CN209794531U - Fuel tank blow molding mold - Google Patents

Abstract

the utility model provides a fuel tank blow molding die, which comprises a first die set, a second die set and a clamping mechanism, wherein the first die set comprises a first support plate, a first template and a blowing mechanism; the first template is provided with a first inner cavity used for forming one side surface of the fuel tank, the second module comprises a second template and a second support plate, the second template is provided with a second inner cavity used for forming the other side surface of the fuel tank, the clamping mechanism comprises two sets of clamping components which are oppositely arranged, and each set of clamping component comprises a clamping block used for abutting against the partition plate, a push rod used for pushing the clamping block to move towards the cavity and a linear driving structure used for driving the push rod to move. The utility model is provided with the clamping blocks on the first template and the second template respectively, and is provided with the linear driving structure to push the push rod and drive the clamping blocks to move; when the blank and the partition plate are arranged between the first template and the second template, the partition plate can be clamped and fixed firstly, then the die assembly is directly carried out, and the blow molding is carried out, so that the efficiency is high, and the process is simple.

Description

fuel tank blow molding mold

Technical Field

The utility model belongs to the mould field, more specifically say, relate to a fuel tank blowing mould.

Background

The weight reduction of automobiles has become an important development trend in the automobile industry, and the trend leads to the application of plastics to automobiles to be greatly increased. Fuel tanks of motor vehicles play a very important role as a very critical component in fuel systems of motor vehicles. The plastic fuel tank has the characteristics of light weight and capability of being manufactured according to the space shape of a vehicle chassis, so that the volume of the fuel tank can be increased as much as possible. Plastic fuel tanks are also increasingly used in vehicles. Plastic fuel tanks are currently manufactured by multilayer coextrusion blow molding, generally by placing a blank tube in a mold, and then piercing a needle into the blank to blow high-temperature high-pressure gas into the blank to form the blank.

Because the volume of the automobile fuel tank is large, in order to reduce fuel oscillation in the tank, a partition plate is often required to be arranged in the fuel tank; at present, most blow molding dies use an external bracket to support a partition plate, then preliminarily mold closing is carried out, and pre-blowing is carried out to perform blanks; the diaphragm is then supported by a pitched roof structure, the outer bracket is removed, the mold is fully closed, and finally blow molded to secure the diaphragm in the fuel tank. However, this method has a complicated mold structure, a large number of blowing steps, and low efficiency.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fuel tank blow mold to solve the fuel tank structure and the process complicacy of the blow mold preparation that exists among the prior art, problem of inefficiency.

In order to achieve the above object, the utility model adopts the following technical scheme: the blow molding die for the fuel tank comprises a first die set and a second die set, wherein the first die set comprises a first support plate, a first template supported on the first support plate and a blowing mechanism used for blowing gas into a blank, and the blowing mechanism is installed on the first template; the first template is provided with a first inner cavity for forming one side surface of the fuel tank, the second module comprises a second template and a second support plate for supporting the second template, the second template is provided with a second inner cavity for forming the other side surface of the fuel tank, the first inner cavity and the second inner cavity surround to form a cavity for forming the fuel tank, the fuel tank blow mold further comprises a clamping mechanism for clamping and fixing the partition plate, the clamping mechanism comprises two sets of clamping components which are oppositely arranged, each set of clamping component comprises a clamping block for supporting the partition plate, a push rod for pushing the clamping block to move towards the cavity and a linear driving structure for driving the push rod to move, the two sets of clamping components are respectively arranged on the first template and the second template, and the first template is provided with a first through hole for the corresponding push rod to pass through, and a second through hole for the corresponding push rod to pass through is formed in the second template.

Furthermore, each set of clamping assembly further comprises a guide frame for guiding the push rod to move, guide holes for guiding the push rod to slide are formed in the guide frame, and the guide frames of the two sets of clamping assemblies are respectively fixed on the first template and the second template.

Furthermore, each set of clamping assembly further comprises a guide sleeve, the guide sleeve is sleeved on the push rod, and the guide sleeves of the two sets of clamping assemblies are respectively fixed in the first through hole and the second through hole.

Furthermore, each linear driving structure comprises a push-pull lever, a supporting block and a linear driver, wherein the push-pull lever is hinged with the push rod in the middle area, the supporting block supports one end of the push-pull lever, the linear driver is used for driving the other end of the push-pull lever to swing, the linear driver is hinged with the other end of the push-pull lever, and the supporting block is hinged with the push-pull lever; the support blocks of the two sets of linear driving structures are respectively installed on the first template and the second template, and the linear drivers of the two sets of linear driving structures are respectively installed on the first template and the second template.

Furthermore, the linear driver is a driving cylinder, and one end of a piston rod of the driving cylinder is hinged with the push-pull lever.

Furthermore, each set of clamping assembly further comprises a pressing block used for abutting against the other end of the piston rod of the driving cylinder, the pressing block of the clamping assembly corresponding to the first template is installed on the second template, and the pressing block of the clamping assembly corresponding to the second template is installed on the first template.

Furthermore, the pressing block is provided with a jacking column used for jacking the piston rod of the corresponding driving cylinder.

Furthermore, a first parting cutting edge is arranged on the edge of the first inner cavity of the first template, a second parting cutting edge is arranged on the position, corresponding to the first parting cutting edge, of the second template, a first corrugated groove is formed in the first template on the outer side of the first parting cutting edge, and a second corrugated groove is formed in the second template on the outer side of the second parting cutting edge.

furthermore, four corners of the first template are respectively provided with first cutting edges extending from the first parting edges to the edges of the first template, and the second template is correspondingly provided with second cutting edges matched with the first cutting edges for cutting.

further, fuel tank blow mold still including being used for the centre gripping the double-layered material mechanism of blank stub bar, double-layered material mechanism including install in first holding frame on the first template and be used for with first holding frame cooperation centre gripping the second holding frame of blank stub bar, the second holding frame install in on the second template.

