JP2559797B2 - Flat plate suction transfer device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a flat plate suction transfer device for transferring a flat plate-like work such as a ceramic plate in a state where it is adsorbed on a transfer surface, and in particular, its size is indefinite. The present invention relates to a flat plate adsorption transfer device applied to wet grinding of small ceramic thin plates.

(Prior Art) In a conventional flat plate suction transfer device, a belt hole penetrating a conveyor belt is passed over a suction hole of a perforated plate attached to a transfer surface of the conveyor belt to thereby form the belt hole and the suction hole. The workpieces are attracted to the transfer surface by the suction force of the air sucked through the communicating portions.

(Problems to be Solved by the Invention) In the case of the flat plate suction transfer device, there is a problem in that the total volume of the communication portion between the belt hole and the suction hole fluctuates significantly and an excess or deficiency of the suction force occurs. However, there is a problem that the suction force is significantly reduced when the conveyor belt meanders or travels illegally.

An object of the present invention is to solve the above problems.

(Means for Solving the Problem) A flat plate suction transfer device of the present invention includes a first transfer belt conveyor that has a transfer surface in contact with the lower surface of a flat plate-like work and transfers the work so that the upper surface thereof is ground. , A second transfer belt conveyor which has a transfer surface in contact with the upper surface of the work and transfers the work so that the lower surface thereof is ground, and is arranged in the transfer direction of the work. Of the ventilation holes of each row having a group of ventilation holes arranged in a direction inclined at a constant angle with respect to the transfer direction of the work in parallel with each other.
The porous plate of the first suction box installed below the transfer surface of the transfer belt conveyor and the porous plate of the second suction box installed above the transfer surface of the second transfer belt conveyor each have a large number. Each of the intake holes has a group of intake holes arranged in a direction inclined with respect to the work transfer direction at a constant angle different from the inclination angle of the ventilation hole array. The air holes are provided so as to be arranged in parallel with each other at a distance smaller than that of the air holes, and the air holes are so arranged that the air holes in the air holes of the respective rows are communicated with the both porous plates. Has a configuration in which a large number of communication grooves extending in the respective inclination directions are recessed.

(Operation) In the flat plate suction transfer device having the above-described configuration, the work is transferred by the first transfer belt conveyor and the upper surface of the work is ground, and the work is transferred by the second transfer belt conveyor and the lower surface of the work is ground. To be done.
When the work is transferred by both transfer belt conveyors, the work has a predetermined number of vent holes of the transfer belt conveyor, and a predetermined number of intake holes of the multi-hole plate. Appropriate number of communication grooves 2
Are sucked through and sucked onto the transfer surfaces of both transfer belt conveyors with a stable suction force.

(Example) Next, one example of the present invention will be described with reference to the drawings.

It is applied when smoothing the front and back surfaces of a ceramic plate by removing the sand that adheres to the front and back surfaces of flat ceramic plates that are stacked and fired in multiple layers, and especially when the thickness is about 0.6 to 1.6 mm. In the grinding device K applied to grind small ceramic thin plates of indefinite size, the grinding device K
Is a loading station S1 for automatically loading one or more unprocessed work pieces with grain sand into the grinding run-in, and for continuously grinding the upper and lower surfaces of unprocessed work pieces. A grinding station S2, a washing station S3 for washing the ground work, a drying station S4 for drying the washed work, and an unloading station S5 for carrying the dried work out of the transfer line. They are arranged in order from the front.

