Forming device special for concrete cover plate production

Abstract

The invention relates to the technical field of building material production, in particular to a forming device special for concrete cover plate production, which comprises a demoulding frame, the upper surface of the demoulding frame is rotatably connected with a rotating frame, the inner sides of the two ends of the rotating frame are provided with sliding chutes, and the upper surface of the demoulding frame is symmetrically and fixedly connected with double-shaft motors; the output shafts on the sides, close to each other, of the double-shaft motors are fixedly connected to the two ends of one side of the rotating frame, when the double-shaft motors drive the rotating frame to turn over, the rotating frame can automatically turn over the cover plate mold, manual intervention can be reduced, the demolding efficiency can be greatly improved, the force for driving the mold to turn over automatically is consistent, and the demolding efficiency is improved. And the external force borne in each demolding process is more uniform, so that the cover plate can be stably separated from the interior of the mold, and the integrity of the appearance of the cover plate can be kept.

Description

Technical Field

[0001] The present invention relates to the technical field of building material production, and specifically to a forming device dedicated to the production of concrete covers. Background Art

[0002] In modern construction projects and municipal infrastructure construction, concrete covers are key components for covering important facilities such as underground pipe network wells and drainage ditches. The production process of concrete covers mainly includes multiple links such as cloth laying, vibration, forming, and demoulding. Among them, the quality of the demoulding link directly determines the appearance quality and structural integrity of the finished product.

[0003] When demoulding the cover, usually workers use a special demoulding rack for demoulding. When using the demoulding rack for demoulding, it is necessary to rely on manpower for flipping. For larger or heavier molds, not only does it increase the time required for each cycle, but also reduces the overall demoulding efficiency. Moreover, it is difficult to accurately control the force during the manual operation process. It is not only necessary to prevent the cover from sticking to the inner side of the mold, but also to prevent damage such as bumps on the outer surface of the cover.

[0004] Therefore, the present invention proposes a forming device dedicated to the production of concrete covers to make up for and improve the deficiencies of the existing technology. Summary of the Invention

[0005] Aiming at the defects existing in the prior art, the present invention provides a forming device dedicated to the production of concrete covers, which can effectively solve the above technical problems.

[0006] The technical implementation plan of the present invention is as follows: It includes a demoulding rack, a rotating rack is rotatably connected to the upper surface of the demoulding rack. Chutes are opened on the inner sides of both ends of the rotating rack. The upper surface of the demoulding rack is symmetrically and fixedly connected with a dual-axis motor. The output shafts on the sides where the dual-axis motor is close to each other are fixedly connected to both ends on one side of the rotating rack. When the rotating rack is driven to flip by the output shaft of the dual-axis motor, the rotating rack can drive the mold to flip easily.

[0007] More preferably, electric slide rails are fixedly connected to the upper surfaces on both sides of the rotating rack. A pushing rack is slidably connected between the lower surfaces of the electric slide rails. Both ends of the pushing rack are slidably connected to the chutes on the inner side of the rotating rack. When the pushing rack is driven to move by the electric slide rails, the mold can be automatically pushed out from the inner side of the rotating rack.

[0008] More preferably, connecting frames are symmetrically and fixedly connected to the lower surfaces on both sides of the demolding frame. First conveyor wheels are fixedly connected to the outer surfaces of the output shafts on the mutually approaching sides of the double-shaft motor. The outer surfaces of the first conveyor wheels are all drivingly connected with conveyor belts. Second conveyor wheel supports are rotatably connected to both sides of the upper surface of the connecting frame. One end of each conveyor belt is drivingly connected to the outer surface of the second conveyor wheel support. Driving gears are fixedly connected to the mutually remote ends of the second conveyor wheel supports. Driven gears are rotatably connected to the upper surfaces of the connecting frames. The outer surface of the driving gear is meshed and cooperated with the outer surface of the driven gear. Squeezing members are fixedly connected to the mutually remote sides of the driven gears. Chutes are formed through one sides of the squeezing members. Guide frames are slidably connected to the upper surfaces of the connecting frames. Support frames are symmetrically and fixedly connected to both sides of the lower surface of the guide frame. Sliding frames are slidably connected to the mutually remote sides of the support frames. Second conveyor wheel supports are rotatably connected to the mutually approaching sides of the sliding frames. Connecting rods are fixedly connected to the mutually remote sides of the sliding frames. The mutually remote sides of the connecting rods are slidably connected in the chutes of the squeezing members. The chute at one end of the squeezing member is in squeezing cooperation with the outer surface of the connecting rod. When the mold is driven to move upward by the second conveyor wheel support, the molds can be stacked.

