Fabricated air duct mold

Abstract

The utility model aims to provide an assembly type air duct mold which aims to overcome the defects that an air duct needs to be turned over and the bottom of the air duct needs to be turned over from the upper part to the lower part during field installation due to the fact that an air duct mold in the prior art is complex in structure and unreasonable in design structure, and installation is inconvenient. The air duct mold comprises a bottom mold, side molds, inner molds and end molds, the bottom mold is provided with a rectangular top, the end molds are arranged at the left end and the right end of the bottom mold respectively, the inner molds are arranged between the end molds located at the two ends respectively, the inner molds are located above the bottom mold, and a certain distance is formed between the bottom of each inner mold and the upper surface of the bottom mold to form a circulation channel for a pouring object to pass through. According to the assembly type air duct mold with the structure, overturning is not needed when an air duct is installed, operation is easy and convenient when the air duct is installed, only the side mold and the end mold need to be pushed back to the original position along the track, the inner mold needs to be hoisted back to the original position, and then the inner mold is fastened through the fastening mechanism, so that the assembly type air duct mold is very convenient to install.

Description

Technical Field

[0001] The utility model relates to the technical field of component casting and molding, in particular to an assembled air duct mold. Background Art

[0002] Air ducts are commonly installed in subway spaces and workshops. Their overall structure is as follows: Fig. 9 As shown, the cross section of the air duct is U-shaped, mostly with a flat bottom, including an air duct bottom 21 and air duct side arms 22 located on both sides of the air duct bottom. When installed, the air duct side walls on both sides are connected to the bottom of the subway station middle plate, and the air duct and the middle plate form a rectangular channel. Fig.10As shown, some air ducts have one side wall extending beyond the bottom to form a lower hanging plate 23. When making air ducts, reinforced concrete casting is often used. Concrete is poured into the mold on the air duct mold, and installed in the desired position after being formed in the mold. For example, Chinese utility model patent with publication number CN112720808A discloses an air duct mold, which mainly includes a base and a template assembly arranged on the base, the template assembly includes an outer template assembly slidably connected to the base, an inner template assembly arranged on the base in a telescopic and deformable manner, and an end template assembly, the outer template assembly includes a first outer template and a second outer template slidably connected to the base along the length direction, the inner template assembly includes a first inner template and a second inner template symmetrically arranged on both sides of the length direction of the base and capable of telescopic deformation, and a third inner template located between the first inner template and the second inner template and capable of being raised and lowered along the height direction of the base, the first inner template and the second inner template are located between the first inner template and the second inner template and can be raised and lowered along the height direction of the base, There is a spacing space between the template and the second outer template, and between the first inner template and the first outer template, and between the second inner template and the second outer template. The end template assembly includes a first end template and a second end template symmetrically arranged on both sides of the width direction of the base. A first bottom template for supporting the first inner template and a second bottom template for supporting the second inner template are respectively arranged on both sides along the length direction of the base. A first flip template is arranged between the first inner template and the first bottom template, and a second flip template is arranged between the second inner template and the second bottom template. The outer template assembly, the first bottom template, the second bottom template, the first flip template, the second flip template, the inner template assembly and the end template assembly are jointly enclosed to form a mold cavity with an open top. When demolding, first lower the third inner template to separate the third inner template from the first inner template and the second inner template, so that a shrinkage and deformation space is formed between the first inner template and the second inner template, and at the same time, the first flip template and the second flip template flip inward at the same time, so that a shrinkage and deformation space is formed between each inner template and the corresponding bottom template, so that the first inner template and the second inner template shrink and deform inward, so that the inner template assembly is separated from the prefabricated rail top air duct plate, and then the outer template assembly is slid to separate the outer template assembly, and finally the end template assembly is removed. The entire demolding process is relatively complicated, and the air duct formed by this mold has its bottom on top, the side wall on the bottom, and the opening of the air duct facing downward. It needs to be flipped during installation, and this process is complicated to operate and has a high safety risk. In addition, an auxiliary flip structure is required to achieve the shrinkage of the inner mold, which makes the structure of the mold relatively complicated. Utility Model Content

[0003] The utility model aims to provide an assembled air duct mold to address the shortcomings of the prior art air duct mold, such as the complex structure and unreasonable design structure, which requires the air duct to be flipped over during on-site installation, and the bottom of the air duct needs to be flipped from top to bottom, causing inconvenience in installation.

