Formwork and method of operation for facilitating stripping of mass concrete

Abstract

This invention discloses a template and its usage method for facilitating the demolding of large-volume concrete. By installing screws at the four corners of the template, the template is raised and lowered for demolding. The screws at the four corners are connected to a transmission mechanism, which in turn rotates the screws simultaneously, maintaining template balance during demolding and significantly reducing the equipment and manpower required. Furthermore, a buffer mechanism is installed at the bottom of the carrier plate. During pressing and shaping, the buffer mechanism moves downwards under pressure. After shaping is complete, the pressure is released, and the internal spring of the buffer mechanism pushes the carrier plate upwards, thereby moving the shaped concrete slab and facilitating subsequent demolding.

Description

Technical Field

[0001] This invention relates to the field of bulk concrete, and more specifically, to a formwork that facilitates demolding of large-volume concrete. Background Technology

[0002] Mass concrete refers to large-volume concrete structures with a minimum geometric dimension of not less than 1m, or concrete that is expected to develop harmful cracks due to temperature changes and shrinkage caused by the hydration of cementitious materials. When solidifying mass concrete, corresponding formwork is required.

[0003] Existing large concrete formwork is large in size, so in order to maintain balance during demolding, it is necessary to exert force from multiple directions to lift it, which consumes a lot of resources. At the same time, during the demolding process, the solidified concrete tends to stick to the inner wall of the formwork, increasing the difficulty of demolding. Summary of the Invention

[0004] To overcome the aforementioned deficiencies of the prior art, embodiments of the present invention provide a template for easy demolding of large-volume concrete. By installing screws at the four corners of the template, the template is raised and lowered for demolding. The screws at the four corners are connected to a transmission mechanism, which, together with the screws, drives the four corner screws to rotate simultaneously. This maintains the template's balance during demolding and significantly reduces the equipment and manpower required. Furthermore, a buffer mechanism is provided at the bottom of the carrier plate. During the pressing and shaping process, the buffer mechanism moves downwards under pressure. After shaping is complete, the pressure is released, and the internal spring of the buffer mechanism pushes the carrier plate upwards, thereby moving the shaped concrete slab. This movement between the concrete slab and the template facilitates subsequent demolding.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a template for easy demolding of large-volume concrete, comprising a template and a base disposed at the bottom of the template, wherein a lifting mechanism for raising and lowering the template is installed on the base, a transmission mechanism is disposed at the bottom of the base, a top cover is disposed at the top of the template, the top cover is movably connected to the template through a connecting mechanism, a carrier plate for supporting concrete is disposed inside the template, and a buffer mechanism is disposed at the four corners of the bottom of the carrier plate;

[0006] The lifting mechanism includes screws installed at the four corners inside the template, and the screws are rotatably connected to the base through a transmission mechanism. The screws are threadedly connected to the template.

[0007] Furthermore, the transmission mechanism includes a second motor fixedly mounted on the base, a second gear fixedly mounted on the bottom end of the output shaft of the second motor, a first gear provided on one side of the second gear, and the second gear meshing with the first gear.

[0008] Furthermore, the base has a bottom groove at its bottom end, and transmission wheels are movably installed at the four corners of the bottom groove. The transmission wheels at the four corners are connected by transmission belts. The second gear is fixedly installed on the outer surface of the bottom end of the transmission wheel at one corner, and the bottom end of the screw is fixedly connected to the transmission wheel at the corresponding position.

[0009] Furthermore, the connecting mechanism includes connecting plates on both sides of one end of the top cover, a fixing frame is fixedly installed on one outer surface of the template, and the connecting plates are located at both ends of the fixing frame. A rotating shaft is fixedly installed at one end of the connecting plate, and the connecting plate is rotatably connected to the fixing frame through the rotating shaft. A first motor is fixedly installed at both ends inside the fixing frame, and one end of the output shaft of the first motor is fixedly connected to one end of the rotating shaft.

[0010] Furthermore, a mounting groove is provided at the bottom of the upper cover, and a pressure plate is placed inside the mounting groove. The inner diameter of the pressure plate is the same as that of the template. A cylinder is fixedly installed on the outer surface of the top of the upper cover, and the output shaft of the cylinder is fixedly connected to the outer surface of the pressure plate.

