clamping driving cylinder 52 acts and the main body clamping driving cylinder 52 pushes the main body clamping movable frame 53 to move, the main body clamping movable frame 53 drives the two main body clamping air claws 54 to move to the position of the drain pipe main body 11, the drain pipe main body 11 is clamped by the two main body clamping air claws 54, the two main body clamping air claws 54 are arranged at intervals left and right and clamp two positions of the drain pipe main body 11, the fixed buckle 13 is installed between the two main body clamping air claws 54, and when the subsequent fixed buckle 13 is installed, the two main body clamping air claws 54 arranged at intervals left and right can effectively pull the drain pipe main body 11 and ensure the installation stability; after the drainage pipe body 11 is clamped by the body clamping air claws 54, the left joint mounting assembly inserts the drainage pipe joint 12 to the left end part of the central hole of the drainage pipe body 11, the right joint mounting assembly inserts the drainage pipe joint 12 to the right end part of the central hole of the drainage pipe body 11, and the buckle mounting assembly mounts the fixed buckle 13 on the drainage pipe body 11; after the drain pipe joint 12 and the fixing buckle 13 are mounted, the main body clamping assembly 5 is reset, the movable positioning plates 33 are opened upwards, and the finished automobile skylight drain pipe product with the assembled drain pipe joint 12 and the assembled fixing buckle 13 is taken out of the fixing positioning groove 321 of the fixing positioning plate 32 by a worker. It should be emphasized that the automatic joint and buckle assembling device of the present invention can efficiently and automatically complete the assembling operation of the drain pipe joint 12 and the fixed buckle 13, and has the advantages of novel design, high automation degree and high working efficiency.

According to the conditions, the preparation and assembly method of the polyvinyl chloride plastic automobile skylight drain pipe can effectively complete the preparation and assembly of the polyvinyl chloride plastic automobile skylight drain pipe, and the prepared automobile skylight drain pipe has the advantages of low odor, low VOC and high cost performance.

The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.

Claims

1. The utility model provides a polyvinyl chloride plastics sunroof drain pipe, is including being drain pipe main part (11) of cavity pipe shape, and the cartridge has drain pipe joint (12) before the centre bore of drain pipe main part (11), and the also cartridge of tip has drain pipe joint (12) behind the centre bore of drain pipe main part (11), and the middle part cover card of drain pipe main part (11) has fixed buckle (13), its characterized in that, drain pipe main part (11) are specific including the material of following weight percent:

52 to 58 percent of three-type PVC powder

DINP type plasticizer 32-41%

1.5 to 1.7 percent of epoxy soybean oil type plasticizer

2.6 to 3 percent of calcium-zinc stabilizer

2.4 to 2.9 percent of odor adsorbent

0 to 8 percent of calcium carbonate

0.05 percent of antioxidant

0.05 percent of weather resistant agent;

the drain pipe main body (11) of the polyvinyl chloride plastic automobile skylight drain pipe is prepared by adopting the following process, and specifically comprises the following steps:

a. accurately weighing the materials according to the weight percentage of the materials contained in the drain pipe main body (11);

j. putting the PVC modified particles treated by the vacuum pan into a single-screw extruder, and extruding and molding a drain pipe main body (11) by the single-screw extruder; when the single-screw extruder extrudes and forms the drain pipe body (11), the temperature of each heating section is 140-170 ℃, the head temperature of the single-screw extruder is lower than 180 ℃, and the extrusion speed is 850 m/min.

2. The polyvinyl chloride plastic automobile skylight drain pipe according to claim 1, wherein the drain pipe body (11) comprises the following materials by weight percent:

53 to 56 percent of three-type PVC powder

34% -38% of DINP plasticizer

1.5 to 1.7 percent of epoxy soybean oil type plasticizer

2.6 to 3 percent of calcium-zinc stabilizer

2.4 to 2.9 percent of odor adsorbent

2 to 6 percent of calcium carbonate

0.05 percent of antioxidant

0.05 percent of weather resistant agent.

3. The polyvinyl chloride plastic sunroof drain pipe according to claim 2, wherein the drain pipe body (11) comprises the following materials in percentage by weight:

54 percent of three-type PVC powder

DINP type plasticizer 34.5%

Epoxy soybean oil type plasticizer 1.5%

3 percent of calcium-zinc stabilizer

Odor adsorbent 2.9%

Calcium carbonate 4%

0.05 percent of antioxidant

0.05 percent of weather resistant agent.

