CN111231275A

CN111231275A - Plastic products is with correction overlap blowing equipment

Info

Publication number: CN111231275A
Application number: CN202010186209.7A
Authority: CN
Inventors: 陆聆聆
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-17
Filing date: 2020-03-17
Publication date: 2020-06-05

Abstract

The invention relates to the technical field of plastic product blow molding, and discloses a trimming and blow molding device for plastic products, which comprises a shell, wherein two side walls in the shell are movably connected with screw rods, the bottom of each screw rod is movably connected with a cam, the surface of each cam is movably connected with a clamping plate, the bottom of the shell is provided with a slide rail, the surface of each slide rail is slidably connected with a connecting block, the top of each screw rod is movably connected with a winding shaft, the surface of each winding shaft is wound with a pull rope, the other end of each pull rope is movably connected with a compression spring, the back of each compression spring is movably connected with a sliding groove, the surface of each compression spring is movably connected with a scraper, two sides of each scraper are movably connected with guide wheels. The left part and the right part of the shell are mutually separated, the compression spring loses the pulling force and releases the force compressed before, so the scraper is pushed out, and the effect of correcting the flash by utilizing the working track of the pressing equipment after the blow molding is finished is achieved.

Description

Plastic products is with correction overlap blowing equipment

Technical Field

The invention relates to the technical field of plastic product blow molding, in particular to a correction flash blow molding device for a plastic product.

Background

Also called blow molding, a rapidly developing plastic processing method, blow molding can be classified into extrusion blow molding and injection blow molding according to the parison making method, and newly developed are multilayer blow molding and stretch blow molding; the work flow of the blow molding is as follows: the tubular plastic parison is put into a split mold while the parison is hot, compressed air is immediately introduced into the parison after the mold is closed, so that the plastic parison is blown to cling to the inner wall of the mold, and various hollow products are obtained after cooling and demolding.

The existing blow molding equipment is a symmetrical closed pressing device which can ensure the pressure during blow molding and the shape after blow molding, but after the blow molding operation is finished, the end part of the plastic product is not completely solidified under the influence of hot air flow, so that the port part of the plastic product is shrunk.

Disclosure of Invention

In order to realize the purposes that after the blow molding is finished, the pressure equipment is utilized to correct the flash and the demolding can be finished without prying, the invention provides the following technical scheme: the utility model provides a plastic products are with revising overlap blowing equipment, which comprises a housin, the equal swing joint of inside both sides wall of casing has the screw rod, and the bottom swing joint of screw rod has the cam, and the surperficial swing joint of cam has the cardboard, and the slide rail has been seted up to the bottom of casing, and the surface sliding connection of slide rail has the connecting block, the top swing joint of screw rod has the spool, and the surface winding of spool has the stay cord, and the other end swing joint of stay cord has compression spring, and compression spring's back swing joint has the spout, and compression spring's surface swing joint has the scraper, and the equal swing joint in both sides of scraper has the leading wheel, and one side swing joint that the scraper kept away from the.

The invention has the beneficial effects that:

1. can stimulate compression spring through the stay cord rolling and contract, blow the inside messenger's that expands grow of raw materials after, make two parts keep away from each other about the casing, compression spring loses the pulling force and the power that compressed before the release, so the scraper is pushed out, so reached utilize the effect of the equipment working trajectory correction overlap of exerting pressure after the blowing is accomplished.

2. The cam is meshed with the clamping plate to enable the connecting block and the clamping column to be close to each other, so that the connecting block and the clamping column are clamped and bear raw materials after blow molding is completed, when the left part and the right part of the shell are far away from each other, the clamping column and the connecting block are far away from each other, the raw materials fall off, and therefore the effect that demolding can be completed without prying is achieved.

Preferably, the lower end of the torsion plate is movably connected with a pressure applying bag, the surface of the pressure applying bag is movably connected with a steering rod, the pressure applying bag and the top of the shell are in an intercommunicating design, when air enters the air inlet, a small amount of air flows into the pressure applying bag, and the pressure applying bag expands to clamp the blow-molded raw material.

Preferably, the top of the shell is provided with an air inlet, the surface of the air inlet is movably connected with a sealing cover, the length of the sealing cover is larger than the width of the air inlet, and the sealing cover can enable the inside of the shell to form a sealing space so as to ensure extrusion force during blow molding.

Preferably, the number of the clamping plates is two, the clamping columns are fixedly connected to the surfaces of the clamping plates on the right side, and the sizes of the clamping columns are matched with those of the connecting blocks.

Preferably, the scrapers and the compression springs are in one group, and the scrapers and the compression springs are in two groups in total, the sum of the extending lengths of the two groups of the scrapers is matched with the width of the shell, and when the scrapers extend, the end parts of the blown raw materials can be completely covered.

Preferably, the slide rail and the connecting block are not on the same plane, an elastic plate is movably connected inside the connecting block, and the length of the elastic plate is matched with that of the connecting block.