[0004] The technical solution of the utility model to solve the technical problem is as follows:

[0005] An assembled air duct mold, the air duct is U-shaped, the air duct mold comprises a bottom mold, a side mold, an inner mold and an end mold, the bottom mold has a rectangular top, the end molds are respectively arranged at the left and right ends of the bottom mold, the inner molds are respectively arranged between the end molds at the two ends, the inner molds are located above the bottom mold, and a certain distance is formed between the bottom of the inner mold and the upper surface of the bottom mold to form a flow channel for castings to pass through, the side molds are respectively arranged on the front and back sides of the bottom mold, the side molds are U-shaped with the opening upward, the two U-shaped arms of each side mold are respectively fixedly connected with the end mold and the inner mold at the corresponding end by a tightening positioning mechanism, and the bottom of the side mold is fixedly connected with the bottom mold by a tightening positioning mechanism, the U-shaped arms of the two side molds and the bottom mold and the side molds at the corresponding ends form a side arm forming cavity forming a side arm of the air duct, and the bottom mold and the bottom of the two side molds form a bottom forming cavity forming a bottom of the air duct;

[0006] Horizontal side mold tracks are arranged below the bottom mold along the front and rear sides of the bottom mold, side mold rollers or sliders are arranged below the side molds on the front and rear sides, and the side mold rollers or sliders are rollingly or slidingly connected to the side mold tracks, and horizontal end mold tracks are arranged below the bottom mold along the left and right directions of the bottom mold, and end mold rollers or sliders are arranged below the end molds at both ends, and the end molds are rollingly or slidingly connected to the end mold tracks; or horizontal side mold tracks are arranged below the side molds on the front and rear sides along the front and rear sides of the bottom mold, side mold rollers or sliders are arranged below the bottom mold, and the side mold rollers or sliders are rollingly or slidingly connected to the side mold tracks, and horizontal end mold tracks are arranged below the end molds at both ends along the left and right directions of the bottom mold, and end mold rollers or sliders are arranged below the bottom mold, and the end molds are rollingly or slidingly connected to the bottom mold;

[0007] The fastening and positioning mechanism connecting the end mold and the side mold comprises a fastening bolt, a positioning seat and a positioning pin, the positioning seat is provided with a bolt hole and a tapered bayonet groove with a common center line, the positioning seat is fixedly arranged on the side of the U-shaped arm of the side mold facing the end mold, and the large opening end of the bayonet groove faces the U-shaped arm of the side mold, the positioning pin comprises a tapered pin head and a cylindrical pin handle, the tapered pin head has the same taper as the tapered bayonet groove, a tapered through hole with a common center line with the tapered pin head is arranged in the positioning pin, the positioning pin is fixedly arranged on the side of the end mold facing the U-shaped arm of the side mold through the cylindrical pin handle, the positioning seat and the positioning pin are inserted and matched through the tapered bayonet groove and the tapered pin head, and the end mold and the side mold are fixedly connected together by the fastening bolt and the bolt hole threadedly matched and fixedly connected;

[0008] It also includes a combined card plate, the combined card plate includes a U-shaped card plate 1 and a card plate 2 which are stacked up and down in pairs and arranged in opposite directions, the inner sides of the U-shaped bottoms of the card plate 1 and the card plate 2 are semicircular arcs of equal radius, and oblong holes are respectively arranged at the ends of the two U-shaped arms of the card plate 2, and a connecting through hole is arranged at the bottom of the card plate 1, the U-shaped bottom of the card plate 1 is fixedly connected to the top of the end plate, and its open end faces the side arm forming cavity, and when the card plate 1 and the card plate 2 are stacked, the semicircular arc bottom forms a circular hole shape, and the oblong hole of the card plate 1 and the connecting through hole of the card plate 2 are arranged opposite to each other up and down;

[0009] It also includes a window frame and at least two fixed beams for guiding the position of the window frame, wherein the window frame is a rectangular frame body, a tapered frame with a larger top and a smaller bottom, and bayonet slots are arranged on two opposite frame bodies of the window frame, the bottom of the bayonet slot is at the same height as the top of the side mold, the fixed beam is located, the fixed beam is located in the open slot, the fixed beam is movably matched with the window frame through the open slot, and the two ends of the fixed beam are respectively fixedly connected to the side molds on the corresponding sides;

[0010] The end mold and the inner mold both include a plate body, three horizontal reinforcement plates (upper, middle and lower) are fixedly arranged on the outer side of the plate body along the height direction of the plate body, a vertical reinforcement plate (one) is fixedly arranged between the horizontal reinforcement plates, and the horizontal reinforcement plate (one) is fixedly connected to the vertical reinforcement plate (one), the side mold includes a U-shaped plate body, two vertical reinforcement plates are respectively arranged on both sides of the U-shaped arm of the side mold body, a transverse reinforcement plate is arranged between the two vertical reinforcement plates on both sides, the transverse reinforcement plate and the vertical reinforcement plate are fixedly connected to the U-shaped arm of the side mold body, the U-shaped arm of the side mold is fixedly connected to the plate body of the end mold and the inner mold through its vertical reinforcement plate (two), two upper and lower transverse reinforcement plates are fixedly arranged on the bottom of the side mold body, a vertical reinforcement plate (two) is fixedly arranged between the two transverse reinforcement plates, and the bottom of the side mold is fixedly connected to the bottom mold through the bottom of its plate body;

