CN115110132A - Carriage electrophoretic coating device and carriage electrophoretic coating method - Google Patents
Carriage electrophoretic coating device and carriage electrophoretic coating method Download PDFInfo
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- CN115110132A CN115110132A CN202210787329.1A CN202210787329A CN115110132A CN 115110132 A CN115110132 A CN 115110132A CN 202210787329 A CN202210787329 A CN 202210787329A CN 115110132 A CN115110132 A CN 115110132A
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- 238000000576 coating method Methods 0.000 title claims abstract description 58
- 239000011248 coating agent Substances 0.000 title claims abstract description 41
- 239000003973 paint Substances 0.000 claims abstract description 33
- 238000001962 electrophoresis Methods 0.000 claims description 79
- 238000004070 electrodeposition Methods 0.000 claims description 23
- 239000004922 lacquer Substances 0.000 claims description 8
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 239000011810 insulating material Substances 0.000 claims description 6
- 230000013011 mating Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000005684 electric field Effects 0.000 abstract description 27
- 230000000694 effects Effects 0.000 abstract description 9
- 230000003139 buffering effect Effects 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 6
- 239000004020 conductor Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010422 painting Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 235000019241 carbon black Nutrition 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 235000010215 titanium dioxide Nutrition 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D13/00—Electrophoretic coating characterised by the process
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- Materials Engineering (AREA)
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- Organic Chemistry (AREA)
- Coating Apparatus (AREA)
Abstract
The invention provides a carriage electrophoretic coating device and a carriage electrophoretic coating method. The electric fields are formed at the top of the carriage and the bottom of the carriage, the two electric fields are overlapped, the uniformity of the electric field outside the carriage can be improved, charged electrophoretic paint can be uniformly adsorbed on the surface of the carriage, a paint film with uniform thickness is formed on the surface of the carriage, and the coating quality and effect of the carriage are effectively guaranteed. Meanwhile, the power is supplied to the bottom of the carriage through the conductive piece, so that the strength of an electric field outside the carriage can be enhanced, the speed of electrophoretic coating is effectively accelerated, the electrophoretic time is shortened, and the efficiency of electrophoretic coating of the carriage is improved. In addition, the conductive piece realizes buffering through the connecting piece, avoids rigid collision with a carriage with large volume and weight, avoids damage to the conductive piece and the bottom of the carriage, ensures the stability of the integral structure of the conductive piece and the carriage, and ensures that the conductive piece stably supplies power to the bottom of the carriage.
Description
Technical Field
The invention relates to the technical field of van manufacturing, in particular to a carriage electrophoretic coating device and a carriage electrophoretic coating method.
Background
The conventional dry type compartment wagon carriage coating process adopts oil paint spraying or water paint spraying, but with the tightening of national environmental protection policies and the tightening of VOC emission standards in recent years, dry type compartment wagon enterprises begin to use a more environment-friendly electrophoretic coating process to realize technology transformation and upgrading.
The basic principle of the cathode electrophoresis coating process is that a workpiece is negatively charged, an electrophoretic paint is positively charged, and the electrophoretic paint is adsorbed on the surface of the workpiece to form an electrophoretic paint film under the action of an electric field. At present, a carriage body to be coated is dragged to move by a travelling crane, an electric wire is led out from the travelling crane to supply negative electricity to the carriage body to be coated, and the general power supply position is arranged at the top of the carriage body to be coated.
However, the dry goods van has a large volume, and the electric field intensity gradually decreases with the increase of the distance, so that the electric field intensity at a position close to the power supply is high, and the electric field intensity at a position far away from the power supply is low, so that the problem that the adhesion force of the electrophoretic paint to a van body part far away from the power supply is low, and an effective paint film cannot be formed is caused. Meanwhile, the electric field intensity is not uniform, the electrophoresis time of large-sized workpieces is also increased, and the coating efficiency is low.
Disclosure of Invention
The invention aims to solve the technical problems of non-uniform electric field intensity, poor electrophoresis effect, non-uniform coating, long electrophoresis time and low coating efficiency in compartment electrophoretic coating in the prior art.
