Concrete pipe casting core-pulling production line

Abstract

The application discloses a concrete pipe pouring shrink core type demolding production line and belongs to the technical field of concrete product processing. The production line comprises a movable hanger. A pouring base is arranged below the movable hanger. A demolding base is arranged at the rear side of the pouring base. An inner mold assembly is arranged at the top of the pouring base. The inner mold assembly comprises main mold plates arranged at the front side and the rear side of the top of the pouring base. Side mold plates are arranged at the two ends of the opposite sides of the two main mold plates. Rotating parts are arranged between the side mold plates and the main mold plates. The movable hanger, the demolding base, the reverse stopping assembly and the demolding assembly are used in cooperation to horizontally open and close the outer mold plate, realize mold closing and demolding, quickly clamp the inner mold under the cooperation of the movable hanger, the inner mold assembly and the inner supporting assembly, realize shrinkage demolding, and thus the purposes of reducing product surface damage, automatically separating and demolding and stably and firmly assembling the mold can be achieved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of concrete product processing, in particular to a concrete pipeline pouring core type demolding production line. BACKGROUND

[0002] Concrete pipeline is an important structure for urban underground infrastructure, usually made of concrete material, and has the advantages of high strength, good durability, strong anti-permeability, relatively simple construction, etc., and can work stably for a long time under different geological and environmental conditions, effectively ensuring the safe operation and maintenance management of urban underground pipeline system.

[0003] In the demolding process, the vertical lifting demolding method is adopted, and the mold and the product surface are in close contact, which may cause the mold to damage the product surface, affecting the appearance and quality of the pipeline, and in the demolding and assembly process of large pipelines, the related lock disassembly steps are more, the labor intensity is large and the efficiency is low, therefore, it is necessary to provide a concrete pipeline pouring core type demolding production line, which adopts an inner core type, first separates the mold and the product, avoids damage to the product during hoisting the mold, and is provided with an automatic mold closing and opening structure, reduces labor input, and speeds up the production process. SUMMARY

[0004] The purpose of the present application is to provide a concrete pipeline pouring core type demolding production line, which adopts an inner core type, first separates the mold and the product, avoids damage to the product during hoisting the mold, and is provided with an automatic mold closing and opening structure, reduces labor input, and speeds up the production process, to solve the above technical problems.

[0005] The technical scheme for solving the above technical problems of the present application is as follows: a concrete pipeline pouring core type demolding production line, the production line comprising a movable hanger: a pouring base is arranged below the movable hanger, a demolding base is arranged at the rear side of the pouring base, an inner mold assembly is arranged at the top of the pouring base, the inner mold assembly comprises main mold plates arranged at the front side and the rear side of the top of the pouring base, two ends of the opposite side of each of the two main mold plates are provided with side mold plates, a rotating piece is arranged between the side mold plate and the main mold plate, one end of the rotating piece is rotationally connected with the main mold plate, the other end of the rotating piece is rotationally connected with the side mold plate, a connecting seat is arranged at the top between the two main mold plates, connecting rods are rotationally connected with the two sides of the connecting seat, an inner support assembly is arranged between the two side mold plates, outer mold plates are arranged at the two sides of the top of the pouring base, the bottom of each of the outer mold plates is fixedly connected with a slidable sliding seat, reverse stopping assemblies are arranged at the two ends of the front side and the rear side of the top of the pouring base, each of the reverse stopping assemblies comprises a rectangular groove arranged at the four corners of the top of the pouring base, a fixed shell is fixedly connected in the inner cavity of the rectangular groove, a sliding frame is slidably connected in the inner cavity of the fixed shell, a reverse stopping clamping block is slidably connected on the side of the fixed shell away from the sliding frame, reverse stopping racks are fixedly connected with the front side and the rear side of the bottom of the sliding seat, the reverse stopping clamping block and the reverse stopping rack are in engagement, a direction changing gear is rotationally connected in the inner cavity of the fixed shell, synchronous racks are fixedly connected with the opposite side of the sliding frame and the reverse stopping clamping block, the direction changing gear and the synchronous rack are in engagement, a second spring is welded at the top of the sliding frame, the top end of the second spring is welded with the fixed shell, and a demolding assembly is arranged at the top of the demolding base.

[0006] Preferably, the inner support assembly comprises a first inner support square column and a second inner support square column, the opposite sides of the first inner support square column and the second inner support square column are respectively rotationally connected with the two side mold plates, the surface of the second inner support square column is rotationally connected with a limiting clamping piece, the front side and the rear side of the first inner support square column are fixedly connected with fixed pins, and the limiting clamping piece is clamped on the surface of the fixed pin.