[0009] More preferably, lifting plates are symmetrically and slidably connected to both ends on one side of the guide frame. By squeezing the mold with the lower surface of the lifting plate, displacement of the mold during upward movement can be avoided.

[0010] More preferably, the upper surface inside the sliding frame is in squeezing cooperation with the lower surface of the second conveyor wheel support. Connecting torsion springs are fixedly sleeved on the mutually approaching sides of the upper surface of the sliding frame. One end of each connecting torsion spring is fixedly connected to the inside of the mutually remote side of the second conveyor wheel support. The connecting torsion spring can drive the second conveyor wheel support to reset and flip.

[0011] More preferably, a plurality of reset springs are fixedly connected to the mutually remote sides of the connecting frame. The mutually remote ends of the reset springs are fixedly connected to the inside of the bottom end of the guide frame. The reset spring can drive the guide frame to move in a reset manner.

[0012] More preferably, rotary lead screws are fixedly connected to the output shafts at the mutually remote ends of the double-shaft motor. Moving frames are threadedly connected to the outer surfaces of the rotary lead screws. The inner sides of the moving frames are slidably connected to the outer surface of one side of the demolding frame. Centering frames are symmetrically rotatably connected to both sides at one end of the demolding frame. Chutes are formed through one ends of the centering frames. The side of the moving frame away from the rotary lead screw is slidably connected in the chute of the centering frame, and the outer surface of the end of the moving frame away from the rotary lead screw is in squeezing cooperation with the chute of the centering frame. When the mold is squeezed by the centering frame, the mold can be kept in a centered position before flipping.

[0013] More preferably, one side of the center frame where the two ends are close to each other is made of a soft material, so as to avoid damaging the mold when the center frame extrudes the outer surface of the mold.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] 1. When the rotating frame is flipped by the dual-axis motor in the present invention, the rotating frame can automatically flip the cover mold, which can not only reduce manual intervention, but also greatly improve the demolding efficiency. Moreover, the force when driving the mold to automatically flip is consistent, making the external force received during each demolding process more uniform, so that the cover can be stably detached from the mold, which helps to maintain the integrity of the cover appearance.

[0016] 2. When the extrusion member extrudes the connecting rod in the present invention, the mold after demolding can be moved upward and stacked, thus reducing the steps of manually handling and stacking the molds, so that the operator does not need to spend a lot of time dealing with the molds after demolding; when the guide frame is moved to both sides, the stacked molds can be quickly taken out from the inside of the guide frame.

[0017] 3. When the movable frame reciprocates to drive the center frame to swing in the present invention, the side where the center frames are close to each other can extrude the cover mold, so that the mold is in the best state before each flip of the rotating frame by the rotating frame, thus eliminating the need for the staff to adjust the position of the mold. Description of the Drawings

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

[0019] Figure 2 It is a structural sectional view of the flipping component of the present invention.

[0020] Figure 3 It is a sectional view of the mechanism of the pushing component and the center component of the present invention.

[0021] Figure 4 It is a schematic diagram of the structure of the jacking component of the present invention.

[0022] Figure 5 It is a schematic diagram of the structure where the extrusion member extrudes the connecting rod of the present invention.

[0023] Figure 6 It is a schematic diagram of the structure where the driving gear drives the driven gear to reverse of the present invention.