[0011] It also includes a lower hanging plate forming cavity, which is located below the side wall forming cavity on one side and is connected to the side wall forming cavity. The lower hanging plate forming cavity is composed of the lower end of the end mold on one side, the lower inner mold and the lower hanging plate bottom plate.

[0012] The advantages and beneficial effects of the utility model are:

[0013] The assembled air duct mold using the structure of the utility model has a U-shaped structure with its front and rear side molds opening upward, and the main bodies of the end molds and the inner mold at both ends are located above the bottom mold. Therefore, the air duct obtained by pouring has a U-shaped opening facing upward, and there is no need to flip the air duct when installing it. The operation is simple and convenient when installing the air duct. The assembled air duct mold using the structure of the utility model has its front and rear side molds, left and right end molds and inner mold as an integral structure, and the front and rear side molds and the left and right end molds can be translated along the track and can be detachably fixed and connected by a fastening mechanism. When disassembling the mold, it is only necessary to loosen the fastening mechanism, and the side molds, the end molds and the bottom mold can be separated along the track by pulling, and the inner mold can be lifted from the bottom mold by a sling. The disassembly and assembly are simple and convenient. When assembling, it is only necessary to push the side molds and the end molds back to their original positions along the track, lift the inner mold back to its original position, and then fasten it by the fastening mechanism. Therefore, it is also particularly convenient when installing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of an embodiment of the assembled air duct mold of the utility model;

[0015] Figure 2 This is a schematic diagram of the front view of the assembled air duct mold of the utility model;

[0016] Figure 3 for Figure 2 Schematic diagram of the left view;

[0017] Figure 4 for Figure 2 Schematic diagram of the demoulding state, the right end mold is separated from the side mold and the bottom mold;

[0018] Figure 5 for Figure 2 A schematic top view of

[0019] Figure 6 This is a schematic diagram of the state of the combined pallet boards of the utility model after being combined together;

[0020] Figure 7 for Figure 6 A schematic structural diagram of a first embodiment of a combined card board;

[0021] Figure 8 for Figure 7 A schematic structural diagram of a second embodiment of a combined card board;

[0022] Fig. 9 Schematic diagram of the structure of the air duct embodiment'

[0023] Fig.10 It is a structural schematic diagram of another embodiment of the air duct;

[0024] Fig.11 This is a schematic diagram of an assembled air duct mold according to another embodiment of the present invention.

[0025] Description of Reference Numerals

[0026] 1-translation mechanism; 2-bottom mold; 3-end mold 1; 301-horizontal reinforcement plate 1; 302-horizontal reinforcement plate 2;

[0027] 4-side mold 1; 401-vertical reinforcement plate 1; 402-vertical reinforcement plate 2; 5-side mold 2; 6-inner mold 1; 7-inner mold 2; 8-window assembly; 801-window frame; 802-fixing beam; 9-fastening positioning mechanism; 901-fastening bolt; positioning seat-902; positioning pin-903; 904-fixing block; 12-side mold end mold positioning mechanism; 15-combined clamping plate; 151-semicircle; 152-long round hole; 153-connecting through hole; 154-hanging bolt positioning hole; 155-cage 1; 156-cage 2. 157-lower hanging plate molding cavity; 158-lower hanging plate bottom plate; 159-lower inner mold;

[0028] 16-side arm forming cavity; 17-bottom forming cavity; 21-air duct bottom; 22-air duct side arm; 23-lower hanging plate. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below through specific embodiments. The following embodiments are only illustrative and not restrictive, and the protection scope of the present invention cannot be limited by them. Figure 2 The position shown is used as an example for explanation. This position is not a limitation of the orientation of the utility model, but only describes the positional relationship between the various components.

