JPH06339652A - Flexible film set and device for exchanging the same in apparatus for coating stick such as chopstick - Google Patents

Abstract

(57) [Summary] [Purpose] To facilitate the work of exchanging the flexible film 6 used when the thin rod-shaped body A is pushed into the paint tank 4 to coat the outer peripheral surface of the thin rod-shaped body A. [Structure] The flexible membrane set 7 includes a flexible membrane 6 with an insertion hole 6a into which a thin rod-shaped body A such as chopstick material can be inserted into the paint tank 4 from its tip, and a frame hole 29 larger than this insertion hole 6a. It comprises a pair of front and back support plates 27, 28 for sandwiching the flexible film 6 so as not to be displaced. A holding body 3 which elastically holds the left and right edges of the flexible film set 7 with biasing springs 41 outside the support frames 35 at the front and rear ends of the paint tank 4.
8 and 38 are provided. The holding bodies 38, 38 and the support frame 35
The flexible membrane set 7 is pushed into the outer surface.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible membrane set to be attached to a paint tank for coating the outer peripheral surface of a thin rod-shaped body such as chopsticks with a paint such as lacquer, and a replacement device for the flexible membrane set. Is related to the structure of.

[0002]

2. Description of the Related Art As a device for coating paint such as lacquer on the outer peripheral surface of a thin rod-shaped body whose tip of bamboo or wooden chopsticks is thin and becomes thicker toward the root, the applicant of the present invention has previously proposed In JP-A-62-58791, a paint tank is provided in front of a holding tool for holding a root portion of a thin rod-shaped body in a substantially horizontal state so as to reciprocate back and forth, and in front of the paint tank,
A flexible membrane with an insertion hole into which a thin rod-shaped body in a substantially horizontal state can be inserted is stretched, and the periphery of the surface side of the flexible membrane is screwed to a paint tank while being sandwiched by a sandwiching plate. Disclosed.

[0003]

In the structure of the prior art described above, the flexible film is made of rubber or the like having a large elasticity, and when the paint tank containing the paint is brought closer to the holding tool, the thin film is thin. The rod-shaped body is pushed into the paint tank from its tip while expanding the insertion hole of the flexible film against the film elasticity, and the paint adheres to the outer peripheral surface of the thin rod-shaped body. When the thin rod-shaped body is pulled out from the flexible film as the paint tank retracts, the outer peripheral surface of the thin rod-shaped body receives a handling action as the insertion hole tries to shrink due to the film elasticity of the flexible film, wiping off the excess paint. It can be applied to a thin rod.

As described above, the insertion hole of the flexible film is gradually enlarged by the repeated insertion and extraction of the thin rod-shaped body.
As a result, the paint such as lacquer in the paint tank leaks out from the insertion hole, and the handling action also deteriorates. Therefore, the flexible film is replaced every time the number of coating of the thin rod-shaped body reaches a predetermined number. Conventionally, in order to replace such a deteriorated flexible film, it is necessary to remove the flexible film fixed to the outer surface of the paint tank with a holding plate and a screw after all the paint in the paint tank is once discharged. There is a problem in that the replacement work is time-consuming and the adjustment work for mounting the flexible film so as not to cause the displacement of the insertion hole in the flexible film with respect to the front surface of the paint tank when the flexible film is mounted.

The present invention is intended to solve these technical problems.

[0006]

[Means for Solving the Problems] To achieve the purpose,
The invention according to "Claim 1" is such that a flexible film set detachably attached to a side surface or a bottom surface of a paint tank is provided with a through hole through which a thin rod-shaped body such as chopstick material can be inserted into the paint tank from its tip. It comprises a membrane and a pair of support plates having a frame hole larger than the insertion hole and for sandwiching the flexible membrane so as not to be displaced.

Further, in the device for exchanging the flexible film set, a holding means for elastically holding a pair of opposing edges of the flexible film set is provided outside the side surface or the bottom surface of the paint tank. A pushing body for pushing the flexible film set between the holding means and the paint tank is configured to move in a substantially parallel manner with a side surface or a bottom surface of the paint tank.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described. FIG. 1 is a plan view of a coating apparatus 1, and FIG. 2 is a front view thereof. A paint tank 4 having a right and left length is attached to the established vertical axis 3, and the paint tank 4 is configured to rotate horizontally via a drive motor 5 and a transmission mechanism.

