Precast part demoulding device

Abstract

The present invention relates to the technical field of demoulding of prefabricated parts, and discloses a demoulding device for prefabricated parts. The device comprises a rectangular frame consisting of a first long side, a second long side, a first short side and a second short side, a card-arranged space is built in the frame, a push-pull member is rotatably arranged outside the frame, a rotating part outside the front part of the first long side and the second long side is provided with a front wheel, and a rear wheel is arranged below the second short side. Two push-pull rods are rotatably connected at the rotation center of the front wheel, and a limiting unit is arranged above the second short side to constrain the rotation range of the push-pull rod. A brake part is arranged at the front end of the push-pull rod, and the brake part forms an angle greater than 90° with the push-pull rod, and the distance from the far end of the brake part to the rotation center exceeds the radius of the front wheel. When flipping, the design of the brake part ensures that the front wheel is off the ground, thereby improving the controllability of demoulding; and avoiding mold wear, extending the service life of the mold, reducing production costs, and improving the stability and efficiency of the demoulding process.

Description

Technical Field

[0001] The invention relates to the technical field of prefabricated part demoulding, and in particular to a prefabricated part demoulding device. Background Art

[0002] Demoulding is one of the key steps in the production process of precast concrete components. It is directly related to the integrity of the components and the feasibility of subsequent processing. High-quality demoulding can not only protect the components from damage, but also ensure the continuity and automation level of the production line, which has a profound impact on the efficiency and cost control of the entire production process. Traditionally, precast component demoulding mostly adopts the method of flipping around one side of the mold. Although this method meets the basic needs of demoulding to a certain extent, it has significant defects in space utilization efficiency and production line layout optimization. During the flipping process, the precast components will rotate along the edge of the mold, resulting in the displacement of the position of the flipped components, which not only increases the lateral space requirements of the production line, but also poses a challenge to logistics path planning and automated process design.

[0003] At present, the demoulding of prefabricated components mostly adopts the method of flipping around one side of the mold. For example, the Chinese patent with application number: 202121873770.9 discloses a mobile prefabricated panel demoulding tool, which drives the rectangular frame to move backward through the front wheels rotatably arranged on both sides of the rectangular frame, and clamps the mold through the built-in clamping space of the rectangular frame. After the clamping is completed, the push-pull rod is rotated upward, and the push-pull rod drives the rectangular frame and the mold to rotate around the central axis of the roller through the inverted U-shaped hook. After turning to a certain angle, the rectangular frame automatically falls and flips under its own weight and the gravity of the prefabricated panel and the mold until the upper side of the rectangular frame faces downward. Under the impact force of the fall, the prefabricated panel is separated from the mold, completing the demoulding of the prefabricated component. Although This method meets the basic needs of demoulding to a certain extent, but in actual use, we found that when the median vertical line of the front wheel is located in front of the front edge of the mold, the mold and the demolding workpiece will move forward during the flipping process, causing flipping difficulties. When the median vertical line of the front wheel is located at the front edge or behind the front edge of the mold, the front edge of the mold will rub against the ground during the flipping process, causing excessive wear of the front edge of the mold. When the wear reaches a certain extent, the mold and the demolding workpiece will also move forward during the flipping process, causing flipping difficulties, poor controllability, and even leakage due to wear, affecting the molding effect of precast concrete components. Summary of the invention

[0004] The present invention aims to provide a preform demoulding device to avoid mold wear and improve the controllability of demoulding.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a prefabricated part demoulding device comprises a rectangular frame and two push-pull rods, the rectangular frame consists of a first long side, a second long side, a first short side and a second short side, a first support portion is fixedly arranged on the inner side of the first long side and the second long side, a second support portion is fixedly arranged on the inner side of the first short side, an upper surface of the second support portion and an upper surface of the first support portion are on the same plane, a rotating unit is arranged on the rectangular frame, the rotating unit comprises a front wheel and a rear wheel, a rotating portion is arranged on the outer side of the front part of the first long side and the second long side, the front wheel is rotatably arranged on the rotating portion, and the rear wheel is rotatably arranged below the second short side, both push-pull rods are rotatably arranged on the rotation center of the front wheel and are respectively located between the front wheel and the first long side or the second long side, a limiting unit for limiting the rotation range of the push-pull rod is arranged above the second short side, a brake portion is arranged at the front end of the push-pull rod, an angle between the brake portion and the push-pull rod is greater than 90°, and a distance from the far end of the brake portion to the rotation center is greater than the radius of the front wheel.

