CN110744828B

CN110744828B - Production process of car repairing lying plate

Info

Publication number: CN110744828B
Application number: CN201910976606.1A
Authority: CN
Inventors: 陈佳俊; 裴德坤
Original assignee: Zhejiang Meisen Technology Co ltd
Current assignee: Zhejiang Meisen Technology Co ltd
Priority date: 2019-10-15
Filing date: 2019-10-15
Publication date: 2022-02-08
Anticipated expiration: 2039-10-15
Also published as: CN110744828A

Abstract

The invention discloses a production process of a car repairing lying plate, which relates to the technical field of preparation of car repairing lying plates and comprises the following steps: s1: preparing raw materials, and uniformly stirring all the components of the raw materials for later use, wherein the raw materials comprise the following components in percentage by weight: s2: heating the raw materials, and conveying the stirred raw materials into an extruder of a hollow plastic molding machine for heating and melting; s3: molding; s4: trimming, namely trimming the formed semi-finished product of the car-repairing lying plate to remove burrs; s5: assembling, namely assembling the trimmed semi-finished car repairing lying plate with other parts; s6: inspecting and packaging, namely inspecting the assembled car repairing creeper, and packaging qualified products; and (5) obtaining a finished vehicle repairing lying plate through the 6 steps. The preparation method has the advantage of improving the production efficiency.

Description

Production process of car repairing lying plate

Technical Field

The invention relates to the technical field of vehicle repairing creeper boards, in particular to a production process of a vehicle repairing creeper board.

Background

The creeper is a tool for facilitating the vehicle repair personnel to repair the vehicle, and the vehicle repair personnel can lie on the creeper to repair the structure of the bottom of the vehicle when repairing the vehicle. The vehicle service creeper is typically formed by blow molding plastic.

The production process of the existing car repairing lying plate mainly comprises the steps of putting a semi-molten pipe blank or a parison obtained by extrusion or injection molding into molds of various shapes, introducing compressed air into the pipe blank to blow the pipe blank so as to enable the pipe blank to be tightly attached to the wall of the mold cavity, and then cooling and demolding to obtain a hollow product.

The above prior art solutions have the following drawbacks: in the production process, because the common thermoplastic plastics can not be cooled quickly, and the plastic is cracked in the cooling process due to the excessively high cooling speed, the formed plastic car repairing lying plate is cooled and demoulded after a mould is opened, so that the production efficiency is low.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a production process of a car repairing lying plate, which improves the formula of plastic raw materials by adding phthalate in the production process of the plastic lying plate, so that the forming and cooling of the plastic lying plate can be synchronously carried out, and the working efficiency is improved.

The above object of the present invention is achieved by the following technical solutions:

a production process of a car repairing lying plate comprises the following steps:

s1: preparing raw materials, and uniformly stirring all the components of the raw materials for later use, wherein the raw materials comprise the following components in percentage by weight:

60-80% of plastic master batch;

10-30% of color master batch;

3-5% of calcium carbonate;

3-5% of antibacterial particles;

2-3% of phthalate.

S2: heating the raw materials, and conveying the stirred raw materials into an extruder of a hollow plastic molding machine for heating and melting;

s3: forming, namely extruding the heated and melted raw materials by an extruder to form a semi-molten pipe blank, and conveying the semi-molten pipe blank into a template of a hollow plastic forming machine for blow forming, wherein the blow forming is carried out while a cooling structure of the hollow plastic forming machine is rapidly cooled;

s4: trimming, namely trimming the formed semi-finished product of the car-repairing lying plate to remove burrs;

s5: assembling, namely assembling the trimmed semi-finished car repairing lying plate with other parts;

s6: inspecting and packaging, namely inspecting the assembled car repairing creeper, and packaging qualified products;

and (5) obtaining a finished vehicle repairing lying plate through the 6 steps.

Through adopting above-mentioned technical scheme, the raw materials to repairing the car service creeper in step S1 are compounded, add phthalate in the raw materials of repairing the car service creeper, make each group' S proportion change in the raw materials of preparation repairing the car service creeper, and make the pliability of repairing the car service creeper in the forming process improve through the interpolation of phthalate, the vitrification temperature of repairing the car service creeper descends, when the temperature descends, the difficult local vitrification that takes place of repairing the car service creeper, and local crystallinity increases, reduce the inside production crack of repairing the car service creeper in the cooling shaping and lead to the unqualified condition to produce. Secondly add antibiotic granule in the raw materials, with the antagonism of improvement car repair service creeper to the bacterium, the inhibition capacity, car repair service creeper adsorbs the sweat stain on the person's body of the car repair personnel who uses the service creeper to repair the car more easily in the use, and remain more sweat stain residue in the service creeper, breed microorganism such as more bacterium more easily, there is certain bacterial infection hidden danger to the naked skin of car repair personnel, cause skin disease easily, and the interpolation of antibiotic granule makes microorganism such as bacterium on the plastics service creeper be difficult for breeding, the effect of protection is played to the car repair workman.

