CN112721107B

CN112721107B - Blow molding die structure

Info

Publication number: CN112721107B
Application number: CN202011566965.9A
Authority: CN
Inventors: 陈艺力; 高寿; 关红民
Original assignee: Foshan Gongzheng Packaging Equipment Technology Co ltd
Current assignee: Foshan Gongzheng Packaging Equipment Technology Co ltd
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2024-09-03
Anticipated expiration: 2040-12-25
Also published as: CN112721107A

Abstract

The invention discloses a blow mould structure, comprising at least one group of blow mould components; the blow molding module comprises a blow molding die, a first fixing plate, a second fixing plate, two first bearing plates, two second bearing plates and a third fixing plate, and the supporting mechanism comprises a fixing seat and a guiding structure; the fixed seat is positioned below the third fixed plate and is fixedly arranged on the first fixed plate; the guide structure comprises a shaft sleeve and a guide shaft, and the shaft sleeve is fixedly arranged on the bottom surface of the third fixing plate; the lower end of the guide shaft is arranged on the fixed seat, and the upper end of the guide shaft is inserted into the shaft sleeve; the jacking mechanism comprises a transverse push plate, a plurality of vertical jacking rods and a plurality of vertical connectors, wherein the transverse push plate is positioned below the fixed seat; the upper end of the vertical jacking rod is a free end, and the lower end of the vertical jacking rod is fixedly connected with the top surface of the transverse pushing plate; the upper end of the vertical connector is fixedly connected with the bottom surface of the transverse pushing plate, and the lower end of the vertical connector is used for being connected with the output end of the power mechanism. The invention has the characteristics of convenient disassembly and assembly, even stress and long service life.

Description

Blow molding die structure

Technical Field

The invention relates to a mold, in particular to a blow molding mold structure of a blow molding machine.

Background

The rotary conveying type blow molding machine comprises an injection molding process, a temperature adjusting process, a blow molding process and a taking-out process. In a rotary transport blow molding machine, an injection molding station, a temperature control station, a blow molding station, and a take-out station are provided in each of regions in which a transport region of 360 ° is divided into 4 parts. Each station is provided with 4 transfer plates intermittently rotated and conveyed. The transfer plate is intermittently transported to the injection molding station, the temperature adjusting station, the blow molding station and the take-out station in sequence. The blow molding station arranged downstream of the temperature control station in the conveying direction has two rows of blow molds. In the blow molding station, a plurality of pre-blow molded preforms are blow molded into a plurality of containers in two rows of closed blow molds having a pair of blow cavity split molds and a male mold die.

Prior art patent CN201080062534.7 discloses a blow mold unit mounted on the base of a blow molding machine having a blow mold comprising a1 st and a2 nd blow cavity split mold, and a plurality of raised bottom molds. The blow mold unit further has: the 1 st fixing plate is used for fixing the 1 st blow molding cavity combined mold; the 2 nd fixing plate is used for fixing the 2 nd blow molding cavity combined die; a plurality of 1 st bearing plates which are arranged on one side of the two side surfaces of the 1 st blow molding cavity combination mold and the 2 nd blow molding cavity combination mold and are respectively fixed on the 1 st fixing plate and the 2 nd fixing plate; a3 rd fixing plate disposed between the 1 st and 2 nd fixing plates and fixing the plurality of convex bottom dies to the 1 st surface; a plurality of shaft portions hanging down from the 2 nd surface of the 3 rd fixing plate, the lower end of the shaft portions being free end portions; and a plurality of 2 nd bearing plates respectively fixed on the 1 st and the 2 nd fixing plates below the 3 rd fixing plate. The blow mold unit of this structure has the following problems: the bottom die is formed by hanging a plurality of shaft parts from the 2 nd surface of the 3 rd fixing plate, making the lower end be a free end part, and lifting the driving rod by a bottom die lifting part (lifting device), four shaft parts are pushed up by the 1 st and 2 nd connecting parts, and a plurality of convex bottom dies fixed on the 3 rd fixing plate can be clamped. The four shaft portions are brought into contact with the upper ends of the four driving rods of the raised/lowered section (lifting/lowering means) of the raised/lowered mold, and can bear pressure during mold closing of the raised/lowered mold. The shaft part has a fixed end part and a free end part which are fixed on the 3 rd fixed plate, so that the defect of troublesome disassembly and assembly exists, and the shaft part can be subjected to the pressure of the convex bottom die after the die assembly and the die release, so that the service life is reduced. In addition, the free ends of the shaft portions are driven by the lifting devices, respectively, and when one lifting device fails, there is a disadvantage in that the stress is uneven.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention aims to provide a blow molding die structure which has the characteristics of convenience in disassembly and assembly, uniform stress and long service life.

