TWI511795B - Method of spraying and device thereof - Google Patents

Description

Spraying method and device

The present invention relates to a spraying method, and more particularly to a spraying method and apparatus which can uniformly spray and save paint.

In the prior art, as shown in Fig. 7, the spraying of the workpiece is performed by a spraying device 100a, and the spraying operation is performed by first starting the nozzle 31a to start spraying, and at the same time, the sliding of the nozzle 31a by the spraying sliding mechanism 3a. To achieve the spraying of the entire workpiece 1 by slipping. The nozzle 31a gradually accelerates from a stationary low speed state to a steady state state before the spraying operation, and gradually decelerates from a steady state to a stationary state after the spraying operation, and finally closes the nozzle 31a to end the spraying.

Since the nozzle 31a maintains the same amount of spray per unit time throughout the spraying operation, the coating C thickness of the workpiece 1 depends on the speed of the slip. The slower the slip speed, the more the coating thickness increases. Conversely, the faster the slip speed, the smaller the coating thickness. Therefore, the thickness of the coating of the workpiece 1 can be made uniform only when the steady state is slid, and the thickness of the coating C is unevenly changed or tapered when accelerating and decelerating. In order to avoid this problem, the prior art is to place the workpiece 1 at a position corresponding to the nozzle 31a of the spraying device 100a when the slip speed reaches a steady state, so that the uneven spraying of the nozzle 31a during acceleration and deceleration slip occurs. Correspondingly, it is applied to the edge of the carrier 2 without being applied to the workpiece, but this spraying method causes a part of the coating to be sprayed on the carrier 2, thus causing waste of the coating.

Accordingly, the object of the present invention is to provide a spraying method and equipment It can save paint by spraying evenly on the vehicle or without spraying.

The technical means for solving the problems of the prior art is to provide a spraying method for spraying a workpiece, comprising: (a) a bearing area of a nozzle and a carrier carrying the workpiece is Performing a spraying operation with respect to slipping, wherein the carrying zone is spaced apart from the carrier by a predetermined distance, and the carrying zone defines a range to be sprayed; (b) the nozzle is beyond the waiting by the control mechanism The spray range is controlled and the spray is controlled to stop spraying when the relative slip speed does not reach a smooth speed range and/or the relative slip time does not reach a predetermined start spray time range.

In an embodiment of the invention, there is provided a spraying method, after the step (a), further comprising controlling, by the control mechanism, the nozzle to stop spraying when the relative slip speed does not reach a smooth speed range step.

In an embodiment of the present invention, there is provided a spraying method, after the step (a), further comprising: controlling, by the control mechanism, when the relative slip time is less than a preset start spraying time range, The nozzle is the step to stop spraying.

In one embodiment of the invention, a spray method is provided, the load zone being a fixed arrangement, and the nozzle being a nozzle that slides relative to the load zone.

In an embodiment of the invention, a spray method is provided which is a nozzle provided for reciprocating slip.

The technical means for solving the problems of the prior art is to provide a spraying device for spraying a workpiece, the device comprising: a carrier having an upper surface, the upper surface having a bearing area, The load bearing zone defines a range to be sprayed; a spray slip mechanism has a nozzle, the nozzle is spaced apart from the carrier by a predetermined distance, and the nozzle and the load zone are relatively slipped for a spraying operation; and a control The mechanism controls the nozzle to stop spraying when the nozzle exceeds the to-be-sprayed range according to the to-be-sprayed range, and the control mechanism includes a slip speed monitoring module and/or a timing module, wherein the control mechanism By this slip The speed monitoring module controls the nozzle to stop spraying when the relative slip speed does not reach a smooth speed range, and/or the control mechanism determines the corresponding correspondence between the nozzle and the to-be-sprayed range by the timing module a positional relationship to control the nozzle to stop spraying according to the range to be sprayed when the nozzle exceeds the range to be sprayed.

