Inner mold supporting system convenient to demold and used for forming prefabricated exhaust passage

Abstract

The utility model discloses an internal mold supporting system for forming a prefabricated exhaust passage convenient to demold, which comprises an internal mold and an internal mold supporting and adjusting component arranged in the internal mold, and the internal mold comprises a front side internal mold, a rear side internal mold, a left side internal mold and a right side internal mold which are connected through a first thin steel plate, the left side inner mold comprises a first left side inner mold and a second left side inner mold which are connected through a second thin steel plate, the right side inner mold comprises a first right side inner mold and a second right side inner mold which are connected through a second thin steel plate, and the inner mold supporting and adjusting assembly comprises a lead screw and a plurality of nut bases installed on the lead screw in a threaded mode; and a pull rod is hinged between the nut seat and the left inner mold and between the nut seat and the right inner mold. The internal mold is reasonable in structural design, the internal mold can contract inwards, the internal mold supporting and adjusting assembly is arranged in the internal mold, expansion and contraction of the internal mold can be achieved by rotating the lead screw in the internal mold supporting and adjusting assembly, and therefore the internal mold can be overall disassembled conveniently.

Description

Technical Field

[0001] The utility model belongs to the technical field of prefabricated molds for building facilities, and particularly relates to an inner mold support system for prefabricated exhaust duct forming that is convenient for demolding. Background Art

[0002] As a smoke exhaust and ventilation duct, the exhaust duct is widely used inside buildings and can effectively discharge kitchen fumes, toilet exhaust gases, etc. At present, there are problems with difficult demolding in prefabricated exhaust duct molds. Moreover, existing molds often first remove the outer mold and then remove the inner mold after the exhaust duct is dry, which has problems such as complex mold removal, low efficiency, and the need for multiple inner molds. In addition, when the inner mold of the existing forming mold is removed, it is easy to collide between the inner mold and the prefabricated exhaust duct, thereby causing damage to the surface of the prefabricated exhaust duct.

[0003] Therefore, it is necessary to propose an inner mold support assembly for prefabricated exhaust duct forming that can remove the inner mold as a whole. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide an inner mold support system for prefabricated exhaust duct forming that is convenient for demolding in view of the above deficiencies in the prior art. Its structure is reasonably designed. The front inner mold, rear inner mold, left inner mold, and right inner mold are connected together by a first thin steel plate to form an inner mold that can contract inward. An inner mold support adjustment assembly is arranged inside the inner mold, and by rotating the lead screw in the inner mold support adjustment assembly, the expansion and contraction of the inner mold can be realized, thereby facilitating the overall removal of the inner mold and effectively improving the installation and disassembly efficiency of the inner mold.

[0005] To solve the above technical problem, the technical solution adopted by the utility model is: an inner mold support system for prefabricated exhaust duct forming that is convenient for demolding, including an inner mold and an inner mold support assembly arranged inside the inner mold. The inner mold includes a front inner mold, a rear inner mold, a left inner mold, and a right inner mold. The front inner mold and the left inner mold, the front inner mold and the right inner mold, the rear inner mold and the left inner mold, and the rear inner mold and the right inner mold are all connected by a first thin steel plate. The left inner mold includes a first left inner mold and a second left inner mold connected by a second thin steel plate. The right inner mold includes a first right inner mold and a second right inner mold connected by a second thin steel plate;

[0006] The inner mold support adjustment assembly includes a lead screw arranged at the center of the inner mold and a plurality of nut seats threadedly installed on the lead screw. A pull rod is hinged between each nut seat and the left inner mold and between each nut seat and the right inner mold;

[0007] The upper end of the lead screw is rotatably installed on a support frame, and the lower end of the lead screw is rotatably installed on a base. The support frame is fixed on the top of the outer mold.

[0008] The above-mentioned internal mold support system for prefabricated exhaust duct forming that facilitates demolding is characterized in that chamfering parts for forming chamfers are provided on both sides of the front-side internal mold, rear-side internal mold, left-side internal mold, and right-side internal mold, and the first thin steel plate is used to connect two adjacent chamfering parts, and the first thin steel plate and the chamfering parts are connected by screws;

[0009] The first thin steel plate is located on the side of the internal mold away from the external mold.

[0010] The above-mentioned internal mold support system for prefabricated exhaust duct forming that facilitates demolding is characterized in that movable gaps are provided between the first left-side internal mold and the second left-side internal mold and between the first right-side internal mold and the second right-side internal mold;

[0011] The second thin steel plate is connected to the first left-side internal mold and the second left-side internal mold by screws respectively, and the second thin steel plate is located on the side of the internal mold away from the external mold.

