A production mold for a prefabricated laminated slab

Abstract

The application discloses a production mold for prefabricated composite boards, comprising: a mold body, including a bottom mold and side mold assemblies arranged on four sides of the bottom mold; a steel bar net rack, including reinforcing steel bars and steel bar trusses; the side mold assembly comprises: a side mold plate provided with a strip-shaped opening; a grout blocking strip having perforations distributed along the length direction of the grout blocking strip and adjustable in position and quantity, the perforations being used for allowing the reinforcing steel bars to pass through and seal, so that the grout blocking strip and the reinforcing steel bars fill the strip-shaped opening; and the grout blocking strip comprises grout blocking pieces connected in sequence along the length direction of the grout blocking strip. The production mold for prefabricated composite boards is formed by sequentially splicing a plurality of grout blocking pieces to form a grout blocking strip adjustable in perforation position and quantity, and the reinforcing steel bars pass through the perforations, so that the concrete grout is solidified and formed in a pouring cavity, the needs of producing different prefabricated composite board products are met, the application range is expanded, and the increase of production cost caused by replacement of the mold is avoided.

Description

Technical Field

[0001] This invention relates to the field of prefabricated component manufacturing technology, and in particular to a production mold for prefabricated composite slabs. Background Technology

[0002] Precast composite slabs are assembled floor slabs made by stacking precast slabs and cast-in-place concrete layers. They are characterized by high strength, moisture resistance, fire resistance, and good heat and sound insulation. They are widely used in cast-in-place construction sites such as walls and roofs.

[0003] Most existing precast composite slab production molds are like... Figure 1 As shown, the mold includes a rectangular bottom mold and side molds fixed to the four sides of the outer perimeter of the bottom mold. The bottom mold and side molds enclose a casting cavity. The top surface of the side molds has multiple notches distributed along its own length. The notches are long and extend vertically. The notches allow the reinforcing bars in the steel mesh to pass through. Then, a grout-sealing strip is inserted at the reinforcing bar where the notch is passed through. The notch is sealed by the grout-sealing strip and the reinforcing bar. Concrete grout is injected into the casting cavity. After the concrete grout has solidified, it is integrally connected with the reinforcing bars and the bottom of the steel truss to form a precast composite slab. After the grout-sealing strip is removed, the formed precast product can be taken out of the mold.

[0004] However, the aforementioned mold structure is fixed, specifically in the number and position of notches on the side templates. This results in a fixed number and position of reinforcing bars in the precast composite slab, which cannot be adjusted or changed. Different production molds are required when producing different composite slabs, increasing production costs. Furthermore, the depth of the casting cavity formed by the bottom mold and side templates is fixed, resulting in a fixed thickness of the cast precast composite slab, making it impossible to produce precast composite slabs of different thicknesses.

[0005] Therefore, it is necessary to improve the production molds for prefabricated composite slabs in the existing technology. Summary of the Invention

[0006] The purpose of this invention is to overcome the defects in the prior art and provide a production mold for precast composite slabs that can adjust the number and distribution of reinforcing bars to produce different types of products and facilitate the adjustment of product thickness.

[0007] To achieve the above-mentioned technical effects, the technical solution of the present invention is: a production mold for precast composite slabs, comprising:

[0008] The mold body includes a horizontal bottom mold and side mold assemblies disposed on the four sides of the bottom mold and enclosing the bottom mold to form an upward-opening casting cavity;

[0009] A steel reinforcement mesh, the steel reinforcement mesh comprising reinforcing bars penetrating the side formwork assembly and steel trusses connected to the reinforcing bars;

[0010] The side mold assembly includes:

[0011] A side template, wherein a strip-shaped opening is provided on the side template, and both the side template and the strip-shaped opening extend along the length direction corresponding to the side wall of the bottom mold;

[0012] A grout-blocking strip extends along the length of the strip-shaped opening and has perforations distributed along its own length and whose position and number are adjustable. The perforations allow the reinforcing steel bar to pass through for sealing, so that the grout-blocking strip and the reinforcing steel bar fill the strip-shaped opening. The grout-blocking strip includes grout-blocking components connected sequentially along its own length.

[0013] Preferably, in order to form a perforation for sealing the reinforcing steel bars, the perforation is formed by two adjacent grouting components.

