CN112477071B

CN112477071B - Blow mold easy to demould and using method thereof

Info

Publication number: CN112477071B
Application number: CN202011476493.8A
Authority: CN
Inventors: 王大鹏
Original assignee: Anhui Yintai Plastic Co ltd
Current assignee: Anhui Yintai Plastic Co ltd
Priority date: 2020-12-14
Filing date: 2020-12-14
Publication date: 2022-05-10
Anticipated expiration: 2040-12-14
Also published as: CN112477071A

Abstract

The invention discloses a blow mould easy to demould and a using method thereof, comprising a first compound module and a second compound module, wherein the first compound module and the second compound module are arranged, the side surfaces of the first compound module and the second compound module are provided with demoulding grooves, the demoulding grooves are provided with mounting bars and knocking blocks, when the mould is opened, the first moving rod and the second moving rod move mutually and drive the knocking blocks on the mounting bars to move, the side surfaces of the first blow mould and the second blow mould are knocked continuously, so that the plastic product is demoulded smoothly, the labor intensity of workers is reduced, the production efficiency is improved, the risk of injury of workers is reduced, a water-cooling loop pipe is arranged in the first mounting groove and the second mounting groove, and cooling water flow is injected in the blow moulding process, so that the plastic product is cooled while being moulded, the blow moulding efficiency is improved, and the time is saved, meanwhile, the space for placing, standing and cooling the plastic products is saved.

Description

Blow mold easy to demould and using method thereof

Technical Field

The invention relates to a blow mold, in particular to an easy-demoulding blow mold and a using method thereof.

Background

Extrusion blow molding is a process for manufacturing hollow thermoplastic articles such as bottles, pails, cans, cases and containers for packaging food, beverages, cosmetics, pharmaceuticals and commodities.

The existing blow molding die can realize the molding of plastic products, but the phenomena of sticking to the die and difficult demolding easily occur in the demolding process, production workers are often required to perform finished product demolding, the labor intensity of the workers is increased, the production efficiency is influenced, and meanwhile, the risk of injury of the workers in the production process is increased.

Disclosure of Invention

The invention aims to provide a blow mold easy to demold and a using method thereof, wherein a first mold block and a second mold block are arranged, demolding grooves are formed on the side surfaces of the first mold block and the second mold block, the demoulding groove is provided with a mounting strip and a knocking block, the first moving rod and the second moving rod move mutually and drive the knocking block on the mounting strip to move when the mould is opened, the side surfaces of the first blow molding die and the second blow molding die are continuously knocked, so that the plastic product is smoothly demoulded, the labor intensity of workers is reduced, meanwhile, the production efficiency is improved, the risk of injury of workers is reduced, and by arranging the water-cooling loop pipes in the first mounting groove and the second mounting groove, and the cooling water flow is injected in the blow molding process, so that the plastic product is cooled while being molded, the blow molding efficiency is improved, the time is saved, and the space for placing, standing and cooling the plastic product is saved.

The technical problems solved by the invention are as follows:

(1) how to set up the first matched mold block and the second matched mold block, and set up the stripping groove in the side of the first matched mold block and the second matched mold block, set up mounting bar and strike the piece in the stripping groove, strike the side of the first blow molding mould, second blow molding mould continuously through the mutual motion of first movement lever and second movement lever and drive the striking piece on the mounting bar to move when the die sinking, make the plastic products demold smoothly, solve the problem that the plastic products are difficult to slip out smoothly from the die cavity in the prior art;

(2) how through set up water-cooling return pipe in first mounting groove and second mounting groove to inject cooling water flow in the blow molding process, make plastic products cool off when the shaping, solve the problem that plastic products need to stew the cooling and waste time and space among the prior art.

