A molding device and molding method based on prefabricated staircase production

Abstract

This invention discloses a molding device and method for producing precast stairs, including a first mold and a second mold, which together form a complete stair mold; it also includes a storage tank, the bottom of which is connected to multiple conveying pipes. The molding device and method provided by this invention pour concrete from the storage tank onto a manifold plate, which then pours the concrete into the stair mold. During pouring, the manifold plate is driven downwards, and a reciprocating component drives a vibrator to swing, vibrating to remove air bubbles in the concrete. After a single pour is completed, the manifold plate moves upwards, driving a tamping plate to move up and down, flattening the concrete surface and eliminating air bubbles. This also prevents surface air bubbles from being washed into the concrete during subsequent pours, reducing the number of air bubbles in the concrete. Timely vibration eliminates air bubbles in the concrete, reducing vibration time.

Description

Technical Field

[0001] This invention relates to the field of building technology, and specifically to a molding device and molding method for the production of prefabricated stairs. Background Technology

[0002] Precast stairs refer to standardized building products that are prefabricated in factories or construction sites using industrialized production methods. They are then transported to the construction site and assembled. The existing precast stairs are formed by cleaning and assembling the mold, binding the steel bars and positioning the embedded parts, then injecting cement and vibrating it to eliminate air bubbles and ensure that the concrete covers the embedded parts. After steam curing, the precast stairs are vertically lifted and demolded using embedded lifting rings, thus completing the preparation of the precast stairs.

[0003] When preparing precast stairs, the concrete needs to be poured and then vibrated. When preparing vertical molds, after pouring, the vibrator needs to be inserted into the bottom of the concrete and then gradually pulled out. This process requires the air bubbles at the bottom to gradually move to the surface, which increases the vibration time. In areas with dense reinforcement, the vibrator cannot effectively remove air bubbles, which weakens the load-bearing capacity of the component. Furthermore, pouring in one go increases the lateral pressure on the formwork, increasing the possibility of formwork deformation or displacement of embedded parts. Summary of the Invention

[0004] The purpose of this invention is to provide a molding device and molding method based on the production of prefabricated stairs, so as to solve the above-mentioned shortcomings in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a molding device based on the production of prefabricated stairs, comprising a first mold and a second mold, wherein the first mold and the second mold constitute a complete stair mold;

[0006] It also includes a storage tank, the bottom of which is connected to multiple conveying pipes. The cement in the storage tank is conveyed to a diversion plate through the conveying pipes and then diverted into the stair mold. Multiple connecting rods are slidably arranged in the diversion plate and extend into the stair mold.

[0007] It also includes multiple connecting plates disposed within the staircase mold, and each connecting plate is provided with a vibrating rod at its bottom. When the diverter plate moves down, the vibrating rod is driven to swing by the reciprocating assembly to increase the vibration area.

[0008] It also includes a tamping plate, which, when the diverter plate moves upward, is driven by the tamping component to reciprocate and flatten the vibrated concrete.

[0009] As a further description of the above technical solution:

[0010] The reciprocating assembly includes a rotating rod that rotates at the bottom of the diverter plate. Rollers are fixedly connected to both ends of the rotating rod. The rollers are in rolling contact with the connecting rod. Multiple first rollers are fixedly connected to the outside of the rotating rod.

[0011] As a further description of the above technical solution:

[0012] The reciprocating assembly further includes a reciprocating lead screw rotatably mounted on the connecting plate, a guide block slidably mounted on the connecting plate, the guide block extending into the helical groove of the reciprocating lead screw, a swing rod rotatably connected inside the connecting plate, the bottom end of the swing rod penetrating the tamping plate and fixedly connected to a vibrating rod, and the guide block in movable contact with the swing rod.

[0013] As a further description of the above technical solution:

[0014] The reciprocating screw is externally fixedly connected to two second spools, and a connecting rope is wound around the second spools. The end of the connecting rope is fixedly connected to the first spool.