[0012] The above-mentioned internal mold support system for prefabricated exhaust duct forming that facilitates demolding is characterized in that channel steels for connecting tie rods are provided on both the left-side internal mold and the right-side internal mold, and a plurality of hinges are provided along the length direction on the outer side of the web of the channel steel;

[0013] When the channel steel is connected to the left-side internal mold, the two hinge plates of the hinge are respectively connected to the first left-side internal mold and the second left-side internal mold;

[0014] When the channel steel is connected to the right-side internal mold, the two hinge plates of the hinge are respectively connected to the first right-side internal mold and the second right-side internal mold.

[0015] The above-mentioned internal mold support system for prefabricated exhaust duct forming that facilitates demolding is characterized in that one end of the tie rod is hinged between the two flange plates of the channel steel through a hinge shaft.

[0016] The above-mentioned internal mold support system for prefabricated exhaust duct forming that facilitates demolding is characterized in that a plurality of hinge seats for installing hinges are provided on the outer side of the web of the channel steel, and the hinge shaft of the hinge is rotatably installed between the two hinge ears of the hinge seat.

[0017] The above-mentioned internal mold support system for prefabricated exhaust duct forming that facilitates demolding is characterized in that the nut seat is of H type, and the other end of the tie rod is hinged to one end of the nut seat through a hinge shaft.

[0018] The present utility model has the following advantages compared with the prior art:

[0019] 1. The utility model connects the front inner mold, rear inner mold, left inner mold and right inner mold together through a first thin steel plate to form an inner mold. At the same time, the left inner mold and the right inner mold are each divided into two pieces and connected by a second thin steel plate respectively, so that the inner mold can be folded inward and deformed, thereby facilitating the overall removal of the inner mold.

[0020] 2. By arranging an inner mold support adjustment component inside the inner mold, the utility model can expand and contract the inner mold by rotating the lead screw in the inner mold support adjustment component, effectively improving the installation and disassembly efficiency of the inner mold.

[0021] In summary, the structure of the utility model is reasonably designed. The front inner mold, rear inner mold, left inner mold and right inner mold are connected together through a first thin steel plate to form an inner mold that can contract inward. An inner mold support adjustment component is arranged inside the inner mold, and the inner mold can be expanded and contracted by rotating the lead screw in the inner mold support adjustment component, thereby facilitating the overall removal of the inner mold and effectively improving the installation and disassembly efficiency of the inner mold.

[0022] The technical solution of the utility model will be further described in detail below with reference to the drawings and embodiments. Description of the Drawings

[0023] Figure 1 is a three-dimensional structure diagram of the utility model.

[0024] Figure 2 is a top view of the utility model.

[0025] Figure 3 is a structural diagram of the inner mold support adjustment component of the utility model.

[0026] Description of the Reference Numerals:

[0027] 3 - Inner mold; 3-1 - Front inner mold; 3-2 - Rear inner mold; 3-3 - First left inner mold; 3-4 - Second left inner mold; 3-5 - First right inner mold; 3-6 - Second right inner mold; 3-7 - First thin steel plate; 3-8 - Second thin steel plate; 4 - Chamfered part; 8 - Lead screw; 9 - Nut seat; 10 - Pull rod; 11 - Channel steel; 12 - Hinge; 13 - Hinge seat; 14 - Inclined surface; 18 - Clearance. Detailed Embodiment

[0028] As Figures 1 to 3As shown in the figure, the utility model includes an inner mold 3 and an inner mold support adjustment assembly arranged inside the inner mold 3. The inner mold 3 includes a front-side inner mold 3-1, a rear-side inner mold 3-2, a left-side inner mold, and a right-side inner mold. Between the front-side inner mold 3-1 and the left-side inner mold, between the front-side inner mold 3-1 and the right-side inner mold, between the rear-side inner mold 3-2 and the left-side inner mold, and between the rear-side inner mold 3-2 and the right-side inner mold, they are all connected by a first thin steel plate 3-7. The left-side inner mold includes a first left-side inner mold 3-3 and a second left-side inner mold 3-4 connected by a second thin steel plate 3-8. The right-side inner mold includes a first right-side inner mold 3-5 and a second right-side inner mold 3-6 connected by a second thin steel plate 3-8;

[0029] The inner mold support adjustment assembly includes a lead screw 8 arranged at the center of the inner mold 3 and a plurality of nut seats 9 threadedly installed on the lead screw 8. A pull rod 10 is hinged between the nut seat 9 and the left-side inner mold and between the nut seat 9 and the right-side inner mold;

[0030] The upper end of the lead screw 8 is rotatably installed on a support frame, and the lower end of the lead screw 8 is rotatably installed on a base. The support frame is fixed to the top of the outer mold.

