A prefabricated column forming combined die and a forming method thereof

Abstract

The present application belongs to the technical field of prefabricated column manufacturing equipment, and provides a prefabricated column forming combined die and a forming method thereof. The prefabricated column forming combined die comprises a die main body, a first end die and a second end die. The die main body comprises a lower die and an upper die buckled on the lower die. The first end die is arranged at the first end of the die main body, and the second end die is arranged at the second end of the die main body. The die main body, the first end die and the second end die jointly enclose a forming cavity. The prefabricated column forming combined die further comprises a material supplementing device for supplementing concrete into the forming cavity during the second centrifugal forming process, and an inner diameter detecting device for detecting the inner diameter of the prefabricated column during the second centrifugal forming process. The prefabricated column forming combined die and the forming method thereof have high accuracy of the inner diameter of the hollow column manufactured.

Description

Technical Field

[0001] This invention relates to the field of precast column manufacturing equipment technology, specifically to a precast column forming assembly mold and its forming method. Background Technology

[0002] Compared with on-site casting, precast columns have advantages such as reducing the amount of concrete and formwork used, better ensuring product quality, and improving construction efficiency, and are therefore widely used.

[0003] Hollow columns, as a widely used type of precast column, require the mold after molding to be placed on a centrifuge during the manufacturing process. The centrifuge drives the mold to rotate, and the centrifugal force is used to mix and flatten the concrete inside the mold to form the shape.

[0004] However, in the existing technology, it is impossible to guarantee that the amount of concrete added to the lower mold containing the steel cage will always be consistent. When more concrete is added, the inner diameter of the hollow column after centrifugation will be smaller; conversely, when less concrete is added, the inner diameter of the hollow column after centrifugation will be larger, resulting in poor accuracy of the inner diameter of the manufactured hollow column. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the purpose of this invention is to provide a precast column forming assembly mold and its forming method to solve or alleviate the above-mentioned technical problems in the prior art.

[0006] To achieve the above objectives, in one aspect, the present invention provides a precast column forming assembly mold, comprising a mold body, a first end mold, and a second end mold. The mold body includes a lower mold and an upper mold fastened to the lower mold. The first end mold is disposed at a first end of the mold body, and the second end mold is disposed at a second end of the mold body. The mold body, the first end mold, and the second end mold together form a forming cavity. The mold also includes:

[0007] A feeding device, disposed within the molding cavity, is used to replenish concrete into the molding cavity during the second centrifugal molding process; and

[0008] An inner diameter detection device is installed on the feeding device and is used to detect the inner diameter of the preform column during the second centrifugal molding process.

[0009] Furthermore, the feeding device includes:

[0010] A feeding pipe is disposed in the molding cavity. Its first end is rotatably connected to the first end mold and its second end is rotatably connected to the second end mold. Its sidewall is provided with a discharge groove along its axis.

[0011] A connecting sleeve is fitted onto the second end of the feeding pipe, with its first end rotatably connected to the feeding pipe and its second end detachably connected to the feeding device; and

[0012] The first gear is sleeved on the first or second end of the feeding tube and is connected to the feeding tube in a driving manner.

[0013] During material replenishment, the first gear drives the material replenishment pipe to rotate, so as to throw the concrete in the material replenishment pipe out of the discharge chute.

[0014] Furthermore, the feed pipe includes:

[0015] The first end is cylindrical and is coaxially arranged with the first end mold and rotatably connected to the first end mold.

[0016] The second end is cylindrical, hollow and open at both ends, and is coaxially arranged with the first end and rotatably connected to the second end mold.

[0017] A first arc-shaped plate is coaxially arranged with the first end, and its first end is fixedly connected to the first end and its second end is fixedly connected to the second end.

[0018] A second arc-shaped plate, coaxially arranged with the first arc-shaped plate, forms a discharge chute between the second and first arc-shaped plates for concrete passage. A first end of the second arc-shaped plate is slidably connected to the first end, and a second end is slidably connected to the second end. The second arc-shaped plate has a cleaning position and a replenishing position. When the second arc-shaped plate is in the cleaning position, the width of the discharge chute is larger; when the second arc-shaped plate is in the replenishing position, the width of the discharge chute is smaller.

