CN112774955B - Variable-pitch box type drying system and method - Google Patents
Variable-pitch box type drying system and method Download PDFInfo
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- CN112774955B CN112774955B CN202011642285.0A CN202011642285A CN112774955B CN 112774955 B CN112774955 B CN 112774955B CN 202011642285 A CN202011642285 A CN 202011642285A CN 112774955 B CN112774955 B CN 112774955B
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- 238000001035 drying Methods 0.000 title claims abstract description 143
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000009825 accumulation Methods 0.000 claims abstract description 40
- 238000004891 communication Methods 0.000 claims abstract description 5
- 230000000903 blocking effect Effects 0.000 claims description 19
- 239000003973 paint Substances 0.000 claims description 17
- 238000007664 blowing Methods 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 6
- 230000000670 limiting effect Effects 0.000 claims description 3
- 239000011295 pitch Substances 0.000 description 26
- 230000005540 biological transmission Effects 0.000 description 6
- 230000007547 defect Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
- B05D3/0272—After-treatment with ovens
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention discloses a box-type drying system with variable pitch and a method thereof, wherein the box-type drying furnace is provided with a feeding device arranged outside; the box-type drying furnace comprises a low-temperature area accumulation chain, a high-temperature area accumulation chain and a control center, wherein the low-temperature area accumulation chain comprises a second limiter and a second length detector; the feeding device comprises a first length detector and a first limiter, wherein the first length detector and the second length detector are arranged close to each other, and the first limiter and the second limiter are arranged close to each other; the control center is in signal communication with the first length detector, the first limiter, the second limiter and the second length detector, and a timing unit is further arranged in the control center, so that the problem that the utilization rate of the drying furnace is insufficient when the vehicle bodies with different lengths are mixed, transported and dried is solved.
Description
Technical Field
The invention relates to the technical field of vehicle paint drying, in particular to a variable-pitch box type drying system and a variable-pitch box type drying method.
Background
In the large-scale production of the car body, in order to enable paint on the surface of the car body to be firmly adhered, the car body needs to be dried after being sprayed, a box type drying furnace is generally applied to a car body coating line with smaller annual output, a plurality of car bodies can be generally accommodated in the furnace according to different production capacities, a furnace door seat is arranged in front of and behind the furnace body, the furnace door seat is closed in non-conveying time to prevent heat loss in the furnace, after the fixed takt time is reached, the furnace door is opened, a conveying chain is started to send the dried car body out, and a front furnace door is opened to send the car body to be dried into the furnace.
The existing box-type drying system mainly has the following defects: (1) Because the drying space in the box-type drying furnace is fixed, after the number of the vehicle bodies which can be accommodated in the furnace is required to be collected on a conveying line outside the furnace, the furnace door is opened once, parts are sent into the drying furnace for drying, and after the drying time is reached, the vehicle in the furnace is taken out once, so that the length of the conveying line in front of and behind the drying furnace is increased, the occupied area is large, the cost is high, the furnace door is required to be opened for a long time, a large amount of heat is lost in the process of sending the vehicle bodies, and resources are wasted; (2) When the scheme of fixed pitch conveying is adopted, a furnace door is opened once per fixed beat, and one-time vehicle body feeding and taking-out operation is carried out, when the vehicle bodies with various length and dimensions are dried simultaneously, the required space change is large, the fixed pitch can only be determined according to a longer vehicle body, and when the vehicle bodies with different lengths are conveyed in a mixed flow mode, a drying system simply judges whether to continuously convey the vehicle bodies into the furnace or not according to the long pitch, and whether the internal space and the vehicle bodies with short pitches can be accommodated or not can not be automatically judged, so that the utilization rate of the drying furnace is lower; (3) When the long and short car bodies adopt the same beats and drying time, the long car bodies have insufficient drying risks and the short car bodies have overdry risks because of inconsistent furnace temperature curves.
Disclosure of Invention
Aiming at the above defects or improvement demands of the prior art, the invention provides a variable-pitch box type drying system and a variable-pitch box type drying method, wherein a mounting bracket and a sliding sleeve are in sliding fit to form a bottom main bracket, so that the device can slide between a main driver and a secondary driver, the visual field demands of viewing a display screen at different positions in a vehicle are met, a supporting sleeve is arranged on the sliding sleeve and is connected with the rotating bracket through a rotating pin shaft, so that the sliding sleeve can rotate around the rotating pin shaft, and further, a locking mechanism and a rotating shaft are respectively arranged on the rotating bracket and the display device, so that the display screen can further adjust an inclination angle around the rotating pin shaft, the different visual field demands of the main driver and the secondary driver are met, the occupied area is small, the improvement of the vehicle at the later stage is facilitated, the cost is saved, and the operational efficiency is high.