In the transfer station S1, an endless belt 3 is rotatably hung on a supporting member 2 attached to the base 1 and is connected to a linear motor 4 attached to a lower end of the supporting member 2 so that the belt An appropriate number of work rows in which a large number of work pieces C are superposed are placed on the receiving plate 5 fixed to 3 (in this example, one to three work rows are placed). When the uppermost workpiece C is sucked and transferred one by one and the uppermost workpiece is lowered to a predetermined position, a sensor (not shown) detects this and the receiving plate 5
Rises for a certain period of time. On the other hand, a four-joint link mechanism 7 having a hand 6 attached to the upper end is mounted on the base 1 so as to be tiltable in the front-rear direction, and the hand 6 is attached to a suction device (not shown) for adsorbing a work. A proper number (three in this example) of suction cups 9 connected to each other are arms 10.
Is attached via. The hand 6 is connected to the piston shaft of the upper air cylinder 11 pivotally supported by the upright portion 6a of the hand 6, and the rear link 7a of the four-node link mechanism 7 is connected to the piston shaft of the lower air cylinder 12. The hand 6 reciprocally tilts forward and backward and downward and backward by the forward and backward movement of the piston shafts of both air cylinders 11 and 12, and each time the hand 6 reciprocally tilts, the work C at the uppermost end of the work row on the receiving plate 5 is moved. Is lifted by the suction cup 9 and transferred to the starting end of the grinding station S2.

A box-shaped machine base 14 is installed in the grinding station S2, and a box-shaped cover 15 that covers the machine base 14 in a hermetically sealed manner is placed on the machine base 14. An endless first transfer belt conveyor 16 having a transfer surface 17 formed on the upper end of the machine base 14 so as to circulate and rotate with respect to the conveyor rollers 16a to 16a and traveling straight ahead in the horizontal direction; Laura 18a
~ 18a are rotatably hung on the first transfer belt conveyor 16 and are installed upside down with respect to the first transfer belt conveyor 16 and run straight at substantially the same horizontal level as the transfer surface 17 of the first transfer belt conveyor 16. An endless second transfer belt conveyor 18 having a transfer surface 19 formed on the lower side is arranged in front and behind in a state in which both transfer surfaces 17 and 19 are partially superposed. The transfer belt conveyors 16 and 18 are arranged in a zigzag pattern at equal intervals in the transfer direction of the work C and in a direction orthogonal to the transfer direction, and at equal intervals in a direction inclined by 45 ° with respect to the transfer direction. A large number of vent holes 20 to 20 are provided so as to penetrate therethrough.

