JPS6174688A - Dust removing and washing apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to various objects to be processed, such as cleaning and removing dust from printed circuit boards to prevent disconnections and short circuits prior to wiring printing 1-. In order to continuously and efficiently carry out the dust removal and cleaning process as well as to ensure a high level of dust removal, a driven conveyor is installed in the dust removal chamber to transport the objects to be processed from the entrance at one end to the exit at the other end. A partition wall is provided to partition the dust removal chamber in the transport direction of the conveyor, and a static elimination bar is provided on a part of the dust removal chamber partitioning portion on the entrance side, and a dust removal bar is provided to remove static electricity from the objects to be processed. The remaining part is provided with a static elimination bar similar to the above, and a gas circulation type air supply device that sprays dust removal clean gas onto the objects to be treated, and the air supply device is connected to the dust removal chamber section. The present invention relates to a device configured such that the internal pressure of the conveyor is higher than the atmospheric pressure of the conveyor.

[Conventional technology]

Conventionally, a brush for dust removal was always rotated in a fixed direction to make sliding contact with the object to be treated (for example, Japanese Patent Application Laid-open No. 59-1999)
5694).

[Problem that the invention seeks to solve]

However, if the article to be treated is thin and easily bends,
When the brush is rotated in the forward direction acting on the object to be processed in its transport direction, the rear end of the object to be processed is forcibly bent by the brush, and conversely, the brush is rotated in the direction of transport relative to the object to be processed. When it rotates in the opposite direction, which acts in the opposite direction,
The front end of the article to be treated is forcibly bent by the brush, and in either case, there is a risk of transportation trouble or damage to the article to be treated, so there is room for further improvement.

An object of the present invention is to enable the article to be processed to be transferred satisfactorily without any trouble caused by brushes, even if the article is easily swallowed.

[Failure to solve the problem]

The characteristic configuration of the present invention is that, with respect to the brush that removes dust from the article to be treated, on the -1- hand side in the transport direction of the article to be treated,
A sensor is provided to detect the front end and rear end of the article to be treated, and based on the information from the sensor, when the front end of the article to be treated is detected, the brush moves in the direction of movement of the article to be treated. so that the rotation is in the forward direction acting on the
A controller is provided for automatically switching the direction of rotation of the brush so that when the rear end of the article to be treated is detected, the brush rotates in the opposite direction, acting on the article to be treated in a direction opposite to the direction of transport thereof. The functions and effects are as follows.

[For production]

In other words, when the front end of the object to be processed approaches the brush, the brush rotates in the forward direction, so the brush slides into contact with the front end of the object to be processed from the rear side to the front, and the front end of the object is caught by the brush. The forced bending action is eliminated. Furthermore, when the rear end of the article to be treated approaches the brush, the brush rotates in the opposite direction, so the brush stops sliding against the rear end of the article to be treated from the front side to the rear side, and the brush is caught. The forceful bending action of the rear end due to this is eliminated.

The sensor and controller automatically switch the direction of rotation of the brush at the appropriate timing.
It is possible to reliably eliminate bending of the front and rear ends of the article to be processed by the brush.

〔Effect of the invention〕

As a result, it is now possible to clean and remove dust from thin or flexible objects without the negative effects of brushes, and it is now possible to provide a device with even greater versatility and dust removal performance. became.

〔Example〕

Next, an embodiment will be explained with reference to FIGS. 1 to 5.

A pair of left and right partition walls (4a) are installed inside the case (3), which can be moved and fixed by casters (1) and stoppers (2).
, (4b) are provided, and left and right air circulation chambers (5) 3(
6), forming a dust removal chamber (7) and a blower storage chamber (8),
The dust removal chamber (7) and the blower storage chamber (8) are separated by a primary filter (9) that is not too narrow, and the case (3) is opened from an inlet (10) formed at one end of the case (3).
) to the outlet (11) formed at the other end of the article ('A).
A path for transporting the dust one round is formed by a drive type conveyor (12) provided in the case (3), and the dust removal chamber (7) is
A partition wall (13a) partitioning into three chambers in the transfer direction of
), (13b) are provided, and the blower storage room (8) and air circulation room (5), (6) are connected to the conveyor (12).
A partition wall (14a) that divides into two chambers in the direction of transfer of (14a), (1
4b) and (14c) are provided in series with the dust removal chamber partition partition wall (13b) on the exit side.