[0019] A locking structure is provided between the first end and the second arc-shaped plate and / or between the second end and the second arc-shaped plate, which is used to lock the second arc-shaped plate.

[0020] Furthermore, the locking structure includes:

[0021] A locking pin is disposed within the first end or the second end and is slidably connected to the first end or the second end, so that the locking pin can move radially between a locked position and an unlocked position along the first end or the second end.

[0022] A first elastic element, corresponding to the locking pin, has a first end connected to the first end or the second end, and a second end connected to the locking pin. In its natural state, the first elastic element applies a spring force to the locking pin, causing the locking pin to tend to move from the unlocked position to the locked position.

[0023] The second arc-shaped plate is provided with a first locking hole and a second locking hole. When the second arc-shaped plate is in the cleaning position, the first locking hole corresponds to the locking pin; when the second arc-shaped plate is in the replenishing position, the second locking hole corresponds to the locking pin.

[0024] Furthermore, the inner diameter detection device includes a distance sensor, which is disposed on the feeding pipe and is used to detect the distance between it and the inner sidewall of the precast column.

[0025] Furthermore, the inner diameter detection device also includes a shielding structure, the shielding structure comprising:

[0026] A lens is disposed at the signal transmitting end of the distance sensor and is fixedly connected to the feed tube;

[0027] A blocking slider is disposed on the side of the lens away from the distance sensor. It is slidably connected to the feed tube and has a blocking position that can block the lens and an avoidance position that can avoid the lens.

[0028] A gravity block, which is slidably connected to the feeding pipe so that it can move radially along the feeding pipe;

[0029] A pull rope, one end of which is connected to the gravity block and the second end of which is connected to the blocking slider; and

[0030] The second elastic element has a first end connected to the blocking slider and a second end connected to the feeding tube;

[0031] During the detection process, the gravity block, under the action of centrifugal force, pulls the blocking slider from the blocking position to the avoidance position through the pull rope;

[0032] When the block is in place, the second elastic element applies a spring force to the block slider to move the block slider to the block position.

[0033] On the other hand, the present invention also provides a method for forming precast columns, which is used in the precast column forming assembly mold described in any one of the above claims, comprising the following steps:

[0034] S1, calculate the amount of concrete required for the target precast column, denoted as m1;

[0035] S2, add a preset amount of concrete, denoted as m2, into the lower mold containing the steel cage, where m2 < m1;

[0036] S3, Perform a mold closing operation on the precast column forming assembly mold;

[0037] S4, Perform the first centrifugal molding operation on the precast column forming assembly mold;

[0038] S5, the feeding device adds concrete to the molding cavity and continues to perform centrifugal molding on the precast column molding assembly mold. At the same time, the inner diameter detection device detects the inner diameter of the precast column. When the inner diameter of the precast column is within the preset range, the precast column molding assembly mold is transferred to the steam curing equipment for steam curing treatment of the precast column.

[0039] The beneficial effects of this invention are:

[0040] The precast column forming combination mold and its forming method provided by the present invention, by setting up a feeding device and an inner diameter detection device, after the first centrifugal forming, the feeding device adds concrete to the forming cavity, and the inner diameter detection device detects the inner diameter of the precast column, thereby achieving the purpose of improving the accuracy of the inner diameter of the manufactured hollow column. Attached Figure Description

[0041] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0042] Figure 1 This is an exploded perspective view of a precast column forming assembly mold provided in an embodiment of the present invention;

[0043] Figure 2 for Figure 1 A perspective view of the feeding device for the precast column forming assembly mold shown;

[0044] Figure 3 for Figure 2 A partial sectional view of the feeding device shown;

[0045] Figure 4 for Figure 3 An enlarged view of part A shown;

[0046] Figure 5 for Figure 3 An enlarged view of section B is shown below;

[0047] Figure 6 for Figure 2 A perspective view of the second arc-shaped plate of the feeding pipe of the feeding device shown;

[0048] Figure 7 for Figure 6 An enlarged view of section C shown.