The invention is further configured to: the phthalate is selected from one or more of butyl benzyl phthalate, dibutyl phthalate, dioctyl phthalate, diisononyl phthalate and diisodecyl phthalate.

The invention is further configured to: the antibacterial particles comprise the following components in percentage by weight:

3-5% of chitin;

10-40% of natural mordenite;

30-70% of alpha-sepiolite;

5-10% of an auxiliary agent;

10-20% of nano titanium dioxide.

By adopting the technical scheme, the chitin has good biocompatibility and biodegradability, and the product added with the chitin has good effects of antibiosis, bacteriostasis, allergy prevention, deodorization and the like. However, chitin has good hydrophilicity, and chitin cannot be well mixed with high molecular polymer plastic particles when being added into plastic raw materials. The mixing effect between the chitin and the high molecular polymer plastic particles in a molten state is improved by adding the natural mordenite, the alpha-sepiolite and the auxiliary agent, and the natural mordenite has a unique porous and frame-shaped structure and has a strong adsorption effect; the alpha-sepiolite is a fibrous crystal and has good adsorption performance; both can absorb and disperse chitin, and the assistant can improve the dispersing performance of the mordenite and the alpha-sepiolite in the high molecular polymer, so that the chitin can be better dispersed in the plastic in a molten state.

The invention is further configured to: the auxiliary agent comprises the following components in percentage by weight:

0.5-3% of alkyl phosphate;

10-20% of hexadecyl dimethyl (2-sulfurous acid) ethyl ammonium;

5-15% of diethyl phthalate;

10-30% of oleamide;

40-60% of an organic silicon coupling agent.

By adopting the technical scheme, the components of alkyl phosphate, hexadecyl dimethyl (2-sulfurous acid) ethyl ammonium, diethyl phthalate, oleamide and an organosilicon coupling agent added in the auxiliary agent can be continuously coated outside the natural mordenite and the alpha-sepiolite, so that the surfaces of the natural mordenite and the alpha-sepiolite are modified, the dispersity of the natural mordenite and the alpha-sepiolite in a molten state is improved, and the chitin is more uniformly distributed in the molded plastic car repairing lying plate. Besides surface modification of natural mordenite and alpha-sepiolite, the components in the adjuvant can be partially blended into plastics at high temperature, so that the functionality of the plastics is improved, alkyl phosphate can be used as an antistatic agent to improve the antistatic capability of the plastics, and diethyl phthalate can improve the plasticizing performance of the plastics.

The invention is further configured to: the preparation process of the antibacterial particles is as follows:

step a: firstly, immersing natural mordenite and alpha-sepiolite into deionized water added with chitin according to a certain proportion, stirring and standing, and controlling the particle size of the added natural mordenite and alpha-sepiolite to be 150-250 meshes;

step b: filtering out the natural mordenite and the alpha-sepiolite in the step a, and then adding the natural mordenite and the alpha-sepiolite and the nano titanium dioxide into an auxiliary agent to be stirred for 2-3 min;

step c: and c, filtering the natural mordenite, the alpha-sepiolite and the nano titanium dioxide in the step b, and drying to obtain the antibacterial particles.

By adopting the technical scheme, the natural mordenite and the alpha-sepiolite firstly adsorb the chitin in the solution in the chitin solution, and then the antibacterial particles with better compatibility with the high molecular polymer are obtained by coating the auxiliary agent, so that the dispersion effect of the antibacterial particles in the melting process of the plastic particles is improved. The nano titanium dioxide is adsorbed by the auxiliary agent, so that the dispersibility of the nano titanium dioxide in molten plastic particles is improved, and the nano titanium dioxide can catalyze microorganisms such as bacteria to decompose under the action of ultraviolet rays when the nano titanium dioxide is irradiated by the sun.

