A precast beam forming mold
By introducing inclined plate transmission components and movable modules into the precast beam forming mold, the problems of inconvenient demolding and monotonous shape were solved, and efficient production and rapid demolding of various types of precast beams were realized.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINING JINQIAO PREFABRICATED BRIDGE LARGE COMPONENTS CO LTD
- Filing Date
- 2025-06-05
- Publication Date
- 2026-06-23
AI Technical Summary
Existing precast beam forming molds are inconvenient to demold, have a single shape, and have a limited range of applications, making it difficult to meet the production needs of various types of precast beams.
A precast beam forming mold was designed. By setting an inclined plate transmission assembly, the top mold module, bottom mold combination mold or side mold module can be brought together or separated during demolding. Combined with the shape adjustment characteristics of the movable module, it can meet the production needs of various types of precast beams.
It significantly improves the production efficiency of precast beams, enables the production of multiple types of precast beams, expands the applicability of the device, and achieves rapid demolding by accelerating concrete settling and using a vibrating motor to accelerate concrete settling and using slight vibration to assist demolding.
Smart Images

Figure CN224391445U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of precast beam forming mold technology, specifically a precast beam forming mold. Background Technology
[0002] Precast beams are concrete or prestressed concrete beam components manufactured in factories and then assembled on-site through hoisting. Their core advantages lie in standardized production, controllable quality, and efficient construction, making them widely used in bridges, factories, and high-rise buildings. However, the forming process of precast beams often utilizes molds, where concrete is poured and molded. Existing molds, however, suffer from drawbacks such as inconvenient demolding, and their casting cavities are often rectangular, resulting in precast beams with limited form and applicability. Therefore, this paper proposes a precast beam forming mold. Utility Model Content
[0003] The purpose of this utility model is to provide a precast beam forming mold. This mold, through the setting of the inclined plate transmission component, simultaneously realizes the gathering or separation process of the side mold assembly during the top mold assembly, bottom mold assembly, or demolding process, thereby significantly improving the production efficiency of precast beams. In addition, the movable module has shape adjustment characteristics, which further meet the production of various types of precast beams and improves the applicability of the device.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a precast beam forming mold, comprising: a U-shaped frame; a top mold module and a bottom mold module disposed on and below the U-shaped frame; and a side mold module sleeved on the bottom mold module; the side mold module includes a longitudinally movable U-shaped frame, the U-shaped frame being sleeved on the bottom mold module through a rectangular groove in its middle; a movable module and two end plates disposed on the U-shaped frame; and an inclined plate transmission assembly disposed on the top mold module, wherein when the top mold module and the bottom mold module are assembled, the inclined plate transmission assembly drives the movable module to move horizontally, so that the top mold module, the bottom mold module, the movable module, and the U-shaped frame together form a rectangular casting cavity, and the two end plates are disposed at both ends of the U-shaped frame and serve as seals at the ends of the rectangular casting cavity.
[0005] Preferably, two first cylinders are fixed at the bottom of the U-shaped frame, and the two first cylinders are placed on both sides of the bottom mold module; each first cylinder has a first telescopic column at its output end, and the first telescopic column is fixedly connected to the bottom of the U-shaped frame.
[0006] Preferably, the active module includes a module body disposed inside the U-shaped frame, wherein a slotted mold is provided on one side of the module body near the bottom mold module, and a sliding groove is provided on the other side; and a limiting rod is fixed on the side of the U-shaped frame away from the bottom mold module, and the limiting rod extends into the sliding groove and is slidably installed with the sliding groove.
[0007] Preferably, the slotting mold includes: a horizontal slot formed on the side wall of the module body, wherein an insert plate is provided in the horizontal slot and an insertion hole is formed on the insert plate; and a vertical slot formed on the top of the module body and communicating with the horizontal slot, wherein a pin is provided in the vertical slot, and when the pin is passed through the vertical slot and inserted into the insertion hole of the insert plate, it is used to fix the position of the insert plate.
[0008] Preferably, the bottom mold module includes: a support fixed to the bottom of the U-shaped frame, a first U-shaped frame through a rectangular groove fixed to the top of the support; and a second telescopic column built into the first U-shaped frame, wherein the bottom end of the second telescopic column passes through a first through hole opened at the bottom of the first U-shaped frame and is connected to the output end of a second cylinder provided in the support, and a bottom template assembly is provided at its top end. When the second telescopic column extends and retracts and drives the bottom template assembly to move longitudinally, it is used to adjust the shape of the bottom wall of the rectangular casting cavity.