The purpose of the invention can be realized by the following technical scheme: a blow mold easy to release comprises a base plate, a guide rail, a sliding block, a first mold closing module, a second mold closing module, a guide pillar, a limiting block, a first compression spring, a mold closing motor, a mounting block, a lead screw, a first blow mold, a second blow mold, a water-cooling loop pipe, a support pillar, a first moving rod, a second moving rod, a connecting rod, a mounting bar, a connecting column, a second compression spring, a knocking block, a rubber pad, a third compression spring and a thimble, wherein the top of the base plate is symmetrically provided with the first mold closing module and the second mold closing module, the sliding block is symmetrically and fixedly mounted at the bottom of the first mold closing module and the bottom of the second mold closing module, and the first mold closing module and the second mold closing module are both in sliding connection with the guide rail through the sliding block;

the first die closing block and the second die closing block are internally provided with a die release groove, a mounting bar is arranged in the die release groove, the mounting bar is vertically arranged, one side of the mounting bar is provided with a plurality of floating grooves at equal intervals, one end of a connecting column is arranged in each floating groove, one end of the connecting column arranged in each floating groove is fixedly connected with a stop block, each stop block is in sliding fit with the corresponding floating groove, one end, far away from the corresponding stop block, of the connecting column is fixedly connected with a knocking block, one side of each knocking block is fixedly connected with a rubber pad, the outer side of each connecting column is provided with a second compression spring, and two ends of each second compression spring are respectively abutted against the side face of the knocking block and the side face of the mounting bar;

the mold release device comprises a first mold closing block, a second mold closing block and a first mold closing block, and is characterized in that a first moving rod is arranged in a mold release groove in the first mold closing block, a second moving rod is arranged in a mold release groove in the second mold closing block, one end of the first moving rod and one end of the second moving rod are fixedly connected with corresponding mold release groove mounting bars respectively, one end, far away from the mounting bars, of the first moving rod and one end, far away from the mounting bars, of the second moving rod are arranged in a crossed mode, a supporting column is arranged at the bottom of the first moving rod, the first moving rod and the second moving rod are rotatably connected through the supporting column, the bottom of the supporting column is fixedly connected with a substrate, connecting rods are arranged at the end portions of the first moving rod and the second moving rod, and the first moving rod and the second moving rod are fixedly connected with the first mold closing block and the second mold closing block respectively through the connecting rods.

The invention has further technical improvements that: the base plate is characterized in that guide pillars are symmetrically arranged right above the base plate, the guide pillars all penetrate through the first die assembly and the second die assembly, first compression springs are arranged on the outer sides of two ends of each guide pillar, limiting blocks are fixedly connected to two ends of each guide pillar, one end of each first compression spring is in butt joint with the corresponding limiting block, and the other end of each first compression spring is in butt joint with the side face of the first die assembly or the side face of the second die assembly.

The invention has further technical improvements that: the automatic assembling device is characterized in that mounting blocks are symmetrically and fixedly mounted at the top of the base plate, a lead screw is arranged between the two mounting blocks, two ends of the lead screw are rotatably connected with the mounting blocks through bearings, a die assembly motor is arranged at one end of the lead screw, the end part of an output shaft of the die assembly motor is fixedly connected with one end of the lead screw through a coupler, two threads with equal length and opposite screwing directions are arranged on the outer side of the lead screw, moving blocks are arranged on the outer sides of the two threads, and the two moving blocks are connected with the lead screw in a meshed mode through the threads.

The invention has further technical improvements that: first mounting groove has been seted up to one side symmetry of first compound die piece, the second mounting groove has been seted up to one side symmetry of second compound die piece, the cross section of first mounting groove and second mounting groove is semi-circular structure, first mounting groove and second mounting groove one-to-one and mutually support, be provided with first blow mould in the first mounting groove, be provided with second blow mould in the second mounting groove, first blow mould and second blow mould one-to-one and mutually support, be provided with water-cooling return pipe in first mounting groove and the second mounting groove, water-cooling return pipe is continuous U type structure.

The invention has further technical improvements that: the side surfaces of the first blow molding die and the second blow molding die are provided with cavities, the shapes and the sizes of the two cavities are completely consistent, the first mounting groove is communicated with the demolding groove formed in the first mold closing block, and the second mounting groove is communicated with the demolding groove formed in the second mold closing block.

