A splicing and fixing structure for integrated thermal insulation and soundproofing of floor slabs using hollow, non-removable formwork.

Abstract

This invention discloses a splicing and fixing structure for an integrated hollow, non-removable formwork for floor slab thermal insulation and soundproofing, relating to the field of non-removable formwork technology. It includes: a shell, which is a hollow cuboid structure; and a pulling assembly, of which several are installed inside the shell. Each pulling assembly includes a pulling rod extending to the outside of the shell and a traction drive mechanism. The pulling rod is used to connect with the hollow, non-removable formwork. By coordinating the pulling assembly, the mixing box, and the injection assembly, this invention allows for simultaneous triggering of the cutting assembly to pierce the sealing membrane at the end of the glue storage tube as the driving screw rotates and brings the two hollow, non-removable formwork panels closer together. This also causes the formwork end face to be squeezed against the push rod, and the glue is evenly filled into the joint through the glue outlet. This structure achieves integrated operation of formwork tightening and fixing with joint glue injection and sealing, avoiding waste caused by premature glue curing and significantly improving splicing construction efficiency and sealing reliability.

Description

Technical Field

[0001] This invention relates to the field of building formwork technology, specifically to a splicing and fixing structure for an integrated hollow formwork for floor insulation and soundproofing that requires no dismantling. Background Technology

[0002] With the increasing emphasis on energy conservation and green building concepts, the thermal insulation and sound insulation performance of floor slabs has become a key requirement in modern architectural design. Currently, common floor slab construction methods often involve laying insulation and sound insulation layers on top of cast-in-place concrete slabs, or using precast composite formwork to achieve these functions. However, traditional composite formwork structures are mostly solid or single-layer functional structures, which suffer from problems such as high self-weight, limited thermal insulation and sound insulation performance, and complex construction procedures.

[0003] To address this, the industry has developed non-removable formwork, especially the hollow non-removable formwork developed by our company, which integrates thermal insulation and sound insulation functions, enabling multiple functions such as thermal insulation, sound insulation, and formwork support in a single construction phase. This hollow non-removable formwork consists of hollow sound-insulating composite insulation boards, reinforcing ribs, high-strength inorganic boards, and insulation filling layers, exhibiting excellent structural performance and construction efficiency.

[0004] However, in actual construction, the splicing and fixing of multiple hollow, non-removable formwork panels becomes a critical link affecting the overall performance. Existing splicing methods mostly employ bolt connections, snap-fit ​​connections, or on-site adhesive injection. Due to the structure and material characteristics of our company's hollow, non-removable formwork, using two-component polyurethane adhesive to fill and seal the joints achieves excellent sealing performance, effectively preventing cement mortar from entering the joints and causing cracking and leakage. However, current construction processes require construction workers to mix the two adhesive components on-site. If the adhesive application is not timely, it will harden, leading to waste of adhesive materials. Furthermore, manual application only allows the adhesive to be applied to the joints, making it difficult for the adhesive to penetrate evenly, especially in the deeper parts of the joints where it often fails to fill completely, forming cavities. Later, during concrete pouring, cement mortar easily seeps into these cavities, hardening and forming hard spots, leading to stress concentration and cracking at the joints. Current construction methods not only have poor construction results but are also cumbersome and inefficient. Therefore, a splicing and fixing structure with integrated hollow, non-removable formwork for floor insulation and soundproofing is needed to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a splicing and fixing structure for an integrated hollow, non-removable formwork for floor insulation and soundproofing, in order to solve the problems existing in the prior art mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A splicing and fixing structure for integrated hollow, non-removable formwork for floor slab thermal insulation and soundproofing includes: The shell is a hollow cuboid structure; A pulling assembly is provided, and is installed inside the housing. The pulling assembly includes a pulling rod that can extend to the outside of the housing and a traction drive mechanism. The pulling rod is used to connect with the hollow non-removable template and pulls the hollow non-removable templates on both sides of the housing closer to each other through the traction drive mechanism. A mixing box is installed on the upper and lower end faces inside the housing. The upper and lower end faces of the mixing box are evenly provided with glue outlet holes, which are connected to the interior of the mixing box. The mixing box is used for mixing the two components of a two-component polyurethane adhesive. The glue injection assembly has several through holes on the left and right side walls of the glue mixing box. The front end of the glue injection assembly is sealed and fixedly connected to the through holes. When the hollow, non-removable template moves close to the shell, it squeezes the glue injection assembly, so that the glue in the glue injection assembly is injected into the glue mixing box. A cutting assembly is installed inside the mixing box. The cutting assembly is driven by the pulling assembly and is used to cut the glue dispensing end of the glue injection assembly during the pulling process of the pulling assembly pulling the hollow non-removable template.