[0011] Furthermore, the buffer mechanism includes a support rod and an inner rod disposed at the bottom end of the support rod. The support rod has a hollow structure, and the inner rod is slidably connected to the support rod. A buffer spring is disposed inside the support rod at the top end of the inner rod.

[0012] Furthermore, positioning grooves are provided at the four corners of the bottom end of the carrier plate, and positioning blocks are fixedly installed at the top of the support rod, and the positioning blocks match the positioning grooves. The buffer mechanism is connected to the carrier plate by inserting the positioning blocks into the positioning grooves.

[0013] Furthermore, an installation block is fixedly installed at the bottom end of the inner rod, and an installation groove is opened on the top outer surface of the base at a position corresponding to the installation block, and the installation block is threadedly connected to the installation groove.

[0014] Furthermore, the inner diameter of the carrier plate and the template are the same.

[0015] The technical effects and advantages of this invention are as follows:

[0016] 1. This invention installs screws at the four corners of the template, using the screws to lift and lower the template for demolding. The screws at the four corners are connected to a transmission mechanism, which drives the screws at the four corners to rotate simultaneously. This maintains the balance of the template during demolding and greatly reduces the equipment and manpower required.

[0017] 2. This invention incorporates a buffer mechanism at the bottom of the carrier plate. When concrete is poured in, the mechanism oscillates up and down, achieving an adaptive compaction effect. Simultaneously, during the pressing and shaping process, the buffer mechanism moves downwards under pressure. Once shaping is complete, the pressure is released, and the internal spring of the buffer mechanism pushes the carrier plate upwards. This, in turn, moves the shaped concrete slab, facilitating movement between the concrete slab and the formwork for easy demolding. During demolding, a second motor moves simultaneously, gradually increasing the relative speed between the two before settling at a constant value, preventing concrete adhesion to the formwork sidewalls. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 .

[0019] Figure 2 This is a schematic diagram of the overall structure of the top cover of the present invention in the open state.

[0020] Figure 3 This is a schematic diagram of the demolded state of the present invention.

[0021] Figure 4 This is a schematic diagram of the overall structure of the present invention. Figure 2 .

[0022] Figure 5 This is a schematic diagram of the transmission mechanism of the present invention.

[0023] Figure 6 This is a cross-sectional view of the upper cover connecting mechanism of the present invention.

[0024] Figure 7 This is a schematic diagram of the mounting structure of the carrier plate of the present invention.

[0025] Figure 8 This is an exploded view of the buffer mechanism of the present invention;

[0026] Figure 9 This is a schematic diagram of the base of the present invention with a vertical rod.

[0027] The attached diagram is labeled as follows: 1. Template; 11. Top cover; 12. Connecting plate; 13. Fixing frame; 14. Cylinder; 15. Pressure plate; 16. Rotating shaft; 17. First motor; 2. Base; 21. Second motor; 22. Screw; 23. Transmission wheel; 24. Transmission belt; 25. First gear; 26. Second gear; 3. Carrier plate; 31. Support rod; 32. Positioning block; 33. Inner rod; 34. Mounting block; 35. Buffer spring; 36. Vertical rod. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] according to Figure 1-5 The template shown is for easy demolding of large volume concrete, including template 1 and base 2 set at the bottom of template 1. The base 2 is equipped with a lifting mechanism for raising and lowering template 1. The bottom of the base 2 is provided with a transmission mechanism. The top of template 1 is provided with a top cover 11. The top cover 11 is movably connected to template 1 through a connecting mechanism. The interior of template 1 is provided with a carrier plate 3 for bearing concrete. The bottom four corners of the carrier plate 3 are provided with buffer mechanisms.

[0030] The lifting mechanism includes screws 22 installed at the four corners inside the template 1, and the screws 22 are rotatably connected to the base 2 through a transmission mechanism. The screws 22 are threadedly connected to the template 1.

