Quick demolding device for well lid casting

Abstract

The invention relates to the technical field of metal casting, in particular to a well lid casting rapid demolding device which comprises a casting body, a demolding assembly is arranged in an inner cavity of the casting body, a lower mold cavity is formed in the upper surface of the casting body, a hydraulic cylinder is fixedly installed on the inner wall of the casting body, and a piston rod is slidably connected to an inner cavity of the hydraulic cylinder. Automatic demolding is achieved through the demolding assembly, the demolding mechanism ejects a workpiece through flexible force, the situation that the workpiece or a mold is damaged due to ejection of the demolding mechanism with too high rigidity or manual beating or jolting demolding is prevented, meanwhile, the ejection height of the workpiece during demolding can be adjusted, and in addition, whether the workpiece is evenly stressed or not during demolding can be detected; the appearance attractiveness of the outer surface of the well lid is guaranteed, deformation is prevented, the durability and the bearing capacity of the well lid are improved, the discharging mode can be switched through the discharging assembly, quantitative discharging is adopted when casting of raw materials is about to be finished, and the proper amount of the casting raw materials is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of metal casting, and in particular to a rapid demoulding device for manhole cover casting. Background Art

[0002] Manhole covers are used to cover deep wells on roads or at home to prevent people or objects from falling, so as to better protect the safety of pedestrians and vehicles. Manhole covers can be divided into many types according to their materials. With the development of technology, cast iron manhole covers have occupied an important position in metal manhole covers. In the production process of manhole covers, demoulding is a crucial link. Traditional manhole cover demoulding methods usually rely on manual operation. For example, after the manhole cover is cast, the staff needs to remove the mold and knock or vibrate it to make the manhole cover fall off the mold.

[0003] The existing technology still has the following problems: 1. First of all, manual knocking or vibration demoulding can easily damage the surface of the manhole cover, and it is easy to cause cracks, dents or other damage during the knocking process, thus affecting the quality and service life of the manhole cover. Secondly, when using a demoulding mechanism, the close fit between the mold and the workpiece and the possible friction, the demoulding mechanism is too rigid, the workpiece may be deformed, cracked or scratched on the surface. If it is not discovered in time, it is easy to cause batches of manhole covers to be unqualified. When the demoulding mechanism is ejected, it is difficult to judge whether the mold is evenly stressed, which will cause the surface of the manhole cover to be unevenly squeezed, which not only affects the aesthetics of the manhole cover, but also may reduce its durability and carrying capacity.

[0004] 2. In the existing manhole cover production process, the smelted molten iron is manually cast into the mold. The temperature of the molten iron is relatively high, and manual casting can easily scald the workers. In addition, the amount of molten iron cannot be adjusted according to the size of the manhole cover during the casting process. Excessive casting of molten iron will lead to waste. At the same time, molten iron overflowing from the mold can easily damage equipment or workers. Pouring too little will cause the thickness, size or weight of the manhole cover to not meet the design requirements, thereby affecting its overall quality. Summary of the invention

[0005] In order to overcome the shortcomings of manual knocking or jarring demoulding which may easily cause damage to the surface of the manhole cover, the close fit between the mold and the workpiece and the possible friction when using a demoulding mechanism, the demoulding mechanism is too rigid, the workpiece may be deformed, cracked or scratched on the surface, and the casting process cannot be adjusted according to the size of the manhole cover. The purpose of the present invention is to provide a manhole cover casting rapid demoulding device to solve the above-mentioned shortcomings.

[0006] The present application provides a quick demoulding device for casting a manhole cover, comprising a casting body, an inner cavity of the casting body is provided with a demoulding assembly, an upper surface of the casting body is provided with a lower mold cavity, an inner wall of the casting body is fixedly installed with a hydraulic cylinder, an inner cavity of the hydraulic cylinder is slidably connected with a piston rod, an upper mold is placed on the upper surface of the casting body, a clamping block is slidably connected with the upper surface of the upper mold, a casting port is provided on the outer surface of the upper mold, a material discharge assembly is provided on the upper surface of the casting body, a hopper is fixedly installed on the outer surface of the casting body, the casting port is located directly below the hopper, the demoulding assembly comprises a rotating frame, and the inner cavity of the casting body is slidably connected with a demoulding rod. The demoulding rod and the lower mold cavity are formed as one body, the inner cavity of the rotating frame is slidably connected with a protrusion, the inner cavity of the protrusion is provided with an adjustment mechanism, and buffer mechanisms are provided at both ends of the adjustment mechanism. An alarm mechanism is fixedly installed on the lower surface of the rotating frame, and a pressure detection mechanism is provided on the outer surface of the alarm mechanism. A rotating rod is fixedly installed in the middle position of the bottom of the rotating frame, the rotating rod and the inner wall of the casting body are rotatably connected, a belt is sleeved on the outer surface of the rotating rod, a stepper motor is provided on the inner wall of the casting body, and the output end of the stepper motor is sleeved on the belt. There are four protrusions, adjustment mechanisms, buffer mechanisms, alarm mechanisms and pressure detection mechanisms, and they are evenly distributed.