The invention has further technical improvements that: the ejector pin mounting groove has all been seted up to the bottom of first compound die block and second compound die block, be provided with the ejector pin in the ejector pin mounting groove, the bottom of ejector pin is provided with third compression spring, the one end of third compression spring and the bottom fixed connection of ejector pin, the other end of third compression spring and the tank bottom fixed connection of ejector pin mounting groove.

The using method specifically comprises the following steps:

the method comprises the following steps: when the blow molding work is started, the first mold closing module and the second mold closing module are in a separated state, the mold closing motor is started to enable the screw rod to rotate, the two moving blocks drive the first mold closing module and the second mold closing module to approach and close each other under the action of two sections of threads with opposite rotation directions arranged on the screw rod, and the first blow molding mold and the second blow molding mold wrap blow molding materials between the first mold closing module and the second mold closing module;

step two: blowing and shaping a blow molding material wrapped between a first blow molding die and a second blow molding die, simultaneously introducing cooling water flow into a water-cooling loop pipe, cooling the formed plastic product, after cooling, starting a die assembly motor again to enable an output shaft of the die assembly motor to rotate reversely, driving a screw rod to rotate reversely therewith to drive a first die assembly and a second die assembly to be away from each other, thereby respectively driving two connecting rods fixedly connected with the first die assembly and the second die assembly to move in a reverse direction, further driving a first moving rod and a second moving rod to rotate around a supporting column relatively, enabling one ends of the first moving rod and the second moving rod arranged in a die release groove to be close to each other, and further driving mounting strips fixedly connected with the first moving rod and the second moving rod to be close to each other;

step three: the mounting bar motion drives the piece motion of strikeing rather than floating the connection to the messenger fixes and strikes the lateral wall contact of rubber pad and first blow moulding mould and second blow moulding mould of piece side and strikeing, because strike the piece and float with the mounting bar and be connected, strike the piece and strike first blow moulding mould and second blow moulding mould when contacting, second compression spring receives the extrusion and takes place elastic deformation, after breaking away from the contact, second compression spring reconversion and promotion are strikeed the piece and are carried out the small amplitude and strike first blow moulding mould and second blow moulding mould in succession, cooperate the thimble to accomplish plastic products's drawing of patterns together.

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

1. when the invention is used, the die closing motor is started, the output shaft of the die closing motor rotates reversely, the screw rod rotates reversely along with the die closing motor to drive the first die closing module and the second die closing module to be away from each other, so as to respectively drive the two connecting rods fixedly connected with the first die closing module and the second die closing module to move in the opposite directions, further drive the first moving rod and the second moving rod to rotate relatively around the supporting column, enable one ends of the first moving rod and the second moving rod, which are arranged in the stripping groove, to be close to each other, so as to drive the mounting bars fixedly connected with the first moving rod and the second moving rod to be close to each other, drive the knocking block in floating connection with the mounting bars to move, so as to enable the rubber pad fixed on the side surface of the knocking block to be in contact with the side walls of the first blow molding die and the second blow molding die and knock the first blow molding die and the second blow molding die to be in contact, the second compression spring receives the extrusion and takes place elastic deformation, after breaking away from the contact, second compression spring reconversion and promotion are strikeed the piece and are carried out the small amplitude to first blow mould and second blow mould in succession, the drawing of patterns of plastic products is accomplished together to the cooperation thimble, through setting up first compound die block and second compound die block, and set up the drawing of patterns groove in the side of first compound die block and second compound die block, set up the mounting bar in the drawing of patterns groove and strike the piece, strike the piece motion on the driving mounting bar through first motion pole and second motion pole reciprocal motion when the die sinking, to first blow mould, strike in succession the side of second blow mould, make plastic products drawing of patterns smooth, artificial intensity of labour has been reduced, and simultaneously, the production efficiency is improved, the injured risk of staff has been reduced.