[0031] Furthermore, the transmission mechanism includes a second motor 21 fixedly mounted on the base 2. A second gear 26 is fixedly mounted on the bottom end of the output shaft of the second motor 21. A first gear 25 is provided on one side of the second gear 26, and the second gear 26 meshes with the first gear 25. A bottom groove is provided at the bottom end of the base 2. Transmission wheels 23 are movably mounted at the four corners of the bottom groove. The transmission wheels 23 at the four corners are connected by transmission belts 24. The second gear 26 is fixedly mounted on the outer surface of the bottom end of the transmission wheel 23 at one corner. The bottom end of the screw 22 is fixedly connected to the corresponding transmission wheel 23. When the second motor 21 on the base 2 is started, the second motor 21 drives the bottom second gear 26 to rotate. The second gear 26 drives the first gear 25, and the first gear 25 drives the upper transmission wheel 23 to rotate. During the rotation of the transmission wheel 23, it will drive the other transmission wheels 23 at the corners to rotate through the transmission belt 24, thereby driving the screw 22 in the four corners of the upper template 1 to rotate.

[0032] The specific implementation method is as follows: When the concrete slab is solidified and demolding is performed, the second motor 21 on the base 2 is started. The second motor 21 drives the second gear 26 at the bottom to rotate. The second gear 26 drives the first gear 25, and the first gear 25 drives the upper transmission wheel 23 to rotate. During the rotation of the transmission wheel 23, it will drive the transmission wheels 23 at other corners to rotate through the transmission belt 24, thereby driving the screws 22 in the four corners of the upper template 1 to rotate. The screws 22 are threadedly connected to the template 1, which will push the template 1 upward, increasing the balance of the template 1 when moving upward, until the template 1 is separated from the solidified concrete slab. Then, a forklift tool is used to remove the carrier plate 3 and the concrete slab together from the base 2. After the carrier plate is removed, a new carrier plate 3 is placed, and then the second motor 21 drives the template to reset and continue to be used. This cycle is repeated.

[0033] according to Figure 6-8 The template shown is a formwork for easy demolding of large-volume concrete. The connecting mechanism includes connecting plates 12 on both sides of one end of a top cover 11. A fixing frame 13 is fixedly installed on one outer surface of the template 1, and the connecting plates 12 are located at both ends of the fixing frame 13. A rotating shaft 16 is fixedly installed at one end of the connecting plate 12. The connecting plate 12 is rotatably connected to the fixing frame 13 through the rotating shaft 16. A first motor 17 is fixedly installed at both ends inside the fixing frame 13, and one end of the output shaft of the first motor 17 is fixedly connected to one end of the rotating shaft 16. When the first motor 17 is started, the rotating shaft 16 is rotated by the first motor 21, thereby opening the top cover 11 through the connecting plate 12.

[0034] Furthermore, the bottom end of the upper cover 11 is provided with a placement groove, and a pressure plate 15 is placed inside the placement groove. The pressure plate 15 has the same inner diameter as the template 1. A cylinder 14 is fixedly installed on the outer surface of the top end of the upper cover 11, and the output shaft of the cylinder 14 is fixedly connected to the outer surface of the pressure plate 15. When the cylinder 14 of the upper cover 11 is activated, the pressure plate 15 in the placement groove is pushed out by the cylinder 14, and the pressure plate 15 presses down on the concrete in the template 1.

[0035] Furthermore, the buffer mechanism includes a support rod 31 and an inner rod 33 disposed at the bottom of the support rod 31. The support rod 31 has a hollow structure, and the inner rod 33 is slidably connected to the support rod 31. A buffer spring 35 is disposed inside the support rod 31 at the top of the inner rod 33. During the pressing process, the carrier plate 3 moves downward, causing the inner rod 33 to compress the buffer spring 35 inside the support rod 31. After solidification, the pressure plate 15 is retracted into the mounting groove of the upper cover 11 by the cylinder 14. At the same time, the buffer spring 35 pushes the support rod 31 upward, causing the carrier plate 3 to move upward. During the movement of the carrier plate 3, the solidified concrete slab will move.

[0036] Furthermore, positioning grooves are provided at the four corners of the bottom end of the carrier plate 3, and positioning blocks 32 are fixedly installed at the top end of the support rod 31. The positioning blocks 32 match the positioning grooves. The buffer mechanism is connected to the carrier plate 3 by inserting the positioning blocks 32 into the positioning grooves. When placing a new carrier plate 3, the positioning groove at the bottom end of the carrier plate 3 needs to be aligned with the positioning block 32 at the top end of the support rod 31 so that the positioning block 32 is inserted into the positioning groove.