[0015] As a further description of the above technical solution:

[0016] The flattening assembly includes two ratchet wheels fixed to the outside of the reciprocating screw. Two reciprocating rods are fixedly connected to the top of the flattening plate. The reciprocating rods pass through the connecting plate, and a sliding rod is slidably disposed inside the reciprocating rod. The sliding rod is in active contact with the ratchet wheels.

[0017] As a further description of the above technical solution:

[0018] A limit spring is fixedly connected to the end of the sliding rod, and the limit spring is fixedly connected to the inner wall of the reciprocating rod.

[0019] As a further description of the above technical solution:

[0020] The reciprocating lead screw is fitted with a coil spring, and the two ends of the coil spring are respectively fixedly connected to the second coil shaft and the connecting plate.

[0021] As a further description of the above technical solution:

[0022] The ratchet teeth of the ratchet are configured with a wedge-shaped surface on one side, and the end of the sliding rod is arc-shaped.

[0023] As a further description of the above technical solution:

[0024] The top ends of multiple connecting rods located within the same diversion plate are fixedly connected to the same limiting plate, and the top of the storage tank is fixedly connected to multiple telescopic rods, the output ends of which are fixedly connected to the limiting plate.

[0025] As a further description of the above technical solution:

[0026] A molding method based on prefabricated staircase production includes the following steps:

[0027] S1. Formwork Closure: Place the steel cage between the first mold and the second mold, and then close the first mold and the second mold together.

[0028] S2. Pouring: Pouring a fixed amount of concrete into the staircase mold;

[0029] S3. Vibration: During pouring, the vibrator is driven to swing through the reciprocating component to vibrate and vent the concrete.

[0030] S4. Flattening: After pouring, the vibrator stops swinging and the flattening component drives the flattening plate to reciprocate and flatten the concrete surface, eliminating air bubbles on the surface.

[0031] In the above technical solution, the molding device and molding method based on prefabricated staircase production provided by the present invention have the following beneficial effects:

[0032] This invention involves pouring concrete from a storage tank onto a manifold plate, which then pours the concrete into a staircase mold. During pouring, the manifold plate is driven to move downwards, and a reciprocating assembly drives a vibrator to swing, vibrating to remove air bubbles from the concrete. After each pour, the manifold plate moves upwards, driving a tamping plate to move up and down, flattening the concrete surface and eliminating air bubbles. This prevents air bubbles from being washed into the concrete during subsequent pours, reducing the number of air bubbles within the concrete. Timely vibration eliminates air bubbles, reducing vibration time and improving preparation efficiency. Staged pouring gradually releases the pressure of the concrete on the staircase mold, ensuring the accuracy of the component dimensions.

[0033] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this disclosure.

[0034] This application provides an overview of various implementations or examples of the technology described in this disclosure, and is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0036] Figure 1 This is a three-dimensional structural schematic diagram provided for an embodiment of the present invention;

[0037] Figure 2 Provided for embodiments of the present invention Figure 1 The enlarged view at point A is shown below;

[0038] Figure 3 Provided for embodiments of the present invention Figure 1 The enlarged view at point B is shown below;

[0039] Figure 4 A schematic diagram of the internal structure of the first mold provided in an embodiment of the present invention;

[0040] Figure 5 A three-dimensional structural diagram of the connecting plate and the striking plate provided in an embodiment of the present invention;

[0041] Figure 6 Provided for embodiments of the present invention Figure 5 The enlarged view at point C is shown below;

[0042] Figure 7 A bottom view of the diverter provided in an embodiment of the present invention;

[0043] Figure 8 A partial longitudinal section diagram of the reciprocating rod provided in an embodiment of the present invention;

[0044] Figure 9 A schematic diagram of the structure of the second scroll provided in an embodiment of the present invention.

[0045] Explanation of reference numerals in the attached figures:

[0046] 11. First mold; 12. Second mold; 2. Storage tank; 21. Conveying pipe; 22. Diverter plate; 23. Connecting rod; 24. Connecting plate; 3. Vibrator; 4. Patting plate; 51. Rotating rod; 52. Roller; 53. First reel; 54. Reciprocating screw; 55. Guide block; 56. Swinging rod; 57. Second reel; 58. Connecting rope; 61. Ratchet; 62. Reciprocating rod; 63. Sliding rod; 64. Limiting spring; 65. Coil spring; 7. Limiting plate; 71. Telescopic rod. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0048] Please see Figures 1-8This embodiment provides a molding device based on the production of prefabricated stairs, including a first mold 11 and a second mold 12, which together form a complete stair mold.

