JPH10244778A - Book end-face polishing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the structure of a book clamping mechanism and stabilizing a clamping state. SOLUTION: A book clamping mechanism 9 which is movable along a guide rod 17 is provided on a polishing table 2 incorporating a polishing drum 8. In addition, the book clamping mechanism 9 is equipped with a fixed clamping member 10 and a movable clamping member 11. The movable clamping member 11 is moved close to and remote from the fixed clamping member 10 to clamp and release the clamping of a book 25. Further, a clamping handle 24 which is pivoted vertically between the clamping position of a lower dead point and the clamping release position of an upper dead point, is provided on the book clamping mechanism 25. The movement of the clamping handle 24 is transferred to the movable clamping member 11 to drive the movable clamping member 11. A grip 28 is attached to the tip of the clamping handle 24 to use the clamping handle 24 as an operating handle for moving the book clamping mechanism 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a book end surface polishing apparatus for polishing an end surface of a book mainly for beautifying and reproducing an old book, and more particularly to a book end surface polishing apparatus capable of obtaining a stable book clamp state with a simple structure. Related to the device.

[0002]

2. Description of the Related Art In general, when selling an old book, it is common practice to grind the end face of the book in order to beautify and reproduce it. A polishing table having a polishing drum that is driven to rotate around the table; and a book clamp mechanism that is attached to the polishing table and moves on the polishing drum in a state where an arbitrary number of books are clamped to grind an end surface of the book. Book end surface polishing apparatuses are known. The applicant of the present application has also previously filed Japanese Patent Application No. 7-284.
No. 318 proposes a book clamping device applied to this type of device.

[0003]

By the way, the book clamping mechanism of the book end surface polishing apparatus proposed by the present applicant has been described.
Since the movable clamp member is driven by using a drive device such as a fluid pressure cylinder, there is a problem that the device becomes complicated, large, and costly.

As a method for solving this problem, it is conceivable to manually clamp the book. However, if the book is simply clamped manually, the operation becomes complicated and impractical, and the structure is not so much. There is a problem that the simplification cannot be performed and the clamp state is not stable.

When the book is manually clamped, the book can be clamped at any position of the book clamping mechanism which moves on the polishing drum. It is also conceivable to carry out the clamping work. In this case, the book is drawn into the rotating polishing drum before the clamping, which is extremely dangerous.

The present invention has been made in view of such a situation, and its structure is greatly simplified so that it can be easily incorporated into a small-sized apparatus. Further, the book can be easily clamped and the clamp state can be stabilized. It is an object of the present invention to provide a book end surface polishing apparatus that can perform the above operation.

Another object of the present invention is to provide a book end surface polishing apparatus capable of automatically returning a book clamp mechanism, which has been manually moved to an end point, to a start point position, thereby greatly improving workability. It is in.

Another object of the present invention is to provide a book end surface polishing apparatus which can easily and easily clamp a book to be clamped even if the thickness of the book to be clamped changes and stabilize the clamped state. To offer.

Still another object of the present invention is to provide a book end surface polishing apparatus capable of greatly preventing the book clamping operation from being performed on the polishing drum, thereby greatly improving the operation safety. .

[0010]

In order to achieve the above object, the present invention provides a polishing table having a polishing drum which is driven to rotate about a substantially horizontal axis, and clamps any number of books mounted on the polishing table. A book clamp mechanism for polishing the end surface of a book by moving on the polishing drum in a state where the book is clamped, wherein the book clamp mechanism includes a fixed clamp member located on an operator side; and a fixed clamp member. A movable clamp member which is located on the side opposite to the worker and which moves toward and away from the fixed clamp member to clamp the book between the fixed clamp member; and a spring which biases the movable clamp member in a direction away from the fixed clamp member; A mounting bracket disposed on the non-operator side of the movable clamp member and integrally connected to the fixed clamp member; A clamp handle that is movably mounted and swings to a bottom dead center position and serves as an operation handle for moving the book clamp mechanism; a clamp handle at a top dead center position interlocked with swinging of the clamp handle And a pressing mechanism for pressing the movable clamp member against the fixed clamp member against the urging force of the spring by swinging the movable clamp member to the bottom dead center position. By providing a clamp handle that also serves as an operation handle, the structure can be simplified and easily incorporated into a small device. In addition, when the book clamp mechanism is moved by gripping the clamp handle, As a result, a force for pressing down to the bottom dead center side is applied, so that the clamped state can be stabilized.

