JP2000024789A - Drive transmission mechanism of tubular roller table - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drive transmission mechanism of tubular roller table which has a simple annular chain mounting construction, prevents tooth jumping and is easy for chain tension adjustment. SOLUTION: Third drive transmission bodies 3 are arranged to both end rotary shaft of tubular rollers (p) arranged in series at a prescribed pitch, a comb teeth like fork has a depth dimension submerging in a tubular roller (p) surface, a pair of second drive transmission bodies 2 facing each other right under the third drive transmission body 3, a band like body 4 for connecting is annularly spread to the third/second drive transmission bodies 3, 2 positioned in a pair at the upper and lower side, further a first drive transmission body 1 is horizontally arranged with directly connecting in parallel to a rotary shaft 2a of the second drive transmission 2 positioned at the lower side to have a double rotary body construction, the drive band like body 5 in contact with an outer peripheral part of the first drive transmission body 1 is annularly circulated through the first drive transmission body 1 and a tension idling gear by a prime rotary body 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive transmission mechanism for a pipe roller table in which a comb-like fork of a fork-type loader / unloader used for loading and unloading a work in a laser processing machine and other plate processing machines can freely move in and out. .

[0002]

2. Description of the Related Art FIG. 3A shows a drive transmission mechanism of a pipe roller table in which a comb-shaped fork of a fork type loader / unloader used for loading and unloading a work in a laser processing machine and other plate material processing machines can freely move in and out. ,
(B) As shown in (b), a plurality of pipe rollers of a pipe roller table arranged in a plurality of rows at a predetermined pitch and a pipe roller is provided so that a comb-shaped fork of a fork-type loader / unloader can freely come and go in a gap between the pipe rollers. The sprocket is rotatably supported so as to mesh with the sprocket directly connected to the pipe roller at the peaks and valleys, and is disposed in the pipe roller table frame. It is customary that a chain, which is annularly stretched in a tusk-like manner, circulates and rotates through an idler sprocket by a driving action of a driving sprocket having a driving source to function as a pipe roller table.

[0003]

However, in the above-mentioned conventional example, the chain length is considerably longer than the length of the pipe roller table. There are problems such as slackening, tooth spikes on the driving sprocket, and deformation of the pipe roller table frame as the bow is pulled by the starting torque when starting the pipe roller table.

The present invention has been made by paying attention to the above points, and has a simple annular chain hooking structure instead of a complicated chain hooking structure by changing the arrangement configuration and the like of sprockets to prevent tooth jump. An object of the present invention is to provide a drive transmission mechanism for a pipe roller table in which the tension of a chain can be easily adjusted.

[0005]

The present invention can solve the above-mentioned problems by providing the following constitution.

(1) A drive transmission mechanism for a pipe roller table in which a comb-shaped fork of a fork-type loader / unloader used for loading and unloading a work in a laser processing machine and other plate material processing machines can freely move in and out. A third drive transmission rotating body for rotational drive is provided on a rotating shaft at both ends of the pipe rollers continuously provided at a pitch, the comb-shaped fork has a depth dimension that sinks below the surface of the pipe roller, and A pair of second drive transmission rotators are provided directly below the drive transmission rotator, and a pair of third and second drive transmission rotators are vertically positioned and connected to each other in a ring shape. A first drive transmission rotator is provided laterally in parallel with a rotation axis of the second drive transmission rotator positioned further below to form a double rotator structure, and an outer peripheral portion of the first drive transmission rotator In contact with the rotational drive transmission The driving belt for rotating the driving belt is circularly rotated by a driving rotor having a driving source via a plurality of the first driving transmission rotors and a tensioning vehicle connected in multiple rows. Transmission mechanism for the pipe roller table.

(2) The first, second, and third drive transmission rotating bodies are sprockets or pulleys, and are made of metal or hard resin such as engineering plastic. Drive transmission mechanism for pipe roller table.

(3) The pipe roller table according to (1), wherein the driving belt and the connecting belt are formed in a chain shape and made of metal or hard resin such as engineering plastic. Drive transmission mechanism.