The invention is further configured to: the cooling structure of cavity plastic molding machine includes the frame, install first template and second template in the frame, the even interval of direction of height along first template and second template has seted up more than one mounting hole on the lateral wall of first template and second template, slidable mounting has the standpipe in the mounting hole, still be provided with the locking subassembly of locking standpipe on the lateral wall of first template and second template, the locking subassembly includes locking frame, locking piece and driving piece, install the locking frame on the lateral wall of first template and second template, be provided with the driving piece on the locking frame, be connected with the locking piece on the driving piece, locking piece and locking frame sliding connection, the locking groove has been seted up on the lateral wall of standpipe, locking piece and locking groove joint.

Through adopting above-mentioned technical scheme, the storage has the cooling water in the storage water pipe, and the storage water pipe can install into the mounting hole, then drives locking piece and locking groove joint through the driving piece for the storage water pipe obtains the locking. When the car repairing creeper with different cooling effects is required to be produced, different quantities of water storage pipes can be installed on the first template and the second template, so that the car repairing creeper capable of being cooled quickly can be produced, the cooling step can be synchronously performed during forming, the cooling step is reduced, and the production efficiency is improved. When the car repairing lying plate which cannot be cooled quickly is produced, the water storage pipes for cooling can be completely removed, so that the production range of the hollow plastic forming machine is expanded conveniently and quickly.

The invention is further configured to: the driving piece comprises a spring and a pulling piece, a telescopic groove is formed in the side wall of one side, close to the mounting hole, of the locking frame, the spring is arranged in the telescopic groove, one end of the spring is fixedly connected with the groove bottom of the telescopic groove, the other end of the spring is fixedly connected with the locking block, the locking block is in sliding connection with the telescopic groove, an accommodating cavity is formed in one side, far away from the mounting hole, of the locking frame, a through hole communicated with the accommodating cavity is formed in the groove bottom of the telescopic groove, the pulling piece is arranged in the accommodating cavity, and the pulling piece penetrates through the through hole and is connected with the locking block;

the pulling piece comprises a first lug, a fourth lug, a second lug, a third lug, a rotating block and a rotating handle, a fourth lug is fixedly connected on the side wall of one side of the locking block close to the spring, the fourth lug penetrates through the spring and the through hole and extends into the accommodating cavity, the side walls at two sides of the accommodating cavity are connected with second convex blocks, the side walls of the two second convex blocks which are close to each other are provided with sliding grooves, the sliding groove is connected with a first lug in a sliding way, the fourth lug is connected with the first lug, the side walls of the two sides of the first lug, which are close to the second lug, are fixedly connected with third lugs, the locking frame is provided with a rotating handle which extends into the accommodating cavity through the side wall of the locking frame, and the side wall of one end of the rotating handle extending into the accommodating cavity is connected with a rotating block, and the rotating block is abutted to the third bump.

Through adopting above-mentioned technical scheme, when relieving the locking, in the flexible inslot of pulling piece pulling locking piece entering, when the locking piece gets into flexible inslot, the spring was compressed, locking piece and locking groove separation for the locking subassembly unblock. After the standpipe installation got into in the mounting hole, then pulled the piece through stopping the drive for the locking piece restores the effect of deformation at the spring and with locking piece bullet locking inslot, makes the standpipe locked. The locking mode is simple and quick; when the locking is released, the rotating handle is rotated to drive the rotating block to rotate, the rotating block rotates to pull the third lug, the third lug drives the first lug to slide along the sliding groove, and the first lug pulls the locking block to enter the telescopic groove when moving, so that the locking is released. When the water storage pipe needs to be locked, the rotating handle is loosened, when the spring pushes the locking block, the locking block pulls the first protruding block to slide along the sliding groove, the first protruding block slides to drive the rotating block to rotate through the third protruding block, and therefore the rotating handle is enabled to recover the natural state, and the water storage pipe is locked.

The invention is further configured to: the side wall of the water storage pipe is fixedly connected with a guide block, the side walls of the first template and the second template are provided with first guide grooves communicated with the mounting hole, the side wall of the mounting hole is provided with second guide grooves communicated with the first guide grooves, and the guide block is clamped with the second guide grooves;

one side of the first template and one side of the second template are provided with connecting pipes, two ends of each connecting pipe are respectively connected with different water storage pipes, one ends of the water storage pipes are provided with water inlets, the other ends of the water storage pipes are provided with water outlets, the water inlets are provided with closing parts, the water inlets are connected with the connecting pipes, and the water outlets are connected with the connecting pipes;

the closed piece comprises a closed pipe and a closed ball valve, the closed pipe is connected to the water outlet and the water inlet of the water storage pipe, the closed ball valve is installed in the closed pipe, and one end, connected with the water storage pipe, of the closed pipe is far away from the closed pipe and is connected with the connecting pipe.