In order to solve the technical problem, the invention provides a carriage electrophoretic coating device which comprises an electrophoretic tank and at least one group of power supply components, wherein the top of the electrophoretic tank is provided with an opening, the inside of the electrophoretic tank is used for accommodating electrophoretic paint, a carriage to be coated is lifted to enter the electrophoretic tank from the opening of the electrophoretic tank through a travelling crane, the travelling crane is used for supplying power to the top of the carriage, each power supply component comprises a conductive piece and a connecting piece, and the conductive pieces are arranged inside the electrophoretic tank; the conductive piece is connected with an external power supply to supply power to the bottom of the carriage; the connecting piece is fixed with the conductive piece so that the conductive piece is in flexible contact with the bottom of the carriage.
Optionally, the power supply assembly further includes two connection pulleys, and the two connection pulleys are respectively fixed on two opposite inner side surfaces of the electrophoresis tank; the connecting piece is a rope made of an insulating material, one end of the rope is fixed on one side of the electrophoresis tank, the rope is wound on the two connecting pulleys, and the conductive piece is fixed on the part of the rope between the two connecting pulleys; and the height position of the other end of the rope is adjustable in the height direction of the electrophoresis tank.
Optionally, the electrophoresis tank includes a first side wall and a second side wall which are oppositely disposed, and one end of the rope is fixed to an inner side surface of the first side wall; the power supply assembly further comprises a balancing weight, the balancing weight is fixed to the other end of the rope, and the balancing weight is arranged outside the second side wall.
Optionally, the power supply assembly further includes a first transfer pulley, the first transfer pulley is vertically connected to the top end surface of the second side wall, a rotation axis of the first transfer pulley is parallel to the top end surface of the second side wall, and the rope is wound around the first transfer pulley.
Optionally, the power supply assembly further comprises a second switching pulley, the second switching pulley is vertically connected to the outer side surface of the second side wall, and the second switching pulley is arranged close to the top end of the second side wall; the rotating axis of the second switching pulley is parallel to the outer side face of the second side wall, and the connecting piece winds on the second switching pulley.
Optionally, the power supply assembly further includes a counterweight pipe made of an insulating material, the counterweight pipe is fixedly inserted into a portion of the rope between the two connecting pulleys, and the weight of the counterweight pipe is matched with the weight of the counterweight block so that the rope is kept in a tensioned state.
Optionally, two counterweight pipes are arranged on the rope at intervals; the power supply assembly comprises two conductive pieces, the conductive pieces are tubular, the conductive pieces are sleeved outside the two counterweight pipes respectively, and the conductive pieces are used for being in contact with the two longitudinal beams at the bottom of the carriage respectively.
Optionally, the counterweight pipe includes a fixing portion and a fitting portion connected to the fixing portion, and the fixing portion and the fitting portion form a T-shaped structure; the fixing part is provided with openings at two ends and is hollow inside, the rope is fixedly arranged in the fixing part in a penetrating mode, and the conductive piece is sleeved outside the fixing part.
Optionally, the connecting member is a spring, and the spring is arranged inside the electrophoresis tank; the bottom end of the spring is connected with the bottom of the electrophoresis tank, and the conductive piece is arranged at the top end of the spring so as to be in flexible contact with the bottom of the carriage.
Optionally, the car electrocoating device includes a plurality of sets of the power supply assemblies, and the plurality of sets of the power supply assemblies are arranged at intervals along the length direction of the electrophoresis tank.
The invention also provides a carriage electrophoretic coating method, which is realized by the carriage electrophoretic coating device and comprises the following steps: the carriage to be coated is drawn by the travelling crane to be immersed into the electrophoretic paint in the electrophoresis tank; the carriage descends in the electrophoresis tank and pushes against the conductive piece, and the conductive piece flexibly contacts the bottom of the carriage through the connecting piece; the carriage is kept at a set height position in the electrophoresis tank, the traveling crane supplies power to the top of the carriage, the conductive piece is electrified to supply power to the bottom of the carriage, so that the electrophoretic paint is adsorbed on the surface of the carriage to form a paint film; and after the coating of the carriage is finished, the travelling crane drives the carriage to move out of the electrophoresis tank.
