JPH0410995A - Carriage moving apparatus and automatic processing apparatus - Google Patents

Abstract

PURPOSE:To prevent the lowering of moving accuracy due to the generation of unnecessary stress in the direction crossing the moving direction of a carriage at a right angle by mounting the first connection member mounted on a running member and the second connection member mounted on a carriage and connected to the first connection member so as to be freely moved in the direction crossing the moving direction of the carriage at a right angle. CONSTITUTION:The first connection member 50 has a bearing holder 52 also used as the connection plate 1 connecting both end parts of a steel belt 17a and the bearing 53 composed of the ball bush bearing fitted in and held to the bearing holder 52. The second connection member 51 has the shaft holder 54 mounted on the side end surface of a Y-direction carriage 11a and the shaft 55 held at both end parts thereof by the support piece parts 54a, 54b of the shaft holder 54 and having the midway part piercing through the bearing 53 in a freely movable manner. In the connection means thus constituted, the first and second connection members 50, 51 become relatively movable only in the axial direction of the shaft 55 by the fitting operation of the bearing 53 and the shaft 55.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to a carriage moving device, as well as an automatic drawing device equipped with the carriage moving device, an automatic plate making register mark drawing device, and a coordinate reading device. , relating to automatic processing devices such as cutting devices.

(Prior Art) In recent years, processing means such as pens, sensors, cutters, etc. are moved by moving a carriage reciprocally guided by a guide means via a carriage moving device to process the object. Various automatic processing devices designed to obtain such information have been put into practical use.

Conventionally, in this type of automatic processing equipment, racks have been used as carriage moving devices to move the carriage back and forth, because they are less affected by elongation and can perform stable moving operations compared to those that use toothed belts. Carriage moving means using a pinion and a pinion are often used.

However, the rack and pinion type has problems such as high noise, high cost, and the inability to increase the running speed very much.

Recently, as a solution to these problems, a metal flat belt, a so-called steel belt, has been installed to run along the path of the carriage, and the movement of the steel belt as it travels is controlled. A carriage moving device configured to transmit information to the carriage via a connecting means has been developed and is being put into practical use.

Further, the connecting means has a structure in which one end of the rigid connecting fitting is fixed to the steel belt, and the other end is fixed to the carriage.

However, with such a conventional connection structure, if the guide means that guides the carriage and the running line of the steel belt are not parallel, depending on the inclination of the running direction,
A force is generated between the carriage and the steel belt in the direction of drawing them together or pushing them apart.

This disturbs the linear running accuracy of the carriage and causes sideways skidding between the steel belt and the boot, causing cumulative errors.

In reality, due to component precision and assembly errors, the guide means for guiding the carriage and the running line of the steel belt may not always be completely parallel, and may vary slightly (0.1 m in 1 m).
Parallel deviation of about 100 m) always occurs.

Generally, efforts are made to reduce assembly errors and prevent them as much as possible, but the current situation is that they cannot be completely eliminated.

Further, the effect of expansion and contraction due to heat (approximately 0.1 degrees at 10° C.) also causes unnecessary stress in the direction perpendicular to the moving direction of the carriage at the connecting portion, causing a similar problem.

This phenomenon occurs in automatic drafting equipment, plate-making register mark automatic drawing equipment, and
In automatic processing devices such as coordinate reading devices and cutting devices,
If ignored, it will become a phenomenon that cannot be ignored.

(Problem to be Solved by the Invention) As described above, conventional carriage moving devices that use a running strip such as a steel belt have a structure in which the carriage and the running strip are connected by a rigid connecting fitting. There is.

For this reason, if a force is generated between the running strip and the carriage in a direction perpendicular to the carriage's moving direction due to the mutual parallelism of the members or the influence of heat, this cannot be absorbed, and the force is generated between them. Unnecessary stress is generated, which may disrupt the linear running accuracy of the carriage or cause the running strip to skid.
This causes cumulative errors.

Furthermore, there was a serious problem in that the accuracy of carriage movement could not be increased beyond a certain level.

