JP2011051068A - Chamfering method and chamfering device for plate material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To shorten the cycle time from start of grinding a sheet of a plate material until the subsequent plate material can be ready for grinding, without degrading the machining quality. <P>SOLUTION: Movable carriages 2 fixed with a plate glass G and grinding wheels W are simultaneously moved from a receiving position to a delivering position of the plate glass G. While abutting and grinding the sides of the edge surfaces of the plate material (right and left side edge surfaces G5, G6) which are parallel to the moving direction of the movable carriages 2, the grinding wheels W move slower than the movable carriage 2 at a grinding speed v which is the relative moving speed with respect to the speed of the movable carriage 2. While the plate glass G on the movable carriages 2 is delivered to a fixed device at the delivering position, the rotation of the grinding wheel W is reversed and the grinding wheel W grinds the remaining portion of the edge surfaces of the plate glass G while retracting to the receiving position at the grinding speed v. Thereafter, the grinding wheels W is retracted to the delivering position. On the other hand, the movable carriages 2 is retracted to the receiving position by the time the grinding wheels W retract to the delivering position and the subsequent plate glass G is received. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention provides at least one end face for a flat plate material such as an FPD (flat display) such as a liquid crystal panel, a plasma panel, a solar cell panel, an organic EL (electric luminance) panel, a large plate glass, or a semiconductor wafer. The present invention relates to a chamfering method and a chamfering device for a plate material that is chamfered by grinding.

  As a conventional chamfering device, for example, as shown in the horizontal chamfering device 100 shown in the plan view of FIG. 5A and the enlarged sectional views of FIG. 5B and FIG. A movable carriage 103, 104 that conveys, for example, plate glass G as a plate material, a turntable 105 that changes the direction of the plate glass G, and a grinding wheel that chamfers the end surface of the plate glass G. What is provided with 106a, 106b is known.

  Specifically, a turntable 105 is disposed at the center, and movable carriages 103 and 104 are disposed between the turntable 105 and each of the buffer conveyors 101 and 102, and the plate glass received from the cutting / divider exit buffer conveyor 101. G is transferred to the washing machine inlet buffer conveyor 102 via the turntable 105. Further, a pair of grinding wheels 106a and 106b are arranged between the turntable 105 and each of the buffer conveyors 101 and 102 in a state in which a predetermined interval is provided in a direction orthogonal to the conveying direction of the glass sheet G. . The interval between the pair of grinding wheels 106a and 106b can be changed according to the width of the glass sheet G.

  According to this chamfering apparatus 100, the rectangular glass sheet G received from the cutting / divider exit buffer conveyor 101 is adsorbed by the suction cup 107 of the movable carriage 103 so that the pair of opposing sides are parallel to the conveying direction. While fixing and moving the movable carriage 103 to the turntable 105, the plate glass G is passed between the right and left grinding wheels 106a. At this time, the end faces g1 and g2 on the left and right sides are brought into contact with the grinding wheel 106a, and the end faces g1 and g2 are ground to perform chamfering. Then, after the plate glass G is moved from the movable carriage 103 to the turntable 105 and rotated by 90 ° in the horizontal direction to change the direction, the plate glass G is moved to the next movable carriage 104 and fixed by suction by the suction cup 108. It is conveyed to the washing machine inlet buffer conveyor 102. While the plate glass G is transported to the washer inlet buffer conveyor 102, the sheet glass G is passed between the left and right grinding wheels 106b, and the remaining two side surfaces g3 and g4 are ground and chamfered. In this way, the plate glass G on which the end faces g1, g2, g3, and g4 of the four sides are chamfered is moved from the moving carriage 104 to the washing machine inlet buffer conveyor 102, and the delivery is completed (see, for example, Patent Document 1).