[0009] Preferably, the bottom template assembly includes a second U-shaped frame fixed to the telescopic end of the second telescopic column, a vibration motor is provided at the bottom of the second U-shaped frame, and a vibration plate is provided at the output end of the vibration motor and flush with the top of the second U-shaped frame.
[0010] Preferably, the top mold module includes a third cylinder and a fourth cylinder disposed on the top of the C-shaped frame. The output ends of the third cylinder and the fourth cylinder pass through a second through hole opened on the C-shaped frame and are connected to a third telescopic column and a fourth telescopic column, respectively. The telescopic end of the third telescopic column is fixed with a top plate, and the top plate is provided with a through groove corresponding to the bottom mold module. The module also includes a top block fixed to the telescopic end of the fourth telescopic column and adapted to be inserted into the through groove.
[0011] Preferably, the inclined plate transmission assembly includes an inclined plate body fixed on the top plate; the module body has an inclined groove corresponding to the inclined plate body; and wedge surfaces and wedge blocks are respectively disposed on the inclined groove and the side of the top plate near the limiting rod, and the wedge surfaces and wedge blocks are adapted to fit together.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0013] This invention utilizes a slanted plate transmission assembly to simultaneously achieve the gathering or separation of side mold modules during the top mold module, bottom mold module combination, or demolding process, significantly improving the production efficiency of precast beams. Furthermore, the adjustable shape characteristics of the movable module further meet the production needs of various types of precast beams, expanding the applicability of the device.
[0014] In another embodiment of this utility model, the first U-shaped frame extends into the rectangular groove, and one end of the second telescopic column inside it is connected to the second cylinder. The bottom template assembly at the other end can be built into or extend out of the first U-shaped frame, so as to switch between the bottom wall of the groove or the bottom wall of the protrusion of the precast beam, thereby meeting the different processing requirements of the precast beam.
[0015] In another embodiment of this utility model, the bottom template assembly not only serves as an adjustable bottom wall of the pouring cavity, but also a vibration motor is installed between the second U-shaped frame and the vibrating plate to realize the small-amplitude vibration process of the vibrating plate. This design can accelerate the settling of concrete during the pouring process, and during the demolding process, as the top mold assembly moves upward and the side mold assembly moves outward and downward, the slight vibration of the vibrating plate during this process can cause the precast beam to separate from the bottom template assembly, further realizing the rapid demolding operation of the bottom wall of the precast beam. Attached Figure Description
[0016] Figure 1 This is a first-view perspective three-dimensional structural diagram of the first state of this utility model;
[0017] Figure 2 This is a second-view perspective three-dimensional structural diagram of the first state of this utility model;
[0018] Figure 3 This is a side view of the structure of the present invention in its first state;
[0019] Figure 4 This is a schematic diagram of the cross-sectional structure of DD;
[0020] Figure 5 This is a schematic diagram of the cross-sectional structure of EE;
[0021] Figure 6 This is a three-dimensional structural diagram of the second state of this utility model.
[0022] In the diagram: 111, U-shaped frame; 112, support; 113, first U-shaped frame; 114, second U-shaped frame; 115, second telescopic column; 116, vibrating plate; 117, vibrating motor; 118, first cylinder; 119, rectangular groove; 120, U-shaped frame; 121, module body; 122, insert plate; 123, limit rod; 124, third cylinder; 125, third telescopic column; 126, top plate; 127, inclined plate body; 128, inclined groove; 129, through groove; 130, fourth cylinder; 131, fourth telescopic column; 132, top block; 133, pin. Detailed Implementation
[0023] In the description of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," 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 this utility model and simplifying the description, and do not 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 this utility model. The various embodiments of this utility model are described in detail below with reference to the accompanying drawings.
[0024] Please see Figures 1 to 6 The present invention preferably provides the following technical solution: a precast beam forming mold, comprising: a U-shaped frame 111; a top mold module and a bottom mold module disposed on and below the U-shaped frame 111, and a side mold module sleeved on the bottom mold module; the side mold module includes a longitudinally movable U-shaped frame 120, the U-shaped frame 120 being sleeved on the bottom mold module through a rectangular groove 119 opened in its middle; a movable module and two end plates disposed on the U-shaped frame 120; and an inclined plate transmission assembly disposed on the top mold module. When the top mold module and the bottom mold module are combined, the inclined plate transmission assembly drives the movable module to move horizontally, so that the top mold module, the bottom mold module, the movable module, and the U-shaped frame 120 together form a rectangular casting cavity. The two end plates are disposed at both ends of the U-shaped frame 120 and serve as seals at the ends of the rectangular casting cavity.