[0037] Furthermore, an installation block 34 is fixedly installed at the bottom end of the inner rod 33, and an installation groove is opened at the position corresponding to the installation block 34 on the top outer surface of the base 2. The installation block 34 is threadedly connected to the installation groove. When the buffer mechanism needs to be replaced, the installation block 34 at the bottom end can be rotated. The installation block 34 is connected to the base 2 through the thread, so that the installation block 34 drives the buffer mechanism to disengage for replacement.

[0038] like Figure 9 As shown, the inner diameter of the carrier plate 3 is the same as that of the template 1, and a vertical rod 36 is provided on the base 2, which is suitable for the vertical movement of the template 1.

[0039] The specific implementation method is as follows: Before use, start the first motor 21, which drives the rotating shaft 16 to rotate, thereby opening the upper cover 11 through the connecting plate 12. Then, pour concrete into the template 1 and spread it evenly. Next, start the first motor 17 to reset the upper cover 11, which closes the upper end of the template 1. Then, start the cylinder 14 of the upper cover 11 to push out the pressure plate 15 in the mounting slot. The pressure plate 15 presses down on the concrete in the template 1. During the downward pressing process, the carrier plate 3 moves downward, causing the inner rod 33 to squeeze the buffer spring 35 inside the support rod 31. When the solidification is complete... Then, the cylinder 14 retracts the pressure plate 15 into the mounting slot of the upper cover 11. At the same time, the buffer spring 35 pushes the support rod 31 upward, causing the carrier plate 3 to move. During the movement of the carrier plate 3, it will move the solidified concrete slab, causing the perimeter of the concrete slab to separate from the inner wall of the template 1, making demolding easier. When placing a new carrier plate 3, the positioning slot at the bottom of the carrier plate 3 needs to be aligned with the positioning block 32 at the top of the support rod 31, so that the positioning block 32 is inserted into the positioning slot. When the buffer mechanism needs to be replaced, the mounting block 34 at the bottom can be rotated. The mounting block 34 is connected to the base 2 by threads, so that the mounting block 34 can drive the buffer mechanism to disengage for replacement.

[0040] Working principle of this invention:

[0041] Refer to the instruction manual appendix Figure 1-5When the concrete slab is solidified and demolding is carried out, the second motor 21 on the base 2 is started. The second motor 21 drives the second gear 26 at the bottom to rotate. The second gear 26 drives the first gear 25, and the first gear 25 drives the transmission wheel 23 above to rotate. During the rotation of the transmission wheel 23, it will drive the transmission wheels 23 at other corners to rotate through the transmission belt 24, thereby driving the screws 22 in the four corners of the upper template 1 to rotate. The screws 22 are threadedly connected to the template 1 and will push the template 1 upward, increasing the balance of the template 1 when moving upward, until the template 1 is separated from the solidified concrete slab. Then, a forklift tool is used to remove the carrier plate 3 and the concrete slab together from the base 2.

[0042] Refer to the instruction manual appendix Figure 6-8 Before use, the first motor 21 is started, which drives the rotating shaft 16 to rotate, thereby opening the upper cover 11 through the connecting plate 12. Then, concrete is poured into the template 1 and spread evenly. Next, the first motor 17 is started to reset the upper cover 11, which closes the upper end of the template 1. Then, the cylinder 14 of the upper cover 11 is started, which pushes out the pressure plate 15 in the placement groove. The pressure plate 15 presses down on the concrete in the template 1. During the downward pressing, the carrier plate 3 moves downward, which drives the inner rod 33 to squeeze the buffer spring 35 inside the support rod 31. After solidification, the cylinder 14 retracts the pressure plate 15 into the placement groove of the upper cover 11. At the same time, the buffer spring 35 pushes the support rod 31 upward, which drives the carrier plate 3 to move. During the movement of the carrier plate 3, the solidified concrete slab moves, causing the concrete slab to separate from the inner wall of the template 1.

[0043] A method for operating a formwork that facilitates demolding of large-volume concrete, the operation steps are as follows:

[0044] Preparation:

[0045] Start the first motor 21, which drives the rotating shaft 16 to rotate, and the upper cover 11 is opened through the connecting plate 12.

