Prefabricated column forming combined die and forming method thereof

Abstract

The invention belongs to the technical field of prefabricated column manufacturing equipment, and provides a prefabricated column forming combined die and a forming method.The prefabricated column forming combined die comprises a die body, a first end die and a second end die, and the die body comprises a lower die and an upper die buckled on the lower die; the first-end mold is arranged at the first end of the mold main body, the second-end mold is arranged at the second end of the mold main body, the mold main body, the first-end mold and the second-end mold jointly define a forming cavity, and the material supplementing device is used for supplementing concrete into the forming cavity in the second centrifugal forming process; and the inner diameter detection device is used for detecting the inner diameter of the prefabricated column in the secondary centrifugal forming process. According to the prefabricated column forming combined mold and the forming method thereof, the accuracy of the inner diameter of a hollow column manufactured through the prefabricated column forming combined mold is high.

Description

Technical Field

[0001] The invention relates to the technical field of prefabricated column manufacturing equipment, and in particular to a prefabricated column forming combined die and a forming method thereof. Background Art

[0002] Compared with on-site casting, precast columns are widely used because they can reduce the amount of concrete and formwork used, better ensure product quality and improve construction efficiency.

[0003] Hollow columns are widely used prefabricated columns. During the manufacturing process, the mold needs to be placed on a centrifuge. The centrifuge drives the mold to rotate and uses centrifugal force to mix and flatten the concrete inside the mold into shape.

[0004] However, in the prior art, when adding concrete into the lower mold equipped with the steel cage, it is impossible to ensure that the amount of concrete added remains 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 strength of the hollow column manufactured 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 defects in the prior art, the purpose of the present invention is to provide a prefabricated column forming combined mold and a forming method thereof, so as to solve or alleviate the above-mentioned technical problems existing in the prior art.

[0006] In order to achieve the above-mentioned object, on the one hand, the present invention provides a prefabricated column forming combined mold, comprising a mold body, a first end mold and a second end mold, the mold body comprising a lower mold and an upper mold buckled on the lower mold, the first end mold is arranged at the first end of the mold body, and the second end mold is arranged at the second end of the mold body, wherein the mold body, the first end mold and the second end mold are jointly surrounded by a molding cavity, and further comprising:

[0007] a feeding device, which is arranged in the molding cavity and is used to add concrete to the molding cavity during the second centrifugal molding process; and

[0008] The inner diameter detection device is arranged on the feeding device and is used to detect the inner diameter of the prefabricated column during the second centrifugal molding process.

[0009] Furthermore, the feeding device comprises:

[0010] A feeding pipe, which is arranged in the molding cavity, has a first end rotatably connected to the first end mold, a second end rotatably connected to the second end mold, and a side wall thereof is provided with a discharge trough along its axial centerline direction;

[0011] a connecting sleeve, which is sleeved on the second end of the feeding pipe, and has a first end rotatably connected to the feeding pipe and a second end detachably connected to the feeding device; and

[0012] A first gear, which is sleeved on the first end or the second end of the feeding pipe and is drivingly connected to the feeding pipe;

[0013] When replenishing, the replenishing pipe is driven to rotate by the first gear to throw the concrete in the replenishing pipe out of the discharge trough.

[0014] Furthermore, the feeding pipe comprises:

[0015] A first end head, which is cylindrical and coaxially arranged with the first end mold and rotatably connected to the first end mold;

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

[0017] A first arc-shaped plate, which is coaxially arranged with the first end head, with a first end fixedly connected to the first end head and a second end fixedly connected to the second end head;

[0018] a second curved plate, which is coaxially arranged with the first curved plate, and the discharge trough for passing concrete is formed between the second curved plate and the first curved plate, the first end of the second curved plate is slidably connected to the first end head, and the second end is slidably connected to the second end head; the second curved plate has a cleaning position and a replenishing position, when the second curved plate is in the cleaning position, the width of the discharge trough is larger; when the second curved plate is in the replenishing position, the width of the discharge trough is smaller; and

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

[0020] Furthermore, the locking structure comprises:

[0021] a locking latch, which is disposed in the first end head or the second end head and is slidably connected to the first end head or the second end head so that the locking latch can move between a locking position and an unlocking position along the radial direction of the first end head or the second end head;

[0022] a first elastic element, which corresponds to the locking bolt, has a first end connected to the first end or the second end, and a second end connected to the locking bolt, and in a natural state, the first elastic element applies elastic force to the locking bolt so that the locking bolt has a tendency to move from an unlocking position to a locking position;

[0023] Among them, the second arc plate is correspondingly provided with a first locking hole and a second locking hole. When the second arc plate is in the cleaning position, the first locking hole corresponds to the locking pin; when the second arc plate is in the filling position, the second locking hole corresponds to the locking pin.