[0006] The beneficial effects of this solution are: 1. Through the setting of the brake part, when the push-pull rod rotates upward, the brake part contacts the ground and lifts the front wheel, so that the front wheel is out of contact with the ground, avoiding the problem of the demolding equipment moving forward when the mold is flipped, and improving the controllability of the demolding process; 2. The initial rotation fulcrum is the front end of the brake part, and the mold itself does not contact the ground, which reduces the wear on the front edge of the mold, increases the service life of the mold, and thus reduces production costs; 3. In practice, in order to avoid the overall forward rolling of the equipment when flipping, the operator removes the front wheel on the rectangular frame and uses the heightened legs to lift the rectangular frame so that the upper surface of the first support part and the second support part is slightly lower than the edge of the preform mold, ensuring that the clamping space can function normally, but as use progresses, the replacement legs bend, and further This causes wear on the lower edge of the prefabricated mold. The inventor converts the rotation of the support legs in the process into rotation of the brake part. The push-pull rod and the front wheel share a common rotation axis. On the one hand, the front wheel is lifted by the brake part to prevent the entire device from moving forward during the flipping process. During the flipping process, the operator applies force forward to suspend the rear wheel in the air. When the device is flipped, it is also necessary to provide a reverse force to prevent the entire device from moving forward. On the other hand, this solution transfers the brake part to the push-pull rod. When the operator applies force to suspend the rear wheel of the device, the front wheel rolls forward when the device flips as a whole. Subsequently, the brake part contacts the ground and cleverly uses the force of the device rolling forward to eliminate the force received by the brake part. Through the cooperation of the front wheel and the brake part, the force of the device rolling forward is converted into the rotational force of the rectangular frame to reduce the force on the brake part and reduce the strength requirement of the brake part.

[0007] Furthermore, a stopper is provided at the front of the push-pull rod, and the stopper is fixedly arranged at a side away from the brake part.

[0008] Beneficial effect: By setting the stopper, the rotation of the front wheel during the flipping process is further limited, the movement of the equipment is reduced, and the maneuverability of the equipment is improved. Especially when there is a slope in the production site, when the equipment and the mold are all borne by the front wheels, the equipment and the mold as a whole may roll unexpectedly under the influence of the slope, which increases the difficulty of the flipping operation and further reduces the maneuverability of the equipment.

[0009] Furthermore, the extension of the stopper is in a spiral shape, one end of the spiral close to the brake portion is tangent to the extension of the front wheel, and the other end of the spiral is away from the front wheel.

[0010] Beneficial effects: 1. The spiral stop design makes the transition from the brake part to the front wheel and then to the stop part smooth during the flipping process, reducing the hard collision between the equipment and the ground and achieving a gentler contact and separation process; 2. Through smooth switching, the equipment is prevented from vigorous vibration in advance, which can ensure that the mold and prefabricated components are separated at the right time, avoid deformation or damage of the product, and improve the yield and quality.

[0011] Furthermore, the limiting unit comprises an upper stopper, a lower stopper and a connecting portion, the upper stopper and the lower stopper are arranged above the second short side, and the connecting portion is fixedly arranged between the two push-pull rods.

[0012] Beneficial effects: The setting of the upper block and the lower block can accurately control the travel range of the moving parts, avoid movement beyond expectations, and ensure the accuracy of the movement; at the same time, through the limiting effect of the upper block, the flipping force of the push-pull rod is transmitted to the rectangular frame, and further transmitted to the mold to complete the flipping of the mold. In addition, through the setting of the lower block, when flipping, the prefabricated part collides with the lower block through the connecting part, and the prefabricated part is released from the mold, reducing the collision force between the prefabricated part and the ground.

