Discharging door of sand mixer for casting

Abstract

The invention relates to the technical field of intelligent casting, in particular to a sand mixer discharging door for casting, which comprises a sand mixer base, two sliding assemblies, a vertical driving assembly, a horizontal driving assembly, a rotating assembly and a sealing door assembly, when the sand mixer mixes sand, the sealing door assembly is in a completely closed state, the upper surface of the sealing door assembly is flush with the bottom plane of the sand mixer basin, and when the sand mixer basin operates, the sealing door assembly and the sand mixer basin rotate together; when the sand mixer unloads sand, the sealing door assembly needs to be opened, at the moment, the vertical driving assembly drives the sealing door assembly to descend, after the vertical driving assembly completely descends in place, the horizontal driving assembly drives the vertical driving assembly, the sealing door assembly and the rotating assembly to horizontally move along the sliding assembly to be away from a discharging opening of the sand mixer, and a discharging door is in a completely-opened state; the bearing strength of the unloading door of the sand mixer can be improved, the phenomenon that the unloading door deforms and gets stuck due to the fact that the unloading door bears heavily is avoided, and operation is more reliable.

Description

Technical Field

[0001] The present invention relates to the field of intelligent casting technology, and in particular to a discharge door of a sand mixer for casting. Background Art

[0002] Sand mixer is a kind of sand processing equipment widely used in foundry industry. The purpose of sand mixer is to evenly mix raw sand, binder, auxiliary materials, water, etc. for casting to make them into molding sand or core sand with certain properties. After the materials are mixed, they need to be unloaded.

[0003] At present, the unloading method of the sand mixer is usually the center rotary bottom unloading method. However, in this method, the center rotary bottom unloading unloading door has too much load on the unloading door and the supporting strength at the rotation center is insufficient. When unloading, it is very easy to cause deformation and jamming due to the unbalanced load of the unloading door, and the maintenance failure rate is very high. Summary of the invention

[0004] The object of the present invention is to provide a discharge door of a sand mixer for casting, which can improve the bearing strength of the discharge door of the sand mixer and avoid deformation and jamming caused by unbalanced load of the discharge door.

[0005] To achieve the above-mentioned object, the present invention provides a sand mixer discharge door for casting, comprising a sand mixer base, two sliding assemblies, a vertical drive assembly, a horizontal drive assembly, a rotating assembly and a sealing door assembly;

[0006] The two sliding assemblies are mirror-imaged on both sides of the sand mixer base, the vertical drive assembly is arranged between the two sliding assemblies, the horizontal drive assembly is arranged between the vertical drive assembly and the sand mixer base, the rotating assembly is arranged on the top of the vertical drive assembly, and the sealing door assembly is arranged on the top of the rotating assembly.

[0007] As a preferred technical solution, the sliding assembly includes a support beam, a guide rail support, a linear guide rail, a linear slider and a linear slider seat; the support beam is fixedly connected to the sand mixer base and is located on the side of the sand mixer base; the guide rail support is fixedly connected to the support beam and is located on the top of the support beam; the linear guide rail is fixedly connected to the guide rail support and is located on the top of the guide rail support; the linear slider is slidably connected to the linear guide and is located on the top of the linear guide; the linear slider seat is fixedly connected to the linear slider and is located on the top of the linear slider.

[0008] As a preferred technical solution, the vertical drive assembly includes a lower box, a cylinder lower support, a lifting cylinder, a cylinder upper support, a center seat and a wear-resistant copper sleeve; the lower box is fixedly connected to the two linear slider seats, respectively, and is located between the two linear slider seats; the cylinder lower support is fixedly connected to the lower box and is located at the bottom of the lower box; the lifting cylinder is fixedly connected to the cylinder lower support and is located at the top of the cylinder lower support; the cylinder upper support is fixedly connected to the piston rod of the lifting cylinder and is located at the top of the lifting cylinder; the center seat is fixedly connected to the lower box and is located at the top of the lower box; the wear-resistant copper sleeve is fixedly connected to the center seat and is located on the inner side of the center seat.