[0049] Figure label:

[0050] 110. Lower mold; 120. Upper mold; 130. First end mold; 140. Second end mold; 200. Feeding tube; 210. First end; 220. Second end; 230. First arc plate; 240. Second arc plate; 241. First locking hole; 242. Second locking hole; 251. Locking pin; 252. First elastic element; 300. Connecting sleeve; 400. First gear; 500. Distance sensor; 610. Lens; 620. Blocking slider; 630. Pull rope; 640. Gravity block; 650. Second elastic element. Detailed Implementation

[0051] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0052] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0053] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0054] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly defined.

[0055] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0056] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0057] like Figure 1 As shown, the precast column forming combination mold provided by the present invention includes a mold body, a first end mold 130 and a second end mold 140.

[0058] The mold body includes a lower mold 110 and an upper mold 120. The upper mold 120 is fastened above the lower mold 110 and detachably connected to the lower mold 110 by bolts. A first end mold 130 is located at the first end of the mold body and detachably connected to the mold body by bolts. A second end mold 140 is located at the second end of the mold body and detachably connected to the mold body by bolts. The mold body, the first end mold 130, and the second end mold 140 together form a molding cavity. These are all existing technologies and will not be described in detail here.

[0059] The precast column forming combination mold provided by the present invention also includes a material feeding device and an inner diameter detection device.

[0060] The feeding device is installed inside the molding cavity. The first end of the feeding device is connected to the first end mold 130, and the second end is connected to the second end mold 140. The inner diameter detection device is installed on the feeding device.

[0061] The feeding device is used to add concrete to the molding cavity during the second centrifugal molding process, and the inner diameter detection device is used to detect the inner diameter of the precast column during the second centrifugal molding process.

[0062] Specifically, assuming the amount of concrete required to manufacture the target precast column is m1, firstly, a preset amount of concrete, denoted as m2, is added to the lower mold 110 containing the reinforcing cage, and m2 < m1, so that the inner diameter of the precast column manufactured after the first centrifugal molding is always greater than the inner diameter of the target precast column; then, the mold is closed, that is, the upper mold 120 is fastened onto the lower mold 110 and the bolts used to lock the upper mold 120 and the lower mold 110, the first end mold 130 and the mold body, and the second end mold 140 and the mold body are tightened; The entire precast column forming assembly mold is then transferred to a centrifuge for the first centrifugal forming operation. Concrete is then added to the forming cavity through a feeding device. Simultaneously, the centrifuge drives the precast column forming assembly mold to rotate for the second centrifugal forming operation. During this process, the inner diameter detection device detects the inner diameter of the precast column. When the inner diameter detection device detects that the inner diameter of the precast column is within the preset range (i.e., within the allowable error range of the target precast column), the precast column forming assembly mold is transferred to the steam curing equipment for steam curing of the precast column.

[0063] The precast column forming combination mold provided by the present invention, by setting a feeding device and an inner diameter detection device, after the first centrifugal forming, adds concrete to the forming cavity through the feeding device, and uses the inner diameter detection device to detect the inner diameter of the precast column, thereby achieving the purpose of improving the accuracy of the inner diameter of the manufactured hollow column.

[0064] like Figure 2 As shown, the feeding device includes a feeding pipe 200, a connecting sleeve 300, and a first gear 400.

[0065] A feeding pipe 200 is disposed inside the molding cavity. The first end of the feeding pipe 200 is rotatably connected to the first end mold 130, and the second end is rotatably connected to the second end mold 140. A discharge groove is provided on the side wall of the feeding pipe 200 along its axis. A connecting sleeve 300 is sleeved on the second end of the feeding pipe 200, and the first end of the connecting sleeve 300 is rotatably connected to the feeding pipe 200, while the second end is detachably connected to the feeding device.

[0066] A first gear 400 is sleeved on either the first or second end of the feeding pipe 200. In this embodiment, the first gear 400 is located at the first end of the feeding pipe 200. The first gear 400 is connected to the feeding pipe 200 in a transmission manner, so that power can be transmitted to the feeding pipe 200 through the first gear 400, thereby driving the feeding pipe 200 to rotate. During feeding, the first gear 400 drives the feeding pipe 200 to rotate, so as to throw the concrete in the feeding pipe 200 out of the discharge chute.

[0067] The feeding device includes a body, on which a storage bin and a screw conveyor are installed. The storage bin is funnel-shaped, and the feed end of the screw conveyor is connected to and communicates with the discharge port of the storage bin. The discharge end is detachably connected to the second end of the connecting sleeve 300 (e.g., threaded connection, snap-fit, sleeve connection, etc.).