[0049] It also includes a storage tank 2, the bottom of which is connected to multiple conveying pipes 21. The conveying pipes 21 are made of a telescopic material. During the movement of the diversion plate 22, the outlet of the telescopic pipe is on the diversion plate 22 to reduce concrete loss. The cement in the storage tank 2 is conveyed to the diversion plate 22 through the conveying pipes 21. The diversion plate 22 is set with an inclined surface to assist the concrete flow into the stair mold. Multiple connecting rods 23 are slidably arranged in the diversion plate 22 and extend into the stair mold. A circular tube is set in the storage tank 2, and the circular tube is integrally formed with the storage tank 2. The connecting rods 23 slide in the circular tube (e.g., Figure 3 (as shown), to reduce the impact of concrete on the connecting rod when it slides;

[0050] It also includes multiple connecting plates 24 set in the stair mold, and each connecting plate 24 is provided with a vibrating rod 3 at the bottom. When the diversion plate 22 moves down, the vibrating rod 3 is driven to swing by the reciprocating component to increase the vibration area. The top of the connecting plate is provided with a protective cover to protect the reciprocating component and prevent concrete from falling into the connecting plate and affecting the rotation of the reciprocating component.

[0051] It also includes a tamping plate 4, which, when the diversion plate 22 moves upward, is driven by the tamping component to reciprocate and flatten the vibrated concrete.

[0052] In a further embodiment of the present invention, the reciprocating assembly includes a rotating rod 51 rotating at the bottom of the diverter plate 22, with rollers 52 fixedly connected to both ends of the rotating rod 51. The rollers 52 are in rolling contact with the connecting rod 23, and a plurality of first rollers 53 are fixedly connected to the outside of the rotating rod 51.

[0053] Furthermore, the reciprocating assembly also includes a reciprocating lead screw 54 rotatably mounted on the connecting plate 24, a guide block 55 slidably mounted on the connecting plate 24, the guide block 55 extending into the spiral groove of the reciprocating lead screw 54, a swing rod 56 rotatably connected inside the connecting plate 24, the bottom end of the swing rod 56 passing through the tack plate 4 and fixedly connected to the vibrating rod 3, the guide block 55 and the swing rod 56 in movable contact, and a long groove is provided on the tack plate 4, so that when the swing rod 56 rotates, it can rotate inside the tack plate 4, thereby driving the vibrating rod 3 to rotate left and right.

[0054] Furthermore, two second spools 57 are fixedly connected to the reciprocating screw 54. A connecting rope 58 is wound around the second spools 57. The end of the connecting rope 58 is fixedly connected to the first spool 53. The diameter of the wheel of the first spool 53 is larger than that of the second spool 57. When the diverter plate 22 moves down, it drives the first spool 53 to rotate, thereby winding up the connecting rope 58, and at the same time, it can drive the second spool 57 to rotate.

[0055] In a further embodiment of the present invention, the flattening assembly includes two ratchet wheels 61 fixed to the outside of the reciprocating screw 54, and two reciprocating rods 62 fixedly connected to the top of the flattening plate 4. The reciprocating rods 62 penetrate the connecting plate 24, and a sliding rod 63 is slidably disposed inside the reciprocating rods 62, and the sliding rod 63 is in active contact with the ratchet wheels 61.

[0056] In the embodiments provided by the present invention, a limiting spring 64 is fixedly connected to the end of the sliding rod 63, and the limiting spring 64 is fixedly connected to the inner wall of the reciprocating rod 62.