[0014] Preferably, in order to form a grout-blocking strip, the grout-blocking component includes a grout-blocking block that is slidably connected to the side template along the length direction of the strip opening, and the grout-blocking component is connected to a locking component for locking the grout-blocking block to the inside of the strip opening.

[0015] Preferably, for ease of assembly, all grout-blocking components are of the same length, and the locking assembly includes a locking rod, through which the grout-blocking component is inserted into the side template.

[0016] Preferably, in order to strengthen the splicing structure, the locking assembly further includes a fastener that is fixedly connected to the locking rod, and the fastener is fixedly connected to the side template by a fastening bolt.

[0017] Preferably, in order to expand the production applicability of the mold, the slurry blocking component includes two slurry blocking blocks that are slidably connected relative to each other along the length direction of the strip opening. Each of the two slurry blocking blocks is connected to a locking component, which is used to lock the corresponding slurry blocking block to the inside of the strip opening.

[0018] Preferably, in order to facilitate locking the position of the grout block, the locking assembly includes a locking tube connected to the grout block and a locking bolt threaded to the locking tube. The side of the side template away from the pouring cavity is provided with a base plate, and the locking bolt abuts against the base plate.

[0019] Preferably, in order to enhance the locking effect on the blockage block, the base plate is provided with a clamping groove extending along the length direction of the strip opening, and the locking bolt is clamped between the two inner sidewalls of the clamping groove.

[0020] Preferably, to facilitate demolding, the side template includes a detachably connected upper template and a lower template. The bottom surface of the upper template is provided with a recessed opening, and the top surface of the lower template is provided with an upper recessed opening. The upper recessed opening and the lower recessed opening are combined to form the strip-shaped opening.

[0021] Preferably, in order to facilitate the adjustment of the depth of the casting cavity to produce precast composite slabs of different thicknesses, the bottom mold is connected to a lifting assembly, which is used to adjust the depth of the casting cavity.

[0022] In summary, compared with the prior art, the production mold of the precast composite slab of the present invention forms a grout-blocking strip with adjustable perforation position and number by sequentially splicing multiple grout-blocking components. With the reinforcement bars passing through the perforations, the concrete grout is ensured to solidify and form in the pouring cavity, so as to meet the needs of producing different precast composite slab products, expand the scope of application, and avoid the increase in production costs caused by changing the mold. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a production mold for precast composite slabs using existing technology;

[0024] Figure 2 This is a schematic diagram of the structure of the first embodiment;

[0025] Figure 3 yes Figure 2 Structural diagram omitting the steel reinforcement mesh;

[0026] Figure 4 yes Figure 3 Enlarged view of part A;

[0027] Figure 5 This is a schematic diagram of the side mold assembly in the first embodiment;

[0028] Figure 6 yes Figure 5 An explosion diagram;

[0029] Figure 7 This is a schematic diagram of the grout-blocking component in the first embodiment;

[0030] Figure 8 This is an exploded view of the side template of the first embodiment;

[0031] Figure 9 This is a structural schematic diagram of the side template in the second embodiment;

[0032] Figure 10 yes Figure 9 The structural diagram of the steel reinforcement mesh is omitted.

[0033] Figure 11 yes Figure 10 Enlarged view of part B;

[0034] Figure 12 This is a schematic diagram of the side mold assembly in the second embodiment;

[0035] Figure 13 This is a schematic diagram of the grout-blocking component in the second embodiment;

[0036] Figure 14 yes Figure 13 An explosion diagram;

[0037] Figure 15 This is a structural schematic diagram of the third embodiment;

[0038] Figure 16 yes Figure 15 An explosion diagram;

[0039] In the diagram: 1. Bottom formwork; 2. Reinforcing steel mesh; 21. Reinforcing steel; 22. Reinforcing steel truss; 3. Side formwork; 31. Strip opening; 32. Base plate; 321. Groove; 322. First insertion hole; 33. Upper formwork; 331. Lower recess; 34. Lower formwork; 341. Upper recess; 35. Fixing bolt; 4. Grouting strip; 41. Through hole; 5. Grouting component; 51. Grouting block; 511. Butt joint recess; 512. Sliding opening; 52. Limiting plate; 53. Insertion plate; 531. Second insertion hole; 54. Connecting screw; 55. Locking sleeve; 6. Locking assembly; 61. Locking rod; 62. Fastener; 63. Fastening bolt; 64. Locking tube; 65. Locking bolt; 7. Lifting assembly; 8. Base; 81. Support leg; 82. Flanged edge. Detailed Implementation

