A concrete precast forming mold

Abstract

The application relates to the technical field of prefabricated component preparation, and particularly discloses a concrete prefabricated part forming die; the die comprises a top die box and a bottom die base which are mutually sleeved, the top end of the top die box is provided with a pouring hopper, the lower end of the pouring hopper which extends into the inner cavity of the top die box is connected with a discharging cylinder, a rotating rod with blades is rotationally arranged in the discharging cylinder, the end of the rotating rod which extends out of the discharging cylinder is connected with an incomplete gear, a rack which is meshed with the incomplete gear is arranged in the top die box, the rack is connected with the top die box through a spring, a vibrating piece is arranged in the top die box, and impact heads are arranged at the two ends of the rack; the concrete prefabricated part forming die can convert the gravitational potential energy of the falling concrete into kinetic energy for realizing the vibration of the top die box, the whole forming die can quickly and uniformly level the concrete poured in the forming cavity without the help of a vibrating motor, the structure design is ingenious, and the use effect of the prefabricated part pouring and forming is excellent.

Description

Technical Field

[0001] This invention relates to the field of precast component preparation technology, and specifically discloses a precast concrete component molding mold. Background Technology

[0002] Precast concrete components refer to concrete products manufactured in factories using standardized and mechanized methods. The preparation of precast concrete components requires the use of molds for casting. Currently, existing precast component molds require placing the mold on a vibrating table or installing a vibrating motor on the side of the mold during the casting process. This causes the mold itself to vibrate at high frequency during the pouring process, allowing the poured concrete to be quickly and evenly distributed within the mold.

[0003] For example, the invention patent with application number CN2021104682739 discloses a molding mold for precast reinforced concrete, including a bottom mold, an upper mold, side molds, end molds, and a fixing frame. Two parallel side molds are installed on the upper surface of the bottom mold via hinges. Two end molds are vertically slidably installed on the upper surface of the bottom mold and are in vertical contact with the two side molds in the initial state. Limiting blocks are evenly provided on the opposite surfaces of the side molds near the two side edges. The limiting blocks are used to limit the lateral sliding of the end molds. Several fixing holes are evenly provided on the end molds. The fixing holes are used to vertically limit the reinforcing bars protruding from the pouring cavity. A set of external concrete vibrators are evenly provided on the outer surface of the side molds. The precast reinforced concrete molding mold disclosed in this patent utilizes a concrete vibrator installed on the side template to achieve rapid and even leveling of the concrete inside the mold. However, the presence of the concrete vibrator makes it difficult to flip and demold. Furthermore, the concrete vibrator is susceptible to contamination and malfunction during pouring, and requires an external power supply, increasing operating costs and posing electrical safety hazards. In view of the above-mentioned shortcomings of existing precast reinforced concrete molding molds, this application proposes a precast concrete molding mold that utilizes the kinetic energy generated during concrete pouring to vibrate the mold itself, achieving automatic leveling of the concrete and facilitating easy demolding after curing. Summary of the Invention

[0004] The present invention aims to provide a precast concrete molding die, which utilizes the kinetic energy generated during concrete pouring to cause the die to vibrate and achieve automatic leveling of the concrete, and facilitates demolding after curing.

[0005] This invention is achieved through the following technical solution: A precast concrete mold includes an upper mold box and a lower mold base that fit together. A casting hopper is located at the upper end of the upper mold box. A feeding cylinder is connected to the lower end of the casting hopper, which extends into the inner cavity of the upper mold box. A rotating rod with blades is rotatably mounted in the feeding cylinder, and an incomplete gear is connected to the end of the rotating rod extending out of the feeding cylinder. A rack meshing with the incomplete gear is located in the upper mold box, and the rack is connected to the upper mold box via a spring. Vibrating plates are located on both sides of the upper mold box along the direction of rack movement. Impact heads acting on the vibrating plates are located at both ends of the rack. A pull-out groove is formed on the inner wall of the upper mold box below the feeding cylinder, and a cover plate is installed in the pull-out groove.

[0006] As a further provision of the above scheme, a slide rail perpendicular to the rotating rod is fixed on the top wall of the upper mold box, the rack is slidably mounted on the slide rail, a connecting plate is fixed on the top wall of the upper mold box, a protrusion is connected to the side of the rack, and the two ends of the spring are respectively connected to the connecting plate and the protrusion.