[0068] The centrifuge is also equipped with a second motor, and the power output shaft of the second motor is equipped with a second gear that can mesh with the first gear 400.

[0069] Specifically, in use, after transferring the precast column forming assembly mold onto the centrifuge, the second end of the connecting sleeve 300 is connected to the feeding device so that the feeding device can deliver concrete into the feeding pipe 200, and at the same time, the first gear 400 meshes with the second gear.

[0070] After the first centrifugal molding, the feeding device and the second motor are started, so that the feeding device delivers concrete into the feeding pipe 200. Under the action of centrifugal force, the concrete delivered into the feeding pipe 200 enters the molding cavity from the discharge chute of the feeding pipe 200. During this process, the centrifuge continues to drive the precast column molding assembly mold to rotate, thereby performing the second centrifugal molding operation.

[0071] Preferably, the filling pipe 200 is only driven to rotate (i.e., the second motor is only started) after the filling pipe 200 is filled with concrete, so that the added concrete can be evenly distributed in the molding cavity.

[0072] Because the feeding pipe 200 is relatively long, if the feeding device continues to feed concrete into the feeding pipe 200 while it is rotating, it is inevitable that the amount of concrete added to the molding cavity will be greater closer to the feed end of the feeding pipe 200. Therefore, preferably, the feeding pipe 200 replenishes concrete into the molding cavity in stages. Specifically, firstly, the feeding device feeds concrete into the feeding pipe 200 to fill the entire feeding pipe 200. After the feeding pipe 200 is full of concrete, the feeding device stops feeding concrete into the feeding pipe 200 and drives the feeding pipe 200 to rotate, so as to achieve the purpose of replenishing concrete into the molding cavity. That is, during the rotation of the feeding pipe 200, the feeding device will not continue to feed concrete into the feeding pipe 200. Only after all the concrete in the feeding pipe 200 has been added into the molding cavity will the feeding device continue to feed concrete into the feeding pipe 200, so as to achieve the purpose of more evenly distributing the replenished concrete in the molding cavity.

[0073] like Figure 2-5 As shown, the feeding tube 200 includes a first end 210, a second end 220, a first arc plate 230, a second arc plate 240, and a locking structure.

[0074] The first end 210 is cylindrical and coaxially arranged with the first end mold 130, and rotatably connected to the first end mold 130. The second end 220 is cylindrical, hollow, and open at both ends, coaxially arranged with the first end 210, and rotatably connected to the second end mold 140. The first arc-shaped plate 230 is coaxially arranged with the first end 210 and the second end 220, and the first end of the first arc-shaped plate 230 is fixedly connected to the first end 210, and the second end is fixedly connected to the second end 220.

[0075] The second arc-shaped plate 240 is coaxially arranged with the first arc-shaped plate 230, and a discharge chute for concrete passage is formed between the second arc-shaped plate 240 and the first arc-shaped plate 230. The first end of the second arc-shaped plate 240 is slidably connected to the first end 210, and the second end is slidably connected to the second end 220. Specifically, a sliding groove is provided at the opposite end of the first end 210 and the second end 220, and both ends of the second arc-shaped plate 240 are slidably inserted into the sliding groove. The second arc-shaped plate 240 has a cleaning position and a replenishing position. When the second arc-shaped plate 240 is in the cleaning position, the width of the discharge chute is larger; when the second arc-shaped plate 240 is in the replenishing position, the width of the discharge chute is smaller.

[0076] A locking structure is installed on the first end 210 and the second arc-shaped plate 240 and / or the second end 220 and the second arc-shaped plate 240. The locking structure is used to lock the second arc-shaped plate 240. Specifically, during cleaning, the locking structure locks the second arc-shaped plate 240 in the cleaning position. At this time, the width of the discharge chute is larger, thereby facilitating the cleaning of the concrete in the replenishment pipe 200. During replenishment, the locking structure locks the second arc-shaped plate 240 in the replenishment position. At this time, the width of the discharge chute is smaller. Before the replenishment pipe 200 rotates, as the concrete gradually fills the entire replenishment pipe 200 from the second end to the first end, the concrete in the replenishment pipe 200 cannot easily pass through the discharge chute, making it easier for the concrete to fill the entire replenishment pipe 200. This prevents the amount of concrete added from the second end to the first end of the replenishment pipe 200 from gradually decreasing, thereby achieving the purpose of more uniform distribution of concrete during replenishment.