In addition, in automatic processing equipment that is capable of processing objects to be processed by moving processing means in accordance with the movement of the carriage, conventional carriage movement equipment cannot move the carriage with accuracy beyond a certain level. As a result, it is not possible to increase the movement accuracy of the processing means that moves integrally with the carriage beyond a certain level, and processing such as recording, reading, and cutting that meets high-precision needs cannot be performed. There was such a problem.

The present invention has been made to solve the above-mentioned problems, and its first object is to provide a carriage that is reciprocatably guided by a guide means and a carriage that is stretched so as to run along the movement path of the carriage. In a carriage moving device in which the carriage is connected to a running strip through a connecting means and the carriage is moved as the running strip moves, the problem is caused by the generation of unnecessary stress in a direction perpendicular to the moving direction of the carriage. It is an object of the present invention to provide a carriage moving device that can prevent a decrease in movement accuracy and move a carriage with high precision.

The second object is to move a carriage reciprocally guided by a guide means via a carriage moving device, and to move the processing means in accordance with the movement of the carriage. In an automatic processing device that can perform processing for The aim is to provide an automatic processing device that can perform highly accurate processing.

[Structure of the Invention] (Means for Solving the Problems) The present invention provides, as a first means for achieving the above-mentioned first object, a carriage that is reciprocally guided by a guide means and movement of this carriage. A carriage moving device in which a running strip stretched so as to run along a road is connected via a connecting means, and a carriage is moved as the running strip runs. , a first connecting member attached to the running strip, and a second connecting member attached to the carriage and movably connected to the first connecting member in a direction perpendicular to a moving direction of the carriage. It is structured as follows.

Further, as a second means for achieving the second object, a carriage guided reciprocally by a guide means is moved via a carriage moving device, and the processing means is moved in accordance with the movement of the carriage. In an automatic processing apparatus that is capable of processing objects to be processed by a first connecting member attached to the running strip body, and a second connecting member attached to the carriage and movably connected to the first connecting member in a direction perpendicular to the moving direction of the carriage. The vehicle is configured to include a connecting means for transmitting the movement of the traveling strip to the carriage during traveling.

(Operation) That is, according to the first means, the movement of the running strip is transmitted to the carriage via the connecting means and moves together with the carriage. Further, at this time, the connecting means connects the first connecting member attached to the running strip and the second connecting member attached to the carriage so as to be movable in a direction orthogonal to the moving direction of the carriage. Since the configuration includes a connecting member, only the force in the running direction is transmitted between the running strip and the carriage, and the force in the direction perpendicular to the moving direction of the carriage due to the influence of parallelism or heat is transmitted between the running strip and the carriage. This can be absorbed by the movement of the second connecting member. As a result, unnecessary stress is not generated between the running strip and the carriage unlike in the case of fixed connection in the past, and it is possible to prevent a decrease in movement accuracy due to the generation of unnecessary stress, and to improve accuracy. High carriage movement is possible.

Further, according to the second means, the movement of the running strip is transmitted to the carriage via the coupling means and moves together with the carriage.

Further, at this time, the connecting means connects the first connecting member attached to the running strip and the second connecting member attached to the carriage so as to be movable in a direction orthogonal to the moving direction of the carriage. Since the configuration includes a connecting member, only the force in the running direction is transmitted between the running strip and the carriage, and the force in the direction perpendicular to the moving direction of the carriage due to the influence of parallelism or heat is transmitted between the running strip and the carriage. This can be absorbed by the movement of the second connecting member. As a result, unnecessary stress is not generated between the running strip and the carriage, unlike in the case of conventional fixed connection, and it is possible to prevent a decrease in movement accuracy due to the generation of unnecessary stress. The movement accuracy of the processing means that moves together with the movement of the processing means is improved. This enables highly accurate automatic processing of the object to be processed.

(Example) An example of the present invention will be described below with reference to FIGS. 1 to 6.

FIG. 2 shows the appearance of an automatic drawing device as an automatic processing device.
A drawing table 3 is provided as a horizontal table for placing the workpiece.

Further, on the upper surface side of the drawing table 3, a recording means, such as a ben 4, which is a processing means is provided. This pen 4 is moved in the front-rear direction (hereinafter referred to as the Y direction) and the left-right direction (hereinafter referred to as the X direction) by a pen moving means 5 to be described later to draw a predetermined diagram on the drawing paper 2. There is.