[0007] Preferably, the traction drive mechanism includes a screw, a drive block, and a connecting rod rotatably connected to the front and rear end faces of the housing. The drive block has a threaded hole in the middle and is threadedly connected to the screw. The drive block has grooves on both sides, and a connecting rod is rotatably connected in the groove. The other end of the connecting rod is rotatably connected to the traction rod. The movement of the drive block can drive the traction rod to extend and retract on the housing.

[0008] Preferably, the glue dispensing assembly includes a cylindrical glue storage tube and a push rod. The end of the glue storage tube located on one side of the mixing box is provided with a sealing film that is easy to cut and puncture. The glue storage tube stores one component of the two-component polyurethane glue. The rubber storage tube is also equipped with a piston, and a push rod for moving the actuator is connected to the piston. The push rod initially protrudes from the outer wall of the housing.

[0009] Preferably, the cutting assembly includes a sliding frame slidably connected inside the mixing box, and one end of the sliding frame is connected to the drive block via a mounting base; The sliding frame is equipped with several blades, which are positioned on one side of the glue storage tube and are used to cut and puncture the sealing film during movement.

[0010] Preferably, one end of the pull rod is connected to a pull ring, and the hollow, non-removable template is provided with a splicing hook, which can be quickly hooked and connected to the pull ring.

[0011] Preferably, the end of the screw is provided with a hexagonal end.

[0012] Preferably, the blade is triangular in shape, with the triangular tip of the blade pointing towards the middle of the two ends of the glue reservoir.

[0013] Preferably, the internal cavities of the shell are filled with thermal insulation material.

[0014] Preferably, the left and right sides of the housing are provided with grooves for the pull ring and the end of the push rod to enter.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, through the coordinated arrangement of a tensioning component, a mixing box, and an injection component, simultaneously triggers a cutting component to pierce the sealing membrane at the end of the adhesive storage tube as the drive screw rotates and brings the two hollow, non-removable templates closer together. This causes the template end face to be squeezed against the push rod, automatically feeding the two components of the two-component polyurethane adhesive into the mixing box for mixing, and then uniformly filling the joint through the dispensing hole. This structure achieves integrated operation of template tensioning and joint sealing, eliminating the need for manual on-site adhesive mixing or separate adhesive application, avoiding waste caused by premature adhesive curing, and ensuring uniform adhesive filling from the inside out, significantly improving splicing construction efficiency and sealing reliability.

[0016] 2. This invention can form a continuous and dense polyurethane adhesive sealing layer in the joint, effectively preventing cement mortar from seeping into the joint and causing cracking or leakage. At the same time, the pull ring and the splicing hook on the hollow, non-removable template can be quickly connected. The tightening connection and glue injection process can be achieved by driving the screw with a tool, which is convenient to operate. This structure not only improves the connection strength and integrity of adjacent templates, but also further ensures the long-term stability of the integrated thermal insulation and sound insulation performance of the floor slab. Attached Figure Description

[0017] Figure 1 This is a front-view stereoscopic structural diagram of the present invention.

[0018] Figure 2 This is a rear-view stereoscopic structural diagram of the present invention.

[0019] Figure 3 This is a top view cross-sectional structural diagram of the present invention.