[0007] Furthermore, the adjustment mechanism includes an adjustment frame, the inner cavity of the adjustment frame is rotatably connected to a threaded rod, the upper surface of the adjustment frame is slidably connected to a slider, the outer surface of the slider is fixedly installed with a driving rod, the upper surface of the adjustment frame is fixedly installed with a storage rod, the inner cavity of the storage rod is slidably connected with a lifting rod, the top of the lifting rod is fixedly installed with a lifting plate, the lower surface of the lifting plate is fixedly installed with a driving plate, the outer surface of the driving plate is provided with a driving groove, and the driving groove is inclined.

[0008] Furthermore, the lifting plate is fixedly connected to the middle bottom wall of the protrusion, the protrusion is convex in the middle and inclined at both ends downward, the lower surfaces of the adjustment frame and the rotating frame are tightly fitted, and the driving rod and the driving groove are slidably connected.

[0009] Furthermore, the buffer mechanism includes a buffer rod, the inner cavity of the buffer rod is slidably connected to a pressure ring, the outer surface of the buffer rod is sleeved with a first spring, the inner cavity of the buffer rod is rotatably connected to a first bolt through a thread, one end of the first bolt is in close contact with the pressure ring, the adjustment frame and the buffer rod are slidably connected, the buffer rod and the rotating frame are fixedly connected, and the first spring is located between the adjustment frame and the pressure ring.

[0010] Furthermore, the alarm mechanism includes a fixed frame, an alarm is fixedly installed on the outer surface of the fixed frame, the inner cavity of the fixed frame is connected to a second bolt by threaded rotation, a button is provided on the lower surface of the adjustment frame, the button and the alarm are electrically connected, pressing the button controls the alarm to sound an alarm, the second bolt is located directly below the button, and the fixed frame and the rotating frame are fixedly connected.

[0011] Furthermore, the pressure detection mechanism includes a detection frame, the inner cavity of the detection frame is provided with a first card slot, the inner cavity of the detection frame is slidably connected to a detection block, the inner cavity of the detection block is slidably connected to an elastic rod, the outer surface of the elastic rod is fixedly connected to a connecting sleeve, the connecting sleeve and the inner wall of the detection block are slidably connected, the outer surface of the elastic rod is sleeved with a second spring, the outer surface of the detection block is fixedly installed with a pointer, and the outer surface of the adjustment frame is fixedly installed with a pressure bar.

[0012] Furthermore, the first card slots are evenly distributed, and a groove is provided on the outer surface of the detection frame where each first card slot is located, the elastic rod is engaged with the first card slot, the second spring is located between the connecting sleeve and the inner wall of the detection block, the pointer points to the groove on the outer surface of the detection frame, the elastic rod and the pointer are at the same height, and the pressure bar is located directly above the detection block and close to the middle part of the detection block.

[0013] Furthermore, the unloading component includes a casting barrel, a slide groove is provided on the lower surface of the casting barrel, a unloading port is provided at the bottom end of the casting barrel, the unloading port is located on the slide groove, a second clamping groove is provided on the lower surface of the slide groove, the second clamping groove is located on both sides of the unloading port, a slip ring is slidably connected to the inner cavity of the slide groove, a handle is fixedly installed on the lower surface of the slip ring, a first discharge pipe is fixedly installed on the lower surface of the slip ring, and a quantitative unloading mechanism is fixedly installed on the lower surface of the slip ring.

[0014] Furthermore, the quantitative unloading mechanism includes a unloading rack, the upper surface of which is provided with a connecting hole, the connecting hole and the sliding ring are fixedly connected, a baffle is slidably connected to the inner wall of the top end of the unloading rack, a quantitative cylinder is fixedly connected to the lower surface of the baffle, a block is fixedly installed in the middle part of the lower surface of the baffle, a hand lever is fixedly installed at one end of the baffle, and a second discharge pipe is fixedly installed on the lower surface of the unloading rack.

[0015] Furthermore, a connecting hole is provided on the outer surface of the slip ring, there are two connecting holes, one of which is connected to the first discharge pipe, and the other is connected to the connecting hole, protruding rods are provided on both sides of the connecting hole, and a third spring is provided in the inner cavity of the slip ring where the protruding rod is located, the third spring and the protruding rod are elastically connected, the protruding rod is engaged with the second slot, and when the stop block is in contact with the inner wall on one side close to the connecting hole, the metering cylinder is connected to the connecting hole, and when one end of the baffle is in contact with the inner wall on one end close to the second discharge pipe, the metering cylinder is connected to the second discharge pipe, and when the slip ring rotates, one of the connecting holes coincides with the discharge port, and at this time the protruding rod is engaged with the second slot.