According to the present invention, a book clamp mechanism is provided with a guide rod penetrating a fixed clamp member, a movable clamp member and a mounting bracket and having a start point stopper and an end point stopper at both ends. A return spring biasing the starting point stopper side is provided. As a result, the book clamp mechanism that has been manually moved to the end point can be automatically returned to the start point position, and workability can be greatly improved.

The present invention also provides a push rod slidably mounted on a mounting bracket, an operation spring interposed between a tip of the push rod and a movable clamp member, and a swing of a clamp handle. And a cam that rotates so that the cam surface slides on the base end of the push rod. Since the movable clamp member is not directly pressed by the push rod but is pressed by the operation spring, the book can be clamped without any problem even if the entire thickness of the book to be clamped changes. In addition, the clamping operation is easy, and the biasing force of the operation spring is always applied to the movable clamp member, so that the clamp state can be stabilized.

The present invention also provides a push rod slidably mounted on a mounting bracket, an operation spring interposed between a tip of the push rod and a movable clamp member, and one end of the push handle provided on a clamp handle. A link member is pivotally attached and the other end is pivotally attached to a base end of the push rod and transmits a movement of the clamp handle to the push rod. And even if a link member is used, it is possible to obtain the same effect as when using a cam.

According to the present invention, the clamp handle further includes a clamp release pin that swings downward by swinging to the upper starting point side, and a concave clamp release portion is provided on an upper surface of the clamp release position of the polishing table. At positions other than the clamp release section, the clamp release pin abuts on the top surface of the polishing table by swinging toward the top dead center side of the clamp handle to prevent the clamp handle from swinging to the top dead center position. In the position of the part, the tip engages the clamp release part by swinging the clamp handle to the top dead center side, allowing swing to the top dead center position of the clamp handle and preventing movement of the book clamp mechanism. It is characterized by being able to do. Thus, the clamp can be released only at a predetermined clamp release position on the polishing table, and when the clamp is released, the movement of the book clamp mechanism is prevented. There is no danger that the book will be clamped. For this reason, it is possible to greatly improve the safety of work, and it is also possible to prevent the polishing drum from being damaged due to biting of a book.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 shows a book end face polishing apparatus according to a first embodiment of the present invention.
Is provided with a polishing table 2 having a housing 3 and an upper surface plate 4. In the housing 3, a compressor 5 and a dust collector 6 are provided at a lower end, and a motor 7 is provided at an upper end.
A polishing table drum 8 that is driven to rotate about a substantially horizontal axis is provided. A book clamp mechanism 9 that can move in the left-right direction in FIG. 1 is provided on the top plate 4.

As shown in FIGS. 2 to 6, the book clamp mechanism 9 includes a fixed clamp member 10 located on the leftmost worker side in the drawing and a movable clamp located on the opposite side of the fixed clamp member 10 from the worker. The fixed clamp member 10 and the mounting bracket 12 are provided with a member 11 and a mounting bracket 12 disposed on the side opposite to the worker of the movable clamp member 11. It is integrally connected to the shape.

As shown in FIGS. 2 and 4, cylindrical guide bushes 14, 15, 16 are fixedly provided at both ends of each of the members 10, 11, 12 in a penetrating state, respectively. An arc-shaped guide rod 17 is disposed in each of the guide bushes 14, 15, 16 so as to penetrate therethrough.
The book clamp mechanism 9 can move in the left-right direction in the figure using the guide rod 17 as a guide.

The guide rod 17 is shown in FIGS.
As shown in the figure, a starting point support 18 erected on the upper surface plate 4
Both ends are supported by an end support 19 and a start stopper 20 is fixed to the end on the start support 18 side, and an end stopper 21 is fixed to the end on the end support 19 side. Has been established. The book clamp mechanism 9 can be moved between these stoppers 20, 21.

As shown in FIGS. 2 to 4, a book clamp mechanism 9 is provided between the end point stopper 21 and the guide bush 16 of the mounting bracket 12.
A return spring 22 biasing to the 0 side is interposed,
The book clamp mechanism 9 automatically returns to the position of the starting point stopper 20 when the external force is released by the urging force of the return spring 22.