[0009] As a preferred technical solution, the vertical drive assembly also includes a dust ring pressure plate, a first bolt and a dust ring; the dust ring pressure plate is located on the top of the center seat; the first bolt is threadedly connected to the center seat, and is threadedly connected to the dust ring pressure plate, and is located on the side of the dust ring pressure plate; the dust ring is located between the dust ring pressure plate and the rotating assembly.

[0010] As a preferred technical solution, the vertical drive assembly further includes a movable sand retaining plate; the movable sand retaining plate is fixedly connected to the lower box body and is located at a side of the lower box body.

[0011] As a preferred technical solution, the horizontal drive assembly includes a cylinder fixing seat 1, a push-pull cylinder and a cylinder fixing seat 2; the cylinder fixing seat 1 is fixedly connected to the sand mixer base and is located on the side of the sand mixer base; the push-pull cylinder is fixedly connected to the cylinder fixing seat 1 and is located on one side of the cylinder fixing seat; the cylinder fixing seat 2 is fixedly connected to the piston rod of the push-pull cylinder, and is fixedly connected to the lower box body, and is located between the push-pull cylinder and the lower box body.

[0012] As a preferred technical solution, the horizontal drive assembly further includes a telescopic sleeve; the telescopic sleeve is fixedly connected to the push-pull cylinder and is located on the side of the push-pull cylinder.

[0013] As a preferred technical solution, the rotating assembly includes a wear-resistant sleeve, a stop plate, an oil seal end cover, a slewing bearing, a bearing pressure plate and a central slewing shaft; the wear-resistant sleeve is slidably connected to the wear-resistant copper sleeve, and is fixedly connected to the upper support of the oil cylinder and is located on the inner side of the wear-resistant copper sleeve; the stop plate is fixedly connected to the wear-resistant sleeve and is located at the bottom of the wear-resistant sleeve; the oil seal end cover is fixedly connected to the wear-resistant sleeve and is located at the top of the wear-resistant sleeve; the slewing bearing is arranged on the inner side of the wear-resistant sleeve, and the outer ring of the slewing bearing is pressed by the oil seal end cover; the bearing pressure plate and the central slewing shaft are fixedly connected by bolts, and the bearing pressure plate is located at the bottom of the slewing bearing and presses the inner ring of the slewing bearing; the central slewing shaft and the bearing pressure plate are fixedly connected and are located on the inner side of the slewing bearing.

[0014] As a preferred technical solution, the sealed door assembly includes a door body and a stainless steel disc; the door body is fixedly connected to the central rotating shaft and is located at the top of the central rotating shaft; the stainless steel disc is fixedly connected to the door body and is located at the top of the door body.

[0015] As a preferred technical solution, the sealing door assembly also includes a sealing ring pressure plate, a second bolt and a sealing ring; the sealing ring pressure plate is located at the bottom of the door body; the second bolt is threadedly connected to the door body, and is threadedly connected to the sealing ring pressure plate, and is located on the side of the sealing ring pressure plate; the sealing ring is located between the door body and the sealing ring pressure plate.