[0016] The technical solution provided by this application has at least the following technical effects or advantages: 1. The use of a demoulding component effectively solves the problem that the surface of the manhole cover is easily damaged by manual knocking or jarring demoulding, and cracks, dents or other damages are easily generated during the knocking process, thereby affecting the quality and service life of the manhole cover. When a demoulding mechanism is used, the close fit between the mold and the workpiece and the possible friction force, the demoulding mechanism is too rigid, the workpiece may be deformed, cracked or scratched on the surface, and if it is not discovered in time, it is easy to cause batches of manhole covers produced to be unqualified in quality. When the demoulding mechanism is ejected, it is difficult to judge whether the mold is evenly stressed, which will cause the surface of the manhole cover to be unevenly squeezed, which not only affects the aesthetics of the manhole cover, but also may reduce its durability and carrying capacity. The present invention automatically demoulds through a demoulding component, and the demoulding mechanism uses a flexible force to eject the workpiece, preventing the demoulding mechanism with too strong rigidity from ejecting or artificial knocking or jarring demoulding from damaging the workpiece or the mold, and at the same time, the ejection height of the workpiece during demoulding can be adjusted. In addition, it can detect whether the workpiece is evenly stressed during demoulding, ensure the aesthetics of the outer surface of the manhole cover, and prevent deformation, thereby improving the durability and carrying capacity of the manhole cover.

[0017] 2. The use of a blanking component effectively solves the problem that in the existing manhole cover production process, smelted molten iron is manually poured into a mold. The temperature of the molten iron is relatively high, and manual casting can easily scald the workers. In addition, the amount of molten iron cannot be adjusted according to the size of the manhole cover during the casting process. Pouring too much molten iron will cause waste, and molten iron overflowing from the mold can easily damage equipment or workers. Pouring too little will cause the thickness, size or weight of the manhole cover to be inconsistent with the design requirements, thereby affecting its overall quality. The present invention can switch the blanking method through the blanking component, and adopts quantitative blanking when the casting of the raw material is about to end, so as to ensure that the casting raw material is of appropriate amount, thereby avoiding waste of raw materials while ensuring that the thickness, size or weight of the manhole cover meets the design requirements and meets production needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of Example 1 of the present application; Figure 2 This is a schematic diagram of the upper mold structure in Example 1 of the present application; Figure 3 This is a schematic cross-sectional view of a local structure of a casting body in Example 1 of the present application; Figure 4 This is a schematic diagram of the demoulding assembly structure in Example 1 of the present application; Figure 5 This is a schematic diagram of the rotating rod structure in Example 1 of the present application; Figure 6 This is a schematic diagram of the structure of the alarm mechanism in Example 1 of the present application; Figure 7 This is a schematic diagram of the structure of the adjustment mechanism in Example 1 of the present application; Figure 8This is a schematic diagram of the structure of the buffer mechanism in Example 1 of the present application; Fig. 9 This is a schematic diagram of the structure of the pressure detection mechanism in Example 1 of the present application; Fig.10 This is a schematic diagram of the pointer structure in Example 1 of the present application; Fig.11 This is a schematic diagram of the chute structure in the second embodiment of the present application; Fig.12 This is a schematic diagram of the structure of the first discharge pipe in Example 2 of the present application; Fig.13 This is a schematic diagram of the structure of the quantitative feeding mechanism in Example 2 of the present application.

[0019] In the figure: 1, casting body; 2, demoulding assembly; 21, rotating frame; 22, demoulding rod; 23, bump; 24, adjusting mechanism; 241, adjusting frame; 242, threaded rod; 243, slider; 244, driving rod; 245, storage rod; 246, lifting rod; 247, lifting plate; 248, driving plate; 249, driving groove; 25, buffer mechanism; 251, buffer rod; 252, pressure ring; 253, first spring; 254, first bolt; 26, alarm mechanism; 261, fixing frame; 262, alarm; 263, second bolt; 264, button; 27, pressure detection mechanism; 271, detection frame; 272, first A card slot; 273, a detection block; 274, an elastic rod; 275, a connecting sleeve; 276, a second spring; 277, a pointer; 278, a pressure bar; 28, a rotating rod; 29, a belt; 210, a stepping motor; 3, a lower mold cavity; 4, a hydraulic cylinder; 5, an upper mold; 6, a card block; 7, a casting port; 8, a discharge assembly; 81, a casting barrel; 82, a slide; 83, a discharge port; 84, a slip ring; 85, a handle; 86, a first discharge pipe; 87, a quantitative discharge mechanism; 871, a discharge rack; 872, a connecting hole; 873, a baffle; 874, a quantitative cylinder; 875, a block; 876, a hand lever; 877, a second discharge pipe; 9, a hopper. DETAILED DESCRIPTION

[0020] With regard to the close fit between the mold and the workpiece and the possible friction, the demoulding mechanism is too rigid, and the workpiece may be deformed, cracked or have surface scratches. The present invention automatically demoulds through a demoulding assembly, and the demoulding mechanism uses a flexible force to eject the workpiece, thereby preventing the demoulding mechanism from being too rigid or manual knocking or shocking to demould and damage the workpiece or the mold. In the casting process, the amount cannot be adjusted according to the size of the manhole cover to be manufactured, and excessive casting of molten iron will lead to waste. The present invention can switch the feeding method through a feeding assembly, and adopts quantitative feeding when the casting of the raw materials is about to end, to ensure the casting of an appropriate amount of raw materials.