4. The preparation and assembly method of the polyvinyl chloride plastic automobile skylight drain pipe is characterized by comprising the following process steps:

step 3, extrusion molding of the drain pipe main body (11): putting the PVC modified particles treated by the vacuum pan into a single-screw extruder, and extruding and molding a drain pipe main body (11) by the single-screw extruder; when the single-screw extruder extrudes and forms the drain pipe main body (11), the temperature of each heating section is as follows in sequence: 140-150 ℃ in the first zone, 145-155 ℃ in the second zone, 150-160 ℃ in the third zone, 155-165 ℃ in the fourth zone, 160-170 ℃ in the fifth zone, 155-165 ℃ in the sixth zone and 150-160 ℃ in the seventh zone, wherein the head temperature of the single-screw extruder is lower than 180 ℃, and the extrusion speed is 850 m/min; when the drainage pipe main body (11) is continuously extruded and molded by the single-screw extruder, the inner diameter and the outer diameter of the drainage pipe main body (11) are monitored in real time by the sizing instrument;

step 4, cutting the drain pipe main body (11): the drain pipe main body (11) which is continuously extruded and formed by the single-screw extruder is sent to a fixed-length cutting machine for cutting operation, and the fixed-length cutting machine cuts the continuous drain pipe main body (11) into a drain pipe main body with a specified length;

step 5, assembling a drain pipe joint (12) and a fixing buckle (13): in the step of assembling the drain pipe joint (12) and the fixed buckle (13), the automatic assembling device for the joint and the buckle is adopted to complete the assembling operation of the drain pipe joint (12) and the fixed buckle (13) so as to obtain a finished product of the drain pipe of the automobile skylight;

the automatic assembling device for the connector and the buckle comprises a rack (2), wherein a fixed mounting plate (21) which is horizontally and transversely arranged is arranged at the upper end of the rack (2), a main body positioning and placing assembly (3), a left connector mounting assembly positioned on the left end side of the main body positioning and placing assembly (3) and a right connector mounting assembly positioned on the right end side of the main body positioning and placing assembly (3) are arranged on the fixed mounting plate (21); the main body positioning and placing assembly (3) comprises a positioning and placing mounting frame (31) which is screwed and fastened on the upper surface of the fixed mounting plate (21), at least two fixed positioning plates (32) which are sequentially aligned from left to right and are arranged at intervals are screwed on the upper end part of the positioning and placing mounting frame (31), the middle position of the upper surface of each fixed positioning plate (32) is respectively provided with a fixed positioning groove (321) which completely penetrates from left to right and is opened upwards, each fixed positioning groove (321) is a semicircular groove, and the diameter value of each fixed positioning groove (321) is equal to the outer diameter value of the drain pipe main body (11); the upper end side of each fixed positioning plate (32) is respectively provided with a movable positioning plate (33) in a relatively rotatable manner, the rear end part of each movable positioning plate (33) is respectively hinged with the rear end part of the corresponding fixed positioning plate (32), a positioning plate driving air cylinder (34) is respectively arranged between each movable positioning plate (33) and the corresponding fixed positioning plate (32), the cylinder body of each positioning plate driving air cylinder (34) is respectively hinged at the rear end part of the corresponding fixed positioning plate (32) through a pivot, and the extending end part of the piston rod of each positioning plate driving air cylinder (34) is respectively hinged at the rear end part of the corresponding movable positioning plate (33) through a pivot; each movable positioning plate (33) is respectively provided with a movable positioning groove (331) which completely penetrates from left to right, when the movable positioning plate (33) is closed with the corresponding fixed positioning plate (32), the movable positioning groove (331) is aligned with the fixed positioning groove (321), and the movable positioning groove (331) and the fixed positioning groove (321) form a main body positioning hole with the inner diameter value equal to the outer diameter value of the drain pipe main body (11);

the automatic material stopping device is characterized in that a main body clamping assembly (5) and a buckle mounting assembly are arranged between two adjacent fixed positioning plates (32) on the fixed mounting plate (21), an automatic material stopping assembly (7) is arranged on the right end side of the rightmost fixed positioning plate (32) on the fixed mounting plate (21), the automatic material stopping assembly (7) comprises a material stopping mounting frame (71) which is screwed and fixed on the upper surface of the fixed mounting plate (21), a material stopping driving cylinder (72) which horizontally moves forwards and backwards is screwed at the upper end of the material stopping mounting frame (71), a material stopping movable frame (73) is arranged at the extending end of a piston rod of the material stopping driving cylinder (72), and material stopping plates (74) which are vertically arranged and extend in the front-back direction are screwed on the material stopping movable frame (73; when the striker plate (74) moves backwards to the limit position, the striker plate (74) is in contact with the right end face of the rightmost fixed positioning block, and the striker plate (74) blocks the right end opening of the fixed positioning groove (321) of the rightmost fixed positioning block.

5. The preparation and assembly method of the polyvinyl chloride plastic automobile skylight drain pipe according to claim 4, characterized by comprising the following steps: the left joint mounting assembly and the right joint mounting assembly respectively comprise an automatic joint feeding mechanism (41) and a joint grabbing and mounting mechanism (42);