[0016] Compared with the prior art, the invention has the following beneficial effects: when the sand mixer is mixing sand, the sealing door assembly is in a completely closed state, the upper surface of the sealing door assembly is flush with the bottom plane of the sand mixer basin, and when the sand mixer basin is in operation, the sealing door assembly rotates together with the sand mixer basin. When the sand mixer is unloading sand, the sealing door assembly needs to be opened, and at this time, the vertical drive assembly drives the sealing door assembly to descend. After the vertical drive assembly is completely dropped into place, the horizontal drive assembly drives the vertical drive assembly, the sealing door assembly and the rotating assembly to move horizontally away from the sand mixer discharge port along the sliding assembly, and the discharge door is in a completely open state. After the sand mixer has unloaded sand, the sealing door assembly needs to be closed and enter the mixing of the next plate of sand. At this time, the horizontal drive assembly is first activated. Under the action of the horizontal drive assembly, the vertical drive assembly, the sealing door assembly and the rotating assembly are pushed to the bottom of the sand mixer discharge port along the sliding assembly, and then the vertical drive assembly starts to work, so that the sealing door assembly and the rotating assembly move up to the state where the discharge door is completely closed, and then enter the next working cycle. The present invention can improve the bearing strength of the discharge door of the sand mixer, avoid deformation and jamming caused by unbalanced bearing of the discharge door, and make the operation more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is a side view of the present invention in a closed state.

[0019] Figure 3 yes Figure 2 Section view along AA.

[0020] Figure 4 yes Figure 3 A partial enlargement of detail A.

[0021] Figure 5 yes Figure 4 A partial enlargement of detail B.

[0022] Figure 6 yes Figure 4 A partial enlargement of detail C.

[0023] Figure 7 yes Figure 4 A partial enlargement of detail D.

[0024] Figure 8 It is a top view of the present invention in a closed state.

[0025] Fig. 9 It is a side view of the lifting oil cylinder piston rod of the present invention when it is fully retracted and the push-pull oil cylinder piston rod is fully pushed out.

[0026] Fig.10 yes Fig. 9 Section view along BB.

[0027] Fig.11 It is a side view of the present invention in an open door state.

[0028] Fig.12 It is a top view of the present invention in a closed state.

[0029] Fig.13 It is a side view of the lifting oil cylinder piston rod of the present invention when it is fully retracted and the push-pull oil cylinder piston rod is fully pushed out.

[0030] The meaning of each number in the figure is:

[0031] 1-sand mixer base, 2-sliding assembly, 3-vertical drive assembly, 4-horizontal drive assembly, 5-rotating assembly, 6-sealed door assembly, 7-sand mixer basin, 8-slewing bearing, 9-discharging port, 10-metal sensor inductive proximity switch 1, 11-metal sensor inductive proximity switch 2, 21-support beam, 22-guide rail support, 23-linear guide rail, 24-linear slider, 25-linear slider seat, 26-dustproof room, 31-lower box, 32-lower support of oil cylinder, 33-lifting oil cylinder, 34-oil Cylinder upper support, 35-center seat, 36-wear-resistant copper sleeve, 37-dust ring pressure plate, 38-first bolt, 39-dust ring, 41-cylinder fixing seat one, 42-push-pull cylinder, 43-cylinder fixing seat two, 44-telescopic sleeve, 51-wear-resistant sleeve, 52-stop plate, 53-oil seal end cover, 54-slewing bearing, 55-bearing pressure plate, 56-center slewing shaft, 61-door body, 62-stainless steel disc, 63-sealing ring pressure plate, 64-second bolt, 65-sealing ring, 310-movable sand retaining plate. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figure 1-Figure 13 , this embodiment provides a casting sand mixer discharge door, comprising a sand mixer base 1, two sliding components 2, a vertical drive component 3, a horizontal drive component 4, a rotating component 5 and a sealing door component 6;

