JP4024620B2 - Hard brittle plate side processing equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for performing processing such as grinding and chamfering of a side of a hard brittle plate (mainly a glass plate for display).
[0002]
[Prior art]
FIG. 7 is a diagram schematically showing a main part of a chamfering apparatus for a hard brittle plate. In the figure, 1 is a moving table that moves in a direction perpendicular to the drawing sheet, 2 is a swivel mounted on the moving table, 3 is a surface plate fixed to the upper end of the swivel 2, and 4 is a sheet of paper in a fixed position. It is a chamfering grindstone rotating around a right angle axis. The workpiece 5 to be machined is fixed on the surface plate 3 by vacuum pressure or the like with the side edges protruding from the surface plate 3. Then, the alignment mark marked on the work 5 is read, and the swivel base 2 is positioned so that the side of the work is correctly oriented in the feed direction (the direction perpendicular to the drawing in the drawing). By moving the sheet in the direction perpendicular to the paper surface in the figure, chamfering is performed simultaneously on opposite sides. Next, the swivel base 2 is turned 90 degrees, the chamfering grindstone 4 is positioned in the left-right direction in the drawing according to the position of the side in the new direction, and the moving base is moved to return to the original position. Chamfering the four sides of the workpiece 5 is performed.
[0003]
[Problems to be solved by the invention]
When performing the side processing of the workpiece 5, it is necessary to project the side of the workpiece 5 from the surface plate 3. If the overhang is excessive, there is a risk that the work (hard brittle plate such as a glass plate) may be damaged by a reaction force or a slight impact force acting during the processing. Therefore, when the dimension of the workpiece 5 changes, a setup operation is performed in which the surface plate 3 is changed to a size corresponding to the dimension of the workpiece.
[0004]
This set-up operation is usually performed by removing the surface plate 3 from the swivel base 2 and replacing it with a surface plate of a new size. However, the set-up operation is divided according to the size of the workpiece using a split type surface plate. There is also provided a structure in which the substantial dimension of the surface plate is adjusted to the size of the workpiece by changing the arrangement of the partial surface plate.
[0005]
However, the conventional split-type surface plate has a problem that the divided partial surface plate is rearranged manually, and it takes more time for setup work than a structure that replaces the entire surface plate. .
[0006]
The present invention has been made to solve the above problems, and in a side processing apparatus for hard brittle plates such as a chamfering apparatus for glass sheets, the change of the platen dimensions when the workpiece dimensions are changed is automatically performed. It is an object of the present invention to provide a device that can be performed in particular, and in particular, by using the movement inherent in this type of side processing device, a new drive source is provided for setup change, etc. It is an object of the present invention to obtain the above-described apparatus that enables automatic setup change by simple means without adopting a complicated structure.
[0007]
[Means for Solving the Problems]
The side processing apparatus for a hard and brittle plate according to the invention of claim 1 includes a moving table 1 that moves relative to the tool 4 in the workpiece feeding direction, a swivel table 2 provided on the moving table, and the swivel table In the apparatus for performing the side processing of the hard brittle plate 5 fixed to the surface plate with the side edges protruding, the surface plate 11 includes one of each of the four corners. with four portions platen 14 is divided as each portion platen is mounted on the swivel deck 2 and slidably in a diagonal direction of the platen 11, the diagonal direction of movement of the moving base 1 An engaging / disengaging device 18 for engaging / disengaging the partial surface plate is mounted on the immovable member and swivels so that the diagonal direction becomes the moving direction when changing the dimensions of the hard brittle plate to be processed. The base is turned, the partial surface plate 14 is locked by the engagement / disengagement device 18, and then the movable base 1 is moved by a predetermined amount. By opening the detachment device 18, it is characterized in that set in accordance with the size of the hard and brittle plate for processing the arrangement of four partial surface plate 14.
[0008]
In the above structure, a structure in which the four partial surface plates 14 are individually moved one by one is possible, and the apparatus structure can be simplified most. In this case, by turning the swivel base 2, the diagonal direction of each of the four partial surface plates is set to the moving direction of the movable table 1, and the partial surface plates are engaged with the engaging / disengaging device 18 one by one. Then, by performing the operation of moving the movable table 1 four times, the positions of the four partial surface plates 14 are set. The setting position of each partial surface plate 14 is a known detent mechanism, for example, a plurality of recesses provided at a predetermined pitch between a moving side member and a fixed side member, and a ball or claw biased by a spring. It is possible to hold the movement destination position of each partial surface plate using a mechanism that engages the ball or the claw with one of the opposing recesses.
[0009]
If four partial surface plates or opposed partial surface plates are connected to each other by a synchronization mechanism, the arrangement of the four partial surface plates can be changed by one operation or two operations. As the synchronization mechanism, a rack and pinion mechanism, a pantograph mechanism, a rotating crank mechanism, or the like can be used. In this case, the structure is complicated by the provision of the synchronization mechanism, but the setup change time can be shortened.