[0040] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solutions of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0041] First Embodiment

[0042] like Figures 2-8 As shown, the production mold for the prefabricated composite slab according to the first embodiment of the present invention includes:

[0043] The mold body includes a horizontal bottom mold 1 and side mold assemblies disposed on the four sides of the bottom mold 1 and enclosing the bottom mold 1 to form an upward-opening casting cavity;

[0044] The steel reinforcement frame 2 includes reinforcing bars 21 that penetrate the side formwork assembly and steel trusses 22 connected to the reinforcing bars 21;

[0045] The side mold assembly includes:

[0046] Side template 3, with a strip opening 31 provided on the side template 3, both the side template 3 and the strip opening 31 extend along the length direction of the corresponding bottom mold 1 side wall;

[0047] The grout-blocking strip 4 extends along the length of the strip-shaped opening 31 and has perforations 41 distributed along its own length and whose position and number are adjustable. The perforations 41 allow the reinforcing steel bar 21 to pass through for sealing, so that the grout-blocking strip 4 and the reinforcing steel bar 21 fill the strip-shaped opening 31. The grout-blocking strip 4 includes grout-blocking components 5 connected sequentially along its own length.

[0048] Specifically, the production mold for the precast composite slab in this embodiment also includes a base 8. The horizontal projection of the bottom mold 1 is rectangular. The bottom mold 1 is fixed above the base 8. The side mold 3 in the side mold assembly is sealed and fitted to one of the outer side walls of the outer periphery of the bottom mold 1 and extends along the length direction of the outer side wall. The side mold 3 is provided with a strip-shaped opening 31 extending along its own length direction. Multiple grout-blocking components 5 are sequentially connected along their own length direction in the strip-shaped opening 31. The grout-blocking components 5 are sequentially connected to form grout-blocking strips 4 with adjustable position and number of perforations 41.

[0049] The bottom mold 1 and four side molds 3 enclose a casting cavity for placing the reinforcing mesh 2 and pouring concrete grout. The reinforcing mesh 2 includes reinforcing bars 21 and reinforcing trusses 22 that are fixedly connected. The reinforcing bars 21 are arranged in two layers. One layer of reinforcing bars 21 is distributed side by side along the length of the bottom mold 1 and passes through the side molds 3 of two side mold components. The other layer of reinforcing bars 21 is distributed side by side along the width of the bottom mold 1 and passes through the side molds 3 of the other two side mold components. Specifically, the two ends of the two layers of reinforcing bars 21 pass through the perforations 41 on the side molds 3 of the four side mold components. The reinforcing trusses 22 are distributed side by side along the width of the bottom mold 1. After the reinforcing mesh 2 is erected, concrete grout is injected into the casting cavity. After the concrete grout solidifies, it forms a concrete slab integrally connected with the reinforcing bars 21 and reinforcing trusses 22, thus forming a precast composite slab product. The precast composite slab product can then be removed from the mold body.

[0050] In this embodiment, the grout-blocking strip 4 is formed by splicing together multiple grout-blocking components 5, and the perforation 41 is formed by enclosing two adjacent grout-blocking components 5. Specifically, there are three types of grout-blocking components 5 in the grout-blocking strip 4, including a first grout-blocking component 5, a second grout-blocking component 5, and a third grout-blocking component 5, such as... Figures 4-7As shown, the two ends of the first grout-blocking component 5 are flat vertical surfaces. Viewed from the outside of the casting cavity, the left end of the second grout-blocking component 5 has a butt joint notch 511, and the right end is a flat vertical surface. The right end of the third grout-blocking component 5 has a butt joint notch 511, and the left end is a flat vertical surface. After splicing the left end of the second grout-blocking component 5 and the right end of the third grout-blocking component 5, the butt joint notches 511 on the end faces of the two grout-blocking components 5 are aligned and connected to form a cylindrical perforation 41, which facilitates the passage of the reinforcing steel bar 21. In addition, the right end face of the second grout-blocking component 5 can be spliced ​​sequentially along the length of the strip opening 31. Any number (including zero) of the first grout-blocking components 5 can be connected to the left end face of the third grout-blocking component 5. Any number (including zero) of the first grout-blocking components 5 can be sequentially spliced ​​along the length direction of the strip opening 31. In this way, by adjusting the number and distribution position of the three types of grout-blocking components 5, the number and distribution position of the perforations 41 of the grout-blocking strip 4 can be flexibly adjusted for the reinforcing steel bars 21 to be inserted. This enables the production of different models of precast composite slab products, avoiding the need to change molds. Only a certain number of the three types of grout-blocking components 5 are needed to meet the above production requirements, thereby significantly reducing production costs.

