Adjustable mold for making prefabricated sill capping
By designing adjustable connectors and templates of specific shapes, the problems of poor mold adaptability and rainwater leakage were solved, enabling flexible mold adjustment and construction convenience, and ensuring the quality and waterproof effect of precast window sill capping.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- INNER MONGOLIA ZHONGLAN CONSTRUCTION ENGINEERING CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-21
AI Technical Summary
The existing molds cannot be adjusted according to the actual length requirements of the window, have poor adaptability, and the shape of the casting space is unreasonable, resulting in the precast blocks not meeting the construction requirements.
A mold with adjustable connectors was designed. The adjustable connectors, consisting of a clamping device, a connecting plate, a positioning plate, a limiting device, and a guide rod, enable the mold to be adjusted and fixed in length. Combined with the inclined and vertical sections of the bottom template, rainwater is diverted and the window frame is positioned.
It enables flexible adjustment of the mold to adapt to different window lengths, prevents rainwater leakage, improves construction efficiency and the convenience of window frame installation, and ensures the sealing of the joints.
Smart Images

Figure CN224527535U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of construction technology, specifically to an adjustable mold for manufacturing precast window sill caps. Background Technology
[0002] Precast concrete capping for exterior window sills is a construction technique that uses precast concrete components for the window sill area of a building's exterior walls. Since the window sill is a weak point in the waterproofing of the exterior wall, rainwater can easily seep into the room through the gap between the window sill and the wall. Precast capping has the function of resisting seepage and waterproofing, and blocking the leakage path. Precast concrete capping can be made in advance in a factory or on-site prefabrication yard, and then transported directly to the construction site for installation, reducing the waiting time for on-site concrete pouring and greatly shortening the construction cycle.
[0003] The existing patent CN202420803883.9 discloses a pre-formed mold for a window sill pressure cap, which includes: a long side mold (1), the side of which is trapezoidal; a first sealing plate (2), which is connected to the short side of the side of the long side mold (1); a second sealing plate (3), which is connected to the long side of the side of the long side mold (1); threaded holes (4) are opened on both sides of the long side mold (1), and the first sealing plate (2), the second sealing plate (3) and the threaded holes (4) are connected by screws (5).
[0004] The technical problems include: all molds used are custom-made and cannot be adjusted according to the actual length requirements of the window, resulting in poor adaptability and inconvenience in use; the performance is limited and the shape of the mold casting space is unreasonable, resulting in the cast precast blocks not meeting the construction requirements. Utility Model Content
[0005] The purpose of this utility model is to provide an adjustable mold for manufacturing prefabricated window sill caps.
[0006] This utility model is implemented by the following technical solution: an adjustable mold for manufacturing precast window sill caps, which includes two vertically arranged and parallel long templates, a horizontally arranged bottom template between the two long templates, two vertically arranged short templates on the top end face of the bottom template, the side walls of the short templates respectively movably abutting against the inner walls of the two long templates, the short templates being perpendicular to the long templates, and the bottom template, the two long templates and the two short templates forming a casting space;
[0007] One of the short templates has its outer side wall connected to the long template via a positioning member, and the other short template is connected to the long template via an adjustable connector.
[0008] The adjustable connector includes a clamping device, a connecting plate, a positioning plate, a first sleeve, a limiting device, and a guide rod;
[0009] A clamping device is detachably connected between the ends of the two long templates;
[0010] A horizontally arranged connecting plate is fixed to the middle of the screw of the clamping device, and a vertically arranged positioning plate is fixed to the other end of the connecting plate. The inner wall of the positioning plate is movably abutting against one side end of the two long templates. A horizontally arranged first sleeve is fixed to the screw on both sides of the connecting plate. A guide rod is inserted into the first sleeve. One end of the guide rod is fixedly connected to the outer wall of the short template. Two limiting devices are fixed to the outer wall of the positioning plate away from the short template. The two limiting devices are arranged in a one-to-one correspondence with the two guide rods. The other end of the guide rod passes through the positioning plate and is connected to the limiting device.
[0011] Furthermore, the limiting device includes a second sleeve and a positioning pin. The other end of the guide rod passes through the positioning plate and the second sleeve in sequence, extending to the outside of the second sleeve. A first positioning hole is provided on the second sleeve. A plurality of second positioning holes are provided on the guide rod along its length direction. The positioning pin passes through the first positioning hole and one of the second positioning holes.
