Automatic mold opening and closing system of special-shaped prefabricated part and vertical construction method

Abstract

The invention discloses an automatic mold opening and closing system of a special-shaped prefabricated part and a vertical construction method. The automatic mold opening and closing system comprises the following steps that S1, a bottom mold, a gold bell jar jig frame and a first inner mold are installed; s2, a steel bar binding frame is installed, and a gold bell jar section steel bar cage is bound; s3, the steel bar binding frame is dismantled, and the first outer mold is closed; s4, concrete is poured into the gold bell jar section; s5, after the gold bell jar section is formed, a height connecting frame is hoisted; s6, a second inner mold is hoisted and fixed, a steel bar binding frame is installed on the elevated frame, then middle section steel bars are bound, and a middle section steel bar cage is formed; s7, pier cap section steel bars and lifting point steel bars are constructed, and a second outer mold is installed; s8, pier body and pier cap section concrete is poured; s9, after the prefabricated part is formed, the second outer mold, the height connecting frame and the inner mold are dismantled; and S10, the formed prefabricated part is vertically hoisted and moved to the pier base, and the prefabricated part is connected with the pier base. According to the method, segmented construction of the gold bell jar section, the middle section and the pier cap section is optimized, and the production efficiency and quality of pier body prefabrication are improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of pier column construction, in particular to an automatic opening and closing mold system of a special-shaped prefabricated component and a vertical construction method. BACKGROUND

[0002] In modern bridge construction, in order to improve construction efficiency, the pier body is often prefabricated.

[0003] A prefabricated pier body is a thin-walled hollow pier, the bottom bell jar (similar in shape to a bell jar) and the top pier cap of the prefabricated pier body are special-shaped structures (not conventional cylindrical shapes), and the steel bar installation precision is low, the formwork installation and removal engineering quantity is large, and the installation precision cannot be guaranteed by using conventional construction methods.

[0004] The prefabricated pier body has the characteristics of large-size variable cross-section, long and large middle section, and top stage with a pier cap, resulting in high and difficult steel bar matching and binding precision, and great difficulty in concrete pouring and vibrating. The prefabricated pier body joint quality is high, and the section alignment precision is high. The internal mass concrete cast-in-place construction of the bell jar requires high requirements, and the crack control is difficult. SUMMARY

[0005] The application aims to provide an automatic opening and closing mold system of a special-shaped prefabricated component and a vertical construction method. The first outer mold of the bottom section bell jar section adopts an automatic opening and closing mold system, which reduces the deformation of the mold caused by repeated installation and removal, saves the construction site and labor; the pier cap section steel bar adopts vertical binding, horizontal turning, matching and docking technologies, realizes factory-like assembly line construction, improves the pier body steel bar processing and installation quality and construction efficiency, and improves the bridge industrialized construction level; through technical improvement and optimization, automation application greatly reduces manual operation, improves the pier body prefabrication production efficiency and quality, and through the implementation of key technologies, the prefabricated pier body adopts factory-like production mode, has the advantages of size accuracy, quality stability, short construction period and the like; compared with the traditional cast-in-place concrete pier, the prefabricated concrete pier can better adapt to various complex terrains and weather conditions, effectively ensuring the stability and safety.

[0006] The application provides a vertical construction method of a special-shaped prefabricated component. A vertical construction method of a special-shaped prefabricated component, the special-shaped prefabricated component comprises a bell jar section, an intermediate section and a pier cap section arranged in sequence from bottom to top, the cross-sectional areas of the bell jar section and the pier cap section are both greater than the cross-sectional area of the intermediate section, and the method comprises the following steps. S1, installing a bottom mold, a bell jar jig and a first inner mold; S2, installing a steel bar binding frame and binding epoxy steel bars and embedded bars outside the first inner mold to form a bell jar section steel bar cage; S3, remove the steel binding frame, and close the first outer mold; S4, pour concrete on the bell-shaped cover section; S5, after the bell-shaped cover section is formed, hoist the connecting frame; S6, hoist the second inner mold and complete the fixation, install the steel binding frame on the connecting frame, and then bind the middle section steel bars to form a steel bar cage; S7, construct the pier cap section steel bars and hoisting point steel bars, and install the second outer mold; S8, pour concrete on the pier body and pier cap section; S9, after the precast component is formed, remove the second outer mold, connecting frame and inner mold; S10, vertically hoist and move the formed precast component to the pier base, and connect the precast component with the pier base.