(4) The pipe roller according to the above item (1), wherein the driving belt and the connecting belt are belt-shaped and made of a soft resin or a synthetic rubber having a large friction coefficient. Table drive transmission mechanism.

(5) The first, second, and third drive transmission rotating bodies and the like are formed as sprockets or pulleys, and the drive belts and the connection belts are formed as chains or belts. The rotating body is made of a metal or a hard resin, respectively, and the driving belt and the connecting belt are made of a metal or a hard resin, or a soft resin or a synthetic rubber having a large friction coefficient, respectively. A drive transmission mechanism for a pipe roller table according to the above item (1), wherein the latter material is appropriately combined.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below.

FIG. 1A is an explanatory view showing the configuration of a drive transmission mechanism for a pipe roller table according to the present invention, and FIG. 1B is a partially enlarged view showing the details of the drive transmission mechanism for a pipe roller table according to the present invention. 2A is a plan view showing an example of the arrangement of processing lines, FIG.
3 (c) is a side view, FIG. 3 (a) is an external perspective view showing a conventional example, FIG. 3 (b) is an explanatory view showing the structure of the conventional example, and FIG. It is a side view which shows the state which performed.

First, an outline of a laser processing line including a pipe roller table having a drive transmission mechanism of the present invention will be described with reference to FIGS. 2 (a), 2 (b) and 2 (c). A hydraulic lifter is installed below, and a work pallet on which the works W are accumulated and stored is placed.
Around the hydraulic lifter and the work pallet, two chains are circulated on both outer sides in the width direction of the work pallet (in the direction perpendicular to the paper surface in FIG. 2C), and the inner work length of the entire length of the chain is provided between the two chains. The pipe roller is stretched by an amount equivalent to the above.

A pipe roller table according to the present invention is installed on the downstream side (on the lower side of the drawing in FIG. 2A) of the single sheet take-up device. As shown in FIGS. 2 (a) and 2 (b),
A laser processing machine L is installed on the right side of the pipe roller table, and a pipe roller table similar to the pipe roller table is installed on the right side of the laser processing machine L.

A guide rail G extends laterally and extends above the two pipe roller tables via a column with the laser processing machine L interposed therebetween, and a fork-type loader / unloader F runs on the guide rail G.
The work W is conveyed from the preceding pipe roller table to the laser processing machine L and from the laser processing machine L to the subsequent pipe roller table.

A pallet for accumulating products processed by the laser processing machine L is installed on the downstream side of the pipe roller table at the subsequent stage (on the upper side of the paper in FIG. 2A).

Next, the drive transmission mechanism of the pipe roller table according to the present invention will be described with reference to FIGS. 1A and 1B, where p is a pipe roller, 1 is a first drive transmission rotating body, Is a second drive transmission rotary member, 3 is a third drive transmission rotary member, 4 is a connecting belt, 5 is a driving belt, 6 is a tensioning vehicle, 7 is a driving rotary member, and the laser processing machine L And drive transmission of a pipe roller table in which a comb-like fork f of a fork type loader / unloader F used for loading and unloading of a workpiece W in another plate material processing machine can freely move between a pipe roller p and an adjacent pipe roller p. In the mechanism, a third drive transmission rotating body 3 composed of a sprocket or a pulley for rotational drive is provided on a rotating shaft at both ends of a pipe roller p continuously provided at a predetermined pitch, and the comb tooth-shaped fork f A second drive transmission rotating body 2 such as a sprocket or a pulley, which is opposed to a pair and has a depth dimension to be immersed below the surface of the roller p and is provided directly below the third drive transmission rotating body 3, is positioned vertically. Then, a connecting band 4 such as a chain or a belt is stretched annularly around the pair of the third and second drive transmitting rotators 3 and 2, and the rotation of the second drive transmitting rotator 2 located further below is rotated. First drive transmission rotating body 1 composed of a sprocket or a pulley directly connected and parallel to shaft 2a
Horizontally rotating body (double sprocket structure)
The driving belt-like members 5 for transmitting the rotational drive in contact with the outer peripheral portion of the first drive transmitting rotary member 1 are provided in a plurality of rows in a row. It is configured to rotate circularly by a driving rotating body 7 having a driving source (not shown) via an idle vehicle 6.