[0024] Figure 7 It is a schematic diagram of the structure where the connecting torsion spring drives the support member to reset of the present invention.

[0025] The markings of each component in the attached drawings are as follows: 1 - demoulding frame, 11 - rotating frame, 12 - dual-axis motor, 13 - electric slide rail, 14 - pushing frame, 2 - connecting frame, 21 - first conveyor wheel, 211 - second conveyor wheel, 22 - conveyor belt, 23 - driving gear, 24 - driven gear, 25 - extrusion piece, 26 - guiding frame, 27 - lifting plate, 28 - connecting rod, 29 - return spring, 210 - support frame, 211 - supporting piece, 212 - connecting torsion spring, 213 - sliding frame, 3 - centering frame, 31 - moving frame, 32 - rotating lead screw. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the attached drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] Next, in conjunction with the attached Figures 1-7 A specific implementation example of the present invention will be elaborated in detail.

[0028] Refer to the attached Figure 1 , A forming device dedicated to the production of concrete cover plates, including a demoulding frame 1. The upper surface of the demoulding frame 1 is rotatably connected to a rotating frame 11. Chutes are provided inside both ends of the rotating frame 11. The rotating frame 11 is used to flip the cover plate mold.

[0029] As described in the background art, when demoulding the cover plate, usually workers use a special demoulding frame 1 for demoulding. When using the demoulding frame 1 for demoulding, manual flipping is required. For larger or heavier molds, not only does it increase the time required for each cycle, but also reduces the overall demoulding efficiency.

[0030] Refer to the attached Figures 2-3 , To solve the problem of low manual flipping efficiency, the following technical solution is adopted in this embodiment: Dual-axis motors 12 are fixedly connected to the upper surfaces on both sides of the demoulding frame 1. The output shafts on the sides of the dual-axis motors 12 close to each other are fixedly connected to both ends of the rotating frame 11. The dual-axis motors 12 are used to drive the rotating frame 11 to flip.

[0031] When it is necessary to demold the cover plate, first, the demolding frame 1 can be pushed to the left. As the demolding frame 1 moves to the left, it can drive the rotating frame 11 to move simultaneously. When the rotating frame 11 moves to the left, the sliding grooves on the inner side of the rotating frame 11 can slide into both sides of the cover plate mold. At this time, the output shafts on the side where the double-shaft motor 12 is close to each other can drive the rotating frame 11 to flip clockwise. When the rotating frame 11 flips, it can drive each cover plate mold to flip simultaneously, so that it is convenient to take out the cover plate from the mold.

[0032] On the upper surfaces of both sides of the rotating frame 11, electric slide rails 13 are fixedly connected. Between the bottoms of the electric slide rails 13, a pushing frame 14 is slidably connected. The two ends of the pushing frame 14 are slidably connected in the sliding grooves on the inner side of the rotating frame 11. The electric slide rails 13 are used to drive the pushing frame 14 to slide left and right.

[0033] As the rotating frame 11 flips clockwise, it can drive the pushing frame 14 to flip simultaneously through the electric slide rails 13. At this time, the electric slide rails 13 can prompt the pushing frame 14 to slide to the right. When the pushing frame 14 slides to the right in the sliding groove of the rotating frame 11, it can extrude the outer surface of the mold, prompting the mold to move to the right. At this time, the bottom of the mold will be in a suspended state, and the cover plate can slide downward in the mold by its own gravity, so that automatic demolding can be carried out.

[0034] And because the force of the rotating frame 11 driving the mold to flip is consistent, the external force received by the mold during the flipping process is more uniform. It can not only stably separate the cover plate from the mold, but also help to maintain the integrity of the appearance of the cover plate.

[0035] When the cover plate is completely separated, at this time, the electric slide rails 13 can drive the pushing frame 14 to slide leftward for reset in the sliding groove of the rotating frame 11, and the output shafts on the side where the double-shaft motor 12 is close to each other can drive the rotating frame 11 to swing counterclockwise for reset. When the rotating frame 11 flips counterclockwise, it can also drive the pushing frame 14 to flip for reset through the electric slide rails 13, and thus run reciprocally.