[0010]
In the above structure, the platen size is changed by using the movement of the moving table 1, but the platen size is changed by using the turning operation of the turntable 2 with respect to the moving table 1. You can also. That is, the hard brittle plate side processing apparatus according to the invention of claim 2 of the present application includes a moving table 1 that moves relative to the tool 4 in the workpiece feeding direction, and a swivel table 2 provided on the moving table. In the apparatus for performing the side processing of the hard brittle plate 5 fixed to the surface plate with the side surface protruding, the surface plate 11 is provided at the four corners. Each of the four partial surface plates 14 is provided so as to be slidable in a diagonal direction of the surface plate 11 and mounted on the swivel base 2. A hard brittle plate that is provided with a synchronization mechanism 25 that synchronously moves the board in a diagonal direction, and is provided with an engagement / disengagement device 23 that engages and disengages the non-turning member and the synchronization mechanism at a predetermined turning position of the turntable 2. In the setup change when the dimensions are changed, the synchronization mechanism 25 is moved to a predetermined turning position of the turntable 2. After engaging the disengagement device 23 and then turning the turntable 2 by a predetermined angle, the engagement / disengagement device 23 is opened to match the arrangement of the four partial surface plates 14 to the size of the hard brittle plate to be processed. It is characterized by setting.
[0011]
The platen 11 in these structures is divided so that the four corners of the platen 11 can move in the radial direction. In the simplest case, the structure is divided by two orthogonal centerlines parallel to the side of the surface plate (see FIG. 1). However, a structure in which a stationary part is left in the center of the surface plate may be used. However, there is an advantage that the gap between the partial surface plates can be reduced.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
1 and 2 are views showing a first embodiment of the present invention. The surface plate 11 is divided into four partial surface plates 14 by center lines 12 and 13 of vertical and horizontal characters. Each partial surface plate 14 is mounted on the turntable 2 so as to be slidable along a linear guide 15 in the radial direction. The direction of the linear guide 15 is the diagonal direction of the surface plate 11. If provided in the correct diagonal direction, the surface plate is resized with a constant aspect ratio. If the aspect ratio differs between the small and large ones, the diagonal direction is deviated from the exact diagonal direction accordingly. Although not shown in the drawing, each partial surface plate 14 is locked at a desired movement position along the linear guide 15. As the locking means, there are a recess provided at a predetermined pitch along the sliding direction between the swivel base and each partial surface plate 14, and a ball or a claw spring-biased toward the recess A detent mechanism consisting of a pair is used.
[0013]
Air cylinders 18 and 18 each provided with a locking projection 17 at the tip of the rod are provided on an immovable member such as a device frame (not shown) so as to face diagonally. On the other hand, a recess that engages with the locking projection of the cylinder rod is provided on the side surface of the tip of each partial surface plate 14. The mounting positions of the air cylinders 18 and 18 are positions facing the tip corners of the partial surface plate 14 when the linear guide 15 is made to coincide with the moving direction of the moving table 1.
[0014]
In the above apparatus, when changing the size of the surface plate, the swivel base 2 is turned so that one linear guide 15 of the partial surface plate 14 is directed in the moving direction of the mobile table 1 and the tip corner of the partial surface plate is placed. The movable table 1 is moved so that 19 is positioned to face the air cylinders 18 and 18 (see FIG. 1B). Then, the rods of the air cylinders 18 and 18 are extended, and the partial surface plate 14 is locked by the locking projections at the tips thereof. In this state, only the diagonal dimension corresponding to the dimension to be changed is set. It is moved (see FIG. 1 (c)). By this operation, one of the partial surface plates is set to a new dimension position. By moving the four partial surface plates in sequence using the above operation, the surface plate dimensions are set according to the workpiece dimensions to be machined. To do. The position of the set partial surface plate is held by the detent device described above, and when the work is sucked and fixed, it is also held by the fixed work.
[0015]
3 and 4 show an example of a rack and pinion mechanism that synchronizes four partial surface plates. FIG. 4 is a longitudinal sectional view of a surface plate diagonal AA in FIG. The pinion 20 is disposed in the center of the surface plate 11 so as to be freely rotatable. Four racks 21 meshing with the pinion 20 extend in parallel with the linear guides 15 of the partial surface plates 14, and each partial surface plate 14. It is fixed on the back of the. In the above structure, if one of the partial surface plates is moved diagonally in the same manner as described above, the movement is transmitted to the remaining three racks 21 via the pinion 20 and the remaining three portions. The platen is moved symmetrically to the center of the pinion 20. Therefore, when such a synchronization mechanism is provided, the entire surface plate can be sized according to a new workpiece by operating only one partial surface plate.
[0016]
FIGS. 5 and 6 show another example of the synchronization mechanism. The link 22 connects the four circumferential positions of the crank plate 24 supported by the center of the surface plate so as to be freely rotatable and the four partial surface plates 14. It is a structure that is pivotally connected. Since each partial surface plate 14 is guided in a diagonal direction by the linear guide 15, each partial surface plate 14, the link 22 and the crank plate 24 constitute a so-called piston crank mechanism. When one of the partial surface plates 14 is moved in the radial direction, the movement rotates the crank plate 24 via the links 22, and this rotation is transmitted to the respective partial surface plates 14 by the other three links 22. Therefore, like the structure of FIGS. 3 and 4, the four partial surface plates 14 are expanded and contracted in the radial direction in synchronization.