[0007] Preferably, a tension spring is welded at the right end of the front side and the rear side of the second inner support square column, the left end of the tension spring is welded with the limiting clamping piece, a lifting chain is fixedly connected with the top of the limiting clamping piece, and the top end of the lifting chain is fixedly connected with the bottom end of the lifting rod.

[0008] Preferably, a blocking pin is fixedly connected with the front side and the rear side of the second inner support square column, and the surface of the blocking pin is tightly attached to the right side of the limiting clamping piece.

[0009] Preferably, a lifting rod is arranged through the top of the connecting seat, a first spring is sleeved on the surface of the lifting rod, and the top end and the bottom end of the first spring are respectively welded with the connecting seat and the lifting rod.

[0010] Preferably, the demolding assembly comprises rectangular sliding grooves opened on both sides of the demolding base, the inner cavities of the rectangular sliding grooves are slidably connected with sliding seats, the inner cavity of the rectangular sliding groove on the left side is rotatably connected with a bidirectional threaded rod through a bearing, the right end of the bidirectional threaded rod penetrates to the right side of the demolding base, a stepping motor is fixedly installed on the right side of the demolding base, and the right end of the bidirectional threaded rod is fixedly connected with the output shaft of the stepping motor.

[0011] Preferably, the top of the sliding seat is fixedly connected with a butt joint seat, the bottom of the sliding seat is fixedly connected with a butt joint, arc-shaped through holes matched with the butt joint seat are formed on both sides of the bottom of the pouring base, and the bottom end of the butt joint penetrates through the arc-shaped through hole and is inserted into the inner cavity of the butt joint seat.

[0012] Preferably, the front end and the rear end on both sides of the top of the demolding base are fixedly connected with extrusion protrusions, and the extrusion protrusions are clamped in the inner cavities of the rectangular recesses.

[0013] Preferably, two groups of quick locks are installed on the front side and the rear side of the two outer mold plates.

[0014] A working method of a concrete pipeline pouring core-pulling demolding production line, and the method steps are as follows:

[0015] Step one, in the process of demolding, the pouring base and the outer mold plate are integrally lifted by moving the lifting frame, the pouring base is moved to the top of the demolding base, the extrusion protrusions are clamped in the inner cavities of the rectangular recesses, the butt joint seat is inserted into the inner cavity of the arc-shaped through hole and is sleeved on the surface of the butt joint, at this time, the sliding frame is slid upward under the extrusion of the extrusion protrusions, and under the cooperation of the synchronous rack and the direction-changing gear, the reverse check block is slid downward, the reverse check block is disengaged from the reverse rack, and the second spring is compressed, at this time, the sliding seat is unlocked, then the user opens the quick lock, and the two outer mold plates are unlocked.

[0016] Step two, then the stepping motor is started and drives the bidirectional threaded rod to rotate, the bidirectional threaded rod threadedly pushes the two sliding seats through the threads on the surface of the bidirectional threaded rod during rotation, so that the two sliding seats move away from each other, and the sliding seats pull the two sliding seats during movement through the cooperation of the butt joint seat and the butt joint, so that the sliding seat drives the outer mold plate to slide on the top of the moving lifting frame, thereby opening the two outer mold plates and separating from the surface of the pipeline.

[0017] Step three, then hoist the boom by moving the hanger, make the boom slide upward, the boom pulls the limiting clamp during the upward sliding, make the limiting clamp rotate, the limiting clamp is separated from the fixed pin during the rotation, meanwhile stretch the tension spring, at this time the first inner support square column and the second inner support square column are unlocked, under the cooperation of the boom and the chain, the first inner support square column and the second inner support square column are separated, meanwhile the first spring is compressed to the limit, the continuously rising boom lifts the connecting seat, then make the two connecting rods generate tension to the two side mold plates, make the two side mold plates move towards each other, under the linkage of the rotating piece, the two main mold plates move towards each other at the same time, then make the rotating piece and the main mold plate shrink, the inner wall of the pipeline is separated from the surface of the main mold plate and the side mold plate, finally the main mold plate and the side mold plate are lifted as a whole and taken out, the demolding is completed.