On the other hand, the movable clamp member 11 is
As shown in FIG. 4, the guide bush 1 can be moved toward and away from the fixed clamp member 10 along the guide rod 17.
A spring 23 that urges the movable clamp member 11 away from the fixed clamp member 10 is interposed between the movable clamp members 4 and 15. Then, the movable clamp member 11
By operating a clamp handle 24, which will be described later, the book 25 approaches the fixed clamp member 10 against the urging force of the spring 23, and clamps the book 25 with the fixed clamp member 10.

That is, the mounting bracket 12 includes:
As shown in FIGS. 2 and 4, two support brackets 26 facing each other at a predetermined interval are attached, and a fulcrum shaft 27 is rotatably supported between the two support brackets 26. The base end of a clamp handle 24 having a handle 28 at the distal end is integrally connected to 27 via a key 29. Then, the clamp handle 24 is connected to the fulcrum shaft 27.
1 can be swung up and down from a bottom dead center position shown by a solid line to a top dead center position shown by a chain line in FIG.

A press mechanism 30 is provided between the clamp handle 24 and the movable clamp member 11, as shown in FIGS.
Moves the clamp handle 24 to the movable clamp member 1.
1 to drive the movable clamp member 11.

As shown in FIGS. 2 to 6, the pressing mechanism 30 includes a push rod 32 that slides while being supported by a guide bush 31 fixed to the mounting bracket 12 in a penetrating state. The movement of the push rod 32 is provided between the flange-shaped spring receiver 32a provided at the intermediate portion of the movable clamp member 32 and the spring receiver concave portion 11a provided at the movable clamp member 11.
An operating spring 33 for transmitting the information to the push rod 32 and the movable clamp member 11 is always in non-contact. And the movement of the push rod 32 is
The power is transmitted to the movable clamp member 11 only through the operation spring 33.

On the other hand, as shown in FIG. 2 to FIG.
The cam 34 is integrally fixed to the base end of the clamp handle 24 while being mounted on the fulcrum shaft 27. And this cam 34
Is rotated about the fulcrum shaft 27 by the swing of the clamp handle 24, and the push rod 32 is driven by the cam surface 34a.

As shown in FIGS. 2 to 5, the surface of the cam 34 on the side opposite to the clamp handle 24 is a clamp release which projects obliquely downward when the clamp handle 24 is swung to the bottom dead center position. A pin 35 is fixedly mounted, while on the upper surface of the upper surface plate 4 at the clamp release position,
As shown in FIGS. 3, 5, and 6, a clamp releasing portion 36 having a concave groove shape is provided. The clamp release pin 35 allows the clamp handle 24 to swing to the top dead center position only at a position that coincides with the clamp release portion 36 (that is, at the clamp release position). The swing to the top dead center is prevented.

That is, the clamp release pin 35 is
(The book clamp mechanism 9)
Is returned to a position where it comes into contact with the starting point stopper 20), the swing of the clamp handle 24 toward the top dead center causes the tip to engage the clamp release portion 36, and the clamp handle 24 Is allowed to swing to the top dead center position, and the movement of the book clamp mechanism 9 is prevented. As a result, the distal end abuts on the upper surface of the upper plate 4 to prevent the clamp handle 24 from swinging to the top dead center position. Thus, the clamp of the book 25 can be released only at the clamp release position shown in FIG. 6, and it is possible to completely prevent the clamp from being released on the polishing drum 8 by mistake.

In FIG. 1, reference numeral 37 denotes a power switch of the dust collector 6, and reference numeral 38 denotes a dust removing lever for sifting abrasive powder collected by the dust collector 6 into a dust box 39. The abrasive powder can be discarded by pulling out the dust box 39 from the front side in FIG.

Next, the operation of the present embodiment will be described. At the time of polishing the end face of the book 25, as shown in FIG. 6, the book clamp mechanism 9 swings to the top dead center position of the clamp handle 24 at the clamp release position where the book clamp mechanism 9 abuts the starting point stopper 20. Then, the pressing force on the push 32 by the cam 34 is released, so that the movable clamp member 11 moves in a direction away from the fixed clamp member 10 by the urging force of the spring 23, and the clamp is released.
Therefore, as shown in FIG.
The book 25 is inserted between the clamp handles 24
To the bottom dead center position.