The utility model provides a fuel tank blowing mould's beneficial effect lies in: compared with the prior art, the utility model has the advantages that the clamping blocks are respectively arranged on the first template and the second template, and the linear driving structure is arranged to push the push rod and drive the clamping blocks to move; when the blank and the partition plate are arranged between the first template and the second template, the partition plate can be clamped and fixed firstly, then the die assembly is directly carried out, and the blow molding is carried out, so that the efficiency is high, and the process is simple.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural view of a fuel tank blow mold provided in an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the fuel tank blow mold of FIG. 1;

FIG. 3 is a schematic view of a first mold set of the fuel tank blow mold of FIG. 1;

FIG. 4 is a schematic structural diagram of a first template in the first module shown in FIG. 3;

FIG. 5 is a schematic structural diagram of the blowing mechanism and the positioning structure in the first module shown in FIG. 3;

FIG. 6 is a schematic view of the positioning structure of FIG. 5 with an iron ring mounted thereon;

FIG. 7 is a cross-sectional structural view of the positioning structure of FIG. 6;

FIG. 8 is a schematic structural diagram of a pipe clamping core pulling mechanism in the first module shown in FIG. 3;

FIG. 9 is a schematic view of a second mold set of the fuel tank blow mold of FIG. 1;

FIG. 10 is a schematic structural diagram of a second template in the second module shown in FIG. 9;

FIG. 11 is a schematic structural view of two sets of clamping mechanisms in the fuel tank blow mold of FIG. 1;

FIG. 12 is a schematic view of the set of clamping mechanisms of FIG. 11;

FIG. 13 is a first schematic view of a vent plug in the blow mold for the fuel tank of FIG. 1;

FIG. 14 is a second schematic view of a vent plug in the blow mold for the fuel tank of FIG. 1;

FIG. 15 is a schematic view of the first and second cooling mechanisms of the fuel tank blow mold of FIG. 1;

FIG. 16 is a first schematic view of a combination insert and conditioner pad arrangement of the fuel tank blow mold of FIG. 1;

FIG. 17 is a second schematic view of the assembly of the insert and the conditioner pad of FIG. 16;

Fig. 18 is a schematic structural view of the insert and the conditioner pad of fig. 16 when they are disassembled.

Wherein, in the drawings, the reference numerals are mainly as follows:

100-fuel tank blow molding;

11-a cavity; 15-a material clamping mechanism; 151-first holder; 152-a second holding frame;

20-a first module; 21-a first template; 210-a first lumen; 211-a first parting edge; 212-a first corrugation flute; 213-first cutting edge; 214-a first via; 215-through hole; 217-mounting holes; 221-a first plate; 222-a first header; 223-a first dust guard;

31-a blowing mechanism; 32-a lancet; 32-a gas supply channel; 33-a pushing structure; 331-branch block; 332-push lever; 333-guide column; 334-a pillar; 335-a linear mover; 336-a mounting plate; 337-a support plate;

35-a positioning structure; 351-magnetic attraction piece; 36-a support disk; 361-an accommodating ring groove; 362-first slide hole; 37-a sliding sleeve; 38-a push plate; 381-second slide hole; 39-a jacking cylinder; 392-a third slide hole;

40-a first cooling mechanism; 41-a first cooling channel; 411-a first side flume; 412-a first bottom flume; 42-a first connecting flume; 43-a first catchment block; 44-a first connection pipe;

50-a second module; 51-a second template; 510-a second lumen; 511-a second parting edge; 512-a second corrugation trough; 513-second cutting edge; 514-a second via; 521-a second plate; 522-a second support head; 523-second dust guard;

60-a second cooling mechanism; 61-a second cooling flume; 611-a second side waterway; 612-a second bottom flume; 62-a second connecting flume; 63-a second catchment block; 64-a second connecting tube;

70-a clamping mechanism; 71-a clamping assembly; 711-a clamping block; 712-a push rod; 713-a guide frame; 714-guide sleeve; 72-linear drive configuration; 721-a first link; 722-a first pivot; 723-a second link; 724-a second pivot; 725-a third pivot; 73-push-pull lever; 731-first elongated hole; 732-a second elongated aperture; 74-a support block; 75-a drive cylinder; 752-mounting seat; 76-briquetting; 761-top column; 762-adjusting rod;

81-a vent plug; 810-an exhaust passage; 811-loop sleeve; 812-a cover; 813-connecting rings; 815 — an exhaust channel; 82-an insert; 821-positioning holes; 822-a conical section; 83-a conditioning pad; 831-passing the hole; 825-a receiving groove; 85-a pipe clamping and core pulling mechanism; 851-support; 852-linear pusher; 853-a support seat; 86-a cartridge insert; 861-inverted groove; 87-a slide block; 871-connecting flow channel;

90-a fuel tank; 91-a separator; 93-iron ring.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. 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, "a plurality" means two or more unless specifically limited otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

In the description of the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

in the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

referring to fig. 1 to 18, a blow mold 100 for a fuel tank according to the present invention will now be described. The fuel tank blow molding mold 100 comprises a first mold set 20 and a second mold set 50, wherein the first mold set 20 comprises a first support plate 221, a first mold plate 21 and a blowing mechanism 31, and the first mold plate 21 is supported on the first support plate 221. The blowing mechanism 31 is used for blowing gas into the blank, and the blowing mechanism 31 is arranged on the first template 21; the second module 50 comprises a second template 51 and a second support plate 521, wherein the second template 51 is supported on the second support plate 521; the first mold plate 21 is provided with a first inner cavity 210 for molding one side surface of the fuel tank 90, the second mold plate 51 is provided with a second inner cavity 510 for molding the other side surface of the fuel tank 90, and the first inner cavity 210 and the second inner cavity 510 enclose a cavity 11 for molding the fuel tank 90.

