Concrete pipe machining and forming die

Abstract

The utility model provides a concrete pipe machining and forming die which comprises a base arranged on the ground, a core die arranged on the base and an outer die arranged on the outer side of the base in a sleeved mode, a reinforcement cage is arranged between the core die and the outer die, and concrete is poured between the outer die and the core die from top to bottom. The base is provided with a grout supplementing mechanism used for conducting grouting and demolding on the bottom of the concrete pipe, an annular groove is formed in the base, the grout supplementing mechanism is arranged in the annular groove in a liftable mode, and the reinforcement cage is arranged on the grout supplementing mechanism. According to the concrete pipe machining and forming mold, the cavity is formed between the concrete pipe and the supporting ring through descending of the supporting ring in the grout supplementing mechanism, the end cover is ejected open through the pressure of mortar in the grouting pipe to conduct grouting on the cavity, and therefore the end of a reinforcement cage is wrapped and blocked, reinforcement exposure of the concrete pipe is avoided, and the machining quality of the concrete pipe is improved. The exposed part of the reinforcement cage is conveniently and quickly blocked, the blocking effect is good, and the quality of the concrete pipe is improved.

Description

Technical Field

[0001] This utility model relates to the field of concrete pipe production technology, specifically to concrete pipe processing and forming molds. Background Technology

[0002] Concrete pipes are pipes made primarily of concrete or reinforced concrete, mainly used for transporting water or other liquids. Based on differences in structural materials, they can be divided into plain concrete pipes, ordinary reinforced concrete pipes, and prestressed concrete pipes. In the industrial production of concrete pipes, the structural design of the molding die directly affects the density, dimensional accuracy, and production efficiency of the finished product. In the production process of ordinary reinforced concrete pipes, the reinforcing cage is placed at the bottom of the mold before concrete is poured. This often results in a thin concrete cover at the bottom of the pipe after demolding, sometimes even exposed. Under the influence of the external environment, the concrete pipe is prone to corrosion, affecting its lifespan. Therefore, exposed reinforcing cages are often manually sealed with mortar after demolding.

[0003] However, manually smoothing mortar to seal exposed rebar areas is not only time-consuming and labor-intensive, but also ineffective at sealing the ends of the rebar cage, thus affecting the product quality of the concrete pipe. This solution addresses this technical problem. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a concrete pipe processing and forming mold. By lowering the support ring in the grouting mechanism, a cavity is formed between the concrete pipe and the support ring. The pressure of mortar in the grouting pipe pushes open the end cap to inject grout into the cavity, thereby wrapping and sealing the end of the reinforcing cage, preventing exposed reinforcement in the concrete pipe. This method provides convenient and quick end processing for the concrete pipe, achieves good sealing effect, and improves the quality of the concrete pipe.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a concrete pipe processing and forming mold, including a base set on the ground, a core mold set on the base, and an outer mold sleeved on the outside of the base. A reinforcing cage is set between the core mold and the outer mold. Concrete is poured from top to bottom between the outer mold and the core mold. A grouting mechanism for grouting and demolding the bottom of the concrete pipe is set on the base. An annular groove is set on the base. The grouting mechanism is vertically and flexibly set in the annular groove. The reinforcing cage is placed on the grouting mechanism.

[0006] The annular groove is arrayed with several cylinders. The grouting mechanism includes a support ring connected to the telescopic ends of the cylinders, a grouting hole on the support ring, a hose with one end connected to the grouting hole, and a grouting pipe connected to the other end of the hose. The grouting pipe passes through the base and is connected to a grouting pump. The reinforcing cage is placed on the top side of the support ring.

[0007] The top side of the base is a slope, the top side of the support ring is a plane, the reinforcing cage is set on the top side of the support ring, and the grouting hole is set through the support ring and does not contact the reinforcing cage.

[0008] The top side of the support ring has an end cap for sealing the grouting hole. The end cap is swung on the support ring via a connecting shaft. A torsion spring is sleeved on the outside of the connecting shaft. One end of the torsion spring is connected to the support ring, and the other end of the torsion spring is connected to the connecting shaft.

[0009] The core mold is equipped with a vibrator for compacting concrete.

[0010] The top side of the core mold is conical.

[0011] The top of the outer mold is provided with lifting lugs.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] (1) The descent of the support ring in the grouting mechanism creates a cavity between the concrete pipe and the support ring. The pressure of the mortar in the grouting pipe opens the end cap to grout the cavity, thereby wrapping and sealing the end of the steel cage, avoiding the exposure of the concrete pipe. The end treatment of the concrete pipe is convenient and quick, the sealing effect is good, and the quality of the concrete pipe is improved.

[0014] (2) After the mortar has cured, the concrete pipe is separated from the base by the rise of the support ring in the grouting mechanism. On the one hand, the concrete pipe slides relative to the core mold and the outer mold, which is conducive to the demolding of the concrete pipe. On the other hand, it is convenient to lift the concrete pipe from the bottom for transportation and demolding. The processing efficiency of the concrete pipe is relatively high.