2. Blow moulding material to the parcel between first blow mould and second blow mould and blow moulding, let in cooling water flow in the water-cooling return pipe simultaneously, cool off fashioned plastic products, through set up water-cooling return pipe in first mounting groove and second mounting groove, and inject cooling water flow in the blow moulding process, make plastic products cool off in the shaping, the efficiency of blow moulding has been improved, the time is saved, the refrigerated space of stewing is put with plastic products to the while also having saved.

Drawings

To facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a first blow mold cavity configuration of the present invention;

FIG. 3 is a front view of the first mold clamping block of the present invention connected to a water cooling circuit pipe;

FIG. 4 is a schematic view of the internal structure of the stripping tank of the present invention.

In the figure: 1. a substrate; 2. a guide rail; 3. a slider; 4. a first mold clamping module; 5. a second mold clamping module; 6. a guide post; 7. a limiting block; 8. a first compression spring; 9. a mold closing motor; 10. mounting blocks; 11. a screw rod; 12. a first blow mold; 13. a second blow mold; 15. a water-cooled loop pipe; 16. a support pillar; 17. a first motion bar; 18. a second motion bar; 19. a connecting rod; 20. mounting a bar; 21. connecting columns; 22. a second compression spring; 23. knocking the block; 24. a rubber pad; 25. a third compression spring; 26. and (4) a thimble.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood 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. 1-4, an easy-to-demold blow mold includes a substrate 1, a guide rail 2, a slider 3, a first mold clamping block 4, a second mold clamping block 5, a guide pillar 6, a limiting block 7, a first compression spring 8, a mold clamping motor 9, a mounting block 10, a screw rod 11, a first blow mold 12, a second blow mold 13, a water-cooled loop pipe 15, a support pillar 16, a first moving rod 17, a second moving rod 18, a connecting rod 19, a mounting bar 20, a connecting rod 21, a second compression spring 22, a knocking block 23, a rubber pad 24, a third compression spring 25 and an ejector pin 26, wherein the first mold clamping block 4 and the second mold clamping block 5 are symmetrically arranged on the top of the substrate 1, the slider 3 is symmetrically and fixedly mounted on the bottoms of the first mold clamping block 4 and the second mold clamping block 5, and both the first mold clamping block 4 and the second clamping block 5 are slidably connected to the guide rail 2 through the slider 3;

the first mold closing module 4 and the second mold closing module 5 are both provided with a mold releasing groove, a mounting bar 20 is arranged in the mold releasing groove, the mounting bar 20 is vertically arranged, one side of the mounting bar 20 is equidistantly provided with a plurality of floating grooves, one end of a connecting column 21 is arranged in each floating groove, one end of the connecting column 21 arranged in each floating groove is fixedly connected with a stop block, the stop block is in sliding fit with the floating grooves, one end, far away from the stop block, of the connecting column 21 is fixedly connected with a knocking block 23, one side of the knocking block 23 is fixedly connected with a rubber pad 24, the outer side of the connecting column 21 is provided with a second compression spring 22, and two ends of the second compression spring 22 are respectively abutted against the side face of the knocking block 23 and the side face of the mounting bar 20;

a first moving rod 17 is arranged in a demolding groove in the first mold closing module 4, a second moving rod 18 is arranged in a demolding groove in the second mold closing module 5, one ends of the first moving rod 17 and the second moving rod 18 are respectively and fixedly connected with corresponding demolding groove inner mounting bars 20, one ends, far away from the mounting bars 20, of the first moving rod 17 and the second moving rod 18 are arranged in a crossed mode, a supporting column 16 is arranged at the bottom of the first moving rod 17, the first moving rod 17 and the second moving rod 18 are rotatably connected through the supporting column 16, the bottom of the supporting column 16 is fixedly connected with the substrate 1, connecting rods 19 are arranged at the end portions of the first moving rod 17 and the second moving rod 18, and the first moving rod 17 and the second moving rod 18 are respectively and fixedly connected with the first mold closing module 4 and the second mold closing module 5 through the connecting rods 19.