[0007] As a specific configuration of the above scheme, the vibrating plate includes a horizontal plate and multiple vertical plates. The horizontal plate is fixedly welded to the top wall of the upper mold box, and the multiple vertical plates are connected to the horizontal plate at intervals.

[0008] As a further feature of the above solution, multiple slots are provided on the outer edges of the joint between the upper mold box and the lower mold base, and fastening clamping components are provided on the corresponding slots of the upper mold box and the lower mold base.

[0009] As a further feature of the above scheme, the two ends of the lower mold base are integrally formed with vertically upward side plates. The upper end of the side plate is provided with a lower groove for the main reinforcing bar. The lower ends of the two side walls of the upper mold box are provided with side grooves that fit with the side plates. The upper end of the side grooves is provided with an upper groove for the main reinforcing bar. The lower groove for the main reinforcing bar and the upper groove for the main reinforcing bar are correspondingly provided.

[0010] As a further feature of the above solution, a storage groove is provided on the lower surface of the cover plate, and a pressing plate is provided in the storage groove. The pressing plate and the storage groove are connected by an elastic element. A pressure rod that acts on the pressing plate passes through the upper end of the cover plate, and an elastic reset pressing rod that is aligned with the pressure rod is provided on the upper surface of the upper mold box.

[0011] The concrete precast component molding mold disclosed in this invention involves placing a steel reinforcement frame into the molding cavity between the upper mold box and the lower mold base during precast component production. Then, concrete is evenly added into the pouring hopper. When the concrete enters the discharge cylinder, it falls due to its own weight, causing the bladed rotating rod to rotate. During the rotation of the rotating rod, the meshing transmission between the incomplete gear and the rack causes the rack to move along one direction of the slide rail, thereby stretching or compressing the spring to store energy. When the incomplete gear and the rack slip, the rack is released instantaneously under the action of the spring and impacts the vibrating plate, which in turn causes the upper mold box to vibrate, making the concrete in the molding cavity quickly and evenly leveled, without the need for a corresponding vibration motor to assist in the vibration.

[0012] In addition, if the concrete in the molding cavity hardens and becomes difficult to demold, the operator only needs to apply downward pressure to the elastic reset pressing rod on the upper mold box, which will push the pressing plate in the receiving groove downward. Under the action of the pressing plate, the precast part can move slightly between itself and the inner wall of the upper mold box. Then, the entire precast part can fall from the lower opening of the upper mold box under its own gravity, thus achieving the effect of rapid demolding.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The concrete precast component molding mold provided by this invention can convert the gravitational potential energy of falling concrete into the kinetic energy of the upper mold box itself. The entire molding mold can quickly and evenly level the concrete poured into the molding cavity without the aid of a vibration motor. Its ingenious structural design has excellent performance in casting and molding precast components.

[0014] The present invention further improves the design of the precast concrete forming mold. When the concrete is difficult to demold after curing, the operator only needs to apply downward pressure to the elastic reset pressing rod, which will cause the precast part to move slightly along the inner wall of the upper mold box. Then, the precast part can fall out of the lower opening of the upper mold box by its own weight, which has a better demolding effect. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention from a first angle; Figure 2 This is a schematic diagram of the second-angle three-dimensional structure of the present invention; Figure 3 This is an exploded view of the present invention. Figure 4 This is a bottom-view three-dimensional structural diagram of the upper mold box in this invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the casting hopper, feeding cylinder, etc. in this invention; Figure 6 For the present invention Figure 4 Enlarged structural diagram at point A; Figure 7 This is a schematic diagram of the internal planar structure of the main view in this invention; Figure 8 This is a three-dimensional cross-sectional view of the cover plate in Embodiment 2 of the present invention. Detailed Implementation

[0017] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The following will refer to the appendix... Figures 1-8 This application will be described in detail with reference to the embodiments. Example 1