Below the transfer surface 17 of the first transfer belt conveyor 16, a hollow first suction box 21 fixed to the machine base 14 is attached along the transfer surface 17 for vacuum-adsorbing the work C to the transfer surface 17. On the other hand, on the upper side of the transfer surface 19 of the second transfer belt conveyor 18, there is provided a hollow second suction box 22 fixed to the machine base 14 for vacuum-adsorbing the work C on the transfer surface 19.
It is installed along with 19. Both suction boxes 21 and 22 are provided with a blower 32 installed on one side of the transfer line for sucking the air in both suction boxes 21 and 22, and a tank 33 for separating the moisture sucked together with the air is in the middle. Are connected to each other via ducts 34, 34 arranged in. The perforated plates 21a, 22a respectively arranged at the upper end of the first suction box 21 and the lower end of the second suction box 22 are linearly arranged at equal intervals in the transfer direction and the direction orthogonal to the transfer direction, and are transferred. A large number of intake holes 24 are linearly arranged at a constant angle and at equal intervals in a diagonal direction with respect to the direction. The arrangement interval K4 of each vertical intake hole row 52 in which the intake holes 24 are arranged in the transfer direction is set to be twice the arrangement interval K3 of the horizontal intake hole row 53 in which the intake holes 24 are arranged in a direction orthogonal to the transfer direction. In addition, the oblique intake hole rows 54 in which the intake holes 24 are arranged in the oblique direction are arranged in parallel at an inclination angle A different from the inclination angle B of the oblique ventilation hole rows 51 in the oblique direction. In order to connect the intake holes 24 in the diagonal intake hole array 54 to the perforated plates 21a and 22a, the intake holes 24 in the oblique intake hole array 54 are inclined at an inclination angle equal to the inclination angle A of the oblique intake hole array 54.
Communication grooves 25, which are obliquely recessed along the arrangement direction, are juxtaposed at equal intervals, and each communication groove 25 intersects the diagonal ventilation hole array 51 of the transfer belt conveyors 16 and 18 at a constant angle. The vent holes 20 of both transfer belt conveyors 16 and 18 are within the area of both transfer surfaces 17 and 19 corresponding to the area of the work, that is, within the area of both transfer surfaces 17 and 19 surrounded by the contour of the work C. Part of each vent hole 20 closed by the porous plates 21a, 22
The vent hole 20 which is communicated by being overlapped with a part of the communication groove 23 of a at all times, and the total cross-sectional area of the vent hole 20 which overlaps the communication groove 23 is always at least N times the vent hole 20 (N = 4 in this example) N × π. (D / 2)
^It is set to be ² or more (D is the hole diameter of the vent hole 20),
The work C is sucked toward both suction boxes 21 and 22 through the suction hole 24, the communication groove 23, and the ventilation hole 20 and horizontally transferred while being sucked onto the transfer surfaces 17 and 19. Further, in this example, the hole diameter D of each vent hole 20 and each intake hole 24 is 4 mm, the groove width H of the communication groove 23 is 4 mm, the inclination angle A of the communication groove 23 is 22.5 °, and the diagonal passages are arranged diagonally. The inclination angle of the pore row 51 is 45 °, the arrangement interval K1 of the vent holes 20 in the vertical vent row and the ventilation 20 in the lateral vent row.
The arrangement interval K2 of each is 17 mm, and the intake holes in the vertical intake hole row 52 are
The arrangement interval K3 of 24 is set to 8.5 mm, the arrangement interval K4 of the intake holes 24 in the lateral intake hole row 53 is set to 17 mm, and the position of each vent hole row arranged in the transfer direction is arranged in the transfer direction. It is set so as to be arranged at an intermediate portion of both vertical intake hole rows that respectively match or are adjacent to the positions of the vertical intake hole rows (see FIG. 5).

In order to grind the upper surface of the work C that is adsorbed on the transfer surface 17 of the first transfer belt conveyor 16 and transferred, it is formed in the shape of a soft disk which is opposed to the first transfer belt conveyor 16 and has elasticity in the radial direction. The first grinding wheel 26 is installed on the upper side of the transfer surface 17, and the lower surface of the work C that is adsorbed and transferred to the transfer surface 19 of the second transfer belt conveyor 18 is continuously ground immediately after the upper surface is ground. The second grinding wheel 27, which is formed in the shape of a soft disk having elasticity in the radial direction, is installed below the transfer surface 19. Both grinding wheels 26, 27 are formed, for example, by cutting a roll body in which a nonwoven fabric impregnated with the grinding wheels is wound in multiple layers. The first grinding wheel 26 is connected to an oscillation mechanism 28 driven by a motor 29, and is rotationally driven by a motor 30 via a belt while reciprocating in the axial direction, and the second grinding wheel 27 is driven by a motor 31 by a belt. It is rotationally driven via.

The discharge nozzles 36 and 37, which are arranged close to the rear sides of the two grinding wheels 26 and 27, respectively discharge the grinding liquid toward the grinding portion during grinding of the work C to grind the work C in a wet state. In addition, the discharge nozzles 38 and 39 are installed to discharge the grinding liquid and remove the grinding dust from the work C, respectively. The upper and lower surfaces of the work C carried into the grinding station S2 are the first and second grinding wheels 26, 27.
Are continuously ground in a wet state and carried into the washing station S3.

The cleaning station S3 is rotatably circulated from the end of the grinding station S2 to the vicinity of the start end of the lower net conveyor 40 that is rotatably hung from the unloading station S5 and from the cleaning station S3 to the unloading station S5. The upper net conveyor 41 and the vicinity of the starting end of the upper net conveyor 41 are placed in a superposed state in order to sandwich and transfer the work. The upper circulator of the lower net conveyor 40 and the lower circulator of the upper net conveyor 41 are sandwiched between a number of pairs of pinch rollers and circulate, and are sandwiched between both net conveyors 40 and 41 and transferred. A proper number of upper and lower cleaning nozzles 42 to 42 are arranged above and below the transfer path of the work to spray the cleaning liquid toward the upper and lower surfaces of the work, respectively, and at the end of the cleaning station S3. A pair of upper and lower dewatering rollers 43 for squeezing the cleaning liquid adhering to the work are installed.