[0007] By adopting the above technical scheme, the method adopts the method of fixed base, vertical precast, vertical moving and vertical hoisting, combines the segmented construction of the bell-shaped cover section and the middle section and the pier cap section, improves the construction efficiency under the condition of ensuring the construction precision, improves the pier body precast production efficiency and quality, and the precast pier body adopts the factory production mode, has the advantages of accurate size, stable quality, short construction period and the like, compared with the traditional site poured concrete pier, the precast concrete pier can better adapt to various complex terrains and climate conditions, and effectively ensures the stability and safety.

[0008] Optionally, the inside of the special-shaped precast component is provided with an inner hole from top to bottom, the inner hole comprises a first inner hole part, a second inner hole part and a third inner hole part from bottom to top, and the cross-sectional areas of the first inner hole part, the second inner hole part and the third inner hole part gradually decrease.

[0009] Optionally, before the epoxy steel bars are bound, the positioning steel bars are first installed through the reinforcing bar frame, and then the epoxy steel bars and the embedded bars are bound on the positioning steel bars; The reinforcing bar frame is installed on the first inner mold through the connecting support, the reinforcing bar frame is located above the first inner mold, after the epoxy steel bars and the embedded bars are bound, the connecting support is removed, and the reinforcing bar frame is removed by hoisting.

[0010] Through the above technical scheme, the positioning steel bars are constructed through the reinforcing bar frame, the positioning accuracy and construction efficiency of the positioning steel bars are improved, and the reinforcing bar frame is installed by using the first inner mold, so that the construction cost is reduced.

[0011] Optionally, in step S5, after the bell-shaped cover section is formed, the first outer mold is removed, then the connecting frame is hoisted and installed on the bell-shaped cover section, the connecting frame is connected with a plurality of brackets, the plurality of brackets are arranged along the circumference of the bell-shaped cover section and abut against the side wall of the bell-shaped cover section, the side wall of the bell-shaped cover section is provided with a reserved embedded plate, and the embedded plate is connected with the bracket.

[0012] Through the technical scheme, the high connection frame is arranged through the gold bell cover section, so that the cost is saved, the construction difficulty is reduced, the precision of subsequent construction is improved, and the consistency between the middle section, the pier cap section and the gold bell cover section is ensured.

[0013] Optionally, in step S7, the steel bar binding frame installed on the high connection frame is removed first, and then the second outer form is installed on the high connection frame.

[0014] Optionally, in step S7, the pier cap section steel bars are bound through the vertical binding frame on the ground to form a pier cap section steel bar cage, and a lifting point steel bar is welded on the pier cap section steel bar cage, then the vertically placed pier cap section steel bar cage is transported to one side of the gold bell cover section, and then the vertically placed pier cap section steel bar cage is flipped to be horizontally placed through a flipping frame, then the pier cap section steel bar cage is hoisted to the middle section steel bar cage, and the pier cap section steel bar cage is connected with the middle section steel bar cage.

[0015] Through the technical scheme, the pier cap section steel bars are bound vertically, flipped horizontally, and matched and connected, so that factory-like assembly line construction is realized, the processing and installation quality and the construction efficiency of the pier body steel bars are improved, and the industrialized construction level of the bridge is improved.

[0016] Optionally, in step S9, when the inner form is removed, the inner form is removed from top to bottom.

[0017] In a second aspect, an automatic opening and closing mold system is disclosed.

[0018] An automatic opening and closing mold system is applied to the vertical construction method of the special-shaped prefabricated component, the inner form includes a plurality of inner form plates and support rods arranged in the inner form plates, each group of the support rods includes a pin barrel and two pin shafts, two ends of the pin barrel are respectively threadedly connected with the two pin shafts, and the two pin shafts are respectively connected with different inner form plates.