[0024] Furthermore, the inner diameter detection device includes a distance sensor, which is arranged on the feeding pipe and is used to detect the distance between the distance sensor and the inner side wall of the prefabricated column.

[0025] Furthermore, the inner diameter detection device further includes a shielding structure, and the shielding structure includes:

[0026] A lens, which is arranged at the signal transmitting end of the distance sensor and is fixedly connected to the feeding tube;

[0027] A shielding slider, which is arranged on a side of the lens away from the distance sensor, is slidably connected to the feeding tube, and has a shielding position capable of shielding the lens and a avoiding position capable of avoiding the lens;

[0028] A gravity block is slidably connected to the feeding pipe so as to be able to move radially along the feeding pipe;

[0029] a pull rope, a first end of which is connected to the gravity block, and a second end of which is connected to the shielding sliding block; and

[0030] A second elastic element, a first end of which is connected to the shielding slider and a second end of which is connected to the feeding pipe;

[0031] Wherein, during the detection, the gravity block, under the action of centrifugal force, pulls the shielding sliding block from the shielding position to the avoiding position through the pull rope;

[0032] During shielding, the second elastic element applies elastic force to the shielding slider to move the shielding slider to the shielding position.

[0033] On the other hand, the present invention further provides a prefabricated column forming method, which is used for any of the prefabricated column forming combined molds described above, comprising the following steps:

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

[0035] S2, adding a preset amount of concrete into the lower mold equipped with the steel cage, denoted as m2, wherein m2<m1;

[0036] S3, performing a mold closing operation on the prefabricated column forming combined mold;

[0037] S4, performing a first centrifugal molding operation on the prefabricated column molding assembly mold;

[0038] S5, the feeding device adds concrete to the forming cavity and continues to perform centrifugal forming operation on the precast column forming 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 a preset range, the precast column forming assembly mold is transferred to the steaming equipment to perform steaming treatment on the precast column.

[0039] Beneficial effects of the present invention:

[0040] The prefabricated column forming combined mold and forming method provided by the present invention, by providing a feeding device and an inner diameter detection device, after the first centrifugal forming, concrete is added to the forming cavity by the feeding device, and the inner diameter of the prefabricated column is detected by the inner diameter detection device, thereby achieving the purpose of improving the accuracy of the inner diameter of the manufactured hollow column. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. 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 according to the actual scale.

[0042] Figure 1 An exploded three-dimensional view of a prefabricated column forming assembly mold provided by an embodiment of the present invention;

[0043] Figure 2 for Figure 1 A three-dimensional view of a feeding device of a prefabricated column forming assembly mold shown;

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

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

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

[0047] Figure 6 for Figure 2 A three-dimensional view of a second curved plate of a feeding pipe of the feeding device shown;

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

[0049] Reference numerals:

[0050] 110, lower mold; 120, upper mold; 130, first end mold; 140, second end mold; 200, feeding tube; 210, first end head; 220, second end head; 230, first arc plate; 240, second arc plate; 241, first locking socket; 242, second locking socket; 251, locking pin; 252, first elastic element; 300, connecting sleeve; 400, first gear; 500, distance sensor; 610, lens; 620, shielding slider; 630, pull rope; 640, gravity block; 650, second elastic element. DETAILED DESCRIPTION

[0051] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0052] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0053] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0054] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In the description of the present invention, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0055] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0057] like Figure 1 As shown, a prefabricated column forming combined 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 buckled above the lower mold 110 and is detachably connected to the lower mold 110 by bolts, the first end mold 130 is arranged at the first end of the mold body and is detachably connected to the mold body by bolts, and the second end mold 140 is arranged at the second end of the mold body and is detachably connected to the mold body by bolts. The mold body, the first end mold 130 and the second end mold 140 are jointly arranged to form a molding cavity. These are all existing technologies and will not be described in detail here.