[0025] The precast beam forming mold provided in this application consists of a top mold module, a bottom mold module, and a side mold module fitted on the bottom mold module. The U-shaped frame 120 where the side mold module is located has the characteristic of longitudinal movement. The movable module inside the U-shaped frame 120 can move relative to the bottom mold module to realize the expansion or contraction of the left and right side walls of the rectangular casting cavity. The two end plates that constitute the front and rear side walls of the rectangular casting cavity are fixed to the U-shaped frame 120 to complete the overlap of the four walls of the casting cavity.
[0026] To improve demolding efficiency, the various structures in this application feature efficient connection operations, specifically combined... Figure 4 , 5 As shown, this application provides an inclined plate transmission assembly on the top mold module. When the top mold module and the bottom mold module are combined, the top mold module, under the action of the inclined plate transmission assembly, drives the movable module to approach the bottom mold module and complete the overlap of the pouring cavity. Then, slurry is poured. After the precast beam is formed, while driving the top mold module and the bottom mold module to separate, the inclined plate transmission assembly can simultaneously drive the movable module away from the formed precast beam, thereby realizing the demolding of the top and sides of the precast beam.
[0027] Because the U-shaped frame 120 has the characteristic of longitudinal movement, the precast beam can be placed on the bottom formwork module alone. At this time, under the structural characteristics of the bottom formwork module, the overall demolding process of the precast beam can be realized.
[0028] In order to broaden its applicability, this application provides an active module with shape adjustment capabilities to meet the diverse needs of precast beam production, such as perforated precast beams and rectangular columnar precast beams.
[0029] Furthermore, two first cylinders 118 are fixed at the bottom of the U-shaped frame 111, and the two first cylinders 118 are placed on both sides of the bottom mold module; each first cylinder 118 has a first telescopic column at its output end, and the first telescopic column is fixedly connected to the bottom of the U-shaped frame 120.
[0030] Combination Figure 1-6 As shown, the two first cylinders 118 are placed on both sides of the bottom mold module and connected to the U-shaped frame 120 through the first telescopic column, so as to realize the longitudinal movement of the U-shaped frame 120.
[0031] Furthermore, the active module includes: a module body 121 disposed inside the U-shaped frame 120, wherein a slotting mold is provided on one side of the module body 121 near the bottom mold module, and a sliding groove is provided on the other side; and a limiting rod 123 fixed to the side of the U-shaped frame 120 away from the bottom mold module, and the limiting rod 123 extends into the sliding groove and is slidably installed with the sliding groove; further, the slotting mold includes a horizontal groove opened on the side wall of the module body 121, an insert plate 122 disposed in the horizontal groove, and an insertion hole opened on the insert plate 122; and a vertical groove opened on the top of the module body 121 and communicating with the horizontal groove, and a pin 133 disposed in the vertical groove, which is used to fix the position of the insert plate 122 when the pin 133 passes through the vertical groove and is inserted into the insertion hole of the insert plate 122.
[0032] Combination Figure 4 , 6 As shown, the module body 121 is placed inside the U-shaped frame 120, and the sliding groove on one side of it is slidably installed with the limiting rod 123 set on the U-shaped frame 120 on the same side, so as to limit the movement direction of the module body 121. The slotted mold set on the other side realizes the change of the rectangular casting cavity shape. It is worth noting that the insert plate 122 is detachably installed with the module body 121, so as to realize the replacement operation of the insert plate 122. When it is necessary to cast a precast beam with holes, grooves or built-in steel bars, the appropriate insert plate 122 can be selected. For example, for the pre-setting of steel bars, the insert plate 122 with holes is selected, and then the steel bars are inserted into the holes. When the concrete is poured, the concrete can wrap the steel bars. When the movable module moves towards the limiting rod 123, several steel bars can be separated from the insert plate 122. The insert plate 122 is simple to manufacture, and the specific manufacturing process will not be described in detail.
[0033] Example 2
[0034] As another embodiment of this utility model, the bottom mold module includes: a support 112 fixed to the bottom of the U-shaped frame 111, a first U-shaped frame 113 through the rectangular groove 119 fixed to the top of the support 112; and a second telescopic column 115 built into the first U-shaped frame 113, wherein the bottom end of the second telescopic column 115 passes through the first through hole opened at the bottom of the first U-shaped frame 113 and is connected to the output end of the second cylinder provided in the support 112, and a bottom mold assembly is provided at its top end. When the second telescopic column 115 extends and retracts and drives the bottom mold assembly to move longitudinally, it is used to adjust the shape of the bottom wall of the rectangular casting cavity.