[0020] Figure 4 This is a front cross-sectional view of the present invention.

[0021] Figure 5 This is a schematic diagram of the distribution structure of the glue injection component of the present invention.

[0022] Figure 6 For the present invention Figure 5A magnified schematic diagram of the structure at point A in the middle.

[0023] Figure 7 This is a schematic diagram of the integrated hollow, non-removable formwork structure for floor slab thermal insulation and soundproofing in this invention.

[0024] Figure 8 This is a schematic diagram of the fixed structure connecting two hollow, non-removable templates according to the present invention.

[0025] In the diagram: 1. Housing; 2. Pulling assembly; 21. Screw; 22. Drive block; 23. Pulling rod; 24. Pulling ring; 25. Connecting rod; 3. Mixing box; 4. Dispensing hole; 5. Injection assembly; 51. Glue storage tube; 52. Push rod; 6. Cutting assembly; 61. Sliding frame; 62. Mounting base; 63. Blade; a. Hollow sound-insulating composite insulation board; b. Reinforcing ribs; c. High-strength inorganic board; d. Insulation filling layer; e. Splicing hooks. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0027] like Figure 7 As shown, the integrated hollow, non-removable formwork for floor slab insulation and soundproofing is a new type of non-removable formwork developed by our company. It consists of a hollow sound-insulating composite insulation board (a), reinforcing ribs (b), a high-strength inorganic board (c), and an insulation filling layer (d). The hollow sound-insulating composite insulation board (a) typically consists of an inorganic insulation material layer and a hollow sound-insulating board. The reinforcing ribs (b) are formed by mortar solidification, and splicing hooks (e) are pre-embedded at both ends of the reinforcing ribs during processing. This integrated hollow, non-removable formwork for floor slab insulation and soundproofing combines both insulation and soundproofing performance.

[0028] To improve the connection strength and sealing performance between adjacent hollow, non-removable formwork panels, this invention provides a splicing and fixing structure to ensure the thermal and sound insulation performance of the integrated thermal and sound insulation hollow, non-removable formwork panel after construction, thereby improving the construction efficiency of the hollow, non-removable formwork panel.

[0029] The insulation filling layer d and the reinforcing rib b of the hollow non-removable template are slightly shorter at both ends than the lengths of the hollow sound insulation composite insulation board a and the high-strength inorganic board c. Rectangular grooves are formed at both ends of the hollow non-removable template. These rectangular grooves are used for the fitting and installation of the splicing and fixing structure in this invention.

[0030] Please see Figure 1-8 The present invention provides the following technical solutions: A splicing and fixing structure for an integrated hollow, non-removable formwork for floor slab insulation and soundproofing includes: a shell 1, which is a hollow cuboid structure with a length equal to the connecting end length of the hollow, non-removable formwork. The shell 1 is made of high-strength engineering plastic or lightweight metal alloy, possessing sufficient structural strength to withstand the tension generated during the pulling process. Its hollow internal design provides installation space for the pulling assembly 2 and the adhesive injection assembly 5. The outer surface of the shell 1 may also have anti-slip textures or a concave-convex structure to enhance friction with the inner wall of the groove on the end face of the hollow, non-removable formwork, preventing displacement of the shell 1 between the formwork after splicing. The internal gaps of the shell 1 are filled with insulation material. Using insulation material to fill the gaps effectively blocks the thermal bridging effect through the splicing and fixing structure itself, ensuring the continuity of the entire floor slab insulation layer. Insulation materials such as vertical rock wool, glass wool, and aerogel felt can be used to improve the insulation and soundproofing performance of this splicing and fixing structure.

[0031] The number of traction components 2 is the same as the number of splicing hooks e set on the hollow non-removable template, and is installed inside the housing 1. The traction component 2 includes a traction rod 23 that can extend to the outside of the housing 1 and a traction drive mechanism. The traction rod 23 is used to connect with the hollow non-removable template, and the traction drive mechanism pulls the hollow non-removable templates on both sides of the housing 1 closer to each other.