Referring to fig. 1 to 4 and 9 to 12, the fuel tank blow mold 100 further includes a clamping mechanism 70, wherein the clamping mechanism 70 is used for clamping the fixed partition 91; the clamping mechanism 70 comprises two sets of clamping assemblies 71 which are oppositely arranged, each set of clamping assembly 71 comprises a clamping block 711, a push rod 712 and a linear driving structure 72, the two sets of clamping assemblies 71 are respectively arranged on the first template 21 and the second template 51, the clamping blocks 711 are used for abutting against the partition plate 91, and the linear driving structure 72 is used for driving the push rods 712 to move so that the push rods 712 push the clamping blocks 711 to move towards the cavity 11, so that the clamping blocks 711 of the two sets of clamping assemblies 71 are used for clamping the partition plate 91 in a matching manner; the two sets of clamping assemblies 71 are respectively mounted on the first template 21 and the second template 51, the first template 21 is provided with a first through hole 214 for the corresponding push rod 712 to pass through, and the second template 51 is provided with a second through hole 514 for the corresponding push rod 712 to pass through. Therefore, when the fuel tank 90 is blow molded, the partition plate 91 can be arranged between the first template 21 and the second template 51, the clamping blocks 711 of the two sets of clamping assemblies 71 are used for clamping the partition plate 91 in a matching manner, and then mold closing and blow molding are carried out, so that the fuel tank 90 is integrally blow molded, and the fuel tank 90 is simple in process, convenient to manufacture and high in efficiency.

compared with the prior art, the fuel tank blow mold 100 provided by the utility model has the advantages that the clamping blocks 711 are respectively arranged on the first template 21 and the second template 51, and the linear driving structure 72 is arranged to push the push rod 712 to drive the clamping blocks 711 to move; when the blank and the partition plate 91 are placed between the first die plate 21 and the second die plate 51, the partition plate 91 can be clamped and fixed first, and then the die assembly can be performed directly, and the blow molding can be performed, so that the efficiency is high, and the process is simple.

Further, referring to fig. 1 and 11, as an embodiment of the fuel tank blow mold 100 provided by the present invention, there are two sets of the clamping mechanisms 70 to clamp the fixing partition 91 more stably. Of course, in other embodiments, the clamping mechanism 70 may be provided in one set, three sets, etc.

Further, referring to fig. 2 and 12, as an embodiment of the fuel tank blow mold 100 provided by the present invention, each set of clamping assemblies 71 further includes a guiding frame 713 for guiding the push rod 712 to move, the guiding frame 713 is provided with a guiding hole (not labeled in the drawings) for guiding the push rod 712 to slide, and the guiding frames 713 of the two sets of clamping assemblies 71 are respectively fixed on the first mold plate 21 and the second mold plate 51. The guide frame 713 is provided not only to support the push rod 712 but also to guide the movement of the push rod 712.

further, referring to fig. 2 and 12, as an embodiment of the fuel tank blow mold 100 provided by the present invention, each set of clamping assemblies 71 further includes a guide sleeve 714, the guide sleeve 714 is sleeved on the push rod 712, and the guide sleeves 714 of the two sets of clamping assemblies 71 are respectively fixed in the first through hole 214 and the second through hole 514. The guide sleeve 714 is arranged, and the corresponding guide sleeve 714 is arranged in the first through hole 214 of the first template 21 or in the second through hole 514 of the corresponding second template 51, so that the corresponding push rod 712 can be guided to move, direct friction between the push rod 712 and the corresponding first template 21 or second template 51 can be avoided, and abrasion is reduced.

Further, please refer to fig. 2 and 12, as a specific embodiment of the fuel tank blow mold 100 provided by the present invention, each linear driving structure 72 includes a push-pull lever 73, a supporting block 74 and a linear driver, the middle region of the push-pull lever 73 is hinged to the push rod 712, the supporting block 74 supports one end of the push-pull lever 73, the supporting block 74 is hinged to the push-pull lever 73, and the linear driver is used for driving the other end of the push-pull lever 73 to swing, so as to drive the push rod 712 to move linearly through the push-pull lever 73. The structure is more labor-saving and flexible to move. The support blocks 74 of the two sets of linear driving structures 72 are respectively installed on the first template 21 and the second template 51, and the linear drivers of the two sets of linear driving structures 72 are respectively installed on the first template 21 and the second template 51.

Further, referring to fig. 2 and 12, as an embodiment of the fuel tank blow mold 100 provided by the present invention, the linear actuator is a driving cylinder 75, and one end of a piston rod 751 of the driving cylinder 75 is hinged to the push-pull lever 73. The driving cylinder 75 is used, so that the cost is low, the installation and the use are convenient, and the control is convenient. In other embodiments, the linear actuator may be a hydraulic cylinder, a linear motor, or the like. In still other embodiments, the linear drive structure 72 may use a pneumatic cylinder, hydraulic cylinder, linear motor, or the like directly.

Further, referring to fig. 1, fig. 2 and fig. 12, as an embodiment of the fuel tank blow mold 100 provided by the present invention, each set of clamping components 71 further includes a pressing block 76 for abutting against the other end of the piston rod 751 of the driving cylinder 75, the pressing block 76 of the clamping component 71 corresponding to the first mold plate 21 is mounted on the second mold plate 51, and the pressing block 76 of the clamping component 71 corresponding to the second mold plate 51 is mounted on the first mold plate 21. The pressing blocks 76 are arranged, when each set of clamping components 71 clamps the partition 91, the piston rods 751 of the two driving cylinders 75 respectively abut against the two pressing blocks 76, so that the stroke of the driving cylinders 75 is limited by the two pressing blocks 76, and when the first template 21 and the second template 51 are matched, the piston rods 751 of the two driving cylinders 75 can be pushed to reset, and meanwhile, the corresponding two clamping blocks 711 can be ensured to stably clamp the partition 91.

Further, referring to fig. 1, fig. 2 and fig. 12, as an embodiment of the fuel tank blow mold 100 provided by the present invention, a top pillar 761 for pushing a piston rod 751 of a corresponding driving cylinder 75 is installed on the pressing block 76. A top post 761 is provided on the pressing block 76 to better abut against a piston rod 751 of the corresponding driving cylinder 75.

Further, referring to fig. 1, fig. 2 and fig. 12, as a specific embodiment of the fuel tank blow mold 100 provided by the present invention, an adjusting rod 762 for adjusting the stroke of the piston rod 751 of the driving cylinder 75 is installed on each top pillar 761, and the adjusting rod 762 is threadedly installed on the top pillar 761. The adjustment lever 762 is provided to adjust the stroke of the piston rod 751 of the driving cylinder 75 by changing the depth of the adjustment lever 762 attached to the top post 761.