[0018] The beneficial effects of the present application are: the present application realizes the closing and opening of the outer mold plate by the cooperation of the moving hanger, the demolding base, the reverse stopping assembly and the demolding assembly, realizes the closing and demolding of the inner mold under the cooperation of the moving hanger, the inner mold assembly and the inner support assembly, reduces the surface damage of the product, realizes the automatic separation and demolding, and realizes the stable and reliable purpose of the mold assembly. BRIEF DESCRIPTION OF DRAWINGS

[0019] The above and / or other aspects of the present application will become more apparent and more readily appreciated through consideration of the following detailed description, taken in conjunction with the accompanying drawings, in which:

[0020] Figure 1 It is a top view schematic diagram of one embodiment of the present application;

[0021] Figure 2 It is a three-dimensional schematic diagram of the pouring base, the outer mold plate and the inner mold assembly of one embodiment of the present application;

[0022] Figure 3 It is a front view schematic diagram of the pouring base, the demolding base, the inner support assembly, the inner mold assembly and the outer mold plate of one embodiment of the present application;

[0023] Figure 4 It is a three-dimensional schematic diagram of one embodiment of the present application Figure 3 It is a local enlarged view of point A in the figure;

[0024] Figure 5 It is a three-dimensional exploded view of the pouring base, the sliding seat and the reverse stopping assembly of one embodiment of the present application;

[0025] Figure 6 It is a three-dimensional exploded view of the inner mold assembly and the inner support assembly of one embodiment of the present application;

[0026] Figure 7For an embodiment of the present application Figure 6 A local enlarged view of point B in FIG. 4;

[0027] Figure 8 For an embodiment of the present application Figure 6 A local enlarged view of point C in FIG. 5;

[0028] Figure 9 A perspective view of a dismounting base and a dismounting assembly for an embodiment of the present application.

[0029] In the drawings, the components represented by the same reference numerals are as follows:

[0030] 1, a mobile hanger, 2, a pouring base, 3, a dismounting base, 4, an inner mold assembly, 41, a main mold plate, 42, a side mold plate, 43, a rotating piece, 44, a connecting seat, 45, a connecting rod, 46, a hanger rod, 47, a first spring, 5, an inner support assembly, 51, a first inner support square column, 52, a second inner support square column, 53, a limiting clamping piece, 54, a fixed pin, 55, a tension spring, 56, a hanger chain, 57, a blocking pin, 6, an outer mold plate, 7, a sliding seat, 8, a reverse stopping assembly, 81, a rectangular groove, 82, a fixed shell, 83, a sliding frame, 84, a reverse stopping clamping block, 85, a reverse stopping rack, 86, a direction changing gear, 87, a synchronous rack, 88, a second spring, 9, a dismounting assembly, 91, a rectangular sliding groove, 92, a sliding seat, 93, a bidirectional threaded rod, 94, a stepping motor, 95, a butt joint seat, 96, a butt joint, 97, an extrusion protrusion, 98, an arc-shaped through hole, 10, a quick lock. DETAILED DESCRIPTION

[0031] Hereinafter, an embodiment of a concrete pipe pouring core-pulling demolding production line of the present application will be described with reference to the accompanying drawings.

[0032] The embodiments described herein are specific, concrete embodiments of the present application for the purpose of illustrating the inventive concept, and are explanatory and exemplary only, and are not to be construed as limiting the scope of the embodiments of the present application and the scope of the present application. In addition to the embodiments described herein, other technical solutions that are obvious to those skilled in the art based on the disclosure of the claims and the description of the present application can also be adopted, which include technical solutions that make any obvious substitutions and modifications to the embodiments described herein.

[0033] The drawings of the present specification are schematic drawings that assist in explaining the inventive concept of the present application, and schematically represent the shapes of the parts and their mutual relationship. Please note that, in order to clearly show the structure of each component of the embodiments of the present application, the drawings are not drawn according to the same scale. The same reference numerals are used to represent the same parts.

