A white mold drying device for lost foam

Abstract

The invention discloses a white mold drying device for lost foam, comprising a drying tunnel, an air inlet pipe, a conveying track and a conveying trolley; the conveying track is arranged in the drying tunnel, the white mold is placed on the conveying trolley, and the conveying trolley moves in the drying tunnel along the conveying track; the drying tunnel comprises an inner wall and an outer wall, an air guide cavity is formed between the inner wall and the outer wall, the air inlet pipe is connected to one side of the outlet end of the drying tunnel and communicated with the air guide cavity, and a plurality of groups of air outlet units are formed on the inner wall of the drying tunnel and are distributed at intervals along the length direction of the drying tunnel; in this way, the undried white mold enters from the inlet end of the drying tunnel and leaves from the outlet end of the drying tunnel, new white molds to be dried continuously enter the drying tunnel, and dried white molds continuously leave the drying tunnel, and the whole drying process is continuous and efficient.

Description

Technical Field

[0001] The invention relates to the field of lost foam, in particular to a white mold drying device for lost foam. Background Art

[0002] At present, lost foam casting is known as green and environmentally friendly casting and is recognized by more and more foundries. The commonly used drying method of white mold consumes a lot of energy, and the drying is not thorough and uniform, and it cannot be dried in all directions, resulting in uneven heating during the drying process, which affects the accuracy of the finished product.

[0003] Chinese patent CN106734946B discloses a lost foam drying device, in which hot dry air enters the blowing device from the side of the chassis, which is inefficient. Moreover, the white molds in the drying room are stacked layer by layer, and the hot dry air cannot dry the white molds evenly, which affects the drying effect. Drying cannot be performed when placing and taking out the white molds, and the use efficiency of the drying device is low.

[0004] In view of this, the applicant conducted in-depth research on the above-mentioned defects in the prior art, which resulted in the present case. Summary of the invention

[0005] The main purpose of the present invention is to provide a white mold drying device for lost foam, which has the characteristic of efficiently drying the white mold.

[0006] In order to achieve the above object, the solution of the present invention is:

[0007] A white mold drying device for lost foam, comprising a drying tunnel, an air inlet pipe, a conveying track and a conveying trolley; the conveying track is arranged in the drying tunnel, the white mold is placed on the conveying trolley, and the conveying trolley moves in the drying tunnel along the conveying track; the drying tunnel comprises an inner wall and an outer wall, an air guide cavity is formed between the inner wall and the outer wall, the air inlet pipe is connected to one side of the outlet end of the drying tunnel and communicates with the air guide cavity, and a plurality of groups of air outlet units are formed on the inner wall of the drying tunnel and are spaced apart along the length direction of the drying tunnel.

[0008] Furthermore, a plurality of guide plates corresponding to the plurality of groups of air outlet units are formed in the air guide cavity, one end of the guide plate is connected to the outer wall, and the end of the guide plate away from the outer wall is inclined toward the inlet direction of the drying tunnel, and the guide area of ​​the guide plate gradually increases from the outlet end to the inlet end of the drying tunnel.

[0009] Furthermore, each group of the air outlet units includes a plurality of air outlet holes distributed along the circumference of the drying tunnel.

[0010] Furthermore, the conveying track is connected to each other at both ends, and the conveying trolley moves along the conveying track from the entrance end to the exit end of the drying tunnel in the drying tunnel, and the conveying trolley moves along the conveying track from the exit end to the entrance end of the drying tunnel outside the drying tunnel.

[0011] Furthermore, the conveying trolley includes a white mold placing device for placing the white mold, which is detachably connected to the trolley body.

[0012] Furthermore, the trolley body includes a frame, wheels, a fixed seat, and a rotating shaft; the white mold placement device is a cylindrical placement cage, and a sleeve is fixedly connected to the axis of the placement cage; the fixed seat is fixedly connected to the frame, and the rotating shaft is rotatably connected to the fixed seat; the sleeve of the placement cage is detachably fixedly connected to the rotating shaft;

[0013] A rack is arranged in the drying tunnel along the movement direction of the trolley body, the frame is formed with a cylindrical gear meshing with the rack and rotating with the movement of the trolley, and a transmission device is arranged on the trolley body to transmit the rotation of the cylindrical gear to the rotating shaft.