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

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

[0061] Among them, 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 prefabricated column during the second centrifugal molding process.

[0062] Specifically, assuming that the amount of concrete required for the target precast column to be manufactured is m1, firstly, a preset amount of concrete is added into the lower mold 110 equipped with the steel cage, which is recorded as m2, and m2<m1, so that the inner diameter of the precast column manufactured after the first centrifugal molding is always larger than the inner diameter of the target precast column; then, the mold is closed, that is, the upper mold 120 is buckled on 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; Afterwards, the entire prefabricated column forming assembly mold is transferred to the centrifuge to perform the first centrifugal forming operation; then, concrete is added to the forming cavity through the feeding device. At the same time, the centrifuge drives the prefabricated column forming assembly mold to rotate to perform the second centrifugal forming operation. During this process, the inner diameter detection device detects the inner diameter of the prefabricated column. When the inner diameter detection device detects that the inner diameter of the prefabricated column is within a preset range (i.e., within the allowable error range of the target prefabricated column), the prefabricated column forming assembly mold is transferred to the steaming equipment to steam the prefabricated column.

[0063] The prefabricated column forming combined mold provided by the present invention is provided with a feeding device and an inner diameter detection device. After the first centrifugal forming, concrete is added to the forming cavity through the feeding device, and the inner diameter of the prefabricated column is detected by the inner diameter detection device, 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] The feeding pipe 200 is arranged in the molding cavity, the first end of the feeding pipe 200 is rotatably connected to the first end mold 130, the second end is rotatably connected to the second end mold 140, and the side wall of the feeding pipe 200 is provided with a discharge groove along the axial direction thereof. The 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, and the second end is detachably connected to the feeding device.

[0066] The first gear 400 is sleeved on the first end or the second end of the feeding pipe 200. In this embodiment, the first gear 400 is arranged at the first end of the feeding pipe 200. The first gear 400 is in transmission connection with the feeding pipe 200, so that power can be transmitted to the feeding pipe 200 through the first gear 400, thereby driving the feeding pipe 200 to rotate. When feeding, the feeding pipe 200 is driven to rotate by the first gear 400, so that the concrete in the feeding pipe 200 is thrown out from the discharge trough.

[0067] The feeding device includes a machine body, a material storage box and a screw conveyor arranged on the machine body. The material storage box is funnel-shaped, the feeding end of the screw conveyor is connected and communicated with the material discharge port of the material storage box, and the material discharge end is detachably connected to the second end of the connecting sleeve 300 (for example: threaded connection, clamping connection, sleeve connection, etc.).

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

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

[0070] After the first clutch molding, the feeding device and the second motor are started, so that the feeding device transports concrete into the feeding pipe 200. The concrete transported into the feeding pipe 200 enters the molding cavity from the discharge trough of the feeding pipe 200 under the action of centrifugal force. During this process, the centrifuge continues to drive the prefabricated column molding combination mold to rotate, thereby performing a second centrifugal molding operation.

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

[0072] Since the feeding pipe 200 is long, if the feeding device continues to transport concrete into the feeding pipe 200 during the rotation of the feeding pipe 200, it is inevitable that the closer to the feeding end of the feeding pipe 200, the more concrete is added to the molding cavity. Therefore, preferably, the feeding pipe 200 adds concrete to the molding cavity by feeding in batches. Specifically, first, the feeding device transports concrete into the feeding pipe 200 so that the concrete fills the entire feeding pipe 200. After the feeding pipe 200 is full of concrete, the feeding device stops transporting concrete into the feeding pipe 200 and drives the feeding pipe 200 to rotate, so as to achieve the purpose of adding concrete to the molding cavity. That is, during the rotation of the feeding pipe 200, the feeding device will not continue to transport concrete into the feeding pipe 200. After all the concrete in the feeding pipe 200 is added into the molding cavity, the conveying device will continue to transport concrete into the feeding pipe 200, so as to achieve the purpose of making the added concrete more evenly distributed in the molding cavity.