Preferably, the joint of the cam and the screw is provided with an engaging wheel, the diameter of the engaging wheel is one half of that of the cam, and the engaging wheel is used for changing the horizontal rotation motion of the screw into the longitudinal rotation motion of the cam.

Preferably, the length of the pull rope is less than the compression length of the compression spring, and the pull rope is made of nylon and has no elasticity,

preferably, the speed of the connection block leaving the clamping column is less than the speed of the scraper extending out.

Drawings

FIG. 1 is a front cross-sectional view of the housing construction of the present invention;

FIG. 2 is a schematic view of the cam structure of the present invention;

FIG. 3 is a schematic view of a slide rail structure according to the present invention;

FIG. 4 is an enlarged view of a portion A of FIG. 3;

FIG. 5 is a schematic view of a bobbin of the present invention;

FIG. 6 is a schematic view of the chute structure of the present invention;

FIG. 7 is an enlarged view of a portion of FIG. 6 at B;

fig. 8 is a schematic view of the compression spring structure of the present invention.

In the figure: the device comprises a shell 1, a screw rod 2, a cam 3, a clamping plate 4, a sliding rail 5, a connecting block 6, a winding shaft 7, a pulling rope 8, a compression spring 9, a sliding groove 10, a scraper 11, a guide wheel 12, a spring rod 13, a torsion plate 14, a pressure applying bag 15, a steering rod 16, an air inlet 17, a sealing cover 18, a clamping column 19 and an elastic plate 20.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-8, a trimming blow molding device for plastic products includes a housing 1, an air inlet 17 is disposed at the top of the housing 1, a sealing cover 18 is movably connected to the surface of the air inlet 17, the length of the sealing cover 18 is greater than the width of the air inlet 17, and the sealing cover 18 can form a sealed space inside the housing 1 to ensure the extrusion force during blow molding.

Two side walls in the shell 1 are movably connected with screw rods 2, the bottom of each screw rod 2 is movably connected with a cam 3, a meshing wheel is arranged at the joint of each cam 3 and each screw rod 2, the diameter of each meshing wheel is one half of that of each cam 3, and the meshing wheels are used for changing the horizontal rotation motion of the screw rods 2 into the longitudinal rotation motion of the cams 3; the surface of the cam 3 is movably connected with two clamping plates 4, the surface of the clamping plate 4 on the right side is fixedly connected with a clamping column 19, and the size of the clamping column 19 is matched with that of the connecting block 6; the speed of the separation of the connecting block 6 and the clamping column 19 is less than the speed of the extension of the scraper 11, so that when the connecting block 6 and the clamping column 19 are far away from each other, the scraper 11 finishes the trimming work.

Slide rail 5 has been seted up to casing 1's bottom, slide rail 5 plays the effect of the frictional force that produces when reducing cardboard 4 and being released, slide rail 5's surperficial sliding connection has connecting block 6, slide rail 5 and connecting block 6 are not on the coplanar, the inside swing joint elastic plate 20 of connecting block 6, elastic plate 20 plays and provides certain fault-tolerant distance for the contact of card post 19 with connecting block 6, reduce both probability of joint error, the length of elastic plate 20 and the length looks adaptation of connecting block 6.

The top of the screw rod 2 is movably connected with a winding shaft 7, the surface of the winding shaft 7 is wound with a pull rope 8, the other end of the pull rope 8 is movably connected with a compression spring 9, the length of the pull rope 8 is smaller than the compression length of the compression spring 9, and the pull rope 8 is made of nylon materials and has no elasticity; nylon is a term of polyamide fiber (nylon), can be made into long fiber or short fiber, and has the most outstanding advantages that the abrasion resistance is higher than that of all other fibers, 10 times higher than that of cotton and 20 times higher than that of wool; compression spring 9's back swing joint has spout 10, and spout 10 provides certain displacement space for scraper 11's removal, and compression spring 9's surface swing joint has scraper 11, and scraper 11 is a set of with compression spring 9, totally two sets of, and the sum of the length of stretching out of two sets of scrapers 11 and the width looks adaptation of casing 1, can cover the tip of blowing back raw materials completely when scraper 11 stretches out.

The two sides of the scraper 11 are movably connected with guide wheels 12, the guide wheels 12 are made of rubber materials, the surface smooth friction force is small, one side, far away from the scraper 11, of each guide wheel 12 is movably connected with a spring rod 13, the spring rods 13 play a role in relieving frictional vibration force generated by contact of the scraper 11 and a raw material, one end, far away from the compression spring 9, of the scraper 11 is movably connected with a torsion plate 14, the lower end of the torsion plate 14 is movably connected with a pressure applying bag 15, when the scraper 11 is pushed out, the torsion plate can be in contact with the torsion plate 14, and the rear torsion plate 14 rotates to push the pressure applying bag 15 to deflect to one side close to the raw material, so that the raw; the surface of the pressing bag 15 is movably connected with a steering rod 16, the pressing bag 15 and the top of the shell 1 are in a communicated design, when air enters the air inlet hole 17, a small amount of air can flow into the pressing bag 15, and the pressing bag 15 expands to clamp the blown raw materials.