[0012] Furthermore, the clamping device includes a screw and a fastening nut. The end of the long template is provided with an installation port. The screw is inserted between the installation ports of the two long templates that are arranged opposite each other. The two ends of the screw are respectively screwed with the fastening nut, and the fastening nut is in movable contact with the outer wall of the long template.
[0013] Furthermore, the bottom template is composed of horizontal segments, vertical segments and inclined segments connected in sequence, and the bottom end face of the short template matches the shape of the bottom template.
[0014] Furthermore, the positioning element is fixedly connected to the surface of the long template, and the outer wall of the short template is in movable contact with the positioning element.
[0015] Furthermore, a support plate is provided between the two short templates. One end of the support plate is fixedly connected to the top end face of one of the short templates, and the other end is slidably connected to the top end face of the other short template. A protrusion is fixed on the bottom end face of the support plate along the length direction of the long template, and a groove matching the protrusion is provided on the top end face of the short template.
[0016] The advantages of this utility model are: the adjustable connector allows the mold to be adjusted according to the actual length of the window, making it highly adaptable and easy to use. It also makes it easy to disassemble each template, facilitating construction.
[0017] With the inclined section of the bottom formwork, the cast-in-place precast window sill cap can divert outdoor rainwater to the outside, solving the problem of rainwater leakage into the room. At the same time, with the vertical section, it can assist in positioning during the window frame installation process, which is conducive to the window frame construction effect. In addition, the vertical part is in close contact with the outer wall of the window frame, and the joint is filled with sealant, which can further prevent rainwater from entering the room. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the structure of the utility model;
[0020] Figure 2 This is a top view of the utility model;
[0021] Figure 3 This is a structural schematic diagram of the short template and adjustable connector in this utility model;
[0022] Figure 4 This is a partial side view of the utility model;
[0023] In the diagram: 1. Long template; 2. Bottom template; 3. Short template; 4. Pouring space; 5. Adjustable connector; 5. Clamping device; 5.1. Screw; 5.1.1. Fastening nut; 5.1.2. Connecting plate; 5.2. Positioning plate; 5.3. First sleeve; 5.4. Limiting device; 5.5. Second sleeve; 5.5.1. Positioning pin; 5.5.2. First positioning hole; 5.5.3. Second positioning hole; 5.5.4. Guide rod; 5.6. Positioning component; 6. Mounting port; 7. Horizontal section; 2.1. Vertical section; 2.2. Inclined section; 2.3. Support plate; 7. Protrusion; 8. Groove; 9. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] like Figure 1-4As shown, the adjustable precast concrete capping mold for exterior window sills includes two vertically arranged and parallel long templates 1, a horizontally arranged bottom template 2 between the two long templates 1, and two vertically arranged short templates 3 on the top end face of the bottom template 2. The two side walls of the short templates 3 are respectively in contact with the inner walls of the two long templates 1. The short templates 3 are perpendicular to the long templates 1. The bottom template 2, the two long templates 1 and the two short templates 3 form a pouring space 4. Concrete is poured into the pouring space 4, and the precast window sill capping is formed after molding.
[0026] One of the short templates 3 has its outer side wall connected to the long template 1 via a positioning piece 6, and the other short template 3 is connected to the long template 1 via an adjustable connector 5. The position of the short template 3 connected to the positioning piece 6 remains unchanged, and the position of the other short template 3 is adjusted only by adjusting the position of the adjustable connector 5 so that the distance between the two short templates 3 changes.
[0027] The adjustable connector 5 includes a clamping device 5.1, a connecting plate 5.2, a positioning plate 5.3, a first sleeve 5.4, a limiting device 5.5, a guide rod 5.6, and a screw 5.1.1;
[0028] A clamping device 5.1 is detachably connected between the ends of the two long templates 1. The clamping device 5.1 can clamp the two long templates 1, and the short template 3 is clamped and fixed under the action of the long templates 1.