[0021] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods. Embodiment 1:

[0022] See also Figure 1 and Figure 2 As shown, a quick demoulding device for casting a manhole cover comprises a casting body 1, an inner cavity of the casting body 1 is provided with a demoulding component 2, an upper surface of the casting body 1 is provided with a lower mold cavity 3, a hydraulic cylinder 4 is fixedly installed on the inner wall of the casting body 1, a piston rod is slidably connected to the inner cavity of the hydraulic cylinder 4, an upper mold 5 is placed on the upper surface of the casting body 1, a clamping block 6 is slidably connected to the upper surface of the upper mold 5, a casting port 7 is provided on the outer surface of the upper mold 5, a material discharge component 8 is provided on the upper surface of the casting body 1, and a lower mold cavity 3 is fixedly installed on the outer surface of the casting body 1. There is a hopper 9, and a pouring port 7 is located just below the hopper 9 for easy feeding. A feeding assembly 8 is used to place molten iron, and the amount of feeding is controlled through the feeding assembly 8. The casting liquid enters the pouring port 7 through the hopper 9. At this time, the workpiece is formed in the inner cavity of the upper mold 5 and the lower mold cavity 3. When demolding, the hydraulic cylinder 4 drives the piston rod to move, and the upper mold 5 is lifted and the clamping block 6 is moved so that the clamping block 6 is stuck on the clamping block 6. The upper mold 5 is moved away by the movement of the hydraulic cylinder 4. At this time, the workpiece is demolded by the demolding assembly 2.

[0023] See also Figure 3 and Figure 4As shown, the demoulding assembly 2 includes a rotating frame 21, the inner cavity of the casting body 1 is slidably connected with a demoulding rod 22, the demoulding rod 22 and the lower mold cavity 3 are integrated, the inner cavity of the rotating frame 21 is slidably connected with a protrusion 23, the inner cavity of the protrusion 23 is provided with an adjustment mechanism 24, and the two ends of the adjustment mechanism 24 are provided with a buffer mechanism 25, the lower surface of the rotating frame 21 is fixedly installed with an alarm mechanism 26, the outer surface of the alarm mechanism 26 is provided with a pressure detection mechanism 27, and the middle position of the bottom of the rotating frame 21 is fixedly installed with a The rotating rod 28 is rotatably connected to the inner wall of the casting body 1. The outer surface of the rotating rod 28 is sleeved with a belt 29. The inner wall of the casting body 1 is provided with a stepper motor 210. The output end of the stepper motor 210 is sleeved with the belt 29. The convex block 23, the adjustment mechanism 24, the buffer mechanism 25, the alarm mechanism 26 and the pressure detection mechanism 27 are four and evenly distributed. When the manhole cover cast in the inner cavity of the lower mold cavity 3 is demoulded, the belt 29 is driven to rotate by the operation of the stepper motor 210. The rotation of the belt 29 drives the rotating rod 28 to rotate, and the rotation of the rotating rod 28 drives the rotating frame 21 to rotate. The rotation of the rotating frame 21 drives the protrusion 23 to rotate. When the protrusion 23 rotates, the demoulding rod 22 of the manhole cover lifts the demoulding rod 22, and the demoulding rod 22 lifts and drives the demoulding rod 22 to move upward in the inner cavity of the lower mold cavity 3, so that the workpiece is lifted in the inner cavity of the lower mold cavity 3, thereby completing the demoulding process. The adjustment mechanism 24 is used to adjust the height of the protrusion 23, which is convenient for fine-tuning the height of the workpiece lift according to needs, and is convenient for taking the workpiece out of the inner cavity of the lower mold cavity 3. The buffer mechanism 25 has a certain flexibility during demoulding to prevent the protrusion 23 from being too rigid and damaging the workpiece. When the workpiece and the inner wall of the lower mold cavity 3 are bonded together, the demoulding rod 22 and the protrusion 23 are squeezed to drive the alarm mechanism 26 to sound an alarm, which is used to remind the staff to maintain the equipment. The pressure detection mechanism 27 is used to detect whether the workpiece is evenly stressed during demoulding, ensure the integrity of the outer surface of the workpiece, and avoid internal defects that reduce the strength and durability of the manhole cover.

[0024] See also Figure 5 and Figure 7As shown, the adjusting mechanism 24 includes an adjusting frame 241, the inner cavity of the adjusting frame 241 is rotatably connected with a threaded rod 242, the upper surface of the adjusting frame 241 is slidably connected with a slider 243, the outer surface of the slider 243 is fixedly installed with a driving rod 244, the upper surface of the adjusting frame 241 is fixedly installed with a storage rod 245, the inner cavity of the storage rod 245 is slidably connected with a lifting rod 246, the top of the lifting rod 246 is fixedly installed with a lifting plate 247, the lower surface of the lifting plate 247 is fixedly installed with a driving plate 248, the outer surface of the driving plate 248 is provided with a driving groove 249, the driving groove 249 is inclined, the lifting plate 247 is fixedly connected to the middle bottom wall of the protrusion 23, the protrusion 23 is convex in the middle, and the two ends are inclined downward, the adjusting frame 241 and the lower part of the rotating frame 21 The surfaces fit tightly, and the driving rod 244 and the driving groove 249 are slidably connected. When the demolding height of the demolding rod 22 needs to be adjusted, the slider 243 is driven to slide on the adjustment frame 241 by rotating the threaded rod 242, and the sliding of the slider 243 drives the driving rod 244 to slide in the driving groove 249 on the driving plate 248, so that the movement of the driving rod 244 drives the driving plate 248 to upgrade, and the upgrading of the driving plate 248 drives the lifting plate 247 to lift and lower, so that the lifting rod 246 slides in the inner cavity of the storage rod 245, and the upgrading of the lifting plate 247 drives the height of the protrusion 23 in the inner cavity of the rotating frame 21 to change, so that when the rotating frame 21 rotates, the height of the demolding rod 22 lifted by the protrusion 23 changes, so that the total demolding height can be adjusted according to needs.