[0034] The two sliding components 2 are mirror-imaged on both sides of the sand mixer base 1, the vertical drive component 3 is disposed between the two sliding components 2, the horizontal drive component 4 is disposed between the vertical drive component 3 and the sand mixer base 1, the rotating component 5 is disposed on the top of the vertical drive component 3, and the sealing door component 6 is disposed on the top of the rotating component 5. A slewing bearing 8 is installed at the bottom of the sand mixer basin 7, and the slewing bearing 8 connects the sand mixer base 1 and the sand mixer basin 7. When the sand mixer is mixing sand, the sand mixer basin 7 is driven by the slewing reducer to rotate around the center of the slewing bearing 8. Figure 8 The direction of operation of the sand mixer basin 7 shown by the arrow drives the sand to rotate continuously, and the position of the sand mixer discharge port 9 is located at the center of the central slewing bearing 8 at the bottom of the sand mixer basin 7 (as shown in the attached figure). Figure 8 When the sand mixer is mixing sand, the sealing door assembly 6 is in a completely closed state (as shown in the attached figure). Figure 2 and Figure 3 As shown), the sealing door assembly 6 is located near Figure 8 In the left position shown in the figure, the upper surface of the sealing door assembly 6 is flush with the bottom plane of the sand mixer basin 7. When the sand mixer basin 7 is in operation, the sealing door assembly 6 rotates together with the sand mixer basin 7 (the rotation center of the sealing door assembly 6 is the same as the rotation center of the sand mixer basin 7). When the sand mixer is unloading sand, the sealing door assembly 6 needs to be opened. At this time, the vertical drive assembly 3 drives the sealing door assembly 6 to descend to the adjacent Fig.10 After the vertical drive assembly 3 is completely dropped into place, the horizontal drive assembly 4 starts to move, and the vertical drive assembly 3, the sealing door assembly 6 and the rotating assembly 5 move along the sliding assembly 2 to the adjacent Fig.11 , Attachment Fig.12 The state and position shown, at this time, the sealing door assembly 6 is located near Fig.12 As shown in the figure, the discharge door is fully opened. After the sand mixer has finished unloading the sand, the sealing door assembly 6 needs to be closed and the next batch of sand mixing begins. At this time, the horizontal drive assembly 4 is first activated. Under the action of the horizontal drive assembly 4, the vertical drive assembly 3, the sealing door assembly 6 and the rotating assembly 5 are pushed to the adjacent position along the sliding assembly 2. Figure 8 The state and position shown in the figure, then the vertical drive assembly 3 starts to work, so that the sealing door assembly 6 and the rotating assembly 5 are pushed to the adjacent Figure 3 In the state and position shown, the discharge door is in a completely closed state, and then enters the next working cycle, when the rotating assembly 5 realizes the closing of the sand discharge door (i.e., when the sand mixer is mixing sand), the door body 61 can rotate freely with the sand mixer basin 7. The present invention can improve the bearing strength of the sand mixer discharge door, avoid deformation and jamming caused by unbalanced load of the discharge door, and make the operation more reliable.

[0035] In this embodiment, the sliding assembly 2 includes a support beam 21, a guide rail support 22, a linear guide rail 23, a linear slider 24 and a linear slider seat 25; the support beam 21 is fixedly connected to the sand mixer base 1 and is located at the side of the sand mixer base 1; the guide rail support 22 is fixedly connected to the support beam 21 and is located at the top of the support beam 21; the linear guide rail 23 is fixedly connected to the guide rail support 22 and is located at the top of the guide rail support 22; the linear slider 24 is slidably connected to the linear guide rail 23 and is located at the top of the linear guide rail 23; the linear slider seat 25 is fixedly connected to the linear slider 24 and is located at the top of the linear slider 24. The sliding assembly 2 also includes a dustproof chamber 26, which is fixedly connected to the support beam 21 and is located at the outer periphery of the support beam 21. The support beam 21 and the guide rail support 22 support the linear guide rail 23, and the linear guide rail 23 provides guidance for the linear slider 24 and the linear slider seat 25, so that the vertical drive assembly 3, the horizontal drive assembly 4 and the sealing door assembly 6 can move horizontally smoothly. Dustproof seal seats and dustproof seals are installed at both ends of the linear slider seat 25 for dust prevention; the dustproof chamber 26 is used to prevent the sand splashed during the unloading of the sand mixer from contaminating the linear guide rail 23.