In one embodiment of the invention, a spray apparatus is provided that is fixedly disposed and that is a nozzle that slides relative to the load bearing area.

In an embodiment of the invention, a spray apparatus is provided which is a nozzle provided for reciprocating slip.

According to the technical means adopted by the present invention, the control mechanism controls the nozzle to be sprayed at a position corresponding to the range to be sprayed, and the control mechanism controls the nozzle when the slip exceeds the range to be sprayed. In order to stop the spraying, the coating can be sprayed on the workpiece without being sprayed on the carrier, thereby saving the amount of paint used and further maintaining the cleaning of the carrier.

In addition, with the slip speed monitoring module, when the slip speed of the nozzle does not reach a smooth speed range, the nozzle will stop spraying, thereby avoiding uneven thickness of the coating due to abnormal nozzle slip speed. .

The specific embodiments of the present invention will be further described by the following examples and the accompanying drawings.

〔this invention〕

100‧‧‧ Spraying device

1‧‧‧Workpiece

2‧‧‧ Vehicles

21‧‧‧ Carrying area

211‧‧‧Spray range

3‧‧‧Spray slip mechanism

31‧‧‧Nozzles

4‧‧‧Control agency

41‧‧‧Slip speed monitoring module

42‧‧‧Time Module

C‧‧‧ paint

P0‧‧‧ starting position

P1‧‧‧ first position

P2‧‧‧ second position

P3‧‧‧ third position

[study]

100a‧‧‧ spraying device

1‧‧‧Workpiece

2‧‧‧ Vehicles

3a‧‧‧Spray slip mechanism

31a‧‧‧Nozzles

C‧‧‧ paint

1 is a flow chart showing a spraying method according to an embodiment of the present invention; FIG. 2 is a schematic view showing a spraying process of a spraying device according to the embodiment of the present invention; and FIG. 3 is a view showing 2 is a schematic view showing a spraying process of the spraying device of the embodiment of the present invention; FIG. 4 is a third schematic view showing a spraying process of the spraying device according to the embodiment of the present invention; and FIG. 5 is a view showing the present invention according to the present invention. Spraying process of the spray device of this embodiment 4 is a schematic view showing a spraying path of the spraying device according to the embodiment of the present invention; and FIG. 7 is a schematic view showing a conventional spraying device.

Hereinafter, embodiments of the present invention will be described with reference to Figs. 1 to 6 . This description is not intended to limit the embodiments of the invention, but is an embodiment of the invention.

Referring to Figures 1 through 5, a spraying apparatus 100 for spraying a workpiece 1 according to an embodiment of the present invention. In the present embodiment, the spraying device 100 includes a carrier 2, a spray slip mechanism 3, and a control mechanism 4. One of the upper surfaces of the carrier 2 has a load-bearing area 21 defining a range 211 to be sprayed. The spray slip mechanism 3 has a nozzle 31 which is spaced apart from the carrier 2 by a predetermined distance d, and the nozzle 31 is relatively slipped with the load bearing area 21. The control mechanism 4 is connected to the spray-slip mechanism 3, and controls the nozzle 31 to perform spraying or stop spraying according to the to-be-sprayed range 211. In the present embodiment, the nozzle 31 is slid relative to the load bearing area 21. Of course, the invention is not limited thereto. The load-bearing zone 21 can also slide relative to the nozzle 31, or the load-bearing zone 21 can slide relative to the nozzle 31 at the same time.

As shown in FIG. 1, a spraying method of the present embodiment mainly includes the steps of: sliding the nozzle 31 along a slip path R with respect to the load bearing area 21 to perform a spraying operation (step S10), and borrowing When the nozzle 31 exceeds the to-be-sprayed range 211 by the control mechanism 4, the nozzle 31 is controlled to stop spraying (step S20).

Referring to Figures 2 through 6, and in conjunction with Figure 1, a detailed embodiment of the present embodiment will be described below.