In order to achieve the above object, according to one aspect of the present invention, there is provided a variable pitch box-type drying system and method, comprising:
a box-type drying furnace and a feeding device arranged outside the box-type drying furnace;
the box-type drying furnace comprises a low-temperature area accumulation chain, a high-temperature area accumulation chain and a control center, wherein the low-temperature area accumulation chain comprises a second limiter and a second length detector;
the feeding device comprises a first length detector and a first limiter, wherein the first length detector and the second length detector are arranged close to each other, and the first limiter and the second limiter are arranged close to each other;
the control center is in signal communication with the first length detector, the first limiter, the second limiter and the second length detector, and a timing unit is further arranged in the control center.
Further, the box-type drying furnace comprises a front furnace door, a rear furnace door, a stacking chain bracket and a heating device;
the front furnace door is arranged at one end, close to the stacking chain in the low temperature area, of the box-type drying furnace, the rear furnace door is arranged at one end, close to the stacking chain in the high temperature area, of the stacking chain support, and more than two stacking chain supports are arranged to support and fix the stacking chain in the low temperature area and the stacking chain in the high temperature area respectively;
the heating device is arranged outside the box-type drying furnace and comprises low-temperature area blowing openings and high-temperature area blowing openings, the low-temperature area stacking chains and the high-temperature area stacking chains are respectively communicated, and the number of the low-temperature area blowing openings is smaller than that of the high-temperature area blowing openings.
Further, the high-temperature area accumulation chain further comprises a third limiter, and the third limiter is arranged close to the rear furnace door and is in signal intercommunication with the control center.
The variable-pitch box-type drying system is characterized by further comprising a skid, wherein the skid comprises a first skid, a second skid and a third skid;
the first skid, the second skid and the third skid comprise a plurality of longitudinal beams and cross beams arranged among the longitudinal beams, and the skid is in contact connection with the feeding device, the accumulation and release chain in the low temperature area and the accumulation and release chain in the high temperature area and can slide along the three.
The cross beam can be in contact connection with the first limiter, the second limiter and the third limiter.
Further, the feeding device comprises a roller motor and a roller main body, and the roller main body is in transmission connection with the roller motor.
Further, the box-type drying furnace comprises a power and free chain motor, and the power and free chain motor is in transmission connection with the power and free chain in the high temperature area.
According to another aspect of the present invention, there is provided a method of variable pitch bin drying system, implemented using the same, comprising the steps of:
s100: the method comprises the steps that drying is started, a plurality of skids enter a box-type drying furnace to be dried, the skids sequentially comprise a first skid outside the furnace, a second skid and a third skid in the furnace, the control center controls the front furnace door and the rear furnace door to be in a closed state, a timing unit in the control center starts to record drying duration, the second limiter and the third limiter are in direct contact with the cross beam at the moment, the second skid and the third skid are blocked to be in a stagnation state, and the low-temperature area accumulation chain and the high-temperature area accumulation chain are in an idle state;
s200: detecting the length of the first skid, conveying the first skid carrying a vehicle body to be dried outside the furnace to a region close to the front furnace door by the roller main body, controlling the first limiter to block the first skid from advancing by the control center, detecting the position information of the first skid by the first length detector at the moment, and obtaining the length of the first skid by the control center according to the information;
s300: after the third skid is dried and sent out, the control center controls the rear furnace door to be opened after the vehicle body borne by the third skid meets the drying requirement, then controls the third limiter to stop blocking the third skid, the third skid is sent out of the box-type drying furnace from the rear furnace door to finish drying, then the rear furnace door is closed under the control of the control center, and the third limiter returns to a blocking position;
s400: judging whether the second skid is released to enter a high-temperature area or not, judging whether the time length meets the drying time length requirement of the second skid in a low-temperature area according to the time length recorded by the timing unit, wherein the standard of the time length requirement is determined by the paint surface drying process requirement of a specific vehicle body model on the second skid;