[0046] Pouring:

[0047] Concrete is poured into the formwork 1. The poured concrete is compacted by the buffer mechanism and then spread evenly. The first motor 17 is started to drive the upper cover 11 to reset. The upper cover 11 closes the upper end of the formwork 1. The cylinder 14 of the upper cover 11 is started, and the pressure plate 15 in the placement groove is pushed out by the cylinder 14. The pressure plate 15 presses down on the concrete in the formwork 1. During the downward pressing process, the carrier plate 3 moves down, which drives the inner rod 33 to squeeze the buffer spring 35 inside the support rod 31.

[0048] Demolding:

[0049] After solidification, the pressure plate 15 is retracted into the mounting slot of the upper cover 11 by the cylinder 14. The buffer spring 35 will push the support rod 31 upward, causing the carrier plate 3 to move. During the movement of the carrier plate 3, the solidified concrete slab will move, causing the four sides of the concrete slab to separate from the inner wall of the template 1.

[0050] Simultaneously, the second motor 21 on the base 2 is started, which drives the second gear 26 at the bottom to rotate. The second gear 26 drives the first gear 25, which in turn drives the transmission wheel 23 above to rotate. During the rotation of the transmission wheel 23, it drives the transmission wheels 23 at other corners to rotate through the transmission belt 24, which in turn drives the screws 22 at the four corners of the upper template 1 to rotate. The screws 22 are threadedly connected to the template 1, pushing the template 1 upward and increasing the balance of the template 1 when it moves upward, until the template 1 separates from the solidified concrete slab. During the upward movement, the relative speed between the carrier plate 3 and the template 1 first increases from small to large and then becomes constant.

[0051] Then, use a forklift to remove the carrier plate 3 and the concrete slab from the base 2 together, and reinstall the new carrier plate 3. When placing the new carrier plate 3, align the positioning groove at the bottom of the carrier plate 3 with the positioning block 32 at the top of the support rod 31, and insert the positioning block 32 into the positioning groove.

[0052] Restart the second motor 21 on the base 2. The second motor 21 drives the second gear 26 at the bottom to rotate. The second gear 26 drives the first gear 25. The first gear 25 drives the upper transmission wheel 23 to rotate. During the rotation of the transmission wheel 23, it will drive the transmission wheels 23 at other corners to rotate through the transmission belt 24. This will drive the screws 22 at the four corners of the upper template 1 to rotate. The screws 22 are threadedly connected to the template 1, moving the template 1 down until the template 1 is tightly attached to the base 2.

[0053] 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 formwork for easy demolding of large-volume concrete, comprising a formwork (1) and a base (2) disposed at the bottom end of the formwork (1), characterized in that: The base (2) is equipped with a lifting mechanism for raising and lowering the template (1). The bottom end of the base (2) is provided with a transmission mechanism. The top end of the template (1) is provided with a top cover (11). The top cover (11) is movably connected to the template (1) through a connecting mechanism. The interior of the template (1) is provided with a carrier plate (3) for bearing concrete. The bottom four corners of the carrier plate (3) are provided with a buffer mechanism. The lifting mechanism includes screws (22) installed at the four corners inside the template (1), and the screws (22) are rotatably connected to the base (2) through a transmission mechanism. The screws (22) are threadedly connected to the template (1). The buffer mechanism includes a support rod (31) and an inner rod (33) disposed at the bottom end of the support rod (31). The support rod (31) is a hollow structure, and the inner rod (33) is slidably connected to the support rod (31). A buffer spring (35) is disposed inside the support rod (31) at the top of the inner rod (33). The transmission mechanism includes a second motor (21) fixedly mounted on the base (2), a second gear (26) fixedly mounted on the bottom end of the output shaft of the second motor (21), a first gear (25) is provided on one side of the second gear (26), and the second gear (26) meshes with the first gear (25); The base (2) has a bottom groove at the bottom end, and a transmission wheel (23) is movably installed at the four corners of the bottom groove. The transmission wheels (23) at the four corners are connected by a transmission belt (24). The second gear (26) is fixedly installed on the outer surface of the bottom end of the transmission wheel (23) at one corner. The bottom end of the screw (22) is fixedly connected to the corresponding transmission wheel (23). The connecting mechanism includes connecting plates (12) on both sides of one end of the top cover (11) and a fixing frame (13) fixedly installed on one side of the outer surface of the template (1). The connecting plates (12) are arranged at both ends of the fixing frame (13). A rotating shaft (16) is fixedly installed at one end of the connecting plate (12). The connecting plate (12) is rotatably connected to the fixing frame (13) through the rotating shaft (16). A first motor (17) is fixedly installed at both ends inside the fixing frame (13), and one end of the output shaft of the first motor (17) is fixedly connected to one end of the rotating shaft (16). The bottom end of the upper cover (11) is provided with a placement groove, and a pressure plate (15) is placed inside the placement groove. The inner diameter of the pressure plate (15) is the same as that of the template (1). A cylinder (14) is fixedly installed on the outer surface of the top end of the upper cover (11), and the output shaft of the cylinder (14) is fixedly connected to the outer surface of the pressure plate (15). The carrier plate (3) has positioning grooves at the four corners of its bottom end. The top of the support rod (31) is fixedly installed with a positioning block (32), and the positioning block (32) matches the positioning groove. The buffer mechanism is connected to the carrier plate (3) by inserting the positioning block (32) into the positioning groove.