[0031] During actual use, the front-side inner mold 3-1, the rear-side inner mold 3-2, the left-side inner mold, and the right-side inner mold are connected together by the first thin steel plate 3-7 to form the inner mold 3. At the same time, the left-side inner mold and the right-side inner mold are each divided into two pieces and connected by the second thin steel plate 3-8 respectively, so that the inner mold 3 can be folded inward and deformed, thereby facilitating the overall removal of the inner mold 3.

[0032] During specific implementation, by arranging the inner mold support adjustment assembly inside the inner mold 3, the expansion and contraction of the inner mold 3 can be realized by rotating the lead screw 8 in the inner mold support adjustment assembly, which can effectively improve the installation and disassembly efficiency of the inner mold 3.

[0033] It should be noted that the exhaust port forming die 7 is a hollow shell structure. The exhaust port forming die 7 is in close contact with the inner wall of one side of the outer mold 2 and the outer wall of the inner mold 3. The exhaust port forming die 7 is convenient for forming an exhaust port after the exhaust passage is formed, and is used to discharge flue gas.

[0034] During specific implementation, the thickness of the first thin steel plate 3-7 and the second thin steel plate 3-8 is 2 mm to 4 mm, which can be bent, facilitating the folding and contraction of the inner mold 3.

[0035] During specific implementation, when forming a prefabricated exhaust passage, a base needs to be set, and an outer mold is set on the base, so that the inner mold 3 is located inside the outer mold. A end mold is arranged between the bottom of the outer mold and the bottom of the inner mold 3. The cavity surrounded by the outer mold, the inner mold 3 and the end mold is a forming cavity.

[0036] In actual use, the support frame is a portal frame, and the bottoms of the two columns of the support frame are respectively fixed to the tops of the outer mold panels on the front and rear sides of the outer mold by bolts.

[0037] In actual use, bolt connection plates are provided at the bottoms of the two columns of the support frame.

[0038] In specific implementation, the setting of the embedded part 17 facilitates the lifting of the precast exhaust duct component.

[0039] In this embodiment, chamfering parts 4 for forming chamfers are provided on both sides of the front inner mold 3-1, the rear inner mold 3-2, the left inner mold, and the right inner mold. The first thin steel plate 3-7 is used to connect two adjacent chamfering parts 4, and the first thin steel plate 3-7 and the chamfering part 4 are connected by screws;

[0040] The first thin steel plate 3-7 is located on the side of the inner mold 3 away from the outer mold.

[0041] In actual use, by providing chamfering parts 4 for forming chamfers on both sides of the left inner mold and the right inner mold, it is convenient for the contraction and demolding of the inner mold 3. The setting of the chamfering part 4 will not cause damage to the precast exhaust duct.

[0042] It should be noted that two adjacent chamfering parts 4 are spliced together to form the chamfer of the inner mold.

[0043] In this embodiment, movable gaps 18 are provided between the first left inner mold 3-3 and the second left inner mold 3-4, and between the first right inner mold 3-5 and the second right inner mold 3-6;

[0044] The second thin steel plate 3-8 is connected to the first left inner mold 3-3 and the second left inner mold 3-4 by screws, and the second thin steel plate 3-8 is located on the side of the inner mold 3 away from the outer mold.

[0045] In actual use, inclined surfaces 14 are symmetrically provided on the sides of the first left inner mold 3-3 and the second left inner mold 3-4 that are close to each other, so that the width of the movable gap 18 gradually decreases from the side close to the outer mold 2 to the side away from the outer mold 2.

[0046] In specific implementation, the setting of the movable gap 18 facilitates the contraction of the inner mold 3.

[0047] In this embodiment, channel steels 11 for connecting the tie rods 10 are provided on both the left inner mold and the right inner mold, and a plurality of hinges 12 are provided along the length direction on the outer side of the web of the channel steel 11;

[0048] When the channel steel 11 is connected to the left inner mold, the two hinge plates of the hinge 12 are respectively connected to the first left inner mold 3-3 and the second left inner mold 3-4, and limiting blocks are arranged between the hinge plate and the first left inner mold 3-3 and between the hinge plate and the second left inner mold 3-4;

[0049] When the channel steel 11 is connected to the right inner mold, the two hinge plates of the hinge 12 are respectively connected to the first right inner mold 3-5 and the second right inner mold 3-6, and limiting blocks are arranged between the hinge plate and the first right inner mold 3-5 and between the hinge plate and the second right inner mold 3-6.

[0050] During specific implementation, the arrangement of the limiting blocks enables a certain gap to be maintained between the hinge 12 and the inner side of the inner mold 3, thereby facilitating the opening and closing of the hinge 12.

[0051] In this embodiment, one end of the pull rod 10 is hinged between the two flange plates of the channel steel 11 through a hinge shaft.