[0019] Example 1 discloses a precast concrete component molding die, see attached drawing. Figure 1 and attached Figure 2 The molding die includes a lower mold base 1, an upper mold box 2, and a casting hopper 3. The casting hopper 3 is fixedly connected to the upper surface of the upper mold box 2, and the lower end opening of the upper mold box 2 is designed to allow it to fit seamlessly with the lower mold base 1. Multiple fastening clamps 4 are evenly arranged on the outer edge of the joint between the lower mold base 1 and the upper mold box 2 to ensure a stable fit between them. In the specific design, aligned slots 101 are evenly provided on the outer edges of the lower mold base 1 and the upper mold box 2. The clamping fastener 4 is a C-shaped elastic clip, and a pull-out head 401 is connected to the outside of the clamping fastener 4. After the lower mold base 1 and the upper mold box 2 are fitted together, the clamping fastener 4 is pushed into the two corresponding upper and lower slots 101. The elastic force of the clamping fastener 4 itself can make the two stably connected. When disassembly is required, simply hold the pull head 401 and pull the clamping fastener 4 out of the slot 101.

[0020] Reference Appendix Figure 4 and attached Figure 5 A discharge cylinder 5 is connected to the lower end of the pouring hopper 3, which extends into the upper mold box 2. A rotating rod 6 is positioned along the axial direction of the discharge cylinder 5, and several blades 7 are evenly arranged on the outer surface of the rotating rod 6 inside the discharge cylinder 5. When concrete enters the discharge cylinder 5 from the pouring hopper 3, it acts on the blades 7, thus keeping the rotating rod 6 in a state of continuous rotation. Incomplete gears 8 are connected to the outer ends of the rotating rod 6 extending beyond both ends of the discharge cylinder 5.

[0021] Reference Appendix Figure 4 and attached Figure 6 A slide rail 9, perpendicular to the rotating rod 6, is fixed on the top wall of the upper mold box 2 directly above each incomplete gear 8. A rack 10, meshing with the incomplete gear 8, slides on the slide rail 9. A protrusion 11 is connected to the side of the rack 10, and a connecting plate 12 is welded to the top wall of the upper mold box 2. A first spring 13 is connected between the protrusion 11 and the connecting plate 12. Impact vibration plates 14 are welded to the top walls of the upper mold box 2 on both the front and rear sides of the slide rail 9, and impact heads 15 are connected to both ends of the rack 10. During the rotation of the rotating rod 6, the incomplete gears 8 at both ends will rotate. Then, during the rotation of the incomplete gears 8, they will mesh with the rack 10, thereby driving the rack 10 to move along the slide rail 9 and compressing or stretching the first spring 13 to store its energy. When the incomplete gear 8 slips off from the rack 10, the rack 10 will quickly rebound along the slide rail 9 under the force of the first spring 13, causing the impact head 15 to strike the impact vibrating plate 14. This causes the impact vibrating plate 14 and the entire upper mold box 2 to vibrate, thereby making the concrete between the lower mold base 1 and the inner cavity of the upper mold box 2 quickly and evenly level. In addition, in order to amplify the impact vibration effect of the impact vibrating plate 14, the impact vibrating plate 14 is composed of a horizontal plate connected to the top wall of the upper mold box 2 and multiple vertical plates spaced apart and connected to the horizontal plate.

[0022] Reference Appendix Figure 3 and attached Figure 7 A pull-out slide groove 501 is provided on the side wall of the upper mold box 2 below the material feed cylinder 5, and one end of the pull-out slide groove 501 penetrates the side wall of the upper mold box 2. A cover plate 16 is slidably disposed in the pull-out slide groove 203. During the casting process of the precast part, the space between the lower part of the cover plate 16 and the upper surface of the lower mold base 1 forms a casting cavity. In addition, in order to facilitate the movement of the entire cover plate 16 along the pull-out slide groove 203, a handle 17 is also provided on the outer end face of the cover plate 16. Example 2

[0023] Example 2 discloses a precast concrete molding die based on Example 1, with improvements mainly addressing the difficulties in fixing the reinforcing steel frame during pouring and the challenges in demolding after curing. The following details the improvements in conjunction with the attached... Figure 3 Appendix Figure 4 and attached Figure 8 Explain it.