[0013] Furthermore, a first reinforcement portion is provided between the brake portion and the push-pull rod.

[0014] Beneficial effects: Adding the first reinforcement part can significantly enhance the connection strength between the brake part and the push-pull rod, ensuring that the connection will not be deformed or broken when subjected to heavy loads or frequent operations, thereby improving the reliability and stability of the overall structure; strengthening the connection area can effectively disperse stress, avoid excessive concentration of stress at a single connection point, reduce the risk of fatigue and cracks caused by stress concentration, and extend the service life of components; since the first reinforcement part reduces wear and potential structural damage at the connection, the maintenance cycle of the equipment can be extended, reducing maintenance costs.

[0015] Furthermore, a chamfer is provided at one end of the first supporting portion away from the second supporting portion.

[0016] Beneficial effects: Chamfering can expand the entrance width of the equipment or components, making it easier for objects to enter or pass through the area, reducing the jamming phenomenon that may occur due to size limitations, and improving operational efficiency; in mold design or mechanical equipment, chamfering can avoid interference between the first support part and the reinforcing ribs on the upper edge of the mold, ensuring that the support part can smoothly contact or separate from the mold, reducing friction and resistance during operation, and improving the service life of the mold and operational reliability; chamfering can reduce direct contact between sharp edges and molds or other components, reduce the risk of edge wear and damage, and extend the service life of the equipment.

[0017] Furthermore, the rear wheels are universal wheels.

[0018] Beneficial effects: Since the universal wheels can achieve on-the-spot turning, the equipment no longer needs to reserve an additional turning radius when moving. For the operator, the universal wheels simplify the control process. Whether it is straight movement, sideways movement or rotation, it can be achieved through simple operations, allowing the equipment to quickly avoid obstacles, reduce the risk of collision, improve operational safety, reduce operational difficulty, improve operational efficiency, and shorten the work cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A three-dimensional diagram of Example 1 of the present invention;

[0020] Figure 2 A three-dimensional diagram of the push-pull rod of Example 1 of the present invention;

[0021] Figure 3 It is a front view of embodiment 1 of the present invention;

[0022] Figure 4 A three-dimensional image of a rectangular frame of the present invention at one viewing angle;

[0023] Figure 5 A three-dimensional diagram of another viewing angle of the rectangular frame of the present invention;

[0024] Figure 6 It is a three-dimensional diagram of the mold of the present invention;

[0025] Figure 7 A three-dimensional diagram of the push-pull rod of Example 3 of the present invention;

[0026] Figure 8 It is a front view of embodiment 3 of the present invention. DETAILED DESCRIPTION

[0027] The following is further described in detail through specific implementation methods:

[0028] The figure marks in the drawings of the specification include: first long side 101, second long side 102, rotating hole 1021, first short side 103, second short side 104, first support part 105, chamfer 1051, second support part 106, upper block 107, lower block 108, front wheel 110, rear wheel 109, push-pull rod 201, rotating part 2011, brake part 202, first reinforcement part 2021, connecting part 203, stop part 204, second reinforcement part 2041, third reinforcement part 2042, mold body 301, edge 302, reinforcing rib 303.

[0029] Example 1

[0030] Embodiment 1 is basically as attached Figure 1-5 As shown, Figure 1-5 The prefabricated part demoulding device shown in the figure comprises a device body and a pusher, which is used to flip the prefabricated part. Figure 6 The precast part mold shown in the figure is used to disassemble the concrete precast part in the precast part mold, wherein the precast part mold includes a mold body 301, an edge 302 is arranged at the opening of the mold body 301, and a reinforcing rib 303 is arranged between the edge 302 and the mold body 301.