[0036] After the cover plate is separated from the mold, it is still necessary for the staff to manually carry, sort and stack the molds one by one.

[0037] Refer to the appendix Figures 4-7, to solve the problem that the mold needs to be manually collected, the following technical solution is adopted in this embodiment: Connecting frames 2 are fixedly connected to the lower surfaces of both ends on the right side of the demolding frame 1. First transmission wheels 21 are fixedly connected to the outer surfaces of the output shafts on the mutually close sides of the double-shaft motor 12. When the output shafts of the double-shaft motor 12 rotate, they are used to drive the first transmission wheels 21 to rotate. Second transmission wheel supports 211 are rotatably connected to both sides of the connecting frame 2. The outer surfaces of the first transmission wheels 21 are all drivingly connected to conveyor belts 22. The right ends of the conveyor belts 22 are all drivingly connected to the outer surfaces of the second transmission wheel supports 211. When the first transmission wheels 21 rotate, they are used to drive the second transmission wheel supports 211 to rotate simultaneously through the conveyor belts 22. Active gears 23 are fixedly connected to the mutually remote sides of the second transmission wheel supports 211. The second transmission wheel supports 211 are used to drive the active gears 23 to rotate. Driven gears 24 are rotatably connected to the upper surfaces of the connecting frames 2. The outer surfaces of the active gears 23 are meshed and matched with the outer surfaces of the driven gears 24. The active gears 23 are used to drive the driven gears 24 to rotate. Squeezing members 25 are fixedly connected to the mutually remote sides of the driven gears 24. When the driven gears 24 rotate, they can drive the squeezing members 25 to swing. Chutes are penetratingly opened on the front sides of the squeezing members 25.

[0038] Guide frames 26 are symmetrically and slidably connected to the inner sides of the upper surfaces of the connecting frames 2. The guide frames 26 are used to store the molds. Lifting plates 27 are slidably connected to the outer surfaces of the front sides of the guide frames 26. The lifting plates 27 are used to squeeze the upper surfaces of the molds. Support frames 210 are fixedly connected to the bottom ends of the guide frames 26. Slide frames 213 are slidably connected to the outer surfaces of the mutually remote sides of the support frames 210. The support frames 210 are used to guide the slide frames 213. Second transmission wheel supports 211 are rotatably connected to the mutually close sides of the slide frames 213. The slide frames 213 are used to drive the second transmission wheel supports 211 to move up and down. The second transmission wheel supports 211 are used to jack up the molds. Connecting torsion springs 212 are fixedly sleeved on the outer surfaces of the mutually close sides of the slide frames 213. The rear ends of the connecting torsion springs 212 are fixedly connected to the inner sides of the second transmission wheel supports 211. The connecting torsion springs 212 are used to drive the second transmission wheel supports 211 to swing back to their original positions. Connecting rods 28 are fixedly connected to the mutually remote sides of the slide frames 213. The connecting rods 28 are used to drive the slide frames 213 to move up and down. The outer surfaces of the mutually remote sides of the connecting rods 28 are slidably connected to the chutes of the squeezing members 25. The chutes of the squeezing members 25 are in extrusion fit with the outer surfaces of the connecting rods 28. The squeezing members 25 are used to drive the connecting rods 28 to move upward.

[0039] After the rotary rack 11 drives the mold to turn clockwise, the pushing rack 14 can push the mold between the inner sides of the guiding rack 26. When the rotary rack 11 then drives another mold to turn clockwise, the output shafts on the side where the first transmission wheels 21 are close to each other can drive the first transmission wheels 21 to rotate clockwise. When the first transmission wheels 21 rotate clockwise, they can drive the second transmission wheel support 211 to rotate simultaneously through the conveyor belt 22. The second transmission wheel support 211 can drive the driving gear 23 to rotate simultaneously. The outer surface of the driving gear 23 meshes with the outer surface of the driven gear 24. When the driving gear 23 rotates clockwise, it can drive the driven gear 24 to rotate counterclockwise. At this time, the counterclockwise rotating driven gear 24 can drive the extrusion member 25 to swing.