[0024] Vertically upward side plates 18 are integrally formed at both ends of the lower mold base 1, and several lower grooves 181 for main reinforcing bars are provided at the upper end of the side plates 18. Simultaneously, side grooves 201 that completely fit the side plates 18 are provided at the lower end of the inner walls on both sides of the upper mold box 2, and several upper grooves 202 for main reinforcing bars are provided at the upper end of the side grooves 201. The lower grooves 181 and upper grooves 202 for main reinforcing bars are arranged one-to-one. Before the precast component is poured, the main reinforcing bars on the reinforcing frame are placed on the lower grooves 181 on the side plates 18. Then, the reinforcing frame and the lower mold base 1 are inserted into the upper mold box 2, thereby clamping and fixing the entire reinforcing frame under the action of the lower grooves 181 and upper grooves 202, ensuring the stability of the reinforcing frame during concrete pouring.

[0025] To facilitate demolding after the precast component has cured, this embodiment 2 includes a storage groove 161 on the lower surface of the cover plate 16, and a pressing plate 162 is installed in the storage groove 161. A hollow column 163 communicating with the storage groove 161 is installed on the upper surface of the cover plate 16. A second spring 164 connected to the pressing plate 162 is installed in the hollow column 163. A pressure rod 165, whose lower end is connected to the pressing plate 162 and whose upper end passes through the hollow column 163, is installed in the hollow column 163. A pressure plate 166 is connected to the top of the pressure rod 165. Additionally, an elastic reset pressing rod 19 is installed at the upper end of the upper mold box 2, and this elastic reset pressing rod 19 is vertically aligned with the pressure plate 166. When the precast component has solidified and the lower mold base 1 has been removed, if the precast component inside the upper mold box 2 is not easy to demold, the operator can directly press the elastic reset pressing rod 19 to make it act on the pressure plate 166. Then, under the action of the pressure plate 166 and the pressing rod 165, the pressing plate 162 is pushed down, thereby forcibly pressing down and loosening the precast component inside the upper mold box 2, so that it can be demolded quickly.

[0026] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A precast concrete component molding die, comprising an upper mold box and a lower mold base that fit together, characterized in that, The upper mold box is provided with a casting hopper at its upper end. The lower end of the casting hopper, which extends into the inner cavity of the upper mold box, is connected to a material discharge cylinder. A rotating rod with blades is rotatably installed in the material discharge cylinder, and an incomplete gear is connected to the end of the rotating rod extending out of the material discharge cylinder. A rack that meshes with the incomplete gear is provided in the upper mold box, and the rack is connected to the upper mold box by a spring. Vibrating plates are provided in the upper mold box on both sides along the moving direction of the rack. Impact heads that act on the vibrating plates are provided at both ends of the rack. A pull-out groove is provided on the inner wall of the upper mold box below the material discharge cylinder, and a cover plate is provided in the pull-out groove.

2. The precast concrete molding die according to claim 1, characterized in that, A slide rail perpendicular to the rotating rod is fixed on the top wall of the upper mold box. The rack is slidably mounted on the slide rail. A connecting plate is fixed on the top wall of the upper mold box. A protrusion is connected to the side of the rack. The two ends of the spring are respectively connected to the connecting plate and the protrusion.

3. The precast concrete molding die according to claim 1, characterized in that, The vibrating plate includes a horizontal plate and multiple vertical plates. The horizontal plate is fixedly welded to the top wall of the upper mold box, and the multiple vertical plates are connected to the horizontal plate at intervals.

4. The precast concrete molding die according to claim 1, characterized in that, Multiple slots are provided on the outer edge of the joint between the upper mold box and the lower mold base, and fastening clamps are provided on the corresponding slots of the upper mold box and the lower mold base.

5. The precast concrete molding die according to any one of claims 1-4, characterized in that, The lower mold base has vertically upward side plates integrally formed at both ends. The upper end of the side plate is provided with a lower groove for the main reinforcing bar. The lower ends of the two side walls of the upper mold box are provided with side grooves that fit with the side plates. The upper end of the side grooves is provided with an upper groove for the main reinforcing bar. The lower groove for the main reinforcing bar and the upper groove for the main reinforcing bar are correspondingly provided.

6. The precast concrete molding die according to any one of claims 1-4, characterized in that, The lower surface of the cover plate is provided with a storage groove, and a pressing plate is provided in the storage groove. The pressing plate and the storage groove are connected by an elastic element. A pressure rod that acts on the pressing plate passes through the upper end of the cover plate. An elastic reset pressing rod that is aligned with the pressure rod is provided on the upper surface of the upper mold box.

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