[0014] Further, the transmission device includes a first bevel gear, a second bevel gear, a first pulley and a second pulley; the first bevel gear and the cylindrical gear are coaxially fixedly connected; the second bevel gear and the first pulley are coaxially fixedly arranged and rotatably connected to the frame, the second pulley is fixedly connected to the rotating shaft, a transmission belt is wound around the first pulley and the second pulley, and the first bevel gear and the second bevel gear are meshed with each other.

[0015] Furthermore, the placement cage includes a cage body, a cage cover and a fixing nut, the sleeve is fixedly connected to the cage body, a partition plate is formed in the cage body, the partition plate divides the inner cavity of the cage body into a plurality of placement spaces, a through hole is formed in the center of the cage cover, the cage cover is sleeved on the rotating shaft through the through hole, the fixing nut is threadedly connected to the rotating shaft and presses the cage cover against the cage body, and the cage cover covers all the placement spaces.

[0016] Furthermore, a pushing device for pushing the conveying trolley into the drying tunnel is provided at the entrance end of the drying tunnel.

[0017] Furthermore, the pushing device includes a hydraulic cylinder, a rotating bracket and a rotating handle, the hydraulic cylinder and the rotating bracket are fixedly connected; the rotating bracket is hinged on a fixed bracket outside the conveying track, and the rotating handle is fixedly connected to the rotating bracket; the rotating bracket has a pushing position and a storage position, when the rotating bracket is in the pushing position, the piston rod of the hydraulic cylinder abuts against the conveying trolley; when the rotating bracket is in the storage position, the hydraulic cylinder and the rotating bracket are located outside the conveying track.

[0018] After adopting the above structure, the white mold drying device for lost foam according to the present invention has at least the following beneficial effects:

[0019] 1. The white mold is placed on the conveying trolley, and the conveying trolley moves from the entrance end of the drying tunnel along the track to the exit end; the dry hot air enters the air guide cavity from the exit end of the drying tunnel through the air inlet pipe, and is discharged through the air outlet unit on the inner wall of the drying tunnel. In this way, the undried white mold enters from the entrance end of the drying tunnel and leaves from the exit end of the drying tunnel. New white molds to be dried continuously enter the drying tunnel, and dried white molds continuously leave the drying tunnel. The entire drying process is continuous and efficient.

[0020] Second, by setting the guide plate, the air outlet volume of the air outlet units at different positions is made more uniform, avoiding excessive air outlet volume of the air outlet units close to the air inlet pipe and almost no air outlet of the air outlet units far from the air inlet pipe, thereby ensuring the drying effect.

[0021] 3. The conveying track is connected end to end, so that when the conveying trolley moves out of the drying tunnel, workers can easily remove the dried white molds and place the white molds that need to be dried, which makes the operation more convenient and safer.

[0022] Fourth, the white mold placing device is detachably connected. When the drying is completed, the white mold placing device can be removed from the rotating shaft, and the white mold can be placed and removed from the white mold placing device separately. This improves the utilization rate of the trolley body and is also convenient for workers to place the white mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The invention relates to a schematic diagram of the overall structure of a white mold drying device for lost foam.

[0024] Figures 2 to 3 This is a schematic diagram of the finishing structure from another angle of the present invention.

[0025] Figure 4 This is a schematic diagram of the structure of the drying tunnel.

[0026] Figure 5 This is a schematic diagram of the cross-sectional structure of the drying tunnel.

[0027] Figure 6 This is a schematic diagram of the internal three-dimensional structure of the drying tunnel.

[0028] Figure 7 This is a schematic diagram of the exploded structure of the conveyor trolley.

[0029] Figure 8 It is a schematic diagram of the three-dimensional structure of the conveying trolley.

[0030] Fig. 9 This is a schematic diagram of the rear structure of the transport trolley.

[0031] Fig.10 This is a schematic diagram of the internal structure of the drying tunnel from the rear.

[0032] Fig.11 for Figure 3 Enlarged structural diagram at A in the middle.