[0040] When the extrusion member 25 swings counterclockwise, the sliding groove of the extrusion member 25 can extrude the outer surface of the connecting rod 28, prompting the connecting rod 28 to drive the sliding rack 213 to move upward. As the sliding rack 213 moves upward on the outer surface of the support frame 210, it can drive the second transmission wheel support 211 to move simultaneously. When the second transmission wheel support 211 moves upward, the upper surfaces between the second transmission wheel supports 211 can contact the bottom of the mold and drive the mold to move upward. When the mold moves upward, it can push the lifting plate 27 upward, enabling the lifting plate 27 to press on the upper surface of the mold to improve the stability of the mold during the upward movement. After the mold moves upward, the pushing rack 14 can drive another corresponding mold to move to the inner side of the guiding rack 26, prompting the mold on the upper surface to be in the same vertical line as the mold on the bottom surface.

[0041] When the output shafts on the side where the dual-axis motors 12 are close to each other drive the rotating frame 11 to swing counterclockwise, the first transmission wheel 21 can rotate simultaneously with the output shafts of the dual-axis motors 12. When the first transmission wheel 21 rotates counterclockwise, it can drive the second transmission wheel support 211 to rotate simultaneously through the conveyor belt 22. When the second transmission wheel support 211 rotates, it can drive the driving gear 23 to rotate simultaneously. When the driving gear 23 rotates counterclockwise, it can drive the driven gear 24 to rotate clockwise. As the driven gear 24 rotates clockwise, it can drive the extrusion member 25 to swing. At this time, the chute of the extrusion member 25 can extrude the outer surface of the connecting rod 28, prompting the connecting rod 28 to drive the sliding frame 213 to move downward. When the sliding frame 213 moves downward on the outer surface of the support frame 210, it can drive the second transmission wheel support 211 to move simultaneously. When the second transmission wheel support 211 moves downward, the lower surface of the second transmission wheel support 211 will be extruded by both sides of the mold, prompting the second transmission wheel support 211 to swing to a vertical state. And when the second transmission wheel support 211 swings, it can rotate the connecting torsion spring 212 to a state of storing energy. When the sliding frame 213 drives the second transmission wheel support 211 to move to the bottommost position, at this time, the lower surface of the second transmission wheel support 211 can be separated from the outer surface of the mold. And the connecting torsion spring 212 in the state of storing energy can drive the second transmission wheel support 211 to reset to the initial state. Thus, by reciprocating in this way, not only can the mold be collected, but also the mold after demoulding can be moved upward and stacked, thereby reducing the steps of manually handling and stacking the molds, and enabling the operator to not need to spend a lot of time dealing with the demoulded molds.

[0042] A plurality of reset springs 29 are fixedly connected to the mutually remote sides of the connecting frame 2. The mutually remote sides of the reset springs 29 are fixedly connected to the bottom end of the guide frame 26. The reset springs 29 are used to drive the guide frame 26 to move in a reset manner. When the molds inside the guide frame 26 are stacked up, at this time, the staff can slide the guide frame 26 to both sides. When the guide frame 26 slides to both sides, it can move the reset springs 29 to a compressed state. And after the guide frame 26 moves, it can be disengaged from the limit of the mold, enabling the stacked molds to be quickly taken out from the inside of the guide frame 26.

[0043] It should be particularly noted that: when the guide frame 26 moves to both sides, it can drive the sliding frame 213 to move simultaneously through the support frame 210. And when the sliding frame 213 moves, it can drive the second transmission wheel support 211 to move simultaneously. As the second transmission wheel support 211 moves to both sides, it can prevent the mold from being blocked by the second transmission wheel support 211 when moving downward.