Through adopting above-mentioned technical scheme, when the standpipe was installed into the mounting hole, earlier with the corresponding cooperation of guide block and first guiding groove, then insert the standpipe along the mounting hole, after standpipe and mounting hole cooperation, the guide block slided to the tank bottom of first guiding groove, then rotates the standpipe, the guide block rotate slide in the second guiding groove with second guiding groove joint to make the standpipe obtain the guide and spacing, make the installation of standpipe more stable. The connecting pipe is communicated with different water storage pipes, and then the water storage pipes at two ends are connected with the circulating water bucket, so that cooling water in the water storage pipes can be circulated, and the cooling effect of the water storage pipes is improved. The closing piece can close the water storage pipe, so that when the water storage pipe and the connecting pipe are disassembled, water in the water storage pipe does not need to be completely discharged, and the water storage pipe can be disassembled at any time. When the connecting pipe is disassembled, the sealing ball valve is rotated to close the sealing pipe, and then the connecting pipe is disassembled.

The invention is further configured to: the connecting pipe is connected with the closed pipe through a connecting piece, the connecting piece comprises a connecting ring and a clamping block, the clamping block is fixedly connected to the side wall of one end, connected with the closed pipe, of the connecting pipe along the circumferential direction of the connecting pipe, the connecting ring is slidably mounted on the connecting pipe, one end of the connecting ring is in threaded connection with the closed pipe, a clamping groove is formed in the inner side wall of the other end of the connecting ring, and the side wall of the clamping groove is abutted against the clamping block; and a pulling handle is fixedly connected to the end surface of the water storage pipe.

By adopting the technical scheme, when the connecting pipe is disassembled, the connecting ring is rotated to be separated from the closed pipe, and when the connecting pipe is assembled, the connecting ring is rotated to be in threaded connection with the closed pipe. When the connecting ring is used for connecting the connecting pipe and the closed pipe, the side wall of the clamping groove is tightly abutted to the clamping block, and the connecting pipe is tightly abutted to the closed pipe, so that the sealing performance is enhanced. The pulling handle is convenient for the workers to dismantle the water storage pipe, and the working efficiency is improved.

Compared with the prior art, the invention has the beneficial effects that:

1. the phthalate is added into the raw materials for manufacturing the car repairing creeper, so that the temperature change resistance of the car repairing creeper during molding is improved, the molding and cooling can be carried out simultaneously, and the production efficiency is improved;

2. the antibacterial granules are added into the raw materials, so that the antibacterial and bacteriostatic effects of the finished car repair creeper are enhanced, and a certain protection effect is achieved for car repair personnel;

3. by arranging the detachable water storage pipes, the number of the water storage pipes is adjusted according to the material of the produced vehicle repairing creeper, so that the vehicle repairing creeper which can be rapidly cooled can be cooled during shaping, and the production efficiency is improved;

4. the connecting pipe is arranged to be connected with the water storage pipes, so that cooling water between the water storage pipes can circulate, and the cooling efficiency of the cooling water is improved.

Drawings

FIG. 1 is a perspective view of a hollow plastic molding machine;

FIG. 2 is a perspective view of a first die plate, a second die plate, and a hydraulic cylinder;

FIG. 3 is a cross-sectional view of the first template and the reservoir showing the reservoir in connection with the first template;

FIG. 4 is a sectional view of the first template, the connection pipe and the reservoir pipe for showing a connection relationship of the reservoir pipe and the connection pipe;

FIG. 5 is a cross-sectional view of the locking assembly and the cartridge showing the connection of the locking assembly to the cartridge.

Reference numerals: 1. a frame; 11. a first template; 12. a second template; 13. a hydraulic cylinder; 2. mounting holes; 21. a water storage pipe; 211. a first guide groove; 212. a second guide groove; 213. a guide block; 22. pulling the handle; 23. a locking assembly; 231. a locking frame; 232. a locking block; 233. a locking groove; 24. a drive member; 241. a spring; 25. a pulling member; 251. a first bump; 252. a fourth bump; 253. a second bump; 254. a third bump; 255. rotating the block; 256. rotating the handle; 26. a telescopic groove; 27. an accommodating chamber; 28. a through hole; 3. a closure; 31. closing the tube; 32. closing the ball valve; 4. a connecting pipe; 41. a connecting member; 411. a connecting ring; 412. a clamping block; 413. a clamping groove; 414. a sliding groove; 5. a water storage bucket.