[0033] In the figure:

[0034] Drying tunnel 1; air inlet pipe 11; conveying track 12; inner wall 13; outer wall 14; air guide cavity 15; guide plate 151; air outlet 16; pushing device 17; hydraulic cylinder 171; rotating bracket 172; rotating handle 173; rack 18; fixed bracket 19;

[0035] Transport trolley 2; frame 21; wheels 22; fixed seat 23; rotating shaft 24;

[0036] Placement cage 25; sleeve 251; cage body 252; cage cover 253; partition plate 254; fixing nut 255; cylindrical gear 26;

[0037] A first bevel gear 271 ; a second bevel gear 272 ; a first pulley 273 ; a second pulley 274 ; and a transmission belt 275 . DETAILED DESCRIPTION

[0038] In order to further explain the technical solution of the present invention, the present invention is described in detail below through specific embodiments.

[0039] like Figures 1 to 11As shown, it is a white mold drying device for lost foam according to the present invention, comprising a drying tunnel 1, an air inlet pipe 11, a conveying track 12 and a conveying trolley 2; the conveying track 12 is arranged in the drying tunnel 1, and the white mold (not shown in the figure) is placed on the conveying trolley 2, and the conveying trolley 2 moves in the drying tunnel 1 along the conveying track 12; the drying tunnel 1 comprises an inner wall 13 and an outer wall 14, an air guide cavity 15 is formed between the inner wall 13 and the outer wall 14, the air inlet pipe 11 is connected to one side of the outlet end of the drying tunnel 1 and communicated with the air guide cavity 15, and a plurality of groups of air outlet units are formed on the inner wall 13 of the drying tunnel 1 and are spaced apart along the length direction of the drying tunnel 1.

[0040] Thus, the present invention relates to a white mold drying device for lost foam, in which the white mold is placed on the conveying trolley 2, and the conveying trolley 2 moves from the entrance end of the drying tunnel 1 to the exit end along the track; the dry hot air enters the air guide cavity 15 from the exit end side of the drying tunnel 1 through the air inlet pipe 11, and is discharged through the air outlet unit on the inner wall 13 of the drying tunnel 1. In this way, the undried white mold enters from the entrance end of the drying tunnel 1 and leaves from the exit end of the drying tunnel 1, and new white molds to be dried continuously enter the drying tunnel 1, and dried white molds continuously leave the drying tunnel 1, and the entire drying process is continuous and efficient.

[0041] Furthermore, a plurality of guide plates 151 corresponding to a plurality of groups of the air outlet units are formed in the air guide cavity 15, one end of the guide plate 151 is connected to the outer wall 14, and the end of the guide plate 151 away from the outer wall 14 is inclined toward the inlet direction of the drying tunnel 1, and the guide area of ​​the guide plate 151 gradually increases from the outlet end to the inlet end of the drying tunnel 1. By providing the guide plate 151, the air outlet volume of the air outlet units at different positions is made more uniform, so that the air outlet volume of the air outlet units close to the air inlet pipe 11 is prevented from being too large, and the air outlet units far from the air inlet pipe 11 are prevented from having almost no air outlet, thereby ensuring the drying effect. Preferably, each group of the air outlet units includes a plurality of air outlet holes 16 distributed circumferentially along the drying tunnel 1. In this way, the white mold is dried from multiple angles.

[0042] Preferably, the conveying tracks 12 are connected end to end, and the conveying trolley 2 moves along the conveying tracks 12 from the entrance end to the exit end of the drying tunnel 1 in the drying tunnel 1, and the conveying trolley 2 moves along the conveying tracks 12 from the exit end to the entrance end of the drying tunnel 1 outside the drying tunnel 1. The conveying tracks 12 are connected end to end, so that when the conveying trolley 2 moves outside the drying tunnel 1, workers can easily remove the dried white molds and place the white molds that need to be dried, which is more convenient and safer to operate.

[0043] Preferably, the transport trolley 2 includes a white mold placing device for placing white molds, which is detachably connected to the trolley body. The white mold placing device is detachably connected. When drying is completed, the white mold placing device can be removed from the rotating shaft 24, and the white mold can be placed and removed from the white mold placing device separately, thereby improving the utilization rate of the trolley body and facilitating the workers to place the white molds.