The invention adopts the following technical scheme:

A blow mold structure comprising at least one set of blow mold assemblies; the blow mold assembly includes:

The blow molding mold comprises a first blow molding half mold, a second blow molding half mold and a plurality of convex bottom molds, wherein parting surfaces of the first blow molding half mold and the second blow molding half mold are abutted with each other to form a plurality of cavities; the number of the convex bottom dies is consistent with that of the cavities, and the convex bottom dies are positioned below the cavities;

a first fixing plate for fixing the first blow mold half;

a second fixing plate for fixing a second blow mold half;

two first bearing plates which are respectively arranged on one side of two side surfaces of the first blow molding half die and are fixed on the first fixing plate;

Two second bearing plates which are respectively arranged on one side of two side surfaces of the second blow molding half mold and are fixed on the second fixing plate;

the third fixing plate is arranged between the first fixing plate and the second fixing plate, and the plurality of convex bottom dies are arranged on the top surface of the third fixing plate;

Characterized in that the blow molding module further comprises:

The supporting mechanism comprises a fixed seat and a guiding structure; the fixed seat is positioned below the third fixed plate and is fixedly arranged on the first fixed plate; the guide structure comprises a shaft sleeve and a guide shaft, and the shaft sleeve is fixedly arranged on the bottom surface of the third fixing plate; the lower end of the guide shaft is arranged on the fixed seat, and the upper end of the guide shaft is inserted into the shaft sleeve;

The jacking mechanism comprises a transverse push plate, a plurality of vertical jacking rods and a plurality of vertical connectors, wherein the transverse push plate is positioned below the fixed seat; the upper end of the vertical jacking rod is a free end, and the lower end of the vertical jacking rod is fixedly connected with the top surface of the transverse pushing plate; the upper end of the vertical connector is fixedly connected with the bottom surface of the transverse pushing plate, and the lower end of the vertical connector is used for being connected with the output end of the power mechanism.

In an alternative embodiment, the support mechanism further includes a buffer structure connected between the third fixing plate and the fixing base.

In an alternative embodiment, the buffer structure comprises a first connecting piece, a second connecting piece, a connecting shaft and a spring; the first connecting piece comprises two first vertical connecting plates and a first transverse connecting plate connected to the bottoms of the two first vertical connecting plates, the upper ends of the two vertical connecting plates are fixedly connected with the third fixing plate respectively, and through holes are formed in the first transverse connecting plates; the second connecting piece comprises a second vertical connecting plate and a second transverse connecting plate connected to the top of the second vertical connecting plate, the bottom of the second vertical connecting plate is fixedly connected with the fixing seat, and the free end of the second transverse connecting plate stretches into the space between the two first vertical connecting plates; one end of the connecting shaft is fixedly arranged on the free end of the second transverse connecting plate, and the other end of the connecting shaft is inserted into the through hole; the spring is sleeved on the connecting shaft, the upper end of the spring is abutted with the free end of the second transverse connecting plate, and the lower end of the spring is abutted with the first transverse connecting plate.

In an alternative embodiment, the number of the buffer structures is two, and the buffer structures are symmetrically distributed at the left end and the right end of the fixing seat; the number of the guide structures is two, and the guide structures are symmetrically distributed at the left end and the right end of the fixing seat and are positioned at the inner side of the buffer structure.

In an alternative embodiment, a positioning hole is formed in the bottom surface of the third fixing plate, and the top of the guide shaft can be inserted into the positioning hole through the shaft sleeve.

In an alternative embodiment, the number of vertical lift pins is more than two.