[0057] Specifically, the reciprocating screw 54 is fitted with a coil spring 65, and the two ends of the coil spring 65 are respectively fixedly connected to the second coil shaft 57 and the connecting plate 24. The two outermost connecting rods 23 on the same side of the diversion plate 22 are fitted with return springs, which drive the diversion plate 22 to move upward and reset when the concrete conveying stops on the surface of the diversion plate 22.

[0058] In a further embodiment of the present invention, one side of the ratchet tooth of the ratchet 61 is provided as a wedge-shaped surface, and the end of the sliding rod 63 is arc-shaped. When the ratchet 61 rotates forward, the wedge-shaped surface of the ratchet 61 contacts the sliding rod 63. Therefore, when the ratchet 61 rotates, the sliding rod 63 slides into the reciprocating rod 62. When the ratchet 61 rotates in reverse, the plane of the ratchet 61 contacts the sliding rod 63. When the ratchet 61 rotates, it drives the sliding rod 63 to move upward, which drives the reciprocating rod 62 to move synchronously. After the ratchet tooth moves out of the sliding rod 63, the reciprocating rod 62 moves downward under gravity, realizing the up and down movement of the reciprocating rod 62.

[0059] In this invention, the top ends of multiple connecting rods 23 located in the same diversion plate 22 are fixedly connected to the same limiting plate 7, and the top of the storage tank 2 is fixedly connected to multiple telescopic rods 71. The output end of the telescopic rods 71 ​​is fixedly connected to the limiting plate 7. After a single pour is completed, the telescopic rods 71 ​​are driven to move the limiting plate 7 upward, thereby moving the vibrating rod 3 and the tamping plate 4 upward, which is convenient for the next pour.

[0060] In this invention, a molding method based on the production of prefabricated stairs includes the following steps:

[0061] S1. Formwork Closure: Place the steel cage between the first mold 11 and the second mold 12, and then close the first mold 11 and the second mold 12.

[0062] S2. Pouring: Pouring a fixed amount of concrete into the staircase mold;

[0063] S3, Vibration: During pouring, the vibrator rod 3 is driven to swing by the reciprocating component to vibrate and vent the concrete.

[0064] S4. Flattening: After pouring, the vibrator 3 stops swinging and the flattening component drives the flattening plate 4 to reciprocate and flatten the concrete surface to eliminate air bubbles on the surface.

[0065] In use, first apply a release agent to the surfaces of the first mold 11 and the second mold 12, then put the steel cage into the first mold 11 and the second mold 12, then merge the first mold 11 and the second mold 12 to form a complete staircase mold, and then pour concrete into the storage tank 2.

[0066] Concrete is injected into the diversion plate 22 through the output pipe, and then flows to both sides of the diversion plate 22 into the stair mold. At the same time, the diversion plate 22 is driven to move down, causing the roller 52 to rotate outside the connecting rod 23, driving the first reel 53 to rotate, winding the connecting rope 58, thus driving the second reel 57 to rotate, so that the reciprocating screw 54 rotates synchronously.

[0067] When the reciprocating screw 54 rotates forward, the drive guide block 55 slides back and forth on the surface of the reciprocating screw 54, thereby pushing the swing rod 56 to rotate. When the guide block 55 moves to one end, the guide block 55 moves out of the swing rod 56. When the guide block 55 moves to the other end, the drive swing rod 56 rotates in the opposite direction. During the reciprocating motion of the guide block 55, the drive swing rod 56 swings left and right, causing the vibrator 3 to swing synchronously, increasing the vibration area.

[0068] After the pouring is completed, the conveying of the conveying pipe 21 is stopped. The return spring moves upward to reset, thereby driving the first reel 53 to rotate and loosen the connecting rope 58. This causes the second reel 57 to reverse and rewind the connecting rope 58 under the action of the coil spring 65. At this time, the reciprocating screw rotates in the opposite direction, thereby driving the reciprocating rod 62 to slide up and down during the rotation of the ratchet 61, driving the tack plate 4 to move synchronously. This allows the tack plate 4 to eliminate air bubbles vibrating to the concrete surface during the upward movement of the diverter plate 22.