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

[0074] The first end 210 is cylindrical, and is coaxially arranged with the first end mold 130, and the first end 210 is rotatably connected with the first end mold 130. The second end 220 is cylindrical, and the second end 220 is hollow and has two ends open, and the second end 220 is coaxially arranged with the first end 210, and the second end 220 is rotatably connected with the second end mold 140. The first curved plate 230 is coaxially arranged with the first end 210 and the second end 220, and the first end of the first curved plate 230 is fixedly connected with the first end 210, and the second end is fixedly connected with the second end 220.

[0075] The second curved plate 240 is coaxially arranged with the first curved plate 230, and a discharge trough for concrete to pass through is formed between the second curved plate 240 and the first curved plate 230. The first end of the second curved plate 240 is slidably connected to the first end 210, and the second end is slidably connected to the second end 220. Specifically, a slide groove is provided at the opposite ends of the first end 210 and the second end 220, and the two ends of the second curved plate 240 are slidably inserted in the slide groove. The second curved plate 240 has a cleaning position and a filling position. When the second curved plate 240 is in the cleaning position, the width of the discharge trough is larger; when the second curved plate 240 is in the filling position, the width of the discharge trough is smaller.

[0076] The locking structure is arranged on the first end 210 and the second curved plate 240 and / or the second end 220 and the second curved plate 240, and the locking structure is used to lock the second curved plate 240. Specifically, when cleaning, the locking structure locks the second curved plate 240 in the cleaning position, at which time the width of the discharge trough is large, thereby achieving the purpose of facilitating the cleaning of the concrete in the feeding pipe 200; when filling, the locking structure locks the second curved plate 240 in the filling position, at which time the width of the discharge trough is small, and before the feeding pipe 200 rotates, the concrete gradually fills the entire feeding pipe 200 from the second end to the first end of the feeding pipe 200, and the concrete in the feeding pipe 200 cannot easily pass through the discharge trough, making it easier for the concrete to fill the entire feeding pipe 200, without causing the added concrete to gradually decrease from the second end to the first end of the feeding pipe 200, thereby achieving the purpose of making the concrete during filling more evenly distributed.

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

[0078] The locking latch 251 is disposed in the first end 210 or the second end 220, and the locking latch 251 is slidably connected to the first end 210 or the second end 220, so that the locking latch 251 can move between the locking position and the unlocking position along the radial direction of the first end 210 or the second end 220. The second arc plate 240 is correspondingly provided with a first locking socket 241 and a second locking socket 242. When the second arc plate 240 is in the cleaning position, the first locking socket 241 corresponds to the locking latch 251, so that the locking latch 251 can be inserted into the first locking socket 241, thereby locking the second arc plate 240 in the cleaning position; when the second arc plate 240 is in the feeding position, the second locking socket 242 corresponds to the locking latch 251, so that the locking latch 251 can be inserted into the second locking socket 242, thereby locking the second arc plate 240 in the feeding position.

[0079] The first elastic element 252 corresponds to the locking bolt 251, and the first elastic element 252 is disposed in the first terminal 210 or the second terminal 220. The first end of the first elastic element 252 is connected to the first terminal 210 or the second terminal 220, and the second end is connected to the locking bolt 251. In the natural state, the first elastic element 252 applies elastic force to the locking bolt 251, so that the locking bolt 251 has a tendency to move from the unlocking position to the locking position. Specifically, the first elastic element 252 can be a gas spring, a hydraulic spring, a rubber spring, a spring, etc. In this embodiment, the first elastic element 252 is a spring.

[0080] When locking, under the action of the elastic force of the first elastic element 252, the locking pin 251 is maintained in the locking position, so that the locking pin 251 passes through the first locking hole 241 or the second locking hole 242. With the mutual cooperation between the locking pin 251 and the first locking hole 241 or the locking pin 251 and the second locking hole 242, the purpose of locking the second arc plate 240 in the cleaning position or the feeding position is achieved.

[0081] When unlocking, the locking pin 251 is placed in the unlocking position so that the locking pin 251 cannot be matched with the first locking hole 241 or the second locking hole 242, thereby achieving the purpose of moving the second arc plate 240.