To the drying station S4 subsequent to the cleaning station S3, the workpieces carried out from the cleaning station S3 and transferred to the upper and lower surfaces of the workpiece are transferred so as to face the upper and lower sides of the transfer path so as to blow the room temperature air respectively. A pair of upper and lower primary dewatering ducts 44, 44 provided with a proper number of blowing nozzles 44a to 44a inclined with respect to the road, and a work in front of both primary dewatering ducts 44 for blowing hot air to the upper and lower surfaces of the work. Hot air ducts 45, 45 provided with appropriate numbers of blowing nozzles 45a to 45a, which are installed opposite to each other above and below the passage, are continuously provided,
Both primary dewatering ducts 44 are connected to a blower 46 installed below them, and both hot air ducts 45 are connected to blowers 47, 47 installed below them via heaters 48 and 48.

In the carry-out station S5, the end portion of the lower net conveyor 40 and the end portion of the upper net conveyor 41 are arranged in a staggered manner, and the discharge chute 49 is ground and placed on the receiving box 50 for receiving the work. The work is discharged from the end portion on the lower net conveyor 40 and is sent into the receiving box 50 through the discharge chute 49.

Next, the operation and effect of the embodiment having the above-mentioned configuration will be described.

In this example, there is a transfer surface 17 that contacts the lower surface of the flat work C, and a first transfer belt conveyor 16 that transfers the work C so that its upper surface is ground, and a transfer surface 19 that contacts the upper surface of the work C. A second transfer belt conveyor 18 for transferring the work C so that the lower surface thereof is ground is arranged in the transfer direction of the work C, and a plurality of ventilation holes are provided in each of the transfer belt conveyors 16, 18. The first transfer belt conveyor 20 is formed by penetrating 20 in parallel with each row of vent holes 51 each having a group of vent holes 20 arranged in a direction inclined at a certain angle with respect to the transfer direction of the work C. The perforated plate 21a of the first suction box 21 installed below the 16 transfer surfaces 17;
In addition, a large number of intake holes 24 are formed in the perforated plate 22a of the second suction box 22 installed above the transfer surface 19 of the second transfer belt conveyor 18, respectively, and different from the inclination angle of the vent hole row 51. The intake hole rows 54 of the respective rows, each having a group of intake holes 24 arranged in a direction inclined with respect to the workpiece transfer direction at a constant angle, are arranged at parallel intervals smaller than the parallel intervals of the vent hole rows 51. The two perforated plates 21a and 22a are provided in parallel with each other, and the intake holes 24 in each row are provided with the intake holes 24 in each row.
In order to communicate with each other, a plurality of communication grooves 25 extended respectively along the inclination direction of the intake hole array 54 are provided as recesses.

Therefore, during the grinding process of the work C, the work C is properly adsorbed and fixed to the transfer surfaces 17 and 19 of the transfer belt conveyors 16 and 18, respectively, and the positional deviation and the erroneous operation of the work C are restricted. The work C can be transferred accurately and stably, and the upper and lower surfaces of the work C can be ground accurately.

Further, the upper surface of the work C is ground while the work C is adsorbed on the transfer surface 17, and then the work C is sucked up and transferred to the transfer surface 19.
Since the lower surface of the work C is continuously ground in the state of being adsorbed on the work C, a reversing mechanism for vertically reversing the work C to grind the upper and lower surfaces continuously becomes unnecessary, which is required for continuous grinding of the upper and lower surfaces of the work C. The space can be reduced.