[0015] (3) By setting the top side of the core mold to be conical, it is easier for the concrete to slide down into the space between the core mold and the outer mold. By setting a vibrator inside the core mold to vibrate the concrete through the core mold, the concrete can be made to wrap the steel cage more tightly, which further improves the processing and forming quality of the concrete pipe. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2This is a schematic diagram of the internal structure of this utility model;

[0018] Figure 3 This is a cross-sectional structural schematic diagram of the present invention;

[0019] Figure 4 This is a utility model Figure 3 A partially enlarged structural diagram of part A;

[0020] Figure 5 This is a utility model Figure 3 A partially enlarged structural diagram of part B;

[0021] Figure 6 This is a schematic diagram of the grouting state of this utility model;

[0022] Figure 7 This is a utility model Figure 6 A partially enlarged structural diagram of section C;

[0023] Figure 8 This is a schematic diagram of the demolding state of this utility model.

[0024] In the figure: 1. Base; 2. Core mold; 3. Outer mold; 4. Reinforcing cage; 5. Grouting mechanism; 51. Support ring; 52. Grouting hole; 53. Hoses; 54. Grouting pipe; 6. Annular groove; 7. Cylinder; 8. End cap; 81. Connecting shaft; 82. Torsion spring; 9. Vibrator; 10. Lifting lug. Detailed Implementation

[0025] To more clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0026] See Figures 1-8 The concrete pipe forming mold includes a base 1 set on the ground, a core mold 2 set on the base 1, and an outer mold 3 sleeved on the outside of the base 1. A reinforcing cage 4 is set between the core mold 2 and the outer mold 3. Concrete is poured from top to bottom between the outer mold 3 and the core mold 2. A grouting mechanism 5 is set on the base 1 for grouting the bottom of the concrete pipe and demolding. An annular groove 6 is set on the base 1. The grouting mechanism 5 is set in the annular groove 6 in a height-adjustable manner. The reinforcing cage 4 is placed on the grouting mechanism 5.

[0027] Several cylinders 7 are arranged in an array inside the annular groove 6. The grouting mechanism 5 includes a support ring 51 connected to the telescopic ends of the cylinders 7, a grouting hole 52 set on the support ring 51, a hose 53 with one end connected to the grouting hole 52, and a grouting pipe 54 connected to the other end of the hose 53. The grouting pipe 54 passes through the base 1 and is connected to a grouting pump. The reinforcing cage 4 is placed on the top side of the support ring 51. Specifically, the grouting pipe 54 passes through the bottom side of the base 1 and is pre-buried underground and connected to the grouting pump. A sealing structure is provided between the grouting pipe 54 and the base 1 to ensure no grout leakage.

[0028] The top side of the base 1 is a slope, the top side of the support ring 51 is a plane, the reinforcing cage 4 is set on the top side of the support ring 51, and the grouting hole 52 is set through the support ring 51 and does not contact the reinforcing cage 4.

[0029] The top side of the support ring 51 is provided with an end cap 8 for sealing the grouting hole 52. The end cap 8 is swayed on the support ring 51 via a connecting shaft 81. A torsion spring 82 is sleeved on the outside of the connecting shaft 81. One end of the torsion spring 82 is connected to the support ring 51, and the other end of the torsion spring 82 is connected to the connecting shaft 81.

[0030] The core mold 2 is equipped with a vibrator 9 for compacting concrete.

[0031] The top side of core mold 2 is conical.

[0032] The top of the outer mold 3 is provided with a lifting lug 10.

[0033] The specific working process of this utility model:

[0034] In use, first apply release agent to the outer side of the core mold 2, the base 1, and the top side of the support ring 51. Then, place the reinforcing cage 4 on the outer side of the core mold 2. Guided by the inclined surface of the base 1, the bottom end of the reinforcing cage 4 is stably positioned on the plane of the support ring 51. The inclined surface of the base 1 also helps to prevent the reinforcing cage from tilting. The inclined surface of the base 1 then guides the reinforcing cage 4 onto the support ring 51. Next, place the outer mold 3, coated with release agent, onto the base 1 to complete the mold installation. Finally, start the cylinder 7, which lifts the support ring 51 to the desired position. Figure 4 As shown, the top side of the support ring 51 protrudes from the top side of the base 1, lifting the steel cage 4.

[0035] The concrete is poured from top to bottom between the outer mold 3 and the core mold 2. Guided by the conical surface at the top of the core mold 2, it falls around the reinforcing cage 4. The concrete encloses the reinforcing cage 4. The vibrator 9 is then started. Under the vibration action of the vibrator 9, the concrete is compacted until the entire concrete pipe is formed.