[0019] Through the technical scheme, the traditional fixed pin shaft and support rod of the inner form are improved into the combination of the rotatable pin barrel and the pin shaft, the inner form plate is removed in its entirety by rotating around the pin barrel, retracting the pin shaft and the inner form plate, and the use efficiency and turnover rate of the form plate are improved by improving the traditional form plate system.

[0020] Optionally, the bottom of the first outer form is provided with an automatic walking system, and the automatic walking system is used to drive the first outer form to move.

[0021] Through the technical scheme, the automatic opening and closing mold plate is realized through the self-walking system, the deformation of the mold plate caused by repeated installation and removal is reduced, and the construction site and labor are saved.

[0022] Optionally, the first outer mold comprises an outer mold plate and a hydraulic system, and a movable end of the hydraulic system is connected with the outer mold plate to drive the outer mold plate to switch between the working state and the demolding state.

[0023] By adopting the technical scheme, the pull rod-free mold plate design is realized through the hydraulic system, material cost is reduced, damage to the mold plate is reduced, structural safety is ensured, and service life and turnover rate of the mold plate are improved.

[0024] To sum up, the present application has at least one of the following beneficial technical effects: 1. The method adopts the fixed pedestal, vertical prefabrication, vertical transportation and vertical hoisting method, combines the segmented construction of the gold bell cover section and the intermediate section and the pier cap section, improves the construction efficiency under the condition of ensuring the construction precision, improves the pier body prefabrication production efficiency and quality, and has the advantages of accurate size, stable quality, short construction period and the like. Compared with the traditional cast-in-place concrete pier, the prefabricated concrete pier can better adapt to various complex terrains and weather conditions, effectively ensuring the stability and safety thereof; 2. By optimizing the reinforcing bar inserting frame, the height connecting frame, the horizontal binding frame and the turning frame, the factory production line construction is realized, the pier body reinforcing bar processing and installation quality and construction efficiency are improved, and the bridge industrialized construction level is improved; 3. The height connecting frame is arranged through the gold bell cover section, which can save cost, reduce construction difficulty, improve the precision of subsequent construction, and ensure the consistency between the intermediate section, the pier cap section and the gold bell cover section; 4. The traditional fixed pin shaft and support rod of the inner mold are improved into the combination of the rotatable pin cylinder and pin shaft, the inner mold plate is retracted with the pin shaft and the inner mold plate when the pin cylinder is rotated as the center during demolding, and the inner mold plate is integrally removed. By improving the traditional mold system, the use efficiency and turnover rate of the mold are improved; 5. The pull rod-free mold plate design is realized through the hydraulic system, material cost is reduced, damage to the mold plate is reduced, structural safety is ensured, and service life and turnover rate of the mold plate are improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a schematic view of a special-shaped prefabricated component in the present application.

[0026] Figure 2 is a structural schematic view of a first inner mold and a second inner mold in the present application.

[0027] Figure 3 is a structural schematic view of a reinforcing bar binding frame in the present application.

[0028] Figure 4 is a structural schematic view of a reinforcing bar inserting frame in the present application.

[0029] Figure 5 is a structural schematic diagram embodying the connecting support in the present application.

[0030] Figure 6 is a structural schematic diagram embodying the connecting support in the present application.

[0031] Figure 7 is a structural schematic diagram embodying the connecting support in the present application.

[0032] Figure 8 is a structural schematic diagram embodying the connecting support in the present application.

[0033] Figure 9 is a structural schematic diagram embodying the connecting support in the present application.

[0034] Figure 10 is a structural schematic diagram embodying the connecting support in the present application.

[0035] Figure 11 is a structural schematic diagram embodying the connecting support in the present application. Figure 2 is a partial enlarged view of A part in the present application.

[0036] In the figure, 11 is a bell jar section; 12 is a middle section; 13 is a pier cap section; 14 is a first inner hole part; 15 is a second inner hole part; 16 is a third inner hole part; 2 is a bottom mold; 3 is a first inner mold; 31 is a second inner mold; 32 is a pin cylinder; 33 is a pin shaft; 4 is a steel bar binding support; 5 is a connecting support; 51 is a bracket; 6 is a first outer mold; 61 is a second outer mold; 62 is an automatic walking system; 63 is a hydraulic system; 7 is a vertical binding support; 8 is a turning-over support; 81 is a hinge point; 82 is a pier cap section steel bar cage; 9 is a reinforcing bar support; 91 is a connecting support. DETAILED DESCRIPTION

[0037] The present application will now be further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams and only show the basic structure of the present application in a schematic manner, and thus only show the components related to the present application.