Detailed Description

The present invention will be described in detail with reference to examples.

The invention discloses a production process of a car repairing lying plate, which comprises the following steps:

s1: preparing raw materials, wherein the raw materials comprise 60% of plastic master batch, 30% of master batch, 5% of calcium carbonate, 3% of antibacterial particles and 2% of phthalate by weight percent, and uniformly stirring the components of the raw materials for later use. Wherein the phthalate ester is butyl benzyl phthalate.

S2: heating the raw materials, and conveying the uniformly stirred raw materials into an extruder of a hollow plastic molding machine for heating and melting.

S3: and (3) forming, namely extruding the heated and melted raw materials by an extruder to form a semi-molten pipe blank, conveying the semi-molten pipe blank into a template of a hollow plastic forming machine for blow forming, and rapidly cooling by adopting a cooling structure of the hollow plastic forming machine during blow forming.

S4: and (4) trimming, namely trimming and deburring the formed semi-finished product of the car repairing lying plate.

and (5) obtaining a finished vehicle repairing lying plate through the 6 steps.

The antibacterial particles are prepared by the following steps:

preparing 5 percent of chitin, 40 percent of natural mordenite, 30 percent of alpha-sepiolite, 10 percent of auxiliary agent and 15 percent of nano titanium dioxide by weight percentage. Wherein the chitin and deionized water are prepared into a solution with the chitin concentration of 30%.

The adjuvant comprises 0.5 wt% of alkyl phosphate, 10 wt% of hexadecyldimethyl (2-sulfurous acid) ethyl ammonium, 15 wt% of diethyl phthalate, 30 wt% of oleamide and 44.5 wt% of organosilicon coupling agent.

step c: and c, filtering the natural mordenite, the alpha-sepiolite and the nano titanium dioxide in the step b, and drying to obtain the plastic particles.

Referring to fig. 1, the cooling structure of a hollow plastic molding machine disclosed by the invention comprises a frame 1, wherein a first template 11 is fixedly installed on one side of the frame 1, and a second template 12 is installed on the other side of the frame 1 in a sliding manner. The frame 1 is also provided with a hydraulic cylinder 13, and a piston rod of the hydraulic cylinder 13 is connected with the second template 12.

Referring to fig. 2 and 3, 5 mounting holes 2 are formed in the side walls of the first form 11 and the second form 12 in the height direction of the first form 11 and the second form 12. The axis of the mounting hole 2 is parallel to the longitudinal axes of the first and

second templates

11 and 12. A water storage pipe 21 is slidably mounted in the mounting hole 2, and a pulling handle 22 (see fig. 4) is fixedly connected to the end surface of the water storage pipe 21.

Referring to fig. 2 and 3, the side walls of the first template 11 and the second template 12 on the side where the mounting hole 2 is formed are provided with first guide grooves 211 symmetrical to the axis of the mounting hole 2, and the first guide grooves 211 are communicated with the mounting hole 2. The second guide slot 212 is opened on the lateral wall of the mounting hole 2 and symmetrical to the axial line of the mounting hole 2, the second guide slot 212 is communicated with the first guide slot 211, the lateral wall of the water storage pipe 21 is fixedly connected with a guide block 213, and the guide block 213 is clamped with the second guide slot 212.

When the water storage pipe 21 is installed in the installation hole 2, the guide block 213 is correspondingly matched with the first guide groove 211, then the water storage pipe 21 is inserted into the installation hole 2, after the water storage pipe 21 is matched with the installation hole 2, the guide block 213 slides to the groove bottom of the first guide groove 211, then the water storage pipe 21 is rotated, and the guide block 213 is rotationally clamped with the second guide groove 212 in the second guide groove 212.

Referring to fig. 4 and 5, the side walls of the first and

second templates

11 and 12 on which the mounting holes 2 are opened are provided with locking assemblies 23. The locking assembly 23 comprises a locking frame 231, a locking block 232 and a driving member 24, the driving member 24 comprises a spring 241 and a pulling member 25, and the pulling member 25 comprises a first projection 251, a fourth projection 252, a second projection 253, a third projection 254, a rotating block 255 and a rotating handle 256. Fixed connection locking frame 231 on the lateral wall of first template 11 and second template 12, has seted up flexible groove 26 on locking frame 231 is close to the lateral wall of mounting hole 2, is provided with spring 241 in the flexible groove 26, and spring 241 one end links to each other with the tank bottom of flexible groove 26 is fixed, and spring 241's other end fixedly connected with locking piece 232 has seted up locking groove 233 on the lateral wall of standpipe 21, locking piece 232 and locking groove 233 joint.