  In contrast to the glass moving type horizontal chamfering apparatus 100 as described above, there is a grindstone moving type horizontal chamfering apparatus 110 in which the grinding wheels 109a and 109b move. That is, as shown in the plan view of FIG. 6A and the cross-sectional view of FIG. 6B, the turntable 105 that changes the direction of the glass sheet G, the conveyors 111 and 112 that convey the glass sheet G, and the grinding wheels 109a and 109b. And. Specifically, a turntable 105 is disposed at the center, and conveyors 111 and 112 are disposed between the turntable 105 and the buffer conveyors 101 and 102, respectively. Each of the conveyors 111 and 112 includes a suction cup 113 for adsorbing and fixing the plate glass G. On both sides of the conveyors 111 and 112, movable grinding wheels 109a and 109b that move in parallel along the conveyors 111 and 112 are disposed. The distance between the left and right grinding wheels 109a and 109b can be changed according to the width of the glass sheet G.

  According to the chamfering apparatus 110, the rectangular plate glass G received from the cutting / cutting machine outlet buffer conveyor 101 is placed on the conveyor 111 so that a pair of opposing sides are parallel to the moving direction of the grinding wheel 109a. The left and right grinding wheels 109a are moved along the glass sheet G, and the end faces g1 and g2 on the left and right sides are ground and chamfered. Thereafter, the suction and fixation of the plate glass G is released, and the plate glass G is moved to the turntable 105 and rotated by 90 ° in the horizontal direction. The plate glass G whose direction has been changed is moved to the next conveyor 112, and the plate glass G is sucked and fixed on the conveyor 112. Then, the left and right grinding wheels 109b are moved along the plate glass G, and the remaining two side surfaces g3 and g4 are ground to chamfer. In this way, the plate glass G with the chamfered end faces g1, g2, g3, and g4 on the four sides is moved to the washing machine inlet buffer conveyor 102 to complete the delivery.

Japanese Patent No. 3611563 (6th page, FIG. 2)

  However, in order to maintain quality, there is a limit to the grinding speed, and in the above-described horizontal chamfering apparatuses 100 and 110 of the glass moving type and the grindstone moving type, the glass plate G or the grinding wheels 106a and 106b (or 109a and 109b) Therefore, it is difficult to shorten the cycle time from the time when one sheet glass G is ground until the next sheet glass G can be ground. Specifically, as common conditions, if the grinding speed of the glass sheet G is 3 m / min, the moving distance of the moving carriage is 3 m, and the carriage origin return time is 4 seconds, the horizontal moving chamfering apparatus 100 of the glass moving type is schematically shown in FIG. As shown in the figure, the time required for one sheet glass G to pass through the grinding wheel 106a is 1 minute (see FIGS. 7A and 7B). Then, it takes 1 second to release the suction at the delivery position, 0.5 second to return the suction cylinder (not shown), and 4 seconds to return the carriage origin (receiving position) (see FIG. 7C). In addition, before the moving carriage returns to the origin and adsorbs the next glass plate G, the alignment output (not shown) takes 0.5 seconds, the adsorption cylinder exits 0.5 seconds, the adsorption 1.5 seconds, and the alignment return 0.5 seconds. It takes 3 seconds. Therefore, a total of 1 minute and 8.5 seconds are required.

  On the other hand, in the grindstone moving type horizontal chamfering apparatus 110, as shown in the schematic diagram of FIG. 8, the grinding wheel 109a moves and the time required for grinding is one minute (see FIGS. 8A and 8B). Then, after 1 second is required for releasing the suction and 0.5 second is required for returning the suction cylinder (not shown), the ground plate glass G is transported, and at the same time, 15 seconds are required until the next plate glass G is transported. . At the same time, the grinding wheel 109a also returns to the original position in 4 seconds, but the transport time of the next sheet glass G requires more time, so it does not take into account the cycle time (see FIG. 8C). Then, it takes 1 second to complete alignment (not shown) for the next glass plate G and 2 seconds to complete the suction (see FIG. 8D). Therefore, a total of 1 minute and 19.5 seconds are required.

  Thus, there is a limit to the grinding speed, and since it takes time to complete the grinding of the next sheet glass after the grinding of one sheet glass G, the conventional glass moving type and The grindstone moving horizontal chamfering apparatuses 100 and 110 have a problem that it is difficult to shorten the cycle time.