Articles to be processed (A) transported by conveyor (12)
Defrosting parlors (15a), (1'5b) configured to remove static electricity from the article (A) by ejecting ionized air by direct current discharge from a strip nozzle so as to act on the article (A).
), (15c), and the nozzles (16a), (16b), (16c) that blow clean air are connected to the dust removal chamber section (7a), (7b), (7c).
), and a rotary-driven brush (17a) for dust removal is provided only in the dust removal chamber section (7a) facing the entrance (10).
) and (17b) are provided at the top and bottom of the path, respectively, and one storage chamber section (8a) is used for the entrance side, the central dust removal chamber section (7a), (7b), and left and right air circulation. In the chamber division parts (5a) and (6a),
In addition, the other storage chamber section (8b) is connected to the dust removal chamber section (7C) on the exit side and the left and right air circulation chamber section (5).
a): (6a) is connected to the air circulation chamber compartments (5a), (5b), (6a), (6), respectively.
b) secondary filters each consisting of a high performance filter;
(18) 4 installed, with the first blower (+9a),
Entrance side and central dust removal chamber section (7a), (7b
) to the primary and secondary filters (9).

After cleaning with (18), nozzle (16a), (1
6b) to those dust removal chamber partition parts (7a), (
7h), and the second blower (19b) blows the air from the dust removal chamber section (7c) on the outlet side to the first and second air blowers. After cleaning with filters (9) and (1B), clean nozzle (16).
c), the dust removal chamber section (7c) is again sprayed onto the article (A) to be treated.

The nozzles (16a), (16b), and (16c) are each removable so that the direction can be changed freely.

(16c) Attach a flow rate control valve to each of the dust removal chamber sections (7a), (7t+), and (7c) to blow air in a state suitable for removing dust from articles, so that the blown air is smoothly and unevenly distributed. Less than 1st order filter (9)
At the same time, the internal pressure of the dust removal chamber sections (7a), (7b), and (7c) is set to be higher toward the lower side of the conveyor (12) in the transfer direction, and to be lower than atmospheric pressure. It is constructed to be high.

A large number of conveyor belts (12a), (12b), (
12c) is provided, so that even the object to be processed (A) which is easily bent can be transferred satisfactorily.

Of the conveyor belts, those (12a) and (1) lined up in the transfer direction
'2b) A belt absent area (B) is formed between the belt absent areas (B), and a brush (t7a), (17
b) are arranged to prevent mutual abrasion between the brushes (17a), (17b) and the belt (12aL (12b)), and the article (A) to be treated is brushed (17a) with gas pressure.
a) Nozzle (24a) pressed against <17b)
, (24b) ', brush (17a) , (17
b) In a state where the belt is absent (
B), and the article to be processed (
A) to be able to transfer well, and to be able to transfer the article to be processed (
Brush evenly (17a), (
1, 7b) should be in effect.

A brush (17aL (17b) is attached to one end of an arm (26) swingably supported by a transmission shaft (25) for the brush (17aL), and a balance weight (27) is attached to the other end of the arm (26). Hanging Hane (2B)
The brushes (17a),' (17h) are connected to each other, and configured so that the holding force of the suspension spring (28) can be adjusted by an adjustment part (29) consisting of a bolt and a nut.
This is so that the pressing force applied to the article (A) by the brushes can be adjusted appropriately, and a predetermined pressing force can be maintained even if the brushes (17a) and (17b) are worn out.

A brush (17a) in the direction of transport of the article to be treated (A)
, Near the upper side of (17b), there is a contact type sensor such as a limit switch or a non-contact type sensor such as a photoelectric type (3 (1
), a means (31a) for determining whether the front end (A1) and rear end (A2) of the article to be processed (A) have arrived based on information from the sensor (3o);
Brush (17a) based on information from 1a).

A controller (31) having an output means (31b') for operating the rotational direction switching device (32) of (17b) is provided, so that when the front end (AI) of the article to be processed (A) is detected, As shown in FIG. 4, the brushes (17a) and (17b) are rotated in the forward direction acting on the article (A) to be treated in the transport direction, and as shown in FIG. When the rear end (A2) of A) is detected, the brush (17
a) and (17b) are configured to rotate in the opposite direction, acting on the article (A) to be processed in a direction opposite to the direction in which it is transported.

The parts of the bulkheads (4a) and (4b) to which the conveyor (12) and brushes (17a) and (17b) are attached are connected to the conveyor drive and brush drive electric motors, and the transmission cover (20). In addition to being integrally attached to the case (3) so that it can be attached and detached,
Case (3) An inspection port having a grounded transparent lid (21) is formed on the A1 side of the case, so that processing can be easily performed when the article to be processed (A) is clogged.

The electric motors for driving the conveyor, brushes, and blower are each equipped with a thermal relay and an earth leakage preventer, which can be installed near the exit (11) in case of clogging of the processed article (A). When an electrostatically charged article (A) is detected by the electrostatic sensor (33), the entire device is automatically stopped and the abnormality warning light (2) is activated.
2) is configured to blink to notify the occurrence of a trouble and the location of the trouble using a color display or the like.