According to the technical scheme, the beneficial effects of the invention are as follows: in the compartment electrophoretic coating device and the compartment electrophoretic coating method, the conductive piece can flexibly contact the bottom of the compartment through the connecting piece so as to supply power to the bottom of the compartment. The running vehicle is combined to supply power to the top of the carriage, electric fields are formed at the top of the carriage and the bottom of the carriage, and the two electric fields are superposed, so that the uniformity of the electric field outside the carriage can be improved. Under the effect of even electric field, the charged electrophoresis lacquer can adsorb on the surface in carriage uniformly, makes the top and the bottom in carriage all adsorb the electrophoresis lacquer to form the even film of thickness on the surface in carriage, guaranteed the quality and the effect of carriage application effectively. Meanwhile, the power is supplied to the bottom of the carriage through the conductive piece, so that the strength of an electric field outside the carriage can be enhanced, the speed of electrophoretic coating is effectively accelerated, the electrophoretic time is shortened, and the efficiency of electrophoretic coating of the carriage is improved. In addition, the conductive piece realizes buffering through the connecting piece, avoids rigid collision with a carriage with large volume and weight, avoids damage to the conductive piece and the bottom of the carriage, ensures the stability of the integral structure of the conductive piece and the carriage, and ensures that the conductive piece stably supplies power to the bottom of the carriage.
Drawings
Fig. 1 is a schematic structural diagram of a vehicle cabin electrocoating apparatus according to an embodiment of the invention.
Fig. 2 is a flowchart of an embodiment of the electrophoretic painting method for a vehicle cabin of the invention.
The reference numerals are explained below: 100. a carriage electrophoretic coating device; 10. an electrophoresis tank; 11. a first side wall; 12. a second side wall; 20. a power supply assembly; 21. a conductive member; 22. a rope; 231. a first connecting pulley; 232. a second connecting pulley; 24. a balancing weight; 251. a first transfer pulley; 252. a second switching pulley; 26. a counterweight pipe; 261. a fixed part; 262. a mating portion.
Detailed Description
Exemplary embodiments that embody features and advantages of the invention are described in detail below in the specification. It is to be understood that the invention is capable of other embodiments and that various changes in form and details may be made therein without departing from the scope of the invention and the description and drawings are to be regarded as illustrative in nature and not as restrictive.
In the description of the present application, it is to be understood that the indications of directions or positional relationships (such as up, down, left, right, front, rear, and the like) in the embodiments shown in the drawings are merely for convenience of description and simplicity of description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated. These descriptions are appropriate when the elements are in the positions shown in the drawings. If the description of the positions of these elements changes, the indication of these directions changes accordingly.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1, an embodiment of the present application provides a car electrocoating apparatus 100, which includes an electrocoating bath 10 and at least one set of power supply assemblies 20. The open-top and inside of electrophoresis tank 10 are used for holding the electrophoresis lacquer, and the carriage accessible handling of waiting to scribble gets into the inside of electrophoresis tank 10 by the opening of electrophoresis tank 10, and the driving can be to the top power supply in carriage.
The power supply assembly 20 includes a conductive member 21 and a connecting member. The conductive member 21 is disposed inside the electrophoresis tank 10 and near the bottom of the electrophoresis tank 10, and the conductive member 21 is electrified to generate an electric field. The connector is fixed to the conductive member 21 so that the conductive member 21 can flexibly contact the bottom of the vehicle compartment to supply power to the vehicle compartment.
In this embodiment, the electrophoresis tank 10 has a rectangular structure, and the top thereof is open. The electrophoresis tank 10 includes a first sidewall 11 and a second sidewall 12 disposed opposite to each other, and the first sidewall 11 and the second sidewall 12 extend in the same direction as the length direction of the electrophoresis tank 10.
The electrophoresis tank 10 contains an electrophoretic paint therein. The electrophoretic paint is a medium for electrophoretic painting, in which the object to be painted with electric conductivity is immersed in a relatively low-concentration electrophoretic paint tank filled with water to be used as an anode (or cathode), a cathode (or anode) corresponding to the electrophoretic paint tank 10 is additionally arranged in the electrophoretic paint tank, and after direct current is conducted between the two electrodes for a period of time, a uniform and fine coating film which is not dissolved by water is deposited on the surface of the object to be painted.
