Extrusion device for the production of concrete blocks

Abstract

The application discloses a fair-faced concrete formwork joint adjusting device and a construction method thereof, which comprises two oppositely arranged auxiliary formwork strips, the auxiliary formwork strips are provided with two guide holes, a supporting box, two same-directionally arranged guide rods are connected to two ends of the supporting box respectively, the guide rods are slidably arranged in the guide holes corresponding to the positions of the two auxiliary formwork strips, a rotating part is rotatably installed on the supporting box through a rotating shaft, opposite ends of the rotating part are respectively hingedly connected with hinged arms, and one end of each hinged arm away from the rotating part is hingedly connected with an auxiliary formwork strip; a driving structure comprises a gear, a rack meshed with the gear and a poking part, the gear is coaxially installed on the rotating shaft and arranged in the supporting box, the rack is slidably arranged between the gear and the wall of the supporting box, the wall of the supporting box is provided with a sliding hole, the sliding hole is arranged in the same direction with the rack, the poking part is adjustably installed in the sliding hole, and the poking part is connected with the rack. The application solves the problem that the existing adjusting structure of the fair-faced concrete formwork easily leads to the inclination and misplacement of the formwork.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to a fair-faced concrete formwork joint adjustment device and its construction method. Background Technology

[0002] In the construction industry, fair-faced concrete formwork construction technology is widely used in various construction projects because it can achieve a smooth and even concrete surface without the need for additional plastering. The splicing quality of fair-faced concrete formwork directly affects the appearance quality and structural performance of concrete components, and the precise calibration of the joint positions is a key step in ensuring the quality of formwork splicing. Currently, the precise control of formwork gaps directly affects the flatness of the concrete surface, the straightness of the joints, and the overall aesthetics.

[0003] Existing technologies mostly use single-sided support or simple screw adjustment structures. The adjustment process relies on manual experience and judgment, making it difficult to achieve synchronous and symmetrical movement of the templates on both sides. This single-sided force mode easily leads to template tilting and misalignment, and the straightness error of the joint usually exceeds 2mm, which cannot meet the millimeter-level precision requirements of fair-faced concrete projects. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, a joint adjustment device for fair-faced concrete formwork and its construction method are provided to solve the problem that the existing adjustment structure for fair-faced concrete formwork is prone to causing the formwork to tilt or misalign.

[0005] To achieve the above objectives, a joint adjustment device for fair-faced concrete formwork is provided, comprising:

[0006] Two auxiliary template strips are used to install two adjacent fair-faced concrete formworks. The two auxiliary template strips are arranged opposite to each other and the auxiliary template strips have two guide holes.

[0007] A support box, with guide rods connected to both ends of the support box. The two guide rods are arranged in the same direction and slide in the guide holes corresponding to the positions of the two attached template strips. The guide rods are arranged along the width direction of the joint of the two fair-faced concrete templates.

[0008] A rotating component is rotatably mounted on the support box via a rotating shaft. Hinged arms are respectively hinged to opposite ends of the rotating component, and the end of the hinged arm away from the rotating component is hinged to the attached template strip.

[0009] The drive structure includes a gear, a rack meshing with the gear, and an actuating element. The gear is coaxially mounted on the rotating shaft and disposed within the support housing. The rack slides between the gear and the housing wall of the support housing. The housing wall of the support housing has a sliding hole arranged in the same direction as the rack. The actuating element is adjustablely mounted in the sliding hole and connected to the rack.

[0010] Furthermore, the middle part of the rotating component is connected to the other end of the rotating shaft.

[0011] Furthermore, the support box is provided with scale lines, which are arranged along the length direction of the sliding hole.

[0012] Furthermore, a lead screw is rotatably mounted on the support box, and a drive seat is screwed onto the lead screw along the length direction of the sliding hole. The drive seat is connected to the actuating member.

[0013] Furthermore, an ear plate is formed on the outside of the support box, the lead screw is rotatably mounted on the ear plate, the ear plate is connected to a slide rod, the slide rod is arranged in the same direction as the lead screw, and two stop rods are adjustablely mounted on the slide rod, the two stop rods are arranged on opposite sides of the actuating member.

[0014] Furthermore, one end of the stop bar has a through hole, the slide bar slides in the through hole, the stop bar has a threaded locking hole, the threaded locking hole communicates with the through hole, a locking rod is screwed into the threaded locking hole, and the locking rod presses against the slide bar to lock the slide bar.