[0034] Embodiment one: Figures 1-9The concrete pipe pouring core type demolding production line showing one embodiment of the application comprises a movable hanger 1, a pouring base 2 is arranged below the movable hanger 1, a demolding base 3 is arranged at the rear side of the pouring base 2, an inner mold assembly 4 is arranged at the top of the pouring base 2, the inner mold assembly 4 comprises main mold plates 41 arranged at the front side and the rear side of the top of the pouring base 2, side mold plates 42 are arranged at the two ends of the opposite sides of the two main mold plates 41, rotating members 43 are arranged between the side mold plates 42 and the main mold plates 41, one end of the rotating member 43 is rotationally connected with the main mold plate 41, the other end of the rotating member 43 is rotationally connected with the side mold plate 42, a connecting seat 44 is arranged at the top between the two main mold plates 41, a hanger rod 46 is arranged through the top of the connecting seat 44, a first spring 47 is sleeved on the surface of the hanger rod 46, the top end and the bottom end of the first spring 47 are welded with the connecting seat 44 and the hanger rod 46 respectively, through the cooperation of the hanger rod 46 and the first spring 47, transmission interval is realized, so that the hanger rod 46 can drive the limiting clamping member 53 to rotate first through the lifting chain 56, then the two side mold plates 42 are pulled through the connecting rod 45, so as to realize the purpose of automatic unlocking, the connecting rod 45 is rotationally connected with the two sides of the connecting seat 44, an inner support assembly 5 is arranged between the two side mold plates 42, outer mold plates 6 are arranged at the two sides of the top of the pouring base 2, two groups of quick locks 10 are arranged at the front side and the rear side of the two outer mold plates 6, a slidable sliding seat 7 is fixedly connected with the bottom of the outer mold plate 6, reverse stopping assemblies 8 are arranged at the two ends of the top front side and the top rear side of the pouring base 2, the reverse stopping assembly 8 comprises a rectangular groove 81 opened at the four corners of the top of the pouring base 2, a fixed shell 82 is fixedly connected in the inner cavity of the rectangular groove 81, a sliding frame 83 is slidably connected in the inner cavity of the fixed shell 82, a reverse stopping clamping block 84 is slidably connected on the side of the fixed shell 82 away from the sliding frame 83, reverse stopping racks 85 are fixedly connected with the front side and the rear side of the bottom of the sliding seat 7, the reverse stopping clamping block 84 and the reverse stopping rack 85 are engaged, a direction changing gear 86 is rotationally connected in the inner cavity of the fixed shell 82, synchronous racks 87 are fixedly connected with the opposite sides of the sliding frame 83 and the reverse stopping clamping block 84, the direction changing gear 86 and the synchronous rack 87 are engaged, a second spring 88 is welded on the top of the sliding frame 83, the top end of the second spring 88 is welded with the fixed shell 82, a demolding assembly 9 is arranged at the top of the demolding base 3.

[0035] The embodiment two is basically same with the embodiment one, and further has that the inner support assembly 5 includes a first inner support square column 51 and a second inner support square column 52, the first inner support square column 51 and the second inner support square column 52 are rotationally connected with the two side mold plates 42 at the opposite sides respectively, the surface of the second inner support square column 52 is rotationally connected with a limiting clamp 53, the front side and the back side of the first inner support square column 51 are fixedly connected with fixed pins 54, the limiting clamp 53 is clamped on the surface of the fixed pin 54, the right end of the front side and the back side of the second inner support square column 52 is welded with a tension spring 55, the left end of the tension spring 55 is welded with the limiting clamp 53, the top of the limiting clamp 53 is fixedly connected with a lifting chain 56, the top end of the lifting chain 56 is fixedly connected with the bottom end of the lifting rod 46, the front side and the back side of the second inner support square column 52 are fixedly connected with stop pins 57, the surface of the stop pin 57 is closely combined with the right side of the limiting clamp 53, through the setting of the inner support assembly 5, the cooperation of the limiting clamp 53, the tension spring 55 and the fixed pin 54 plays a role of locking and limiting between the first inner support square column 51 and the second inner support square column 52, so that the first inner support square column 51 and the second inner support square column 52 remain horizontal, and further makes the two side mold plates 42 generate transverse extrusion force, so as to prevent the displacement of the two main mold plates 41 and the two side mold plates 42 under the extrusion of the concrete during the concrete pouring process.

[0036] The embodiment three is basically same with the embodiment one, and further has that the mold dismounting assembly 9 includes rectangular sliding grooves 91 opened at the two sides of the mold dismounting base 3, sliding seats 92 are slidingly connected in the inner cavities of the rectangular sliding grooves 91, a bidirectional screw rod 93 is rotationally connected in the inner cavity of the left rectangular sliding groove 91 through a bearing, the right end of the bidirectional screw rod 93 penetrates to the right side of the mold dismounting base 3, a stepping motor 94 is fixedly installed at the right side of the mold dismounting base 3, the right end of the bidirectional screw rod 93 is fixedly connected with the output shaft of the stepping motor 94, a butt joint seat 95 is fixedly connected at the top of the sliding seat 92, a butt joint 96 is fixedly connected at the bottom of the sliding seat 7, arc-shaped through holes 98 are opened at the two sides of the bottom of the pouring base 2 and are matched with the butt joint seat 95, the bottom end of the butt joint 96 penetrates the arc-shaped through hole 98 and is inserted in the inner cavity of the butt joint seat 95, extrusion protrusions 97 are fixedly connected at the front end and the back end of the two sides of the top of the mold dismounting base 3 and are clamped in the inner cavities of the rectangular grooves 81, through the setting of the mold dismounting assembly 9, the cooperation of the stepping motor 94, the bidirectional screw rod 93 and the sliding seat 92 plays a role of advancing towards each other and away from each other to the two butt joint seats 95, so that the cooperation of the butt joint seat 95 and the butt joint 96 can simultaneously drive the two sliding seats 7 to move towards each other or away from each other, and the convenience and stability of the stripping of the outer mold plate 6 are improved.