When in use, the raw material to be blown is placed in the shell 1 below the air inlet 17, then the driving component is started to enable the left part and the right part of the shell 1 to be close to each other, the screw rod 2 is driven to rotate while the two parts are close to each other, the screw rod 2 rotates to drive the winding shaft 7 to rotate, the pulling rope 8 is wound on the surface of the winding shaft, the pulling rope 8 is wound to pull the compression spring 9 to contract, the scraper 11 is pulled to move in the direction away from the raw material on the surface of the chute 10, the raw material is clamped below the air inlet 17 by the back shell 1, then the interior of the raw material is blown to expand and enlarge, after a period of blowing, the plastic raw material is expanded to a state close to the volume of the shell 1, at the moment, the blowing is stopped, after a period of standing, the shell 1 is opened to enable the left part and the right part of the shell 1 to be far away from each other, meanwhile, the, the compression spring 9 loses its tension and releases the force previously compressed, and the scraper 11 is pushed out and brought into contact with the top end of the raw material under the guidance of the guide wheel 12.

Through placing the raw materials inside casing 1, when the casing 1 of controlling two parts is close to each other, screw rod 2 rotary drive cam 3 is rotatory, and the rotation direction of the cam 3 of symmetry is opposite, so cam 3 meshing cardboard 4 makes connecting block 6 and card post 19 be close to each other, card post 19 extrudees the elastic plate 20 when both contact, so connecting block 6 and card post 19 accomplish the joint, and the raw materials after the bearing blowing is accomplished, and when the casing 1 left and right parts were kept away from each other, cam 3 reversal was kept away from both, card post 19 and connecting block 6 are kept away from each other, the raw materials drop.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.

Claims

1. A plastic products are with revising overlap blow molding equipment, includes casing (1), its characterized in that: two side walls in the shell (1) are movably connected with screw rods (2), the bottom of each screw rod (2) is movably connected with a cam (3), the surface of each cam (3) is movably connected with a clamping plate (4), the bottom of the shell (1) is provided with a sliding rail (5), and the surface of each sliding rail (5) is slidably connected with a connecting block (6);

the top swing joint of screw rod (2) has spool (7), the surface winding of spool (7) has stay cord (8), the other end swing joint of stay cord (8) has compression spring (9), the back swing joint of compression spring (9) has spout (10), the surface swing joint of compression spring (9) has scraper (11), the equal swing joint in both sides of scraper (11) has leading wheel (12), one side swing joint that scraper (11) were kept away from in leading wheel (12) has spring beam (13), the one end swing joint that compression spring (9) were kept away from in scraper (11) has torsion plate (14).

2. A modified flash blow molding apparatus for plastic articles as claimed in claim 1 wherein: the lower end of the torsion plate (14) is movably connected with a pressure applying bag (15), the surface of the pressure applying bag (15) is movably connected with a steering rod (16), and the pressure applying bag (15) and the top of the shell (1) are in an intercommunicating design.

3. A modified flash blow molding apparatus for plastic articles as claimed in claim 1 wherein: an air inlet (17) is formed in the top of the shell (1), a sealing cover (18) is movably connected to the surface of the air inlet (17), and the length of the sealing cover (18) is larger than the width of the air inlet (17).

4. A modified flash blow molding apparatus for plastic articles as claimed in claim 1 wherein: the number of the clamping plates (4) is two, the clamping columns (19) are fixedly connected to the surfaces of the clamping plates (4) on the right side, and the size of each clamping column (19) is matched with that of each connecting block (6).

5. A modified flash blow molding apparatus for plastic articles as claimed in claim 1 wherein: the scrapers (11) and the compression springs (9) form a group, two groups are provided in total, and the sum of the extending lengths of the two groups of scrapers (11) is matched with the width of the shell (1).

6. A modified flash blow molding apparatus for plastic articles as claimed in claim 1 wherein: the sliding rail (5) and the connecting block (6) are not located on the same plane, an elastic plate (20) is movably connected inside the connecting block (6), and the length of the elastic plate (20) is matched with that of the connecting block (6).

7. A modified flash blow molding apparatus for plastic articles as claimed in claim 1 wherein: and a meshing wheel is arranged at the joint of the cam (3) and the screw rod (2), and the diameter of the meshing wheel is one half of that of the cam (3).

8. A modified flash blow molding apparatus for plastic articles as claimed in claim 1 wherein: the length of the pull rope (8) is smaller than the compression length of the compression spring (9), and the pull rope (8) is made of nylon and has no elasticity.