Further, referring to fig. 1, fig. 2 and fig. 12, as an embodiment of the fuel tank blow mold 100 according to the present invention, an air hole (not shown) is opened in the clamping block 711, and an air channel (not shown) is opened in the push rod 712 to better exhaust the air in the cavity 11.

further, referring to fig. 1, fig. 2 and fig. 12, as an embodiment of the fuel tank blow mold 100 provided by the present invention, each set of linear driving structures 72 further includes a first connecting rod 721 connected to the push rod 712, and a first pivot 722 connecting the first connecting rod 721 and the push-pull lever 73, the push-pull lever 73 is provided with a first elongated hole 731 for the first pivot 722 to pass through, and the first elongated hole 731 extends in a length direction of the push-pull lever 73. The first elongated hole 731 is provided to compensate for the arc-shaped swing of the push-pull lever 73, thereby allowing the push rod 712 to linearly travel. Of course, in some embodiments, the first link 721 is hinged to the push rod 712, so that compensation is made by the oscillation of the first link 721.

Further, referring to fig. 1, fig. 2 and fig. 12, as an embodiment of the fuel tank blow mold 100 provided by the present invention, each set of linear driving structure 72 further includes a second connecting rod 723 connected to the linear driver, and a second pivot 724 connecting the second connecting rod 723 and the push-pull lever 73, the push-pull lever 73 is provided with a second elongated hole 732 for the second pivot 724 to pass through, and the second elongated hole 732 extends in a length direction of the push-pull lever 73. The second elongated hole 732 is provided to further compensate for the linear actuator when it is operated linearly, thereby pushing the push-pull lever 73 to swing arcuately. Of course, in some embodiments, the second link 723 is articulated to the linear drive, thereby compensating for the oscillation of the second link 723. Specifically, the second link 723 is connected to a piston rod 751 of the drive cylinder 75.

Further, referring to fig. 1, 2 and 12, as an embodiment of the fuel tank blow mold 100 provided by the present invention, each set of linear driving structures 72 further includes a mounting seat 752 for supporting the linear driver. A mounting pedestal 752 is provided to facilitate mounting of the stationary linear drive.

Further, referring to fig. 1, fig. 2 and fig. 12, as an embodiment of the fuel tank blow mold 100 provided by the present invention, each set of linear driving structures 72 further includes a third pivot 725 connecting the push-pull lever 73 and the supporting block 74, and the push-pull lever 73 is provided with a shaft hole for the third pivot 725 to pass through, so as to hinge the push-pull lever 73 and the supporting block 74.

further, referring to fig. 4 and fig. 10, as an embodiment of the fuel tank blow mold 100 provided by the present invention, a first parting blade 211 is disposed on the edge of the first cavity 210 on the first mold plate 21, a second parting blade 511 is disposed on the second mold plate 51 corresponding to the first parting blade 211, and the first parting blade 211 cooperates with the second parting blade 511 to clamp the edge of the damaged material, so as to blow mold the fuel tank 90; and after clamping, the excess material at the edge of the fuel tank 90 can be cut off to remove the excess material. The first form 21 has a first corrugation groove 212 on the outer side of the first parting edge 211, and the second form 51 has a second corrugation groove 512 on the outer side of the second parting edge 511. The first corrugated groove 212 and the corresponding second corrugated groove 512 are arranged, so that exhaust can be better performed, the heat dissipation area can be increased, and heat dissipation is facilitated.

Further, referring to fig. 4 and fig. 10, as an embodiment of the fuel tank blow mold 100 provided by the present invention, the four corners of the first mold plate 21 are respectively provided with a first cutting edge 213 extending from the first parting edge 211 to the edge of the first mold plate 21, and the second mold plate 51 is correspondingly provided with a second cutting edge 513 cutting with the first cutting edges 213. The first cutting edges 213 are disposed at four corners of the first template 21, and the second cutting edges 513 are correspondingly disposed on the second template 51, so that the edge excess material for manufacturing the fuel tank 90 can be cut, and the edge excess material for manufacturing the fuel tank 90 can be removed conveniently. Of course, in some embodiments, the first template 21 may be provided with more first cutting edges 213, and the second template 51 may be provided with second cutting edges 513 corresponding to the first cutting edges 213.

Further, referring to fig. 1, fig. 3 and fig. 9, as a specific embodiment of the fuel tank blow mold 100 provided by the present invention, the fuel tank blow mold 100 further includes a material clamping mechanism 15 for clamping the stock stub bar, the material clamping mechanism 15 includes a first clamping frame 151 mounted on the first mold plate 21 and a second clamping frame 152 for cooperating with the first clamping frame 151 to clamp the stock stub bar, and the second clamping frame 152 is mounted on the second mold plate 51. The first and second clamping holders 151 and 152 are provided to clamp the portions of the blank extending from the lower sides of the first and second die plates 21 and 51 when the dies are closed, thereby fixing the lower ends of the blanks to facilitate blow molding.

further, please refer to fig. 2 to fig. 7, as a specific embodiment of the fuel tank blow mold 100 provided by the present invention, the first mold plate 21 is provided with the positioning structure 35 therein, the positioning structure 35 is used for detachably positioning the iron ring 93 in the first inner cavity 210, so that during blow molding, the blank expands and abuts against the inner surface of the first inner cavity 210 under the action of high-temperature and high-pressure gas, so that the iron ring 93 can be placed in the blank, and after cooling the molded fuel tank 90, the iron ring 93 is molded on the fuel tank 90, and the connection is firm without extra welding, so as to prevent the fuel tank 90 from deforming.

Further, please refer to fig. 6 and fig. 7, as a specific embodiment of the fuel tank blow mold 100 provided by the present invention, the positioning structure 35 includes a magnetic attraction member 351 for magnetically attracting the positioning iron ring 93, and the magnetic attraction member 351 is installed on the first mold plate 21. The iron ring 93 is magnetically attracted by the magnetic attraction member 351, and during blow molding, the blank is pressed against the iron ring 93 to fuse the iron ring 93 to the case of the fuel tank 90, and after cooling, the iron ring 93 is fixed. Of course, in other embodiments, a snap structure may be provided on the first mold plate 21, and the iron ring 93 may be snapped by the snap structure, so that the iron ring 93 is fused to the fuel tank 90 during blow molding.

Further, please refer to fig. 6 and fig. 7, as a specific embodiment of the fuel tank blow mold 100 provided by the present invention, the magnetic attraction member 351 may be a magnetic ring or a plurality of magnets, and the plurality of magnets are arranged in an annular array, so as to stably attract the magnetic ring 93.