Reference numeral A is a thin rod-shaped member such as a chopstick material made of bamboo or wood and has a thin tip and a diameter gradually increasing toward the root. Flexible film sets 7 having flexible films 6 made of rubber or the like having flexibility are detachably disposed on the left and right end surfaces of a paint tank 4 formed in an elongated box having an open upper surface, An insertion hole 6a (a hole which is extremely smaller than the cross-sectional area of the tip portion of the thin rod-shaped body A) into which the thin rod-shaped body A can be inserted from the tip is formed in the substantially central portion of the flexible film 6.

On the table 2, the paint tank 4 is provided.
A supply means 8 for pushing and supplying the thin rod-shaped body A, which is arranged so that the longitudinal axis a is substantially horizontal, to the paint tank 4 is arranged at one position (right side in FIG. 1) across the space. Then, at the other part of the paint tank 4 (on the left side of FIG. 1), the thin rod-shaped body A after painting is pulled out from the paint tank 4 and the support 1
Ejecting means 9 for mounting on 0 is provided.

Next, the supply means 8 will be described in detail with reference to FIGS. 1, 2 and 3. The supply means 8 supplies the thin rod-shaped bodies A one by one from the hopper 11 to the supply base 15, the moving means for laterally moving the thin rod-shaped bodies A on the supply base 15, and the thin rod-shaped bodies A in the paint tank 4. It can be roughly classified into a means for pushing it toward the flexible film 6 on the end face. That is, the insertion portion 11 of the hopper 11
A large number of thin rod-shaped bodies A are inserted from a in a substantially horizontal posture, and one thin rod-shaped body A is lifted up side by side by the supply motor 13 and chain conveyor 12 and dropped into the reservoir 11b. Reference numeral 14 is a sensor such as a limit switch provided in the reservoir 11b. When it senses that about 20 to 30 reservoirs have been stored in the reservoir 11b, the supply motor 13
To stop. Reference numeral 16 is a feeder for supplying the thin rod-shaped bodies A one by one toward the supply table 15 located below the outlet of the reservoir 11b, and a swing mechanism 16a for opening and closing the outlet lower surface of the reservoir 11b, It is composed of a pressing portion 16b which is interlocked with the swing mechanism 16a and which repeatedly presses and releases the side surface of one thin rod-shaped body A laterally near the outlet. The feeder 1
A forced moving mechanism 17 for laterally moving the thin rod-shaped body A dropped on the upper surface of the supply table 15 is configured to move forward and backward with respect to the actuator 18 by air pressure or the like. Stopper 19 that moves upward and downward with
A thin rod-shaped body A on the side surface (operated by the pneumatic actuator 20)
When the stopper 19 is sunk after the contact is made once, the thin rod-shaped body A is moved to the recessed groove portion near the regulation wall 15a on the one side of the supply base 15.

The longitudinal direction of the groove is the centering body 2 described later.
5, it is possible to set the longitudinal axis of the thin rod-shaped body A so as to coincide with the axis connecting the insertion hole 6a of the flexible film 6 and the pressing body 21. Reference numeral 21 is a pressing body that comes into contact with the base of the thin rod-shaped body A and pushes it out in the direction of the paint tank 4, and reference numeral 22 is a pair of upper and lower guide shafts that slidably support the pressing body 21. 22 is a pair of stands 23, 2
It is supported by 3. The pressing body 21 is vertically rotated at the rear side of the base of the thin rod-shaped body A by an actuating actuator 24 such as an air cylinder, and the direction in which the pressing body 21 is moved toward and away from the front surface of the paint tank 4 by an actuator 55. It is configured to move back and forth.

Between the supply table 15 and the front surface of the paint tank 4, a centering body 25 provided with a V notch for supporting the tip end of the thin rod-shaped body A in a substantially horizontal state is attached to a pneumatic actuator 26. The centering body 25 descends when the pressing body 21 approaches the front surface of the paint tank 4. Reference numeral 26 in FIG. 1 is an adjusting means for aligning the position of the base of the thin rod A with respect to the pressing body 21, and the base of the thin rod A placed on the supply table 15 is slightly covered with the paint tank 4. Press in the direction.

FIG. 4 is a perspective view showing the details of the flexible membrane set 7. A large-diameter frame hole 29 is formed in each of the pair of front and back sandwiching plates 27, 28. The flexible film 6 is sandwiched so that the insertion hole 6a of the flexible film 6 is located. At this time,
An engaging protrusion 30 and an engaging hole 31 into which the engaging protrusion 30 is fitted are provided on the pair of sandwiching plates 27, 28 at positions symmetrical to each other with respect to the frame hole 29, and are provided in the flexible film 6. Through hole 3
The flexible film 6 is aligned with the pair of sandwiching plates 2
It is configured so as to be firmly clamped without being displaced from 7, 28. According to this structure, the flexible film 6 is attachable to and detachable from the pair of front and back sandwiching plates 27, 28, and the flexible film 6 is also removable.
The replacement work can be done quickly.