[0031] The equipment body includes a rectangular frame and a tire assembly, such as Figure 4 , Figure 5 As shown, the rectangular frame includes a first long side 101, a second long side 102, a first short side 103 and a second short side 104 that are integrally formed and connected end to end, a rotation hole 1021 is provided on the outer side of the first long side 101 and the second long side 102, a first support portion 105 is provided on the inner side of the first long side 101 and the second long side 102, and a chamfer 1051 is provided at one end of the first support portion 105, a second support portion 106 is provided on the inner side of the first short side 103, and the first support portion 105 and the second support portion 106 are provided. The upper surface of 106 is on the same plane, the second support part 106 and the two first support parts 105 form a U-shaped clamping space, and the chamfer 1051 is set at the opening of the U-shaped clamping space. Through the setting of the wider opening at the chamfer 1051, the clamping space can avoid the reinforcing rib 303 between the upper edge of the mold and the mold body 301, which is convenient for the edge 302 to be clamped into the U-shaped clamping space, and a limiting unit is fixedly set on the outer side of the second short side 104, and the limiting unit includes an upper stop block 107 and a lower stop block 108.

[0032] The tire assembly includes a rotating shaft, a front wheel 110 and a rear wheel 109. The rotating shaft is threadedly connected to the rotating hole 1021. The front wheel 110 is rotatably set on the rotating shaft. The rear wheel 109 is a universal wheel. The universal wheel bolts are connected to the bottom of the second short side 104. When in use, the rectangular frame moves on the ground of the production site through the front wheel 110 and the rear wheel 109, and the mold extension is clamped in the clamping space composed of the first support part 105 and the second support part 106.

[0033] like Figure 2 As shown, the push-pull member includes two push-pull rods 201, and each push-pull rod 201 is provided with a rotating part 2011 and a brake part 202 at the front. Figure 1 As shown, the push-pull rod 201 is rotatably set on the rotating shaft through the rotating part 2011, a first reinforcement part 2021 is set between the brake part 202 and the push-pull rod 201, and a connecting part 203 is welded between the two push-pull rods 201. When the push-pull member rotates upward around the rotating shaft, the upper surface of the connecting part 203 can be fitted with the lower surface of the upper stop block 107. When the push-pull member rotates downward around the rotating shaft, the lower surface of the connecting part 203 can be fitted with the upper surface of the lower stop block 108.

[0034] The specific implementation process is as follows:

[0035] Locking: An operator adjusts the equipment body through the push-pull member so that the opening of the U-shaped locking space is aligned with the short side of the upper edge of the mold, and then pulls the push-pull member so that the upper edge of the mold is locked in the U-shaped locking space;

[0036] Flip: As Figure 3 As shown, the operator pushes the push-pull rod 201 obliquely upward to make the brake part 202 contact the ground. The reaction force between the brake part 202 and the ground makes the rear wheel 109 away from the ground, so as to reduce the friction between the mold and the ground and increase the service life of the mold, so as to avoid the entire device rolling through the front wheel 110 during the pushing process, thereby affecting the flipping operation; in addition, by raising the mold ground, the mold and the ground are prevented from being worn during the flipping process; the push-pull rod 201 is pushed again to make the upper surface of the connecting part 203 fit with the lower surface of the upper stopper 107, so that the force of the push-pull rod 201 is transmitted to the equipment body by means of the upper stopper 107, and then the mold is driven to flip through the equipment body until the first long side 101 is perpendicular to the ground, and the push-pull rod 201 is handed over to the second operator to complete the flipping of the mold;

[0037] Demoulding; after the second operator takes over the push-pull rod 201, he slowly lowers the push-pull rod 201 downward in accordance with the flipping trend of the push-pull rod 201 until the lower stopper 108 contacts the connecting part 203. At this time, the push-pull rod 201 is lowered downward so that the upper part of the second short side 104 collides with the ground, and the demoulding work of the prefabricated part is completed by using the collision force.

[0038] In addition, between flipping and demoulding, the second operator can also push the equipment body toward the first operator through the front wheel 110, so that the demoulding position of the prefabricated component is the same as the previous position of the mold, so as to reduce the occupancy of the production plane and produce more prefabricated components in the same production area.