The principle of the cathode electrophoretic coating adopted by the embodiment is that a compartment to be coated is negatively charged, and electrophoretic paint is positively charged. Under the action of an electric field, the electrophoretic paint is adsorbed on the surface of the carriage, so that a paint film of the electrophoretic paint is formed on the surface of the carriage.
In this embodiment, the main material of the electrophoretic paint is epoxy resin, and the filler is one or a combination of titanium white, kaolin and carbon black. The solvent of the electrophoretic paint includes ethylene glycol butyl ether. In other examples of this embodiment, a negatively charged electrophoretic paint may also be used, and other components may be selected for the electrophoretic paint according to the actual coating requirements of the vehicle cabin.
The power supply assembly 20 of the present embodiment further includes two connection pulleys, which are a first connection pulley 231 and a second connection pulley 232, respectively.
Wherein, the first connection pulley 231 is fixed on the inner side of the first sidewall 11 of the electrophoresis tank 10, and the second connection pulley 232 is fixed on the inner side of the second sidewall 12 of the electrophoresis tank 10. The first connection pulley 231 and the second connection pulley 232 are both disposed near the bottom of the electrophoresis tank 10.
In the height direction of the electrophoresis tank 10, the height position of the first connection pulley 231 and the height position of the second connection pulley 232 are the same. The first connection pulley 231 is vertically connected to the inner side surface of the first sidewall 11, the second connection pulley 232 is vertically connected to the inner side surface of the second sidewall 12, and the rotation axis of the first connection pulley 231 and the rotation axis of the second connection pulley 232 are consistent with the length direction of the electrophoresis tank 10.
In this embodiment, the connecting member is a rope 22, and the rope 22 is made of an insulating material. The inner side surface of the first side wall 11 is provided with a hook at a position close to the top of the electrophoresis tank 10. The cord 22 is fixed at one end to a hook of the first side wall 11 and at the other end is arranged outside the second side wall 12. The portion of the rope 22 in the electrophoresis tank 10 is wound around the first connection pulley 231 and the second connection pulley 232.
The power supply assembly 20 of this embodiment further includes a weight 24, the weight 24 being fixed to the end of the cord 22 that is outside the second side wall 12. When the car electrophoretic coating device 100 is not in use, the rope 22 wound around the first connecting pulley 231 and the second connecting pulley 232 is under tension by the weight of the counterweight 24, and the portion of the rope 22 between the first connecting pulley 231 and the second connecting pulley 232 is parallel to the bottom surface of the electrophoretic bath 10. In the initial position, the conductive member 21 is disposed on a portion of the rope 22 parallel to the bottom surface of the electrophoresis tank 10.
The conductive member 21 is fixed to a portion of the rope 22 between the first connection pulley 231 and the second connection pulley 232. When a compartment to be coated enters the electrophoresis tank 10, the conductive member 21 gradually descends along with the descending of the compartment after contacting the compartment. At this time, the height position of the weight block 24 is adjustable in the height direction of the electrophoresis tank 10. Under the effect of rope 22, balancing weight 24 slowly rises, and electrically conductive piece 21 can cooperate the carriage to slowly descend to the bottom in flexible contact carriage realizes the power supply to the carriage.
The buffer is realized through the rope 22 in the conductive piece 21, the rigid collision with the carriage with large volume and weight is avoided, the damage of the conductive piece 21 and the bottom of the carriage is avoided, the stability of the conductive piece 21 and the whole structure of the carriage is ensured, and the stable power supply of the conductive piece 21 to the bottom of the carriage is ensured.
In the present embodiment, the power supply assembly 20 further includes a first relay pulley 251 and a second relay pulley 252. Wherein the first transfer pulley 251 is vertically connected to the top end surface of the second side wall 12, and the rotation axis of the first transfer pulley 251 is parallel to the top end surface of the second side wall 12. The second switching pulley 252 is vertically connected to the outer side of the second side wall 12 and disposed near the top end of the second side wall 12, and the rotation axis of the second switching pulley 252 is parallel to the outer side of the second side wall 12.
The rope 22 is wound around the first connection pulley 231 and the second connection pulley 232, and then sequentially wound around the first transfer pulley 251 and the second transfer pulley 252. The first and second transition pulleys 251, 252 provide a transition for the cable 22 at the second side wall 12 to avoid friction between the cable 22 and the second side wall 12.