[0052] In this embodiment, a plurality of hinge seats 13 for installing the hinge 12 are arranged on the outer side of the web of the channel steel 11, and the hinge shaft of the hinge 12 is rotatably installed between the two hinge ears of the hinge seat 13.

[0053] In this embodiment, the nut seat 9 is of H shape, and the other end of the pull rod 10 is hinged to one end of the nut seat 9 through a hinge shaft.

[0054] When the present utility model is actually used, after the exhaust duct is prefabricated and the concrete begins to set, rotate the lead screw 8 to make the inner mold 3 contract and fold inward, and remove the inner mold 3 to prevent the inner mold 3 from being unable to be removed after the concrete of the component solidifies; after the exhaust duct is completely solidified, then remove two adjacent outer mold panels.

[0055] The above is only a preferred embodiment of the present utility model, and does not impose any limitation on the present utility model. Any simple modification, change, and equivalent structural change made to the above embodiments according to the technical essence of the present utility model still fall within the protection scope of the technical solution of the present utility model.

Claims

1. An inner mold support system for prefabricated exhaust duct molding that is easy to demould, characterized in that: The invention comprises an inner mold (3) and an inner mold support adjustment component arranged in the inner mold (3), wherein the inner mold (3) comprises a front inner mold (3-1), a rear inner mold (3-2), a left inner mold and a right inner mold, wherein the front inner mold (3-1) and the left inner mold, the front inner mold (3-1) and the right inner mold, the rear inner mold (3-2) and the left inner mold, and the rear inner mold (3-2) and the right inner mold are all connected via a first thin steel plate (3-7), the left inner mold comprises a first left inner mold (3-3) and a second left inner mold (3-4) connected via a second thin steel plate (3-8), and the right inner mold comprises a first right inner mold (3-5) and a second right inner mold (3-6) connected via a second thin steel plate (3-8); The inner mold support adjustment assembly comprises a screw rod (8) arranged at the center of the inner mold (3) and a plurality of nut seats (9) threadedly mounted on the screw rod (8), and a pull rod (10) is hingedly connected between the nut seat (9) and the left inner mold and between the nut seat (9) and the right inner mold; The upper end of the screw rod (8) is rotatably mounted on a support frame, the lower end of the screw rod (8) is rotatably mounted on a base, and the support frame is fixed on the top of the outer mold.

2. The inner mold support system for forming a prefabricated exhaust duct that is easy to demould according to claim 1, characterized in that: Both sides of the front inner mold (3-1), the rear inner mold (3-2), the left inner mold and the right inner mold are provided with chamfered portions (4) for forming chamfers, the first thin steel plate (3-7) is used to connect two adjacent chamfered portions (4), and the first thin steel plate (3-7) and the chamfered portions (4) are connected by screws; The first thin steel plate (3-7) is located on a side of the inner mold (3) away from the outer mold.

3. The inner mold support system for forming a prefabricated exhaust duct that is easy to demould according to claim 1, characterized in that: A movable gap (18) is provided between the first left inner mold (3-3) and the second left inner mold (3-4), and between the first right inner mold (3-5) and the second right inner mold (3-6); The second thin steel plate (3-8) and the first left inner mold (3-3) are connected by screws, as are the second thin steel plate (3-8) and the second left inner mold (3-4). The second thin steel plate (3-8) is located on a side of the inner mold (3) away from the outer mold.

4. The inner mold support system for forming a prefabricated exhaust duct that is easy to demould according to claim 1, characterized in that: The left inner mold and the right inner mold are both provided with a channel steel (11) for connecting the pull rod (10), and the outer side of the web of the channel steel (11) is provided with a plurality of hinges (12) along its length direction; When the channel steel (11) is connected to the left inner mold, the two hinge plates of the hinge (12) are respectively connected to the first left inner mold (3-3) and the second left inner mold (3-4); When the channel steel (11) is connected to the right inner mold, the two hinge plates of the hinge (12) are respectively connected to the first right inner mold (3-5) and the second right inner mold (3-6).

5. The inner mold support system for forming a prefabricated exhaust duct that is easy to demould according to claim 4, characterized in that: One end of the pull rod (10) is hinged between two flange plates of the channel steel (11) via a hinge shaft.

6. The inner mold support system for forming a prefabricated exhaust duct that is easy to demould according to claim 4, characterized in that: A plurality of hinge seats (13) for installing hinges (12) are arranged on the outer side of the web of the channel steel (11), and the hinge shaft of the hinge (12) is rotatably installed between two hinge ears of the hinge seat (13).

7. The inner mold support system for forming a prefabricated exhaust duct that is easy to demould according to claim 1, characterized in that: The nut seat (9) is H-shaped, and the other end of the pull rod (10) is hinged to one end of the nut seat (9) via a hinge shaft.

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