Further, please refer to fig. 6 and fig. 7, as a specific embodiment of the fuel tank blow mold 100 provided by the present invention, the positioning structure 35 further includes a supporting plate 36, the magnetic element 351 is installed on the supporting plate 36, and the supporting plate 36 is installed in the first mold plate 21. The support plate 36 is provided to mount and fix the magnetic attraction member 351. Of course, in other embodiments, the magnetic member 351 can be directly fixed on the first mold plate 21.

Further, please refer to fig. 6 and 7, as a specific embodiment of the fuel tank blow mold 100 of the present invention, a receiving ring groove 361 for positioning the iron ring 93 is opened in the supporting plate 36, and the magnetic element 351 is disposed in the receiving ring groove 361. Set up holding annular 361 in supporting disk 36 to the fixed piece 351 of inhaling is inhaled to the installation, when the iron ring 93 is inhaled to the magnetism of piece 351 simultaneously, the location iron ring 93 that can be better.

further, referring to fig. 6 and 7, as a specific embodiment of the fuel tank blow mold 100 provided by the present invention, the positioning structure 35 further includes a sliding sleeve 37 installed in the first mold plate 21 and an ejecting cylinder 39 for ejecting the supporting plate 36, and the supporting plate 36 is installed in the sliding sleeve 37. The first mold plate 21 is provided with a through hole 215, the sliding sleeve 37 is installed in the through hole 215, and the support plate 36 is installed in the sliding sleeve 37, so that the support plate 36 can be pushed by the ejector cylinder 39 during blow molding, and the iron ring 93 is pushed out towards the fuel tank 90, so that the iron ring 93 can be better fused to the shell of the fuel tank 90.

further, referring to fig. 6 and 7, as an embodiment of the fuel tank blow mold 100 provided by the present invention, the positioning structure 35 further includes a push plate 38 slidably mounted in the sliding sleeve 37, the push plate 38 is connected to a piston rod 391 of the pushing cylinder 39, and the supporting plate 36 is mounted on the push plate 38. The push disc 38 is arranged and can slide in the sliding sleeve 37 more stably, so that the support disc 36 is pushed to slide along the sliding sleeve 37; in addition, the support plate 36 and the push plate 38 can be manufactured separately to reduce the machining accuracy requirement.

Further, referring to fig. 2 and 5, as an embodiment of the fuel tank blow mold 100 provided by the present invention, the blowing mechanism 31 includes a needle 32 and a pushing structure 33, the needle 32 is used for piercing the blank to blow high-temperature and high-pressure gas into the blank so as to blow mold the blank; the pushing structure 33 is used to drive the lancet 32 into the blank. The puncture needle 32 is provided with a gas supply channel 321 for passing high-temperature and high-pressure gas, the sliding sleeve 37 is arranged in the through hole 215, the supporting disk 36 is provided with a first sliding hole 362 for passing the puncture needle 32, and the pushing disk 38 is provided with a second sliding hole 381 for passing the puncture needle 32. The structure arranges the puncture needle 32 in the middle of the support plate 36, so that the puncture needle 32 and the magnetic attraction piece 351 can be better positioned, and the accurate positioning of the opening on the fuel tank 90 and the iron ring 93 can be further ensured. Of course, in some fuel tanks 90, the iron ring 93 does not need to have a structure with an opening, and the air blowing mechanism 31 may be provided separately from the positioning structure 35.

Further, referring to fig. 5 to 7, as an embodiment of the fuel tank blow mold 100 provided by the present invention, the ejector cylinder 39 is installed in the sliding sleeve 37 to reduce the occupied space and facilitate the installation. In other embodiments, the ejector cylinder 39 may be mounted to the first die plate 21.

Further, referring to fig. 5 to 7, as an embodiment of the fuel tank blow mold 100 provided by the present invention, a third slide hole 392 is formed in the piston rod 391 of the pushing cylinder 39 for guiding the needle 32 to slide. The structure enables the needle 32 to directly pass through the pushing cylinder 39, reduces the occupied space and enables the pushing cylinder 39 to push the supporting plate 36 to move more stably.

Further, referring to fig. 2 and 5, as an embodiment of the fuel tank blow mold 100 provided by the present invention, the pushing structure 33 includes a support block 331, a pushing lever 332, a guide post 333, a support column 334 and a linear mover 335, the linear mover 335 is hinged on the first mold plate 21, the support column 334 is installed on the first mold plate 21, the guide post 333 is installed on the first mold plate 21, the lancet 32 is installed on the support block 331, and the lancet 32 is supported by the support block 331. The push lever 332 is used to push the support 331 to move, and thus the lancet 32 to move. The support block 331 is provided with a sliding hole for the guide post 333 to fit through, so that the guide post 333 guides the support block 331 to move along the guide post 333; the pillar 334 is hinged with a middle section of the push lever 332 to support the push lever 332 through the pillar 334; one end of the push lever 332 is hinged to the support block 331, and the other end of the push lever 332 is hinged to the linear mover 335, so that the linear mover 335 can drive the other end of the push lever 332 to swing, and the support block 331 is driven to move along the guide post 333 by the one end of the push lever 332.

further, referring to fig. 2 and 5, as an embodiment of the fuel tank blow mold 100 provided by the present invention, the pushing structure 33 further includes a mounting plate 336 installed on the first mold plate 21, the pillar 334 and the guiding post 333 are fixed on the mounting plate 336, a supporting plate 337 is fixed on the mounting plate 336, and the linear mover 335 is hinged on the supporting plate 337. A mounting plate 336 is provided for mounting the fixed pushing structure 33.

Further, referring to fig. 2 and 5, as an embodiment of the fuel tank blow mold 100 provided by the present invention, the linear mover 335 is a cylinder, a linear motor or a hydraulic cylinder. Of course, in other embodiments, the air cylinder can be used directly to move the lancet 32.

Further, referring to fig. 3, fig. 4, fig. 9, fig. 10, fig. 13 and fig. 14, as a specific embodiment of the fuel tank blow mold 100 of the present invention, the first mold plate 21 and the second mold plate 51 are both provided with a plurality of exhaust channels 815, and each exhaust channel 815 is communicated with the cavity 11 to exhaust the gas in the cavity 11; the first inner cavity 210 and the second inner cavity 510 are installed with a plurality of exhaust plugs 81 respectively covering each exhaust channel 815, and each exhaust plug 81 is opened with a plurality of exhaust channels 810. A vent plug 81 is arranged on each vent channel 815, and a vent channel 810 is arranged on the vent plug 81, so that gas in the cavity 11 can enter the vent channels 815 from the vent channels 810; the vent plug 81 is arranged, so that when the fuel tank 90 is formed by blow molding, a blank can be prevented from entering the vent channel 815, a convex point is prevented from being formed on the shell of the fuel tank 90, and the appearance of the fuel tank 90 is ensured.