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

[0083] Preferably, the second locking hole 242 is a bar-shaped hole. Before the feeding tube 200 rotates, the locking pin 251 is at the first end of the second locking hole 242, and the discharge groove is small, so that in the process of concrete gradually filling the entire feeding tube 200 from the second end to the first end of the feeding tube 200, the concrete in the feeding tube 200 cannot easily pass through the discharge groove, and thus the concrete will not enter the forming cavity before filling the entire feeding tube 200, so that the added concrete will not gradually decrease from the second end to the first end of the feeding tube 200, thereby achieving the purpose of further making the concrete during feeding more evenly distributed.

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

[0085] like Figure 4 As shown, the inner diameter detection device includes a distance sensor 500, which is arranged on the feeding pipe 200. The distance sensor 500 is used to detect the distance between the distance sensor 500 and the inner side wall of the prefabricated column, so as to calculate the inner diameter of the prefabricated column. The distance sensor 500 can be any one of an ultrasonic distance sensor, a laser distance sensor, an infrared distance sensor, a millimeter radar distance sensor, etc.

[0086] like Figure 4 As shown, the inner diameter detection device further 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] The lens 610 is arranged at the signal transmitting end of the distance sensor 500, and the lens 610 is fixedly connected to the feeding tube 200. The shielding slider 620 is arranged on the side of the lens 610 away from the distance sensor 500, and the shielding slider 620 is slidably connected to the feeding tube 200. The shielding slider 620 has a shielding position capable of shielding the lens 610 and a avoiding position capable of avoiding the lens 610, wherein when the shielding slider 620 is in the shielding position, the shielding slider 620 can shield the lens 610 to prevent concrete from adhering to the lens 610 and affecting detection; when the shielding slider 620 is in the avoiding position, the shielding slider 620 moves to one side of the lens 610, so that the signal of the distance sensor 500 can pass through the lens 610, thereby performing detection.

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

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

[0090] During shielding, the second elastic element 650 applies elastic force to the shielding slider 620 to move the shielding slider 620 to the shielding position.

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

[0092] The present invention further provides a prefabricated column forming method, which is used in the prefabricated column forming combined mold described in any of the above embodiments, and comprises the following steps:

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

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

[0095] S3, the prefabricated column forming combined mold is closed. Specifically, the upper mold 120 is buckled above the lower mold 110 and 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 are locked by bolts.

[0096] S4, performing a first centrifugal molding operation on the prefabricated column molding assembly mold. Specifically, the prefabricated column molding assembly mold is transferred to a centrifuge, and the centrifuge drives the prefabricated column molding assembly mold to rotate to perform the first centrifugal molding operation.

[0097] S5, the feeding device adds concrete to the molding cavity, and the centrifuge continues to perform centrifugal molding operations 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 a preset range, the precast column molding assembly mold is transferred to the steaming equipment to perform steaming treatment on the precast column.

[0098] In the description of the present invention, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0099] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A prefabricated column forming combined mold, comprising a mold body, a first end mold (130) and a second end mold (140), wherein the mold body comprises a lower mold (110) and an upper mold (120) buckled on the lower mold (110), the first end mold (130) is arranged at the first end of the mold body, and the second end mold (140) is arranged at the second end of the mold body, wherein: The mold body, the first end mold (130) and the second end mold (140) are jointly arranged to form a molding cavity, and the mold is characterized by further comprising: a feeding device, which is arranged in the molding cavity and is used to add concrete to the molding cavity during the second centrifugal molding process; and The inner diameter detection device is arranged on the feeding device and is used to detect the inner diameter of the prefabricated column during the second centrifugal forming process.

2. The prefabricated column forming combined mold according to claim 1, characterized in that: The feeding device comprises: A feeding pipe (200) is arranged in the molding cavity, a first end of which is rotatably connected to the first end mold (130), and a second end of which is rotatably connected to the second end mold (140), and a side wall of which is provided with a discharge groove along its axial centerline direction; a connecting sleeve (300), which is sleeved on the second end of the feeding pipe (200), and has a first end rotatably connected to the feeding pipe (200) and a second end detachably connected to the feeding device; and A first gear (400), which is sleeved on the first end or the second end of the feed feeding pipe (200) and is drivingly connected to the feed feeding pipe (200); When replenishing, the replenishing pipe (200) is driven to rotate by the first gear (400) so as to throw the concrete in the replenishing pipe (200) out of the discharge trough.