[0036] In this embodiment, the vertical drive assembly 3 includes a lower box body 31, a lower cylinder support 32, a lifting cylinder 33, an upper cylinder support 34, a center seat 35 and a wear-resistant copper sleeve 36; the lower box body 31 is fixedly connected to the two linear slider seats 25 respectively and is located between the two linear slider seats 25; the lower cylinder support 32 is fixedly connected to the lower box body 31 and is located at the bottom of the lower box body 31; the lifting cylinder 33 is fixedly connected to the lower cylinder support 32 and is located at the top of the lower cylinder support 32; the upper cylinder support 34 is fixedly connected to the piston rod of the lifting cylinder 33 and is located at the top of the lifting cylinder 33; the center seat 35 is fixedly connected to the lower box body 31 and is located at the top of the lower box body 31; the wear-resistant copper sleeve 36 is fixedly connected to the center seat 35 and is located on the inner side of the center seat 35. An inspection door is provided on one side of the lower box body 31 to facilitate the disassembly, assembly and inspection of the lifting cylinder 33, the cylinder upper support 34 and other components inside the lower box body 31; by controlling the piston rod of the lifting cylinder 33 to extend or retract, the rotating assembly 5 and the sealing door assembly 6 can be driven to move up and down, and the center seat 35 and the wear-resistant copper sleeve 36 provide guidance for the rotating assembly 5.

[0037] In this embodiment, the vertical drive assembly 3 further includes a dust ring pressing plate 37, a first bolt 38 and a dust ring 39; the dust ring pressing plate 37 is located at the top of the center seat 35; the first bolt 38 is threadedly connected to the center seat 35, and is threadedly connected to the dust ring pressing plate 37, and is located at the side of the dust ring pressing plate 37; the dust ring 39 is located between the dust ring pressing plate 37 and the rotating assembly 5. The dust ring 39 is installed around the rotating assembly 5 by the dust ring pressing plate 37 through the first bolt 38, and the dust ring 39 prevents dust from entering between the wear-resistant copper sleeve 36 and the rotating assembly 5.

[0038] In this embodiment, the vertical drive assembly 3 further includes a movable sand guard plate 310; the movable sand guard plate 310 is fixedly connected to the lower box body 31 and is located at the side of the lower box body 31. The movable sand guard plate 310 is used to block sand.

[0039] In this embodiment, the horizontal drive assembly 4 includes a cylinder fixing seat 1 41, a push-pull cylinder 42 and a cylinder fixing seat 2 43; the cylinder fixing seat 1 41 is fixedly connected to the sand mixer base 1 and is located at the side of the sand mixer base 1; the push-pull cylinder 42 is fixedly connected to the cylinder fixing seat 1 41 and is located at the side of the cylinder fixing seat 1 41; the cylinder fixing seat 2 43 is fixedly connected to the piston rod of the push-pull cylinder 42, and is fixedly connected to the lower box 31, and is located between the push-pull cylinder 42 and the lower box 31. The push-pull cylinder 42 can drive the lower box 31 to move horizontally, so that the rotating assembly 5 and the sealing door assembly 6 can move horizontally.

[0040] In this embodiment, the horizontal drive assembly 4 further includes a telescopic sheath 44; the telescopic sheath 44 is fixedly connected to the push-pull oil cylinder 42 and is located at the side of the push-pull oil cylinder 42. The telescopic sheath 44 can extend or compress along with the piston rod of the push-pull oil cylinder 42, and can protect the piston rod of the push-pull oil cylinder 42 from external pollution and damage such as dust.