[0032] The traction drive mechanism includes a screw 21, a drive block 22, and a connecting rod 25 rotatably connected to the front and rear end faces of the housing 1. The screw 21 has a hexagonal end for easy rotation using a tool. The screw 21 is a trapezoidal threaded screw with self-locking properties, maintaining tension after the drive stops to prevent the template from springing back before the adhesive cures. The drive block 22 has a threaded hole in the middle and is threadedly connected to the screw 21. Rotation of the screw 21 moves the drive block 22. The drive block 22 has grooves on both sides, and the connecting rod 25 is rotatably connected within the grooves. The other end of the connecting rod 25 is rotatably connected to the traction rod 23. Movement of the drive block 22 causes the traction rod 23 to extend and retract on the housing 1.

[0033] One end of the tie rod 23 is connected to a tie ring 24, and the hollow, non-removable template is equipped with a splicing hook e, which can be quickly hooked and connected with the tie ring 24. Through the cooperative design of the tie ring 24 and the splicing hook e, the hollow, non-removable template can be quickly connected to the splicing and fixing structure during the splicing construction, thereby improving construction efficiency.

[0034] The mixing box 3 is installed on the upper and lower end faces inside the housing 1. The upper and lower end faces of the mixing box 3 are evenly provided with glue outlet holes 4. The glue outlet holes 4 are connected to the inside of the mixing box 3. The mixing box 3 is used to mix the two components of the two-component polyurethane adhesive and to extrude the mixed two-component polyurethane adhesive through the glue outlet holes 4.

[0035] The glue injection component 5 has several through holes on the left and right side walls of the glue mixing box 3. The front end of the glue injection component 5 is sealed and fixedly connected to the through holes. When the hollow non-removable template moves close to the shell 1, it squeezes the glue injection component 5, so that the glue in the glue injection component 5 is injected into the glue mixing box 3.

[0036] The glue dispensing assembly 5 includes a cylindrical glue storage tube 51 and a push rod 52. The end of the glue storage tube 51 located on one side of the mixing box 3 is provided with a sealing film that is easy to cut and puncture. The sealing film is preferably an aluminum-plastic composite film or a polyethylene film with a thickness of 0.05-0.15mm. It can effectively isolate air during storage to prevent glue deterioration and can be easily punctured by the blade 63. The glue storage tube 51 stores one component of the two-component polyurethane glue. In this embodiment, the glue storage tube 51 located on the left side of the shell 1 stores component A, the main agent, and the glue storage tube 51 located on the right side of the shell 1 stores component B, the curing agent. The two components must be mixed to undergo a cross-linking reaction and cure, thereby achieving the bonding function.

[0037] A piston is also installed inside the glue storage tube 51, and a push rod 52 for moving the actuator is connected to the piston. The push rod 52 initially protrudes from the outer wall of the housing 1. This structure enables the mixing and extrusion of glue during the process of two hollow, non-removable templates coming close together, which is beneficial to improving the filling effect of the joint and construction efficiency.

[0038] The left and right sides of the housing 1 are provided with grooves for the ends of the pull ring 24 and push rod 52 to enter. The design of the grooves allows the pull ring 24 and push rod 52 to retract completely into the grooves after the hollow, non-removable template comes into contact with the surface of the housing 1, thus avoiding affecting the splicing of the two hollow, non-removable templates.

[0039] The cutting component 6 is installed inside the mixing box 3. The cutting component 6 is driven by the pulling component 2 and is used to cut the glue dispensing end of the glue injection component 5 during the pulling process of the pulling component 2 on the hollow non-removable template. The cutting component 6 includes a sliding frame 61 slidably connected inside the mixing box 3. One end of the sliding frame 61 is connected to the driving block 22 through the mounting base 62.