3. The prefabricated column forming combined mold according to claim 2, characterized in that: The feeding pipe (200) comprises: A first end head (210) is cylindrical and is coaxially arranged with the first end mold (130) and rotatably connected to the first end mold (130); A second end head (220) is cylindrical, hollow and open at both ends, coaxially arranged with the first end head (210), and rotatably connected to the second end mold (140); A first arc-shaped plate (230), which is coaxially arranged with the first end head (210), with a first end fixedly connected to the first end head (210) and a second end fixedly connected to the second end head (220); a second curved plate (240) which is coaxially arranged with the first curved plate (230), and a discharge trough for passing concrete is formed between the second curved plate (240) and the first curved plate (230), the first end of the second curved plate (240) being slidably connected to the first end head (210), and the second end of the second curved plate (240) being slidably connected to the second end head (220); the second curved plate (240) having a cleaning position and a replenishing position, when the second curved plate (240) is in the cleaning position, the width of the discharge trough is larger; when the second curved plate (240) is in the replenishing position, the width of the discharge trough is smaller; and A locking structure is provided on the first end head (210) and the second curved plate (240) and / or the second end head (220) and the second curved plate (240), and is used to lock the second curved plate (240).

4. The prefabricated column forming combined mold according to claim 3, characterized in that: The locking structure comprises: a locking latch (251), which is arranged in the first end head (210) or the second end head (220), and is slidably connected to the first end head (210) or the second end head (220), so that the locking latch (251) can move between a locking position and an unlocking position along the radial direction of the first end head (210) or the second end head (220); a first elastic element (252), corresponding to the locking pin (251), with a first end connected to the first end (210) or the second end (220), and a second end connected to the locking pin (251), and in a natural state, the first elastic element (252) applies elastic force to the locking pin (251), so that the locking pin (251) has a tendency to move from an unlocking position to a locking position; 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 a cleaning position, the first locking hole (241) corresponds to the locking pin (251); when the second arc-shaped plate (240) is in a filling position, the second locking hole (242) corresponds to the locking pin (251).

5. The prefabricated column forming combined mold according to any one of claims 1 to 4, characterized in that: The inner diameter detection device comprises a distance sensor (500), wherein the distance sensor (500) is arranged on the feeding pipe (200), and the distance sensor (500) is used to detect the distance between the distance sensor and the inner side wall of the prefabricated column.

6. The prefabricated column forming combined mold according to claim 5, characterized in that: The inner diameter detection device further includes a shielding structure, and the shielding structure includes: A lens (610) is arranged at the signal transmitting end of the distance sensor (500) and is fixedly connected to the feeding tube (200); a shielding slider (620), which is arranged on a side of the lens (610) away from the distance sensor (500), is slidably connected to the feeding tube (200), and has a shielding position capable of shielding the lens (610) and a avoiding position capable of avoiding the lens (610); a gravity block (640) which is slidably connected to the feeding tube (200) so as to be able to move in the radial direction of the feeding tube (200); a pull rope (630), a first end of which is connected to the gravity block (640) and a second end of which is connected to the shielding sliding block (620); and a second elastic element (650), a first end of which is connected to the shielding slider (620) and a second end of which is connected to the feeding pipe (200); During the detection, the gravity block (640) pulls the shielding sliding block (620) from the shielding position to the avoiding position through the pull rope (630) under the action of centrifugal force; When shielding, the second elastic element (650) applies elastic force to the shielding slider (620) to move the shielding slider (620) to the shielding position.

7. A method for forming a prefabricated column, which is used for the prefabricated column forming assembly mold according to any one of claims 1 to 6, characterized in that: The steps include: S1, calculate the amount of concrete required for the target precast column, recorded as m1; S2, adding a preset amount of concrete into the lower mold (110) equipped with the steel cage, denoted as m2, wherein m2<m1; S3, performing a mold closing operation on the prefabricated column forming combined mold; S4, performing a first centrifugal molding operation on the prefabricated column molding assembly mold; S5, the feeding device adds concrete to the forming cavity and continues to perform centrifugal forming operation on the precast column forming 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 a preset range, the precast column forming assembly mold is transferred to the steaming equipment to perform steaming treatment on the precast column.

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