In an optional implementation manner, the fixing seat is provided with avoidance grooves for the vertical jacking rods to pass through, the number of the vertical jacking rods is three, two of the vertical jacking rods are symmetrically distributed at the left end and the right end of the transverse pushing plate, the remaining one vertical jacking rod is located in the middle of the transverse pushing plate, and the free ends of the remaining vertical jacking rods penetrate through the avoidance grooves.

In an alternative embodiment, the first fixing plate, the first blow molding half mold and the two first bearing plates are integrally formed, and the second fixing plate, the second blow molding half mold and the two second bearing plates are integrally formed.

In an alternative embodiment, the number of the blow mold assemblies is two, and the first fixing plates of the two sets of the blow mold assemblies are oppositely arranged on the back surfaces.

In an alternative embodiment, the blow molding machine further comprises two fixing blocks for fixing on a base of the blow molding machine, wherein the two fixing blocks are respectively fixed on one side of two side faces of the first blow molding half mold, and each fixing block is respectively fixedly connected with two first bearing plates located on the same side.

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

The support mechanism of the blow molding die structure comprises a fixed seat and a guide structure; the jacking mechanism comprises a transverse push plate, a vertical jacking rod and a vertical connector; the upper end of the vertical jacking rod is a free end, and the lower end of the vertical jacking rod is fixedly connected with the top surface of the transverse pushing plate; in the die assembly process, a plurality of vertical connectors are driven by a plurality of power mechanisms to ascend, the vertical connectors drive a transverse pushing plate and a vertical lifting rod to ascend, and when the vertical lifting rod is abutted with the bottom surface of a third fixed plate, the third fixed plate, a convex bottom die and a shaft sleeve are driven to ascend until the convex bottom die and a cavity are die assembled; in the demolding process, a plurality of vertical connectors are driven by a plurality of power mechanisms to descend, the vertical connectors drive a transverse pushing plate and a vertical jacking rod to descend, a third fixing plate, a convex bottom die and a shaft sleeve descend under the action of gravity, when the shaft sleeve slides along a guide shaft and descends to be in contact with the top surface of a fixing seat, the fixing seat supports the third fixing plate to complete demolding, and the vertical jacking rod can continue to descend to be separated from the bottom surface of the third fixing plate. In the die assembly process, the plurality of power mechanisms drive the vertical lifting rod to ascend through the transverse pushing plate, so that even stress of the vertical lifting rod can be ensured when a certain power mechanism fails; after demolding, the vertical lifting rod is separated from the bottom surface of the third fixing plate, so that the vertical lifting rod has the advantages of convenience in disassembly and assembly and long service life; therefore, the novel hydraulic lifting device has the characteristics of convenience in disassembly and assembly, uniform stress and long service life.

Drawings

FIG. 1 is an exploded view of a blow mold structure of a first embodiment;

FIG. 2 is a perspective view of a neck mold structure according to the first embodiment;

FIG. 3 is a schematic view of a second blow mold half, a second fixing plate and a second bearing plate according to the first embodiment;

fig. 4 is a schematic structural diagram of a supporting mechanism and a jacking mechanism according to the first embodiment;

FIG. 5 is a schematic cross-sectional view of a blow mold structure according to a first embodiment;

fig. 6 is a perspective view of a blow mold structure of the second embodiment.

In the figure: 11. a first blow mold half; 12. a second blow mold half; 13. a convex bottom die; 20. a first fixing plate; 30. a second fixing plate; 40. a first pressure-bearing plate; 50. a second pressure-bearing plate; 60. a third fixing plate; 61. positioning holes; 70. a support mechanism; 71. a fixing seat; 711. an avoidance groove; 72. a guide structure; 721. a shaft sleeve; 722. a guide shaft; 73. a buffer structure; 731. a first connector; 7311. a first vertical connection plate; 7312. a first transverse connection plate; 732. a second connector; 7321. the second vertical connecting plate; 7322. a second transverse connection plate; 733. a connecting shaft; 734. a spring; 80. a jacking mechanism; 81. a transverse push plate; 82. a vertical lifting rod; 83. a vertical connector; 90. and a fixed block.