[0040] Several blades 63 are mounted on the sliding frame 61. The blades 63 are positioned on one side of the glue reservoir tube 51 and are used to cut and puncture the sealing film during movement. The blades 63 are triangular in shape, with the triangular tip pointing towards the middle of the ends of the two glue reservoir tubes 51. This triangular design facilitates the blades 63 entering between the two glue reservoir tubes 51 and cutting and puncturing their ends, allowing the glue to be squeezed out. The blades 63 can be made of stainless steel with a cutting angle of 15° to 30°, ensuring a clean and crisp cut in the sealing film and smooth glue flow.

[0041] The working process of this invention is as follows: When it is necessary to splice two adjacent hollow, non-removable formwork panels, firstly, the two hollow, non-removable formwork panels are hoisted onto the building beam, and then the splicing fixing structure is hoisted between the two hollow, non-removable formwork panels. Construction workers then attach the splicing hooks (e) on the hollow, non-removable formwork panels to the corresponding tension rings (24) on the splicing fixing structure.

[0042] After the splicing hook e is connected to the traction ring 24, the construction personnel use an electric or starter wrench to drive the screw 21 to rotate. The screw 21 drives the drive block 22 to move under the action of the thread. The drive block 22 drives the traction rod 23 to retract into the shell 1 through the connecting rod 25, thereby pulling the hollow non-removable templates on both sides of the shell 1 closer to each other.

[0043] As the two hollow, non-removable templates move closer together, the drive block 22 drives the sliding frame 61 to slide within the mixing box 3. The sliding frame 61 moves the blade 63, piercing the sealing film at the end of the glue storage tube 51. When the end face of the hollow, non-removable template contacts the push rod 52, the movement of the hollow, non-removable template pushes the push rod 52. The push rod 52 then drives the piston inside the glue storage tube 51 to squeeze the glue, allowing the two components of the glue to enter the mixing box 3 for mixing.

[0044] The mixed adhesive is extruded through the adhesive outlet 4 on the housing 1 and enters the joint between the two hollow, non-removable templates, sealing the joint and improving the connection strength between the two adjacent hollow, non-removable templates. The finished joint is as follows: Figure 8 As shown.

[0045] By coordinating the tensioning component 2, the mixing box 3, and the injection component 5, as the drive screw 21 rotates and brings the two hollow, non-removable templates closer together, the cutting component 6 is simultaneously triggered to pierce the sealing film at the end of the glue storage tube 51. This causes the template end face to be squeezed against the push rod 52, automatically feeding the two components of the two-component polyurethane adhesive into the mixing box 3 for mixing, and then evenly filling the joint through the glue outlet 4. This structure achieves integrated operation of template tensioning and joint sealing, eliminating the need for manual on-site glue mixing or separate glue application, avoiding waste caused by premature glue curing, and ensuring even glue filling from the inside out, significantly improving splicing construction efficiency and sealing reliability.

[0046] By forming a continuous and dense polyurethane adhesive sealant layer in the joints, cement mortar is effectively prevented from seeping into the joints, causing cracking or leakage. Simultaneously, the tension ring 24 and the splicing hook e on the hollow, non-removable formwork allow for quick connection. Tightening and adhesive injection are achieved by driving the screw 21 with a tool, making operation convenient. This structure not only improves the connection strength and integrity of adjacent formwork but also further ensures the long-term stability of the floor slab's integrated thermal and sound insulation performance. Because the two-component polyurethane adhesive retains a certain degree of elasticity after curing, it can undergo slight deformation following the thermal expansion and contraction of the floor slab, preventing cracking due to temperature changes. This ensures that the thermal and sound insulation performance of the floor slab does not degrade throughout its entire service life.