[0015] Furthermore, there are multiple rotating shafts, which are arranged along the length direction of the seam.

[0016] This invention provides a construction method for a fair-faced concrete formwork joint adjustment device, comprising the following steps:

[0017] Two additional template strips are installed on two adjacent fair-faced concrete templates respectively, so that the guide rod is set along the width direction of the joint between the two fair-faced concrete templates;

[0018] Adjust the position of the actuating component in the sliding hole of the support box of the drive structure. During this process, the actuating component drives the rack of the drive structure to move. The rack drives the gear to rotate so that the rotating component rotates. During the rotation of the rotating component, the hinged arms at opposite ends of the rotating component pull in opposite directions or push the two fair-faced concrete formworks in opposite directions so that the width of the joint between the two fair-faced concrete formworks meets the design requirements.

[0019] The beneficial effect of the present invention is that the fair-faced concrete formwork joint adjustment device of the present invention is installed on two adjacent fair-faced concrete formworks by two attached formwork strips, and then the hinged arms at both ends are driven by rotation, so that the two attached formwork strips move along the length direction of the guide rod, ensuring that the two fair-faced concrete formworks move completely synchronously, equidistantly, and symmetrically, effectively avoiding problems such as formwork skewing and misalignment caused by unilateral adjustment, and ensuring the straightness of the joint. Attached Figure Description

[0020] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0021] Figure 1 This is a schematic diagram of the structure of the fair-faced concrete formwork joint adjustment device according to an embodiment of the present invention.

[0022] Figure 2 This is a schematic diagram of the template strip in an embodiment of the present invention.

[0023] Figure 3 This is a schematic diagram of the internal structure of the support box according to an embodiment of the present invention.

[0024] Figure 4 This is a schematic diagram of the external structure of the support box according to an embodiment of the present invention.

[0025] Figure 5 This is a schematic diagram of the rotating component according to an embodiment of the present invention.

[0026] Figure 6 This is a schematic diagram of the structure of the stop bar according to an embodiment of the present invention.

[0027] Figure label:

[0028] Template 1 is attached;

[0029] Support box 2, scale line 20, guide rod 21;

[0030] Rotating component 3, hinge arm 31, rotating shaft 32;

[0031] 41. Gear; 42. Rack; 43. Actuator; 44. Lead screw; 45. Drive seat; 46. Ear plate; 47. Slide rod; 48. Stop rod; 49. Locking rod;

[0032] 5mm for fair-faced concrete formwork, 50mm for joints. Detailed Implementation

[0033] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0034] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] Reference Figures 1 to 6 As shown, the present invention provides a fair-faced concrete formwork joint adjustment device, comprising: a formwork strip 1, a support box 2, a rotating component 3, and a driving structure.

[0036] In this embodiment, the template strip 1 is used to install on two adjacent fair-faced concrete formworks 5. The length of the template strip 1 is adapted to the length of the fair-faced concrete formwork or to the length of the joint between two adjacent fair-faced concrete formworks. The two template strips 1 are arranged opposite to each other and parallel to each other. Each template strip is positioned along the length direction of the fair-faced concrete formwork and along the length direction of the joint. Preferably, the template strip is detachably installed on the fair-faced concrete formwork by means of multiple bolts.

[0037] The template strip 1 has two guide holes. The guide holes are set along the width direction of the joint.

[0038] The support box 2 is elongated. It is positioned along the length of the joint. The support box is located on the outside of one side of the joint. Guide rods 21 are connected to both ends of the support box 2. The guide rods are fixed to the support box. The two guide rods 21 are aligned in the same direction. The guide rods 21 slide in guide holes corresponding to the positions of the two attached formwork strips 1. The guide rods 21 are positioned along the width of the joint 50 between the two fair-faced concrete formwork strips 5.

[0039] The rotating component 3 is rotatably mounted on the support box 2 via a rotating shaft 32. Hinged arms 31 are respectively hinged to opposite ends of the rotating component 3. The end of the hinged arm 31 furthest from the rotating component 3 is hinged to the attached template strip 1.

[0040] In this embodiment, the rotating component is disposed on the side of the support box facing the joint (the back side of the support box). The rotating component is pivotally connected to the back side of the support box via a pivot shaft.

[0041] The drive structure includes a gear 41, a rack 42, and a toggle element 43.