the automatic joint feeding mechanism (41) comprises a joint feeding vibration disc (411) arranged on the upper surface of the fixed mounting plate (21), a joint feeding guide frame (412) is arranged at a discharge port of the joint feeding vibration disc (411), the joint feeding guide frame (412) is provided with a joint feeding guide groove (4121) which completely penetrates along the discharge direction of the drainage pipe joint (12), a joint feeding straight vibration device (413) is arranged on the lower end side of the joint feeding guide frame (412) on the upper surface of the fixed mounting plate (21), and the joint feeding guide frame (412) is arranged on the upper end of the joint feeding straight vibration device (413); the joint bearing mounting frame (414) is arranged beside the joint feeding vertical vibration device (413) on the fixed mounting frame, a joint bearing block (415) is arranged at the upper end part of the joint bearing mounting frame (414) in a relatively horizontal movable mode, a joint bearing groove (4151) is formed in the joint bearing block (415), a horizontally-acting joint bearing driving cylinder (416) is arranged on the joint bearing mounting frame (414) corresponding to the joint bearing block (415), and the extending end part of a piston rod of the joint bearing driving cylinder (416) is connected with the joint bearing block (415); when the connector receiving block (415) is at the initial position, the connector receiving groove (4151) of the connector receiving block (415) is aligned with the connector feeding guide groove (4121) of the connector feeding guide frame (412);

the joint grabbing and mounting mechanism (42) comprises a manipulator mounting seat (421) which is screwed on the upper surface of the fixed mounting plate (21), a four-axis manipulator (422) is screwed on the upper end part of the manipulator mounting seat (421), and a joint grabbing air claw is arranged at the driving end of the four-axis manipulator (422).

6. The preparation and assembly method of the polyvinyl chloride plastic automobile skylight drain pipe according to claim 5, characterized by comprising the following steps: the main body clamping assembly (5) comprises a main body clamping mounting frame (51) which is screwed on the upper surface of the fixed mounting plate (21), a main body clamping driving cylinder (52) which horizontally moves forwards and backwards is arranged at the upper end part of the main body clamping mounting frame (51), a main body clamping movable frame (53) is arranged at the extending end part of a piston rod of the main body clamping driving cylinder (52), and two main body clamping air claws (54) which are arranged at left and right intervals are arranged on the main body clamping movable frame (53).

7. The preparation and assembly method of the polyvinyl chloride plastic automobile skylight drain pipe according to claim 6, characterized by comprising the following steps: the buckle mounting assembly comprises an automatic buckle feeding mechanism (61) and a buckle grabbing and mounting mechanism (62);

the buckle automatic feeding mechanism (61) comprises a buckle feeding vibration disc (611) arranged on the upper surface of the fixed mounting plate (21), a buckle feeding guide frame (612) is arranged at a discharge port of the buckle feeding vibration disc (611), a buckle feeding guide groove (6121) which completely penetrates along the sending direction of the fixed buckle (13) is formed in the buckle feeding guide frame (612), a buckle feeding straight vibration device (613) is arranged on the lower end side of the buckle feeding guide frame (612) on the upper surface of the fixed mounting plate (21), and the buckle feeding guide frame (612) is arranged on the upper end of the buckle feeding straight vibration device (613); the fixed mounting frame is provided with a buckle bearing mounting frame (614) at the side of the buckle loading straight vibration device (613), the upper end part of the buckle bearing mounting frame (614) can be provided with a buckle bearing block (615) in a relatively horizontal movable manner, the buckle bearing block (615) is provided with a buckle bearing groove (6151), the buckle bearing mounting frame (614) is provided with a horizontally-acting buckle bearing driving cylinder (616) corresponding to the buckle bearing block (615), and the extending end part of a piston rod of the buckle bearing driving cylinder (616) is connected with the buckle bearing block (615); when the buckle bearing block (615) is at an initial position, a buckle bearing groove (6151) of the buckle bearing block (615) is aligned with a buckle loading guide groove (6121) of the buckle loading guide frame (612);

installation mechanism (62) are snatched to the buckle including the spiral shell in the buckle of fixed mounting panel (21) upper surface snatchs mounting bracket (621), the buckle snatchs the upper end of mounting bracket (621) and installs horizontal drive linear module (622) of horizontal action around installing, horizontal activity frame (623) are installed to the drive end of horizontal drive linear module (622), horizontal activity frame (623) are installed the linear module of lift drive (624) of action from top to bottom, lift adjustable shelf (625) have been installed to the drive end of the linear module of lift drive (624), lift adjustable shelf (625) have been installed the buckle and have been snatched gas claw (626).

8. The preparation and assembly method of the polyvinyl chloride plastic automobile skylight drain pipe according to claim 4, characterized by comprising the following steps: in the step 11, the following materials are accurately weighed according to the weight percentage: 53-56% of three-type PVC powder, 34-38% of DINP plasticizer, 1.5-1.7% of epoxy soybean oil plasticizer, 2.6-3% of calcium-zinc stabilizer, 2.4-2.9% of odor adsorbent, 2-6% of calcium carbonate, 0.05% of antioxidant and 0.05% of weather-resistant agent.

9. The preparation and assembly method of the polyvinyl chloride plastic automobile skylight drain pipe according to claim 8, characterized by comprising the following steps: in the step 11, the following materials are accurately weighed according to the weight percentage: 54 percent of three-type PVC powder, 34.5 percent of DINP type plasticizer, 1.5 percent of epoxy soybean oil type plasticizer, 3 percent of calcium-zinc stabilizer, 2.9 percent of odor adsorbent, 4 percent of calcium carbonate, 0.05 percent of antioxidant and 0.05 percent of weather-resistant agent.