[0051] A further improvement is that the grout-blocking component 5 includes a grout-blocking block 51 that is slidably connected to the side template 3 along the length direction of the strip opening 31. The grout-blocking component 5 is connected to a locking component 6, which is used to lock the grout-blocking block 51 to the inside of the strip opening 31. The lengths of each grout-blocking component 5 are consistent. The locking component 6 includes a locking rod 61, and the grout-blocking component 5 is inserted into the side template 3 through the locking rod 61. The locking component 6 also includes a fastener 62 that is fixedly connected to the locking rod 61. The fastener 62 is fixedly connected to the side template 3 through a fastening bolt 63.

[0052] Specifically, the side template 3 is integrally connected to the base plate 32 with the same length direction. The length direction of the base plate 32 is consistent with the length direction of the side template 3 and the two ends are flush. The base plate 32 is horizontally fixed above the base 8.

[0053] All the plugging components 5 have the same length, and the length of the strip opening 31 is an integer multiple of the length of the plugging component 5. Therefore, only a certain number of plugging components 5 need to be spliced ​​together and inserted into the strip opening 31 in sequence to ensure that the inner walls of both ends of the strip opening 31 are sealed and fitted with the plugging components 5 at both ends. The specific structure of the plugging component 5 is shown in the figure. Figure 6 and Figure 7As shown, the grout-blocking component 5 includes an integrally connected grout-blocking block 51, a limiting plate 52, and a plug-in plate 53. The width of the grout-blocking block 51 is the same as the width of the strip-shaped opening 31, so that after the grout-blocking block 51 is inserted into the inside of the strip-shaped opening 31, the top and bottom surfaces of the grout-blocking block 51 can seal against the upper and lower inner walls of the strip-shaped opening 31, and facilitate the sliding of the grout-blocking block 51 along the length of the strip-shaped opening 31. The limiting plate 52 is set in the vertical direction. When the grout-blocking block 51 is filled into the strip-shaped opening 31, the limiting plate 52 is attached to the side of the side template 3 away from the pouring cavity, and the bottom is attached to the bottom plate 32. The plug-in plate 53 is set horizontally and is attached to the top surface of the bottom plate 32. The plug-in plate 53 is provided with a second insertion hole 531, which is a through hole.

[0054] The base plate 32 is provided with first insertion holes 322 evenly distributed along its own length direction. The distribution interval of the first insertion holes 322 is consistent with the length direction of the grout-blocking component 5, so that the grout-blocking blocks 51 of each grout-blocking component 5 fill the strip opening 31 and the grout-blocking blocks 51 are connected in sequence so that the sum of the lengths of all grout-blocking blocks 51 is the same as the length of the strip opening 31. Then, the second insertion holes 531 on the insertion plates 53 of each grout-blocking component 5 are aligned with the first insertion holes 322 on the base plate 32. Then, by passing the locking rod 61 through the second insertion hole 531 and extending into the first insertion hole 322, the position of the grout-blocking component 5 can be fixed to prevent the grout-blocking component 5 from loosening and shifting its position during the injection of concrete grout.

[0055] To facilitate the rapid assembly of the grout-blocking component 5 with the side formwork 3 and to strengthen the assembly, each locking rod 61 is fixedly connected by a fastener 62. The fastener 62 is a fastening strip that extends along the length direction parallel to the strip opening 31. Both ends of the fastener 62 are detachably fixed to the base plate 32 by fastening bolts 63. Thus, after the grout-blocking component 5 is assembled on the side formwork 3, the fastening strip is pressed against the top of the grout-blocking component 5's insertion plate 53, while the locking rod 61 below the fastening strip passes through the second insertion hole 531 and extends into the first insertion hole 322, allowing the grout-blocking component 5 to insert and cooperate with the base plate 32. Then, the fastening bolts 63 are screwed into both ends of the fastener 62, fixing the fastener 62 to the base plate 32. At the same time, the fastener 62 locks the insertion plate 53 to the base plate 32 and effectively prevents the grout-blocking component 5 from moving, ensuring the stability of the overall structure of the side formwork assembly formed by the grout-blocking component 5 and the side formwork 3 after assembly.