[0030] like Figures 1 to 8As shown, the air duct mold of the structure of the embodiment of the utility model includes a bottom mold 2, an end mold 3, a side mold, and an inner mold. The end mold, the side mold and the inner mold are all arranged vertically with the bottom mold to form a flat-bottomed U-shaped structure air duct mold with an opening facing upward. Specifically, the bottom mold 2 is a flat-top rectangular plate, and side molds are respectively arranged on the front and back sides of the bottom mold, which are side mold 1 4 and side mold 2 5. The side molds include a plate body of a U-shaped structure, referred to as a U-shaped plate body, and the U-shaped plate body is similar to the U-shaped structure of the prepared air duct cross section. The front and back sides of the bottom mold are respectively fixedly connected to the side mold 1 4 and the side mold 2 5 located on the corresponding sides through a fastening positioning mechanism 9. An end mold 3 is respectively arranged at the left and right ends of the bottom mold, and the end mold is fixedly connected to the outer side of the U-shaped plate body of the side mold on the corresponding side and the bottom mold through a tightening positioning mechanism, and the end mold closes the empty space between the U-shaped walls of the front and rear side molds. An inner mold is respectively arranged between the end molds on both sides, which are inner mold 1 6 and inner mold 2 7. The inner mold is located between the U-shaped arms of the side molds on both sides, and is fixedly connected to the inner side of the U-shaped arms of the two side molds through a tightening positioning mechanism 9. The inner mold straddles the flat bottom top of the side mold 1 and the side mold 2, so that the bottom mold and the inner mold are fixedly connected. There is a certain distance between them to form a connecting channel. The inner mold closes the empty space between the U-shaped walls of the corresponding ends of the front and rear side molds. The end molds at the corresponding ends, the inner mold, and the U-shaped arms of the front and rear side molds, and the bottom mold constitute a molding cavity for forming the duct side arms 22 of the duct U-shaped structure, called the side wall molding cavity 16. The bottom mold and the front and rear side molds constitute a molding cavity for forming the bottom of the duct U-shaped structure, called the bottom molding cavity 17. The side arm molding cavity and the bottom molding cavity are connected through the connecting channel between the inner mold and the bottom mold. The duct obtained by casting the duct mold with the above structure is as follows Fig. 9 The flat bottom duct mold shown. Fig.10 When the air duct has a lower hanging plate 23 on the back of the bottom shown, the structure of the corresponding air duct mold is also changed accordingly. A lower inner mold 159 is also provided below one side of the bottom mold 2. The lower end of the end mold 1 on this side is located below the bottom mold 2. A lower protruding plate is provided on the side of the side mold corresponding to the end mold 1. The lower end of the end mold, the lower inner mold and the lower protruding plate of the side mold are closed by the lower bottom plate 158. The bottom of the lower hanging plate forming cavity 157 is connected to the side arm forming cavity 16. The top of the lower inner mold and the lower bottom plate are fixedly connected by a tight positioning mechanism.

[0031] When preparing the air duct, first pour part of the concrete into the bottom forming cavity 17, then pour part of the concrete into the side arm forming cavity 16, and then pour concrete into the bottom forming cavity before the bottom is completely solidified, and pour concrete alternately until the side arm forming cavity is filled and then the bottom forming cavity is filled. This alternate pouring can be done once or multiple times. A vibrator is used during pouring. In this method, the air duct mold is first poured into the bottom molding cavity, so that the height of the concrete in the bottom molding cavity is lower than the design height of the bottom molding cavity, and part of the concrete flows into the side arm molding cavity, which can reduce the initial pouring depth of the concrete in the side arm molding cavity and reduce the height of the concrete surge when pouring concrete. Even if part of the concrete in the side wall molding cavity is poured into the bottom molding cavity due to surge when pouring the side arm molding cavity, it is not easy to produce local concrete accumulation in the bottom molding cavity that is higher than the design height of the bottom molding cavity because the bottom molding cavity is not full of concrete and the concrete surge height is reduced. This method is more suitable for the situation where the concrete fluidity is relatively low. In this case, the surge of the concrete itself is relatively small compared to the case where the concrete fluidity is relatively large. It can save the labor of workers cleaning up, reduce labor input and workers' labor intensity. Alternatively, the side arm forming cavity may be poured first. Similarly, a portion of concrete is first poured into the side arm forming cavity. During pouring, due to the fluidity of the concrete, the concrete will flow into the bottom forming cavity from the connecting channel between the bottom forming cavity and the side arm forming cavity. Since there is no concrete in the bottom forming cavity and part of the concrete is poured into the side arm forming cavity, the amount of concrete flowing into the bottom forming cavity is easy to control to prevent excessive surging. Then, concrete is poured into the bottom forming cavity, and part of the concrete also enters the side arm forming cavity at the same time. Then, concrete is poured into the side arm forming cavity. By alternately pouring, the concrete in the bottom forming cavity and the side arm forming cavity flows with each other, and no cold joint is generated. This method is more suitable for situations where the concrete fluidity is better. By adopting the above method, no matter whether the bottom forming cavity or the side arm forming cavity is poured first, a part of concrete is firstly obtained in the side arm forming cavity, thereby reducing the height of concrete surging into the bottom forming cavity, preventing the surging into the bottom forming cavity caused by the large concrete pressure caused by the deep measuring arm when pouring the side arm forming cavity, and no need to clean the sticky concrete, thereby improving production efficiency and reducing labor intensity. The overall advantages of alternately pouring concrete into the bottom forming cavity and the side arm forming cavity are as follows: 1. It can prevent bubbles and cavities from being generated in the bottom mold; 2. It can increase strength and reduce the time of strength; 3. It can make the concrete on the vertical side and the concrete on the bottom contact more effectively, so that the strength is increased quickly, and prevent the vertical surface from being a vertical surface and the plane from being a plane, and the strength cannot be increased, and prevent the generation of cold joints.4. During alternating exchange, the pouring directions of the bottom molding cavity and the side arm molding cavity are inconsistent, and concrete is poured from different positions with inconsistent pouring directions. Therefore, the flow direction of the concrete is inconsistent, and the air in the mold cavity can be squeezed out from different directions and angles, which can avoid the air being squeezed underneath when pouring all from above, causing slurry overflow.