Further, an operation panel 6 is provided protruding from the front edge of the drawing table 3, so that various information necessary for drawing can be inputted as appropriate.

In addition, 7.8.9 in the figure is a cover that covers the pen moving mechanism 5, a control device (not shown), and other attached equipment so that they are not exposed to the outside, and has a disaster prevention effect, a noise prevention effect,
It is designed to have a dustproof effect and a design effect.

Next, the configuration of the pen moving means 5 will be explained with reference to FIGS. 3 to 6.

As shown in FIG. 3, the first
Guide rails (hereinafter referred to as Y-direction guide rails) 10a and 10b are provided as guide means.

And these Y direction guide rails 10a.

First carriages (hereinafter referred to as Y-direction carriages) lla and llb are reciprocatably mounted on 10b.

Note that dust-proof belts (not shown) are stretched along the upper surfaces of the moving paths of the Y-direction carriages lla and llb, that is, the upper surfaces of the Y-direction guide rails 10a and 10b, to prevent the adverse effects of dust. It is now possible to do so.

Furthermore, these Y direction carriages 11a.

An Al guide rail (hereinafter referred to as an X-direction guide rail) 12 serving as a second guide means is installed on the rail 11b with both ends fixed.

The left Y-direction carriage 11b is attached to the Y-direction guide rail 10b so as to be movable in a direction orthogonal to the length direction. The movement of this part allows it to be absorbed.

In addition, the X-direction guide rail 12 includes a second carriage (
13 (hereinafter referred to as a -X direction carriage) is attached to the X direction carriage 13 so as to be able to freely reciprocate, and a pen 4 is attached to the X direction carriage 13 via a pen holder 14, as also shown in FIG.

The Y-direction carriages lla and llb are the first
By the Y-direction carriage moving device 15 as a carriage moving means, the X-direction carriage 13 is
Each of the carriages is moved by a predetermined amount by an X-direction carriage moving device 16 serving as a second carriage moving means.

Further, the Y-direction carriage moving device 15 has the following structure.

That is, flat belts made of stainless steel and having a thickness of about 1 stg, so-called steel belts 17a and 17b, are stretched along the Y-direction guide rails 10a and 10b. These steel belts 17a, 17b
are formed into an endless shape by connecting both ends of each belt via a belt connecting plate 18.

The steel belt 17a on the right side is connected to drive pulleys 19a arranged at both ends of the Y-direction guide rail 10a.
By being stretched around the driven pulley 20a, the belt is stretched horizontally with the belt surface facing upward. Further, the left steel belt 17b is stretched around a driving pulley 19b and a driven pulley 20b arranged at both ends of the Y-direction guide rail 10b, so that the belt surface is stretched horizontally upward.

The drive pulleys 19a and 19b, on which the steel belts 17a and 17b are stretched, have a crown R with a slightly larger diameter in the center to prevent the belts from meandering, and also to prevent slipping. Therefore, the driving pulley 19a is coated with a high friction material on its circumferential surface.

The driving force of the belt 19b is properly and reliably transmitted to the steel belts 17a and 17b.

In addition, as shown in FIG.
Pivotally supported by bearing members 23° 23 arranged in parallel above,
Although not shown, the left drive pulley 19b is also supported in the same way.

Further, these driving pulleys 19a and 19b are connected to each other via a synchronizing shaft 25, as shown in FIG.

Further, the driving force of a motor 27, which is a driving source, is transmitted to this synchronous shaft 25 via a speed reduction mechanism 26 consisting of a gear group.
a and the Y-direction carriage lla are connected to each other by a first connecting means 30, which will be described later, and also to the left steel belt 17b.
and the Y-direction carriage 11b are connected by a second connecting means 31, respectively.

Thus, the driving force of the motor 27 is transmitted to the synchronous shaft 25 via the deceleration mechanism 26, and is further transmitted to the drive pulley 19a,
19b. And steel belt 17a,
17b runs, these steel belts 17a, 17b
The Y-direction carriage 11a is connected to the Y-direction carriage 11a via connecting means 30°31.