A sensor (23) for detecting the presence or absence of an object, such as a phototube type, is installed at the entrance (1).
0), and when the sensor (23) detects the presence of the article (A), the conveyor (12) and the brush (1) are immediately activated.
7a), (17b), blower (19a), (19
b), Static elimination (15a), (15b), (1
5c) etc. automatically, and the sensor (23
) detects the absence of article (A) for a set period of time, the conveyor (12), brushes (17a), (17b) are removed at an appropriate timing so that article (A) does not remain in the device.
, blower (19a), (19b), static elimination bar (1
5a), (15b), (15c), etc., are configured to be automatically stopped.

Various operating tools and the above-mentioned automatic controllers for safety and power saving are arranged in a removable operation box (24) all year round, so that operations, repairs, inspections, etc. can be performed easily.

[Another example]

Next, another example will be described.

The specific structure of the conveyor (12) can be changed as appropriate,
Furthermore, a conveyor guide may be provided as appropriate depending on the size and shape of the article (11).

The number of compartments in the dust removal chamber (7) may be two or more;
When partitioning into more than one room, the relationship between the number of brushes (17aL (17b) and those without) may be appropriately determined as necessary.

The type of clean gas to be sprayed onto the article to be treated (A) can be selected as appropriate, and the specific configuration of the air supply device (9, 19, 18, 16) that circulates the gas to the dust removal chamber (7) can be selected as needed. can be changed freely.

The mounting structure, drive configuration, forward/reverse switching configuration, etc. of the brushes (17a) and (17b) can be changed appropriately, and a sensor ( 30) and control H (31) can also be changed appropriately.

It is also possible to freely add a structure such as making the case (3) covered with a sound absorbing material to make it soundproof, or omit a part of the structure.

The type, shape, size, etc. of the article to be treated (Δ) are not limited, and it can be applied to, for example, biological cleaning of film sheets in pharmaceutical packaging lines.

[Brief Description of the Drawings] Figs. 1 to 3 show embodiments of the present invention, in which Fig. 1 is a schematic vertical sectional view, Fig. 2 is a sectional view taken along line n-■ in Fig. 1, and Fig. 3 is a schematic longitudinal sectional view.
The figures are a sectional view taken along the line lll-111 in Figure 1, Figures 4 and 5.
The figure is a conceptual diagram of the main parts. (7)・・・Dust removal room, (7a), (7b)
, (7c)... Dust removal chamber division part, (9,19
, 18, 16) , (9, 19b, 18b, 16
b) Air supply device, (10) Inlet, (11) Outlet, (12) Conveyor, (13a, 13b)・・・・・・Bulkhead, (1
5aL (15b), (15c) -=static elimination bar, (
17a), (17b) --Brush, (30)...
...Sensor, (31) ...Controller, (A
)...Product to be processed, (A,)...Front end of the product, (A2)...Rear end of the product.

Claims (1)

[Claims] A driven conveyor (12) for transporting the article to be processed (A) from the entrance (10) at one end to the exit (11) at the other end is provided in the dust removal chamber (7), and the dust removal chamber (7) Partition walls (13a), (13) partitioning in the transport direction of the conveyor (12)
b), and the dust removal chamber partition parts (7a), (7b), (7
c), a part (7a) on the side of the inlet (10) includes a static elimination bar (15a) that removes static electricity from the article to be treated (A), and a rotationally driven brush that removes dust from the article to be treated (A). (
17a), (17b), and the remainder (7b), (7c
) are provided with static elimination bars (15b), (15c) similar to those described above, and gas circulation air supply devices (9, 19, 18, 16) for spraying clean gas for dust removal onto the article to be treated (A),
The air supply device (9, 19, 18, 16) is configured such that the internal pressure of the dust removal chamber division portions (7a), (7b), (7c) becomes higher toward the downstream side of the conveyor (12). The dust removal cleaning device has a front end (A_1) and a rear end (A_2) of the object to be processed (A) on the upper side of the brushes (17a) and (17b) in the direction of transfer of the object to be processed (A). ) is provided, and when the front end (A_1) of the article to be treated (A) is detected based on the information from the sensor (30), the brushes (17a), (17b) is rotated in a forward direction acting on the article to be processed (A) in its transport direction, and
When the rear end (A_2) of the article to be processed (A) is detected,
The brushes (17a) and (17b) are the article to be treated (A)
The dust removal and cleaning device is provided with a controller (31) that automatically switches the direction of rotation of the brushes (17a) and (17b) so that the brushes (17a) and (17b) rotate in the opposite direction so that the brushes (17a) and (17b) rotate in the opposite direction.