In other examples of this embodiment, the first transfer pulley 251 and the second transfer pulley 252 may be added to the second side wall 12 according to actual use requirements, the first transfer pulley 251 and the second transfer pulley 252 may also be directly eliminated, and one of the first transfer pulley 251 and the second transfer pulley 252 may also be arranged on the second side wall 12.
Further, the power supply assembly 20 further includes a weight tube 26, and the weight tube 26 is made of an insulating material. The outer profile of the weight tube 26 of the present embodiment is T-shaped, and the weight tube 26 includes a fixing portion 261 and a fitting portion 262. The fixing portion 261 is opened at both ends and hollow inside, the rope 22 is inserted and fixed in the fixing portion 261, and the fitting portion 262 is vertically connected to the bottom of the fixing portion 261.
Besides the T-shape shown in the present embodiment, in other examples, the counterweight tube 26 may have other shapes, such as an inverted L-shape, a rectangular shape, a circular shape, an inverted triangular shape, and other regular shapes, or other irregular shapes, as long as it can cooperate with the counterweight block 24 to realize counterweight, and this is not limited herein.
In the present embodiment, two counter weight tubes 26 are provided, and the two counter weight tubes 26 are disposed at intervals in a portion of the rope 22 between the first connecting pulley 231 and the second connecting pulley 232. The rope 22 may be connected to the inner wall of the fixing portion 261 of the weight tube 26 by means of adhesion, snap-fit, thermal fusion, or the like, so that the rope 22 is inserted and fixed into the two weight tubes 26.
In other examples, the number of the balance weight tubes 26 in the power supply assembly 20 is not limited to two, and may be set to one, three, four, six, etc. according to actual use requirements.
The weight of the weight block 24 of this embodiment is greater than the sum of the weights of the two weight tubes 26. Through the matching of the counterweight block 24 and the two counterweight pipes 26, when the coated carriage leaves the electrophoresis tank 10, the counterweight block 24 can move downwards under the action of gravity because the weight of the counterweight block 24 is greater than the sum of the weights of the two counterweight pipes 26. When the car is completely out of contact with the conductor 21, the counterweight 24 will descend to the initial position, and the conductor 21 will return to the initial position.
Under the cooperation of two counter weight pipes 26, the acceleration and the speed that balancing weight 24 descends all can obtain effectual slowing down to reduce the atress of whole power supply unit 20 when balancing weight 24 descends to the initial position, improve the holistic life of carriage electrophoresis coating device 100. In addition, the engagement of the tube 26 and weight 24 may also increase the tension on the cord 22, keeping the cord 22 in tension.
In the present embodiment, there are two conductive members 21, and the two conductive members 21 are respectively used for contacting with two longitudinal beams at the bottom of the vehicle cabin to supply power to the bottom of the vehicle cabin. In other examples, the number of the conductive members 21 may be set to one, three, four, six, etc. according to actual use requirements and the structure of the vehicle compartment.
The conductive members 21 of the present embodiment are tubular and made of metal material, and the two conductive members 21 are respectively sleeved outside the fixing portions 261 of the two balance weight tubes 26. During specific installation, the conductive member 21 is sleeved and fixed on the counterweight pipe 26, and then the counterweight pipe 26 is fixed on the rope 22, so that the counterweight pipe 26 and the conductive member 21 are integrated and fixed on the rope 22. By arranging the conductive member 21 and the balance weight tube 26 as an integral structure, the balance weight tube 26 is connected with the rope 22 to fix the conductive member 21 and the rope 22, so that the connection step of the conductive member 21 and the rope 22 can be omitted, and the installation procedure is simplified.
It should be noted that, in the present embodiment, the conductive members 21 are mounted on the rope 22 through the balance tubes 26, the number of the conductive members 21 is the same as that of the balance tubes 26, and the plurality of conductive members 21 are provided on the plurality of balance tubes 26 in one-to-one correspondence. In other examples, the number of conductive elements 21 may be different from the number of weight tubes 26, and the conductive elements 21 may be directly connected to the rope 22 by means including, but not limited to, adhesive bonding, snapping, heat-melting, etc.
In addition, in other embodiments, the connecting member may be configured as a spring that is elastically stretchable in the height direction of the electrophoresis tank 10.