[0077] like Figure 5 As shown, the locking structure includes a locking pin 251 and a first elastic element 252.

[0078] The locking pin 251 is disposed within the first end 210 or the second end 220, and is slidably connected to the first end 210 or the second end 220, so that the locking pin 251 can move radially between the locked position and the unlocked position along the first end 210 or the second end 220. The second arc-shaped plate 240 is correspondingly provided with a first locking hole 241 and a second locking hole 242. When the second arc-shaped plate 240 is in the cleaning position, the first locking hole 241 corresponds to the locking pin 251, so that the locking pin 251 can be inserted into the first locking hole 241, thereby locking the second arc-shaped plate 240 in the cleaning position; when the second arc-shaped plate 240 is in the replenishing position, the second locking hole 242 corresponds to the locking pin 251, so that the locking pin 251 can be inserted into the second locking hole 242, thereby locking the second arc-shaped plate 240 in the replenishing position.

[0079] The first elastic element 252 corresponds to the locking pin 251. The first elastic element 252 is disposed within the first end 210 or the second end 220. The first end of the first elastic element 252 is connected to the first end 210 or the second end 220, and the second end is connected to the locking pin 251. In its natural state, the first elastic element 252 applies a spring force to the locking pin 251, causing the locking pin 251 to tend to move from the unlocked position to the locked position. Specifically, the first elastic element 252 can be a gas spring, a hydraulic spring, a rubber spring, or a spring, etc. In this embodiment, the first elastic element 252 is a spring.

[0080] When locked, the locking pin 251 is held in the locked position by the elastic force of the first elastic element 252, so that the locking pin 251 passes through the first locking hole 241 or the second locking hole 242. With the cooperation of the locking pin 251 and the first locking hole 241 or the locking pin 251 and the second locking hole 242, the second arc plate 240 is locked in the cleaning position or the material replenishment position.

[0081] When unlocking, the locking pin 251 is placed in the unlocked position so that the locking pin 251 cannot engage with the first locking hole 241 or the second locking hole 242, thereby enabling the second arc plate 240 to be moved.

[0082] like Figure 3 and 5 As shown, the side wall of the first end 210 or the second end 220 is provided with an operation hole so that the operator can use a tool to push the locking pin 251 from the locked position to the unlocked position.

[0083] Preferably, the second locking hole 242 is a strip-shaped hole. Before the feeding pipe 200 rotates, the locking pin 251 is located at the first end of the second locking hole 242, and the discharge trough is small. This allows the concrete inside the feeding pipe 200 to easily pass through the discharge trough as it gradually fills the entire feeding pipe 200 from the second end to the first end. Consequently, the concrete will not enter the molding cavity before filling the entire feeding pipe 200, thus preventing the amount of concrete added from gradually decreasing from the second end to the first end. This further achieves the goal of making the concrete distribution more uniform during feeding.

[0084] During the material replenishment process, when the material replenishment pipe 200 rotates, the second arc plate 240 and the first arc plate 230 slide relative to each other due to inertia until the locking pin 251 moves from the first end to the second end of the second locking hole 242. At this time, the discharge chute is larger, so that the concrete can pass through the discharge chute.

[0085] like Figure 4 As shown, the inner diameter detection device includes a distance sensor 500, which is mounted on the feeding pipe 200. The distance sensor 500 is used to detect the distance between itself and the inner sidewall of the precast column, thereby calculating the inner diameter of the precast column. The distance sensor 500 can be any one of an ultrasonic rangefinder, a laser rangefinder, an infrared rangefinder, or a millimeter-scale radar rangefinder.

[0086] like Figure 4 As shown, the inner diameter detection device also includes a shielding structure, which includes a lens 610, a shielding slider 620, a pull rope 630, a gravity block 640, and a second elastic element 650.