Detailed Description

The present application will be further described with reference to the accompanying drawings and detailed description, wherein it is to be understood that, on the premise of no conflict, the following embodiments or technical features may be arbitrarily combined to form new embodiments. Materials and equipment used in this example are commercially available, except as specifically noted. Examples of embodiments are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements throughout or elements having like or similar functionality. The embodiments described below by referring to the drawings are exemplary only for explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present application and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. In the description of the present application, the meaning of "a plurality" is two or more, unless specifically stated otherwise.

In the description of the present application, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be fixedly connected, or may be connected through an intermediary, or may be connected between two elements or may be an interaction relationship between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

The terms first, second and the like in the description and in the claims and in the above-described figures, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Embodiment one:

referring to fig. 1-5, a blow mold structure includes a set of blow mold assemblies; the blow molding module includes:

a blow mold comprising a first blow mold half 11, a second blow mold half 12 and a plurality of convex bottom molds 13, wherein the parting surfaces of the first blow mold half 11 and the second blow mold half 12 are abutted against each other to form a plurality of cavities; the number of the convex bottom dies 13 is consistent with that of the cavities, and the convex bottom dies are positioned below the cavities;

a first fixing plate 20 for fixing the first blow mold half 11;

A second fixing plate 30 for fixing the second blow mold half 12;

Two first bearing plates 40, which are respectively provided on one side of both side surfaces of the first blow mold half 11, and which are fixed to the first fixing plate 20;

two second bearing plates 50, which are respectively provided on one side of both side surfaces of the second blow mold half 12, and which are each fixed to the second fixing plate 30;

a third fixing plate 60 disposed between the first and second fixing plates 20 and 30, and a plurality of convex bottom dies 13 disposed on a top surface of the third fixing plate 60;

The supporting mechanism 70, the supporting mechanism 70 comprises a fixed seat 71 and a guiding structure 72; the fixing seat 71 is located below the third fixing plate 60 and is fixedly mounted on the first fixing plate 20; the guide structure 72 includes a boss 721 and a guide shaft 722, the boss 721 being fixedly installed on the bottom surface of the third fixing plate 60; the lower end of the guide shaft 722 is arranged on the fixed seat 71, and the upper end of the guide shaft 722 is inserted into the shaft sleeve 721;

The jacking mechanism 80, the jacking mechanism 80 comprises a transverse push plate 81, a plurality of vertical jacking rods 82 and a plurality of vertical connectors 83, which are positioned below the fixed seat 71; the upper end of the vertical lifting rod 82 is a free end, and the lower end of the vertical lifting rod is fixedly connected with the top surface of the transverse pushing plate 81; the upper end of the vertical connector 83 is fixedly connected with the bottom surface of the transverse pushing plate 81, and the lower end of the vertical connector is used for being connected with the output end of the power mechanism. In this embodiment, the power mechanism is a cylinder or an oil cylinder.

In the die assembly process, a plurality of vertical connectors 83 are driven by a plurality of power mechanisms to ascend, the plurality of vertical connectors 83 drive a transverse pushing plate 81 and a vertical lifting rod 82 to ascend, and when the vertical lifting rod 82 is abutted against the bottom surface of the third fixing plate 60, the convex bottom die 13 and the shaft sleeve 721 are driven to ascend until the convex bottom die 13 and the cavity are die assembled; in the die assembly process, the plurality of power mechanisms drive the vertical lifting rod 82 to ascend through the transverse pushing plate 81, so that even stress of the vertical lifting rod 82 can be ensured when a certain power mechanism fails.

In the demolding process, the plurality of vertical connectors 83 are driven by the plurality of power mechanisms to descend, the plurality of vertical connectors 83 drive the transverse pushing plate 81 and the vertical jacking rod 82 to descend, the third fixing plate 60, the convex bottom die 13 and the shaft sleeve 721 descend under the action of gravity, when the shaft sleeve 721 slides along the guide shaft 722 and descends to be in contact with the top surface of the fixing seat 71, the fixing seat 71 supports the third fixing plate 60 to finish demolding, and the vertical jacking rod 82 can continue to descend to be separated from the bottom surface of the third fixing plate 60. Because the vertical lifting rod 82 is separated from the bottom surface of the third fixing plate 60 after the demolding, there are advantages of convenient disassembly and long service life.