[0035] Combination Figure 4 , 5 As shown in Figure 6, considering the variety of precast beam shapes, the first U-shaped frame 113 provided in this application extends into the rectangular groove 119, and one end of the second telescopic column 115 provided inside it is connected to the second cylinder, while the bottom template assembly provided at the other end can be built into or extend out of the first U-shaped frame 113, thereby realizing the switching between the bottom wall of the groove or the bottom wall of the protrusion of the precast beam, thus meeting the different processing requirements of the precast beam.
[0036] Example 3
[0037] As another embodiment of the present invention, the bottom template assembly includes: a second U-shaped frame 114 fixed to the telescopic end of the second telescopic column 115, a vibration motor 117 disposed at the bottom of the second U-shaped frame 114, and a vibration plate 116 disposed at the output end of the vibration motor 117 and flush with the top of the second U-shaped frame 114.
[0038] Combination Figure 4 As shown, the bottom template assembly provided in this application not only serves as an adjustable bottom wall of the pouring cavity, but also the vibration motor 117 provided between the second U-shaped frame 114 and the vibration plate 116 enables the vibration plate 116 to vibrate slightly. This design can accelerate the settling of concrete during the pouring process. During the demolding process, as the top mold assembly moves upward and the side mold assembly moves outward and downward, the slight vibration of the vibration plate 116 during this process can cause the precast beam to separate from the bottom template assembly, further realizing the rapid demolding operation of the bottom wall of the precast beam.
[0039] Furthermore, the top mold module includes: a third cylinder 124 and a fourth cylinder 130 disposed on the top of the C-shaped frame 111. The output ends of the third cylinder 124 and the fourth cylinder 130 pass through the second through hole opened on the C-shaped frame 111 and are connected to the third telescopic column 125 and the fourth telescopic column 131, respectively. The telescopic end of the third telescopic column 125 is fixed with a top plate 126, and the top plate 126 is provided with a through groove 129 corresponding to the bottom mold module. The top block 132 is fixed to the telescopic end of the fourth telescopic column 131 and is adapted to be inserted into the through groove 129. Furthermore, the inclined plate transmission assembly includes an inclined plate body 127 fixed on the top plate 126. The module body 121 is provided with an inclined groove 128 corresponding to the inclined plate body 127. The wedge surface and the wedge block are respectively disposed on the side of the inclined groove 128 and the top plate 126 near the limiting rod 123, and the wedge surface and the wedge block are adapted to fit together.
[0040] The third cylinder 124 and the fourth cylinder 130 in this application are connected to the top plate 126 and the top block 132 respectively via the third telescopic column 125 and the fourth telescopic column 131. The top plate 126 has a through groove 129 aligned with the top block 132 and the bottom mold assembly. Simultaneously, the inclined plate body 127 on the top plate 126 is fitted and inserted into the inclined groove 128 on the module body 121. Therefore, when the third telescopic column 125 moves downwards, i.e., when the top plate 126 moves towards the bottom mold assembly, the inclined plate body 127 and the wedge block respectively push the inclined groove 128 and the wedge surface connected to it, realizing the lateral movement of the module body 121 towards the bottom mold assembly, thus partially establishing the rectangular casting cavity. Since the through groove 129 is completely closed, concrete slurry can be injected into the casting cavity through the through groove 129. The vibrating motor 117 operates, reducing mud air bubbles. Figure 4 As shown, after the pouring is completed, the fourth cylinder 130 is driven to run, and the top block 132 is embedded inside the through groove 129, completing the establishment of the pouring cavity. After the precast beam is formed, the top block 132 first moves upward and resets, and then the third telescopic column 125 drives the top plate 126 to detach from the precast beam, realizing the demolding of the top of the precast beam. During the demolding process of the top of the precast beam, the inclined plate body 127 resets and pushes the module body 121 as follows. Figure 4 The cylinder moves to the left, and the first cylinder 118 then operates, causing the U-shaped frame 120 and the module body 121 to move downward, thereby achieving demolding of the precast beam sidewall. During the aforementioned process, the vibrating plate 116 vibrates synchronously, further achieving its separation from the bottom of the precast beam. Because the various structures are well connected in this process, the demolding quality is high while significantly accelerating the processing efficiency.
[0041] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" 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; they can refer to a direct connection or an indirect connection through an intermediate medium. Among these, there are various methods of detachable installation, such as using a combination of plug-in and snap-fit, or using bolt connections, etc.