[0041] In this embodiment, the rotating assembly 5 includes a wear-resistant sleeve 51, a rotation stop plate 52, an oil seal end cover 53, a slewing bearing 54, a bearing pressure plate 55 and a central slewing shaft 56; the wear-resistant sleeve 51 is slidably connected to the wear-resistant copper sleeve 36, and is fixedly connected to the cylinder upper support 34 and is located on the inner side of the wear-resistant copper sleeve 36; the rotation stop plate 52 is fixedly connected to the wear-resistant sleeve 51 and is located at the bottom of the wear-resistant sleeve 51; the oil seal end cover 53 and the wear-resistant sleeve 51 are fixedly connected. The slewing bearing 54 is fixedly connected and located at the top of the wear-resistant sleeve 51; the slewing bearing 54 is arranged on the inner side of the wear-resistant sleeve 51, and the outer ring of the slewing bearing 54 is pressed by the oil seal end cover 53; the bearing pressure plate 55 and the central slewing shaft 56 are fixedly connected by bolts, and the bearing pressure plate 55 is located at the bottom of the slewing bearing 54 and presses the inner ring of the slewing bearing 54; the central slewing shaft 56 and the bearing pressure plate 55 are fixedly connected and located on the inner side of the slewing bearing 54. The slewing bearing 54 is assembled on the inner side of the wear-resistant sleeve 51 and is compressed by the oil seal end cover 53 and the bearing pressure plate 55; the wear-resistant copper sleeve 36 and the center seat 35 are both provided with lubricating oil ports and lubricating oil circuits; the inner hole of the slewing bearing 54 is used to fix the central slewing shaft 56 and the sealing door assembly 6 through the bearing pressure plate 55, so that when the discharge door is closed (i.e. when the sand mixer is mixing sand), the sealing door assembly 6 can rotate freely with the sand mixer basin 7; the lower end of the wear-resistant sleeve 51 is provided with the anti-rotation plate 52 to prevent the wear-resistant sleeve 51 and the lifting cylinder 33 from rotating together with the sealing door assembly 6 when the sand mixer is mixing sand.

[0042] In this embodiment, the sealing door assembly 6 includes a door body 61 and a stainless steel disc 62; the door body 61 is fixedly connected to the central rotating shaft 56 and is located at the top of the central rotating shaft 56; the stainless steel disc 62 is fixedly connected to the door body 61 and is located at the top of the door body 61. The door body 61 and the stainless steel disc 62 are used to seal the central discharge port 9 at the bottom of the sand mixer basin 7, and the stainless steel disc 62 is used to prevent the door body 61 from sticking sand, thereby improving the wear resistance and service life of the door body 61.

[0043] In this embodiment, the sealing door assembly 6 further includes a sealing ring pressing plate 63, a second bolt 64 and a sealing ring 65; the sealing ring pressing plate 63 is located at the bottom of the door body 61; the second bolt 64 is threadedly connected to the door body 61, and is threadedly connected to the sealing ring pressing plate 63, and is located at the side of the sealing ring pressing plate 63; the sealing ring 65 is located between the door body 61 and the sealing ring pressing plate 63. The sealing ring 65 is fixed to the circumferential bottom of the door body 61 by the sealing ring pressing plate 63 through the second bolt 64, and the periphery is aligned with the door body 61. When the door body 61 is closed, the sealing ring 65 is used to seal the door body 61 and the central discharge port 9 at the bottom of the sand mixer basin 7 to prevent sand leakage around the door body 61 when the sand mixer is mixing sand.

[0044] In this embodiment, the unloading door of the casting sand mixer also includes two metal sensing inductive proximity switches 10 and two metal sensing inductive proximity switches 11. The two metal sensing inductive proximity switches 10 are respectively fixedly connected to the lifting cylinder 33 and are respectively located on the sides of the lifting cylinder 33; the two metal sensing inductive proximity switches 11 are respectively fixedly connected to the push-pull cylinder 42 and are respectively located on the sides of the push-pull cylinder 42.

[0045] When using the unloading door of a casting sand mixer of the present invention, the door body 61 is in a completely closed state (such as the attached Figure 2 and Figure 3 As shown), at this time, the piston rod of the lifting cylinder 33 and the piston rod of the push-pull cylinder 42 are fully pushed out, and the door body 61 is located near Figure 8 In the left position shown in the figure, the upper surface of the door body 61 is flush with the bottom plane of the sand mixer basin 7. When the sand mixer basin 7 is running, the door body 61 rotates together with the sand mixer basin 7 (the rotation center of the door body 61 is the same as the rotation center of the sand mixer basin 7).