[0017]
In the case where the synchronization mechanism of FIG. 5 is provided, if the turntable 2 is turned in a state where the turn of the crank plate 24 is fixed, the four partial surface plates 14 can be expanded and contracted in synchronization. 5 and 6 show an example of a fixing structure of the crank plate 24. FIG. In the illustrated example, one of the connecting pins 26 connecting the crank plate 24 and the link 22 is extended downward, and the extended portion passes through a long hole 27 in the arc direction provided in the swivel base 2. . The arc long hole 27 is provided with a length that allows relative rotation of the crank plate 24 with respect to the swivel base 2 required for expansion and contraction of the surface plate. On the other hand, an air cylinder 23 having an engagement hole 23 a that engages with the lower end of the one connecting pin 26 at the tip of the rod is fixed upward on the movable table 1. In this structure, the swivel base 2 is rotated to a position where the connecting pin 26 faces the engaging hole 23a to extend the cylinder 23, and the connecting pin 26 and the engaging hole 23a are engaged. When the swivel base 2 is rotated by a desired angle within the length range of the circular arc long hole 27, the crank plate 24 is rotated relative to the swivel base 2, so that the four partial surface plates 14 are moved by the relative rotation. It can be synchronized and scaled in the radial direction.
[0018]
【The invention's effect】
According to the present invention described above, in the apparatus for processing the sides of hard and brittle plates of various dimensions, the setup change operation of changing the size of the surface plate in accordance with the dimensions of the workpiece to be processed is fully automatic. In addition, the automation is performed using the moving operation of the movable table and the swiveling operation of the swivel table that the side processing apparatus has conventionally provided, and members that must be newly added are: Although there is only a linear guide and engagement / disengagement device, and the synchronization mechanism only needs to be provided when necessary, the increase in device cost due to automation is very small. Thus, there is an effect that an economical side processing apparatus can be provided.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing a surface plate size changing operation of a first embodiment. FIG. 2 is a schematic longitudinal sectional view showing a mounting structure of a surface plate. FIG. 3 is a plan view showing a synchronization mechanism using a rack and pinion. 4 is a schematic cross-sectional view of the main part of the apparatus of FIG. 3. FIG. 5 is a schematic plan view showing a synchronization mechanism by a piston crank mechanism. FIG. 6 is a schematic cross-sectional view of the main part of FIG. ] Explanatory diagram showing chamfering of hard brittle plate 【Explanation of symbols】
1 Moving table 2 Turning table 4 Chamfering grindstone 5 Workpiece
11 Surface plate
14 Partial surface plate
18 Air cylinder
23 Air cylinder
25 Synchronization mechanism

Claims (2)

A movable table (1) that moves relative to the tool (4) in the workpiece feed direction, a swivel table (2) provided on the move table, and a surface plate (11) mounted on the swivel table. In the apparatus for processing the side of the hard brittle plate (5) fixed to the surface plate with the side edges protruding, the surface plate (11) was divided so as to include each one of its four corners . Four partial surface plates (14) are provided. Each partial surface plate is slidable in the diagonal direction of the surface plate (11) and mounted on the swivel base (2). An engagement / disengagement device (18) that engages and disengages the partial surface plate in the moving direction is attached to the stationary member, and the diagonal direction is the moving direction when changing the dimensions of the hard brittle plate to be processed. Rotate the swivel so that the partial table (14) is locked by the engagement / disengagement device (18), and then move the movable table (1) by a predetermined amount to open the engagement / disengagement device (18). The arrangement of the four partial surface plates (14) And setting in accordance with the size of the hard and brittle plate for Engineering, sides processing apparatus of the hard brittle plate. A movable table (1) that moves relative to the tool (4) in the workpiece feed direction, a swivel table (2) provided on the move table, and a surface plate (11) mounted on the swivel table. In the apparatus for processing the side of the hard brittle plate (5) fixed to the surface plate with the side edges protruding, the surface plate (11) was divided so as to include each one of its four corners. Four partial surface plates (14) are provided, and each partial surface plate is slidable in the diagonal direction of the surface plate (11) and mounted on the swivel (2). A synchronization mechanism (25) that moves in synchronization with the direction is provided, and this synchronization mechanism includes members (20, 24) that are freely rotatable around the center of the surface plate , and a predetermined turning position of the turntable (2). in disengaging the said member not pivot member and said synchronization mechanism disengaging device (23) is provided, in replacement stage during resizing of hard and brittle plate to be processed, the synchronization at a predetermined pivoted position of the swivel slide mechanism After engaging the engagement / disengagement device (23) with the member of (25), and then turning the turntable (2) by a predetermined angle, the engagement / disengagement device (23) is opened, thereby providing four partial surface plates. The apparatus for processing a side of a hard brittle plate, wherein the arrangement of (14) is set according to the size of the hard brittle plate to be processed.

Images