[0047] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A splicing and fixing structure for integrated hollow, non-removable formwork for floor slab thermal insulation and soundproofing, characterized in that, include: The shell (1) is a hollow cuboid structure; The traction assembly (2) is provided in several parts and installed inside the housing (1). The traction assembly (2) includes a traction rod (23) that can extend to the outside of the housing (1) and a traction drive mechanism. The traction rod (23) is used to connect with the hollow non-removable template and pull the hollow non-removable templates on both sides of the housing (1) closer to each other through the traction drive mechanism. Mixing box (3), the mixing box (3) is installed on the upper and lower end faces inside the shell (1), the upper and lower end faces of the mixing box (3) are evenly provided with glue outlet holes (4), the glue outlet holes (4) are connected to the inside of the mixing box (3), the mixing box (3) is used for mixing the two components of two-component polyurethane glue; The glue injection assembly (5) has several through holes on the left and right side walls of the glue mixing box (3). The front end of the glue injection assembly (5) is sealed and fixedly connected to the through holes. When the hollow non-removable template moves close to the shell (1), it squeezes the glue injection assembly (5) so that the glue in the glue injection assembly (5) is injected into the glue mixing box (3). The cutting component (6) is installed inside the mixing box (3). The cutting component (6) is driven by the pulling component (2) and is used to cut the glue outlet end of the glue injection component (5) during the pulling process of the pulling component (2) pulling the hollow non-removable template.

2. The splicing and fixing structure of the integrated hollow non-removable formwork for floor slab thermal insulation and soundproofing according to claim 1, characterized in that: The traction drive mechanism includes a screw (21), a drive block (22) and a connecting rod (25) rotatably connected to the front and rear end faces of the housing (1). The drive block (22) has a threaded hole in the middle and is threadedly connected to the screw (21). The drive block (22) has grooves on both sides, and a connecting rod (25) is rotatably connected in the groove. The other end of the connecting rod (25) is rotatably connected to the traction rod (23). The movement of the drive block (22) can drive the traction rod (23) to extend and retract on the housing (1).

3. The splicing and fixing structure of the integrated hollow non-removable formwork for floor slab thermal insulation and sound insulation as described in claim 2, characterized in that: The glue injection assembly (5) includes a cylindrical glue storage tube (51) and a push rod (52). The end of the glue storage tube (51) located on the side of the mixing box (3) is provided with a sealing film that is easy to cut and puncture. The glue storage tube (51) stores one of the components of the two-component polyurethane glue. The rubber storage tube (51) is also provided with a piston, and a push rod (52) for moving the actuator is connected to the piston. The push rod (52) initially protrudes from the outer wall of the housing (1).

4. The splicing and fixing structure of the integrated hollow non-removable formwork for floor slab thermal insulation and sound insulation as described in claim 3, characterized in that: The cutting assembly (6) includes a sliding frame (61) slidably connected inside the mixing box (3), and one end of the sliding frame (61) is connected to the drive block (22) via a mounting base (62). The sliding frame (61) is equipped with several blades (63), which are located on one side of the glue storage tube (51) and are used to cut and puncture the sealing film during movement.

5. The splicing and fixing structure of a hollow, non-removable formwork integrated with floor insulation and soundproofing according to claim 2, characterized in that: One end of the traction rod (23) is connected to a traction ring (24), and the hollow, non-removable template is provided with a splicing hook (e), which can be quickly hooked and connected to the traction ring (24).

6. The splicing and fixing structure of the integrated hollow non-removable formwork for floor slab thermal insulation and sound insulation according to claim 2, characterized in that: The screw (21) has a hexagonal end.

7. The splicing and fixing structure of the integrated hollow non-removable formwork for floor slab thermal insulation and sound insulation according to claim 4, characterized in that: The blade (63) is triangular in shape, with the triangular tip of the blade (63) pointing towards the middle position of the ends of the two glue reservoirs (51).

8. The splicing and fixing structure of the integrated hollow non-removable formwork for floor slab thermal insulation and sound insulation according to claim 1, characterized in that: The internal cavities of the shell (1) are filled with thermal insulation material.

9. The splicing and fixing structure of a hollow, non-removable formwork integrated with thermal insulation and soundproofing for floor slabs according to claim 7, characterized in that: The left and right sides of the housing (1) are provided with grooves for the ends of the pull ring (24) and push rod (52) to enter.

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