[0044] When the mold is taken out from the inner side of the guide frame 26, the reset spring 29 in the compressed state can drive the guide frame 26 to move inward for reset, so that the inner side of the guide frame 26 can collect the mold again.

[0045] Before the rotary frame 11 flips the mold, it is necessary to accurately align the two ends of the rotary frame 11 with the mold, which not only takes time but also reduces the efficiency of the cover plate demoulding.

[0046] Reference appendix Figures 2-3 To solve the problem that the rotary frame 11 needs to be accurately aligned with the mold, the following technical solution is adopted in this embodiment: Output shafts at the mutually remote ends of the double-shaft motor 12 are fixedly connected with rotary lead screws 32 respectively. The double-shaft motor 12 is used to drive the rotary lead screws 32 to rotate. The outer surfaces of the rotary lead screws 32 are threadedly connected with moving frames 31 respectively. The inner sides of the moving frames 31 are slidably connected to the outer surfaces on both sides of the demoulding frame 1. The rotary lead screws 32 are used to drive the moving frames 31 to slide back and forth. At both sides of the left end of the demoulding frame 1, centering frames 3 are symmetrically rotatably connected. Through holes are formed through the right ends of the centering frames 3. The outer surfaces of the left ends of the moving frames 31 are slidably connected in the through holes of the centering frames 3. The outer surfaces of the left ends of the moving frames 31 are in extrusion fit with the through holes of the centering frames 3. The moving frames 31 are used to drive the centering frames 3 to swing. Between the inner sides of the centering frames 3, the mold is squeezed.

[0047] Before the rotary frame 11 flips the mold, at this time, the output shaft of the double-shaft motor 12 can drive the rotary lead screw 32 to rotate. When the rotary lead screw 32 rotates, it can drive the moving frames 31 to move away from each other. When the moving frames 31 move on both sides of the demoulding frame 1, the outer surfaces of the left ends of the moving frames 31 can squeeze the through holes of the centering frames 3, so that the left ends of the centering frames 3 can move closer to each other and squeeze the outer surface of the mold, so that the mold can be in the centered position before being flipped by the rotary frame 11, thus avoiding the mismatch between the position of the rotary frame 11 and the mold.

[0048] The mutually close sides of the left ends of the centering frames 3 are made of soft materials, so that the centering frames 3 will not damage the mold when squeezing the outer surface of the mold.

[0049] When the rotary frame 11 flips the mold clockwise, at this time, the output shaft of the double-shaft motor 12 can drive the rotary lead screw 32 to rotate in the reverse direction. When the rotary lead screw 32 rotates in the reverse direction, it can drive the moving frames 31 to move closer to each other. When the moving frames 31 move on the outer surfaces at both ends of the demoulding frame 1, the outer surfaces of the left ends of the moving frames 31 can squeeze the through holes of the centering frames 3, so that the left ends of the centering frames 3 can swing away from each other, thus facilitating the next extrusion of the mold by the centering frames 3.

[0050] Although the present disclosure has been shown and described with reference to specific exemplary embodiments thereof, those skilled in the art should understand that various changes in form and detail may be made therein without departing from the spirit and scope of the present disclosure as defined by the appended claims and their equivalents. Therefore, the scope of the present disclosure should not be limited to the above-described embodiments, but should be determined not only by the appended claims but also by the equivalents of the appended claims.

Claims

1. A forming device specifically for the production of concrete covers, comprising a demolding frame (1), wherein a rotating frame (11) is rotatably connected to the upper surface of the demolding frame (1), and chutes are provided inside both ends of the rotating frame (11), characterized in that, The upper surface of the demolding frame (1) is symmetrically and fixedly connected with a dual-axis motor (12), and the output shafts on the side where the dual-axis motors (12) are close to each other are fixedly connected to both ends of one side of the rotating frame (11).