11b moves in a predetermined direction.

That is, the forward rotation of the motor 27 moves the Y-direction carriages lla, llb in the forward direction (Yp direction), and the reverse rotation of the motor 27 moves the Y-direction carriages lla, llb.
lb moves backward (in the YR force direction).

As the carriages lla and llb move in the Y direction,
The X-direction guide rail 12 on which the direction carriage 13 is movably mounted moves together.

As a result, the X-direction carriage 13 is positioned in the Y-direction.

In addition, in this embodiment, the steel belt 17a (
The distance between the axes of the driving pulley 19a (19b) and the driven pulley 20a (20b) on which the pulley 17b) is stretched is 1200 m.
n, the amount of movement of the Y direction carriage 1la (11b) is 10
00, one revolution of drive pulley 19a (19b) is 20
It is set to 0 mm.

On the other hand, the positioning of the X-direction carriage 13 in the X direction is
This is done by means of a directional carriage movement device 16.

This bag moves the carriage in the X direction! As shown in FIG. 3, the steel belt 16 is provided with a steel belt 35 as a running strip stretched around the drive pulleys 33 and 34 and stretched along the X-direction guide rail 12. The driving force of the motor 36, which is a driving source, is transmitted to the drive pulley 33 via a speed reduction mechanism 37 made up of a group of gears.

Further, the Y-direction carriage moving device 15 and the X-direction carriage moving device 16 are controlled in operation by a control means (not shown), and the X-direction carriage 1
3 is configured to be sent arbitrarily in the X direction and the Y direction depending on the image information. Then, the X direction carriage 1
A ben 4 mounted on the paper 3 faces a predetermined position of the drawing paper 2.

On the other hand, in synchronization with this moving operation, a pen up-and-down mechanism (not shown) attached to the ben holder 32 operates to move the ben 4 toward and away from the drawing paper 2 .

Then, the horizontal movement of Ben 4 by the Y-direction carriage movement device 1115 and the X-direction carriage movement device 16,
By moving the pen 4 up and down by the pen up and down mechanism, a diagram is drawn on the drawing paper 2 according to the drawing information.

Note that a rotation speed detector (not shown) using an encoder is installed between the synchronizing shaft 25 of the Y-direction carriage moving device 15 and between the drive pulley 33 and deceleration mechanism 37 of the X-direction carriage moving device 16. It is located.

Then, the amount of movement of the Y-direction carriages lla, llb and the X-direction carriage 13 is detected, and the respective motors 27
36 motor controller (not shown).

Next, referring to FIGS. 1, 5, and 6, the right Y-direction carriage 11a and the right steel belt 1
7g will be described in detail.

The first connecting means 30 is roughly divided into two members: an IJ1 connecting member 50 attached to the steel belt 17a, and the first connecting member 50 attached to the Y-direction carriage lla.
A second member is connected to the connecting member 50 so as to be movable in a direction (X direction) perpendicular to the moving direction of the Y-direction carriage lla.
It consists of a connecting member 51.

The first connecting member 50 includes a bearing holder 52 that also serves as the connecting plate 18 that connects both ends of the steel belt 17a, and a bearing 53 that is a ball bush bearing (linear bearing) that is fitted and held by the bearing holder 52.

The second connecting member 51 also includes a shaft holder 54 attached to the side end surface of the Y-direction carriage 11a, and a shaft holder 54 attached to the side end surface of the Y-direction carriage 11a.
A shaft 55 whose both ends are held by support pieces 54a and 54b of No. 4 and whose midway portion movably passes through the bearing 53.
and has.

According to the connecting means 30 configured in this way, the first. The second connecting member 50.51 connects the bearing 53 and the shaft 55.
Due to the fitting operation, the shaft 55 can be relatively movable only in the axial direction.

Therefore, when the steel belt 17a moves forward (Y direction) due to the forward rotation of the motor 27 and backward (YR direction) due to the reverse rotation of the motor 27, the movement remains in the Y direction carriage lla. communicated.