The invention has further technical improvements that: guide pillars 6 are symmetrically arranged right above the substrate 1, the guide pillars 6 all penetrate through the first mold assembly 4 and the second mold assembly 5, first compression springs 8 are arranged on the outer sides of two ends of the guide pillars 6, two limiting blocks 7 are fixedly connected to two ends of the guide pillars 6, one ends of the first compression springs 8 are in butt joint with the limiting blocks 7, and the other ends of the first compression springs 8 are in butt joint with the side faces of the first mold assembly 4 or the second mold assembly 5.

The invention has further technical improvements that: the automatic assembling device is characterized in that mounting blocks 10 are symmetrically and fixedly mounted at the top of the base plate 1, a lead screw 11 is arranged between the two mounting blocks 10, two ends of the lead screw 11 are rotatably connected with the mounting blocks 10 through bearings, a die assembly motor 9 is arranged at one end of the lead screw 11, the end part of an output shaft of the die assembly motor 9 is fixedly connected with one end of the lead screw 11 through a coupler, two threads with equal length and opposite rotation directions are arranged on the outer side of the lead screw 11, moving blocks are arranged on the outer sides of the two threads, and the two moving blocks are connected with the lead screw 11 in a meshed mode through the threads.

The invention has further technical improvements that: first mounting groove has been seted up to one side symmetry of first compound die block 4, the second mounting groove has been seted up to one side symmetry of second compound die block 5, the cross section of first mounting groove and second mounting groove is semi-circular structure, first mounting groove and second mounting groove one-to-one and mutually support, be provided with first blowing mould 12 in the first mounting groove, be provided with second blowing mould 13 in the second mounting groove, first blowing mould 12 and second blowing mould 13 one-to-one and mutually support, be provided with water-cooling return pipe 15 in first mounting groove and the second mounting groove, water-cooling return pipe 15 is continuous U type structure.

The invention has further technical improvements that: the side of first blowing mould 12 and second blowing mould 13 has all seted up the die cavity, and the shape and size of two die cavities is identical completely, the drawing of patterns groove through connection of seting up in first mounting groove and the first matched mould 4, the drawing of patterns groove through connection of seting up in second mounting groove and the second matched mould 5.

The invention has further technical improvements that: thimble mounting grooves have all been seted up to the bottom of first compound die block 4 and second compound die block 5, be provided with thimble 26 in the thimble mounting groove, the bottom of thimble 26 is provided with third compression spring 25, the one end of third compression spring 25 and the bottom fixed connection of thimble 26, the other end of third compression spring 25 and the tank bottom fixed connection of thimble mounting groove.

The using method specifically comprises the following steps:

the method comprises the following steps: when the blow molding work is started, the first mold closing module 4 and the second mold closing module 5 are in a separated state, the mold closing motor 9 is started to enable the screw rod 11 to rotate, under the action of two sections of threads with opposite rotation directions arranged on the screw rod 11, the two moving blocks drive the first mold closing module 4 and the second mold closing module 5 to be close to each other and to be closed, and the first blow mold 12 and the second blow mold 13 wrap blow molding materials between the first mold closing module and the second mold closing module;

step two: blowing and shaping the blow molding material wrapped between the first blow molding die 12 and the second blow molding die 13, introducing cooling water flow into the water-cooling loop pipe 15, cooling the molded plastic product, after cooling, starting the mold closing motor 9 again, enabling the output shaft of the mold closing motor 9 to rotate reversely, driving the screw rod 11 to rotate reversely therewith, driving the first mold closing block 4 and the second mold closing block 5 to be away from each other, thereby respectively driving the two connecting rods 19 fixedly connected with the first mold closing block 4 and the second mold closing block 5 to move backwards, further driving the first moving rod 17 and the second moving rod 18 to rotate relatively around the supporting column 16, enabling one ends of the first moving rod 17 and the second moving rod 18 arranged in the mold releasing groove to be close to each other, and further driving the mounting strips 20 fixedly connected with the first moving rod 17 and the second moving rod 18 to be close to each other;