[0037] A working method of a concrete pipeline pouring core type stripping production line, and the method steps are as follows:

[0038] Step one, in the process of demolding, the pouring base 2 and the outer formwork 6 are lifted as a whole by moving the lifting frame 1, the pouring base 2 is moved to the top of the demolding base 3, the extrusion block 97 is clamped in the inner cavity of the rectangular groove 81, the abutment seat 95 is inserted into the inner cavity of the arc-shaped through hole 98 and is sleeved on the surface of the abutment head 96, at this time the sliding frame 83 slides upward under the extrusion of the extrusion block 97, and under the cooperation of the synchronous rack 87 and the change gear 86, the reverse stop block 84 slides downward, the reverse stop block 84 is disengaged from the reverse stop rack 85, and the second spring 88 is compressed, at this time the sliding seat 7 is unlocked, then the user opens the quick lock 10, and the two outer formworks 6 are unlocked;

[0039] Step two, then the stepper motor 94 is started and drives the bidirectional threaded rod 93 to rotate, the bidirectional threaded rod 93 threadedly pushes the two sliding seats 92 through the threads on the surface thereof during rotation, the two sliding seats 92 are pulled to move away from each other, the sliding seat 92 pulls the sliding seat 7 to slide on the top of the moving lifting frame 1 through the cooperation of the abutment seat 95 and the abutment head 96, and then the two outer formworks 6 are opened and separated from the surface of the pipeline;

[0040] Step three, then the lifting frame 1 lifts the lifting rod 46, the lifting rod 46 slides upward, the lifting rod 46 pulls the limiting clamping piece 53 to rotate through the lifting chain 56 during upward sliding, the limiting clamping piece 53 is disengaged from the fixed pin 54 during rotation, and the tension spring 55 is stretched, at this time the first inner support square column 51 and the second inner support square column 52 are unlocked, the first inner support square column 51 and the second inner support square column 52 are disengaged under the cooperation of the lifting rod 46 and the lifting chain 56, and the first spring 47 is compressed to the limit, the lifting rod 46 lifts the connecting seat 44, and then the two connecting rods 45 pull the two side formworks 42 to move toward each other, the two main formworks 41 move toward each other under the linkage of the rotating piece 43, and then the rotating piece 43 and the main formwork 41 are retracted, the inner wall of the pipeline is separated from the surface of the main formwork 41 and the side formwork 42, finally the main formwork 41 and the side formwork 42 are lifted and taken out as a whole, and the demolding is completed.

[0041] In summary, the concrete pipeline pouring and retracting core demolding production line realizes horizontal opening and closing of the outer formwork 6 through the cooperation of the moving lifting frame 1, the demolding base 3, the reverse stop assembly 8 and the demolding assembly 9, realizes clamping of the inner formwork through the cooperation of the moving lifting frame 1, the inner formwork assembly 4 and the inner support assembly 5, realizes diameter reduction and demolding, and achieves the purposes of reducing surface damage of products, automatic separation and demolding and stable and reliable mold assembly.