2. The formwork for easy demolding of large-volume concrete according to claim 1, characterized in that: An installation block (34) is fixedly installed at the bottom end of the inner rod (33). An installation groove is provided on the top outer surface of the base (2) at the position corresponding to the installation block (34). The installation block (34) is threadedly connected to the installation groove.

3. The formwork for easy demolding of large-volume concrete according to claim 1, characterized in that: The inner diameter of the carrier plate (3) is the same as that of the template (1).

4. A method for operating a formwork as described in claim 2 that facilitates demolding of large-volume concrete, characterized in that: The operation steps are as follows: Preparation: Start the first motor (17), which drives the rotating shaft (16) to rotate, and drives the upper cover (11) to open through the connecting plate (12); Pouring: Concrete is poured into the template (1). The poured concrete is compacted by the buffer mechanism through up and down reciprocating motion. Then the concrete is spread evenly. The first motor (17) is started to drive the upper cover (11) to reset. The upper end of the template (1) is closed by the upper cover (11). The cylinder (14) of the upper cover (11) is started. The pressure plate (15) in the placement slot is pushed out by the cylinder (14). The pressure plate (15) presses down on the concrete in the template (1). During the downward pressing process, the carrier plate (3) will move downward, driving the inner rod (33) to squeeze the buffer spring (35) inside the support rod (31). Demolding: After the solidification is completed, the pressure plate (15) is retracted into the placement slot of the upper cover (11) by the cylinder (14). The buffer spring (35) will push the support rod (31) upward, causing the carrier plate (3) to move. During the movement of the carrier plate (3), it will cause the solidified concrete slab to move, so that the four sides of the concrete slab are separated from the inner wall of the template (1). At the same time, the second motor (21) on the base (2) is started. The second motor (21) drives the second gear (26) at the bottom to rotate. The second gear (26) drives the first gear (25). The first gear (25) drives the transmission wheel (23) above to rotate. During the rotation of the transmission wheel (23), the transmission wheel (23) will drive the transmission wheel (23) at other corners to rotate through the transmission belt (24). This will drive the screw (22) in the four corners of the template (1) above to rotate. The screw (22) is threadedly connected to the template (1) to push the template (1) upward, increasing the balance of the template (1) when it moves upward, until the template (1) separates from the solidified concrete slab. During the upward movement, the relative speed of the carrier plate (3) and the template (1) first increases from small to large and then becomes constant. Then, use a forklift to remove the carrier plate (3) and the concrete slab from the base (2) together, and reinstall the new carrier plate (3); when placing the new carrier plate (3), align the positioning groove at the bottom of the carrier plate (3) with the positioning block (32) at the top of the support rod (31), and insert the positioning block (32) into the positioning groove; Start the second motor (21) on the base (2) again. The second motor (21) drives the second gear (26) at the bottom to rotate. The second gear (26) drives the first gear (25). The first gear (25) drives the upper transmission wheel (23) to rotate. During the rotation of the transmission wheel (23), it will drive the transmission wheels (23) at other corners to rotate through the transmission belt (24). This will drive the screws (22) in the four corners of the upper template (1) to rotate. The screws (22) are threadedly connected to the template (1), and the template (1) is moved down until the template (1) is tightly attached to the base (2).

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