The swing of the clamp handle 24 causes
As shown in FIG. 3, the cam 34 rotates counterclockwise in the figure, and the push rod 32 whose base end slides on the cam surface 34a slides to the left in the figure. This movement is transmitted to the movable clamp member 11 via the operation spring 33,
The movable clamp member 11 approaches the fixed clamp member 10 against the urging force of the spring 23. Then, the book 25 is clamped between the fixed clamp member 10.

In this clamp state, the movable clamp member 11 and the push rod 32 are not in contact with each other as shown in FIGS. For this reason,
Even if the thickness of the book 25 changes, it can be clamped without any problem, and the movable clamp member 11 is constantly pressed to the clamp side by the urging force of the operation spring 33. Can be.

When the book 25 is thus clamped, the user grips the handle 28 at the tip of the clamp handle 24 and presses the book clamp mechanism 9 toward the end point stopper 21. Then, the book clamp mechanism 9 moves the return spring 2
The actuator moves along the guide rod 17 against the urging force of No. 2 and finally comes into contact with the end point stopper 21 as shown in FIG. Due to the movement of the book clamp mechanism 9, the book 25 moves from the position shown in FIG. 3 to the position shown in FIG. 5, during which the end surface is polished by the polishing drum 8.

In the state shown in FIG. 4, when the operator releases or weakens the pressing force applied to the handle 28, the book clamp mechanism 9 starts to move by the urging force of the return spring 22,
It is automatically returned to the initial position shown in FIGS.
As a result, the book clamp mechanism 9 is connected to both stoppers 20 and 2.
This operation is one reciprocation, and this operation is repeated two or three times. Thereby, the end surface of the book 25 is completely polished.

When the operator presses the book clamp mechanism 9 by gripping the grip 28, a counterclockwise force is applied to the clamp handle 24 in FIG. The state shown in FIG. For this reason, the clamp state at the time of movement of the book clamp mechanism 9 can be stabilized, although the clamp handle 24 also serves as an operation handle at the time of moving the book clamp mechanism 9.

When the end surface polishing of the book 25 has been completed in this way, at the clamp release position shown in FIG.
The clamp handle 24 is swung to the top dead center position, the clamp is released, and the book 25 is removed from between the clamp members 10 and 11.

Since the book 25 is manually clamped without using power, and the clamp handle 24 also serves as an operation handle for moving the book clamp mechanism 9, the operation configuration Can be greatly simplified.

Since the book 25 can be released from the clamp only at the clamp release position, the clamp is released on the polishing drum 8 and the book 25 is released from the polishing drum 8.
It is possible to completely prevent a drawback such as being pulled in.

FIG. 7 shows a second embodiment of the present invention, in which a pressing mechanism 40 is used in place of the pressing mechanism 30 in the first embodiment.

That is, as shown in FIG. 7, the pressing mechanism 40 has a structure in which a bell crank-shaped link member 44 is used instead of the cam 34 in the first embodiment. The member 44 has a pivot pin 4 at one end.
5, and the other end is pivotally connected to a position near the fulcrum shaft 27 of the clamp handle 24 via a pivot pin 46. The movement of the clamp handle 24 is transmitted to the push rod 32 via the link member 44.

As shown in FIG. 7, the position of the bottom dead center of the clamp handle 24 is regulated by the contact of the clamp handle 24 with a stopper 47 fixed to the support fitting 26. The position of the top dead center of the handle 24 is determined by the clamp release portion 36 of the clamp release pin 35.
Is regulated by the engagement with the boss. In other respects, the configuration is the same as that of the first embodiment, and the operation is the same.

However, even if this pressing mechanism 40 is used,
The same effect as in the first embodiment can be expected.

[0041]

As described above, according to the present invention, a clamp handle which is also used as an operation handle is provided, and the book is clamped and released by swinging the clamp handle. It can be easily incorporated into the device described above, and the clamped state of the book can be stabilized.

According to the present invention, the book clamp mechanism is provided with a guide rod, and the guide rod is provided with a return spring for urging the book clamp mechanism toward the start point stopper, so that the book clamp mechanism is manually moved to the end point. The book clamp mechanism can be automatically returned to the start point position, and the workability can be greatly improved.

In the present invention, since the pressing mechanism is constituted by the push rod, the operation spring and the cam, the book can be clamped without any problem even if the entire thickness of the book to be clamped changes. At the same time, the clamping operation is easy, and the biasing force of the operation spring is always applied to the movable clamp member, so that the clamp state can be stabilized.