step three: the mounting bar 20 moves to drive the knocking block 23 connected with the mounting bar in a floating mode to move, so that the rubber pad 24 fixed on the side face of the knocking block 23 is in contact with and knocks the side walls of the first blow mold 12 and the second blow mold 13, due to the fact that the knocking block 23 is in floating connection with the mounting bar 20, when the knocking block 23 knocks and contacts the first blow mold 12 and the second blow mold 13, the second compression spring 22 is extruded to generate elastic deformation, after the knocking block is separated from the contact, the second compression spring 22 restores to the original shape and pushes the knocking block 23 to knock the first blow mold 12 and the second blow mold 13 continuously in a small range, and demolding of plastic products is completed together with the ejector pin 26.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation and a specific orientation configuration and operation, and thus, should not be construed as limiting the present invention. Furthermore, "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate a number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, the meaning of "a plurality" is two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through two or more elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art. While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.

Claims

1. The utility model provides an easy demoulding's blowing mould which characterized in that: the device comprises a substrate (1), wherein a first mold clamping module (4) and a second mold clamping module (5) are symmetrically arranged at the top of the substrate (1), sliders (3) are symmetrically and fixedly mounted at the bottoms of the first mold clamping module (4) and the second mold clamping module (5), and the first mold clamping module (4) and the second mold clamping module (5) are both in sliding connection with a guide rail (2) through the sliders (3);

the first mold closing module (4) and the second mold closing module (5) are both provided with a mold releasing groove, a mounting bar (20) is arranged in the demoulding groove, the mounting bar (20) is vertically arranged, a plurality of floating grooves are equidistantly arranged on one side of the mounting bar (20), one end of a connecting column (21) is arranged in each floating groove, one end of the connecting column (21) arranged in the floating groove is fixedly connected with a stop block which is in sliding fit with the floating groove, one end of the connecting column (21) far away from the stop block is fixedly connected with a knocking block (23), one side of the knocking block (23) is fixedly connected with a rubber pad (24), the outer side of the connecting column (21) is provided with a second compression spring (22), two ends of the second compression spring (22) are respectively abutted with the side surface of the knocking block (23) and the side surface of the mounting bar (20);

a first moving rod (17) is arranged in a demolding groove in the first mold closing module (4), a second moving rod (18) is arranged in a demolding groove in the second mold closing module (5), one ends of the first moving rod (17) and the second moving rod (18) are fixedly connected with corresponding demolding groove inner mounting strips (20), one ends, far away from the mounting strips (20), of the first moving rod (17) and the second moving rod (18) are arranged in a crossed mode, a supporting column (16) is arranged at the bottom of the first moving rod (17), the first moving rod (17) and the second moving rod (18) are rotatably connected through the supporting column (16), the bottom of the supporting column (16) is fixedly connected with the substrate (1), connecting rods (19) are arranged at the end portions of the first moving rod (17) and the second moving rod (18), and the first moving rod (17) and the second moving rod (18) are respectively connected with the first mold closing module (4) and the second mold closing module (5) through the connecting rods (19) ) Fixedly connecting;

a first mounting groove is symmetrically formed in one side of the first mold closing module (4), a second mounting groove is symmetrically formed in one side of the second mold closing module (5), the cross sections of the first mounting groove and the second mounting groove are of semicircular structures, the first mounting groove and the second mounting groove are in one-to-one correspondence and are matched with each other, a first blow molding die (12) is arranged in the first mounting groove, a second blow molding die (13) is arranged in the second mounting groove, the first blow molding die (12) and the second blow molding die (13) are in one-to-one correspondence and are matched with each other, water-cooling return pipes (15) are arranged in the first mounting groove and the second mounting groove, and the water-cooling return pipes (15) are of a continuous U-shaped structure;

the side of first blow molding mould (12) and second blow molding mould (13) has all seted up the die cavity, and the shape and size of two die cavities is unanimous completely, the drawing of patterns groove through connection of seting up in first mounting groove and the first matched mould (4), the drawing of patterns groove through connection of seting up in second mounting groove and the second matched mould (5).

