JPH0525159Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an automatic TV frame clamping device, and in particular, the invention relates to an automatic TV frame clamping device that automatically clamps a TV frame when cutting the surface (R surface) of the TV frame to which a shadow mask is fixed. The present invention relates to a device for clamping.

(Prior art) A blind lattice-shaped shadow mask (aperture grille) is fixed to the front surface (R surface) of the upper and lower horizontal frames of the TV frame of a Trinitron type television receiver. must be performed with high precision to minimize image unevenness. Referring to FIG. 7, which schematically shows a television frame and an NC cutter, the television frame 10 has two horizontal frame portions 12 and two vertical frame portions 18, and the horizontal frame portions are formed in an L shape. As shown in the figure, it consists of a horizontal frame vertical portion 14 and a horizontal frame horizontal portion 16, and the upper surface (R surface) 14 of the horizontal frame vertical portion
a is cut by the NC cutter 20. In addition,
For convenience of explanation hereinafter, each side of these frame portions will be referred to as follows.

14a... R surface (upper surface of the vertical part of the horizontal frame), 14b...Inner surface (inner surface of the vertical part of the horizontal frame), 14c...Outer surface (outer surface of the vertical part of the horizontal frame), 14d... end face (end face of vertical part of horizontal frame), 16a...Surface (surface of horizontal frame horizontal part), 16b...Back side (back side of horizontal frame horizontal part), 18a...Top surface (top surface of vertical frame part), 18b...Outer surface (outer surface of vertical frame part), 18c...Inner surface (inner surface of vertical frame part).

8 (top view) and FIG. 9 (front view) show a conventional semi-automatic clamping device 22, which includes a base plate 24, stands 26 disposed along both sides of the base plate 24, have. One of the stands (the upper stand in the drawing of FIG. 8) is provided with fixed fixed point abutting pins 28 protruding inward at substantially both ends thereof, and the fixed fixed point abutting pins 28 of these fixed fixed point abutting pins 28 A lock bolt nut 30 protruding inward is provided at a position between the other stands 26.
A lock bolt nut 30 protruding inward is provided on the lower stand in FIG. 8. A fixed point support pin 32 for supporting the back surface 16b of the horizontal frame horizontal portion 16 is fixed on the base plate 24 at a corresponding position below the horizontal frame horizontal portion of the television frame inside the stand 26. The television frame is basically positioned by the fixed fixed point support pin 32 and the fixed fixed point contact pin 28 described above.

Additionally, two series of clamp cylinders 34 are provided at the center of the base plate 24 to correspond to the fixed point abutment pins 28 and lock bolt nuts 30 respectively attached to the stands 26 on both sides. In addition, 4 of the base plate 24
At the corner, a clamp cylinder 36 is attached to the vertical frame part 1.
8 and the horizontal frame vertical portion 14d.

Clamping by this clamping device 22 is performed as follows.

The television frame 10 is carried onto the base plate by an operator and positioned relative to the fixed fixed point abutment pin 28 and the fixed fixed point support pin 32.
Next, the clamp cylinder 34 opposed to the fixed point abutment pin 28 is actuated to clamp the television frame. Next, the lock bolt nut 30 is tightened to the extent that it lightly contacts the TV frame, and the remaining clamp cylinder 34 is used to clamp the TV frame to the lock bolt nut 30. Finally, the vertical frame portions of the television frame are clamped using clamp cylinders 36 located at the four corners of the base plate.

(Problems to be Solved by the Invention) However, since the TV frame of such a conventional clamping device is made of steel, it is quite heavy, making it difficult for workers to carry it in and out. In other words, since the fixed fixed point abutment pins etc. are provided at fixed positions, these fixed fixed point abutment pins get in the way of automatic loading and unloading, and this cannot be done automatically and must be done by a worker. However, the weight of the TV frame makes it difficult to work with. In addition, positioning work (adjustment of lock bolts and nuts, etc.) by a worker during the clamping operation requires labor and time. Furthermore, since the clamping on the TV frame is not strong enough to prevent positional deviation during cutting (for example, the clamping force is small, there is no clamping from above, etc.),
The precision of cutting is unstable. Furthermore, processing distortion of the TV frame is absorbed (compensated) during positioning.
No such consideration has been given.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an automatic television frame clamping device that can automatically clamp television frames.

Still another object of the present invention is to provide an automatic TV frame clamping device that increases clamping force, absorbs distortion of the TV frame during clamping, and monitors positioning when automating the aforementioned TV frame clamping. It's about doing.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention provides a TV frame automatic clamping device that includes a support device that supports the horizontal frame horizontal portion of the TV frame, and a support device that supports the horizontal frame horizontal portion of the TV frame. a first clamping device for positioning and clamping the portion; a positioning device for positioning the vertical frame portion of the television frame; a second clamping device for clamping the vertical frame portion of the television frame; a control means for controlling two clamp devices; a first fluid cylinder having clamp claws for positioning the first clamp device by pressing vertical portions of the horizontal frame on both sides from inside; and a control means for controlling two clamp devices; A hydraulic device fixes the clamp claw of the first fluid cylinder at the positioned position, and a second clamp is clamped between the clamp claw of the first fluid cylinder by pressing the horizontal frame vertical portions on both sides from the outside. The present invention employs an automatic television frame clamping device characterized by having a fluid cylinder.