Particularly, in this example, a part of each ventilation hole 20 of the first and second transfer belt conveyors 16 and 18 closed by the work C is a suction hole of the perforated plates 21a and 22a of the first and second suction boxes 21 and 22. Since it is set so as to always communicate with a part of the 24 group by the communication groove 23, the fluctuation of the suction force to the work C is reduced, and the work C is accurately and stably adsorbed on both transfer surfaces 17 and 19, respectively. There is an effect that the upper and lower surfaces of the work C are transferred and uniformly ground to improve the grinding accuracy of the upper and lower surfaces of the work C.

Further, even if the transfer surfaces 17, 19 of the transfer belt conveyors 16, 18 meander, or even if the traveling position of the ventilation holes 20 is displaced due to improper traveling, each of the diagonal intake hole rows 54 arranged diagonally. Since the intake holes 24 are communicated with each other by the communication groove 23, it is possible to absorb the positional deviation of the ventilation holes 20 and always secure a predetermined suction force.

(Effect of the Invention) According to the present invention, the upper surface and the lower surface of a flat plate-shaped work are accurately adsorbed to the transfer surfaces of both transfer belt conveyors and stably transferred, and the upper surface and the lower surface of the work are not inverted. Can be properly ground.

Further, by increasing the number of ventilation holes and the number of suction holes that are communicated with each other, the work can be stably adsorbed on the transfer surfaces of both transfer belt conveyors. It is possible to accurately transfer the workpiece at a constant transfer speed and improve the grinding accuracy for grinding the upper surface and the lower surface of the workpiece.

[Brief description of drawings]

The drawings show one embodiment of the apparatus used in the present invention,
1 is an enlarged plan view of a transfer belt conveyor and a perforated plate, FIG. 2 is an enlarged vertical sectional view of the same, FIG. 3 is a side view of a grinding machine, FIG. 4 is a plan view of the same, and FIG. 5 is a loading station. FIG. 6 is a side view and FIG. 6 is a sectional view taken along line X1-X1 of FIG. 16 …… First transfer belt conveyor 17 …… Transfer surface 18 …… Second transfer belt conveyor 19 …… Transfer surface 20 …… Vent hole 21,22 …… Suction box 21a, 22a …… Perforated plate 23 …… Communication groove 24 …… Intake hole 54 …… Oblique intake hole row C …… Work

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location B65H 5/22 B65H 5/22 C (56) References JP 57-184054 (JP, A) JP-A-60-93055 (JP, A) JP-A-50-121966 (JP, A) JP-A-62-185616 (JP, A) Actual opening 63-162716 (JP, U) Actual opening Sho-55-17056 (JP, U) Actual development Sho 54-128278 (JP, U) Japanese Patent Sho 34-10816 (JP, B1) Japanese Patent Sho 43-11817 (JP, B1)

Claims (1)

(57) [Claims] 1. A first plate having a transfer surface in contact with the lower surface of a flat plate-like work, and transferring the work so that its upper surface is ground.
A transfer belt conveyor and a second transfer belt conveyor which has a transfer surface in contact with the upper surface of the work and transfers the work so that the lower surface thereof is ground are arranged in the transfer direction of the work. , A plurality of vent holes are respectively provided in parallel in a row of vent holes each having a group of vent holes arranged in a direction inclined at a constant angle with respect to the work transfer direction. The porous plate of the first suction box installed below the transfer surface of the transfer belt conveyor and the porous plate of the second suction box installed above the transfer surface of the second transfer belt conveyor each have a large number. Each of the intake holes has a group of intake holes arranged in a direction inclined with respect to the work transfer direction at a constant angle different from the inclination angle of the ventilation hole array. Ventilation The perforated plates are penetrated in parallel with each other at a parallel interval smaller than the parallel interval of the columns, and the two perforated plates are inclined so that the intake holes in the columns of the intake holes are in communication with each other. A flat plate suction transfer device, characterized in that a plurality of communication grooves extending in the respective directions are respectively provided.