  Accordingly, the present invention provides a chamfering method and a chamfering apparatus for a plate material capable of shortening the cycle time from the start of grinding of a single plate material until the next plate material can be ground without lowering the processing quality. The purpose is to provide.

  In order to solve the above-mentioned problem, the invention of claim 1 is a method for chamfering a plate material in which at least one side of the plate material is chamfered, and the plate material is moved from a receiving position of the plate material to a delivery position. Relative to the moving plate material at a lower speed than the moving speed of the plate material while performing a grinding operation by rotating the grinding tool in a specific direction by contacting at least one side of the plate material parallel to the moving direction of the plate material A step of moving the moving tool to a predetermined grinding speed v, and holding the plate at the delivery position, the grinding tool is continuously rotated in the specific direction and the receiving is performed at the speed v. A step of grinding the remaining portion of the end face of the plate material while moving in the direction of the position, and the next plate material to the receiving position until the grinding operation of the end face of the plate material is completed. Type, characterized in that it comprises a step of moving the grinding tool to the next plate.

  According to the plate chamfering method of the present invention (Claim 1) having the above-described configuration, it is possible to simultaneously grind almost half of the plate material end face while moving the plate material from the receiving position to the delivery position. it can. Then, the remaining part of the end face of the plate can be ground while moving the grinding tool in the reverse direction while holding the plate at the delivery position. Further, a new next plate material can be introduced into the receiving position by the end of the grinding work of the plate material end face. Therefore, it is possible to return to the receiving position of the grinding tool and prepare for processing the next plate material while chamfering the end surface of the plate material, so that the cycle time from the start of grinding until the next plate material can be ground Can be shortened. Moreover, since the grinding speed can be kept constant, the quality of the chamfering process is not deteriorated.

  The chamfering method according to the present invention will be described using, for example, the common conditions in the background art described above. When the grinding speed is 3 m / min, the grinding tool is moved from the receiving position to the delivery position at a speed of 3 m / min. The moving carriage is moved at a speed of 6 m / min while moving at min. Therefore, when the plate material is moved to the delivery position, half of the chamfering process is completed. The time required so far is 30 seconds. Then, while holding the plate material at the delivery position, the direction of movement of the grinding tool is changed to the opposite direction, and the other half of the plate material end surface is ground while retreating to the receiving position at a speed of 3 m / min. After the work is completed, the grinding tool is returned to the receiving position. By the time the grinding tool returns to the receiving position, the next new plate material can be received to prepare for the processing of the next plate material. Therefore, the cycle time from the start of grinding of the first plate material until the next new plate material can be ground is about 1 minute. In this way, the cycle time can be greatly shortened.

  In this case, as described in claim 2, the plate member has a quadrangular shape and is moved so that a pair of opposing sides coincides with the moving direction, and each end surface of the opposing pair of sides is moved. , And can be ground by the grinding tool arranged corresponding to each.

  In this way, the four sides of the square plate material can be chamfered by grinding the two opposite sides of the plate material, greatly reducing the time required for chamfering per sheet. be able to.

  In order to solve the above problems, a chamfering device for a plate material according to the present invention (Claim 3) is a chamfering device for a plate material that chamfers at least one end surface of the plate material, from the receiving position to the delivery position of the plate material. , Transporting the plate material in a fixed state, returning to the receiving position and receiving the next plate material, a fixing device for holding the plate material delivered from the movable carriage at the delivery position, and the receiving From the position to the delivery position, the moving speed is lower than that of the movable carriage and the relative movement speed with respect to the movable carriage moves at the grinding speed v, and reverses at the delivery position to grind the remaining portion of the end face of the plate at the speed v. A grinding tool that grinds while moving and then returns to the receiving position, and the movable carriage transfers the plate material to the fixing device at the delivery position, and then the grinding tool. Characterized by returning to the receiving position faster than Le.