(Example) Next, the present invention will be explained with reference to the drawings.

First, with reference to Figure 1 (top view), Figure 2 (back view taken from the line - in Figure 1), and Figure 3 (front view seen from the line - in Figure 1), A support device and a positioning monitor incorporated in the invented TV frame automatic clamping device will be explained.

The clamping device 42 includes a base plate 42
The base plate 42 has a stand 41 on one side thereof (lower side in FIG. 1).
An equalizer balance is pivotally attached to the stand 41 via a central pin 46 that serves as a fulcrum. Equalizer fixed point pins 48 are adjustably attached to the upper surface of both ends of the equalizer balance 44. This equalizer fixed point pin 48 supports both ends of the back surface 16b of one horizontal frame horizontal portion 16. On the other hand, the base plate 42
Two fixed point pins 50 are fixed to the other side (upper side in FIG. 1) of the frame, and their positions correspond to the positions that support both ends of the back surface 16b of the other horizontal frame horizontal portion 16. .

When the television frame is placed and positioned over these pins 48, 50, the equalizer balance 44 is used so that even if the television frame has some distortion (for example one transverse frame member (even if the machine is machined in a state that is slightly inclined with respect to the horizontal frame member), the equal balance 44 may be slightly inclined to the horizontal frame member 46.
The two equal fixed point pins 4
Since the height of the TV frame 8 is changed, the distortion of the TV frame can be absorbed (compensated), and it can be reliably supported at four points by the two fixed fixed point pins 50 and the two equalizer fixed point pins 48.

Note that the equalizer fixed point pin 48 is configured to be fixed by hydraulic oil after the positioning is completed.

Furthermore, an electrical measuring device (monitor) is provided above the base plate 42 . This monitor has a monitor fixed point pin 52 fixed through an insulating material 54. This monitor fixed point pin 52 is connected to a measuring device by a conductive wire,
By confirming that the two monitor fixed point pins are electrically conductive at the same time, it is possible to sense that the positioning is accurate, and also serves as a monitor fixed point pin that serves as a reference point during positioning.

Next, the clamping device (first clamping device) incorporated in the clamping device of the present invention will be explained with reference to FIG. 4, which is an enlarged sectional view showing the clamping state of the horizontal frame portion. A clamp case 56 is arranged at the center of the base plate 42 (not shown in FIG. 4). The clamp case 56 includes a fluid cylinder (for example, an air cylinder) 5.
8 is attached, and its actuator rod 60 is fixed to the rear of the lower end of the L-shaped clamp claw 62. When the air cylinder 58 is actuated,
The actuator rod 60 is extended to bring the clamp pawl 62 into contact with the inner surface 14b of the horizontal frame vertical section 14. Further, a clamp shaft 64 is fixed to the rear of the upper end of the clamp claw 62, and passes through a flexible clamping sleeve 66 disposed within the clamp case 56. A close annular gap is provided between the clamp case 56 and the clamping sleeve 66, and a hydraulic oil 6 is supplied to the gap.
8 is supplied, the clamping sleeve is compressed and the clamp shaft 64 is tightly clamped. Therefore, after the clamp claw contacts the vertical portion of the horizontal frame and is positioned by the air cylinder 58, the position is maintained by the hydraulic oil.

Further, a fluid cylinder (for example, a hydraulic cylinder) 70 is disposed outside the vertical portion of the horizontal frame, and its clamp claw 72 cooperates with the aforementioned clamp claw 62 to clamp the vertical portion of the horizontal frame. .

Next, the clamping device of the present invention incorporating the support device (FIGS. 1 to 3) and the first clamp device (FIG. 4) is shown in FIGS. 5 (top view) and 6.
This will be explained with reference to the figure (front view). In addition to the above-mentioned support device and first clamp device, the clamping device further includes the following devices. That is, there is a positioning device 76 extending laterally at approximately the center of the base plate 42, and this positioning device uses, for example, an air cylinder to position the vertical frame portion using left and right distribution claws 76a. Further, the above-mentioned equalizer fixed point pin 48 can be fixed by a fluid cylinder, for example, a hydraulic cylinder 74, and the clamping device 40 has second clamping devices at the four corners of the base plate 42 for clamping the end surface 14a of the horizontal frame vertical portion 14. It has a fluid cylinder, for example a hydraulic cylinder 78, which constitutes a. Furthermore, the clamping device 40 has a pivotable clamp cylinder 90 that clamps the surface 16a of the horizontal frame portion 16 together with the fixed fixed point pin 50 and the equalizer fixed point pin 48.

Next, the operation of the clamping device of the present invention will be explained.