[0056] A further improvement is that the side template 3 includes a detachably connected upper template 33 and lower template 34. The bottom surface of the upper template 33 is provided with a lower recess 331, and the top surface of the lower template 34 is provided with an upper recess 341. The upper recess 341 and the lower recess 331 are combined to form a strip-shaped opening 31.

[0057] Specifically, such as Figure 8As shown, the upper template 33 and the lower template 34 are detachably fixedly connected by two fixing bolts 35. The lower template 34 is welded and fixed above the base plate 32, and the base plate 32 is integrally formed on the lower template 34.

[0058] With the above structure, during production, the upper template 33 can be removed from the lower template 34 in advance, and then the steel mesh frame 2 can be installed. Each grout-blocking component 5 is connected to the lower template 34, so that the grout-blocking block 51 fits against the bottom surface of the upper recess 341. After locking the position of each grout-blocking component 5 by the locking component 6, the upper template 33 is installed on the lower template 34 by the fixing bolts 35 to form a complete side template 3. Then, concrete grout is injected into the pouring cavity. After the concrete grout solidifies and forms, it is integrally connected with the steel mesh frame 2, and the product can be obtained.

[0059] After the product is formed, remove the upper template 33, unscrew the locking component 6, unscrew the fastening bolt 63, remove the fastener 62 and locking rod 61, and then remove the grout blocking component 5, so as to facilitate the removal of the formed precast composite slab product.

[0060] Second Embodiment

[0061] like Figures 9-14 As shown, the production mold for the precast composite slab in the second embodiment of the present invention is based on the first embodiment, except that the grout blocking component 5 includes two grout blocking blocks 51 that are slidably connected relative to each other along the length direction of the strip opening 31. Both grout blocking blocks 51 are connected to a locking component 6, which is used to lock the corresponding grout blocking block 51 to the inside of the strip opening 31; the perforation 41 is formed by the enclosing of two adjacent grout blocking components 5.

[0062] Compared to the first embodiment, the grout-blocking component 5 in this embodiment includes two grout-blocking blocks 51 that are slidably connected to each other, and both grout-blocking blocks 51 are connected to a locking component 6 that locks their own position inside the strip opening 31, thereby making the length of the grout-blocking component 5 adjustable and easy to lock the length of the grout-blocking component 5.

[0063] Since the length of the grout-blocking component 5 in this embodiment is adjusted by two relatively slidingly connected grout-blocking blocks 51, thereby controlling the position and number of perforations 41 in the grout-blocking strip 4, compared with the first embodiment which relies on the position and distribution of the first grout-blocking component 5, the second grout-blocking component 5 and the third grout-blocking component 5 to adjust the position and number of perforations 41, the adjustment method is relatively limited. This embodiment can achieve stepless adjustment of the position of perforations 41, that is, the distribution of the position of perforations 41 in this embodiment is more diverse and can be applied to the production of more different precast composite slabs.

[0064] To achieve stepless adjustment of the length of the grout-blocking component 5, the grout-blocking component 5 includes two grout-blocking blocks 51 that are slidably connected to each other, such as... Figure 13 and Figure 14As shown, the two plugging blocks 51 are an outer plugging block 51 and an insert plugging block 51. The outer plugging block 51 is U-shaped, and a sliding opening 512 extending parallel to the length of the strip opening 31 is provided on the side wall of the outer plugging block 51 away from the pouring cavity. The two sides of the insert plugging block 51 are sealed and fitted with the two inner side walls of the outer plugging block 51. The top and bottom surfaces of both the insert plugging block 51 and the outer plugging block 51 are sealed and fitted with the upper and lower inner walls of the strip opening 31, respectively. The insert plugging block 51 is threadedly connected to a connecting screw 54. The outer diameter of the connecting screw 54 is the same as the width of the sliding opening 512, so that the insert plugging block 51 and the outer plugging block 51 can satisfy the function of relative sliding connection. The connecting screw 54 is threadedly connected to a locking sleeve 55 to lock the outer plugging block 51 and the insert plugging block 51.