As shown in Fig. 2, first, the nozzle 31 is gradually accelerated by a starting position P0 and is slid along the slip path R (step S10). When the nozzle 31 is When the starting position P0 starts to slip, it corresponds to a position beyond the to-be-sprayed range 211 of the carrying area 21 (step S20). At this time, the control mechanism 4 controls the nozzle 31 to stop spraying (step S30).

As shown in FIGS. 3 and 4, during the sliding of the nozzle 31 from a first position P1 to a second position P2, the nozzle 31 corresponds to the to-be-sprayed range 211 (step S20), In the process, the control mechanism 4 controls the nozzle 31 to perform spraying (step S40). As shown in FIG. 5, when the nozzle 31 is slid to a third position P3, since the nozzle 31 corresponds to a position beyond the range to be sprayed 211 (step S20), the control mechanism 4 controls the current time. The nozzle 31 can save the amount of the coating material C by stopping the spraying (step S30).

Optionally, the control mechanism 4 further includes a slip speed monitoring module 41, and the slip speed monitoring module 41 monitors whether the relative slip speed of the nozzle 31 reaches a smooth speed range (step S21). . In detail, when the nozzle 31 starts to slip by the starting position P0, the slip speed of the nozzle 31 gradually increases, and when the nozzle 31 slides to the first position P1, the slip speed of the nozzle 31 reaches a smooth state. The speed continues and the smooth speed is slid to the second position P2, and then the slip speed of the nozzle 31 is gradually slowed down when the nozzle 31 is slid to the third position P3. Therefore, in this example, when the slip speed monitoring module 41 detects that the relative slip speed of the nozzle 31 does not reach the smooth speed range, that is, during speed increase and deceleration, the control mechanism 4 controls the The nozzle 31 stops spraying (step S30). In addition, when the nozzle 31 is caused to change in speed between the first position P1 and the second position P2 which should be slipped at a smooth speed due to an abnormal condition, the slip speed is monitored by the slip speed. In the monitoring of the module 41, the control mechanism 4 controls the nozzle 31 to stop spraying (step S30) to avoid occurrence of uneven coating thickness. For example, the slip speed monitoring module 41 can be composed of a hardware component, and the slip speed monitoring module 41 can include a gravity sensor and an electromagnetic switch electrically connected to the gravity sensor ( The figure is not shown). When the slip speed of the nozzle 31 does not reach the steady speed, the electromagnetic switch is in an open state, so that the control mechanism 4 can The nozzle 31 is controlled to stop spraying. On the contrary, when the slip speed of the nozzle 31 reaches the steady speed, the electromagnetic switch is in a closed state, so that the control mechanism 4 can control the nozzle 31 for spraying. Of course, the invention is not limited thereto. The slip speed monitoring module 41 may also include a soft component or other hardware component, and the same can be used when the slip speed of the nozzle 31 exceeds the smooth speed range, and the nozzle 31 is controlled by the control mechanism 4 to stop spraying or Spray.

Optionally, the control mechanism 4 can further include a timing module 42 that presets a starting spray time range. The positional relationship between the nozzle 31 and the to-be-sprayed range 211 is determined by the timing module 42 (step S22). Specifically, the preset start spraying time range can be set according to the slip speed of the nozzle 31 and the to-be-spray range 211 to calculate the time required for the nozzle 31 to slip to the corresponding range 211 to be sprayed. When the relative slippage of the nozzle 31 is not within the preset start spraying time range, the control mechanism 4 controls the nozzle 31 to stop spraying (step S30). On the other hand, when the relative slip time is within the preset start spraying time range, the control mechanism 4 controls the nozzle 31 to perform spraying (step S40). Of course, the invention is not limited thereto. The control mechanism 4 can also determine the corresponding positional relationship between the nozzle 31 and the to-be-sprayed range 211 according to the distance the nozzle 31 slides and the range to be sprayed 211. The timing module 42 can be made of pure hardware. The timing module 42 can include only a timer and an electromagnetic switch (not shown) electrically connected to the timer, so that the electromagnetic switch can be activated according to the startup time. The range is an open state or a closed state, so that the control mechanism 4 can control the nozzle 31 to stop spraying or spraying. Of course, the invention is not limited thereto. The timing module 42 may also include a software component or other hardware component and the nozzle 31 may be controlled to stop spraying or spraying by the control mechanism 4 in accordance with the start-up spraying time range.