The spring sets up in the bottom of electrophoresis tank 10, and the bottom of spring is connected with the bottom of electrophoresis tank 10, and electrically conductive 21 sets up the top at the spring. The conductive member 21 may be raised or lowered in the height direction of the electrophoresis tank 10 as the spring elastically expands and contracts in the height direction of the electrophoresis tank 10.
When the car electrodeposition coating device 100 is not in use, the amount of compression of the spring is L1 by the weight of the conductive member 21, and the conductive member 21 is at the initial position. When the compartment to be coated enters the electrophoresis tank 10, the conductive member 21 will gradually descend along with the descending of the compartment after contacting with the compartment, and the spring will be gradually compressed. Under the action of the spring, the conductive member 21 slowly descends to flexibly contact the bottom of the carriage, so that power is supplied to the bottom of the carriage. At this time, the compression amount of the spring is L2, and L2 is greater than L1.
The conductive piece 21 is buffered through the spring, so that the direct collision with a carriage with large volume and weight is avoided, the damage to the conductive piece 21 and the bottom of the carriage is avoided, the stability of the conductive piece 21 and the overall structure of the carriage is ensured, and the stable power supply of the conductive piece 21 to the bottom of the carriage is ensured.
When the coated carriage leaves the electrophoresis tank 10, the spring is gradually extended, and the conductive member 21 moves upward along with the spring. When the vehicle compartment is completely out of contact with the conductor 21, the amount of compression of the spring is restored to L1, at which time the conductor 21 returns to the initial position.
In this example, the springs and the conductive members 21 may be provided in two, respectively, and the two conductive members 21 are provided on top of the two springs, respectively. Two springs are arranged at intervals at the bottom of the electrophoresis tank 10, and two conductive pieces 21 are respectively used for contacting with two longitudinal beams at the bottom of the carriage.
In addition, in the embodiment, the car electrodeposition coating device 100 includes a plurality of sets of power supply modules 20, and the plurality of sets of power supply modules 20 are arranged at intervals along the length direction of the electrodeposition tank 10. When the carriage is coated, the plurality of groups of power supply assemblies 20 act simultaneously, and the electrophoresis uniformity and the coating efficiency of the carriage can be improved.
Referring to fig. 2, an embodiment of the present application further provides a car electrophoretic coating method. The car electrophoretic coating method is implemented by the car electrophoretic coating device 100, and the specific structure of the car electrophoretic coating device 100 is described above and is not described herein again.
Specifically, the compartment electrophoretic coating method comprises the following steps:
s10, the carriage to be coated is drawn by the travelling crane to enter the electrophoretic paint in the electrophoresis tank 10;
s20, the carriage descends in the electrophoresis tank 10 and collides with the conductive member 21, and the conductive member 21 flexibly contacts the bottom of the carriage through the connecting member;
s30, the carriage is kept at a set height position in the electrophoresis tank 10, the travelling crane supplies power to the top of the carriage, the conductive member 21 is electrified to supply power to the bottom of the carriage, so that the electrophoretic paint is adsorbed on the surface of the carriage to form a paint film;
and S40, after the coating of the carriage is finished, the travelling crane drives the carriage to move out of the electrophoresis tank 10.
When the car is painted by the car electrodeposition painting method according to the present embodiment using the car electrodeposition painting apparatus 100 shown in fig. 1, the portion of the rope 22 between the first connecting pulley 231 and the second connecting pulley 232 is parallel to the bottom surface of the electrodeposition bath 10 and the conductive member 21 is at the initial position before step S10.
Proceeding to step S10, the traveling crane hangs the car to be painted and lifts the car to the inside of the electrophoretic bath 10 so that the car is immersed in the electrophoretic paint.
In step S20, the car is gradually lowered in the electrophoresis tank 10 by the crane. When the carriage descends to the bottom of the electrophoresis tank 10, the two longitudinal beams at the bottom of the carriage abut against the two conductive pieces 21. After the car collides with the conductive member 21, the car is still lowered by a certain distance under the gravity and reaches a set height position in the electrophoresis tank 10.