Further, according to the present invention, since the pressing mechanism is constituted by the push rod, the operation spring and the link member, the same effect as in the case of using a cam can be obtained.

The present invention further provides a clamp release pin on the clamp handle and a concave clamp release portion on the upper surface of the clamp release position of the polishing table so that the clamp can be released only at the clamp release position. Since the movement of the book clamping mechanism is prevented, there is no possibility that the book is clamped on the polishing drum. For this reason, the safety of the work can be significantly improved, and the polishing drum can be prevented from being damaged due to biting of the book.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view showing a book end surface polishing apparatus according to a first embodiment of the present invention.

FIG. 2 is a partially broken plan view showing a configuration of a main part of FIG. 1;

FIG. 3 is a partially broken front view similar to FIG. 2;

FIG. 4 is a view corresponding to FIG. 2, showing a state in which the book clamp mechanism has been moved to an end point position.

FIG. 5 is a diagram corresponding to FIG. 3, similar to FIG. 4;

FIG. 6 is a diagram corresponding to FIG. 3, showing a state in which a book clamp is released.

FIG. 7 is a diagram corresponding to FIG. 6, showing a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Book end surface polishing apparatus 2 Polishing table 3 Case 4 Top plate 8 Polishing drum 9 Book clamp mechanism 10 Fixed clamp member 11 Movable clamp member 12 Mounting bracket 13 Connecting material 17 Guide rod 20 Start point stopper 21 End point stopper 22 Return spring 23 Spring 24 Clamp handle 25 book 27 fulcrum shaft 28 handle 30, 40 pressing mechanism 32 push rod 33 operation spring 34 cam 34 a cam surface 35 clamp release pin 36 clamp release part 44 link member 45, 46 pivot pin 47 stopper

Claims (5)

[Claims] 1. A polishing table having a polishing drum which is driven to rotate about a substantially horizontal axis, and an end surface of a book which is moved on the polishing drum while clamping an arbitrary number of books mounted on the polishing table. A book clamping mechanism comprising: a book clamping mechanism for polishing the surface of the book; the book clamping mechanism comprising: a fixed clamp member located on the worker side; A movable clamp member that moves and clamps a book between the fixed clamp member; a spring that biases the movable clamp member in a direction away from the fixed clamp member; A mounting bracket integrally connected to the fixed clamp member; a mounting bracket mounted on the mounting bracket so as to be vertically swingable and swinging to a bottom dead center position. A clamp handle serving as an operation handle for moving the book clamp mechanism; and interlocking with the swing of the clamp handle, swinging the clamp handle at the top dead center position to the bottom dead center position, thereby providing the movable clamp. And a pressing mechanism for pressing the member against the fixed clamp member against the biasing force of the spring. 2. The book clamp mechanism includes a guide rod penetrating the fixed clamp member, the movable clamp member, and the mounting bracket and having a start point stopper and an end point stopper at both ends. 2. The book end surface polishing apparatus according to claim 1, further comprising a return spring for urging the book end face. A pressing mechanism slidably mounted on the mounting bracket; an operating spring interposed between a tip of the push rod and the movable clamp member; 3. The book end surface polishing apparatus according to claim 1, wherein the cam surface includes a cam that slides on a base end of the push rod. 4. The pressing mechanism has a push rod slidably mounted on a mounting bracket, an operation spring interposed between a tip of the push rod and a movable clamp member, and one end pivotally mounted on a clamp handle. 3. The book end surface polishing apparatus according to claim 1, further comprising a link member pivotally connected to a base end of the push rod and transmitting the movement of the clamp handle to the push rod. 5. The clamp handle has a clamp release pin that swings downward by swinging to the top dead center side, and the polishing table has a concave clamp release portion on the upper surface of the clamp release position. In a position other than the release of the clamp, the clamp release pin abuts on the upper surface of the polishing table by swinging toward the top dead center side of the clamp handle to prevent the clamp handle from swinging to the top dead center position. In the position of the clamp release section, the tip of the clamp handle engages with the clamp release section by swinging toward the top dead center side of the clamp handle, and the swing of the clamp handle to the top dead center position is allowed. The book end face polishing apparatus according to claim 1, 2, 3, or 4, wherein the apparatus prevents movement.