First, the television frame 10 is automatically brought in from another facility and placed on the fixed fixed point pin 50 and the equalizer fixed point pin 48 (see FIGS. 2 and 3). At this time, the clamp claw 6 is moved outward by the air cylinder 58.
2. The clamp claw 72 that moves inwardly by the hydraulic cylinder 70 and the pivoting claw of the clamp cylinder 90 are in their respective retracted initial positions;
It does not get in the way of transporting the TV frame. Next, the television frame is positioned in the vertical and horizontal directions in the drawing of FIG. 5 by the air cylinders at both upper ends of the first clamp device (air cylinder 58) and the second clamp device (air cylinder 76). At this time, the vertical positioning is sensed by the monitor fixed point pin 52. After confirming that the positioning is accurate, the hydraulic cylinder 74
, the equalizer fixed point pin 48 is fixed, and the clamp cylinder 90 clamps the horizontal frame horizontal portion 16 together with the fixed fixed point pin 50 and the equalizer fixed point pin 48 . Next, the remaining air cylinders of the first clamp device are operated, and the clamp shaft 64 of this air cylinder 58 is fixed with hydraulic oil 68. Next, the hydraulic cylinders 70 except the hydraulic cylinder disposed at the outermost end of the hydraulic cylinder 70 are operated to clamp the vertical portion of the horizontal frame.
Next, the outermost hydraulic cylinder 70 is activated to similarly clamp the vertical portion of the horizontal frame. Finally, the clamp cylinder 78 is operated to clamp the end surface 14d of the horizontal frame vertical portion 14.

In this way, the length of the TV frame 10,
Horizontal and height positioning is performed automatically, and
Clamping of the transverse frame parts (horizontal frame vertical part and transverse frame horizontal part) and longitudinal frame parts takes place completely automatically. Positioning is also monitored. Further, each fluid cylinder (air cylinder, hydraulic cylinder) that performs clamping, supply and discharge of hydraulic oil, etc. are performed according to a predetermined sequence by a control device.

(Effects of the Invention) As described above in detail, the present invention is configured to automatically clamp the television frame, and therefore does not require any effort by the operator. Furthermore, since a support device that absorbs distortion of the TV frame is used, the number of clamping points is increased, and the TV frame is clamped with a stronger clamping force, the accuracy of cutting can be improved.

[Brief explanation of the drawing]

FIG. 1 is a plan view for explaining the support device of the present invention. FIG. 2 is a rear view taken along the line - in FIG. 1. Figure 3 shows the line -
FIG. Figure 4 shows the first example of this invention.
FIG. 3 is an enlarged sectional view showing the clamp device. FIG. 5 is a plan view of the clamping device of the present invention.
FIG. 6 is a front view of the clamping device of the present invention. FIG. 7 is a perspective view of the television frame. FIG. 8 is a plan view of a conventional clamping device. FIG. 9 is a front view of a conventional clamping device. 10...TV frame, 12...Horizontal frame part, 14...Horizontal frame vertical part, 16...Horizontal frame horizontal part, 18...Vertical frame part, 4
0... Clamping device, 42... Base plate, 44... Equalizer balance, 48... Equalizer fixed point pin, 50... Fixed fixed point pin, 52...
...Monitor fixed point pin, 58...Air cylinder, 6
2...Clamp claw, 66...Clamp sleeve,
68...Hydraulic oil, 76...Positioning device, 78...
...clamp cylinder.

Claims (1)

[Claims for Utility Model Registration] (1) An automatic television frame clamping device comprising: a support device that supports the horizontal portion of the horizontal frame of the television frame; a first clamp device that positions and clamps the vertical portion of the horizontal frame of the television frame; , a positioning device that positions the vertical frame portion of the television frame, a second clamp device that clamps the vertical frame portion of the television frame, and a control means that controls the first clamp device, the positioning device, and the second clamp device. a first fluid cylinder, wherein the first clamp device has clamp claws for positioning by pressing the horizontal frame vertical portions on both sides from inside;
A hydraulic device that fixes the clamp claw of the first fluid cylinder at the position where the first fluid cylinder is positioned, and a hydraulic device that presses the horizontal frame vertical portions on both sides from the outside to hold the first fluid cylinder between the clamp claw and the first fluid cylinder. a second fluid cylinder to be clamped;
An automatic television frame clamping device comprising: (2) The apparatus of claim 1, wherein the support device includes two fixed point pins for supporting substantially both ends of one horizontal frame horizontal portion, and two fixed point pins for supporting substantially both ends of the other horizontal frame horizontal portion.
A device characterized by comprising two equalizer fixed point pins provided at both ends of an equalizer balance. (3) The apparatus according to claim 2, further comprising a device for clamping the horizontal portion of the horizontal frame from above the fixed fixed point pin and the equalizer fixed point pin. (4) The apparatus according to claim 1, further comprising electrical measuring devices disposed outwardly at substantially both ends of the vertical portion of one horizontal frame to sense whether the television frame is properly positioned. device to do.