[0039] Example 2

[0040] Embodiment 2 is basically the same as embodiment 1, with the difference being that, during the flipping process, when the upper surface of the connecting part 203 contacts the lower surface of the upper stop block 107, the front end of the brake part 202 is still some distance from the ground, and the push-pull rod 201 is pushed upward again. At this time, the device moves forward as a whole and flips at the same time. When the brake part 202 contacts the ground, the device stops moving forward, thereby delaying the force time of the brake part 202. At the same time, with the help of the forward rolling force of the device, the pressure on the brake part 202 is reduced. Through the cooperation of the front wheel 110 and the brake part 202, the forward rolling force of the device is converted into the rotational force of the rectangular frame, so as to reduce the force on the brake part and reduce the strength requirement for the brake part 202.

[0041] Example 3

[0042] On the basis of Example 1, Figure 7 As shown, the front portion of the push-pull rod 201 of Embodiment 2 is also provided with a stopper 204, as shown in FIG. Figure 8 As shown, the stopper 204 increases in a spiral shape, with one end tangent to the front wheel 110 and the other end away from the front wheel 110, so that the process of switching from the brake part 202 to the stopper 204 is more stable, avoiding vibration of the equipment body, causing the prefabricated component to separate from the mold in advance and slide directly out of the mold, affecting the demoulding effect and causing safety hazards.

[0043] A second reinforcement portion 2041 is provided between the stop portion 204 and the brake portion 202, and a third reinforcement portion 2042 is provided between the stop portion 204 and the push-pull rod 201 to form a plurality of triangular structures, thereby strengthening the structural strength of the front portion of the push-pull rod 201, so as to adapt to flipping and demoulding on a sloped bottom surface, avoid rolling of the equipment, and affect the flipping control performance.

[0044] The above is only an embodiment of the present invention, and common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that the technical means for solving the problems in the above-mentioned embodiments of the present invention can be used in combination to solve multiple technical problems at the same time. For those skilled in the art, several modifications and improvements can be made without departing from the technical solution of the present invention, which should also be regarded as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A prefabricated part demoulding device, comprising a rectangular frame and two push-pull rods, wherein the rectangular frame is composed of a first long side, a second long side, a first short side and a second short side, and is characterized in that: A first supporting portion is fixedly provided on the inner side of the first long side and the second long side, a second supporting portion is fixed on the inner side of the first short side, an upper surface of the second supporting portion and an upper surface of the first supporting portion are on the same plane, a rotating unit is provided on the rectangular frame, the rotating unit includes a front wheel and a rear wheel, a rotating hole is provided on the outer side of the front part of the first long side and the second long side, a rotating shaft is threadedly connected to the rotating hole, the front wheel is rotatably provided on the rotating shaft, and the rear wheel is rotatably provided below the second short side, both push-pull rods are rotatably provided on the rotation center of the front wheel and are respectively located between the front wheel and the first long side or the second long side, a limiting unit for limiting the rotation range of the push-pull rod is provided above the second short side, a brake portion is provided at the front end of the push-pull rod, an angle between the brake portion and the push-pull rod is greater than 90°, and a distance from the far end of the brake portion to the rotation center is greater than the radius of the front wheel.

2. The prefabricated part demoulding device according to claim 1, characterized in that: A stopper is also arranged at the front of the push-pull rod, and the stopper is fixedly arranged at a side away from the brake part.

3. The prefabricated part demoulding device according to claim 2, characterized in that: The outer extension of the stop part is in a spiral shape, one end of the spiral close to the brake part is tangent to the outer extension of the front wheel, and the other end of the spiral is far away from the front wheel.

4. The prefabricated part demoulding device according to claim 3, characterized in that: The limiting unit comprises an upper stopper, a lower stopper and a connecting portion. The upper stopper and the lower stopper are arranged above the second short side, and the connecting portion is fixedly arranged between the two push-pull rods.

5. The prefabricated part demoulding device according to claim 4, characterized in that: A first reinforcement portion is arranged between the brake portion and the push-pull rod.

6. The prefabricated component demoulding device according to claim 1, characterized in that: A chamfer is provided at one end of the first supporting portion away from the second supporting portion.

7. The precast component demoulding device according to claim 1, characterized in that: The rear wheels are universal wheels.

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