Referring to fig. 4 and 5, an accommodating cavity 27 is formed in one end of the locking frame 231, which is far away from the mounting hole 2. The bottom of the telescopic groove 26 is provided with a through hole 28 communicated with the accommodating cavity 27. The side walls of the accommodating chamber 27 at both sides in the height direction are fixedly connected with second protrusions 253. The side walls of the two second protrusions 253 which are close to each other are provided with a sliding groove 414, a first protrusion 251 is arranged between the two second protrusions 253, one end of the first protrusion 251 is fixedly connected with a fourth protrusion 252, the fourth protrusion 252 passes through the through hole 28 and the spring 241 and is fixedly connected with the locking block 232, and the other end of the first protrusion 251 is slidably connected with the sliding groove 414.

Referring to fig. 4 and 5, a third protrusion 254 is fixedly connected to the sidewall of the first protrusion 251 and is symmetrical to the axis of the first protrusion 251, a rotation handle 256 is rotatably connected to the surface of the locking frame 231, the rotation handle 256 extends into the accommodating cavity 27 through the sidewall of the locking frame 231, a rotation block 255 is fixedly connected to the sidewall of the rotation handle 256 and is symmetrical to the axis of the rotation handle 256, and the rotation block 255 abuts against the third protrusion 254.

Referring to fig. 4, a closing member 3 is provided on an end surface of the water storage tube 21, and the closing member 3 includes a closing tube 31 and a closing ball valve 32. A water inlet is arranged on the end face of one end of the water storage pipe 21, a water outlet is arranged on the end face of the other end of the water storage pipe 21, a closed pipe 31 fixedly connected with the end face of the water storage pipe 21 is arranged on the water outlet and the water inlet, and a closed ball valve 32 capable of closing the closed pipe 31 is arranged on the closed pipe 31.

Referring to fig. 4, a connection pipe 4 is disposed between adjacent water storage pipes 21, and connectors 41 are disposed at both ends of the connection pipe 4, and each connector 41 includes a connection ring 411 and a clamping block 412. The lateral wall of the connecting pipe 4 is fixedly connected with a clamping block 412 along the circumferential direction of the connecting pipe 4, the connecting pipe 4 is connected with a connecting ring 411 in a sliding manner, a clamping groove 413 is formed in the inner lateral wall of the connecting ring 411, the clamping block 412 is clamped with the clamping groove 413, and one end, far away from the clamping groove 413, of the connecting ring 411 is in threaded connection with the closed pipe 31.

Referring to fig. 2, a water storage barrel 5 is installed at one side of the first template 11, a circulating water pump is installed in the water storage barrel 5, a connection pipe 4 is connected to the water storage barrel 5, and one end of the connection pipe 4, which is far away from the water storage barrel 5, is connected to the uppermost and lowermost water storage pipes 21 in the height direction of the first template 11 and the second template 12, respectively.

The implementation principle of the embodiment is as follows: when plastics are being fashioned, in cooling water flowed into the standpipe 21 along connecting pipe 4 by circulating water pump from the water storage bucket 5, the cooling water in the standpipe 21 absorbed the heat on first template 11 and second template 12 for fashioned plastics service creeper cools off the design fast in first template 11 and the second template 12, then separates first template 11 and second template 12, thereby takes out the plastics service creeper in first template 11 and the second template 12, carries out follow-up finishing and assembles the operation.

For plastic lying plates with different cooling effect requirements, the water storage pipes 21 on the first template 11 and the second template 12 can be removed, and the water storage pipes 21 are reduced. When the water storage pipe is removed, the closing ball valve 32 on the closing pipe 31 is closed, then the connecting ring 411 on the water storage pipe 21 to be removed is rotated, so that the connecting ring 411 is separated from the closing pipe 31, and then the connecting pipe 4 is removed from the closing pipe 31. Then the rotating handle 256 on the locking frame 231 is rotated, the rotating handle 256 rotates to drive the rotating block 255 to pull the third protruding block 254, the third protruding block 254 pulls the first protruding block 251 to slide along the sliding groove 414 towards the direction far away from the installation hole 2, the first protruding block 251 pulls the locking block 232 to separate from the locking groove 233, then the pulling handle 22 on the end surface of the water storage pipe 21 is pulled, the water storage pipe 21 is firstly rotated, the guide block 213 slides into the first guide groove 211, then the water storage pipe 21 is pulled to separate from the installation hole 2, and therefore the water storage pipe 21 is detached.