During the descending process of the carriage, the conductive member 21 will gradually descend along with the descending of the carriage. At this time, the height position of the weight block 24 is adjustable in the height direction of the electrophoresis tank 10. Under the action of the rope 22, the counterweight block 24 slowly rises, and the conductive piece 21 can be matched with the carriage to slowly fall, so that the conductive piece is flexibly contacted with the bottom of the carriage.
In step S30, the vehicle compartment is held at a set height position inside the electrophoresis tank 10, the vehicle supplies power to the top of the vehicle compartment, and the conductive member 21 is energized to supply power to the bottom of the vehicle compartment.
The top in carriage and the bottom in carriage all form the electric field, and two electric fields superpose, can improve the homogeneity of the outside electric field in carriage. Under the effect of even electric field, the charged electrophoresis lacquer can adsorb on the surface in carriage uniformly, makes the top and the bottom in carriage all adsorb the electrophoresis lacquer to form the even film of thickness on the surface in carriage, guaranteed the quality and the effect of carriage application effectively. Meanwhile, the electric field intensity outside the carriage can be enhanced by supplying power to the bottom of the carriage through the conductive piece 21, so that the electrophoretic coating speed is effectively accelerated, the electrophoretic time is shortened, and the electrophoretic coating efficiency of the carriage is improved. In step S40, after the carriage coating is completed, the power supply is turned off, the electrophoresis is stopped, and the carriage is carried by the traveling vehicle and moved out of the electrophoresis tank 10.
During the process that the coated carriage leaves the electrophoresis tank 10, the counterweight block 24 moves downwards under the action of gravity because the weight of the counterweight block 24 is greater than the sum of the weights of the two counterweight pipes 26 on the rope 22. When the car is completely out of contact with the conductive member 21, the weight 24 is lowered to the initial position, and the conductive member 21 is returned to the initial position, so that the car electrophoretic coating device 100 is ready to coat the next car.
For the car electrophoretic coating device and the car electrophoretic coating method of the embodiment, the car electrophoretic coating method is realized by the car electrophoretic coating device. In the compartment electrophoretic coating device, the conductive piece can flexibly contact the bottom of the compartment through the connecting piece so as to supply power to the bottom of the compartment. The running vehicle is combined to supply power to the top of the carriage, electric fields are formed at the top of the carriage and the bottom of the carriage, and the two electric fields are superposed, so that the uniformity of the electric field outside the carriage can be improved. Under the effect of even electric field, the charged electrophoresis lacquer can adsorb on the surface in carriage uniformly, makes the top and the bottom in carriage all adsorb the electrophoresis lacquer to form the even film of thickness on the surface in carriage, guaranteed the quality and the effect of carriage application effectively. Meanwhile, the power is supplied to the bottom of the carriage through the conductive piece, so that the strength of an electric field outside the carriage can be enhanced, the speed of electrophoretic coating is effectively accelerated, the electrophoretic time is shortened, and the efficiency of electrophoretic coating of the carriage is improved. In addition, the conductive piece realizes buffering through the connecting piece, avoids rigid collision with a carriage with large volume and weight, avoids damage to the conductive piece and the bottom of the carriage, ensures the stability of the integral structure of the conductive piece and the carriage, and ensures that the conductive piece stably supplies power to the bottom of the carriage.
While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.
Claims (11)
1. The utility model provides a carriage electrophoresis application device, its characterized in that, includes electrophoresis tank and at least a set of power supply unit spare, open-top and inside holding electrophoresis lacquer that is used for of electrophoresis tank, the carriage of treating the application through the driving handling by the opening entering of electrophoresis tank in the electrophoresis tank, the driving be used for to the top power supply in carriage, power supply unit spare includes:
a conductive member disposed inside the electrophoresis tank; the conductive piece is connected with an external power supply to supply power to the bottom of the carriage;
and the connecting piece is fixed with the conductive piece so that the conductive piece flexibly contacts the bottom of the carriage.
2. The vehicle compartment electrocoating apparatus of claim 1 wherein the power supply assembly further comprises two connecting pulleys, the two connecting pulleys being secured to two opposing inner sides of the electrocoating bath;
the connecting piece is a rope made of an insulating material, one end of the rope is fixed on one side of the electrophoresis tank, the rope is wound on the two connecting pulleys, and the conductive piece is fixed on the part of the rope between the two connecting pulleys; and the height position of the other end of the rope is adjustable in the height direction of the electrophoresis tank.