[0046] When the sand mixer is unloading sand, the door body 61 is opened, at which time the piston rod of the lifting cylinder 33 falls first, and the door body 61 is lowered to the adjacent position under the action of the lifting cylinder 33. Fig.10 The state and position shown; after the piston rod of the lifting cylinder 33 is completely dropped into place, the metal sensing inductive proximity switch 10 will receive a signal and transmit it back to the controller. Under the control of the program, the push-pull cylinder 42 that receives the signal starts to move, and the door body 61 and the lower box body 31 are retracted to the adjacent along the linear guide rail 23 together with the piston rod of the push-pull cylinder 42. Fig.11 , Attachment Fig.12 The state and position shown, at this time the door body 61 is located near Fig.12 As shown in the figure on the right, the discharge door is fully open.

[0047] After the sand mixer has finished unloading the sand, the door body 61 needs to be closed and enter the next plate of sand mixing. At this time, the push-pull cylinder 42 is first activated, and the piston rod of the push-pull cylinder 42 is pushed out. Under the action of the push-pull cylinder 42, the door body 61 and the lower box body 31 are pushed to the adjacent position along the linear guide rail 23. Figure 8 In the state and position shown, after the piston rod of the push-pull cylinder 42 is fully pushed out, the metal sensor inductive proximity switch 11 receives a signal and transmits it back to the controller. Under the control of the program, the lifting cylinder 33 receives the signal and starts working. The piston rod of the lifting cylinder 33 is pushed out, and the door body 61 is pushed to the adjacent Figure 3 In the state and position shown, the discharge door is in a completely closed state, and then enters the next working cycle. The present invention enhances the bearing strength of the discharge door, avoids deformation and jamming caused by the unbalanced load of the discharge door, and makes the operation and precision of the discharge door more stable; the metal sensing inductive proximity switch 10 and the metal sensing inductive proximity switch 2 11 are used to control the sequential actions of the hydraulic cylinder, realizing the electric-hydraulic joint control, avoiding the phenomenon of jamming and damage of the discharge door caused by the discharge door entering the next action before the action of the discharge door is completed, making the control more accurate, the operation more reliable, and the service life of the discharge door longer.

[0048] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only preferred examples of the present invention, and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A casting sand mixer discharge door, characterized in that: It includes a sand mixer base, two sliding assemblies, a vertical drive assembly, a horizontal drive assembly, a rotating assembly and a sealing door assembly; The two sliding assemblies are mirror-imaged on both sides of the sand mixer base, the vertical drive assembly is arranged between the two sliding assemblies, the horizontal drive assembly is arranged between the vertical drive assembly and the sand mixer base, the rotating assembly is arranged on the top of the vertical drive assembly, and the sealing door assembly is arranged on the top of the rotating assembly.

2. A casting sand mixer discharge door as claimed in claim 1, characterized in that: The sliding assembly includes a support beam, a guide rail support, a linear guide rail, a linear slider and a linear slider seat; the support beam is fixedly connected to the sand mixer base and is located on the side of the sand mixer base; the guide rail support is fixedly connected to the support beam and is located on the top of the support beam; the linear guide rail is fixedly connected to the guide rail support and is located on the top of the guide rail support; the linear slider is slidably connected to the linear guide rail and is located on the top of the linear guide rail; the linear slider seat is fixedly connected to the linear slider and is located on the top of the linear slider.