[0038] In the description of the present application, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the 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 cannot be understood as a limitation on the present application. In addition, the features defined as "first", "second" can be explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more. In the description of the present application, it needs to be explained that, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0039] The application discloses an automatic opening and closing mold system of a special-shaped prefabricated component and a vertical construction method.

[0040] Referring to Figure 1 , the special-shaped prefabricated component comprises, from bottom to top, a bell jar section, an intermediate section and a pier cap section, the cross-sectional area of the bell jar section and the pier cap section is greater than that of the intermediate section, an inner hole is arranged in the special-shaped prefabricated component from top to bottom, the inner hole comprises a first inner hole part, a second inner hole part and a third inner hole part from bottom to top, and the cross-sectional area of the first inner hole part, the second inner hole part and the third inner hole part gradually decreases.

[0041] A vertical construction method of a special-shaped prefabricated component, referring to Figures 2 to 10 , comprising the following steps: S1, installing a bottom mold 2, a bell jar jig and a first inner mold 3.

[0042] S2, install the steel bar binding frame 4 to bind the epoxy steel bars and the embedded bars outside the first inner mold 3 to form the steel cage of the bell section 11. Before binding the epoxy steel bars, first install the positioning steel bars through the bar inserting frame 9, and then bind the epoxy steel bars and the embedded bars on the positioning steel bars; the bar inserting frame 9 is installed on the first inner mold 3 through the connecting support 91, and the bar inserting frame 9 is located above the first inner mold 3. After the epoxy steel bars and the embedded bars are bound, the connecting support 91 is removed, and the bar inserting frame 9 is removed by hoisting. The positioning steel bars are constructed through the bar inserting frame 9, which improves the positioning accuracy and the construction efficiency of the positioning steel bars. Meanwhile, the first inner mold 3 is used to install the bar inserting frame 9, which reduces the construction cost.

[0043] S3, remove the steel bar binding frame 4 and close the first outer mold 6.

[0044] S4, pour the concrete into the bell section 11.

[0045] S5, after the bell section 11 is formed, hoist the connecting frame 5. After the bell section 11 is formed, the first outer mold 6 is removed, then the connecting frame 5 is hoisted and installed on the bell section 11. The connecting frame 5 is connected with a plurality of brackets 51, the plurality of brackets 51 are arranged along the circumference of the bell section 11 and abut against the side wall of the bell section 11, and the side wall of the bell section 11 is provided with a reserved embedded plate connected with the bracket 51. The connecting frame 5 is arranged through the bell section 11, which can save cost, reduce construction difficulty, improve the accuracy of subsequent construction, and ensure the consistency between the intermediate section 12, the pier cap section 13 and the bell section 11.

[0046] S6, hoist the second inner mold 31 and complete the fixation, and install the steel bar binding frame 4 on the connecting frame 5, then bind the steel bars of the intermediate section 12 to form the steel cage of the intermediate section 12.

[0047] S7, construct the steel bars of the pier cap section 13 and the lifting point steel bars, and install the second outer mold 61. When the steel bars of the pier cap section 13 are constructed, the steel bars of the pier cap section 13 are bound through the vertical binding frame 7 on the ground to form the steel cage of the pier cap section 13, and the lifting point steel bars are welded on the steel cage of the pier cap section 13. Then, the vertically placed steel cage of the pier cap section 13 is transported to one side of the bell section 11, and then the vertically placed steel cage of the pier cap section 13 is flipped to be horizontally placed through the flipping frame 8. Then, the steel cage of the pier cap section 13 is hoisted to the steel cage of the intermediate section 12, and the steel cage of the pier cap section 13 is connected with the steel cage of the intermediate section 12. The steel bars of the pier cap section 13 are constructed by using the technologies of vertical binding, horizontal flipping and matching butt joint, which realizes the factory-like pipeline construction, improves the processing and installation quality and the construction efficiency of the pier body steel bars, and improves the industrialized construction level of the bridge. When the steel cage of the pier cap is hoisted, the steel bar binding frame 4 installed on the connecting frame 5 is removed, and the second outer mold 61 is installed on the connecting frame 5 after the installation of the steel cage of the pier cap is completed.