3. The vehicle compartment electrocoating apparatus as claimed in claim 2, wherein the electrocoating bath includes a first side wall and a second side wall which are disposed opposite to each other, and one end of the rope is fixed to an inner side surface of the first side wall; the power supply assembly further comprises a balancing weight, the balancing weight is fixed to the other end of the rope, and the balancing weight is arranged outside the second side wall.
4. The vehicle compartment electrocoating apparatus of claim 3, wherein the power supply assembly further comprises a first transfer pulley, the first transfer pulley is vertically connected to the top end surface of the second side wall, a rotation axis of the first transfer pulley is parallel to the top end surface of the second side wall, and the rope is wound around the first transfer pulley.
5. The compartment electrocoating apparatus of claim 4, wherein the power supply assembly further comprises a second transfer pulley, the second transfer pulley is vertically connected to an outer side surface of the second side wall, and the second transfer pulley is disposed near a top end of the second side wall; the rotating axis of the second switching pulley is parallel to the outer side face of the second side wall, and the connecting piece winds on the second switching pulley.
6. The electrophoretic coating device for the carriage as claimed in any one of claims 3 to 5, wherein the power supply assembly further comprises a counterweight pipe made of an insulating material, the counterweight pipe is fixedly arranged on a part of the rope between the two connecting pulleys in a penetrating manner, and the weight of the counterweight pipe is matched with the weight of the counterweight block so as to keep the rope in a tensioned state.
7. The vehicle compartment electrocoating apparatus of claim 6 wherein there are two of the counterweight tubes, the two counterweight tubes being spaced apart on the rope; the power supply assembly comprises two conductive pieces, the conductive pieces are tubular, the conductive pieces are sleeved outside the two counterweight pipes respectively, and the conductive pieces are used for being in contact with the two longitudinal beams at the bottom of the carriage respectively.
8. The vehicle compartment electrocoating apparatus of claim 7, wherein the counterweight tube comprises a fixing portion and a mating portion connected with the fixing portion, the fixing portion and the mating portion forming a T-shaped structure; the fixing part is provided with openings at two ends and is hollow inside, the rope is fixedly arranged in the fixing part in a penetrating mode, and the conductive piece is sleeved outside the fixing part.
9. The vehicle compartment electrocoating apparatus of claim 1 wherein the connector is a spring, the spring being disposed inside the electrocoating bath; the bottom end of the spring is connected with the bottom of the electrophoresis tank, and the conductive piece is arranged at the top end of the spring so as to be in flexible contact with the bottom of the carriage.
10. The vehicle compartment electrocoating apparatus of claim 1, wherein the vehicle compartment electrocoating apparatus includes a plurality of sets of the power supply assemblies, the plurality of sets of the power supply assemblies being arranged at intervals along a length direction of the electrocoating bath.
11. A car electrophoretic coating method, characterized in that the car electrophoretic coating method is realized by the car electrophoretic coating device of any one of claims 1-10, and the car electrophoretic coating method comprises the following steps:
the carriage to be coated is drawn by the travelling crane to be immersed into the electrophoretic paint in the electrophoresis tank;
the carriage descends in the electrophoresis tank and pushes against the conductive piece, and the conductive piece flexibly contacts the bottom of the carriage through the connecting piece;
the carriage is kept at a set height position in the electrophoresis tank, the traveling crane supplies power to the top of the carriage, the conductive piece is electrified to supply power to the bottom of the carriage, so that the electrophoretic paint is adsorbed on the surface of the carriage to form a paint film;
and after the coating of the carriage is finished, the travelling crane drives the carriage to move out of the electrophoresis tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210787329.1A CN115110132A (en) | 2022-07-05 | 2022-07-05 | Carriage electrophoretic coating device and carriage electrophoretic coating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210787329.1A CN115110132A (en) | 2022-07-05 | 2022-07-05 | Carriage electrophoretic coating device and carriage electrophoretic coating method |
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| Publication Number | Publication Date |
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| CN115110132A true CN115110132A (en) | 2022-09-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210787329.1A Pending CN115110132A (en) | 2022-07-05 | 2022-07-05 | Carriage electrophoretic coating device and carriage electrophoretic coating method |
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