Then, the control unit 4 determines whether or not the painting operation is ended (step S50). For example, the control mechanism 4 determines whether or not to end the painting operation based on the position of the nozzle 31 at the slip path R. Of course, the invention is not limited thereto. The control mechanism 4 can also determine whether to end the spraying operation according to other various settings, for example, according to the remaining amount of the paint. Alternatively, by adjusting the to-be-sprayed range 211, the control mechanism 4 controls the nozzle 31 to locally spray a specific range of the workpiece 1 according to the to-be-sprayed range 211.

As shown in Fig. 6, in the present embodiment, the nozzle 31 slides from left to right, from top to bottom, from right to left, and from top to bottom along the slip path R. Of course, this creation is not limited to this. The nozzle can also slide along other slip paths R, for example: from right to left, from bottom to top, from left to right, and then from bottom to top. Referring to FIGS. 1 and 5 again, after the nozzle 31 is slid to the right to the third position P3, the control unit 4 determines whether or not the spraying operation is ended (step S50). When the control mechanism 4 determines NO, the nozzle 31 is translated downward to slide to the left at another position corresponding to the workpiece 1 to perform a spraying operation, and then the control mechanism 4 determines whether to end the spraying operation (step S50). When the control mechanism 4 determines NO, the nozzle 31 is translated downward to slide to the right at another position corresponding to the workpiece 1 to perform a spraying operation. When the control mechanism 4 determines that the spraying operation is ended, the control mechanism 4 controls the nozzle 31 to stop slipping (step S60).

The above description is only for the preferred embodiment of the present invention, and those skilled in the art can make other improvements according to the above description, but these changes still belong to the inventive spirit of the present invention and the patents defined below. In the scope.

Claims (6)

A spraying method for spraying a workpiece, the method comprising: (a) performing a spraying operation on a nozzle and a bearing area of a carrier carrying the workpiece, wherein the bearing area is Separating a predetermined distance from the carrier, and the load bearing zone defines a range to be sprayed; (b) the nozzle is beyond the range to be sprayed by a control mechanism and does not reach a smooth speed at the relative slip speed When the speed range and/or the relative slip time does not reach a preset start spray time range, the nozzle is controlled to stop spraying. The spraying method of claim 1, wherein the load bearing zone is a fixed arrangement, and the nozzle is a nozzle that slides relative to the load bearing zone. The spraying method of claim 1, wherein the nozzle is a nozzle provided for reciprocating sliding. A spraying device for spraying a workpiece, the device comprising: a carrier having an upper surface, the upper surface having a load-bearing area defining a range to be sprayed; and a spray-slip mechanism having a nozzle, the nozzle is spaced apart from the carrier by a predetermined distance, and the nozzle and the bearing zone are relatively slipped to perform a spraying operation; and a control mechanism is disposed at the nozzle beyond the to-be-sprayed according to the to-be-sprayed range Controlling the nozzle to stop spraying, and the control mechanism includes a slip speed monitoring module and/or a timing module, wherein the control mechanism is in the relative slip by the slip speed monitoring module Controlling the nozzle to stop spraying when the speed does not reach a steady speed range, and/or the control mechanism determines the corresponding positional relationship between the nozzle and the to-be-sprayed range by the timing module, according to the range to be sprayed The nozzle is controlled to stop spraying when the nozzle is outside the range to be sprayed. The spraying device of claim 4, wherein the load bearing zone is a fixed arrangement, and the nozzle is a nozzle that slides relative to the load bearing zone. The spraying device of claim 4, wherein the nozzle is a nozzle provided for reciprocating sliding.