s410: continuously keeping the second skid in a low-temperature area for drying, and continuously keeping the second limiter to stop the second skid when the time recorded by the timing unit is less than the paint surface drying process requirement of a specific vehicle body model on the second skid, and limiting the second skid in the low-temperature area for drying;
s420: releasing the second skid into a high-temperature area for drying, wherein when the time recorded by the timing unit is longer than the paint surface drying process requirement of a specific vehicle body model on the second skid, the second limiter is controlled by the control center to cancel the blocking of the second skid, the second skid starts to be transmitted to the rear furnace door, reaches the high-temperature area accumulation chain for continuous drying, and at the moment, a section of empty space is formed at the position, close to the front furnace door, in the box-type drying furnace due to the fact that the second skid is driven away;
s500: calculating the residual length in the furnace, wherein the second length detector starts to detect the condition of the length of a spare space close to the position of the front furnace door, and the second length detector senses the position information of the end part of the second skid and sends the position information to the control center;
s600: comparing whether the length of the first skid is larger than the residual length in the furnace or not, and comparing the length of the first skid with the residual length by the control center to judge whether the residual space in the furnace can accommodate the first skid or not;
s610: continuing to dry, if the length of the first skid is greater than the residual length, the control center does not give an instruction;
s620: and the first skid is sent into the furnace for drying, if the length of the first skid is smaller than the residual length, the control center controls the front furnace door to be opened, meanwhile, the first limiter cancels the blocking of the first skid, the first skid is transmitted into the furnace to start drying, then, the control center controls the front furnace door to be closed, and the first limiter returns to a blocking state.
In general, the above technical solutions conceived by the present invention, compared with the prior art, enable the following beneficial effects to be obtained:
1. the invention provides a variable-pitch box type drying system and a variable-pitch box type drying method, wherein a first length detector and a second length detector are respectively arranged on a feeding device outside a furnace and a accumulating chain in a low-temperature area inside the furnace, and are communicated with a control center signal, and whether the space inside the furnace is enough or not is judged by comparing the residual area inside the furnace with the length of a skid outside the furnace, so that the problem that the space inside the furnace cannot be fully utilized due to the fixed conveying pitch of the traditional box type drying furnace is solved, and the utilization rate of the box type drying furnace is improved.
2. The invention provides a box-type drying system and a method with variable pitch, wherein a third limiter and a second limiter are respectively arranged on a high-temperature region accumulation chain and a low-temperature region accumulation chain, and are matched with a timing unit arranged in a control center, so that whether a high-temperature region vehicle body and a low-temperature region vehicle body meet drying conditions can be respectively judged, the condition of insufficient drying time is prevented, and meanwhile, the problem of paint film drying defect caused by too fast temperature rise of the low-temperature region vehicle body is solved.
3. The invention provides a box-type drying system with variable pitch and a method thereof.A timing unit arranged in a control center can record the drying time in a furnace, the control center can also input the vehicle body paint surface drying process requirement in advance, the control center can ensure that the vehicle body paint surface is not excessively dried by comparing the process requirement with the drying time, and the utilization rate of the box-type drying furnace is improved.
Drawings
Fig. 1 is a schematic view of a box-type drying system with variable pitch according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a feeding device of a variable pitch box-type drying system according to an embodiment of the present invention;
fig. 3 is a schematic view showing a structure of a box-type drying oven of a box-type drying system with a variable pitch according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a variable pitch box-type drying system according to a second embodiment of the present invention;
fig. 5 is a schematic view showing a structure of a skid of a variable pitch box type drying system according to an embodiment of the present invention;
fig. 6 is a flow chart of a variable pitch box drying method according to an embodiment of the invention.
Like reference numerals denote like technical features throughout the drawings, in particular: 1-feeding device, 2-box type drying furnace, 3-skid, 11-rolling machine motor, 12-first length detector, 13-rolling machine main body, 14-first limiter, 21-front furnace door, 22-low temperature area accumulation chain, 23-high temperature area accumulation chain, 24-control center, 25-rear furnace door, 26-accumulation chain support, 27-heating device, 31-first skid, 32-second skid, 33-third skid, 221-second limiter, 222-second length detector, 231-third limiter, 232-accumulation chain motor, 241-timing unit, 271-low temperature area blowing port, 272-high temperature area blowing port, 311-longitudinal beam and 312-cross beam.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
As shown in fig. 1 to 6, the present invention provides a variable-pitch box-type drying system and method, which comprises a box-type drying furnace 2 and a feeding device 1 provided at the front end thereof, wherein a roller body 13 and a stacking chain are respectively provided inside the two, the roller body 13 and the stacking chain can convey a sled 3 from a front oven door 21 to a rear oven door 25 by the driving of a power device, wherein the sled 3 is used for carrying and conveying a vehicle body, a first length detector 12 and a first limiter 14 are further provided on the feeding device 1, a second length detector 222, a second limiter 221, a third limiter 231 and a control center 24 are provided on the box-type drying furnace 2, in particular, the first length detector 12 and the second length detector 222 are both provided close to the front oven door 21, further, the first length detector 12 and the second length detector 222 can both detect the length of the sled 3, in the case of carrying out mixed-flow drying of the bodies of different lengths, the lengths of the skids 3 used for carrying the different bodies are different, in this embodiment, when the box-type drying furnace 2 is used for drying normally and the bodies are sent out to the rear furnace door 25, the body closest to the front furnace door 21 outside the furnace is carried and conveyed by the first skids 31, the body closest to the front furnace door 21 inside the furnace is carried and conveyed by the second skids 32, the body closest to the rear furnace door 25 inside the furnace is carried and conveyed by the third skids 33, the first skids 31, the second skids 32 and the third skids 33 are just named as the three are convenient to distinguish in the state, the technical characteristic compositions of the three are the same as the skids 3, further, the second length detector 222 detects the distance between the second skids 32 and the front furnace door 21 and sends data to the control center 24, meanwhile, the first length detector 12 detects the length of the first skid 31 and sends the length to the control center 24, the control center 24 compares the distance with the length, if the distance is larger than the length, the first limiter 14 is controlled to stop the limiting action of the first skid 31 and open the front furnace door 21 to send the first skid into the furnace for drying, the second length detector 222 and the first length detector 12 which are respectively distributed in the furnace and outside the furnace are adopted in the drying system, whether the space remaining space in the furnace is enough to accommodate the vehicle body to be dried is judged through the detection of the space remaining in the furnace, the space is saved compared with a fixed-pitch drying furnace, the drying efficiency is improved, and the system is suitable for mixed flow drying of different vehicle body lengths.
Further, as shown in fig. 1, fig. 2 and fig. 5, the feeding device 1 includes a roller motor 11, a first length detector 12, a roller main body 13 and a first limiter 14, the roller motor 11 transmits power to the roller main body 13, preferably, a transmission device can be added between the roller motor 11 and the roller main body 13, the roller main body 13 is directly contacted with a skid 3 carrying a car body, when the skid 3 is conveyed to be close to the front oven door 21 through the roller main body 13, the first limiter 14 blocks the skid 3 from entering the oven, preferably, the skid 3 includes a plurality of longitudinal beams 311 and a plurality of cross beams 312 fixed between the longitudinal beams 311, the first limiter 14 can be in direct contact with the cross beams 312 in a lifting blocking manner, so as to achieve the purpose of blocking the skid 3, further, the first length detector 12 can be provided with more than one and is fixed on the roller main body 13 along two sides of the skid 3, preferably, the length of the first length detector 12 can be greater than the length of the skid 3, and the first length detector 12 and the front oven door 21 are in communication with the center of the oven door 24, and the center of the first length detector 24 is provided with the drying device 1, and the center of the drying device is controlled by the control device.
Further, as shown in fig. 2-5, the box-type drying oven 2 comprises a front oven door 21, a low temperature area stacking chain 22, a high temperature area stacking chain 23, a control center 24, a rear oven door 25, a stacking chain support 26 and a heating device 27, wherein the front oven door 21 and the rear oven door 25 are in signal communication with the control center 24 and are controlled to open and close by the control center, preferably, a timing unit 241 is arranged in the control center 24, after the first sled 31, the second sled 32 and the third sled 33 enter the box-type drying oven 2, the timing unit 241 starts timing, the time length recorded by the timing unit 241 is used for judging by the control center 24, the judging comparison standard is determined by the process requirement of the specific vehicle body type paint surface drying, the standard can be set in the control center 24 in advance, in addition, the stacking chain support 26 can be provided with a plurality of, the low temperature region power and free chain 22 and the high temperature region power and free chain 23 are used for supporting the skid 3, further, the high temperature region power and free chain 23 also comprises a third limiter 231 and a power and free chain motor 232, the power and free chain motor 232 can be connected to the high temperature region power and free chain 23 by adopting a transmission device, the high temperature region power and free chain 23 is in transmission connection with the low temperature region power and free chain 22 to drive the latter to transmit, the third limiter 231 is controlled by the control center 24 to stop the skid 3, preferably, the low temperature region power and free chain 22 also comprises a second limiter 221 and a second length detector 222, both of which are arranged close to the front furnace door 21, the second limiter 221 is also controlled by the control center 24 to stop the skid 3, and the second length detector 222 can detect the distance between the skid 3 nearest to the front furnace door 21 in the furnace, and data is transmitted to the control center 24 as a judgment basis, and further, the heating device 27 is arranged at the outer side of the box-type drying furnace 2 and is communicated into the furnace through a low-temperature area air blowing port 271 and a high-temperature area air blowing port 272, the low-temperature air blowing port 271 is communicated to a front accumulation chain 22 area, the high-temperature area air blowing port 272 is communicated to a rear accumulation chain 23 area, the number of the latter is larger than that of the former, the front accumulation chain 22 area forms a low-temperature area, and the high-temperature area of the rear accumulation chain 23 is transited, so that the low-temperature to high-temperature slow rising trend is shown in the process of drying a vehicle body, and paint film drying defects are reduced.
Further, as shown in fig. 1 to 6, the method of the variable pitch box type drying system includes the steps of:
s100: drying is started;
specifically, a plurality of vehicle bodies with different sizes and lengths are carried by the skids 3 with corresponding sizes and lengths and enter the box-type drying furnace 2, namely a first skid 31 outside the furnace, a second skid 32 in the furnace and a third skid 33, wherein a plurality of other skids 3 can be contained between the second skid 32 and the third skid 33, the control center 24 controls the front furnace door 21 and the rear furnace door 25 to be in a closed state, a timing unit 241 therein starts to record the drying time length, the second limiter 221 and the third limiter 231 are in direct contact with the cross beam 312 at the moment, the second skid 32 and the third skid 33 are blocked and are in a stagnation state, and the low-temperature area accumulation chain 22 and the high-temperature area accumulation chain 23 are in an idle state;
s200: detecting the length of the first sled 31;
specifically, the roller main body 13 conveys the skid 3 carrying the body to be dried outside the furnace to a region close to the front furnace door 21, the control center 24 controls the first limiter 14 to block the first skid 31 from moving forward, the first skid 31 carries the body to be dried, the first length detector 12 can detect the position information of the first skid 31 far away from the furnace door end at this time, and the control center 24 obtains the length of the first skid 31 from the information;
s300: drying the third skid 33 and sending out;
specifically, in the box-type drying furnace 2, after the vehicle body carried by the third sled 33 meets the drying requirement, the control center 24 controls the rear furnace door 25 to be opened, then controls the third limiter 231 to stop blocking the third sled 33, the vehicle body is conveyed from the rear furnace door 25 to the box-type drying furnace 2 to finish drying under the transmission action of the high-temperature area accumulation chain 23, then the rear furnace door 25 is closed under the control of the control center 24, the third limiter 231 returns to a blocking position, and the other sliders 3 reach the blocking position to stop to continue drying;
s400: judging whether the second sled 32 is released to enter a high temperature zone;
specifically, at this time, whether the time length meets the drying time length requirement of the second sled 32 in the low temperature area is judged according to the time length recorded by the timing unit 241, and the standard of the time length requirement is determined by the paint surface drying process requirement of the specific vehicle body model on the second sled 32;
s410: continuing to keep the second skid 32 in the low temperature area for drying;
specifically, when the duration recorded by the timing unit 241 is less than the paint surface drying process requirement of the specific vehicle body model on the second skid 32, the second limiter 221 keeps blocking the second skid 32, and limits the second skid 32 to a low temperature area for drying;
s420: releasing the second skid 32 into a high temperature area for drying;
specifically, when the duration recorded by the timing unit 241 is longer than the paint surface drying process requirement of a specific vehicle body model on the second skid 32, the second limiter 221 is controlled by the control center 24 to cancel blocking of the second skid 32, the second skid 32 starts to be conveyed to the rear oven door 25, reaches the high-temperature region stacking chain 23 to continue drying, and at the moment, a section of empty space is formed in the box-type drying oven 2 close to the front oven door 21 due to the fact that the second skid 32 is driven away;
s500: calculating the residual length in the furnace;
specifically, the second length detector 222 starts to detect the length of the empty space near the front door 21, and senses the position information of the end of the second sled 32 and sends the information to the control center 24, and since the end of the second length detector 222 far from the front door 21 is fixed, the control center 24 can obtain the length of the empty space near the front door 21 by subtracting the distance between the end of the second sled 32 and the end of the second length detector 222 from the fixed distance;
s600: comparing whether the length of the first sled 31 is greater than the remaining length in the oven;
specifically, the control center 24 determines whether the first skid 31 can be accommodated in the remaining space in the furnace by comparing the length of the first skid 31 with the remaining length;
s610: continuously drying;
specifically, if the length of the first sled 31 is greater than the remaining length, the control center 24 does not make an instruction;
s620: feeding into a first skid 31 for drying;
specifically, if the length of the first sled 31 is smaller than the remaining length, the control center 24 controls the front oven door 21 to open, meanwhile, the first limiter 14 cancels blocking of the first sled 31, the first sled 31 is conveyed into the oven by the roller bed main body 13 to start drying, then the control center 24 controls the front oven door 21 to close, the first limiter 14 returns to the blocking state, and blocks the sled 3 behind the first sled 31 on the feeding device 1.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (7)
1. A variable pitch bin dryer system, comprising:
the device comprises a box-type drying furnace (2), a skid (3) and a feeding device (1) arranged outside the box-type drying furnace (2);
the box-type drying furnace (2) comprises a low-temperature area accumulation chain (22), a high-temperature area accumulation chain (23) and a control center (24), wherein the low-temperature area accumulation chain (22) comprises a second limiter (221) and a second length detector (222); the skid (3) is in contact connection with the feeding device (1), the low-temperature area accumulation chain (22) and the high-temperature area accumulation chain (23) and can slide along the three;
the feeding device (1) comprises a first length detector (12) and a first limiter (14), wherein the first length detector (12) and the second length detector (222) are arranged close to each other, and the first limiter (14) and the second limiter (221) are arranged close to each other;
the control center (24) is in signal intercommunication with the first length detector (12), the first limiter (14), the second limiter (221) and the second length detector (222), a timing unit (241) is further arranged in the control center (24), the timing unit (241) records the time when the sled (3) enters the box-type drying furnace (2), a comparison standard is arranged in the control center (24), the comparison standard comprises the process requirement of vehicle body type paint surface drying, and the control center (24) compares the time recorded by the timing unit (241) with the process requirement.
2. A variable pitch bin drying system according to claim 1, wherein the bin dryer (2) comprises a front oven door (21), a rear oven door (25), a stacking chain support (26) and heating means (27);
the front furnace door (21) is arranged at one end, close to the low-temperature area accumulation chain (22), of the box-type drying furnace (2), the rear furnace door (25) is arranged at one end, close to the high-temperature area accumulation chain (23), of the accumulation chain support (26) is provided with more than two accumulation chain supports, and the low-temperature area accumulation chain (22) and the high-temperature area accumulation chain (23) are respectively supported and fixed;
the heating device (27) is arranged outside the box-type drying furnace (2) and comprises low-temperature area blowing openings (271) and high-temperature area blowing openings (272), the low-temperature area blowing openings are respectively communicated with the accumulating chain (22) and the accumulating chain (23) in the high-temperature area, and the number of the low-temperature area blowing openings (271) is smaller than that of the high-temperature area blowing openings (272).
3. A variable pitch bin drying system according to claim 2, wherein said hot zone accumulation chain (23) further comprises a third stop (231), said third stop (231) being provided close to said rear oven door (25) and in signal communication with said control centre (24).
4. A variable pitch bin drying system according to claim 2, wherein said skid (3) comprises a first skid (31), a second skid (32) and a third skid (33);
the first skid (31), the second skid (32) and the third skid (33) comprise a plurality of longitudinal beams (311) and transverse beams (312) arranged among the longitudinal beams (311).
5. A variable pitch box dryer system according to any one of claims 1-4, characterized in that the feeding device (1) comprises a roller motor (11) and a roller body (13), the roller body (13) being in driving connection with the roller motor (11).