[0042] The above description of the specific embodiments of this utility model is only used to further illustrate this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-essential improvements and adjustments made to this utility model by technical engineers based on the above description of the utility model shall fall within the scope of protection of this utility model.
Claims
1. A precast beam forming mold, characterized in that, include: C-shaped frame (111); A top mold module and a bottom mold module are disposed on the upper and lower parts of the C-shaped frame (111), and a side mold module is sleeved on the bottom mold module; the side mold module includes a U-shaped frame (120) that can move longitudinally, and the U-shaped frame (120) is sleeved on the bottom mold module through a rectangular groove (119) opened in its middle. The movable module and two end plates are mounted on the U-shaped frame (120); And the inclined plate transmission assembly set on the top mold module, when the top mold module and the bottom mold module are combined, the inclined plate transmission assembly drives the movable module to move horizontally so that the top mold module, the bottom mold module, the movable module and the U-shaped frame (120) together form a rectangular casting cavity. The two end plates are set at both ends of the U-shaped frame (120) and are used as seals at the ends of the rectangular casting cavity.
2. The precast beam forming mold according to claim 1, characterized in that: Two first cylinders (118) are fixed at the bottom of the inner part of the shaped frame (111), and the two first cylinders (118) are placed on both sides of the bottom mold module; Each of the first cylinders (118) has a first telescopic column at its output end, and the first telescopic column is fixedly connected to the bottom of the U-shaped frame (120).
3. The precast beam forming mold according to claim 1, characterized in that: The activity module includes: The module body (121) is disposed inside the U-shaped frame (120), wherein the module body (121) is provided with a slotted mold on one side near the bottom mold module and a sliding groove on the other side. And a limiting rod (123) fixed on the side of the U-shaped frame (120) away from the bottom mold module, and the limiting rod (123) extends into the slide groove and is slidably installed with the slide groove.
4. The precast beam forming mold according to claim 3, characterized in that: The slotting mold includes: A transverse groove is formed on the side wall of the module body (121), and an insert plate (122) is provided in the transverse groove. An insertion hole is provided on the insert plate (122). And a vertical groove is provided on the top of the module body (121) and connected to the horizontal groove, and a pin (133) is provided in the vertical groove. When the pin (133) is passed through the vertical groove and inserted into the socket of the insert plate (122), it is used to fix the position of the insert plate (122).
5. The precast beam forming mold according to claim 1, characterized in that: The bottom mold module includes: A support (112) is fixed at the bottom of the inner part of the shaped frame (111), and a first U-shaped frame (113) through the rectangular groove (119) is fixed at the top of the support (112). And a second telescopic column (115) built into the first U-shaped frame (113), wherein the bottom end of the second telescopic column (115) passes through the first through hole opened at the bottom of the first U-shaped frame (113) and is connected to the output end of the second cylinder in the support (112), and a bottom template assembly is provided at its top end. When the second telescopic column (115) extends and retracts and drives the bottom template assembly to move longitudinally, it is used to adjust the shape of the bottom wall of the rectangular casting cavity.
6. The precast beam forming mold according to claim 5, characterized in that: The bottom template assembly includes a second U-shaped frame (114) fixed to the telescopic end of the second telescopic column (115), a vibration motor (117) is provided at the bottom of the second U-shaped frame (114), and a vibration plate (116) is provided at the output end of the vibration motor (117) and flush with the top of the second U-shaped frame (114).
7. The precast beam forming mold according to claim 3, characterized in that: The top mold module includes: The third cylinder (124) and the fourth cylinder (130) are set on the top of the C-shaped frame (111). The output ends of the third cylinder (124) and the fourth cylinder (130) pass through the second through hole opened on the C-shaped frame (111) and are connected to the third telescopic column (125) and the fourth telescopic column (131), respectively. The telescopic end of the third telescopic column (125) is fixed with a top plate (126), and the top plate (126) is provided with a through groove (129) corresponding to the bottom film module. And a top block (132) fixed to the telescopic end of the fourth telescopic column (131) and adapted to be inserted into the through groove (129).
8. A precast beam forming mold according to claim 7, characterized in that: The inclined plate transmission assembly includes: An inclined plate body (127) is fixed on the top plate (126); the module body (121) is provided with an inclined groove (128) corresponding to the inclined plate body (127); And wedge surfaces and wedge blocks respectively provided on the side of the inclined groove (128) and the top plate (126) near the limiting rod (123), and the wedge surfaces and wedge blocks are adapted to fit together.