[0065] After adopting the above structure, loosen the locking sleeve 55, and slide the connecting screw 54 along the slide 512 to make the outer grout block 51 and the plug grout block 51 slide relative to each other to adjust the length of the grout block 5. Then tighten the locking sleeve 55 to lock the outer grout block 51 and the plug grout block 51 together, thereby fixing the length of the grout block 5.

[0066] For the end plugging component 5, of the two end faces of the outer plugging block 51 and the insert plugging block 51 that are far apart from each other, one end face is used to seal the connection with the inner wall of the end of the strip-shaped opening 31, and the other end face is provided with a semi-cylindrical butt notch 511 with an inner diameter the same as the outer diameter of the reinforcing steel bar 21.

[0067] For the remaining grout-blocking components 5, semi-cylindrical butt joints 511 with the same inner diameter are provided at both ends of the outer grout-blocking block 51 and the insert grout-blocking block 51 that are far apart from each other. When any two grout-blocking components 5 (including the two grout-blocking components 5 at the ends mentioned above and the grout-blocking components 5 at the remaining ends) are spliced ​​together, the butt joints 511 at the adjacent ends are directly connected, forming a cylindrical through hole 41 for the reinforcing steel bar 21 to pass through. There are three ways to form the through hole 41: first, two... In the grout-blocking component 5, the outer grout-blocking blocks 51 are fitted together and connected, and the mating notches 511 on the two outer grout-blocking blocks 51 form a through hole 41; secondly, the insert grout-blocking blocks 51 in the two grout-blocking components 5 are fitted together and connected, and the mating notches 511 on the two insert grout-blocking blocks 51 form a through hole 41; thirdly, in the two grout-blocking components 5, the mating notch 511 on the insert grout-blocking block 51 of one of them is connected to the mating notch 511 on the outer grout-blocking block 51 of the other to form a through hole 41.

[0068] When the butt joints 511 on the two plugging blocks 51 are joined to form a perforation 41, the inner wall of the perforation 41 can be sealed and fitted with the circumferential outer edge near the end of the reinforcing bar 21 to prevent the concrete slurry from flowing out from the perforation 41 after it is injected into the pouring cavity.

[0069] A further improvement is that the base plate 32 is provided with a clamping groove 321 extending along the length of the strip opening 31, and the locking bolt 65 is clamped between the two inner sidewalls of the clamping groove 321.

[0070] like Figures 11-14 As shown, the clamping groove 321 extends parallel to the length of the strip opening 31 and is flush with the end of the base plate 32. After the grouting block 51 of the grouting component 5 is inserted into the strip opening 31, the grouting component 5 is slid along the strip opening 31. After adjusting the position of the grouting block 51, the locking bolt 65 is screwed downward inside the locking tube 64, so that the bottom end of the locking bolt 65 extends into the clamping groove 321. The bottom end of the locking bolt 65 abuts against the bottom of the clamping groove 321, and the outer edge of the bottom end fits against the two inner side walls of the clamping groove 321, thereby fixing the horizontal position of the clamping groove 321. The upper and lower surfaces of the grouting block 51 fit against the inner top wall and inner bottom wall of the strip opening 31, thereby locking the position of the grouting block 51 and preventing the grouting block 51 from shifting and loosening when concrete grout is injected into the pouring cavity, which would cause the concrete grout to overflow and affect the final molding quality of the product.

[0071] After the product is formed, rotate the locking bolt 65 upward to disengage the locking bolt 65 from the clamping groove 321. Then move the locking bolt 65 and the grout blocking component 5 away from the pouring cavity so that the grout blocking component 5 disengages from the reinforcing steel bar 21. Then remove the upper template 33 from the lower template 34 and the formed precast composite slab product can be taken out.

[0072] Third Embodiment

[0073] like Figure 15 and Figure 16 As shown, the production mold for the precast composite slab in the third embodiment of the present invention is based on the second embodiment, except that the bottom mold 1 is connected to a lifting component 7, which is used to adjust the depth of the casting cavity.

[0074] Specifically, the base 8 has four corner supports 81 fixed below, so that the top surface of the base 8 is at a certain height from the ground. The center of the base 8 has an opening, and the projection of the opening on the horizontal plane coincides with the projection of the bottom mold 1 on the horizontal plane. The inner wall of the opening has a downwardly extending flange 82, so that the lower circumferential outer edge of the bottom mold 1 is sealed and fitted with the inner wall of the flange 82, and the lower circumferential outer edge of the bottom mold 1 is sealed and fitted with the four side templates 3.