2. The easy-to-release blow mold according to claim 1, wherein guide pillars (6) are symmetrically arranged right above the base plate (1), two guide pillars (6) penetrate through the first mold block (4) and the second mold block (5), a first compression spring (8) is arranged outside each of two ends of each guide pillar (6), two ends of each guide pillar (6) are fixedly connected with a limit block (7), one end of each first compression spring (8) abuts against the limit block (7), and the other end of each first compression spring (8) abuts against the side surface of the first mold block (4) or the second mold block (5).

3. The easy-release blow mold according to claim 1, wherein the top of the base plate (1) is symmetrically and fixedly provided with mounting blocks (10), a lead screw (11) is arranged between two of the mounting blocks (10), both ends of the lead screw (11) are rotatably connected with the mounting blocks (10) through bearings, one end of the lead screw (11) is provided with a mold closing motor (9), the end of an output shaft of the mold closing motor (9) is fixedly connected with one end of the lead screw (11) through a coupler, the outer side of the lead screw (11) is provided with two sections of threads with equal length and opposite rotation directions, the outer sides of the two sections of threads are provided with moving blocks, and the two moving blocks are connected with the lead screw (11) in a meshing manner through the threads.

4. The blow mold easy to strip of claim 1, wherein the first mold assembly (4) and the second mold assembly (5) each have a bottom portion formed with an ejector pin mounting groove, an ejector pin (26) is disposed in the ejector pin mounting groove, a third compression spring (25) is disposed at the bottom portion of the ejector pin (26), one end of the third compression spring (25) is fixedly connected to the bottom portion of the ejector pin (26), and the other end of the third compression spring (25) is fixedly connected to the bottom portion of the ejector pin mounting groove.

5. The use method of the blow mold easy to demould is characterized by comprising the following steps:

the method comprises the following steps: when the blow molding work is started, the first mold closing module (4) and the second mold closing module (5) are in a separated state, the mold closing motor (9) is started to enable the screw rod (11) to rotate, under the action of two sections of threads with opposite rotation directions arranged on the screw rod (11), the two moving blocks drive the first mold closing module (4) and the second mold closing module (5) to mutually approach and close, and the first blow molding mold (12) and the second blow molding mold (13) wrap blow molding materials between the first mold closing module and the second mold closing module;

step two: blowing and shaping the blow molding material wrapped between the first blow molding die (12) and the second blow molding die (13), simultaneously introducing cooling water flow into the water-cooling loop pipe (15), cooling the formed plastic product, starting the mold closing motor (9) again after cooling is finished, enabling an output shaft of the mold closing motor (9) to rotate reversely, driving the first mold closing module (4) and the second mold closing module (5) to be away from each other by the lead screw (11) rotating reversely therewith, thereby respectively driving two connecting rods (19) fixedly connected with the first die block (4) and the second die block (5) to move back to back, thereby driving the first motion rod (17) and the second motion rod (18) to rotate relatively around the supporting column (16) to enable one ends of the first motion rod (17) and the second motion rod (18) arranged in the demoulding groove to be close to each other, thereby driving the mounting bars (20) fixedly connected with the first moving rod (17) and the second moving rod (18) to approach each other;

step three: the mounting bar (20) moves to drive the knocking block (23) in floating connection with the mounting bar to move, so that the rubber pad (24) fixed on the side face of the knocking block (23) is in contact with and knocks the side walls of the first blow mold (12) and the second blow mold (13), due to the fact that the knocking block (23) is in floating connection with the mounting bar (20), when the knocking block (23) knocks and contacts the first blow mold (12) and the second blow mold (13), the second compression spring (22) is extruded to generate elastic deformation, after the knocking block (23) is separated from the contact, the second compression spring (22) restores to the original state and pushes the knocking block (23) to continuously knock the first blow mold (12) and the second blow mold (13) in a small amplitude, and demolding of plastic products is completed together with the ejector pin (26).