In order to prevent the displacement of the flexible film 6 with respect to the sandwiching plates 27 and 28, one sandwiching plate and the flexible film 6 to be inserted are formed in the same shape in a plan view, and both of them are formed in the other. An edge frame may be provided so as to fit within the four peripheral side edges of the holding plate so as not to be displaced. 5 to 8 show the paint tank 4
Showing the mounting structure of the flexible membrane set 7 for the vertical axis 3
U-shaped support frames 35, 35 with large-diameter holes 34 are erected at both ends of a long-sized base 33 to be attached by, and both support frames 35, 35 are connected by reinforcing bars 36, 36, and a cross section is omitted. A trough-shaped tray 37 having U-shaped open ends is closely fitted between the support frames 35, 35 (in this case, a sealing material may be inserted in the gap between the open ends of the tray 37). The liquid paint in the tray 37 is configured so as not to leak from the gap between the inner surfaces of the support frames 35, 35.

Reference numerals 38 and 38 denote a pair of right and left holding bodies for elastically holding the flexible film set 7 on the outer surface side of each of the support frames 35. Each holding body 38 is L-shaped in plan view. Formed in
A guide piece 39 of the holding body 38 is slidably fitted to a guide rail 40 formed in a recess on the side surface of each support frame 35, and is mounted between the guide piece 39 and a support piece 42 erected from the base 33. The flexible film set 7 is held by the force of the urging spring 41 so as not to fall off.

Reference numeral 43 is a ball 4 attached to the holding body 38.
With the four-type positioning mechanism, the spring-biased ball 44 is fitted into the engaging recess 45 formed in the surface of the holding plate 27 or 28 to regulate the vertical position of the flexible film set 7 for positioning. . Reference numeral 46 indicates that the guide piece 39 is the guide rail 4.
It is a cover body that does not fall off from 0 locations, and is detachably attached to the side surface of the support frame 35 with bolts 47.

Reference numeral 48 is a replacement device for the flexible membrane set 7 provided above the discharge means 9 side, and an actuator 50 such as a pneumatic pressure is provided at the rear portion of a cassette 49 containing a large number of flexible membrane sets 7. The flexible membrane set 7 is pressed in the direction of the front guide rail 51. Front guide rail 5
A supply hole 52 is provided below the flexible film set 7 so that the flexible film set 7 can move downward one by one.
A pushing body 53 that moves up and down along the guide rail 51 via the guide rail 4 is provided.

The push body 53 pushes the flexible film set 7 in the cassette 49 downward, and the flexible film set 7 in the cassette 49 can be elastically held by the pair of holding bodies 38, 38 at one end of the paint tank 4. The flexible membrane set 7 is replaced by replacing the old and new flexible membrane sets 7 by forcibly pushing it downward while pressing it against the upper surface of the flexible membrane set 7. Reference numeral 48a is a column standing upright from the table 2 for instructing the replacement means 48, and reference numeral 48b is a guide tube for guiding the flexible film set 7 falling downward to a place of a stacking box (not shown).

This exchange device 48 is arranged below the paint tank 4, a new flexible film set 7 is pushed upward from below, and the old flexible film is held by the pair of left and right holding bodies 38, 38. You may comprise so that it may be replaced with the membrane set 7. Further, the pair of holding bodies 38, 38 are provided at the upper and lower edges of the surface of the support frame 35 of the paint tank 4 with respect to the traveling work machine, and the flexible film set 7 held by this is held with respect to the paint tank 4. The pushing device 53 of the exchanging device 48 is configured to be capable of moving laterally (substantially horizontally) in the lateral direction with respect to the pair of holding bodies 38, 38, and the old and new can be used. The flexible membrane set 7 may be interchangeable in the lateral direction. In this case, since the paint tank 4 rotates in the horizontal direction, the position of the cassette 49 is configured to be movable in and out of contact with the end of the paint tank 4 so as not to interfere with the rotation.