2. The molding device specifically for the production of concrete cover plates according to claim 1, characterized in that, Electric sliding rails (13) are fixedly connected to the upper surfaces on both sides of the rotating frame (11). A pushing frame (14) is slidably connected between the lower surfaces of the electric sliding rails (13), and both ends of the pushing frame (14) are slidably connected to the inner sliding grooves of the rotating frame (11).

3. The molding device dedicated to the production of concrete covers according to claim 1, characterized in that, Connecting frames (2) are symmetrically and fixedly connected to the lower surfaces on both sides of the demolding frame (1). First transmission wheels (21) are fixedly connected to the outer surfaces of the output shafts on the side where the dual-axis motors (12) are close to each other. The outer surfaces of the first transmission wheels (21) are all drivingly connected with transmission belts (22). Support members (211) for the second transmission wheels are rotatably connected to both sides of the upper surface of the connecting frame (2). One end of each of the transmission belts (22) is drivingly connected to the outer surface of the support member (211) for the second transmission wheel. Driving gears (23) are fixedly connected to the ends of the support members (211) for the second transmission wheels that are far away from each other. Driven gears (24) are rotatably connected to the upper surfaces of the connecting frames (2). The outer surfaces of the driving gears (23) are meshed and matched with the outer surfaces of the driven gears (24). Extrusion members (25) are fixedly connected to the sides of the driven gears (24) that are far away from each other. Chutes are formed through one side of each of the extrusion members (25). Guide frames (26) are slidably connected to the upper surfaces of the connecting frames (2). Support frames (210) are symmetrically and fixedly connected to both sides of the lower surface of the guide frame (26). Sliding frames (213) are slidably connected to the sides of the support frames (210) that are far away from each other. Support members (211) for the second transmission wheels are rotatably connected to the sides of the sliding frames (213) that are close to each other. Connecting rods (28) are fixedly connected to the sides of the sliding frames (213) that are far away from each other. The outer surfaces of the connecting rods (28) are slidably connected to the chutes of the extrusion members (25), and the chutes at one end of the extrusion members (25) are in extrusion fit with the outer surfaces of the connecting rods (28).

4. A forming device dedicated to the production of concrete covers according to claim 3, characterized in that, Lifting plates (27) are symmetrically and slidably connected to both ends of one side of the guide frame (26).

5. The molding device dedicated to the production of concrete covers according to claim 4, characterized in that, The inner upper surface of the sliding frame (213) is in extrusion fit with the lower surface of the support member (211) for the second transmission wheel. Connecting torsion springs (212) are fixedly sleeved on the sides of the upper surface of the sliding frame (213) that are close to each other. One end of each of the connecting torsion springs (212) is fixedly connected to the inside of the side of the support member (211) for the second transmission wheel that is far away from each other.

6. The forming device dedicated to the production of concrete covers according to claim 5, characterized in that, A plurality of reset springs (29) are fixedly connected to the sides of the connecting frames (2) that are far away from each other. The ends of the reset springs (29) that are far away from each other are fixedly connected to the inner sides of the bottoms of the guide frames (26).

7. A molding device specifically for the production of concrete covers, characterized in that, The output shafts at the mutually remote ends of the double-shaft motor (12) are fixedly connected with rotating lead screws (32). The outer surfaces of the rotating lead screws (32) are both threadedly connected with moving frames (31). The inner sides of the moving frames (31) are slidably connected to the outer surface of one side of the demolding frame (1). At both sides of one end of the demolding frame (1), centering frames (3) are symmetrically rotatably connected. Through slots are formed in one ends of the centering frames (3). The sides of the moving frames (31) remote from the rotating lead screws (32) are slidably connected in the through slots of the centering frames (3), and the outer surfaces of the ends of the moving frames (31) remote from the rotating lead screws (32) are in extrusion fit with the through slots of the centering frames (3).

8. A molding device dedicated to the production of concrete covers, characterized in that One side where the two ends of the centering frame (3) are close to each other is made of a soft material.

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