When the belt-like body is a belt, the cross-sectional shape is circular or similar to a circle, or V-shape or similar to a V-shape. In this case, the shape may be such that the pulley grooves are engaged and engaged. .

The above structure and FIGS. 2 (a) and 2 (b)
The operation will be described based on (c).

Workpieces W are accumulated and stored on a pallet placed on a hydraulic lifter located below the single-sheet pick-up device. The vacuum pad of the single-sheet pick-up device is lowered to pick up one work W and lift it. And two pipes are stretched annularly so as to cover the hydraulic lifter, and a plurality of pipe rollers are continuously connected and extended between the two chains. Circulates and rotates on the uppermost work W of the pallet on the hydraulic lifter, and enters the vacuum pad. The work W lifted by the above is placed on the vacuum pad by moving down the vacuum pad, and the suction action is released.

The work W placed on the pipe roller starts moving by the rotating action of the two chains and is transferred to a pipe roller table arranged adjacently. Incidentally, the fork-type loader / unloader F was previously moved to a predetermined position above the pipe roller table,
Subsequently, the comb-shaped fork f is immersed between the pipe rollers of the pipe roller table to be lowered, and when the work W is transferred to the pipe roller table and reaches a predetermined position, the comb-shaped fork f The workpiece W is placed on the upper surface of the comb-shaped fork f, and further raised to a predetermined height. Then, the fork-type loader / unloader F travels horizontally along the guide rail G and is located above the laser beam machine L at a predetermined position. Then, the comb-shaped fork f is lowered, and then lowered until the work W is mounted on the work supporting machine of the laser beam machine L, and the work W is mounted on the work supporting machine. Then, the comb tooth-shaped fork f is surely separated from the lower surface of the work W, and the comb tooth-shaped fork f sinks between the work supporting machines. Dentate fork f is moved backward horizontally from its position, rose withdrawn from below the workpiece W, so that the wait in a safe position without a trouble in subsequent processing operations.

Next, the clamping device of the laser processing machine L clamps the work W, and the laser processing operation is performed. When the laser processing is completed, the fork-type loader / unloader F starts to operate again, and after the work W is processed. The product moves down and horizontally forward until the comb-shaped fork f is inserted under the product, stops at a predetermined position, and places the product on the upper surface of the comb-shaped fork f to raise the product. , Stops at a predetermined height position, horizontally moves to a predetermined position on the pipe roller table in the next process, and then starts a descending operation, and the pipe roller p of the pipe roller table is started.
When the product is placed thereon, the comb tooth-shaped fork F is further sufficiently separated from the lower surface of the product, and then the driving roller 7 is rotated by a driving source (not shown) by the pipe roller p of the pipe roller table. And the tensioning wagon 6 and the driving strip 5
The first drive transmission rotating body 1 is rotationally driven through the
a, the second drive transmission rotator 2, which is directly connected to and parallel to the second drive transmission rotator 2 and forms a double rotator structure, is simultaneously driven to rotate. The drive transmission rotator 3 is driven to rotate, and the pipe roller f of the pipe roller table sharing a rotation axis with the third drive transmission rotator 3 is rotated to load the product and transfer it to the next accumulation pallet. The fork-type loader / unloader F moves up the safety area after the product has been separated from the pipe roller table, moves horizontally to a predetermined height, and moves forward. It returns to the pipe roller table position of the process, descends, and is in a state of waiting for the next processing step with the comb-shaped fork f immersed between the pipe rollers p.

The first, second, and third drive transmission rotating bodies are formed in a sprocket or pulley shape, and the driving band and the connecting band are made of metal or a hard resin such as engineering plastic, and are formed in a chain shape. Metal or hard resin such as engineering plastics, the belt for driving and the belt for connection may be in the form of a belt, and may be made of a soft resin or a synthetic rubber having a large friction coefficient. 2. The shape of the third drive transmission rotating body or the like is a sprocket or a pulley, the shape of the drive belt and the connection belt is a chain or a belt, and the drive transmission rotor is made of metal or hard resin, respectively. The driving band and the connecting band are made of a metal or a hard resin, a soft resin having a high friction coefficient, or a synthetic resin, respectively. And the system may be configured by appropriately combining the former and the latter material.