[0042] The rotating shaft is rotatably mounted on the support box. The rotating shaft is positioned along the thickness direction of the support box. In this embodiment, the rotating shaft is positioned along the depth direction of the joint. One end of the rotating shaft protrudes from the outside of the back of the support box, and the other end extends into the support box. A gear 41 is coaxially mounted on the rotating shaft 32. The gear 41 is disposed within the support box 2. A limiting space is formed between the gear and one side wall of the support box. A rack 42 slides between the gear 41 and the wall of the support box 2, i.e., the rack is disposed within the limiting space. A sliding hole is provided in the wall of the support box 2. The sliding hole is strip-shaped and positioned along the length direction of the joint. The sliding hole is aligned with the rack 42. The rack 42 meshes with the gear 41. An actuating element 43 is adjustablely mounted in the sliding hole. The actuating element 43 is connected to the rack 42.

[0043] During the adjustment of the position of the actuating component in the sliding hole, the rack drives the gear to rotate. When the gear rotates, the shaft rotates, which in turn causes the rotating component to rotate. Finally, the hinged arms at both ends of the rotating component pull the two fair-faced concrete formwork closer to each other or further apart to adjust the width of the joint between the two fair-faced concrete formwork.

[0044] See Figure 5 As shown, the middle part of the rotating component 3 is connected to the other end of the rotating shaft 32. When the rotating component rotates, one end of the two hinged arms moves around the circumference of the gear. Figure 5 The rotating component shown is set along the length of the joint, at which point the distance between the two attached template strips is the smallest; when the rotating component is rotated to be set along the width of the joint, the distance between the two attached template strips is the largest.

[0045] See Figure 4 As shown, the support box 2 is provided with scale lines 20. The scale lines 20 are set along the length direction of the sliding hole. By means of the scale lines set on the front of the support box, the distance between the two auxiliary template strips can be indicated when adjusting the position of the actuating element.

[0046] Continue to combine Figure 3 and Figure 4 As shown, a lead screw 44 is rotatably mounted on the support box 2. A drive seat 45 is screwed onto the lead screw 44 along the length of the sliding hole. The drive seat 45 is connected to the actuating member 43.

[0047] In this embodiment, an ear plate 46 is formed on the outside of the support box 2. A lead screw 44 is rotatably mounted on the ear plate 46. A slide rod 47 is connected to the ear plate 46. The slide rod 47 is arranged in the same direction as the lead screw 44. Two stop rods 48 are adjustablely mounted on the slide rod 47. The two stop rods 48 are arranged on opposite sides of the actuating member 43.

[0048] Specifically, one end of the stop lever 48 has a through hole. The slide rod 47 slides in the through hole. The stop lever 48 has a threaded locking hole. The threaded locking hole connects to the through hole. A locking rod 49 is screwed into the threaded locking hole. The locking rod 49 presses against the slide rod 47 to lock the slide rod 47.

[0049] During construction, the position of the two baffles is pre-adjusted to limit the range of adjustable movement of the lever in the sliding hole, thereby precisely adjusting the width of the joint.

[0050] Combination Figure 2 and Figure 3 As shown, there are multiple rotating shafts 32. These shafts 32 are arranged along the length of the joint 50. Each shaft has a rack connected to two hinged arms. The two hinged arms are respectively connected to two attached formwork strips, enabling the adjacent fair-faced concrete formwork to move synchronously and symmetrically when adjusting the joint width.

[0051] The present invention provides a fair-faced concrete formwork joint adjustment device for precisely controlling the width of the joint between two adjacent formwork panels.

[0052] In this invention, a pair of auxiliary template strips of the fair-faced concrete formwork joint adjustment device are respectively installed on one side of two adjacent fair-faced concrete formworks, and the auxiliary template strips are fixed to one side of the fair-faced concrete formworks by bolts. A support is installed on one side of each pair of auxiliary template strips. Guide rods are installed on both sides of the support box, and the guide rods pass through the guide holes of the supports, thereby restricting the movement trajectory of the two auxiliary template strips and allowing them to move horizontally.

[0053] The support box contains a rack, multiple rotating shafts, and multiple gears. Rotating components are fixedly mounted at the ends of the rotating shafts. Hinged arms are rotatably connected to both ends of the rotating components. Each pair of hinged arms is rotatably connected to a pair of template strips. Multiple gears mesh with the rack. A slider is mounted on the rack, and a sliding groove is provided inside the support box. The rack is slidably connected to the slider through the sliding groove.