6. A variable pitch bin drying system according to any one of claims 1-4, characterized in that said bin dryer (2) comprises a power and free chain motor (232), said power and free chain motor (232) being in driving connection with said high temperature zone power and free chain (23).
7. A variable pitch box drying method, characterized in that it is implemented by using a variable pitch box drying system and method according to any one of claims 1-6, comprising the steps of:
s100: starting drying, wherein a plurality of skids (3) enter a box-type drying furnace (2) for drying, the skids (3) sequentially comprise a first skid (31) outside the furnace, a second skid (32) and a third skid (33) inside the furnace, the control center (24) controls the front furnace door (21) and the rear furnace door (25) to be in a closed state, a timing unit (241) in the control center starts to record drying time, and the second limiter (221) and the third limiter (231) are in direct contact with the cross beam (312) at the moment, the second skid (32) and the third skid (33) are blocked to be in a stagnation state, and the low-temperature area accumulation chain (22) and the high-temperature area accumulation chain (23) are in an idle state;
s200: detecting the length of the first skid (31), conveying the first skid (31) carrying a vehicle body to be dried outside a furnace to a region close to the front furnace door (21) by the roller main body (13), controlling the first limiter (14) to stop the first skid (31) from advancing by the control center (24), and detecting the position information of the first skid (31) by the first length detector (12) at the moment, and obtaining the length of the first skid (31) by the control center (24) according to the information;
s300: after the third skid (33) is dried and sent out, after the vehicle body borne by the third skid (33) meets the drying requirement, the control center (24) controls the rear furnace door (25) to be opened, then controls the third limiter (231) to stop blocking the third skid (33), the third skid (33) is sent out of the box-type drying furnace (2) from the rear furnace door (25) to finish drying, then the rear furnace door (25) is closed under the control of the control center (24), and the third limiter (231) returns to a blocking position;
s400: judging whether the second skid (32) is released to enter a high-temperature area or not, judging whether the time length meets the drying time length requirement of the second skid (32) in a low-temperature area according to the time length recorded by the timing unit (241), wherein the standard of the time length requirement is determined by the paint surface drying process requirement of a specific vehicle body model on the second skid (32);
s410: continuously keeping the second skid (32) in a low-temperature area for drying, and continuously keeping the second limiter (221) to stop the second skid (32) when the time recorded by the timing unit (241) is less than the paint surface drying process requirement of a specific vehicle body model on the second skid (32), and limiting the second skid (32) in the low-temperature area for drying;
s420: releasing the second skid (32) into a high-temperature area for drying, wherein when the time recorded by the timing unit (241) is longer than the paint surface drying process requirement of a specific vehicle body model on the second skid (32), the second limiter (221) is controlled by the control center (24) to cancel blocking of the second skid (32), the second skid (32) starts to be transmitted to the rear furnace door (25) and reaches the high-temperature area accumulation chain (23) for continuous drying, and at the moment, a position, close to the front furnace door (21), in the box-type drying furnace (2) forms a vacant space due to the fact that the second skid (32) drives away;
s500: calculating the residual length in the furnace, wherein the second length detector (222) starts to detect the condition of the length of a spare space close to the position of the front furnace door (21), and the position information of the end part of the second sled (32) is sensed and sent to the control center (24), so that the distance between the end part of the second sled (32) and the end part of the second length detector (222) can be subtracted by the control center (24) because the position of the end part of the second length detector (222) away from the front furnace door (21) is fixed and the distance between the end part of the second sled and the end part of the second length detector (222) is also fixed, and the residual length close to the front furnace door (21) can be obtained;
s600: comparing whether the length of the first skid (31) is larger than the residual length in the furnace, and the control center (24) compares the length of the first skid (31) with the residual length to judge whether the residual space in the furnace can accommodate the first skid (31);
s610: continuing to dry, if the length of the first skid (31) is greater than the residual length, the control center (24) does not give an instruction;
s620: and the first skid (31) is sent in for drying, if the length of the first skid (31) is smaller than the residual length, the control center (24) controls the front furnace door (21) to be opened, meanwhile, the first limiter (14) cancels blocking of the first skid (31), the first skid (31) is conveyed into the furnace to start drying, then the control center (24) controls the front furnace door (21) to be closed, and the first limiter (14) returns to a blocking state.
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| JPH11290766A (en) * | 1998-04-13 | 1999-10-26 | Taikisha Ltd | Method for controlling air supply and exhaust of continuous drying furnace for coating |
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