[0087] Lens 610 is disposed at the signal transmitting end of distance sensor 500 and is fixedly connected to feed tube 200. Blocking slider 620 is disposed on the side of lens 610 away from distance sensor 500 and is slidably connected to feed tube 200. Blocking slider 620 has a blocking position that can block lens 610 and a avoiding position that can avoid lens 610. When blocking slider 620 is in the blocking position, it blocks lens 610 to prevent concrete from adhering to lens 610 and affecting detection. When blocking slider 620 is in the avoiding position, it moves to one side of lens 610 so that the signal from distance sensor 500 can pass through lens 610 for detection.

[0088] The gravity block 640 is slidably connected to the feeding pipe 200, allowing the gravity block 640 to move radially along the feeding pipe 200. The first end of the pull rope 630 is connected to the gravity block 640, and the second end is connected to the blocking slider 620. The first end of the second elastic element 650 is connected to the blocking slider 620, and the second end is connected to the feeding pipe 200. Specifically, the second elastic element 650 can be a gas spring, a hydraulic spring, a rubber spring, or a spring, etc. In this embodiment, the second elastic element 650 is a spring.

[0089] During testing, the gravity block 640, under the action of centrifugal force, pulls the blocking slider 620 from the blocking position to the avoidance position through the pull rope 630;

[0090] When the block is blocked, the second elastic element 650 applies a spring force to the blocking slider 620 to move the blocking slider 620 to the blocking position.

[0091] Preferably, the blocking slider 620 contacts the outer sidewall of the lens 610 so that the blocking slider 620 can clean the lens 610 during movement.

[0092] The present invention also provides a method for forming precast columns, which is used in the precast column forming assembly mold described in any of the above embodiments, and includes the following steps:

[0093] S1 calculates the amount of concrete required for the target precast column, denoted as m1.

[0094] S2, add a preset amount of concrete, denoted as m2, into the lower mold 110 containing the steel cage, where m2 < m1, so that the inner diameter of the precast column manufactured after the first centrifugal molding is smaller than the inner diameter of the target precast column.

[0095] S3, perform mold closing operation on the precast column forming combination mold. Specifically, the upper mold 120 is fastened above the lower mold 110 and bolts are used to lock the upper mold 120, the lower mold 110, the first end mold 130 and the mold body, and the second end mold 140 and the mold body.

[0096] S4, Perform the first centrifugal molding operation on the precast column forming assembly mold. Specifically, transfer the precast column forming assembly mold to a centrifuge and make the centrifuge drive the precast column forming assembly mold to rotate for the first centrifugal molding operation.

[0097] S5, the feeding device adds concrete to the molding cavity, and the centrifuge continues to perform centrifugal molding operation on the precast column molding assembly mold. At the same time, the inner diameter detection device detects the inner diameter of the precast column. When the inner diameter of the precast column is within the preset range, the precast column molding assembly mold is transferred to the steam curing equipment for steam curing treatment of the precast column.

[0098] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0099] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A precast column forming mold, comprising a mold body, a first end mold (130), and a second end mold (140), wherein the mold body includes a lower mold (110) and an upper mold (120) fastened to the lower mold (110), the first end mold (130) is disposed at the first end of the mold body, and the second end mold (140) is disposed at the second end of the mold body, wherein, The mold body, the first end mold (130), and the second end mold (140) together form a molding cavity, characterized in that it further includes: A feeding device, disposed within the molding cavity, is used to replenish concrete into the molding cavity during the second centrifugal molding process; and An inner diameter detection device is installed on the feeding device and is used to detect the inner diameter of the precast column during the second centrifugal molding process. The feeding device includes: A feeding pipe (200) is provided in the molding cavity. Its first end is rotatably connected to the first end mold (130), and its second end is rotatably connected to the second end mold (140). Its side wall is provided with a discharge groove along its axis. A connecting sleeve (300) is sleeved on the second end of the feeding pipe (200), with its first end rotatably connected to the feeding pipe (200) and its second end detachably connected to the feeding device; and The first gear (400) is sleeved on the first or second end of the feeding tube (200) and is connected to the feeding tube (200) in a transmission manner; During material replenishment, the first gear (400) drives the material replenishment pipe (200) to rotate, so as to throw the concrete in the material replenishment pipe (200) out of the discharge chute.