[0054] The front of the support box is also equipped with a drive assembly for driving the rack to move vertically. A lug plate is formed on the front of the support box. A lead screw is rotatably connected to the lug plate. A drive seat that fits the lead screw is fitted around it. An actuating element is fixedly connected to one side of the drive seat. A sliding hole communicating with the drive seat is provided on one side of the support box. The actuating element passes through the sliding hole and is fixedly connected to the rack.

[0055] The drive seat moves vertically by rotating the screw, which in turn drives the rack to move vertically. Through the meshing of the rack and multiple gears, the shaft and the rotating parts at the end rotate synchronously. A pair of hinged arms control the two attached template strips to move in opposite directions or away from each other, thereby adjusting the gap between the fair-faced concrete templates.

[0056] In addition, by setting up multiple sets of hinged arms, the forces on the left and right templates are symmetrical.

[0057] The support box is also engraved with scale lines on the front, and a pointer is installed on one side of the actuating part.

[0058] A sliding rod is also fixedly installed on the ear plate. A pair of stop rods are fitted on the outer wall of the sliding rod. Each of the pair of stop rods is fixedly connected to a stop rod on one side, and a locking rod is threaded onto the outer wall of the stop rod.

[0059] By controlling the stop bar to slide up and down on the outer wall of the slide bar, and controlling the position of the stop bar by the locking rod, when the screw drives the drive seat and the actuating part to move, the actuating part abuts against the stop bar, thus achieving the ideal gap size between adjacent fair-faced concrete formwork.

[0060] This invention provides a construction method for a fair-faced concrete formwork joint adjustment device, comprising the following steps:

[0061] S1. Install the two attached template strips 1 onto the two adjacent fair-faced concrete templates 5 respectively, so that the guide rod 21 is set along the width direction of the joint 50 of the two fair-faced concrete templates 5.

[0062] Before installing the two attached formwork strips onto the fair-faced concrete formwork, adjust the position of the actuating piece in the sliding hole according to the width of the joint between the two attached formwork strips, so that the distance between the two attached formwork strips is greater than the width of the joint.

[0063] After the initial adjustment of the two additional formwork strips, the two additional formwork strips were installed on the two fair-faced concrete formworks respectively.

[0064] S2. Adjust the position of the actuating element 43 in the sliding hole of the support box 2 of the drive structure. During this process, the actuating element 43 drives the rack 42 of the drive structure to move. The rack 42 drives the gear 41 to rotate so that the rotating element 3 rotates. During the rotation of the rotating element 3, the hinged arms 31 at the opposite ends of the rotating element 3 pull in opposite directions or push the two fair-faced concrete formworks 5 in opposite directions so that the width of the joint 50 of the two fair-faced concrete formworks 5 meets the design requirements.

[0065] During construction, a pair of attached formwork strips are securely bolted to the sides of two adjacent fair-faced concrete formwork panels. Based on the ideal gap size between adjacent fair-faced concrete formwork panels as required by the construction specifications, the stop bar in the drive assembly is operated first. The locking bar on the outer wall of the stop bar is loosened, allowing the stop bar to slide up and down on the outer wall of the sliding rod. By sliding the stop bar, its position on the sliding rod is adjusted, thereby moving the stop bar fixedly connected to one side, adjusting it to the position corresponding to the ideal gap size. After adjustment, tighten the locking rod to fix the position of the stop bar and the stop bar, complete the gap preset, rotate the lead screw, and the lead screw is rotatably connected to the bottom of the ear plate. The outer casing is fitted with a matching drive seat. Due to the rotation of the lead screw, the drive seat will move vertically along the lead screw. The actuating component fixedly connected to one side of the drive seat will move with the vertical movement of the drive seat. A sliding hole is opened on one side of the support box. The actuating component passes through the sliding hole and is fixedly connected to the rack, thereby driving the rack to move vertically inside the support box. A slider is installed on the rack, and a sliding groove is opened inside the support box. The rack slides in the sliding groove through the slider, ensuring the stability and guidance of the rack's vertical movement. When the rack moves vertically, since multiple gears are meshed with the rack, the vertical movement of the rack is converted into the rotation of the gears. Multiple rotating shafts are rotatably installed inside the support box, and gears are fixedly installed at the ends of the rotating shafts. Therefore, the rotation of the gears will drive the rotating shafts to rotate. The rotating component fixedly installed at the end of the rotating shaft rotates together with the rotating shaft. The two ends of the rotating component are rotatably connected to hinged arms. Each pair of hinged arms is rotatably connected to a pair of attached template strips. When the rotating component rotates, through the transmission action of the hinged arms, it pushes or pulls the attached template strips to move towards or away from each other in the horizontal direction, thereby causing the two pieces of fair-faced concrete templates to move closer or further apart, adjusting the gap between them.