[0075] There are four lifting components 7, which are respectively set at the bottom corners of the bottom mold 1. The lifting components 7 are lifting cylinders, whose cylinders are fixed on the ground, and whose piston rods extend upward and whose top ends are fixedly connected to the bottom surface of the bottom mold 1.

[0076] The bottom mold 1 can be driven to move vertically by the lifting cylinder, thereby adjusting the distance between the bottom mold 1 and the steel mesh frame 2, and adjusting the depth of the casting cavity to produce precast composite slabs of different thicknesses and sizes, further expanding the range of product types that the mold can produce, and avoiding the increase in production costs caused by changing the mold.

[0077] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A production mold for precast composite slabs, comprising: The mold body includes a horizontal bottom mold (1) and side mold assemblies disposed on the four sides of the bottom mold (1) and enclosing the bottom mold (1) to form an upward-opening casting cavity; The steel reinforcement mesh (2) includes reinforcing bars (21) that penetrate the side formwork assembly and steel trusses (22) connected to the reinforcing bars (21); The side mold assembly is characterized in that it comprises: Side template (3), the side template (3) is provided with a strip opening (31), the side template (3) and the strip opening (31) both extend along the length direction of the corresponding side wall of the bottom mold (1); A grout-blocking strip (4) extends along the length direction of the strip-shaped opening (31) and has perforations (41) distributed along its own length direction and whose position and number are adjustable. The perforations (41) allow the reinforcing steel bar (21) to pass through in a sealed manner so that the grout-blocking strip (4) and the reinforcing steel bar (21) fill the strip-shaped opening (31). The grout-blocking strip (4) includes grout-blocking components (5) connected sequentially along its own length direction.

2. The production mold for precast composite slabs according to claim 1, characterized in that: The perforation (41) is formed by two adjacent plugging components (5).

3. The production mold for precast composite slabs according to claim 2, characterized in that: The grout-blocking component (5) includes a grout-blocking block (51) that is slidably connected to the side template (3) along the length direction of the strip opening (31). The grout-blocking component (5) is connected to a locking component (6), which is used to lock the grout-blocking block (51) to the inside of the strip opening (31).

4. The production mold for precast composite slabs according to claim 3, characterized in that: Each grout-blocking component (5) has the same length. The locking assembly (6) includes a locking rod (61). The grout-blocking component (5) is inserted into the side template (3) through the locking rod (61).

5. The production mold for precast composite slabs according to claim 4, characterized in that: The locking assembly (6) further includes a fastener (62) fixedly connected to the locking rod (61), and the fastener (62) is fixedly connected to the side template (3) by a fastening bolt (63).

6. The production mold for precast composite slabs according to claim 2, characterized in that: The grout-blocking component (5) includes two grout-blocking blocks (51) that are slidably connected to each other along the length direction of the strip opening (31). Each of the two grout-blocking blocks (51) is connected to a locking component (6), which is used to lock the corresponding grout-blocking block (51) to the inside of the strip opening (31).

7. The production mold for precast composite slabs according to claim 6, characterized in that: The locking assembly (6) includes a locking tube (64) connected to the grout blocking block (51) and a locking bolt (65) threadedly connected to the locking tube (64). The side template (3) is provided with a base plate (32) on the side away from the pouring cavity, and the locking bolt (65) abuts against the base plate (32).

8. The production mold for precast composite slabs according to claim 7, characterized in that: The base plate (32) is provided with a clamping groove (321) extending along the length direction of the strip opening (31), and the locking bolt (65) is clamped between the two inner sidewalls of the clamping groove (321).

9. The production mold for precast composite slabs according to claim 1, characterized in that: The side template (3) includes a detachably connected upper template (33) and lower template (34). The bottom surface of the upper template (33) is provided with a lower recess (331), and the top surface of the lower template (34) is provided with an upper recess (341). The upper recess (341) and the lower recess (331) are combined to form the strip opening (31).

10. The production mold for precast composite slabs according to claim 1, characterized in that: The bottom mold (1) is connected to a lifting assembly (7), which is used to adjust the depth of the casting cavity.

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