  If done in this way, the invention of claims 1 and 2 can be carried out by the apparatus of claim 3. That is, while performing the chamfering operation of the end face of at least one side of the plate material, the plate material can be moved to the delivery position, the grinding tool can be returned to the reception position, and the conveyance mechanism can be moved to the reception position. Can be restored. Further, when the grinding tool finishes the grinding operation and returns to the receiving position, the moving carriage has returned to the receiving position and is receiving the next new plate material. Can be prepared. Therefore, since the cycle time from the start of grinding of the one plate material until the next plate material can be ground is substantially the same as the processing time of one plate material, the cycle time can be shortened. it can. Moreover, since the grinding operation can be performed at a predetermined grinding speed v, the quality in the chamfering process is maintained and does not deteriorate. Further, since the chamfering operation is performed on the remaining portion of the end face of the plate by the grinding tool that moves in the opposite direction, the conveyance distance of the plate, that is, the distance from the receiving position to the delivery position is minimized. Therefore, the chamfering device can be made compact.

  As described in claim 4, the grinding tools are arranged in pairs in a direction perpendicular to the moving direction of the movable carriage, and the predetermined intervals are arranged in the plate material. It can be the space | interval which can grind each said board | plate material end surface of the two sides which face each other.

  In this way, since the square plate material can be chamfered by grinding two opposing sides, the time required for processing per sheet can be shortened.

  According to a fifth aspect of the present invention, the movable carriage has a first fixed sucker that sucks and fixes the plate material, while the fixing device has a second fixed sucker that sucks and fixes the plate material, At the delivery position, after the plate material of the movable carriage is sucked and fixed by the second fixed sucker of the fixing device, the suction and fixation of the plate material by the first fixed suction plate of the movable carriage is released. May be.

  In this way, after the plate material is moved from the receiving position to the delivery position by the movable carriage, the adsorption of the plate material of the movable carriage is released, so that the delivery of the plate material from the movable carriage is easy and reliable. Can be done.

  Since the chamfering method and the chamfering apparatus for a plate material according to the present invention have the above-described configuration, the following excellent effects are achieved.

  In other words, since chamfering can be performed in a shorter time than conventional glass moving type and grinding tool moving type chamfering devices while maintaining processing quality, liquid crystal panels, plasma panels, solar cell panels, organic EL ( It is possible to increase the production efficiency of flat plate materials such as FPD (flat display) such as electric luminance) panels, large plate glass, and semiconductor wafers. Since the grinding tool is inverted at the delivery position and continuously grinds the end face of the plate material, the conveyance distance of the plate material may be short, and the chamfering device can be made compact. Further, if the two side plates of the plate material can be ground simultaneously by a pair of grinding tools, the production efficiency can be further improved.

It is the schematic which shows one Embodiment of the chamfering processing method of the board | plate material which concerns on this invention. (A) is a side view of a grinding wheel, (b) is an explanatory view showing a state where a plate material end face is chamfered, and (c) is a partially enlarged view showing a plate material end face after chamfering. It is a side view which shows one Embodiment of the chamfering apparatus of the board | plate material which concerns on this invention. (A) is explanatory drawing which shows the state which is chamfering the board | plate material end surface, (b) is the elements on larger scale which show the board | plate material end surface after chamfering. (A) is a top view which shows the conventional glass movement type horizontal type chamfering apparatus, (b) is an XX direction arrow expanded sectional view in the top view of (a), (c) Y- in the top view of FIG. It is a Y direction arrow expanded sectional view. (A) is a top view which shows the conventional grindstone movement type horizontal type chamfering apparatus, (b) is a ZZ direction arrow expanded sectional view in the top view of (a). It is the schematic which shows the chamfering processing method of the conventional glass movement type board | plate material. It is the schematic which shows the chamfering processing method of the conventional grindstone moving type board | plate material.

  First, an embodiment of a method for chamfering a plate material according to the present invention will be described with reference to FIGS. 1 and 2.