[0029] The clamping device 5.1 includes a screw 5.1.1 and a fastening nut 5.1.2. The end of the long template 1 is provided with an installation port 7. The screw 5.1.1 is inserted between the installation ports 7 of the two long templates 1 that are arranged opposite each other. The two ends of the screw 5.1.1 are respectively screwed with fastening nuts 5.1.2. The fastening nuts 5.1.2 are in movable contact with the outer wall of the long template 1. During installation, the installation port 7 of the long template 1 is aligned with the screw 5.1.1 and inserted into the screw 5.1.1, and then fixed by the fastening nuts 5.1.2.
[0030] The adjustable connector 5 allows the molds used to be adjusted according to the actual length of the window, making them highly adaptable and easy to use. It also facilitates the disassembly of each template, making construction easier.
[0031] A horizontally arranged connecting plate 5.2 is fixed in the middle of the screw 5.1.1 of the clamping device 5.1. The other end of the connecting plate 5.2 is fixed with a vertically arranged positioning plate 5.3. The inner wall of the positioning plate 5.3 is in movable contact with one side end of the two long templates 1. Under the action of the positioning plate 5.3, the mounting port 7 and the connecting plate 5.2, the rotation of the screw 5.1.1 is restricted, so that the screw 5.1.1 can stably support the guide rod 5.6 to move back and forth.
[0032] A horizontally positioned first sleeve 5.4 is fixed to each of the screws 5.1.1 on both sides of the connecting plate 5.2. A guide rod 5.6 passes through the first sleeve 5.4. One end of the guide rod 5.6 is fixedly connected to the outer wall of the short template 3. Two limiting devices 5.5 are fixed to the outer wall of the positioning plate 5.3 on the side away from the short template 3. The two limiting devices 5.5 are set one-to-one with the two guide rods 5.6. The other end of the guide rod 5.6 passes through the positioning plate 5.3 and is connected to the limiting device 5.5. According to the size of the precast window sill pressure plate required at the construction site, in order to ensure that the spacing between the two short templates 3 meets the construction requirements, the position of the short template 3 connected to the adjustable connector 5 is adjusted, and the guide rod 5.6 is fixed by the limiting device 5.5. After the guide rod 5.6 is fixed, the short template 3 fixed to it is also fixed.
[0033] The limiting device 5.5 includes a second sleeve 5.5.1 and a positioning pin 5.5.2. The other end of the guide rod 5.6 passes through the positioning plate 5.3 and the second sleeve 5.5.1 in sequence, extending to the outside of the second sleeve 5.5.1. A first positioning hole 5.5.3 is provided on the second sleeve 5.5.1. A plurality of second positioning holes 5.5.4 are provided on the guide rod 5.6 along its length direction. A positioning pin 5.5.2 passes between the first positioning hole 5.5.3 and one of the second positioning holes 5.5.4. The guide rod 5.6 and the positioning plate 5.3 are fixed by the positioning pin 5.5.2 and the second positioning hole 5.5.4.
[0034] The bottom formwork 2 consists of a horizontal section 2.1, a vertical section 2.2, and an inclined section 2.3 connected in sequence. The bottom end face of the short formwork 3 matches the shape of the bottom formwork 2. Under the action of the inclined section 2.3 of the bottom formwork 2, the cast-in-place precast window sill capping can divert outdoor rainwater to the outside, solving the problem of rainwater leakage into the room. At the same time, under the action of the vertical section 2.2, it can assist in positioning during the window frame installation process, which facilitates the window frame construction effect. In addition, the vertical part is in close contact with the outer wall of the window frame, and the joint is filled with sealant, which can further prevent rainwater from entering the room.
[0035] The positioning piece 6 is fixedly connected to the surface of the long template 1, and the outer side wall of the short template 3 is in movable contact with the positioning piece 6. The positioning piece 6 is an angle steel.
[0036] A support plate 7 is provided between the two short templates 3. One end of the support plate 7 is fixedly connected to the top end face of one of the short templates 3, and the other end is slidably connected to the top end face of the other short template 3. A protrusion 8 is fixed on the bottom end face of the support plate 7 along the length direction of the long template 1. A groove 9 matching the protrusion 8 is opened on the top end face of the short template 3. The support plate 7 and the protrusion 8 make the cast precast window sill pressure plate form a rainproof groove.