Further, referring to fig. 13 and 14, as an embodiment of the fuel tank blow mold 100 provided by the present invention, each exhaust channel 810 is a long and narrow opening opened on the exhaust plug 81. The exhaust passages 810 are made of the narrow and long openings, so that the area of each exhaust passage 810 is larger, the exhaust is convenient, the good strength of the exhaust plug 81 can be ensured, and the blank is prevented from being extruded into the exhaust passages 810 better. Of course, in other embodiments, the exhaust channel 810 may also be a hole-like structure such as a circular hole.

Further, referring to fig. 13 and 14, as a specific embodiment of the fuel tank blow mold 100 provided by the present invention, the exhaust channels 810 are arranged in parallel and at intervals to facilitate processing and manufacturing, and design and layout.

Further, referring to fig. 13 and 14, as an embodiment of the fuel tank blow mold 100 provided by the present invention, each vent plug 81 includes a ring housing 811 and a cover 812 covering one end of the ring housing 811, and each vent 810 is opened on the cover 812. The ring sleeve 811 is provided to support the cover 812 and facilitate installation in the exhaust duct 815, and the exhaust duct 810 is provided to the cover 812, so that the strength of the exhaust plug 81 can be improved and the exhaust duct 810 can be easily manufactured. Of course, in other embodiments, a channel may be formed in a unitary pillar structure to form the vent plug 81.

Further, referring to fig. 13 and 14, as an embodiment of the fuel tank blow mold 100 according to the present invention, a connecting ring 813 is disposed in the ring sleeve 811, and the connecting ring 813 is connected to the cover 812. A connection ring 813 is provided to connect portions between the adjacent two exhaust passages 810 to increase the strength of the exhaust plug 81.

Further, referring to fig. 13 and 14, as an embodiment of the fuel tank blow mold 100 of the present invention, the ring housing 811, the connecting ring 813 and the cover 812 of each vent plug 81 are integrally formed. The collar 811, the coupling ring 813, and the cover 812 are integrally formed, so that the strength of the vent plug 81 and the coupling strength between the cover 812 and the collar 811 and the coupling ring 813 can be ensured.

Further, referring to fig. 1, fig. 3, fig. 4, fig. 9, fig. 10 and fig. 15, as an embodiment of the fuel tank blow mold 100 according to the present invention, the fuel tank blow mold 100 further includes a first cooling mechanism 40 and a second cooling mechanism 60, the first cooling mechanism 40 includes a plurality of first cooling channels 41 disposed in the first mold plate 21, each first cooling channel 41 includes two first side channels 411 disposed on two sides of the first mold plate 21 and a first bottom channel 412 connected to the two first side channels 411, each first bottom channel 412 is disposed in the first mold plate 21 and adjacent to the bottom surface of the first inner cavity 210, and the first cooling mechanism 40 further includes two first connecting water channels 42 connected to the corresponding first side channels 411 on each side of the first mold plate 21; after blow molding, the cavity 11 is rapidly cooled by supplying cooling water to the first cooling water channel 41, and the blank is cooled and molded. The external water supply device is connected to a first connecting water channel 42 and supplies cooling water, and the cooling water flows out from the corresponding first side water channel 411, the first bottom water channel 412 and the other first side water channel 411 to the other first connecting water channel 42, so that the circulation of the cooling water with the external cooling device is realized, the cooling water is guaranteed to flow into the first cooling water channel 41, the first inner cavity 210 of the first template 21 is cooled more quickly, and the cooling efficiency is improved. Similarly, the second cooling mechanism 60 includes a plurality of second cooling water channels 61 disposed in the second mold plate 51, each second cooling water channel 61 includes two second side water channels 611 disposed on two sides of the second mold plate 51, respectively, and a second bottom water channel 612 connected to the two second side water channels 611, each second bottom water channel 612 is disposed in the second mold plate 51 at a position adjacent to the bottom surface of the second inner cavity 510, and the second cooling mechanism 60 further includes two second connecting water channels 62 connected to each second side water channel 611 corresponding to each side of the second mold plate 51, respectively. After the blow molding, the cavity 11 is rapidly cooled by supplying cooling water to the second cooling water channel 61, so that the blank is cooled and molded. The external water supply device is connected to one second connecting water channel 62 and supplies cooling water, and the cooling water flows out from the corresponding second side water channel 611, the second bottom water channel 612 and the other second side water channel 611 to the other second connecting water channel 62, so that the cooling water is circulated with the external cooling device, the cooling water is supplied to the second cooling water channel 61, the second inner cavity 510 of the second template 51 is cooled more quickly, and the cooling efficiency is improved.

further, referring to fig. 15, as an embodiment of the fuel tank blow mold 100 provided by the present invention, an included angle between each first side water channel 411 and the corresponding first bottom water channel 412 is an obtuse angle, so that the cooling water can more smoothly pass through the first cooling water channel 41, and the cooling efficiency is improved. Similarly, the included angle between each second side water channel 611 and the corresponding second bottom water channel 612 is an obtuse angle, so that the cooling water can more smoothly pass through the second cooling water channel 61, and the cooling efficiency is improved.