[0069] After the diversion plate 22 moves and resets, the limit plate 7 is driven to move upward through the telescopic rod 71, thereby driving the diversion plate 22 and the connecting plate 24 to move upward away from the concrete through the connecting rod 23, so that the concrete can be poured again until the pouring is completed.

[0070] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A forming device for the production of prefabricated stairs, comprising a first mold (11) and a second mold (12), characterized in that: The first mold (11) and the second mold (12) form a complete stair mold; Further comprising a storage tank (2), the bottom of the storage tank (2) is communicated with a plurality of conveying pipes (21), the cement in the storage tank (2) is conveyed to the distribution plate (22) through the conveying pipes (21) and is distributed to the stair mold, a plurality of connecting rods (23) are slidably arranged in the distribution plate (22), and the connecting rods (23) extend into the stair mold; Further comprising a plurality of connecting plates (24) arranged in the stair mold, the bottom of each connecting plate (24) is provided with a vibrating rod (3), when the distribution plate (22) moves downward, the vibrating rod (3) is driven to swing through the reciprocating assembly, so as to increase the vibrating area; Further comprising a flattening plate (4), when the distribution plate (22) moves upward, the flattening plate (4) is driven to reciprocate through the flattening assembly, so as to perform flattening treatment on the vibrated concrete; The reciprocating assembly comprises a rotating rod (51) rotating at the bottom of the distribution plate (22), both ends of the rotating rod (51) are fixedly connected with rollers (52), the rollers (52) are in rolling contact with the connecting rods (23), and a plurality of first spools (53) are fixedly connected outside the rotating rod (51); The reciprocating assembly further comprises a reciprocating screw rod (54) rotatingly arranged on the connecting plate (24), a guide block (55) is slidably arranged on the connecting plate (24), the guide block (55) extends into a spiral groove of the reciprocating screw rod (54), a swing rod (56) is rotatably connected in the connecting plate (24), the bottom end of the swing rod (56) penetrates through the flattening plate (4) and is fixedly connected with the vibrating rod (3), and the guide block (55) is in movable contact with the swing rod (56); Two second spools (57) are fixedly connected outside the reciprocating screw rod (54), a connecting rope (58) is wound outside the second spool (57), and the end of the connecting rope (58) is fixedly connected with the first spool (53); The flattening assembly comprises two ratchets (61) fixed outside the reciprocating screw rod (54), the top of the flattening plate (4) is fixedly connected with two reciprocating rods (62), the reciprocating rods (62) penetrate through the connecting plate (24), a sliding rod (63) is slidably arranged in the reciprocating rod (62), and the sliding rod (63) is in movable contact with the ratchet (61); The end of the sliding rod (63) is fixedly connected with a limiting spring (64), and the limiting spring (64) is fixedly connected with the inner wall of the reciprocating rod (62); The reciprocating screw rod (54) is sleeved with a coiled spring (65), and both ends of the coiled spring (65) are fixedly connected with the second spool (57) and the connecting plate (24) respectively; The side of the ratchet of the ratchet (61) is provided with a wedge surface, and the end of the sliding rod (63) is arc-shaped.

2. A forming device for the production of prefabricated stairs according to claim 1, characterized in that The top ends of the plurality of connecting rods (23) in the same distribution plate (22) are fixedly connected with the same limiting plate (7), the top of the storage tank (2) is fixedly connected with a plurality of telescopic rods (71), and the output end of the telescopic rod (71) is fixedly connected with the limiting plate (7).

3. A forming method based on the production of prefabricated stairs, based on the forming device according to any one of the preceding claims 1-2, characterized in that, The method comprises the following steps: S1, clamping: the reinforcement cage is placed between the first mold (11) and the second mold (12), and then the first mold (11) and the second mold (12) are clamped; S2, pouring: pouring a certain amount of concrete into the stair mold; S3, vibrating: while pouring, the vibrating rod (3) is swung by the reciprocating assembly to vibrate and vent the concrete; S4, flattening: after pouring is completed, the vibrating rod (3) stops swinging, and the flattening plate (4) is driven by the flattening assembly to reciprocate and flatten the concrete surface to eliminate bubbles on the surface.

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