[0037] The specific operation process of this embodiment is as follows:
[0038] During assembly:
[0039] Screws 5.1.1 are installed at the ends of the two long templates 1 respectively, and then the long templates 1 are initially connected to the screws 5.1.1 using fastening nuts 5.1.2;
[0040] Then, the first short template 3 is set between the positioning pieces 6 of the two long templates 1;
[0041] Positioning plate 5.3 is placed on the side of the two long templates 1 away from positioning piece 6, and is movably abutted against the end of the long template 1;
[0042] The guide rod 5.6 of the second short template 3 passes through the first sleeve 5.4, the positioning plate 5.3, and the second sleeve 5.5.1 in sequence, extending to the outside of the second sleeve 5.5.1;
[0043] Based on the required window length, the guide rod 5.6 is moved back and forth to move the short template 3 back and forth. Finally, the positioning pin 5.5.2 is connected to the matching second positioning hole 5.5.4 to position the guide rod 5.6 and indirectly limit the second short template 3.
[0044] Concrete can then be poured within the pouring space 4.
[0045] When demolding:
[0046] After the concrete has set, remove the fastening nut 5.1.2 on the outside of the screw 5.1.1, and then remove the locating pin 5.5.2 from between the first locating hole 5.5.3 and the second locating hole;
[0047] After the positioning plate 5.3 and the end of the long template 1 are moved, the long template 1 is removed from both sides of the screw 5.1.1, and then the first short template 3 is removed.
[0048] Then remove the second short template 3.
[0049] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An adjustable mold for fabricating precast window sill copings, comprising two vertically arranged and parallel long templates, a horizontally arranged bottom template between the two long templates, and two vertically arranged short templates on the top end face of the bottom template. The side walls of the short templates are respectively in contact with the inner walls of the two long templates on both sides, and the short templates are perpendicular to the long templates. The bottom template, the two long templates, and the two short templates form a casting space. The mold is characterized in that: One of the short templates has its outer side wall connected to the long template via a positioning member, and the other short template is connected to the long template via an adjustable connector. The adjustable connector includes a clamping device, a connecting plate, a positioning plate, a first sleeve, a limiting device, and a guide rod; A clamping device is detachably connected between the ends of the two long templates; A horizontally arranged connecting plate is fixed to the middle of the screw of the clamping device, and a vertically arranged positioning plate is fixed to the other end of the connecting plate. The inner wall of the positioning plate is movably abutting against one side end of the two long templates. A horizontally arranged first sleeve is fixed to the screw on both sides of the connecting plate. A guide rod is inserted into the first sleeve. One end of the guide rod is fixedly connected to the outer wall of the short template. Two limiting devices are fixed to the outer wall of the positioning plate away from the short template. The two limiting devices are arranged in a one-to-one correspondence with the two guide rods. The other end of the guide rod passes through the positioning plate and is connected to the limiting device.
2. The adjustable mold for manufacturing precast window sill caps according to claim 1, characterized in that, The limiting device includes a second sleeve and a positioning pin. The other end of the guide rod passes through the positioning plate and the second sleeve in sequence, extending to the outside of the second sleeve. A first positioning hole is provided on the second sleeve. A plurality of second positioning holes are provided on the guide rod along its length direction. The positioning pin passes through the first positioning hole and one of the second positioning holes.
3. The adjustable mold for manufacturing precast window sill caps according to claim 2, characterized in that, The clamping device includes a screw and a fastening nut. The end of the long template has an installation port. The screw passes through the installation ports of the two long templates that are arranged opposite each other. The fastening nut is screwed to both ends of the screw and moves against the outer wall of the long template.
4. The adjustable mold for manufacturing precast window sill caps according to claim 3, characterized in that, The bottom template is composed of horizontal, vertical and inclined sections connected in sequence, and the bottom end face of the short template matches the shape of the bottom template.
5. The adjustable mold for manufacturing precast window sill caps according to claim 4, characterized in that, The positioning component is fixedly connected to the surface of the long template, and the outer wall of the short template is in movable contact with the positioning component.
6. The adjustable mold for manufacturing precast window sill caps according to claim 5, characterized in that, A support plate is provided between the two short templates. One end of the support plate is fixedly connected to the top end face of one of the short templates, and the other end is slidably connected to the top end face of the other short template. A protrusion is fixed on the bottom end face of the support plate along the length direction of the long template, and a groove matching the protrusion is provided on the top end face of the short template.