[0044] Preferably, the trolley body includes a frame 21, wheels 22, a fixed seat 23, and a rotating shaft 24; the white mold placing device is a cylindrical placing cage 25, and a sleeve 251 is fixedly connected to the axis of the placing cage 25; the fixed seat 23 is fixedly connected to the frame 21, and the rotating shaft 24 is rotatably connected to the fixed seat 23; the sleeve 251 of the placing cage 25 is detachably fixedly connected to the rotating shaft 24;

[0045] The drying tunnel 1 is provided with a rack 18 arranged along the moving direction of the trolley body, the frame 21 is formed with a cylindrical gear 26 meshing with the rack 18 and rotating with the movement of the trolley, and the trolley body is provided with a transmission device for transmitting the rotation of the cylindrical gear 26 to the rotating shaft 24. The trolley body moves along the conveying track 12, and the cylindrical gear 26 rotates due to meshing with the rack 18, and then drives the rotating shaft 24 to rotate through the transmission device, so that the placement cage 25 rotates when the trolley body moves from the entrance end to the exit end of the drying tunnel 1. In this way, the white mold can be dried more evenly by the dry hot air.

[0046] Preferably, the transmission device comprises a first bevel gear 271, a second bevel gear 272, a first pulley 273 and a second pulley 274; the first bevel gear 271 and the cylindrical gear 26 are coaxially fixedly connected; the second bevel gear 272 and the first pulley 273 are coaxially fixedly arranged and rotatably connected to the frame 21, the second pulley 274 is fixedly connected to the rotating shaft 24, a transmission belt 275 is wound around the first pulley 273 and the second pulley 274, and the first bevel gear 271 and the second bevel gear 272 are meshed with each other. Through the transmission of the first bevel gear 271 and the second bevel gear 272 and the first pulley 273 and the second pulley 274, the rotation of the cylindrical gear 26 drives the rotation of the rotating shaft 24, thereby realizing the rotation of the placement cage 25.

[0047] Preferably, the placement cage 25 comprises a cage body 252, a cage cover 253 and a fixing nut 255, the sleeve 251 is fixedly connected to the cage body 252, a partition plate 254 is formed in the cage body 252, the partition plate 254 divides the inner cavity of the cage body 252 into a plurality of placement spaces, a through hole is formed in the center of the cage cover 253, the cage cover 253 is sleeved on the rotating shaft 24 through the through hole, the fixing nut 255 is threadedly connected to the rotating shaft 24 and the cage cover 253 is pressed against the cage body 252, and the cage cover 253 covers all the placement spaces. The white mold is placed in the placement space, and the cage cover 253 prevents the white mold from falling out of the placement space.

[0048] Preferably, the entrance end of the drying tunnel 1 is provided with a pushing device 17 for pushing the conveying trolley 2 into the drying tunnel 1. The pushing device 17 abuts against the conveying trolley 2, and the conveying trolleys 2 in the drying tunnel 1 abut against each other to achieve a push from front to back. The pushing device 17 retracts after the pushing is completed, and when a new conveying trolley 2 with a white mold to be dried is placed in place under the pushing of a worker, the pushing device 17 abuts against the new conveying trolley 2 to push it, thus achieving a circular push.

[0049] Preferably, the pushing device 17 includes a hydraulic cylinder 171, a rotating bracket 172 and a rotating handle 173, wherein the hydraulic cylinder 171 and the rotating bracket 172 are fixedly connected; the rotating bracket 172 is hinged on a fixed bracket 19 outside the conveying track 12, and the rotating handle 173 is fixedly connected to the rotating bracket 172; the rotating bracket 172 has a pushing position and a storage position, and when the rotating bracket 172 is in the pushing position, the piston rod of the hydraulic cylinder 171 abuts against the conveying trolley 2; when the rotating bracket 172 is in the storage position, the hydraulic cylinder 171 and the rotating bracket 172 are located outside the conveying track 12. In this way, the hydraulic cylinder 171 will not affect the movement of the conveying trolley 2 along the conveying track 12. When pushing is required, the hydraulic cylinder 171 can also be moved to the corresponding position through the rotating bracket 172.