As described above, according to the present invention, the load torque is dispersed by employing the double sprocket structure, and the total length of the driving chain is reduced to approximately half (1/2) of the conventional one, which is complicated. There is no chain hooking, and therefore, there is little slack, and a synergistic effect of facilitating tension adjustment is obtained.

[0025]

According to the present invention, the arrangement and the like of the sprocket are changed, and a simple annular chain hooking structure is used instead of a complicated chain hooking structure. Tooth jumping is prevented, and the tension of the chain can be easily adjusted. Take effect.

[Brief description of the drawings]

1A is an explanatory view showing a configuration of a drive transmission mechanism of a pipe roller table according to the present invention; FIG. 1B is a partially enlarged perspective view showing details of a drive transmission mechanism of the pipe roller table according to the present invention;

2A is a plan view showing an example of the arrangement of processing lines, FIG. 2B is a front view thereof, and FIG.

3A is an external perspective view showing a conventional example, and FIG. 3B is an explanatory view showing a configuration of the conventional example.

FIG. 4 is a side view showing a state in which a comb-shaped fork is submerged below the surface of a pipe roller.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 1st drive transmission rotary body (a sprocket or a pulley etc.) 2 2nd drive transmission rotary body (a sprocket or a pulley etc.) 2a Rotating shaft 3 3rd drive transmission rotary body (a sprocket or a pulley etc.) 4 Connection belt (chain or pulley) 5) Drive belt (chain, belt, etc.) 6 Tensioning pulley (sprocket, pulley, etc.) 7 Drive rotating body (sprocket, pulley, etc.) F Fork-type loader / unloader f Comb-shaped fork L Laser beam machine p Pipe Roller W Work

Claims (5)

[Claims] 1. A drive transmission mechanism for a pipe roller table in which a comb-shaped fork of a fork-type loader / unloader used for loading and unloading a work in a laser processing machine and other plate material processing machines is provided with a predetermined pitch. A third drive transmission rotating body for rotational drive is provided on both end rotation shafts of the pipe rollers connected in series, and the comb-shaped fork has a depth dimension that sinks below the pipe roller surface, and the third drive A pair of opposing second drive transmission rotators are provided directly below the transmission rotator, and a connecting band is annularly stretched over the pair of third and second drive rotators located above and below. Further, the first drive transmission rotating body is provided horizontally to be directly connected to and parallel to the rotation axis of the second drive transmission rotating body located further below to form a double rotating body structure, and on the outer peripheral portion of the first drive transmission rotating body. Contact for rotational drive transmission A pipe, wherein a driving belt is circularly circulated and rotated by a driving rotor having a driving source via a plurality of the first driving transmission rotors and a tensioning pulley arranged in multiple rows. Drive transmission mechanism for roller table. 2. The pipe according to claim 1, wherein the first, second, and third drive transmission rotating bodies have a sprocket or pulley shape, and are made of metal or a hard resin such as engineering plastic. Drive transmission mechanism for roller table. 3. The driving belt and the connecting belt are each
2. The drive transmission mechanism for a pipe roller table according to claim 1, wherein the drive transmission mechanism is made of a metal or a hard resin such as engineering plastic. 4. The driving belt and the linking belt,
The drive transmission mechanism for a pipe roller table according to claim 1, wherein the drive transmission mechanism is made of a soft resin or a synthetic rubber that has a belt shape and a large friction coefficient. 5. The drive transmission rotating body, wherein the shape of the first, second, and third drive transmitting rotary members and the like is a sprocket or a pulley, and the shape of the driving belt and the connecting belt is a chain or a belt. The body is made of a metal or a hard resin, respectively, and the driving belt and the connecting belt are made of a metal or a hard resin, a soft resin having a high friction coefficient, or a synthetic rubber, respectively. The drive transmission mechanism for a pipe roller table according to claim 1, wherein the drive transmission mechanism is configured by appropriately combining the above materials.