[0036] When the concrete pipe initially hardens, the starting cylinder 7 drives the support ring 51 to descend. At this time, the concrete surrounding the reinforcing cage 4 detaches from the support ring 51, forming a hollow cavity between the support ring 51 and the concrete. The grouting pump is then started, injecting mortar into the hose 53 through the grouting pipe 54. After passing through the hose 53 and the grouting hole 52, the grouting pressure pushes open the end cap 8 above the grouting hole 52. Specifically, the pre-tightening torque of the torsion spring 82 is 0.5-1.5 N·m. The end cap 8 opens when the grouting pressure of the grouting hole 52 is ≥0.3 MPa. After the mortar overcomes the torque of the torsion spring 82 and pushes open the end cap 8, it fills the hollow cavity, wrapping the end of the reinforcing cage 4 until the entire cavity is filled. The grouting pressure increases, the grouting pump is stopped, and the end cap 8 resets under the action of the torsion spring 82, sealing the grouting hole 52, thus completing the grouting of the cavity.

[0037] After the grouting has cured, the cylinder 7 is activated to lift the concrete pipe off the base 1 via the support ring 51, causing the inner and outer sides of the concrete pipe to slide against the core mold 2 and the outer mold 3 respectively, so as to facilitate the demolding of the concrete pipe. Then, the outer mold 3 is lifted by the lifting lugs of the outer mold 3 to complete the demolding of the outer mold 3. Then, the fork arm of the forklift is inserted between the base 1 and the concrete pipe, and the fork arm is raised to lift the concrete pipe off the core mold 2 to complete the processing of the concrete pipe.

[0038] The descent of the support ring 51 in the grouting mechanism 5 creates a cavity between the concrete pipe and the support ring 51. The pressure of the mortar in the grouting pipe 54 pushes open the end cap 8 to inject grout into the cavity, thereby wrapping and sealing the end of the reinforcing cage 4. This prevents the exposed reinforcing bars in the concrete pipe from being exposed. The sealing treatment of the exposed part of the reinforcing cage 4 is convenient and quick, with a good sealing effect, which improves the quality of the concrete pipe.

[0039] After the mortar has cured, the concrete pipe is separated from the base 1 by the rise of the support ring 51 in the grouting mechanism 5. On the one hand, this causes relative sliding between the concrete pipe and the core mold 2 and the outer mold 3, which is conducive to the demolding of the concrete pipe. On the other hand, it is convenient to lift the concrete pipe from the bottom for transportation and demolding, resulting in high processing efficiency of the concrete pipe.

[0040] By setting the top side of the core mold 2 to be conical, it is easier for the concrete to slide down into the space between the core mold 2 and the outer mold 3. The vibrator 9 installed inside the core mold 2 vibrates the concrete through the core mold 2, which further makes the concrete wrap the steel cage 4 more tightly and further improves the processing and forming quality of the concrete pipe.

[0041] The technical features of this utility model not described can be implemented by or by using existing technology, and will not be repeated here. Of course, the above description is not a limitation of this utility model, and this utility model is not limited to the examples above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model should also be within the protection scope of this utility model.

Claims

1. A concrete pipe forming mold, characterized in that, The system includes a base (1) set on the ground, a core mold (2) set on the base (1), and an outer mold (3) sleeved on the outside of the base (1). A steel cage (4) is provided between the core mold (2) and the outer mold (3). Concrete is poured from top to bottom between the outer mold (3) and the core mold (2). A grouting mechanism (5) for grouting and demolding the bottom of the concrete pipe is provided on the base (1). An annular groove (6) is provided on the base (1). The grouting mechanism (5) is vertically and vertically arranged in the annular groove (6). The steel cage (4) is placed on the grouting mechanism (5).

2. The concrete pipe processing and forming mold according to claim 1, characterized in that, The annular groove (6) is provided with a plurality of cylinders (7) arranged in an array. The grouting mechanism (5) includes a support ring (51) connected to the telescopic ends of the plurality of cylinders (7), a grouting hole (52) provided on the support ring (51), a hose (53) connected at one end to the grouting hole (52), and a grouting pipe (54) connected at the other end of the hose (53). The grouting pipe (54) passes through the base (1) and is connected to a grouting pump. The steel cage (4) is placed on the top side of the support ring (51).

3. The concrete pipe processing and forming mold according to claim 2, characterized in that, The top side of the base (1) is an inclined surface, the top side of the support ring (51) is a flat surface, the steel cage (4) is set on the top side of the support ring (51), and the grouting hole (52) is set through the support ring (51) and does not contact the steel cage (4).

4. The concrete pipe processing and forming mold according to claim 3, characterized in that, The top side of the support ring (51) is provided with an end cap (8) for sealing the grouting hole (52). The end cap (8) is swayed on the support ring (51) via a connecting shaft (81). A torsion spring (82) is sleeved on the outside of the connecting shaft (81). One end of the torsion spring (82) is connected to the support ring (51), and the other end of the torsion spring (82) is connected to the connecting shaft (81).

5. The concrete pipe processing and forming mold according to claim 4, characterized in that, The core mold (2) is equipped with a vibrator (9) for vibrating concrete.

6. The concrete pipe processing and forming mold according to claim 5, characterized in that, The top side of the core mold (2) is conical.

7. The concrete pipe processing and forming mold according to claim 5, characterized in that, The top of the outer mold (3) is provided with a lifting lug (10).

Images