[0050] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present invention.

Claims

1. A white mold drying device for lost foam, characterized in that: It includes a drying tunnel, an air intake pipe, a conveying track and a conveying trolley; the conveying track is arranged in the drying tunnel, the white mold is placed on the conveying trolley, and the conveying trolley moves in the drying tunnel along the conveying track; The drying tunnel comprises an inner wall and an outer wall, an air guide cavity is formed between the inner wall and the outer wall, the air inlet pipe is connected to one side of the outlet end of the drying tunnel and communicates with the air guide cavity, a plurality of groups of air outlet units are formed on the inner wall of the drying tunnel and are distributed at intervals along the length direction of the drying tunnel; a plurality of guide plates corresponding to the plurality of groups of air outlet units are formed in the air guide cavity, one end of the guide plate is connected to the outer wall, the end of the guide plate away from the outer wall is inclined toward the inlet direction of the drying tunnel, and the guide area of ​​the guide plate gradually increases from the outlet end to the inlet end of the drying tunnel; each group of the air outlet units comprises a plurality of air outlet holes distributed along the circumference of the drying tunnel; The conveying trolley includes a white mold placing device for placing white molds, which is detachably connected to the trolley body; the trolley body includes a frame, wheels, a fixed seat, and a rotating shaft; the white mold placing device is a cylindrical placing cage, and a sleeve is fixedly connected to the axis of the placing cage; the fixed seat is fixedly connected to the frame, and the rotating shaft is rotatably connected to the fixed seat; the sleeve of the placing cage is detachably fixedly connected to the rotating shaft; a rack arranged along the movement direction of the trolley body is arranged in the drying tunnel, the frame is formed with a cylindrical gear meshing with the rack and rotating with the movement of the trolley, and a transmission device is arranged on the trolley body to transmit the rotation of the cylindrical gear to the rotating shaft.

2. A white mold drying device for lost foam according to claim 1, characterized in that: The conveying tracks are connected end to end, the conveying trolley moves along the conveying tracks from the entrance end to the exit end of the drying tunnel in the drying tunnel, and the conveying trolley moves along the conveying tracks from the exit end to the entrance end of the drying tunnel outside the drying tunnel.

3. A white mold drying device for lost foam according to claim 1, characterized in that: The transmission device includes a first bevel gear, a second bevel gear, a first pulley and a second pulley; the first bevel gear and the cylindrical gear are coaxially fixedly connected; the second bevel gear and the first pulley are coaxially fixedly arranged and rotatably connected to the frame, the second pulley is fixedly connected to the rotating shaft, a transmission belt is wound around the first pulley and the second pulley, and the first bevel gear and the second bevel gear are meshed with each other.

4. A white mold drying device for lost foam as claimed in claim 1, characterized in that: The placement cage includes a cage body, a cage cover and a fixing nut, the sleeve is fixedly connected to the cage body, a partition plate is formed in the cage body, the partition plate divides the inner cavity of the cage body into a plurality of placement spaces, a through hole is formed in the center of the cage cover, the cage cover is sleeved on the rotating shaft through the through hole, the fixing nut is threadedly connected to the rotating shaft and presses the cage cover against the cage body, and the cage cover covers all the placement spaces.

5. The white mold drying device for lost foam according to claim 1, characterized in that: The entrance end of the drying tunnel is provided with a pushing device for pushing the conveying trolley into the drying tunnel.

6. A white mold drying device for lost foam as claimed in claim 5, characterized in that: The pushing device includes a hydraulic cylinder, a rotating bracket and a rotating handle, the hydraulic cylinder and the rotating bracket are fixedly connected; the rotating bracket is hinged on a fixed bracket outside the conveying track, and the rotating handle is fixedly connected to the rotating bracket; the rotating bracket has a pushing position and a storage position, when the rotating bracket is in the pushing position, the piston rod of the hydraulic cylinder abuts against the conveying trolley; when the rotating bracket is in the storage position, the hydraulic cylinder and the rotating bracket are located outside the conveying track.

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