[0048] S8, pouring the intermediate section 12 and the pier cap section 13 concrete.

[0049] S9, after the prefabricated component is formed, the second outer mold 61, the overhead 5 and the inner mold are removed. When the inner mold is removed, it is removed in sequence from top to bottom.

[0050] S10, the formed prefabricated component is vertically lifted and moved to the pier seat, and the prefabricated component is connected with the pier seat.

[0051] The method uses a fixed seat, vertical prefabrication, vertical transportation, and vertical hoisting method, combined with the segmented construction of the optimized bell section 11, the intermediate section 12 and the pier cap section 13, to improve the construction efficiency and the pier body prefabrication production efficiency and quality under the condition of ensuring the construction precision. The prefabricated pier body adopts a factory production method, has the advantages of accurate size, stable quality, short construction period, etc., compared with the traditional site poured concrete pier, the prefabricated concrete pier can better adapt to various complex terrain and weather conditions, effectively guaranteeing its stability and safety.

[0052] The automatic opening and closing mold system refers to Figure 11 The inner mold includes a plurality of inner mold plates and support rods arranged in the inner mold plates. Each group of support rods includes a pin barrel 32 and two pin shafts 33. The two ends of the pin barrel 32 are respectively threadedly connected with the two pin shafts 33, and the two pin shafts 33 are respectively connected with different inner mold plates. The traditional fixed pin shaft 33 and the support rod of the inner mold are improved into a combination of the rotatable pin barrel 32 and the pin shaft 33. When the mold is removed, the pin barrel 32 is rotated as the center, the pin shaft 33 and the inner mold plate are retracted, and the inner mold plate is removed as a whole. By improving the traditional mold plate system, the use efficiency and turnover rate of the mold plate are improved.

[0053] In addition, the bottom of the first outer mold 6 is provided with an automatic walking system 62 for moving the first outer mold 6. The automatic walking system 62 realizes automatic opening and closing of the mold plate, reduces the deformation of the mold plate caused by repeated installation and removal, and saves the construction site and labor. The automatic walking system 62 can be a combination of a motor and a driving wheel. The motor is installed on the first outer mold 6, and the driving wheel is connected with the output end of the motor.

[0054] The first outer mold 6 includes an outer mold plate and a hydraulic system 63. The movable end of the hydraulic system 63 is connected with the outer mold plate to drive the outer mold plate to switch between the working state and the demolding state. The hydraulic system 63 realizes the design of the pull rod-free mold plate, reduces the material cost, reduces the damage to the mold plate, guarantees the structural safety, and improves the service life and turnover rate of the mold plate. The hydraulic system 63 can be a plurality of hydraulic cylinders.

[0055] It should be noted that steel reinforcement holes are provided on the steel reinforcement frame 9 and the horizontal binding frame according to the positions of the steel reinforcements. The hinge joint 81 is provided between the turning frame 8 and the base to drive the turning of the steel reinforcement cage of the pier cap section 13.

[0056] The embodiments of the present application are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, wherein the same parts are denoted by the same reference numerals. Therefore, any equivalent changes made on the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A vertical construction method of a special-shaped prefabricated component, the special-shaped prefabricated component comprising, from bottom to top, a bell section (11), an intermediate section (12) and a pier cap section (13), the cross-sectional area of the bell section (11) and the pier cap section (13) being greater than the cross-sectional area of the intermediate section (12), characterized in that, It comprises the following steps: S1, install the bottom mold (2), the bell-shaped mold and the first inner mold (3); S2, install the steel bar binding frame (4), bind the epoxy steel bar and the embedded bar outside the first inner mold (3) to form the steel reinforcement cage of the bell-shaped section (11); S3, remove the steel bar binding frame (4) and close the first outer mold (6); S4, pour concrete for the bell-shaped section (11); S5, after the bell-shaped section (11) is formed, hoist the connecting frame (5); S6, hoist the second inner mold (31) and complete the fixation, install the steel bar binding frame (4) on the connecting frame (5), and then bind the steel bar of the middle section (12) to form the steel reinforcement cage of the middle section (12); S7, construct the steel bar of the pier cap section (13) and the lifting point, and install the second outer mold (61); S8, pour concrete for the middle section (12) and the pier cap section (13); S9, after the precast component is formed, remove the second outer mold (61), the connecting frame (5) and the inner mold; S10, vertically hoist and move the formed precast component to the pier pedestal, and connect the precast component with the pier pedestal.