  FIG. 1 is a conceptual diagram showing a method for chamfering a plate material. Reference numeral G in the figure denotes a rectangular plate glass as a plate material, reference numeral W denotes a grinding wheel for grinding the end face of the plate glass G, and reference numeral A denotes a fixed suction cup for the plate glass G. In FIG. 1A, a pair of left and right rectangular glass plates G are arranged on a movable carriage (not shown) so that the direction of movement of the glass sheet G is parallel to a pair of opposing sides. The left fixed side and the right side are attracted and fixed by the first fixed suction cup A. Further, a grinding wheel W that can move in parallel with the movable carriage is disposed in the left-right direction with a predetermined interval (interval that can grind the glass end surfaces of the two opposite sides of the plate glass G). As shown in FIG. 2A, the left and right grinding wheels W are a pair of grinding tools each having a disk shape having grinding grooves W1 having an inverted trapezoidal cross section over the entire circumference of the outer peripheral surface. Then, by inserting the edge portions G1 and G2 of the plate glass G into the grinding grooves W1 of the left and right grinding wheels W (see FIG. 2B), the inclined portions W2 on both sides of each grinding groove W1 The corners G3 and G4 on both sides are ground and chamfered (see FIG. 2C). These grinding wheels W can be moved in synchronization so that the distance from the receiving position is always the same.

  While the left and right grinding wheels W are rotated at a constant rotational speed, the left and right side end faces G5 and G6 of the plate glass G are brought into contact with the inclined carriages W2 on both sides of the grinding groove W1 from the front side in the conveying direction. At the same time, it is started and moved from the receiving position of the plate glass G from the previous process to the delivery position to the next process. At this time, the moving speed of the moving carriage and each grinding wheel W is such that the speed v of each grinding wheel W is slower than the moving carriage, and the relative moving speed with respect to the moving carriage is the same as the grinding speed suitable for the chamfering processing of the plate glass G. It is set to be. For this reason, the plate glass G is conveyed from the receiving position to the delivery position while the right and left side end faces G5 and G6 are chamfered by each grinding wheel W moving at a speed v (m / min). The left and right side end faces G5 and G6 of the plate glass G conveyed to the delivery position are in a state where the chamfering process has been completed by a predetermined distance from the front end in the conveyance direction. A fixing device (not shown) having a pair of left and right rectangular fixed suction cups S is disposed at the delivery position.

  After transporting the plate glass G to the delivery position, at this delivery position, as shown in FIG. 1 (b), the plate glass G sucked and held on the movable carriage by the first fixed suction cup A is moved to the second position of the fixing device. After being sucked and fixed by the fixed suction cup S, the suction fixing by the first fixed suction cup A (moving carriage) is released, and the plate glass G is transferred from the moving carriage to the fixing device. After this delivery, the left and right grinding wheels W reverse the moving direction and move the plate glass G adsorbed and held at the delivery position while moving it in the direction of the receiving position at a speed v (m / min). Chamfering is performed by grinding the remaining portions of the left and right side edge faces where the end faces G5 and G6 are not chamfered.

  The mobile carriage returns to the receiving position immediately after delivering the plate glass G to the fixing device. At the receiving position, the next plate glass G is adsorbed and fixed by the first fixed suction cup A, and the next plate glass G Prepare for chamfering. On the other hand, the left and right grinding wheels W also quickly return to the receiving position after chamfering the remaining chamfered portions of the left and right side end faces G5 and G6. Then, after the left and right grinding wheels W return to the receiving position, the movable carriage and the left and right grinding wheels W are started at the same time, and chamfering is performed while transporting the next plate glass G to the delivery position in the same manner as described above. be able to.

  After the chamfering of the left and right side end faces G5 and G6 is completed, the sheet glass G is rotated by 90 ° in the horizontal plane at the delivery position, and then the remaining chamfered portions of the end faces of the two sides are processed in the same manner as described above. Chamfering is performed. In this way, the chamfering of the glass sheet G can be performed two sides at a time, and since the processing can be performed at a constant grinding speed, the production efficiency can be improved without reducing the processing quality. .