[0032] A better solution is to first pour one-third to three-quarters of the concrete into the bottom molding cavity or the side arm molding cavity, and then pour them alternately. This can improve production efficiency while well controlling the surging and creating local elevated areas.

[0033] Preferably, during pouring, hanging bolts (not shown in the figure) are poured into the inner cavity of the mold. The hanging bolts can be used as a tool for hanging the air duct, and can also be used as a positioning and installation component when the air duct is installed. Preferably, at least two hanging bolts are poured on the top of each side arm forming cavity, and an I-shaped channel steel is fixedly set at the bottom of the side arm forming cavity as a fixing member. The end of the bolt rod of the hanging bolt close to the bolt head is fixedly connected to the fixing member, and the free end of the bolt rod of the hanging bolt is located outside the concrete and is positioned by the positioning member to ensure that the position of the hanging bolt does not shift during pouring and vibration. The bolt rod of the hanging bolt is set perpendicular to the bottom mold. A better structure of the positioning member is a combined card plate, including two U-shaped plates, namely card plate one 155 and card plate two 156. The inner sides of the U-shaped bottoms of card plate one and card plate two are both semicircular arc-shaped, and the radius of the semicircular arc of card plate one and card plate two is equal. Two connecting through holes 153 are arranged at the bottom of the first card, and an oblong hole 152 is arranged on the two U-shaped arms of the second card. When the two U-shaped plates are clamped, the connecting through holes and the oblong holes are arranged opposite to each other up and down, and the inner side of the semicircular U-shaped bottom of the two forms a circular hole for accommodating the bolt rod. The first card is fixed to the top of the end mold of the mold by welding at its bottom, and its U-shaped opening faces the side arm forming cavity and corresponds to the position of the fixing member at the bottom of the forming cavity. The opening of the first card is clamped on the outside of the bolt rod of the hanging bolt, and the two oblong holes on the two U-shaped arms of the second card are respectively aligned with the connecting through holes on the first card, and then fastened to the top of the end mold by the connecting bolt. The structure of the two U-shaped plate openings clamping against each other is used to fix the hanging bolt, which is convenient for operation. In particular, when opening the mold, only the second card needs to be removed, and the first card does not move. When assembling next time, the end mold can be pushed horizontally to make the bolt rod of the hanging bolt enter the semicircular arc of the first card, which is particularly convenient for operation. In a better solution, the first and second clamps are fixed as a whole on the top of the mold end mold by bolts. The first and second clamps are combined together to form a through hole for the bolt rod to pass through. When removing the mold, the first and second clamps are removed at the same time. When installing the mold, the bolts pass through the through hole formed by the first and second clamps and are then installed at the same time. This makes the operation more convenient.

[0034] When installing hanging bolts on the pouring air duct, it is necessary to control the pouring amount of concrete and implement multiple pouring to prevent the air in the opening of the channel steel that fixes the hanging bolts from being unable to be discharged. For the first time, a portion of concrete is poured into the bottom molding cavity, and a thin layer of concrete is poured first. The concrete flows into the inner cavity of the channel steel opening from the lower side to squeeze out the air. Before the bottom molding cavity is completely solidified, another portion is poured into the side arm molding cavity to make the concrete in the side arm molding cavity and the bottom molding cavity fully contact, so that the solidification time of the concrete in the side arm molding cavity and the bottom molding cavity is synchronized. The synchronization of the solidification time of the concrete can make the strength of the side arm molding cavity and the bottom molding cavity match, reduce the occurrence of cracks, and reduce color difference. During casting, pouring is carried out by a pouring hopper. The pouring speed can be controlled by controlling the amount poured at one time. Therefore, when using the method of the utility model to pour different specifications or different products, there is no need to frequently replace the hopper. By adopting the method of the utility model, a small amount of concrete is first poured into the bottom forming cavity in batches, and then a part of concrete is poured into the side arm forming cavity. Such alternating pouring can prevent a large amount of concrete from falling from above the bottom forming cavity too quickly. The concrete covers and closes the openings at both ends of the channel steel, so that a pressure cavity is formed after being sealed by the concrete. After the air is sealed inside, due to the existence of pressure, the concrete cannot enter the opening of the channel steel to form a cavity.