In a preferred embodiment of the present invention, the supporting mechanism 70 further includes a buffering structure 73, and the buffering structure 73 is connected between the third fixing plate 60 and the fixing base 71. By providing the buffer structure 73, an effective buffer effect can be achieved, and the impact force of the third fixing plate 60, the convex bottom mold 13 and the shaft sleeve 721 to the fixing seat 71 can be absorbed and buffered, so that the shaft sleeve 721 is prevented from generating a large impact sound when contacting with the fixing seat 71, and impact noise can be effectively reduced.

In a preferred embodiment of the present invention, the buffering structure 73 includes a first connector 731, a second connector 732, a connecting shaft 733, and a spring 734; the first connecting piece 731 comprises two first vertical connecting plates 7311 and a first transverse connecting plate 7312 connected to the bottoms of the two first vertical connecting plates 7311, the upper ends of the two vertical connecting plates are respectively and fixedly connected with the third fixing plate 60, and through holes are formed in the first transverse connecting plates 7312; the second connecting piece 732 comprises a second vertical connecting plate 7321 and a second transverse connecting plate 7322 connected to the top of the second vertical connecting plate 7321, the bottom of the second vertical connecting plate 7321 is fixedly connected with the fixing seat 71, and the free end of the second transverse connecting plate 7322 extends between the two first vertical connecting plates 7311; one end of the connecting shaft 733 is fixedly arranged on the free end of the second transverse connecting plate 7322, and the other end of the connecting shaft is inserted into the through hole; the spring 734 is coupled to the connection shaft 733, and has an upper end abutting against a free end of the second transverse connection plate 7322 and a lower end abutting against the first transverse connection plate 7312. In this way, when the third fixing plate 60, the convex bottom mold 13 and the shaft sleeve 721 follow the descending process under the action of gravity, the spring 734 provides a buffering effect, and the free end of the second transverse connecting plate 7322 extends between the two first vertical connecting plates 7311, so that the limiting effect can be achieved, and in addition, the other end of the connecting shaft 733 is inserted into the through hole, so that the guiding effect can be achieved.

In the preferred embodiment of the present invention, the number of the buffer structures 73 is two, and they are symmetrically distributed at the left and right ends of the fixing seat 71; the number of the guide structures 72 is two, and the guide structures are symmetrically distributed at the left and right ends of the fixing seat 71 and are positioned at the inner sides of the buffer structures 73. By the design, the stress is more balanced, and the stability is good.

In a preferred embodiment of the present invention, the bottom surface of the third fixing plate 60 is provided with a positioning hole 61, and the top of the guide shaft 722 can be inserted into the positioning hole 61 through the shaft sleeve 721. By means of the design, the guide shaft 722 and the third fixing plate 60 are tightly matched after demolding, positioning is more accurate, the third fixing plate 60 is prevented from moving slowly, and stability is improved.

In the preferred embodiment of the present invention, the fixing seat 71 is provided with the avoiding grooves 711 for the vertical lifting rods 82 to pass through, and the number of the vertical lifting rods 82 is three, wherein two vertical lifting rods 82 are symmetrically distributed at the left end and the right end of the transverse pushing plate 81, the remaining one vertical lifting rod 82 is located in the middle of the transverse pushing plate 81, and the free end of the remaining one vertical lifting rod 82 penetrates through the avoiding grooves 711. By the design, the third fixing plate 60 is guaranteed to be stressed more uniformly, and the yield of products is improved.

In the preferred embodiment of the present invention, the first fixing plate 20, the first blow mold half 11, and the two first bearing plates 40 are integrally formed, and the second fixing plate 30, the second blow mold half 12, and the two second bearing plates 50 are integrally formed. By the design, the processing precision can be improved, and the material and processing cost can be reduced.

Embodiment two:

Referring to fig. 6, the features of this embodiment are: the number of blow mold assemblies is two, and the first fixing plates 20 of the two sets of blow mold assemblies are oppositely disposed at the back sides.

In a preferred embodiment of the present invention, the blow molding machine further comprises two fixing blocks 90 for fixing to a base of the blow molding machine, wherein the two fixing blocks 90 are respectively fixed to one side of two side surfaces of the first blow molding half mold 11, and each fixing block 90 is respectively fixedly connected to two first bearing plates 40 located on the same side.