Next, the discharging means 9 will be described with reference to FIGS. 1, 2 and 5. The discharging means 9 is roughly classified into a drawing mechanism 56 for drawing the thin rod-shaped body A from the paint tank 4 in a substantially horizontal state, and a drawing mechanism. The root portion of the thin rod-shaped body A is taken over from the mechanism 56 and is changed to a substantially vertical position so that the support 10
And a posture conversion mechanism 58 that leans against. The pulling-out mechanism 56 is a support provided with a pair of left and right holding tools 59, 59 for holding the root of the thin rod-shaped body A from the left and right after rotating the paint tank 4 in which the thin rod-shaped body A is inserted by 180 degrees in a plan view. 60, and a drive motor 62 that rotates forward and backward for driving an endless chain 61 to which the support 60 is attached.
Is supported so as to be movable back and forth along the guide shaft 63. The pair of clamps 59, 59 are configured such that the tip end side of the pneumatic rotary reactor 64 reciprocates widely and narrowly. The pair of left and right holding claws 65, 65 of the posture changing mechanism 58 are constructed by a pneumatic rotary reactor (not shown) provided on the arm 67 so that the tip end thereof reciprocates widely and narrowly, and the arm 67 is supported. Case 66
On the other hand, the arm 67 is provided to rotate up and down by about 90 degrees, and the arm 67 is rotated by a pneumatic rotary reactor not shown in the support case 66. The support case 67 is a pneumatic actuator 68 which is a reciprocating drive means disposed under the table 2.
Move back and forth at.

Reference numerals 69, 70, 71 and 72 indicate the operation timing of the operation actuator 55 and the drive motor 62 for moving the supply means 8 and the discharge means 9 back and forth and the timing of horizontal rotation of the paint tank 4. It is a sensor such as a limit switch for automatic execution, and is configured to control the following operations by a central processing unit 73 such as a microcomputer provided on the table 2 or the like.

Next, the operation of the movement and the like of the device having this configuration will be described. First, as shown in FIGS. 1 and 2, the hopper 1
The thin rod-shaped bodies A dropped one by one along the regulating wall 15a on the supply base 15 are set such that the tip side of the thin rod-shaped body A comes close to the paint tank 4, and then the supply base 15 The centering body 25 is lifted from one end side of the thin rod-shaped body A so that the longitudinal axis of the thin rod-shaped body A is directed to the insertion hole 6a in the flexible film set 7 on one end face of the paint tank 4, and the actuator 55 is turned on. 21 in the direction of arrow B,
From the tip of the thin rod-shaped body A, the flexible film 6 on the front surface of the paint tank 4
When the pressing body 21 approaches the centering body 25 by pushing it into the insertion hole 6a in the above, the centering body 25 is lowered, and the pressing body is further pushed until the root portion of the thin rod-shaped body A projects to the outside of the flexible film 6. 21 is advanced. After that, the pressing body 21 is stopped and then retracted in the C direction.

After a slight time delay from the start of the backward movement of the pressing body 21, the paint tank 4 is horizontally rotated 180 degrees around the vertical axis 3 and then stopped. Almost at the same time as the horizontal rotation of the paint tank 4, the holding tool 5 of the withdrawal mechanism 56 in the discharging means 9 is held.
The paint tank 4 is stopped by bringing 9, 59 close to the root of the protruding thin rod-shaped body A in the semi-rotated paint tank 4.
After the base portion of the thin rod-shaped body A is clamped, it is retracted away from the paint tank 4. At this time, since the flexible film set 7 side of the other end surface of the paint tank 4 faces the supply means 8, the pressing body 21 of the supply means 8 faces the thin rod-shaped body A on the supply base 15. The flexible film 6 is synchronously operated so as to be pushed forward toward the insertion hole 6a.

In this way, wasteful control is performed by repeating the intermittent rotation of the paint tank by 180 degrees and the simultaneous push-in and pull-out of the thin rod-shaped body A at both ends of the paint tank when the rotation is stopped. It is possible to minimize the amount of time required, and to speed up and improve the efficiency of painting work. The thin rod-shaped body A whose tip is largely inserted in the paint tank 4 is immersed in the highly viscous paint in the paint tank 4 even though its tip is not supported in the paint tank 4. It takes a long time to rotate the tip of the thin rod A to the bottom of the paint tank 4 so as to drop, and the horizontal force of the paint tank 4 causes centrifugal force, so that the thin rod A becomes horizontal. Therefore, the axis of the thin rod-shaped body A is substantially horizontal when the base portion of the thin rod-shaped body A is clamped by the clamps 59, 59 of the pulling-out mechanism 56 in the discharging means 9.