[0035] It is best to put a protective tube on the exposed part of the bolt during pouring to prevent the concrete from contaminating the thread during the pouring process.

[0036] To facilitate disassembly and assembly, the side molds and end molds are made to be movable. A horizontal side mold track 201 is arranged below the bottom mold, and the side mold track is arranged vertically in the length direction of the bottom mold, that is, the left and right ends of the bottom mold. Side mold rollers or sliders 202 are arranged at the lower parts of the side molds on the front and rear sides, and the side mold rollers or sliders are rollingly or slidingly connected to the side mold track. End mold rollers or sliders 203 are arranged below the end molds at the left and right ends, and an end mold track 204 is arranged below the bottom mold. The end mold track is horizontally arranged and parallel to the length direction of the bottom mold, that is, the left and right direction, and the end mold is rollingly or slidingly connected to the end mold track, so that the end mold and the side mold can be translated inward and outward by pushing and pulling. When it is necessary to remove the mold, it is only necessary to remove the fixing positioning mechanism connecting the inner mold and the side mold, the fixing positioning mechanism connecting the end mold and the side mold, and the fixing positioning mechanism connecting the side mold and the bottom mold, and then lift the inner mold away, and translate the side mold and the end mold outward to lift the prepared air duct. When lifting bolts are provided, remove the second clamping plate, and only need to combine the lifting bolts with the lifting device. When pouring the next mold, it is only necessary to hang the inner mold back to its original position, push the side mold and the end mold back to their original positions, and then fasten them with a fastening positioning mechanism. The disassembly and assembly are relatively convenient, and the pull-out disassembly and assembly can be realized. The entire mold does not need to be completely disassembled, which is as convenient as opening and closing a drawer. In addition, making the side mold and the end mold movable can prevent the expansion of the mold due to the expansion of the concrete after steaming and water heating, so that the concrete and the mold become one, and the component cannot be hoisted out. Due to the rolling back and forth of the pulley, a better solution is that the end mold track is set below the end mold to form a whole with the end mold, the end mold roller or slider is set below the bottom mold to form a whole with the bottom mold, the side mold track is set below the side mold to form a whole with the side mold, and the side mold roller or slider is set below the bottom mold to form a whole with the bottom mold. Fixing the end mold track and the end mold as an integral setting, and fixing the side mold track and the side mold as an integral setting, in addition to the advantages of the aforementioned translational side molds and end molds, also has the following advantages: the end mold and side molds move, but the bottom mold does not move, therefore, the end mold track and the side mold track move, but the end mold rollers and the side mold rail wheels do not move, therefore, the floating error caused by the rollers rolling along the tracks can be avoided, and since the tracks are rigid and less deformed than rubber rollers, the position accuracy before and after movement is better controlled, making the end mold and side molds push and pull smoother.

[0037] In the present invention, the fastening positioning mechanism preferably adopts the following structure, including a fastening bolt 901 and a positioning structure, the positioning structure including a positioning seat 902 and a positioning pin 903, the positioning seat is provided with a bolt hole and a tapered bayonet groove having a co-center line, the positioning seat is fixedly arranged on the side of the U-shaped arm of the side mold facing the end mold, the bayonet groove is arranged opposite to the end mold, and the large opening end of the bayonet groove is arranged toward the end mold, the positioning pin 903 includes a tapered pin head and a cylindrical pin handle, the positioning pin 903 is arranged on the side of the end mold facing the U-shaped arm of the side mold, the positioning pin 903 is fixedly connected to the end mold through the pin handle, the tapered pin head and the tapered bayonet groove have the same taper, and the two are plug-in matingly connected, the positioning pin is provided with a tapered through hole having a co-center line with the bolt hole, a fixing block 904 is fixedly arranged on the side mold, the fixing block is provided with a fixing block threaded hole, the fixing block threaded hole and the bolt hole are colinear, and the removed bolts can be placed when the mold is removed to prevent the bolts from being lost. When disassembling the mold, since the end mold and the side mold are pulled out in a horizontal motion and are limited in position by the guide rail, their centering positions do not change, and the centering positions of the locating pin and the locating seat do not change. When installing the mold, the tapered bayonet groove and the locating pin remain centered. When the end mold and the side mold are pushed to be combined with the bottom mold, the locating pin cooperates with the locating seat during the pushing process to combine the two together. Then, tighten the fastening bolts to connect the end mold and the side mold together. Since the locating pin is tapered and the bayonet groove is also tapered, the two are easy to insert, which reduces the accuracy requirements for the alignment position of the end mold and the side mold. However, since the position of the bayonet groove remains unchanged, once the two are inserted and connected, the design accuracy can be restored, so the assembly accuracy of the mold can also be guaranteed.