  Next, an embodiment of a method for chamfering a plate material according to the present invention will be described with reference to FIGS. 3 and 4.

  FIG. 6 is a cross-sectional view of an example applied to a chamfering device for chamfering a rectangular plate glass G for a liquid crystal display (specifically, a cross-sectional view orthogonal to the moving direction of the plate glass G (perpendicular to the paper surface)). 3 shows. It should be noted that the same constituent elements as those described with reference to FIGS. 1 and 2 or equivalents thereof are denoted by the same reference numerals.

  In FIG. 3, reference numeral 1 denotes a chamfering device, which is configured to move from a receiving position from the previous process to a delivery position to the next process while the plate glass G is horizontally supported by the movable carriages 2 </ b> A and 2 </ b> B. The units 3A and 3B are each provided with a grinding wheel W and are arranged on the upper side of the movable carriages 2A and 2B so as to be movable in parallel with the movable carriages 2A and 2B.

  The movable carriages 2A and 2B move on two linear motion guide devices 4 (product name: LM guide) laid between the receiving position and the delivery position. Each of the linear motion guide devices 4A and 4B includes rails 5A and 5B installed on the movable bases 7A and 7B, and block-like sliders 6A and 6B that are slidably engaged on the rails 5A and 5B. These linear motion guide devices 4A and 4B are arranged in parallel at predetermined intervals on the movable bases 7A and 7B. In contrast to the two linear motion guide devices 4A and 4B provided as described above, the movable carriages 2A and 2B are placed in a state of straddling the sliders 6A and 6B of both the linear motion guide devices 4A and 4B. The sliders 6A and 6B are fixed to the sliders 6A and 6B, respectively. The movable bases 7A and 7B are provided with sliders 8A and 8B. The sliders 8A and 8B are slidably engaged with other rails 9A and 9B extending in a direction orthogonal to the rails 5A and 5B. The movable bases 7A and 7B can move according to the width.

  The movable carriage 2 is provided on the main bodies 11A and 11B, which are movably attached via the two linear motion guide devices 4A and 4B (sliders 6A and 6B), and the main bodies 11A and 11B. The suction arms 12A and 12B having the fixed suction cup A are provided. The first fixed suction cup A is disposed so as to be positioned next to the grinding wheel W so that the end portion of the plate glass G can be adsorbed and fixed from the lower side. Thereby, since the vicinity of the part adsorbed and held by the first fixed suction cup A is processed by the grinding wheel W, it can be processed stably.

  On the other hand, the processing units 3A and 3B are provided as a pair in a movable manner on the movable carriages 2A and 2B via two linear motion guide devices 14A and 14B. Each of the linear motion guide devices 14A and 14B has the same structure as the linear motion guide devices 4A and 4B, and includes rails 17A and 17B and sliders 18A and 18B slidably engaged therewith. The processing units 3A and 3B are placed on the sliders 18A and 18B, and are fixed to the sliders 18A and 18B, respectively. Each grinding wheel W has a moving speed slower than the moving carriages 2A and 2B, and the moving carriage is set so that the relative moving speed with respect to the moving carriages 2A and 2B is the same as the grinding speed suitable for the chamfering processing of the plate glass G. The processing units 3A and 3B including 2A and 2B and the grinding wheel W are moved by a driving device (not shown).

  The processing units 3A and 3B are supported by the grinding tool holders 19A and 19B so that the grinding wheel W rotates in a plane parallel to the moving direction. This grinding wheel W is a disc-shaped grinding tool in which a grinding groove W1 having an inverted trapezoidal cross section is formed over the entire circumference of the outer circumferential surface, and as shown in FIG. 4 (a), the inner surface of the grinding groove W1. Further, for example, by inserting the edge G1 on the left side of the glass sheet G, the corners G3 and G3 on both sides of the left side end face G5 are respectively ground by the inclined parts W2 on the inner surface of the grinding groove W1, and chamfering is performed ( (Refer FIG.4 (b)). The chamfering of the corners G4 and G4 on both sides of the right side end face G6 is the same.