2. A method of vertical construction of a shaped precast element according to claim 1, characterized in that: The inner part of the special-shaped precast component is provided with an inner hole from top to bottom, the inner hole comprises a first inner hole part (14), a second inner hole part (15) and a third inner hole part (16) from bottom to top, and the cross-sectional area of the first inner hole part (14), the second inner hole part (15) and the third inner hole part (16) gradually decreases.

3. A method of vertical construction of a shaped precast element according to claim 2, wherein: In step S2, before binding the epoxy steel bar, first install the positioning steel bar through the reinforcing bar support (9), and then bind the epoxy steel bar and the embedded bar on the positioning steel bar; The reinforcing bar support (9) is installed on the first inner mold (3) through the connecting support (91), the reinforcing bar support (9) is located above the first inner mold (3), after the epoxy steel bar and the embedded bar are bound, the connecting support (91) is removed, and the reinforcing bar support (9) is removed by hoisting.

4. A method of vertical construction of a shaped precast element according to claim 3, wherein: In step S5, after the bell-shaped section (11) is formed, remove the first outer mold (6), then hoist the connecting frame (5), and install the connecting frame (5) on the bell-shaped section (11), the connecting frame (5) is connected with a plurality of brackets (51), a plurality of the brackets (51) are arranged along the circumference of the bell-shaped section (11), and each of the brackets (51) abuts against the side wall of the bell-shaped section (11), the side wall of the bell-shaped section (11) is provided with a reserved embedded plate, and the embedded plate is connected with the bracket (51).

5. A method of vertical construction of a shaped precast element according to claim 4, wherein: In step S7, first remove the steel bar binding frame (4) installed on the connecting frame (5), and then install the second outer mold (61) on the connecting frame (5).

6. A method of vertical construction of a shaped precast element according to claim 5, wherein: In step S7, the steel bar of the pier cap section (13) is bound on the ground through the vertical binding frame (7) to form the steel reinforcement cage of the pier cap section (13), the lifting point steel bar is welded on the steel reinforcement cage of the pier cap section (13), then the vertically placed steel reinforcement cage of the pier cap section (13) is transported to one side of the bell-shaped section (11), then the vertically placed steel reinforcement cage of the pier cap section (13) is turned to horizontal position through the turning frame (8), then the steel reinforcement cage of the pier cap section (13) is hoisted to the steel reinforcement cage of the middle section (12), and the steel reinforcement cage of the pier cap section (13) is connected with the steel reinforcement cage of the middle section (12).

7. A method of vertical construction of a shaped precast element according to claim 6, wherein: In step S9, when the inner mold is removed, it is removed from top to bottom.

8. An automatic mold opening and closing system using the vertical construction method of the special-shaped prefabricated component of claim 6, characterized in that: The inner mold comprises a plurality of inner mold plates and support rods arranged in the inner mold plates, each group of the support rods comprises a pin barrel (32) and two pin shafts (33), two ends of the pin barrel (32) are respectively threadedly connected with the two pin shafts (33), and the two pin shafts (33) are respectively connected with different inner mold plates.

9. An automatic mold opening and closing system according to claim 8, characterized in that: The bottom of the first outer mold (6) is provided with an automatic walking system (62), and the automatic walking system (62) is used to drive the first outer mold (6) to move.

10. An automatic mold opening and closing system according to claim 9, characterized in that: The first outer mold (6) comprises an outer mold plate and a hydraulic system (63), and the movable end of the hydraulic system (63) is connected with the outer mold plate, so as to drive the outer mold plate to switch between a working state and a demolding state.

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