[0038] In the utility model, when the air duct needs to open a window, a window assembly 8 is also provided. The window assembly 8 includes a rectangular window frame 801, whose height is greater than the depth after the bottom mold and the side mold are enclosed, and is a tapered structure with a large top and a small bottom, which is conducive to pulling out the window. In order to adapt to the change of the window position, two fixed beams 802 are also provided. Two bayonet grooves are respectively provided on the two opposite sides of the window frame. The bottom of the bayonet groove is equal to the top of the side mold. The two ends of the fixed beam are respectively arranged above the top of the side molds on both sides and are fixedly connected by bolts. The fixed beam is connected to the window frame by the bayonet groove. Because the bottom height of the bayonet groove of the window frame is equal to the top of the side mold, the overall height of the window frame is higher than the height of the top of the side mold, and the bayonet groove supports the fixed beam, so when pouring, concrete is not easy to enter the window frame, nor is it easy to contact the fixed beam. Therefore, the cleaning workload of the concrete in the window frame and the cleaning workload of the fixed beam can be reduced. The window frame can be moved along the length direction of the fixed beam through the bayonet groove. Therefore, the position of the window frame can be easily adjusted to meet the different position requirements of windows of different models of molds.

[0039] In the mold of the utility model, it is best that the templates of the inner mold, side mold and end mold are all provided with reinforcing ribs and reinforcement plates to reduce the overall weight of the mold and ensure the overall strength of the mold. Specifically, the main structure of the end mold and the inner mold is a rectangular plate, and three layers of horizontal reinforcement plates 301 are provided on the outer side thereof, the upper horizontal reinforcement plate 1 is located at the top thereof, and the lower horizontal reinforcement plate 1 is located at the bottom thereof. A vertical reinforcement plate 401 is provided between the three layers of horizontal reinforcement plates 1 so that the rectangular plate body and the three layers of horizontal reinforcement plates form a whole, forming a lattice structure. The width of the bottom horizontal reinforcement plate 1 of the end mold and the inner mold is greater than the width of the top horizontal reinforcement plate 1, which is convenient for the connection of the fastening positioning mechanism. The U-shaped plate body of the side mold is provided with a transverse reinforcement plate 2 on the outside, and the two ends of the side arms are provided with vertical reinforcement plates 2 on the outside. The two vertical reinforcement plates are fixedly connected by the transverse reinforcement plates 2. With this structure, the end mold and the inner mold are respectively connected to the two vertical reinforcement plates of the side mold, which is convenient for the disassembly and assembly of the fastening positioning mechanism, and also reduces the overall weight of the mold. The bottom mold template contacts and seals the bottom of the end mold, side mold and inner mold. The inner mold is also bolted to the horizontal and vertical surfaces of the side mold.

Claims

1. An assembled air duct mold, wherein the air duct is U-shaped, characterized in that: The air duct mold includes a bottom mold, a side mold, an inner mold and an end mold. The bottom mold has a rectangular top. The end molds are respectively arranged at the left and right ends of the bottom mold, and the inner molds are respectively arranged between the end molds at the two ends. The inner mold is located above the bottom mold, and a certain distance is provided between its bottom and the upper surface of the bottom mold to form a circulation channel for the casting to pass through. The side molds are respectively arranged on the front and back sides of the bottom mold. The side molds are U-shaped with the opening upward. The two U-shaped arms of each side mold are respectively fixedly connected to the end mold and the inner mold at the corresponding end by a tightening positioning mechanism, and the bottom is fixedly connected to the bottom mold by a tightening positioning mechanism. The U-shaped arms of the two side molds and the bottom molds and side molds at the corresponding ends form a side arm molding cavity for forming the side arms of the air duct. The bottom mold and the bottoms of the two side molds form a bottom molding cavity for forming the bottom of the air duct.