[0066] During the adjustment process, the operator observes the position of the pointer relative to the scale line on the side of the support box to obtain a direct reading of the gap size between adjacent templates. When the actuating part moves up or down to contact (abut) the preset stop bar, the screw is stopped, indicating that the previously set ideal gap size has been reached. This provides an intuitive mechanical limit and confirmation signal.

[0067] The fair-faced concrete formwork joint adjustment device of the present invention uses multiple sets of symmetrically arranged hinged arms to act simultaneously on the left and right attached formwork strips, ensuring that the formwork on both sides moves completely synchronously, equidistantly, and symmetrically, effectively avoiding problems such as formwork skewing and misalignment caused by unilateral adjustment, and ensuring the straightness of the joint.

[0068] The scale lines and pointers of the fair-faced concrete formwork joint adjustment device of the present invention provide direct, real-time digital readings of the gap dimensions, facilitating precise control by operators.

[0069] The fair-faced concrete formwork joint adjustment device of the present invention has a stop bar that limits the movement to a preset target position. When the actuating element contacts the preset stop bar, it indicates that the previously set ideal gap size has been reached. This provides an intuitive mechanical limit and confirmation signal.

[0070] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A joint adjustment device for fair-faced concrete formwork, characterized in that, include: Two auxiliary template strips are used to install two adjacent fair-faced concrete formworks. The two auxiliary template strips are arranged opposite to each other and the auxiliary template strips have two guide holes. A support box, with guide rods connected to both ends of the support box. The two guide rods are arranged in the same direction and slide in the guide holes corresponding to the positions of the two attached template strips. The guide rods are arranged along the width direction of the joint of the two fair-faced concrete templates. A rotating component is rotatably mounted on the support box via a rotating shaft. Hinged arms are respectively hinged to opposite ends of the rotating component, and the end of the hinged arm away from the rotating component is hinged to the attached template strip. A drive structure includes a gear, a rack meshing with the gear, and a prying element. The gear is coaxially mounted on the rotating shaft and disposed within the support housing. The rack slides between the gear and the housing wall of the support housing. The housing wall of the support housing has a sliding hole, which is arranged in the same direction as the rack. The prying element is adjustablely mounted in the sliding hole and is connected to the rack. A lead screw is rotatably mounted on the support box. The lead screw is arranged along the length direction of the sliding hole. A drive seat is screwed onto the lead screw, and the drive seat is connected to the actuating member. The support box has an ear plate on its exterior. The lead screw is rotatably mounted on the ear plate. The ear plate is connected to a slide rod. The slide rod is arranged in the same direction as the lead screw. Two stop rods are adjustablely mounted on the slide rod. The two stop rods are arranged on opposite sides of the actuating member. One end of the stop bar has a through hole, the slide bar slides in the through hole, the stop bar has a threaded locking hole, the threaded locking hole is connected to the through hole, a locking rod is screwed into the threaded locking hole, and the locking rod presses against the slide bar to lock the slide bar.

2. The fair-faced concrete formwork joint adjustment device according to claim 1, characterized in that, The middle part of the rotating component is connected to one end of the rotating shaft.

3. The fair-faced concrete formwork joint adjustment device according to claim 1, characterized in that, The support box is provided with scale lines, which are set along the length direction of the sliding hole.

4. The fair-faced concrete formwork joint adjustment device according to claim 1, characterized in that, The number of the rotating shafts is multiple, and the multiple rotating shafts are arranged along the length direction of the seam.

5. A construction method for a fair-faced concrete formwork joint adjustment device as described in any one of claims 1 to 4, characterized in that, Includes the following steps: Two additional template strips are installed on two adjacent fair-faced concrete templates respectively, so that the guide rod is set along the width direction of the joint between the two fair-faced concrete templates; Adjust the position of the actuating component in the sliding hole of the support box of the drive structure. During this process, the actuating component drives the rack of the drive structure to move. The rack drives the gear to rotate so that the rotating component rotates. During the rotation of the rotating component, the hinged arms at opposite ends of the rotating component pull in opposite directions or push the two fair-faced concrete formworks in opposite directions so that the width of the joint between the two fair-faced concrete formworks meets the design requirements.

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