[0025] See also Figure 5 , Figure 6 and Figure 8As shown, the buffer mechanism 25 includes a buffer rod 251, the inner cavity of the buffer rod 251 is slidably connected to a pressure ring 252, the outer surface of the buffer rod 251 is sleeved with a first spring 253, the inner cavity of the buffer rod 251 is rotatably connected to a first bolt 254 through a thread, one end of the first bolt 254 is in close contact with the pressure ring 252, the adjustment frame 241 and the buffer rod 251 are slidably connected, the buffer rod 251 and the rotating frame 21 are fixedly connected, the first spring 253 is located between the adjustment frame 241 and the pressure ring 252, and the alarm mechanism 26 includes a fixed frame 261, the outer surface of the fixed frame 261 is fixedly installed with an alarm 262, and the inner cavity of the fixed frame 261 is connected to the first bolt 254 through a thread. The second bolt 263 is connected to the thread rotation, and a button 264 is provided on the lower surface of the adjustment frame 241. The button 264 is electrically connected to the alarm 262. The pressing of the button 264 controls the alarm 262 to sound an alarm. The second bolt 263 is located directly below the button 264. The fixed frame 261 and the rotating frame 21 are fixedly connected. The flexible force of the adjustment frame 241 is adjusted by the buffer mechanism 25, that is, the position of the first bolt 254 in the inner cavity of the buffer rod 251 is changed by rotating the first bolt 254. The movement of the first bolt 254 drives the pressure ring 252 to slide on the buffer rod 251, and the sliding of the buffer rod 251 drives the elasticity of the first spring 253. The force changes, so that the squeezing force of the first spring 253 on the adjusting frame 241 can be changed according to the actual situation, and the adjusting frame 241 and the rotating frame 21 are kept in close contact without external force. The buffer mechanism 25 makes the adjusting mechanism 24 flexibly fixed on the rotating frame 21. When there is a large friction between the workpiece and the lower mold cavity 3, the demolding rod 22 and the protrusion 23 squeeze and drive the adjusting mechanism 24 to move downward. At this time, the button 264 on the adjusting frame 241 moves downward, so that the second bolt 263 and the button 264 are in contact and squeeze the button 264, so that the alarm 262 on the fixed frame 261 sounds an alarm, reminding the staff that a large friction is generated during demolding, and observing the work. The second bolt 263 can be rotated to change the distance between the second bolt 263 and the button 264, and an alarm can be sounded when the button 264 reaches the downward distance as required, and contact between the second bolt 263 and the button 264 can be avoided within the flexible force range, ensuring that there will be no alarm during normal demoulding and preventing the production of batches of unqualified products, thereby achieving the effect of protecting the workpiece during demoulding and preventing the workpiece from being damaged by the adhesion of the workpiece to the inner cavity of the mold and forced demoulding.

[0026] See also Figure 6 , Figure 7 , Fig. 9 and Fig.10As shown, the pressure detection mechanism 27 includes a detection frame 271, the inner cavity of the detection frame 271 is provided with a first card slot 272, the inner cavity of the detection frame 271 is slidably connected to a detection block 273, the inner cavity of the detection block 273 is slidably connected to an elastic rod 274, the outer surface of the elastic rod 274 is fixedly connected to a connecting sleeve 275, the connecting sleeve 275 and the inner wall of the detection block 273 are slidably connected, the outer surface of the elastic rod 274 is sleeved with a second spring 276, the outer surface of the detection block 273 is fixedly installed with a pointer 277, and the outer surface of the adjustment frame 241 is fixedly installed There is a pressure bar 278, the first card slots 272 are evenly distributed, and the outer surface of the detection frame 271 where each first card slot 272 is located is provided with a groove, the elastic rod 274 is engaged with the first card slot 272, the second spring 276 is located between the connecting sleeve 275 and the inner wall of the detection block 273, the pointer 277 points to the groove on the outer surface of the detection frame 271, the elastic rod 274 and the pointer 277 are located at the same height, the pressure bar 278 is located just above the detection block 273, and close to the middle part of the detection block 273, and is used to detect the detachment through the pressure detection mechanism 27 When the force is uniform during the molding process, several adjusting mechanisms 24 and buffer mechanisms 25 are adjusted to the same parameters. When the force is uneven, the protrusion 23 squeezes the demoulding rod 22 so that the workpiece has a reaction force on the protrusion 23, so that the adjusting frame 241 drives the pressure bar 278 to move downward, and the pressure bar 278 moves downward to drive the pressure bar 278 to squeeze the detection block 273 in the inner cavity of the detection frame 271. At this time, under the external force of the pressure bar 278, the detection block 273 slides in the inner cavity of the detection frame 271, so that the connecting sleeve 275 squeezes the second spring 276, so that the elastic force The rod 274 and the first slot 272 are disengaged, and finally the elastic rod 274 and the other first slot 272 are engaged under the pressure of the pressure bar 278, so that the position of the detection block 273 changes. The pointer 277 points to the position of the groove to determine whether the pressure of the pressure bar 278 on the detection block 273 is equal. When the direction of the pointer 277 of the four pressure detection mechanisms 27 changes, the equipment needs to be maintained to prevent uneven force during demolding, so that there is no scratch on the outer surface of the manhole cover when demolding, thereby improving the durability and carrying capacity of the manhole cover. Embodiment 2:

[0027] See also Figure 1 and Fig.11As shown, the material discharge assembly 8 includes a casting bucket 81, a chute 82 is provided on the lower surface of the casting bucket 81, a material discharge port 83 is provided at the bottom end of the casting bucket 81, the material discharge port 83 is located on the chute 82, a second card slot is provided on the lower surface of the chute 82, the second card slot is located on both sides of the material discharge port 83, a slip ring 84 is slidably connected to the inner cavity of the chute 82, a handle 85 is fixedly installed on the lower surface of the slip ring 84, a first discharge pipe 86 is fixedly installed on the lower surface of the slip ring 84, and a quantitative discharge machine is fixedly installed on the lower surface of the slip ring 84 Structure 87, raw materials are fed through the first discharge pipe 86 and the quantitative discharge mechanism 87, the first discharge pipe 86 is used for large-scale discharge, and the quantitative discharge mechanism 87 is used for quantitative discharge. When only a small amount of casting liquid is needed, the discharge can be adjusted from the first discharge pipe 86 to the quantitative discharge mechanism 87, and the handle 85 is turned to drive the slip ring 84 to rotate in the inner cavity of the slide groove 82, so that the discharge port 83 on the casting barrel 81 is aligned with one of the connecting holes, thereby realizing the switching between large-scale discharge and quantitative discharge, and preventing the waste of raw materials.

[0028] See also Fig.12 and Fig.13As shown, the quantitative unloading mechanism 87 includes an unloading frame 871, the upper surface of the unloading frame 871 is provided with a connecting hole 872, the connecting hole 872 is fixedly connected to the slip ring 84, the top inner wall of the unloading frame 871 is slidably connected with a baffle 873, the lower surface of the baffle 873 is fixedly connected with a quantitative cylinder 874, a stopper 875 is fixedly installed in the middle part of the lower surface of the baffle 873, a hand lever 876 is fixedly installed at one end of the baffle 873, a second discharge pipe 877 is fixedly installed on the lower surface of the unloading frame 871, and the outer surface of the slip ring 84 is fixedly installed with a second discharge pipe 877. The surface is provided with a connecting hole, there are two connecting holes, one of which is connected to the first discharge pipe 86, and the other is connected to the connecting hole 872. Lugs are arranged on both sides of the connecting hole, and a third spring is arranged in the inner cavity of the sliding ring 84 where the lugs are located. The third spring is elastically connected to the lugs, and the lugs are engaged with the second slot. When the stopper 875 is in contact with the inner wall of the side close to the connecting hole 872, the quantitative cylinder 874 is connected to the connecting hole 872, and when one end of the baffle 873 is in contact with the inner wall of one end close to the second discharge pipe 877, the quantitative cylinder 874 and the second discharge pipe 877 are connected. When the slip ring 84 rotates, one of the connecting holes coincides with the discharge port 83, and at this time, the convex rod and the second slot are engaged. In the process of rotating the slip ring 84, the positions of the first discharge pipe 86 and the quantitative discharge mechanism 87 are stabilized respectively by the engagement of the convex rod and the second slot, so that when the discharge mode is switched, the discharge port 83 is connected to one of the connecting holes. When feeding is just needed, the first discharge pipe 86 can be used for feeding. When the feeding is about to be completed, the quantitative discharge mechanism 87 can be used for quantitative feeding. When the quantitative discharge mechanism 87 is feeding, , by pulling the connecting hole 872 to connect the connecting hole 872 and the metering cylinder 874, the raw material in the inner cavity of the casting bucket 81 flows into the inner cavity of the metering cylinder 874, and the hand lever 876 is moved to make the baffle 873 slide in the inner cavity of the discharge rack 871, so that the metering cylinder 874 and the second discharge pipe 877 are connected, so that the amount of material discharged each time is the same as the capacity of the metering cylinder 874, and quantitative discharging is realized, so that the amount used during pouring remains stable, avoiding waste of excessive feeding, molten iron overflow and injury to workers, and at the same time avoiding too little amount affecting the casting quality of the manhole cover.