2. The assembled air duct mold according to claim 1, characterized in that: Horizontal side mold tracks are arranged below the bottom mold along the front and rear sides of the bottom mold, side mold rollers or sliders are arranged below the side molds on the front and rear sides, and the side mold rollers or sliders are rollingly or slidingly connected to the side mold tracks, and horizontal end mold tracks are arranged below the bottom mold along the left and right directions of the bottom mold, and end mold rollers or sliders are respectively arranged below the end molds at both ends, and the end molds are rollingly or slidingly connected to the end mold tracks; or horizontal side mold tracks are arranged below the side molds on the front and rear sides along the front and rear sides of the bottom mold, side mold rollers or sliders are arranged below the bottom mold, and the side mold rollers or sliders are rollingly or slidingly connected to the side mold tracks, and horizontal end mold tracks are arranged below the end molds at both ends along the left and right directions of the bottom mold, and end mold rollers or sliders are arranged below the bottom mold, and the end molds are rollingly or slidingly connected to the bottom mold.

3. The assembled air duct mold according to claim 1 or 2, characterized in that: The fastening and positioning mechanism connecting the end mold and the side mold includes a fastening bolt, a locating seat and a locating pin. The locating seat is provided with a bolt hole and a tapered bayonet groove having a co-center line. The locating seat is fixedly arranged on the side of the U-shaped arm of the side mold facing the end mold, and the large opening end of the bayonet groove faces the U-shaped arm of the side mold. The locating pin includes a tapered pin head and a cylindrical pin handle. The tapered pin head has the same taper as the tapered bayonet groove. A tapered through hole having a co-center line with the tapered pin head is arranged in the locating pin. The locating pin is fixedly arranged on the side of the U-shaped arm of the end mold facing the side mold through the cylindrical pin handle. The locating seat and the locating pin are inserted and matched through the tapered bayonet groove and the tapered pin head. The end mold and the side mold are fixedly connected together by the fastening bolt and the bolt hole threaded connection.

4. The assembled air duct mold according to claim 1, characterized in that: It also includes a combined pallet, which includes a U-shaped pallet one and a pallet two that are stacked up and down in pairs and arranged in opposite directions. The inner sides of the U-shaped bottoms of the pallet one and the pallet two are semicircular arcs of equal radius, and oblong holes are respectively provided at the ends of the two U-shaped arms of the pallet two. A connecting through hole is provided at the bottom of the pallet one. The U-shaped bottom of the pallet one is fixedly connected to the top of the end plate, and its open end faces the side arm forming cavity. When the pallet one and the pallet two are stacked, the semicircular arc bottom forms a circular hole shape, and the oblong hole of the pallet one and the connecting through hole of the pallet two are arranged opposite to each other up and down.

5. The assembled air duct mold according to claim 1, characterized in that: It also includes a window frame and at least two fixed beams for guiding the position of the window frame. The window frame is a rectangular frame, which is a conical frame that is larger at the top and smaller at the bottom. Bayonet grooves are arranged on two opposite frames of the window frame. The bottom of the bayonet groove is at the same height as the top of the side mold. The fixed beam is located in the open groove. The fixed beam and the window frame are movably connected through the open groove. The two ends of the fixed beam are respectively fixedly connected to the side molds on the corresponding sides.

6. The assembled air duct mold according to claim 1, characterized in that: The end mold and the inner mold both include a plate body, and three horizontal reinforcement plates (upper, middle and lower) are fixedly arranged on the outer side of the plate body along the height direction of the plate body, and a vertical reinforcement plate (one) is fixedly arranged between the horizontal reinforcement plates, and the horizontal reinforcement plate (one) is fixedly connected to the vertical reinforcement plate (one); the side mold includes a U-shaped plate body, and vertical reinforcement plates (two) are respectively arranged on both sides of the U-shaped arm of the side mold body, and a transverse reinforcement plate is arranged between the two vertical reinforcement plates on both sides, and the transverse reinforcement plates and the vertical reinforcement plates are fixedly connected to the U-shaped arms of the side mold body, and the U-shaped arms of the side mold are fixedly connected to the plate bodies of the end mold and the inner mold through the vertical reinforcement plates (two); two upper and lower transverse reinforcement plates are fixedly arranged on the bottom of the side mold body, and a vertical reinforcement plate (two) is fixedly arranged between the two transverse reinforcement plates, and the bottom of the side mold is fixedly connected to the bottom mold through the bottom of its plate body.

7. The assembled air duct mold according to any one of claims 1, 2, 4, 5, and 6, characterized in that: It also includes a lower hanging plate forming cavity, which is located below the side wall forming cavity on one side and is connected to the side wall forming cavity. The lower hanging plate forming cavity is composed of the lower end of the end mold on one side, the lower inner mold and the lower hanging plate bottom plate.

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