And then the water storage pipes 21 installed on the first and

second mold plates

11 and 12 are connected by the connection pipes 4. Thereby allowing the number of the storage pipes 21 for cooling on the first and

second mold plates

11 and 12 to be reduced.

When the rapid cooling is not needed, the water storage pipe 21 is completely removed.

Examples 2 to 9 differ from example 1 in that: the components of the raw materials of the car repairing lying plate in percentage by weight are as follows.

Examples 10 to 16 differ from example 1 in that: the components of the antibacterial particles in percentage by weight are shown in the following table.

Examples 17 to 24 differ from example 1 in that: the components of the adjuvant are in the following table in percentage by weight.

Examples 25 to 34 are different from example 1 in that: the phthalate is selected from the following component ratios in percentage by weight.

Comparative example

Comparative example 1 differs from example 1 in that: phthalate is not added in the raw materials;

comparative example 2 differs from example 1 in that: antibacterial particles are not added in the raw materials;

comparative example 3 differs from example 1 in that: no adjuvant is added to the antimicrobial granules.

Detection method

1. And (3) brittleness detection of the car repairing creeper: the measurement was carried out using a rolling mechanism. The rolling test box is made of oak, has the size of 190mm multiplied by 197mm, is connected with a motor by a transmission mechanism and moves at a constant speed of 60 +/-r/min; and twenty-four oak standard blocks are arranged in the test box, and the test period is 10min when the test sample is under the action of alternating load cutoff. And calculating the mass loss rate of the sample according to the mass change of the sample before and after the test. The results are averaged over 3 runs as follows:

examples	Rate of mass loss
		Example 1	0.8％
Comparative example 1	5％

And (4) conclusion: from the data in the table, it can be seen that the mass loss rate of the car repairing creeper in example 1 is significantly greater than that of comparative example 1, which indicates that the brittleness of the car repairing creeper in example 1 is better than that of comparative example 1, thereby proving that the toughness of the car repairing creeper without phthalate is significantly reduced when the forming and cooling are performed simultaneously, indicating that cracks occur in the interior of the car repairing creeper during the cooling forming process, i.e., the toughness of the car repairing creeper raw material with phthalate is improved after the phthalate is added, and the cracks are reduced during the rapid cooling.

2. Test for antibacterial ability

Scraping and repairing a car lying plate, and slicing to prepare a sample with the thickness of 1mm and the thickness of 1cm multiplied by 1 cm.

AATCC-90 test method: inoculating test bacteria (Candida albicans as test bacteria) on agar culture medium, tightly attaching to the sample, culturing at 37 deg.C for 24 hr, and observing the bacteria reproduction and halo size in aseptic zone around the sample with magnifier. The width of the stop band is increased from 1 level to 10 levels in sequence. The width of the stop band represents the magnitude of the antimicrobial efficacy.

Group of	Width of stop belt
		Example 1	Grade 6
Comparative example 1	Grade 5
		Comparative example 2	Stage 2
Comparative example 3	Grade 3

And (4) conclusion: from the above table, it can be seen that the width of the inhibiting belt in the example 1 is larger than that in the comparative examples 1 to 3, which proves that the vehicle repairing lying plate of the present invention has a strong inhibiting ability against microorganisms such as bacteria, and the auxiliary agent has a good effect on the dispersion of the antibacterial particles.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims

1. The production process of the car repairing lying plate is characterized by comprising the following steps of:

60-80% of plastic master batch;

10-30% of color master batch;

3-5% of calcium carbonate;

3-5% of antibacterial particles;

2-3% of phthalate;

obtaining a finished vehicle repairing lying plate through the 6 steps;

the cooling structure of the hollow plastic molding machine comprises a frame (1), wherein a first template (11) and a second template (12) are installed on the frame (1), more than one mounting hole (2) is formed in the side walls of the first template (11) and the second template (12) at even intervals along the height direction of the first template (11) and the second template (12), a water storage pipe (21) is installed in the mounting hole (2) in a sliding mode, a locking assembly (23) for locking the water storage pipe (21) is further arranged on the side walls of the first template (11) and the second template (12), the locking assembly (23) comprises a locking frame (231), a locking block (232) and a driving piece (24), the locking frame (231) is installed on the side walls of the first template (11) and the second template (12), the driving piece (24) is arranged on the locking frame (231), and the locking block (232) is connected to the driving piece (24), the locking block (232) is connected with the locking frame (231) in a sliding mode, a locking groove (233) is formed in the side wall of the water storage pipe (21), and the locking block (232) is clamped with the locking groove (233);