2. The precast column forming assembly mold according to claim 1, characterized in that, The feed pipe (200) includes: The first end (210) is cylindrical and is coaxially arranged with the first end mold (130) and rotatably connected to the first end mold (130); The second end (220) is cylindrical, hollow and open at both ends, and is coaxially arranged with the first end (210). It is rotatably connected to the second end mold (140). The first arc-shaped plate (230) is coaxially arranged with the first end (210), and its first end is fixedly connected to the first end (210) and its second end is fixedly connected to the second end (220); A second arc-shaped plate (240) is coaxially arranged with the first arc-shaped plate (230), and a discharge chute for concrete passage is formed between the second arc-shaped plate (240) and the first arc-shaped plate (230). The first end of the second arc-shaped plate (240) is slidably connected to the first end (210), and the second end is slidably connected to the second end (220). The second arc-shaped plate (240) has a cleaning position and a replenishing position. When the second arc-shaped plate (240) is in the cleaning position, the width of the discharge chute is larger; when the second arc-shaped plate (240) is in the replenishing position, the width of the discharge chute is smaller. A locking structure is provided on the first end (210) and the second arc plate (240) and / or the second end (220) and the second arc plate (240), which is used to lock the second arc plate (240).

3. The precast column forming assembly mold according to claim 2, characterized in that, The locking structure includes: A locking pin (251) is disposed within the first end (210) or the second end (220) and is slidably connected to the first end (210) or the second end (220) so that the locking pin (251) can move between a locked position and an unlocked position radially along the first end (210) or the second end (220); A first elastic element (252) corresponds to the locking pin (251), with its first end connected to the first end (210) or the second end (220) and its second end connected to the locking pin (251). In its natural state, the first elastic element (252) applies a spring force to the locking pin (251) so that the locking pin (251) tends to move from the unlocked position to the locked position. The second arc plate (240) is provided with a first locking hole (241) and a second locking hole (242). When the second arc plate (240) is in the cleaning position, the first locking hole (241) corresponds to the locking pin (251); when the second arc plate (240) is in the replenishing position, the second locking hole (242) corresponds to the locking pin (251).

4. The precast column forming assembly mold according to any one of claims 1-3, characterized in that, The inner diameter detection device includes a distance sensor (500), which is disposed on the feeding pipe (200) and is used to detect the distance between it and the inner sidewall of the precast column.

5. The precast column forming assembly mold according to claim 4, characterized in that, The inner diameter detection device further includes a shielding structure, the shielding structure comprising: A lens (610) is disposed at the signal transmitting end of the distance sensor (500) and is fixedly connected to the feed tube (200); A blocking slider (620) is disposed on the side of the lens (610) away from the distance sensor (500), and is slidably connected to the feed tube (200). It has a blocking position that can block the lens (610) and an avoidance position that can avoid the lens (610). A gravity block (640) is slidably connected to the feed pipe (200) so that it can move radially along the feed pipe (200); A pull rope (630), the first end of which is connected to the gravity block (640) and the second end of which is connected to the blocking slider (620); and The second elastic element (650) has a first end connected to the blocking slider (620) and a second end connected to the feeding tube (200); During the detection process, the gravity block (640) pulls the blocking slider (620) from the blocking position to the avoidance position through the pull rope (630) under the action of centrifugal force. When the block is blocked, the second elastic element (650) applies a spring force to the blocking slider (620) to move the blocking slider (620) to the blocking position.

6. A method for forming precast columns, using the precast column forming assembly mold as described in any one of claims 1-5, characterized in that, Includes the following steps: S1, calculate the amount of concrete required for the target precast column, denoted as m1; S2, add a preset amount of concrete, denoted as m2, into the lower mold (110) containing the steel cage, where m2 < m1; S3, Perform a mold closing operation on the precast column forming assembly mold; S4, Perform the first centrifugal molding operation on the precast column forming assembly mold; S5, the feeding device adds concrete to the molding cavity and continues to perform centrifugal molding on the precast column molding assembly mold. At the same time, the inner diameter detection device detects the inner diameter of the precast column. When the inner diameter of the precast column is within the preset range, the precast column molding assembly mold is transferred to the steam curing equipment for steam curing treatment of the precast column.

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