3. A casting sand mixer discharge door as claimed in claim 2, characterized in that: The vertical drive assembly includes a lower box, a lower support of the oil cylinder, a lifting oil cylinder, an upper support of the oil cylinder, a center seat and a wear-resistant copper sleeve; the lower box is fixedly connected to the two linear slider seats respectively and is located between the two linear slider seats; the lower support of the oil cylinder is fixedly connected to the lower box and is located at the bottom of the lower box; the lifting oil cylinder is fixedly connected to the lower support of the oil cylinder and is located at the top of the lower support of the oil cylinder; The upper support of the oil cylinder is fixedly connected to the piston rod of the lifting cylinder and is located at the top of the lifting cylinder; the center seat is fixedly connected to the lower box body and is located at the top of the lower box body; the wear-resistant copper sleeve is fixedly connected to the center seat and is located on the inner side of the center seat.

4. A casting sand mixer discharge door as claimed in claim 3, characterized in that: The vertical drive assembly also includes a dust ring pressure plate, a first bolt and a dust ring; the dust ring pressure plate is located on the top of the center seat; the first bolt is threadedly connected to the center seat, and is threadedly connected to the dust ring pressure plate, and is located on the side of the dust ring pressure plate; the dust ring is located between the dust ring pressure plate and the rotating assembly.

5. A casting sand mixer discharge door as claimed in claim 4, characterized in that: The vertical drive assembly also includes a movable sand baffle; the movable sand baffle is fixedly connected to the lower box body and is located at the side of the lower box body.

6. A casting sand mixer discharge door as claimed in claim 5, characterized in that: The horizontal driving assembly includes a first cylinder fixing seat, a push-pull cylinder and a second cylinder fixing seat; the first cylinder fixing seat is fixedly connected to the sand mixer base and is located on the side of the sand mixer base; the push-pull cylinder is fixedly connected to the first cylinder fixing seat and is located on one side of the cylinder fixing seat; the second cylinder fixing seat is fixedly connected to the piston rod of the push-pull cylinder, and is fixedly connected to the lower box body, and is located between the push-pull cylinder and the lower box body.

7. A casting sand mixer discharge door as claimed in claim 6, characterized in that: The horizontal drive assembly also includes a telescopic sleeve; the telescopic sleeve is fixedly connected to the push-pull cylinder and is located on the side of the push-pull cylinder.

8. A casting sand mixer discharge door as claimed in claim 7, characterized in that: The rotating assembly includes a wear-resistant sleeve, a stop plate, an oil seal end cover, a slewing bearing, a bearing pressure plate and a central slewing shaft; the wear-resistant sleeve is slidably connected to the wear-resistant copper sleeve, and is fixedly connected to the upper support of the oil cylinder and is located on the inner side of the wear-resistant copper sleeve; the stop plate is fixedly connected to the wear-resistant sleeve and is located at the bottom of the wear-resistant sleeve; the oil seal end cover is fixedly connected to the wear-resistant sleeve and is located at the top of the wear-resistant sleeve; the slewing bearing is arranged on the inner side of the wear-resistant sleeve, and the outer ring of the slewing bearing is pressed by the oil seal end cover; the bearing pressure plate and the central slewing shaft are fixedly connected by bolts, and the bearing pressure plate is located at the bottom of the slewing bearing and presses the inner ring of the slewing bearing; the central slewing shaft and the bearing pressure plate are fixedly connected and are located on the inner side of the slewing bearing.

9. A casting sand mixer discharge door as claimed in claim 8, characterized in that: The sealed door assembly includes a door body and a stainless steel disc; the door body is fixedly connected to the central rotating shaft and is located on the top of the central rotating shaft; the stainless steel disc is fixedly connected to the door body and is located on the top of the door body.

10. A casting sand mixer discharge door as claimed in claim 9, characterized in that: The sealing door assembly also includes a sealing ring pressure plate, a second bolt and a sealing ring; the sealing ring pressure plate is located at the bottom of the door body; the second bolt is threadedly connected to the door body and to the sealing ring pressure plate, and is located on the side of the sealing ring pressure plate; the sealing ring is located between the door body and the sealing ring pressure plate.

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