[0029] In summary, the material discharge assembly 8 is used to place molten iron, and the material discharge is controlled by the material discharge assembly 8. The casting liquid enters the casting port 7 through the hopper 9. At this time, the workpiece is formed in the inner cavities of the upper mold 5 and the lower mold cavity 3. When demolding, the hydraulic cylinder 4 drives the piston rod to move, and the upper mold 5 is lifted and the clamping block 6 is moved so that the clamping block 6 is clamped on the clamping block 6. The upper mold 5 is moved away by the movement of the hydraulic cylinder 4. At this time, the workpiece is demolded by the work of the demolding assembly 2, and the convex block 23 is driven to rotate by the work of the stepping motor 210. When the convex block 23 rotates, the manhole cover demolding rod 22 causes the demolding rod 22 to lift up. The demolding rod 22 lifts up and drives the demolding rod 22 to move upward in the inner cavity of the lower mold cavity 3, so that the workpiece is lifted up in the inner cavity of the lower mold cavity 3, thereby completing the demolding process. The adjusting mechanism 24 is used to adjust the height of the convex block 23, so that the height of the workpiece can be fine-tuned according to needs, so as to facilitate the workpiece to be taken out of the inner cavity of the lower mold cavity 3. The buffer mechanism 25 is used to It has a certain flexibility during demoulding to prevent the protrusion 23 from being too rigid and damaging the workpiece. When the workpiece and the inner wall of the lower mold cavity 3 are bonded together, the demoulding rod 22 and the protrusion 23 are squeezed to drive the alarm mechanism 26 to sound an alarm to remind the staff to maintain the equipment. The pressure detection mechanism 27 is used to detect whether the workpiece is evenly stressed during demoulding to ensure the integrity of the outer surface of the workpiece and avoid internal defects that reduce the strength and durability of the manhole cover. Raw materials are loaded through the first discharge pipe 86 and the quantitative discharge mechanism 87. The first discharge pipe 86 is used for large-scale discharge, and the quantitative discharge mechanism 87 is used for quantitative discharge. When only a small amount of casting liquid is needed, it can be adjusted from the first discharge pipe 86 to the quantitative discharge mechanism 87 for discharge. By turning the handle 85, the slip ring 84 is driven to rotate in the inner cavity of the slide groove 82, so that the discharge port 83 on the casting bucket 81 is aligned with one of the connecting holes, thereby realizing the switching between large-scale discharge and quantitative discharge, and preventing raw material waste.

[0030] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

[0031] What has been described above is only a preferred specific implementation manner of the embodiments of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes according to the technical scheme and concept of the present application within the technical scope disclosed in the present application, which should be covered by the protection scope of the present application.

Claims

1. A quick demoulding device for manhole cover casting, comprising a casting body (1), characterized in that: The inner cavity of the casting body (1) is provided with a demoulding component (2), the upper surface of the casting body (1) is provided with a lower mold cavity (3), the inner wall of the casting body (1) is fixedly mounted with a hydraulic cylinder (4), the inner cavity of the hydraulic cylinder (4) is slidably connected with a piston rod, an upper mold (5) is placed on the upper surface of the casting body (1), a clamping block (6) is slidably connected with the upper surface of the upper mold (5), a casting port (7) is provided on the outer surface of the upper mold (5), a material discharge component (8) is provided on the upper surface of the casting body (1), a hopper (9) is fixedly mounted on the outer surface of the casting body (1), and the casting port (7) is located directly below the hopper (9); The demoulding assembly (2) comprises a rotating frame (21), the inner cavity of the casting body (1) is slidably connected to a demoulding rod (22), the demoulding rod (22) and the lower mold cavity (3) are formed as a whole, the inner cavity of the rotating frame (21) is slidably connected to a protrusion (23), the inner cavity of the protrusion (23) is provided with an adjustment mechanism (24), and buffer mechanisms (25) are provided at both ends of the adjustment mechanism (24), an alarm mechanism (26) is fixedly mounted on the lower surface of the rotating frame (21), and a pressure detection mechanism (25) is provided on the outer surface of the alarm mechanism (26). 27), a rotating rod (28) is fixedly installed at the middle position of the bottom of the rotating frame (21), the rotating rod (28) is rotatably connected to the inner wall of the casting body (1), a belt (29) is sleeved on the outer surface of the rotating rod (28), a stepping motor (210) is arranged on the inner wall of the casting body (1), the output end of the stepping motor (210) is sleeved on the belt (29), and the protrusion (23), the adjustment mechanism (24), the buffer mechanism (25), the alarm mechanism (26) and the pressure detection mechanism (27) are four in number and are evenly distributed.

2. A rapid demoulding device for manhole cover casting as claimed in claim 1, characterized in that: The adjustment mechanism (24) comprises an adjustment frame (241), the inner cavity of the adjustment frame (241) is rotatably connected to a threaded rod (242), the upper surface of the adjustment frame (241) is slidably connected to a slider (243), the outer surface of the slider (243) is fixedly mounted with a driving rod (244), the upper surface of the adjustment frame (241) is fixedly mounted with a storage rod (245), the inner cavity of the storage rod (245) is slidably connected to a lifting rod (246), the top end of the lifting rod (246) is fixedly mounted with a lifting plate (247), the lower surface of the lifting plate (247) is fixedly mounted with a driving plate (248), the outer surface of the driving plate (248) is provided with a driving groove (249), and the driving groove (249) is arranged obliquely.

3. A rapid demoulding device for manhole cover casting as claimed in claim 2, characterized in that: The lifting plate (247) is fixedly connected to the middle bottom wall of the protrusion (23); the protrusion (23) is raised in the middle and inclined at both ends downward; the lower surfaces of the adjustment frame (241) and the rotating frame (21) are tightly fitted; and the driving rod (244) and the driving groove (249) are slidably connected.