Further, referring to fig. 1, fig. 3, fig. 9 and fig. 15, as an embodiment of the fuel tank blow mold 100 provided by the present invention, the first cooling mechanism 40 further includes two first water collecting blocks 43 and first connecting pipes 44 respectively connecting the two first water collecting blocks 43 with the two first connecting water channels 42; the second cooling mechanism 60 further includes two second water collection blocks 63 and second connection pipes 64 connecting the two second water collection blocks 63 with the two second connection water passages 62, respectively. Two first water collecting blocks 43 and two second water collecting blocks 63 are provided to facilitate connection with an external cooling water supply and recovery device for convenient use.

further, please refer to fig. 3, 9, 16 to 18, as an embodiment of the fuel tank blow mold 100 according to the present invention, a plurality of mold inserts 82 for forming the area of the fuel tank 90 contacting the vehicle body are detachably mounted in the first mold plate 21 and the second mold plate 51, and a receiving groove 825 for cooperatively mounting each mold insert 82 is correspondingly formed in the first mold plate 21 and the second mold plate 51. The first mold plate 21 and the second mold plate 51 are respectively provided with accommodating grooves 825, and the insert 82 is detachably mounted in each accommodating groove 825, so that when the fuel tank 90 is manufactured in a trial mode, the insert 82 forms an area of the fuel tank 90, which is in contact with a vehicle body, and the insert 82 with different sizes can be replaced, so that the area of the fuel tank 90, which is in contact with the vehicle body, is prevented from generating size difference.

Further, referring to fig. 3, 9, 16 to 18, as a specific embodiment of the fuel tank blow mold 100 of the present invention, each insert 82 is provided with a positioning hole 821, and the bottom of the corresponding accommodating groove 825 is correspondingly provided with a fixing hole (not shown). A positioning hole 821 is formed in the insert 82, and a fixing hole is formed in the bottom of the receiving groove 825 so that the insert 82 is fixed in the receiving groove 825 using a fixing member such as a screw.

Further, referring to fig. 16 to 18, as an embodiment of the fuel tank blow mold 100 provided by the present invention, an end of the positioning hole 821 facing away from the fixing hole has a tapered section 822. Thus, when the insert 82 is mounted in the receiving groove 825 using the fixing member, the tapered section 822 positioned thereon may perform an automatic positioning function, so as to facilitate the mounting and fixing of the insert 82.

Further, referring to fig. 3, 9, 16 to 18, as an embodiment of the fuel tank blow mold 100 of the present invention, the bottom surface of each receiving groove 825 is a plane, and the back surface of each insert 82 is a plane. The bottom surfaces of the accommodating grooves 825 and the back surfaces of the inserts 82 are all provided with uniform planes, so that when the inserts 82 are installed in the corresponding accommodating grooves 825, the inserts 82 can be better supported, and the stability of the inserts 82 is ensured.

Further, please refer to fig. 3, 9, 16 to 18, as a specific embodiment of the fuel tank blow mold 100 according to the present invention, the fuel tank blow mold 100 further includes a regulating pad 83 for adjusting the height of each insert 82 in the corresponding containing groove 825, and a through hole 831 is formed in a position corresponding to the positioning hole 821 on each regulating pad 83. The adjusting pad 83 is arranged, so that when the insert 82 is manufactured, only one size of insert 82 can be manufactured, and then the height of the insert 82 in the corresponding accommodating groove 825 can be adjusted by using the adjusting pad 83, so that the insert is convenient to manufacture, convenient to debug and capable of reducing cost.

Further, referring to fig. 16 to 18, as an embodiment of the fuel tank blow mold 100 provided by the present invention, the shape of the adjusting pad 83 corresponding to each insert 82 matches with the shape of the back surface of the insert 82, and the structure can more stably mount and fix the insert 82 in the corresponding receiving groove 825 during use.

Further, referring to fig. 16 to 18, as an embodiment of the fuel tank blow mold 100 provided by the present invention, the thickness of each adjusting pad 83 is 1-5mm, so that different numbers of adjusting pads 83 can be disposed on the back of each insert 82 according to the need during trial production. Preferably, the thickness of the conditioning pad 83 is 3 mm.

Further, referring to fig. 3 and 9, as an embodiment of the fuel tank blow mold 100 provided by the present invention, the shapes of the inserts 82 are different according to the shape of the contact area of the fuel tank 90 and the vehicle body, such as a portion of the inserts 82 is circular, a portion of the inserts 82 is long, and the like.

Further, please refer to fig. 3, fig. 4 and fig. 8, as a specific embodiment of the fuel tank blow mold 100 provided by the present invention, the first module 20 further includes a tube clamping core pulling mechanism 85, the tube clamping core pulling mechanism 85 includes a tube clamping insert 86 for forming an oil tube fixing point on the fuel tank 90, a support 851 for supporting the tube clamping insert 86, and a linear pusher 852 for driving the tube clamping insert 86 to slide in the support 851, a hole (not shown) is opened in the support 851, the tube clamping insert 86 is slidably mounted in the hole, a mounting hole 217 is opened in the first mold plate 21, the support 851 is mounted in the mounting hole 217, and the tube clamping insert 86 is detachably connected with the linear pusher 852. Because the fuel tank 90 is connected with the oil pipe and the pipe clamping insert 86 is arranged, the position of the oil pipe can be fixed on the fuel tank 90; the tube clamping insert 86 is slidably mounted on the support 851, and a linear pusher 852 is arranged to drive the tube clamping insert 86, so that when the mold is opened, the tube clamping insert 86 is driven to move by the linear pusher 852, and core-pulling and demolding of the tube clamping insert 86 are facilitated.

further, referring to fig. 3, fig. 4 and fig. 8, as a specific embodiment of the fuel tank blow mold 100 provided by the present invention, the reverse-buckling grooves 861 are respectively formed on both sides of the pipe clamping insert 86, and the depth range of the reverse-buckling grooves 861 is 2-3 mm. The reverse-buckling grooves 861 are formed in the two sides of the pipe clamping insert 86, so that when the fuel tank 90 is molded, reverse buckling can be formed on the fuel tank 90, and therefore oil pipes can be clamped and fixed well. Preferably, the depth of the undercut 861 is 2.5 mm.

further, please refer to fig. 8, as a specific embodiment of the fuel tank blow mold 100 provided by the present invention, the top of the cross section of the pipe clamping insert 86 is arc-shaped, so that the bottom of the corresponding groove on the formed fuel tank 90 is arc-shaped, thereby better matching with the fuel pipe.

Further, please refer to fig. 8, as a specific embodiment of the fuel tank blow mold 100 provided by the present invention, a cooling water flow channel (not shown in the figure) is provided in the tube clamping insert 86, a slider 87 is installed in the hole, the slider 87 is detachably connected to the tube clamping insert 86, a connection flow channel 871 respectively communicated with two ends of the cooling water flow channel is provided in the slider 87, a connection joint (not shown in the figure) respectively communicated with each connection flow channel 871 and used for connecting external cooling water is installed on the slider 87, the slider 87 is connected to the linear pusher 852, so that the slider 87 is pushed by the linear pusher 852 to move, and the tube clamping insert 86 is further pushed to move; in addition, a cooling water flow passage is arranged in the pipe clamping insert 86, and a connecting flow passage 871 communicated with the cooling water flow passage is arranged in the slider 87, so that cooling water can be introduced into the pipe clamping insert 86, and the pipe clamping insert 86 can be conveniently cooled so as to facilitate blow molding.