Claims

1. A concrete pipe jacking core type demolding production line, characterized in that, The production line comprises a mobile suspension bracket (1), a pouring base (2 is arranged below the mobile suspension bracket (1), a form stripping base (3 is arranged at the rear side of the pouring base (2), an inner mold assembly (4 is arranged at the top of the pouring base (2), the inner mold assembly (4 comprises main mold plates (41 located at the top front side and the top rear side of the pouring base (2), side mold plates (42 are arranged at the two ends of the opposite sides of the two main mold plates (41), rotating members (43 are arranged between the side mold plates (42 and the main mold plates (41), one end of the rotating member (43 is rotationally connected with the main mold plate (41), the other end of the rotating member (43 is rotationally connected with the side mold plate (42), a connecting seat (44 is arranged at the top between the two main mold plates (41, connecting rods (45 are rotationally connected on the two sides of the connecting seat (44), reverse stopping assemblies (8 are arranged at the top front side and the top rear side of the pouring base (2), an inner supporting assembly (5 is arranged between the two side mold plates (42, outer mold plates (6 are arranged at the two sides of the top of the pouring base (2), a suspender (46 is arranged through the top of the connecting seat (44, a first spring (47 is sleeved on the surface of the suspender (46, the top end and the bottom end of the first spring (47 are welded with the connecting seat (44 and the suspender (46 respectively, the reverse stopping assembly (8 comprises rectangular recesses (81 which are arranged at the four corners of the top of the pouring base (2), the inner cavities of the rectangular recesses (81 are fixedly connected with fixed shells (82, the inner cavities of the fixed shells (82 are slidably connected with sliding frames (83, the side, away from the sliding frame (83, of the inner cavity of the fixed shell (82 is slidably connected with a reverse stopping clamping block (84, the bottom of the outer mold plate (6 is fixedly connected with a slidable sliding seat (7, the front side and the rear side of the bottom of the sliding seat (7 are fixedly connected with reverse stopping racks (85, the reverse stopping clamping block (84 and the reverse stopping rack (85 are engaged with each other, the inner cavity of the fixed shell (82 is rotationally connected with a direction changing gear (86, the side, opposite to the sliding frame (83, of the sliding frame (83 and the reverse stopping clamping block (84 is fixedly connected with a synchronous rack (87, the direction changing gear (86 and the synchronous rack (87 are engaged with each other, the top of the sliding frame (83 is welded with a second spring (88, the top end of the second spring (88 is welded with the fixed shell (82, the top of the form stripping base (3 is provided with a form stripping assembly (9, the inner supporting assembly (5 comprises a first inner supporting square column (51) and a second inner supporting square column (52, the sides, opposite to each other, of the first inner supporting square column (51) and the second inner supporting square column (52 are rotationally connected with the two side mold plates (42, the surface of the second inner supporting square column (52 is rotationally connected with a limiting clamping member (53, the front side and the rear side of the first inner supporting square column (51 are fixedly connected with fixed pins (54, the limiting clamping member (53 is clamped on the surface of the fixed pin (54,The right end of the front side and the rear side of the second inner support square column (52) is welded with a tension spring (55), the left end of the tension spring (55) is welded with a limiting clamp (53), the top of the limiting clamp (53) is fixedly connected with a lifting chain (56), the top end of the lifting chain (56) is fixedly connected with the bottom end of the lifting rod (46), the front side and the rear side of the second inner support square column (52) are fixedly connected with a stop pin (57), and the surface of the stop pin (57) is closely attached to the right side of the limiting clamp (53).

2. A concrete pipe casting core- withdrawal production line according to claim 1, characterized in that, The form stripping assembly (9) comprises rectangular sliding grooves (91) formed on both sides of the form stripping base (3), the inner cavities of the rectangular sliding grooves (91) are slidably connected with sliding seats (92), and the inner cavity of the rectangular sliding groove (91) on the left side is rotatably connected with a bidirectional threaded rod (93) through a bearing.

3. A concrete pipe casting core- withdrawal production line according to claim 2, characterized in that, The right end of the bidirectional threaded rod (93) penetrates to the right side of the form stripping base (3), a stepping motor (94) is fixedly installed on the right side of the form stripping base (3), and the right end of the bidirectional threaded rod (93) is fixedly connected with the output shaft of the stepping motor (94).

4. A concrete pipe casting core- withdrawal production line according to claim 3, characterized in that, The top of the sliding seat (92) is fixedly connected with a butt joint seat (95), the bottom of the sliding seat (7) is fixedly connected with a butt joint (96), arc-shaped through holes (98) matched with the butt joint seat (95) are formed on both sides of the bottom of the pouring base (2), and the bottom end of the butt joint (96) penetrates through the arc-shaped through hole (98) and is inserted into the inner cavity of the butt joint seat (95).

5. A concrete pipe casting core- withdrawal production line according to claim 4, characterized in that, The front end and the rear end of the top of the form stripping base (3) are fixedly connected with extrusion lugs (97), and the extrusion lugs (97) are clamped in the inner cavities of the rectangular grooves (81).

6. A concrete pipe casting core- withdrawal production line according to claim 5, characterized in that, The front side and the rear side of each of the two outer formwork plates (6) are provided with two groups of quick locks (10).

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