the driving piece (24) comprises a spring (241) and a pulling piece (25), a telescopic groove (26) is formed in the side wall of one side, close to the mounting hole (2), of the locking frame (231), the spring (241) is arranged in the telescopic groove (26), one end of the spring (241) is fixedly connected with the groove bottom of the telescopic groove (26), the other end of the spring (241) is fixedly connected with the locking block (232), the locking block (232) is in sliding connection with the telescopic groove (26), an accommodating cavity (27) is formed in one side, far away from the mounting hole (2), of the locking frame (231), a through hole (28) communicated with the accommodating cavity (27) is formed in the groove bottom of the telescopic groove (26), the pulling piece (25) is arranged in the accommodating cavity (27), and the pulling piece (25) penetrates through the through hole (28) to be connected with the locking block (232);

the pulling piece (25) comprises a first convex block (251), a fourth convex block (252), a second convex block (253), a third convex block (254), a rotating block (255) and a rotating handle (256), the side wall of one side, close to the spring (241), of the locking block (232) is fixedly connected with the fourth convex block (252), the fourth convex block (252) penetrates through the spring (241) and the through hole (28) and extends into the accommodating cavity (27), the side walls on the two sides of the accommodating cavity (27) are connected with the second convex block (253), the side walls, close to the second convex blocks (253), of the two second convex blocks (253) are provided with sliding grooves (414), the sliding grooves (414) are internally and slidably connected with the first convex block (251), the fourth convex block (252) is connected with the first convex block (251), and the side walls, close to the second convex block (253), of the first convex block (251) are fixedly connected with the third convex blocks (254), a rotating handle (256) is arranged on the locking frame (231), the rotating handle (256) extends into the accommodating cavity (27) through the side wall of the locking frame (231), a rotating block (255) is connected to the side wall of one end, extending into the accommodating cavity (27), of the rotating handle (256), and the rotating block (255) is abutted to the third bump (254);

the side wall of the water storage pipe (21) is fixedly connected with a guide block (213), the side walls of the first template (11) and the second template (12) are provided with first guide grooves (211) communicated with the mounting hole (2), the side wall of the mounting hole (2) is provided with second guide grooves (212) communicated with the first guide grooves (211), and the guide block (213) is clamped with the second guide grooves (212);

one side of each of the first template (11) and the second template (12) is provided with a connecting pipe (4), two ends of each connecting pipe (4) are respectively connected with different water storage pipes (21), one end of each water storage pipe (21) is provided with a water inlet, the other end of each water storage pipe (21) is provided with a water outlet, the water inlet is provided with a sealing part (3), the water inlet is connected with the connecting pipe (4), and the water outlet is connected with the connecting pipe (4);

the sealing piece (3) comprises a sealing pipe (31) and a sealing ball valve (32), the sealing pipe (31) is connected to the water outlet and the water inlet of the water storage pipe (21), the sealing ball valve (32) is installed in the sealing pipe (31), and one end, far away from the end connected with the water storage pipe (21), of the sealing pipe (31) is connected with the connecting pipe (4);

the connecting pipe (4) is connected with the closed pipe (31) through a connecting piece (41), the connecting piece (41) comprises a connecting ring (411) and a clamping block (412), the clamping block (412) is fixedly connected to the side wall of one end, connected with the closed pipe (31), of the connecting pipe (4) along the circumferential direction of the connecting pipe (4), the connecting ring (411) is slidably mounted on the connecting pipe (4), one end of the connecting ring (411) is in threaded connection with the closed pipe (31), a clamping groove (413) is formed in the inner side wall of the other end of the connecting ring (411), and the side wall of the clamping groove (413) is abutted against the clamping block (412); the end surface of the water storage pipe (21) is fixedly connected with a pulling handle (22).

2. The production process of the vehicle repairing lying plate according to claim 1, wherein the production process comprises the following steps: the phthalate is selected from one or more of butyl benzyl phthalate, dibutyl phthalate, dioctyl phthalate, diisononyl phthalate and diisodecyl phthalate.

3. The production process of the vehicle repairing lying plate according to claim 1, wherein the production process comprises the following steps: the antibacterial particles comprise the following components in percentage by weight: