CN108608650B - 3D printing consumable welding device and welding method thereof - Google Patents
3D printing consumable welding device and welding method thereof Download PDFInfo
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- CN108608650B CN108608650B CN201810510237.2A CN201810510237A CN108608650B CN 108608650 B CN108608650 B CN 108608650B CN 201810510237 A CN201810510237 A CN 201810510237A CN 108608650 B CN108608650 B CN 108608650B
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- 238000003466 welding Methods 0.000 title claims abstract description 36
- 238000010146 3D printing Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 56
- 238000003825 pressing Methods 0.000 claims abstract description 30
- 238000001125 extrusion Methods 0.000 claims abstract description 26
- 238000007639 printing Methods 0.000 claims abstract description 7
- 230000006835 compression Effects 0.000 claims description 16
- 238000007906 compression Methods 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 12
- 239000003990 capacitor Substances 0.000 claims description 6
- 238000005056 compaction Methods 0.000 claims description 6
- 230000000087 stabilizing effect Effects 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 5
- 238000009423 ventilation Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 4
- 230000017525 heat dissipation Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- -1 feeding Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/69—General aspects of joining filaments
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
The invention discloses a 3D printing consumable welding device and a welding method thereof. After one-time printing is finished, if the residual quantity of printing consumables is smaller, the remaining section cannot be used due to insufficient materials in the second use, so that a large amount of waste is caused. The invention relates to a device for simply and conveniently welding 3D printing consumables, which comprises a first main body block, a second main body block, a first roller, a second roller, a first heat conduction block, a second heat conduction block, a first extrusion spring, a second extrusion spring, a first wheel shaft, a second wheel shaft, a heat dissipation fan, a heat transfer block, a pressing block, a heating rod and a heating reset spring. The first main body block is hinged with one side edge of the inner side surface of the second main body block. A first wire groove is formed in the inner side face of the first main body block. A second wire groove is formed in the inner side face of the second main body block. The invention can finish the welding of two rolls of 3D printing consumables, and the welding temperature is controllable, so that the invention can be suitable for different types of 3D printing consumables.
Description
Technical Field
The invention belongs to the technical field of 3D printing, and particularly relates to a 3D printing consumable welding device and a welding method thereof.
Background
At present, the following conditions occur in the 3D printing consumables in use, so that the waste of materials and the consumption of energy are caused: 1. as a result of various accidents, printing is suspended, and a large amount of printing consumables are discarded due to insufficient usage. 2. After one-time printing is finished, if the residual quantity of printing consumables is smaller, the remaining section cannot be used due to insufficient materials in the second use, so that a large amount of waste is caused. 3. Every time when changing the consumptive material all need carry out complicated material, feeding, waste time and energy. In such a background, it is important to design a welding device that enables a roll of 3D printing consumables to be used with a small residual amount.
Disclosure of Invention
The invention aims to provide a 3D printing consumable welding device and a welding method thereof.
The invention relates to a 3D printing consumable welding device which comprises a first main body block, a second main body block, a first roller, a second roller, a first heat conduction block, a second heat conduction block, a first extrusion spring, a second extrusion spring, a first wheel shaft, a second wheel shaft, a heat dissipation fan, a heat transfer block, a pressing block, a heating rod and a heating reset spring. The first main body block is hinged with one side edge of the inner side surface of the second main body block. A first wire groove is formed in the inner side face of the first main body block. A second wire groove is formed in the inner side face of the second main body block. The two end parts of the first wire rod groove are respectively communicated with the two end surfaces of the first main body block. And two ends of the second wire rod groove are respectively communicated with two end surfaces of the second main body block. The middle part of first main part piece lateral surface has seted up the heating tank. The heating groove is communicated with the middle part of the first wire groove. The first heat conduction block is fixed with the heating groove. The first heat conducting block is provided with a first heat conducting groove. The cross-sectional shape of the first heat conduction groove is the same as the cross-sectional shape of the first wire groove.
The heat transfer block and the heating groove form a sliding pair. A heating rod is fixed in the heat transfer block. One end of each of the two heating reset springs is fixed with the heat transfer block, and the other end of each of the two heating reset springs is fixed with the first main body block. The heat transfer block is fixed with the inner end of the pressing block.
The outer side face of the first main body block is also provided with a first compression groove. The bottom of the first compaction groove is communicated with the first wire groove. A first wheel shaft is arranged in the first compression groove. The first wheel axle and the first compression groove form a sliding pair. The two ends of the first wheel axle are respectively fixed with one ends of the two first extrusion springs. The other ends of the two first extrusion springs are fixed with the first main body block. The middle part of the first wheel axle supports a first roller.
A fan groove is formed in the middle of the outer side face of the second main body block. The fan groove is communicated with the middle part of the second wire groove. The second heat conducting block is fixed with the bottom of the fan groove. The second heat conducting block is provided with a second heat conducting groove. The cross-sectional shape of the second heat conduction groove is the same as the cross-sectional shape of the second wire groove. A cooling fan is arranged in the fan groove.
The outer side face of the second main body block is also provided with a second compression groove. The second compaction groove is communicated with the second wire groove. The second compression groove is internally provided with a second wheel shaft. The second wheel axle and the second compression groove form a sliding pair. Two ends of the second wheel axle are respectively fixed with one ends of the two second extrusion springs. The other ends of the two second extrusion springs are fixed with the second main body block. The middle part of the second wheel axle supports a second roller.
Further, the 3D printing consumable welding device further comprises a control circuit. The control circuit comprises an amplifier and a thermistor R8. The thermistor R8 is a negative temperature coefficient thermistor. The positive power supply voltage of the amplifier is connected with external 12V voltage, the negative power supply voltage is connected with the ground, and the non-inverting input terminal of the amplifier is connected with one end of the first resistor R1 and one end of the thermistor R8. The other end of the thermistor R8 is grounded. The other end of the first resistor R1 is connected with a first fixed terminal of the potentiometer R7 and an external 12V voltage. The inverting input of the amplifier U1 is connected with the rotating terminal of the potentiometer R7. The second fixed connection of the potentiometer R7 is grounded. The output end of the potentiometer R7 is connected with one end of the second resistor R2 and one end of the capacitor C1. The other ends of the second resistor R2 and the capacitor C1 are connected with the negative electrode of the voltage stabilizing tube D1 and the base electrode of the triode. The emitter of the triode and the anode of the voltage stabilizing tube are grounded. The collector of the triode is connected with one end of a coil of the relay. The other end of the relay coil is connected with one end of the third resistor R3. The other end of the third resistor R3 is connected with external 5V voltage. One contact in the relay is connected with external 12V voltage, and the other contact is connected with one power supply line of the heating rod. The other power supply line of the heating rod is grounded. The thermistor is fixed in the heating groove of the first main body block.
Further, the 3D printing consumable welding device further comprises a lock catch. The lock catch comprises a movable locking piece and a fixed locking piece. The fixed locking piece is fixed on the first main body block. The movable locking piece and the second main body block form a transmission pair.
Further, two first extrusion springs are arranged on one side, away from the inner side surface of the first main body block, of the first wheel shaft. The two second extrusion springs are arranged on one side, far away from the inner side surface of the second main body block, of the second wheel shaft.
Further, the middle part at the edge of the first roller is concavely arranged. The axis of the first wire groove is in the symmetrical plane of the two side surfaces of the first roller. The middle part at the edge of the second roller is concavely arranged. The axis of the second wire groove is in the symmetrical plane of the two side surfaces of the second roller. The first roller and the second roller are aligned in the axial direction of the first wire groove.
Further, in a state where the pressing block is not pressed, the heat transfer block is separated from the first heat transfer block. The heat transfer block is in contact with the first heat transfer block in a state in which the pressing block is pressed.
Further, the first main body block is provided with a threading hole and a ventilation hole. The inner ends of the threading holes and the ventilation holes are communicated with the side wall of the heating groove. The first main body block is embedded with two heat insulation boards. The two heat insulation plates are respectively arranged at two sides of the heat transfer block and are close to the contact position of the heat transfer block and the first main body block.
Further, the intersection line of the inner side surfaces of the first main body block and the second main body block coincides with the axis of the hinge shaft of the first main body block and the axis of the hinge shaft of the second main body block.
Further, the cross section shape of the first wire groove and the cross section shape of the second wire groove are in the same semicircle shape. The first wire groove and the second wire groove are equal to the distance between the first main body block and the hinge shaft axis of the second main body block. The axis of the first heat conduction groove coincides with the axis of the first wire groove. The axis of the second heat conduction groove coincides with the axis of the second wire groove.
The welding method of the 3D printing consumable welding device specifically comprises the following steps:
Step one, if the voltage value of the non-inverting input end in the amplifier is larger than or equal to the voltage value of the inverting input end, the output end of the amplifier outputs a high level, so that the triode is conducted, the heating rod begins to heat, and the temperature of the heat transfer block is increased. If the voltage value of the non-inverting input end in the amplifier is smaller than the voltage value of the inverting input end, the output end of the amplifier outputs a low level, so that the triode is cut off, and the heating rod stops heating.
And secondly, placing the tail end of the first consumable to be connected onto the second heat conduction groove, and enabling the first consumable to be connected to contact with the second roller.
And thirdly, attaching the inner side surfaces of the first main body block and the second main body block. The first to-be-connected consumable is embedded between the first wire groove and the second wire groove and is pressed by the first roller and the second roller.
And fourthly, penetrating the head end of the second consumable to be connected from the ends of the first wire groove and the second wire groove, which are far away from the first roller and the second roller, until the head end of the second consumable to be connected contacts with the tail end of the first consumable to be connected.
And fifthly, pressing the pressing block to enable the temperature of the heat transfer block to be transferred to the first heat conduction block and the second heat conduction block. The first heat conduction block and the second heat conduction block which are heated are used for welding the tail end of the first consumable to be connected with the head end of the second consumable to be connected.
And step six, after the pressing block is pressed for 8 to 20 seconds, the pressing block is loosened, and the cooling fan is started, so that the temperatures of the first heat conduction block and the second heat conduction block are quickly reduced. Step seven is then entered.
And step seven, the cooling fan is turned off, if the tail end of the first consumable to be connected and the head end of the second consumable to be connected are not welded together, the electric brush of the potentiometer is rotated, so that the voltage value of the inverting input end in the amplifier is reduced, and the steps two to six are repeatedly executed.
If the tail end of the first consumable to be connected and the head end of the second consumable to be connected are welded together but high-temperature damage occurs, the electric brush of the potentiometer is rotated, so that the voltage value of the reverse phase input end in the amplifier is increased, the damaged parts of the first consumable to be connected and the second consumable to be connected are cut off, and the steps two to six are repeatedly executed.
If the tail end of the first consumable to be connected and the head end of the second consumable to be connected are welded together and high-temperature damage does not occur, the welding is finished.
The invention has the beneficial effects that:
1. The invention can finish the welding of two rolls of 3D printing consumables, and the welding temperature is controllable, so that the invention can be suitable for different types of 3D printing consumables.
2. According to the invention, the welding is finished when the pressing block is pressed down and the pressing block is released, so that the welding time can be effectively controlled.
3. According to the invention, the heat insulation plate enables high temperature to be concentrated at the welding position, so that the welding efficiency is improved, and the safety of a user is ensured.
4. The cooling fan can realize rapid cooling after the 3D printing consumable is welded, so that the 3D printing consumable can be rapidly cooled and molded.
Drawings
FIG. 1 is a schematic view of a first overall structure of the present invention;
FIG. 2 is a schematic diagram of a second overall structure of the present invention;
FIG. 3 is a schematic front view of the present invention;
FIG. 4 is a cross-sectional view of the present invention;
fig. 5 is a schematic circuit diagram of a control circuit according to the present invention.
Detailed Description
The invention is further described with reference to the second drawing.
As shown in fig. 1,2,3 and 4, a 3D printing consumable welding device includes a first main body block 1, a second main body block 2, a first roller 3, a second roller 4, a first heat conducting block 5, a second heat conducting block 6, a first extrusion spring, a second extrusion spring 7, a first wheel shaft, a second wheel shaft 16, a heat dissipating fan 8, a heat transferring block 9, a pressing block 10, a heating rod 11, a heating return spring 12, a lock catch, a heat insulating plate 15 and a control circuit. The first main body block 1 is hinged with one side edge of the inner side surface of the second main body block 2 through a hinge. The intersection line of the inner side surfaces of the first body block 1 and the second body block 2 coincides with the axis of the hinge shaft of the first body block 1 and the second body block 2. The lock catch comprises a movable lock piece 13 and a fixed lock piece 14. The locking member 14 is fixed to the first body block 1. The movable lock 13 and the second main body block 2 form a transmission pair. When the lock member 13 is rotated to lock the lock member 14 in a state where the first body block 1 is in contact with the inner side surface of the second body block 2, the first body block 1 and the second body block 2 are locked relatively.
The inner side surface of the first main body block 1 is provided with a first wire groove. A second wire groove is formed in the inner side surface of the second main body block 2. The cross section of the first wire groove and the cross section of the second wire groove are in the same semicircle shape. The two end parts of the first wire groove are respectively communicated with the two end surfaces of the first main body block 1. Both ends of the second wire groove are respectively communicated with the end surfaces of both ends of the second main body block 2. The first wire groove and the second wire groove are equal to the distance between the first main body block 1 and the second main body block 2 in the axis of the hinge shaft. The middle part of the outer side surface of the first main body block 1 is provided with a heating groove. The bottom of the heating groove is communicated with the middle part of the first wire groove. The first heat conducting block 5 is fixed with the bottom of the heating tank. The first heat conduction block 5 is provided with a first heat conduction groove. The cross-sectional shape of the first heat conduction groove is the same as the cross-sectional shape of the first wire groove. The side surface of the first heat conduction groove is flush with the side surface of the first wire groove (namely, the axis of the first heat conduction groove coincides with the axis of the first wire groove). So that the wire can be guided into the first heat-conducting groove via the first wire groove.
The heat transfer block 9 and the heating groove form a sliding pair sliding along the normal direction of the inner side surface of the first main body block 1. A heating rod 11 is fixed inside the heat transfer block 9. One end of each of the two heating return springs 12 is fixed with the heat transfer block 9, and the other end is fixed with the bottom of the heating groove. The side of the heat transfer block 9 away from the first heat conduction block 5 is fixed to the inner end of the pressing block 10. The outer end of the pressing block 10 extends out of the heating groove. In a state where the pressing block 10 is not pressed down, the heat transfer block 9 is separated from the first heat transfer block 5 by the elastic force of the heating return spring 12. In a state where the pressing block 10 is pressed down, the heat transfer block 9 is in contact with the first heat conduction block 5, so that the heat generated by the heating rod 11 is directly transferred to the first heat conduction block 5. The first main body block 1 is provided with a threading hole 16 and a ventilation hole 17. The inner ends of the threading hole 16 and the ventilation hole 17 are communicated with the side wall of the heating groove. The power supply line of the heating rod 11 is passed through the threading hole. The first body block 1 has two heat shields 15 embedded therein. Two heat insulating plates 15 are respectively arranged on two sides of the heat transfer block 9 and are close to the contact position of the heat transfer block 9 and the first main body block 1.
The outer side surface of the first main body block 1 is also provided with a first compression groove. The bottom of the first compaction groove is communicated with the first wire groove. A first wheel shaft is arranged in the first compression groove. The first wheel axle and the first pressing groove form a sliding pair sliding along the normal direction of the inner side surface of the first main body block 1. The two ends of the first wheel axle are respectively fixed with one ends of the two first extrusion springs. The other ends of the two first extrusion springs are fixed with the first main body block 1. The two first extrusion springs are arranged on one side of the first wheel shaft far away from the inner side surface of the first main body block 1. The middle part of the first wheel axle supports a first roller 3. The middle part of the edge of the first roller 3 is concavely arranged (i.e. is U-shaped wheel-shaped). The axis of the first wire groove is in the symmetrical plane of the two side surfaces of the first roller 3.
A fan groove is formed in the middle of the outer side face of the second main body block 2. The bottom of the fan groove is communicated with the middle part of the second wire groove. The second heat conducting block 6 is fixed with the bottom of the fan groove. The second heat conducting block 6 is provided with a second heat conducting groove. The cross-sectional shape of the second heat conduction groove is the same as the cross-sectional shape of the second wire groove. The side surface of the second heat conduction groove is flush with the side surface of the second wire groove (namely, the axis of the second heat conduction groove coincides with the axis of the second wire groove). So that the wire can be led into the second heat conducting slot via the second wire slot. A cooling fan 8 is arranged in the fan groove.
The outer side surface of the second main body block 2 is also provided with a second compression groove. The bottom of the second compaction groove is communicated with the second wire groove. The second compression groove is internally provided with a second wheel shaft. The second wheel axle and the second pressing groove form a sliding pair sliding along the normal direction of the inner side surface of the second main body block 2. Two ends of the second wheel axle are respectively fixed with one ends of the two second extrusion springs. The other ends of the two second extrusion springs are fixed with the second main body block 2. The two second extrusion springs are arranged on one side of the second wheel shaft far away from the inner side surface of the second main body block 2. The middle part of the second wheel axle supports a second roller 4. The middle part of the edge of the second roller 4 is concavely arranged (i.e. is U-shaped wheel-shaped). The axis of the second wire groove is in the symmetrical plane of the two side surfaces of the second roller 3. The first roller 3 is aligned with the second roller 4 in the axial direction of the first wire groove.
As shown in fig. 5, the control circuit includes an amplifier U1 and a thermistor R8. The amplifier U1 employs an operational amplifier of model UA 741. The thermistor R8 is a negative temperature coefficient thermistor. The positive supply voltage of the amplifier U1 is connected with external 12V voltage, the negative supply voltage is grounded, and the non-inverting input end (3 pins) is connected with one end of the first resistor R1 and one end of the thermistor R8. The other end of the thermistor R8 is grounded. The other end of the first resistor R1 is connected to a first fixed terminal (one end of the resistor) of the potentiometer R7 and an external 12V voltage. The inverting input (2 pins) of the amplifier U1 is connected to the rotating terminal (brush) of the potentiometer R7. The second fixed terminal (the other end of the resistor) of the potentiometer R7 is grounded. The output end of the potentiometer R7 is connected with one end of the second resistor R2 and one end of the capacitor C1. The other ends of the second resistor R2 and the capacitor C1 are connected with the negative electrode of the voltage stabilizing tube D1 and the base electrode of the triode Q1. The emitter of the triode Q1 and the positive electrode of the voltage stabilizing tube D1 are grounded. The collector of the triode Q1 is connected with one end of a coil of the relay K1. The other end of the coil of the relay K1 is connected with one end of the third resistor R3. The other end of the third resistor R3 is connected with external 5V voltage. One contact in the relay K1 is connected with external 12V voltage, and the other contact is connected with one power supply line of the heating rod 11. The other power supply line of the heating rod 11 is grounded. The thermistor R8 is fixed in the heating tank of the first body block 1.
The welding method of the 3D printing consumable welding device specifically comprises the following steps:
Step one, electrifying a control circuit. If the voltage value of the non-inverting input end in the amplifier U1 is greater than or equal to the voltage value of the inverting input end, the output end of the amplifier U1 outputs a high level, so that the triode Q1 is conducted, the heating rod begins to heat, and the temperature of the heat transfer block 9 is increased. If the voltage value of the non-inverting input end in the amplifier U1 is smaller than the voltage value of the inverting input end, the output end of the amplifier U1 outputs a low level, so that the triode Q1 is cut off, and the heating rod stops heating.
And secondly, unlocking the lock catch, placing the tail end of the first consumable to be connected onto the second heat conduction groove, and enabling the first consumable to be connected to be in contact with the second roller 4. The first consumable to be connected is a 3D printing consumable which is used or needs to be used but is short in length.
And thirdly, attaching the inner side surfaces of the first main body block and the second main body block. The first to-be-connected consumable is embedded between the first wire groove and the second wire groove and is pressed by the first roller and the second roller. The user buckles the lock catch, so that the first main body block and the second main body block are relatively fixed.
And fourthly, penetrating the head end of the second consumable to be connected from the ends of the first wire groove and the second wire groove, which are far away from the first roller and the second roller, until the head end of the second consumable to be connected contacts with the tail end of the first consumable to be connected.
Step five, pressing the pressing block 10 so that the temperature of the heat transfer block is transferred to the first heat conduction block 5 and the second heat conduction block 6. The first heat conduction block 5 and the second heat conduction block 6 which are heated up weld the tail end of the first consumable to be connected with the head end of the second consumable to be connected.
Step six, after the pressing block 10 is pressed for 10 seconds, the pressing block 10 is loosened, and the cooling fan is started, so that the temperatures of the first heat conduction block 5 and the second heat conduction block 6 are rapidly reduced, and the welding part of the first consumable to be connected and the second consumable to be connected is cooled and solidified. Step seven is then entered.
And step seven, the cooling fan is turned off, the lock catch is opened, and the first consumable to be connected and the second consumable to be connected are taken out. If the tail end of the first consumable to be connected and the head end of the second consumable to be connected are not welded together, the electric brush of the potentiometer R7 is rotated, so that the voltage value of the reverse phase input end in the amplifier U1 is reduced, the temperature of the heat transfer block is increased under the action of the heating rod, and the steps two to six are repeatedly executed.
If the tail end of the first consumable to be connected and the head end of the second consumable to be connected are welded together but damaged due to overhigh temperature (blacking or cavity generation in the consumable), the electric brush of the potentiometer R7 is rotated, so that the voltage value of the reverse phase input end in the amplifier U1 is increased, the temperature of the heat transfer block is reduced under the action of the heating rod, the damaged parts of the first consumable to be connected and the second consumable to be connected are cut off, and the steps two to six are repeatedly executed.
If the tail end of the first consumable to be connected and the head end of the second consumable to be connected are welded together and are not damaged, the welding is finished.
Claims (8)
1. A3D printing consumable welding device comprises a first main body block, a second main body block, a first roller, a second roller, a first heat conduction block, a second heat conduction block, a first extrusion spring, a second extrusion spring, a first wheel shaft, a second wheel shaft, a cooling fan, a heat transfer block, a pressing block, a heating rod and a heating reset spring; the method is characterized in that: the first main body block is hinged with one side edge of the inner side surface of the second main body block; the inner side surface of the first main body block is provided with a first wire groove; a second wire groove is formed in the inner side surface of the second main body block; the two end parts of the first wire rod groove are respectively communicated with the two end surfaces of the first main body block; the two ends of the second wire rod groove are respectively communicated with the end surfaces of the two ends of the second main body block; a heating groove is formed in the middle of the outer side face of the first main body block; the heating groove is communicated with the middle part of the first wire groove; the first heat conduction block is fixed with the heating groove; the first heat conducting block is provided with a first heat conducting groove; the cross section shape of the first heat conduction groove is the same as that of the first wire groove;
The heat transfer block and the heating groove form a sliding pair; a heating rod is fixed in the heat transfer block; one end of each of the two heating reset springs is fixed with the heat transfer block, and the other end of each of the two heating reset springs is fixed with the first main body block; the heat transfer block is fixed with the inner end of the pressing block;
The outer side surface of the first main body block is also provided with a first compression groove; the bottom of the first compaction groove is communicated with the first wire groove; a first wheel shaft is arranged in the first compression groove; the first wheel shaft and the first compression groove form a sliding pair; two ends of the first wheel axle are respectively fixed with one ends of two first extrusion springs; the other ends of the two first extrusion springs are fixed with the first main body block; the middle part of the first wheel axle is supported with a first roller;
a fan groove is formed in the middle of the outer side face of the second main body block; the fan groove is communicated with the middle part of the second wire groove; the second heat conducting block is fixed with the bottom of the fan groove; the second heat conducting block is provided with a second heat conducting groove; the cross section shape of the second heat conduction groove is the same as that of the second wire groove; a cooling fan is arranged in the fan groove;
The outer side surface of the second main body block is also provided with a second compression groove; the second compaction groove is communicated with the second wire groove; a second wheel shaft is arranged in the second compression groove; the second wheel shaft and the second compression groove form a sliding pair; two ends of the second wheel axle are respectively fixed with one ends of two second extrusion springs; the other ends of the two second extrusion springs are fixed with the second main body block; the middle part of the second wheel shaft is supported with a second roller;
The control circuit is also included; the control circuit comprises an amplifier and a thermistor R8; the thermistor R8 adopts a negative temperature coefficient thermistor; the positive power supply voltage of the amplifier is connected with external 12V voltage, the negative power supply voltage is connected with the ground, and the non-inverting input terminal of the amplifier is connected with one end of the first resistor R1 and one end of the thermistor R8; the other end of the thermistor R8 is grounded; the other end of the first resistor R1 is connected with a first fixed terminal of the potentiometer R7 and an external 12V voltage; the inverting input end of the amplifier is connected with the rotating terminal of the potentiometer R7; the second fixed wiring of the potentiometer R7 is grounded; the output end of the potentiometer R7 is connected with one end of the second resistor R2 and one end of the capacitor C1; the other ends of the second resistor R2 and the capacitor C1 are connected with the negative electrode of the voltage stabilizing tube D1 and the base electrode of the triode; the emitter of the triode and the anode of the voltage stabilizing tube are grounded; one end of a coil of a relay is connected with a collector electrode of the triode; the other end of the relay coil is connected with one end of a third resistor R3; the other end of the third resistor R3 is connected with external 5V voltage; one contact in the relay is connected with external 12V voltage, and the other contact is connected with one power supply line of the heating rod; the other power supply line of the heating rod is grounded; the thermistor is fixed in the heating groove of the first main body block;
The device also comprises a lock catch; the lock catch comprises a movable locking piece and a fixed locking piece; the fixed locking piece is fixed on the first main body block; the movable locking piece and the second main body block form a transmission pair.
2. The 3D printing consumable fusing apparatus of claim 1, wherein: the two first extrusion springs are arranged on one side, far away from the inner side surface of the first main body block, of the first wheel shaft; the two second extrusion springs are arranged on one side, far away from the inner side surface of the second main body block, of the second wheel shaft.
3. The 3D printing consumable fusing apparatus of claim 1, wherein: the middle part of the edge of the first roller is concavely arranged; the axis of the first wire groove is in the symmetrical plane of the two side surfaces of the first roller; the middle part of the edge of the second roller is concavely arranged; the axis of the second wire groove is in the symmetrical plane of the two side surfaces of the second roller; the first roller and the second roller are aligned in the axial direction of the first wire groove.
4. The 3D printing consumable fusing apparatus of claim 1, wherein: the heat transfer block is separated from the first heat conduction block in a state that the pressing block is not pressed down; the heat transfer block is in contact with the first heat transfer block in a state in which the pressing block is pressed.
5. The 3D printing consumable fusing apparatus of claim 1, wherein: the first main body block is provided with a threading hole and a ventilation hole; the inner end of the threading hole and the vent hole are communicated with the side wall of the heating groove; two heat insulation boards are embedded in the first main body block; the two heat insulation plates are respectively arranged at two sides of the heat transfer block and are close to the contact position of the heat transfer block and the first main body block.
6. The 3D printing consumable fusing apparatus of claim 1, wherein: and the intersection line of the inner side surfaces of the first main body block and the second main body block coincides with the axis of the hinge shaft of the first main body block and the hinge shaft of the second main body block.
7. The 3D printing consumable fusing apparatus of claim 1, wherein: the cross section of the first wire groove and the cross section of the second wire groove are in the same semicircle shape; the first wire groove and the second wire groove are equal to the distance between the first main body block and the axis of the hinge shaft of the second main body block; the axis of the first heat conduction groove is coincident with the axis of the first wire groove; the axis of the second heat conduction groove coincides with the axis of the second wire groove.
8. The welding method of a 3D printing consumable welding device according to claim 1, wherein: step one, if the voltage value of the in-phase input end in the amplifier is larger than or equal to the voltage value of the reverse-phase input end, the output end of the amplifier outputs a high level, so that the triode is conducted, the heating rod begins to heat, and the temperature of the heat transfer block is increased; if the voltage value of the non-inverting input end in the amplifier is smaller than the voltage value of the inverting input end, the output end of the amplifier outputs a low level, so that the triode is cut off, and the heating rod stops heating;
Placing the tail end of the first consumable to be connected onto the second heat conduction groove, and enabling the first consumable to be connected to contact with the second roller;
Thirdly, attaching the inner side surfaces of the first main body block and the second main body block; the first consumable to be connected is embedded between the first wire groove and the second wire groove and is pressed by the first roller and the second roller;
Penetrating the head end of the second consumable to be connected from the ends of the first wire groove and the second wire groove, which are far away from the first roller and the second roller, until the head end of the second consumable to be connected contacts with the tail end of the first consumable to be connected;
step five, pressing down the pressing block to enable the temperature of the heat transfer block to be transferred to the first heat conduction block and the second heat conduction block; the heated first heat conduction block and the heated second heat conduction block weld the tail end of the first consumable to be connected with the head end of the second consumable to be connected;
Step six, after the pressing block is pressed for 8 to 20 seconds, the pressing block is loosened, and the cooling fan is started, so that the temperatures of the first heat conduction block and the second heat conduction block are quickly reduced; then, entering a step seven;
Step seven, the cooling fan is turned off, if the tail end of the first consumable to be connected and the head end of the second consumable to be connected are not welded together, the electric brush of the potentiometer is rotated, so that the voltage value of the inverting input end in the amplifier is reduced, and the steps two to six are repeatedly executed;
If the tail end of the first consumable to be connected and the head end of the second consumable to be connected are welded together but high-temperature damage occurs, the electric brush of the potentiometer is rotated, so that the voltage value of the reverse phase input end in the amplifier is increased, the damaged parts of the first consumable to be connected and the second consumable to be connected are cut off, and the steps two to six are repeatedly executed;
If the tail end of the first consumable to be connected and the head end of the second consumable to be connected are welded together and high-temperature damage does not occur, the welding is finished.
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| CN201810510237.2A CN108608650B (en) | 2018-05-24 | 2018-05-24 | 3D printing consumable welding device and welding method thereof |
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| CN201810510237.2A CN108608650B (en) | 2018-05-24 | 2018-05-24 | 3D printing consumable welding device and welding method thereof |
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| CN112157912A (en) * | 2020-09-22 | 2021-01-01 | 铭镭激光智能装备（河源）有限公司 | 3D printing consumables butt fusion tool |
| CN112895430B (en) * | 2021-01-14 | 2023-09-29 | 芜湖市爱三迪电子科技有限公司 | Connecting device for 3D printer consumable |
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| KR101859368B1 (en) * | 2016-12-13 | 2018-05-21 | 주식회사 3디나라 | Filament connector |
| CN208529767U (en) * | 2018-05-24 | 2019-02-22 | 浙江水利水电学院 | A kind of 3D printing consumptive material fusion splicing devices |
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| JP2003326603A (en) * | 2002-03-08 | 2003-11-19 | Sintokogio Ltd | Heating device for thermoplastic resin molding |
| KR101859368B1 (en) * | 2016-12-13 | 2018-05-21 | 주식회사 3디나라 | Filament connector |
| CN106626365A (en) * | 2016-12-27 | 2017-05-10 | 湖北工业大学 | Online print material fusion device for 3D printer |
| CN206968001U (en) * | 2017-03-23 | 2018-02-06 | 西京学院 | A kind of 3D printer wire rod fusion splicing devices |
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