The other is the same as in the first embodiment.

Other embodiments:

The number of the blow molding module assemblies is three or more, and the number of the guide structures, the vertical connectors and the vertical lifting rods can be correspondingly adjusted according to actual conditions. Although only certain elements and embodiments of the present application have been illustrated and described, many modifications and changes (e.g., variations in size, dimensions, structure, shape and proportions of the various elements, mounting arrangements, use of materials, colors, orientations, etc.) may be made by those skilled in the art without materially departing from the scope and spirit of the application in the claims.

Finally, it should be noted that: the above embodiments are only preferred embodiments of the present invention, and should not be construed as limiting the scope of the present invention, and any insubstantial changes and substitutions made by those skilled in the art on the basis of the present invention are intended to be within the scope of the present invention as claimed.

Claims

1. A blow mold structure comprising at least one set of blow mold assemblies; the blow mold assembly includes:

a first fixing plate for fixing the first blow mold half;

a second fixing plate for fixing a second blow mold half;

Characterized in that the blow molding module further comprises:

The jacking mechanism comprises a transverse push plate, a plurality of vertical jacking rods and a plurality of vertical connectors, wherein the transverse push plate is positioned below the fixed seat; the upper end of the vertical jacking rod is a free end, and the lower end of the vertical jacking rod is fixedly connected with the top surface of the transverse pushing plate; the upper end of the vertical connector is fixedly connected with the bottom surface of the transverse pushing plate, and the lower end of the vertical connector is used for being connected with the output end of the power mechanism;

the supporting mechanism further comprises a buffer structure, and the buffer structure is connected between the third fixed plate and the fixed seat; the buffer structure comprises a first connecting piece, a second connecting piece, a connecting shaft and a spring; the first connecting piece comprises two first vertical connecting plates and a first transverse connecting plate connected to the bottoms of the two first vertical connecting plates, the upper ends of the two vertical connecting plates are fixedly connected with the third fixing plate respectively, and through holes are formed in the first transverse connecting plates; the second connecting piece comprises a second vertical connecting plate and a second transverse connecting plate connected to the top of the second vertical connecting plate, the bottom of the second vertical connecting plate is fixedly connected with the fixing seat, and the free end of the second transverse connecting plate stretches into the space between the two first vertical connecting plates; one end of the connecting shaft is fixedly arranged on the free end of the second transverse connecting plate, and the other end of the connecting shaft is inserted into the through hole; the spring is sleeved on the connecting shaft, the upper end of the spring is abutted with the free end of the second transverse connecting plate, and the lower end of the spring is abutted with the first transverse connecting plate; the buffer structures are two groups and are symmetrically distributed at the left end and the right end of the fixing seat; the guide structures are two groups, are symmetrically distributed at the left end and the right end of the fixing seat and are positioned at the inner sides of the buffer structures;

the bottom surface of the third fixing plate is provided with a positioning hole, and the top of the guide shaft can penetrate through the shaft sleeve to be inserted into the positioning hole;

the number of the vertical jacking rods is more than two.

2. The blow molding structure according to claim 1, wherein the fixing base is provided with avoidance grooves for vertical lifting rods to pass through, the number of the vertical lifting rods is three, two of the vertical lifting rods are symmetrically distributed at the left end and the right end of the transverse pushing plate, the remaining one vertical lifting rod is located in the middle of the transverse pushing plate, and the free end of the remaining vertical lifting rod penetrates through the avoidance grooves.

3. The blow mold structure of claim 1, wherein the first fixing plate, the first blow mold half, and the two first bearing plates are integrally formed, and the second fixing plate, the second blow mold half, and the two second bearing plates are integrally formed.

4. A blow mould structure according to any of claims 1-3, wherein the number of blow mould assemblies is two, the first fixing plates of the two sets of blow mould assemblies being arranged opposite each other.

5. The blow mold structure according to claim 4, further comprising two fixing blocks for fixing to a base of the blow molding machine, the two fixing blocks being respectively fixed to one side of both sides of the first blow mold half, each fixing block being respectively fixedly connected to two first bearing plates located on the same side.