  The chamfering apparatus 1 holds the glass sheet G by suction and fixing by using a first fixed suction cup A provided on the movable carriages 2A and 2B. Then, the grinding wheel W is rotated at a constant rotational speed, the processing units 3A, 3B and the movable carriages 2A, 2B are simultaneously moved in the direction of the delivery position, and in the same manner as in the case of the chamfering method, Chamfering of the glass sheet G is performed.

  Although the embodiment in which the left side end face G5 and the right side end face G6 of the glass sheet G are chamfered at the same time has been described above, the chamfering apparatus 1 can perform chamfering of one side of the glass sheet G in one cycle time. Therefore, four chamfering devices 1 having the same structure can be arranged in series, and the chamfering process can be performed by grinding the end surface of the plate glass G one side at a time in each chamfering device 1 while changing the direction of the plate glass G. It is.

1 Chamfering device 2A, 2B Moving carriage 3A, 3B Processing unit 4A, 4B, 14A, 14B Linear motion guide device 4A, 4B, 17A, 17B Rail 6A, 6B, 18A, 18B Slider 7A, 7B Movable base 8A, 8B, 9A , 9B Rail 11A, 11B Main body 12A, 12B Suction arm 15 Base 19A, 19B Grinding tool holder A, S Fixed suction cup G Sheet glass G1, G2 Edge edge G3, G4 Corner part G5, G6 End face W Grinding wheel W1 Grinding groove W2 Inclination Part

Claims (5)

In the chamfering method for a plate material, chamfering at least one end face of the plate material,
While moving the plate material from the receiving position of the plate material to the delivery position, the grinding tool is brought into contact with at least one side of the plate material parallel to the moving direction of the plate material and rotated in a specific direction to perform a grinding operation. And a step of moving the relative movement speed of the plate material that is lower than the movement speed of the plate material to a predetermined grinding speed v;
With the plate material held at the delivery position, the grinding tool is continuously rotated in the specific direction, and the remaining portion of the end surface of the plate material is ground while moving toward the receiving position at the speed v. Process,
A chamfering method for a plate material, comprising: introducing a next plate material into the receiving position before the grinding operation of the end surface of the plate material is completed, and moving the grinding tool to the next plate material.
The plate member is rectangular, moved so that a pair of opposing sides coincides with the moving direction, and each end surface of the opposing pair of sides is ground by the grinding tool arranged corresponding to each side. The method for chamfering a plate material according to claim 1.
A chamfering device for chamfering at least one side of a plate material,
From the receiving position of the plate material to the delivery position, transporting the plate material in a fixed state, returning to the receiving position, a moving carriage for receiving the next plate material,
A fixing device for holding the plate material delivered from the movable carriage at the delivery position;
From the receiving position to the delivery position, the moving speed is lower than that of the movable carriage and the relative movement speed with respect to the movable carriage moves at the grinding speed v, and reverses at the delivery position to grind the remaining portion of the end face of the plate material. grinding while moving in v, and then returning to the receiving position,
The chamfering device for a plate material, wherein the movable carriage returns the plate material to the fixing device at the delivery position and then returns to the reception position earlier than the grinding tool.
The grinding tools are arranged in pairs, arranged in a direction orthogonal to the moving direction of the movable carriage, with a predetermined interval, and the predetermined interval is an end surface of each plate member on two sides facing each other in the plate member The chamfering device for a plate material according to claim 3, wherein the chamfering distance is a grinding interval.
The movable carriage has a first fixed sucker for adsorbing and fixing the plate material, while the fixing device has a second fixed sucker for adsorbing and fixing the plate material,
In the delivery position, after the plate material of the movable carriage is adsorbed and fixed by the second fixed suction cup of the fixing device, the adsorption and fixation of the plate material by the first fixed adsorption plate of the movable carriage is released. The chamfering apparatus for a plate material according to claim 3 or 4.

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