CN108541147B - Repair table heating system - Google Patents
Repair table heating system Download PDFInfo
- Publication number
- CN108541147B CN108541147B CN201810617865.0A CN201810617865A CN108541147B CN 108541147 B CN108541147 B CN 108541147B CN 201810617865 A CN201810617865 A CN 201810617865A CN 108541147 B CN108541147 B CN 108541147B
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- triangular pyramid
- hot air
- slideway
- air bag
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 22
- 230000008439 repair process Effects 0.000 title claims description 13
- 238000007789 sealing Methods 0.000 claims description 14
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000003466 welding Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/22—Secondary treatment of printed circuits
- H05K3/225—Correcting or repairing of printed circuits
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Package Closures (AREA)
Abstract
The invention discloses a repairing table heating system, which relates to the field of electronic component repairing equipment, and comprises a drainage triangular pyramid, wherein the side surface of the drainage triangular pyramid is provided with a through hole and a plurality of openings, a slideway for communicating the through hole and a channel for passing through the slideway are also arranged in the drainage triangular pyramid, a stop block is connected in the slideway in a sliding way, a spring is arranged between one side of the stop block extending into the drainage triangular pyramid and the bottom wall of the slideway, and a first air bag which can be contacted with the stop block is fixedly connected outside the drainage triangular pyramid; the drainage triangular pyramid is internally provided with a cylinder body, one side, close to the opening, of the cylinder body is communicated with a second air bag, one side, close to the slideway, of the cylinder body is communicated with the first air bag, a moving rod is connected to the piston, one end of the moving rod penetrates through the channel and stretches into a spring in the slideway, and the other end of the moving rod is attached to the inner side wall of the drainage triangular pyramid. The invention solves the problem of uneven hot air blown out by the existing repairing table heating device, and mainly provides a repairing table heating system capable of enabling the temperature of the hot air blown out by the existing repairing table heating device to be uniform.
Description
Technical Field
The invention relates to the field of electronic component repair equipment, in particular to a repair table heating system.
Background
The BGA repair table is a repair device for welding, re-welding and replacing BGA chips and elements on a circuit board in the maintenance of the circuit board, and the principle is that the solder between the main board and the BGA chips and elements is melted by heating the front and back surfaces of the BGA chips and elements and the main board in two directions. The heaters commonly used on the BGA repair table are 3 kinds of hot air heaters, far infrared heaters and infrared heaters, and the hot air heaters are generally used in the market at present.
The BGA packaged chips require special machinery for disassembly and soldering during repair. BGA packages are characterized by solder feet at the bottom of the chip and the housing is typically of a resin, which requires a uniform hot air temperature during heating. Along with the trend of chip miniaturization, the heating welding has higher requirements on the flow speed of hot air, the speed cannot be high, and the hot air passes through the chip as softly as possible, so that the interference on the chip with small volume is reduced, and the displacement is avoided. It is also important that the temperature uniformity of the entire heated surface of the BGA packaged chip is important when heating to avoid chip deformation. At present, after the hot air is discharged from the heating element, the hot air passes through the pore plate and is blown to the surface of the chip, and the temperature of the hot air blown out from the middle of the hot air nozzle is obviously higher than that of the hot air around the hot air nozzle, so that the temperature blown onto the chip is uneven, and the disassembling and welding effects of the chip are poor.
Disclosure of Invention
The invention aims to provide a heating system for a repair bench, which can make the temperature of hot air of blown air uniform.
In order to solve the technical problems, the basic scheme provided by the invention is as follows:
the repair table heating system comprises a heater and a hot air nozzle, wherein an air outlet is formed at the hot air nozzle;
a supporting shaft is fixedly connected in the hot air nozzle, a driving bevel gear is rotationally connected on the supporting shaft, a fan blade is fixedly connected on one side of the driving bevel gear, a hollow rotating shaft is rotationally connected in the hot air nozzle, a driven bevel gear meshed with the driving bevel gear is coaxially fixedly connected on the rotating shaft, a drainage triangular pyramid is fixedly connected on the rotating shaft at the lower side of the driven bevel gear, and the rotating shaft penetrates through the vertex of the drainage triangular pyramid and stretches into the drainage triangular pyramid;
the three side surfaces of the drainage triangular pyramid are respectively provided with a through hole and a plurality of openings, the through holes are close to the vertexes of the drainage triangular pyramid, and the bottom surface of the drainage triangular pyramid is hollowed out;
the drainage triangular pyramid is internally provided with a slideway communicated with the through hole and a channel penetrating through the slideway, a stop block which can extend out of the drainage triangular pyramid is connected in a sliding manner in the slideway, a spring is arranged between one side of the stop block extending into the drainage triangular pyramid and the bottom wall of the slideway, and a first air bag which can be in contact with the stop block is fixedly connected outside the drainage triangular pyramid;
the novel drainage triangular pyramid is characterized in that a cylinder body is arranged in the drainage triangular pyramid, a piston is hermetically sealed in the cylinder body in a sliding manner, one side, close to the opening, of the cylinder body is communicated with a second air bag, the first air bag is communicated with one side, close to the slideway, of the cylinder body, a piston rod is arranged on the piston, one end, extending out of the cylinder body, of the piston rod is connected with a Z-shaped moving rod, one end of the moving rod penetrates through a channel and stretches into a spring in the slideway, the other end of the moving rod is attached to the inner side wall of the drainage triangular pyramid, a diversion hole is formed in one side, close to the opening, of the moving rod, and the diversion hole can be overlapped or staggered with the opening.
The working principle of the basic scheme is as follows: when the hot air nozzle is aligned with the BGA chip to be disassembled and welded on the PCB, the heater is started to heat air, the hot air is blown out through the drainage triangular pyramid in the hot air nozzle, and as the rotating shaft penetrates through the top point of the drainage triangular pyramid and stretches into the drainage triangular pyramid, the bottom surface of the drainage triangular pyramid is hollowed out, and the three side surfaces of the drainage triangular pyramid are provided with through holes and a plurality of openings, the hot air at the central position of the hot air nozzle enters the triangular pyramid from the hollow rotating shaft, part of the hot air at the center is blown out downwards along the side surfaces of the triangular pyramid, and the side surfaces of the triangular pyramid play a role in guiding the hot air, so that the middle hot air is diffused to the periphery; and the hot air around the hot air nozzle enters the triangular pyramid through the opening and is blown to the central position of the hot air nozzle, so that the hot air at the central position and the hot air at the peripheral position are mixed, and the temperature of the hot air blown out from the air outlet is more uniform.
The hot air nozzle is internally fixedly connected with a supporting shaft, a driving bevel gear is rotationally connected to the supporting shaft, a fan blade is fixedly connected to one side of the driving bevel gear, a hollow rotating shaft is rotationally connected to the inside of the hot air nozzle, a driven bevel gear meshed with the driving bevel gear is fixedly connected to the rotating shaft, and the rotating shaft penetrates through the top of the drainage triangular pyramid and stretches into the drainage triangular pyramid; therefore, the fan blades start to rotate along the vertical direction under the action of hot air, the fan blades drive the driving bevel gear to rotate along the vertical direction, the driving bevel gear drives the driven bevel gear meshed with the driving bevel gear to rotate along the horizontal direction, the rotating driven bevel gear drives the rotating shaft to rotate, and the rotating shaft drives the whole drainage triangular pyramid to rotate along the horizontal direction. The rotating drainage triangular pyramid plays a role in stirring hot air in the hot air nozzle, and the rotating drainage triangular pyramid can disturb the flow direction of the hot air, so that the hot air in the hot air nozzle forms a turbulent flow, and the hot air in the center and the periphery is further uniformly mixed.
The first air bag is positioned outside the drainage triangular pyramid, and the second air bag is positioned inside the drainage triangular pyramid, so that the first air bag senses the temperature outside the drainage triangular pyramid, and the second air bag senses the temperature inside the drainage triangular pyramid;
when the temperature inside the drainage triangular pyramid is higher than the temperature outside, the pressure in the second air bag is higher than the pressure in the first air bag, the piston in the cylinder body moves towards the direction in the first air bag, the piston drives the piston rod to move towards the direction of the slideway, so that a moving rod attached to the inner side wall of the drainage triangular pyramid moves towards the vertex of the drainage triangular pyramid, the moving rod always compresses a spring, a diversion hole on the moving rod gradually coincides with an opening, the exposed area of the opening is increased, so that hot air around the opening is blown to the central position in the hot air nozzle, more hot air with low temperature around the opening enters the center, and is mixed with hot air with high temperature in the center, so that the temperature of hot air in the center is reduced, and the temperature inside the drainage triangular pyramid is gradually reduced; when the piston moves towards the first air bag, the first air bag is gradually expanded, and as the first air bag is fixedly connected to the drainage triangular pyramid, the expanded air bag extrudes the stop block to move towards the inside of the slideway, so that more central hot air is blown to the peripheral position in the hot air nozzle through the side face of the drainage triangular pyramid, the temperature outside the drainage triangular pyramid is gradually increased, and the temperature inside and outside the drainage triangular pyramid reaches a dynamic balance state.
When the temperature inside the drainage triangular pyramid is lower than the temperature outside, the pressure in the first air bag is higher than the pressure in the second air bag, the piston in the cylinder body moves towards the direction in the second air bag, the piston drives the piston rod to move towards the direction away from the slideway, so that the moving rod attached to the inner side wall of the drainage triangular pyramid moves towards the direction away from the vertex of the drainage triangular pyramid, the diversion hole on the moving rod is gradually staggered with the opening, the exposed area of the opening is reduced, thereby reducing the blowing of hot air around to the central position in the hot air nozzle through the opening, enabling less hot air around with low temperature to be mixed with hot air with high temperature in the center, and further gradually increasing the temperature inside the drainage triangular pyramid; when the movable rod moves towards the direction away from the vertex of the drainage triangular pyramid, one end of the movable rod extending into the slideway gradually leaves the slideway along the channel, the compressed spring does not have the pressure of the movable rod, the stop block can be pushed to move outwards of the slideway, and the central hot air is reduced to be blown to the peripheral position in the hot air nozzle through the side face of the drainage triangular pyramid, so that the temperature outside the drainage triangular pyramid is gradually reduced.
The basic scheme has the beneficial effects that:
1. compared with the existing repairing table heating device, the hot air flow direction of the central position and the peripheral position of the hot air nozzle is changed by arranging the drainage triangular pyramid, so that the hot air at the central position and the peripheral position is mixed, the temperature of the hot air blown out from the air outlet is more uniform, the chip is prevented from being deformed due to uneven heating, and the disassembling and welding effects of the chip are improved.
2. The temperature inside and outside the drainage triangular pyramid is sensed through the first air bag and the second air bag to automatically adjust the size of the opening and the length of the stop block extending out of the drainage triangular pyramid, so that the balance of the temperature inside and outside the drainage triangular pyramid is achieved, and the self-adjustment and control of the temperature are realized.
3. The hot air is used as a driving force to drive the driving bevel gear to rotate, and then the driving bevel gear drives the driven bevel gear to rotate, so that the whole drainage triangular pyramid rotates, and the hot air in the hot air nozzle forms a turbulent flow, so that the hot air in the center and the periphery is further uniformly mixed.
4. The rotation of the triangular pyramid is combined with the change of the flow direction of the hot air, so that the blown hot air is more intensively blown to the chip, the loosening of elements around the chip due to the influence of the hot air is avoided, the protection of the elements which are not required to be disassembled is realized, and the repairing efficiency is improved.
Further, the drainage triangular pyramid comprises an integrated elastic body formed by spirally stacking sealing strips from bottom to top and a bottom plate in sliding connection with the bottom of the elastic body, wherein the elastic body and the bottom plate enclose to form the drainage triangular pyramid, the elastic body is three side faces of the drainage triangular pyramid, and the bottom plate is the bottom face of the drainage triangular pyramid.
By adopting the structure, the whole drainage triangular pyramid formed by the elastic body and the bottom plate not only can play a role in guiding hot air and changing the wind direction, but also can blow the hot air to the chip through small gaps among sealing strips of the drainage triangular pyramid.
Further, the inner side wall of the triangular pyramid is fixedly connected with a third air bag, and the third air bag can be in contact with the bottom plate.
The third gasbag aim at responds to the temperature in the drainage triangular pyramid, when the temperature in the drainage triangular pyramid is too high, the third gasbag of inflation can downwardly extrusion bottom plate, bottom plate and the bottom sliding connection of elastomer, so under the extrusion of first gasbag, the bottom plate slides downwardly, thereby the gap between each sealing strip of elastomer increases, the heat dissipation in the drainage triangular pyramid has been accelerated, realize the self-regulation of drainage triangular pyramid temperature through third gasbag response temperature, avoid the inside and outside difference in temperature of drainage triangular pyramid too big and make the hot-blast inhomogeneous that the air outlet blew out.
Further, the opening and the through hole are formed in the sealing strip.
The opening and the through hole are formed in the sealing strips, so that the sealing strips of the elastic body can be tightly abutted, and the drainage effect of the drainage triangular pyramid is better.
Further, the outer end of the slide way positioned on the drainage triangular pyramid is inclined towards the bottom surface direction of the drainage triangular pyramid.
By adopting the structure, the baffle in the slideway is inclined towards the bottom surface direction of the drainage triangular pyramid, hot air at the central position in the hot air nozzle can be better blown to the periphery along the baffle, and the baffle can play a better guiding role.
Further, the openings are uniformly arranged along the length direction of each side surface.
By adopting the structure, the hot air around the hot air nozzle can be blown to the chip from different angles, so that the mixing effect of hot air is improved.
Drawings
FIG. 1 is a schematic diagram of a heating system for a repair station according to an embodiment of the present invention;
fig. 2 is an enlarged view at a in fig. 1.
Detailed Description
The following is a further detailed description of the embodiments:
reference numerals in the drawings of the specification include: the hot air nozzle 1, the support shaft 2, the driving bevel gear 3, the rotating shaft 4, the driven bevel gear 5, the drainage triangular pyramid 6, the through hole 7, the opening 8, the slideway 9, the channel 10, the stop block 11, the first air bag 12, the cylinder 13, the second air bag 14, the moving rod 15, the drainage hole 16, the third air bag 17, the elastic body 61, the sealing strip 611 and the bottom plate 62.
As shown in fig. 1 and 2, the repairing table heating system comprises a heater and a hot air nozzle 1, wherein an air outlet is formed at the hot air nozzle 1;
a supporting shaft 2 is fixedly connected in the hot air nozzle 1, a driving bevel gear 3 is rotationally connected to the supporting shaft 2, fan blades are welded on one side of the driving bevel gear 3, a hollow rotating shaft 4 is rotationally connected in the hot air nozzle 1, the rotating shaft 4 is rotationally connected with the inner wall of the hot air nozzle 1 through a connecting rod, a driven bevel gear 5 meshed with the driving bevel gear 3 is coaxially fixedly connected on the rotating shaft 4, a drainage triangular pyramid 6 is fixedly connected on the rotating shaft 4 at the lower side of the driven bevel gear 5, and the rotating shaft 4 penetrates through the vertex of the drainage triangular pyramid 6 and stretches into the drainage triangular pyramid 6;
the drainage triangular pyramid 6 in the embodiment comprises an integral elastic body 61 formed by spirally stacking sealing strips 611 from bottom to top, a bottom plate 62 is welded at the bottom of the elastic body 61, the elastic body 61 and the bottom plate 62 are enclosed to form the drainage triangular pyramid 6, the elastic body 61 is three side surfaces of the drainage triangular pyramid 6, and the bottom plate 62 is the bottom surface of the drainage triangular pyramid 6;
the three side surfaces of the drainage triangular pyramid 6 are provided with a through hole 7 and a plurality of openings 8, the through hole 7 is positioned at the middle upper part of the drainage triangular pyramid 6, the openings 8 are positioned at the middle lower part of the drainage triangular pyramid 6, the openings 8 are uniformly arranged along the length direction of each side surface, the openings 8 and the through holes 7 are arranged on sealing strips 611, so that each sealing strip 611 of the elastic body 61 can be tightly abutted, the through hole 7 is close to the top point of the drainage triangular pyramid 6, and the bottom surface of the drainage triangular pyramid 6 is hollowed out;
the inside of the drainage triangular pyramid 6 is also provided with a slideway 9 communicated with the through hole 7 and a channel 10 penetrating through the slideway 9, the slideway 9 is positioned at the outer end of the drainage triangular pyramid 6 and inclines towards the bottom surface direction of the drainage triangular pyramid 6, a stop block 11 which can extend out of the drainage triangular pyramid 6 is connected in a sliding manner in the slideway 9, a spring is arranged between the side of the stop block 11 extending into the drainage triangular pyramid 6 and the bottom wall of the slideway 9, and a first air bag 12 which can be contacted with the stop block 11 is fixedly connected outside the drainage triangular pyramid 6;
a cylinder body 13 is arranged in the drainage triangular pyramid 6, a piston is hermetically sealed in the cylinder body 13 in a sliding manner, one side of the cylinder body 13 close to the opening 8 is communicated with a second air bag 14, a first air bag 12 is communicated with one side of the cylinder body 13 close to the slideway 9, a piston rod is arranged on the piston, one end of the piston rod extending out is connected with a Z-shaped movable rod 15, one end of the movable rod 15 penetrates through the channel 10 and extends into a spring in the slideway 9, the other end of the movable rod 15 is attached to the inner side wall of the drainage triangular pyramid 6, one side of the movable rod 15 close to the opening 8 is provided with a diversion hole 16, and the diversion hole 16 can be overlapped with or staggered with the opening 8;
the inner side wall of the triangular pyramid is fixedly connected with a third air bag 17, and the third air bag 17 can be contacted with the bottom plate 62.
The heating system of the repair table is realized according to the following principle:
when the hot air nozzle 1 is aligned with the BGA chip to be disassembled on the PCB, the heater is started to heat air, the hot air is blown out through the drainage triangular pyramid 6 in the hot air nozzle 1, as the rotating shaft 4 penetrates through the top point of the drainage triangular pyramid 6 and stretches into the drainage triangular pyramid 6, the bottom surface of the drainage triangular pyramid 6 is hollowed, and the three side surfaces of the drainage triangular pyramid 6 are provided with the through holes 7 and the openings 8, so that the hot air at the central position of the hot air nozzle 1 enters the triangular pyramid from the hollow rotating shaft 4, and part of the hot air at the center is blown out downwards along the side surfaces of the triangular pyramid, and the side surfaces of the triangular pyramid play a role in guiding the hot air, so that the middle hot air is diffused to the periphery; the hot air around the hot air nozzle 1 enters the triangular pyramid through the opening 8 and is blown to the central position of the hot air nozzle 1, so that the hot air at the central position and the hot air at the peripheral position are mixed, and the temperature of the hot air blown out from the air outlet is more uniform.
In the process of blowing out hot air outwards, the fan blades start to rotate along the vertical direction under the action of the hot air, the fan blades drive the driving bevel gear 3 to rotate along the vertical direction, the driving bevel gear 3 drives the driven bevel gear 5 meshed with the driving bevel gear 3 to rotate along the horizontal direction, the rotating driven bevel gear 5 drives the rotating shaft 4 to rotate, and the rotating shaft 4 drives the whole drainage triangular pyramid 6 to rotate along the horizontal direction. The rotating drainage triangular pyramid 6 plays a role in stirring hot air in the hot air nozzle 1, and the rotating drainage triangular pyramid 6 can disturb the flow direction of the hot air, so that the hot air in the hot air nozzle 1 forms a turbulent flow, and the hot air in the center and the periphery is further uniformly mixed.
The first air bag 12 is positioned outside the drainage triangular pyramid 6, and the second air bag 14 is positioned inside the drainage triangular pyramid 6, so that the first air bag 12 senses the temperature outside the drainage triangular pyramid 6, and the second air bag 14 senses the temperature inside the drainage triangular pyramid 6;
when the temperature inside the drainage triangular pyramid 6 is lower than the temperature outside, the pressure in the first air bag 12 is higher than the pressure in the second air bag 14, the piston in the cylinder 13 moves towards the direction in the second air bag 14, and the piston drives the piston rod to move towards the direction away from the slideway 9, so that the moving rod 15 attached to the inner side wall of the drainage triangular pyramid 6 moves towards the direction away from the vertex of the drainage triangular pyramid 6, the diversion holes 16 on the moving rod 15 are gradually staggered with the opening 8, the exposed area of the opening 8 is reduced, so that the ambient hot air is reduced to be blown to the central position in the hot air nozzle 1 through the opening 8, less ambient hot air with low temperature is mixed with the central hot air with high temperature, and the temperature inside the drainage triangular pyramid 6 is gradually increased; when the moving rod 15 moves towards the direction away from the top of the drainage triangular pyramid 6, one end of the moving rod 15 extending into the slideway 9 gradually leaves the slideway 9 along the channel 10, the compressed spring does not have the pressure of the moving rod 15, the stop block 11 can be pushed to move outwards of the slideway 9, and the central hot air is reduced to be blown to the peripheral position in the hot air nozzle 1 through the side face of the drainage triangular pyramid 6, so that the temperature outside the drainage triangular pyramid 6 is gradually reduced.
When the temperature inside the drainage triangular pyramid 6 is higher than the temperature outside, the pressure inside the second air bag 14 is higher than the pressure inside the first air bag 12, the piston inside the cylinder 13 moves towards the direction inside the first air bag 12, the piston drives the piston rod to move towards the slideway 9, so that the moving rod 15 attached to the inner side wall of the drainage triangular pyramid 6 moves towards the vertex of the drainage triangular pyramid 6, the moving rod 15 always keeps the spring in a compressed state, the diversion hole 16 on the moving rod 15 gradually coincides with the opening 8, the exposed area of the opening 8 is increased, so that hot air around is blown to the central position inside the hot air nozzle 1 through the opening 8, more hot air with low temperature around enters the center, and is mixed with hot air with high central temperature, so that the temperature of hot air in the center is reduced, and the temperature inside the drainage triangular pyramid 6 is gradually reduced; when the piston moves towards the first air bag 12, the first air bag 12 is gradually inflated, and as the first air bag 12 is fixedly connected to the drainage triangular pyramid 6, the inflated air bag extrudes the stop block 11 to move into the slideway 9, so that more central hot air is blown to the peripheral position in the hot air nozzle 1 through the side surface of the drainage triangular pyramid 6, the temperature outside the drainage triangular pyramid 6 is gradually increased, and the temperature inside and outside the drainage triangular pyramid 6 reaches a dynamic balance state.
The third air bag 17 aims to sense the temperature in the drainage triangular pyramid 6, when the temperature in the drainage triangular pyramid 6 is too high, the expanded third air bag 17 can downwards press the bottom plate 62, gaps between the sealing strips 611 of the elastic body 61 are increased under the pressing of the first air bag 12, heat dissipation in the drainage triangular pyramid 6 is accelerated, the temperature of the drainage triangular pyramid 6 is self-regulated by sensing the temperature by the third air bag 17, and the phenomenon that the temperature difference between the inside and the outside of the drainage triangular pyramid 6 is too large to cause uneven hot air blown out of an air outlet is avoided. The whole of the drainage triangular pyramid 6 formed by the elastic body 61 and the bottom plate 62 not only can play roles in guiding hot air and changing the wind direction, but also can blow the hot air to the chip through small gaps among the sealing strips 611 of the drainage triangular pyramid 6.
The slide 9 in this embodiment is located the outer end of drainage triangular pyramid 6 and inclines to the bottom surface direction of drainage triangular pyramid 6, and the baffle in the slide 9 also inclines towards the bottom surface direction of drainage triangular pyramid 6, and the hot-blast of central point put in the hot-blast nozzle 1 can blow around along the baffle better, and the baffle can play better guide effect.
The foregoing is merely exemplary embodiments of the present invention, and specific structures and features that are well known in the art are not described in detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present invention, and these should also be considered as the scope of the present invention, which does not affect the effect of the implementation of the present invention and the utility of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (3)
1. The repair table heating system comprises a heater and a hot air nozzle, wherein an air outlet is formed at the hot air nozzle; the method is characterized in that:
a supporting shaft is fixedly connected in the hot air nozzle, a driving bevel gear is rotationally connected on the supporting shaft, a fan blade is fixedly connected on one side of the driving bevel gear, a hollow rotating shaft is rotationally connected in the hot air nozzle, a driven bevel gear meshed with the driving bevel gear is coaxially fixedly connected on the rotating shaft, a drainage triangular pyramid is fixedly connected on the rotating shaft at the lower side of the driven bevel gear, and the rotating shaft penetrates through the vertex of the drainage triangular pyramid and stretches into the drainage triangular pyramid;
the three side surfaces of the drainage triangular pyramid are respectively provided with a through hole and a plurality of openings, the through holes are close to the vertexes of the drainage triangular pyramid, and the bottom surface of the drainage triangular pyramid is hollowed out;
the drainage triangular pyramid is internally provided with a slideway communicated with the through hole and a channel penetrating through the slideway, a stop block which can extend out of the drainage triangular pyramid is connected in a sliding manner in the slideway, a spring is arranged between one side of the stop block extending into the drainage triangular pyramid and the bottom wall of the slideway, and a first air bag which can be in contact with the stop block is fixedly connected outside the drainage triangular pyramid;
the drainage triangular pyramid is internally provided with a cylinder body, a piston is hermetically sealed in the cylinder body, one side of the cylinder body close to the opening is communicated with a second air bag, the first air bag is communicated with one side of the cylinder body close to the slideway, a piston rod is arranged on the piston, one end of the piston rod extending out of the cylinder body is connected with a Z-shaped movable rod, one end of the movable rod penetrates through a channel and extends into a spring in the slideway, the other end of the movable rod is attached to the inner side wall of the drainage triangular pyramid, one side of the movable rod close to the opening is provided with a diversion hole, the diversion hole can be overlapped or staggered with the opening,
the drainage triangular pyramid comprises an integrated elastic body formed by spirally stacking sealing strips from bottom to top and a bottom plate in sliding connection with the bottom of the elastic body, wherein the elastic body and the bottom plate are enclosed to form the drainage triangular pyramid, the elastic body is three side surfaces of the drainage triangular pyramid, the bottom plate is the bottom surface of the drainage triangular pyramid,
a third air bag is fixedly connected on the inner side wall of the triangular pyramid and can be contacted with the bottom plate,
the opening and the through hole are formed in the sealing strip.
2. The rework station heating system of claim 1, wherein: the outer end of the slide way positioned on the drainage triangular pyramid is inclined towards the bottom surface direction of the drainage triangular pyramid.
3. The rework station heating system of claim 1, wherein: the openings are uniformly arranged along the length direction of each side surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810617865.0A CN108541147B (en) | 2018-06-15 | 2018-06-15 | Repair table heating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810617865.0A CN108541147B (en) | 2018-06-15 | 2018-06-15 | Repair table heating system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108541147A CN108541147A (en) | 2018-09-14 |
| CN108541147B true CN108541147B (en) | 2023-12-22 |
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| CN201810617865.0A Active CN108541147B (en) | 2018-06-15 | 2018-06-15 | Repair table heating system |
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| CN112033000A (en) * | 2020-09-10 | 2020-12-04 | 浪潮商用机器有限公司 | Hot air gun hot air guiding device and multi-pin chip dismounting hot air gun |
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| CN208273373U (en) * | 2018-06-15 | 2018-12-21 | 重庆合聚达智能装备有限公司 | rework station heating system |
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