Further, referring to fig. 8, as a specific embodiment of the fuel tank blow mold 100 provided by the present invention, the linear pusher 852 is an oil cylinder, and the slider 87 is connected to a piston rod of the oil cylinder. Of course, in other embodiments, the linear actuator 852 may be a linear motor, an air cylinder, etc.

Further, please refer to fig. 8, as a specific embodiment of the fuel tank blow mold 100 provided by the present invention, the pipe clamping and core pulling mechanism 85 further includes a supporting seat 853, the supporting seat 853 is installed on the first mold plate 21, and the oil cylinder is installed on the supporting seat 853. A supporting seat 853 is provided to facilitate installation and fixation of the pipe clamping and core pulling mechanism 85.

Further, referring to fig. 1, fig. 3 and fig. 9, as an embodiment of the fuel tank blow mold 100 provided by the present invention, the first mold set 20 further includes a first supporting head 222 connecting the first support plate 221 and the first mold plate 21, and the second mold set 50 further includes a second supporting head 522 connecting the second support plate 521 and the second mold plate 51. First brace 222 and second brace 522 are provided to connect first leg 221 to first form 21 and second leg 521 to second form 51.

Further, referring to fig. 1, fig. 3 and fig. 9, as an embodiment of the fuel tank blow mold 100 provided by the present invention, the first module 20 further includes a first dust guard 223 covering between the first support plate 221 and the first mold plate 21; the first dust-proof plate 223 is arranged, so that sundries can be prevented from falling between the first support plate 221 and the first template 21, and parts between the first support plate 221 and the first template 21 can be better guaranteed. Similarly, the second module 50 further includes a second dust guard 523 covering between the second support plate 521 and the second template 51; the second dust-proof plate 523 is arranged, so that sundries can be prevented from falling between the second support plate 521 and the second template 51, and parts between the second support plate 521 and the second template 51 can be better guaranteed.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. the fuel tank blow molding die comprises a first die set and a second die set, wherein the first die set comprises a first support plate, a first template supported on the first support plate and a blowing mechanism used for blowing gas into a blank, and the blowing mechanism is arranged on the first template; be equipped with the first inner chamber that is used for one side of shaping fuel tank on the first template, the second module includes second template and support the second extension board of second template, be equipped with the second inner chamber that is used for the another side of shaping fuel tank on the second template, first inner chamber with the second inner chamber surrounds and is used for the shaping the die cavity of fuel tank, its characterized in that: the fuel tank blow molding mold further comprises a clamping mechanism used for clamping the fixed partition plate, the clamping mechanism comprises two sets of clamping assemblies which are arranged oppositely, each set of clamping assembly comprises a clamping block used for abutting against the partition plate, a push rod used for pushing the clamping block to move towards the cavity and a linear driving structure used for driving the push rod to move, the two sets of clamping assemblies are respectively installed on the first template and the second template, a first through hole used for the corresponding push rod to pass through is formed in the first template, and a second through hole used for the corresponding push rod to pass through is formed in the second template.

2. A fuel tank blow mold as defined in claim 1 wherein: each set of clamping assembly further comprises a guide frame used for guiding the push rod to move, guide holes used for guiding the push rod to slide are formed in the guide frames, and the guide frames of the two sets of clamping assemblies are respectively fixed on the first template and the second template.

3. a fuel tank blow mold as defined in claim 2 wherein: each set of clamping assembly further comprises a guide sleeve, the guide sleeve is sleeved on the push rod, and the guide sleeves of the two sets of clamping assemblies are respectively fixed in the first through hole and the second through hole.

4. A fuel tank blow mold as defined in claim 2 wherein: each linear driving structure comprises a push-pull lever, a supporting block and a linear driver, wherein the push-pull lever is hinged with the push rod in the middle area, the supporting block supports one end of the push-pull lever, the linear driver is used for driving the other end of the push-pull lever to swing, the linear driver is hinged with the other end of the push-pull lever, and the supporting block is hinged with the push-pull lever; the support blocks of the two sets of linear driving structures are respectively installed on the first template and the second template, and the linear drivers of the two sets of linear driving structures are respectively installed on the first template and the second template.

5. a fuel tank blow mold as defined in claim 4 wherein: the linear driver is a driving cylinder, and one end of a piston rod of the driving cylinder is hinged with the push-pull lever.

6. A fuel tank blow mold as defined in claim 5 wherein: each set of clamping assembly further comprises a pressing block used for abutting against the other end of the piston rod of the driving air cylinder, the pressing block of the clamping assembly corresponding to the first template is installed on the second template, and the pressing block of the clamping assembly corresponding to the second template is installed on the first template.

7. A fuel tank blow mold as defined in claim 6 wherein: and the pressing block is provided with a jacking column used for jacking the piston rod of the corresponding driving cylinder.

8. Fuel tank blow mould according to any of the claims 1-7, characterized in that: the edge of the first inner cavity of the first template is provided with a first parting cutting edge, the position of the second template, corresponding to the first parting cutting edge, is provided with a second parting cutting edge, the first template is provided with a first corrugated groove on the outer side of the first parting cutting edge, and the second template is provided with a second corrugated groove on the outer side of the second parting cutting edge.

9. A fuel tank blow mold as set forth in claim 8 wherein: the four corners of the first template are respectively provided with first cutting edges extending from the first parting edges to the edges of the first template, and the second template is correspondingly provided with second cutting edges matched with the first cutting edges for cutting.

10. Fuel tank blow mould according to any of the claims 1-7, characterized in that: the fuel tank blow molding mould is characterized by further comprising a material clamping mechanism for clamping the blank stub bar, wherein the material clamping mechanism comprises a first clamping frame arranged on the first template and a second clamping frame used for clamping the blank stub bar in a matching manner with the first clamping frame, and the second clamping frame is arranged on the second template.