Then, the thin rod-shaped body A is drawn by the pulling-out mechanism 56.
Is completely pulled out from the paint tank 4, and the base portion is changed over by the holding claws 65, 65 of the posture changing means 58.
When the posture changing means 58 is retracted by a slight distance and then rotated so that the tip of the thin rod-shaped body A faces upward, the root portion of the thin rod-shaped body A fits into the support hole in the support tool 10 and stands upright. You can do it.

Flexible membranes 6 attached to both end surfaces of the paint tank 4.
If the insertion hole 6a of the
A new flexible membrane set 7 may be replaced by the replacement device 48. At this time, in the illustrated embodiment, the flexible membrane set 7 to be newly replaced on the upper surface of the old flexible membrane set 7.
Since the both flexible film sets 7 and 7 move downward at the positions of the pair of holding bodies 38 and 38 in a state where they are in contact with each other, even if the paint is kept in the paint tank 4, The paint does not leak out, and the replacement work of the flexible film set 7 can be completed quickly.

The flexible membrane set was replaceably mounted on the bottom side of the paint tank having an open top surface, and the thin rod-shaped body was pushed downward from the top side of the paint tank to pass through the flexible membrane set. The flexible membrane set and the exchange device of the present invention can be applied to a coating device configured such that the base portion of the thin rod-shaped body is sandwiched and pulled out below.

[0029]

According to the configuration of the invention of "Claim 1", the flexible film set detachably attached to the side surface or the bottom surface of the paint tank has a thin rod-shaped body such as chopstick material from the tip thereof. A flexible membrane with an insertion hole that can be inserted into the tank,
Since the flexible film set includes a frame hole larger than the insertion hole and a pair of front and back support plates for sandwiching the flexible film so that the flexible film cannot be displaced, the flexible film set may be integrally replaced. Easy to handle.

Further, in the invention of "Claim 2", a holding means for elastically holding a pair of facing edges of the flexible film set is provided outside the side surface or the bottom surface of the paint tank. Since the pushing body for pushing the flexible film set between the holding means and the paint tank is configured to move in a substantially parallel manner with the side surface or the bottom surface of the paint tank, the flexible film set that needs to be replaced. And the flexible membrane set to be newly replaced are adjacent to each other, the pair of holding bodies 3 is pushed by the pushing body.
Since it moves along the points 8 and 38, even if the paint is still contained in the paint tank, the paint does not leak out of the paint tank, and the flexible film set replacement work is completed quickly. It has a remarkable effect that it can be done.

[Brief description of drawings]

FIG. 1 is a plan view of a coating device.

FIG. 2 is a partially cutaway front view of the coating device.

FIG. 3 is a right side view of FIG.

FIG. 4 is an exploded perspective view of a flexible membrane set.

FIG. 5 is a partially sectional front view of the discharge side.

FIG. 6 is an exploded perspective view of a paint tank.

FIG. 7 is an end cross-sectional view of the paint tank.

8 is a sectional view taken along the line VIII-VIII in FIG.

[Explanation of symbols]

 1 coating device 2 table A thin rod 3 vertical axis 4 paint tank 5 drive motor 6 flexible membrane 6a insertion hole 7 flexible membrane set 8 supply means 9 discharge means 10 support tool 11 hopper 15 supply table 16 feeder 17 forced movement mechanism 21 pressing body 25 centering body 27, 28 holding plate 29 frame hole 35 supporting frame 37 tray 38 holding body 39 guide piece 40 guide rail 41 biasing spring 48 replacing device 49 cassette 50, 51, 54, 55 guide rail 53 push Body 56 Pull-out mechanism 58 Posture changing means 59 Clamping tool 61 Endless chain 62 Drive motor 64 Rotary rear cheater

Claims (2)

[Claims] 1. A flexible membrane set detachably attached to a side surface or a bottom surface of a paint tank, the flexible membrane having an insertion hole into which a thin rod-shaped body such as chopstick material can be inserted into the paint tank from its tip. A flexible film set in a coating device for a thin rod-shaped body such as chopsticks, which comprises a pair of front and back support plates for holding the flexible film with a frame hole larger than the insertion hole so that the flexible film cannot be displaced. . 2. On the outside of the side surface or bottom surface of the paint tank,
A holding means for elastically holding a pair of facing edges of the flexible film set is provided, and a pushing body for pushing the flexible film set between the holding means and the paint tank is a paint tank. The replacement device for the flexible membrane set according to claim 1, wherein the replacement device is configured to move in a perspective manner substantially parallel to a side surface or a bottom surface of the flexible membrane set.