4. A rapid demoulding device for manhole cover casting as claimed in claim 2, characterized in that: The buffer mechanism (25) comprises a buffer rod (251), the inner cavity of the buffer rod (251) is slidably connected to a pressure ring (252), the outer surface of the buffer rod (251) is sleeved with a first spring (253), the inner cavity of the buffer rod (251) is rotatably connected to a first bolt (254) through a thread, one end of the first bolt (254) is in close contact with the pressure ring (252), the adjustment frame (241) and the buffer rod (251) are slidably connected, the buffer rod (251) and the rotating frame (21) are fixedly connected, and the first spring (253) is located between the adjustment frame (241) and the pressure ring (252).

5. A rapid demoulding device for manhole cover casting as claimed in claim 2, characterized in that: The alarm mechanism (26) comprises a fixing frame (261), an alarm (262) is fixedly mounted on the outer surface of the fixing frame (261), a second bolt (263) is rotatably connected to the inner cavity of the fixing frame (261) via a thread, a button (264) is provided on the lower surface of the adjustment frame (241), the button (264) and the alarm (262) are electrically connected, and pressing the button (264) controls the alarm (262) to sound an alarm, the second bolt (263) is located directly below the button (264), and the fixing frame (261) and the rotating frame (21) are fixedly connected.

6. A rapid demoulding device for manhole cover casting as claimed in claim 2, characterized in that: The pressure detection mechanism (27) comprises a detection frame (271), the inner cavity of the detection frame (271) is provided with a first clamping groove (272), the inner cavity of the detection frame (271) is slidably connected to a detection block (273), the inner cavity of the detection block (273) is slidably connected to an elastic rod (274), the outer surface of the elastic rod (274) is fixedly connected to a connecting sleeve (275), the connecting sleeve (275) and the inner wall of the detection block (273) are slidably connected, the outer surface of the elastic rod (274) is sleeved with a second spring (276), the outer surface of the detection block (273) is fixedly mounted with a pointer (277), and the outer surface of the adjustment frame (241) is fixedly mounted with a pressure bar (278).

7. A rapid demoulding device for manhole cover casting as claimed in claim 6, characterized in that: The first card slots (272) are evenly distributed, and a groove is provided on the outer surface of the detection frame (271) where each first card slot (272) is located. The elastic rod (274) is engaged with the first card slot (272). The second spring (276) is located between the connecting sleeve (275) and the inner wall of the detection block (273). The pointer (277) points to the groove on the outer surface of the detection frame (271). The elastic rod (274) and the pointer (277) are located at the same height. The pressure bar (278) is located directly above the detection block (273) and close to the middle of the detection block (273).

8. A rapid demoulding device for manhole cover casting as claimed in claim 1, characterized in that: The material discharge assembly (8) comprises a casting bucket (81), a chute (82) is provided on the lower surface of the casting bucket (81), a material discharge port (83) is provided at the bottom end of the casting bucket (81), the material discharge port (83) is located on the chute (82), a second clamping groove is provided on the lower surface of the chute (82), the second clamping groove is located on both sides of the material discharge port (83), a slip ring (84) is slidably connected to the inner cavity of the chute (82), a handle (85) is fixedly installed on the lower surface of the slip ring (84), a first discharge pipe (86) is fixedly installed on the lower surface of the slip ring (84), and a quantitative material discharge mechanism (87) is fixedly installed on the lower surface of the slip ring (84).

9. A rapid demoulding device for manhole cover casting as claimed in claim 8, characterized in that: The quantitative unloading mechanism (87) comprises an unloading frame (871), the upper surface of the unloading frame (871) is provided with a connecting hole (872), the connecting hole (872) and the sliding ring (84) are fixedly connected, a baffle (873) is slidably connected to the inner wall of the top end of the unloading frame (871), a quantitative cylinder (874) is fixedly connected to the lower surface of the baffle (873), a stopper (875) is fixedly installed in the middle part of the lower surface of the baffle (873), a hand lever (876) is fixedly installed at one end of the baffle (873), and a second discharge pipe (877) is fixedly installed on the lower surface of the unloading frame (871).

10. A rapid demoulding device for manhole cover casting as claimed in claim 9, characterized in that: The outer surface of the slip ring (84) is provided with a connecting hole, and there are two connecting holes, one of which is connected to the first discharge pipe (86), and the other is connected to the connecting hole (872). Lugs are provided on both sides of the connecting holes, and a third spring is provided in the inner cavity of the slip ring (84) where the lugs are located. The third spring is elastically connected to the lugs, and the lugs are engaged with the second slot. When the stopper (875) is in contact with the inner wall of the side close to the connecting hole (872), the metering cylinder (874) is connected to the connecting hole (872). When one end of the baffle (873) is in contact with the inner wall of the end close to the second discharge pipe (877), the metering cylinder (874) is connected to the second discharge pipe (877). When the slip ring (84) rotates, one of the connecting holes overlaps with the discharge port (83), and at this time, the lugs are engaged with the second slot.

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