In addition, the Y direction carriage 1 due to the influence of parallelism and heat
The force (arrow ΔX) in the direction perpendicular to the moving direction of 1a is the 1st. This can be absorbed by the displacement movement between the bearing 53 and the shaft 55 of the second coupling member 50.51. This results in
Unlike the conventional fixed connection case, unnecessary stress is not generated between the steel belt 17a and the Y-direction carriage 11a, and the linear running accuracy of the Y-direction carriage 11a can be improved.

Therefore, high accuracy is ensured for the Y-direction movement of the ben 4 mounted on the X-direction carriage 13, which moves with the movement of the Y-direction carriage 11a.

On the other hand, the X-carriage connecting means (not shown) that connects the X-direction carriage 13 and the steel belt 35 is also of a sliding type similar to the first connecting means 30, and the X-carriage connecting means (not shown) connects the X-direction carriage 13 and the steel belt 35. High accuracy is also ensured.

In this way, high precision is ensured even when the -pen 4 is moved in the Y direction and the X direction, making it possible to draw with high precision.

Note that the second connecting means 31 and the X-carriage connecting means have the same basic configuration as the first connecting means 30, so a detailed explanation will be omitted.

In the above-mentioned embodiment, the present invention was applied to an automatic drawing device that moves a recording device such as a pen as a processing means, but it is also applicable to an automatic plate-making register mark drawing device for drawing register marks, etc. Also good.

Furthermore, coordinate reading devices that use the processing means as reading means for reading information recorded on the object to be processed, or cutting devices that use the processing means as cutting means such as a cutter that cuts the object to be processed, or other similar devices. It goes without saying that the present invention may be applied to any automatic processing apparatus, as long as it is equipped with a carriage.

Further, the first connecting member 50 of the connecting means 30 is connected by a bearing 53,
Although the second connecting member 51 has been described as being composed of the shaft 55, the opposite combination may be used.

Furthermore, a sliding bearing may be used as the bearing 53.

Furthermore, the first connecting member 50 and the second connecting member 51 may be a combination of a plurality of guide bearings 61 and a guide rail 63, as shown in FIGS. 6 to 8. .

That is, the first connecting member 50 is connected to the steel belt 17a.
The bearing support plate 60 also serves as the connection plate 18 connecting both ends of the bearing support plate 60, and a plurality of guide bearings 61 rotatably held on the bearing support plate 60. Further, the second connecting member 51 is connected to a rail holder 62 attached to the side end surface of the Y-direction carriage lla.
The guide rail 63 is supported on the lower surface side of the horizontal piece 62a of the rail holder 62 and has both sides thereof engaged with the grooves of the guide bearings 61.

Then, the guide rail 63 is the guide bearing 61...
・It may be configured so that it can be slid using as a guide.

In addition, it goes without saying that the present invention is not limited to the above-mentioned embodiments, and can be implemented in various modifications without departing from the gist.

[Effects of the Invention] Since the present invention is configured as described above, the following effects are achieved.

In the carriage moving device according to claim 1, the connecting means for transmitting the movement of the running strip to the carriage is connected to a first connecting member attached to the running strip and to the first connecting member attached to the carriage. Since the configuration includes a second connecting member that is movably connected in a direction perpendicular to the moving direction of the carriage, only the force in the running direction is transmitted between the running strip and the carriage, and the influence of parallelism deviation and heat is transmitted between the running strip and the carriage. The force in the direction perpendicular to the moving direction of the carriage due to the first . This can be absorbed by the movement of the second connecting member. As a result, unnecessary stress is not generated between the running strip and the carriage unlike in the case of fixed connection in the past, and it is possible to prevent a decrease in movement accuracy due to the generation of unnecessary stress, and to improve accuracy. High carriage movements can be made.

According to the automatic processing device according to claim 2, the connecting means for transmitting the movement of the running strip to the carriage is connected to a first connecting member attached to the running strip and to the first connecting member attached to the carriage. Since the configuration includes a second connecting member movably connected in a direction perpendicular to the moving direction of the carriage, only the force in the running direction is transmitted between the running strip and the carriage, preventing parallelism deviation and heat. The force in the direction perpendicular to the carriage movement direction due to the influence is the first. This can be absorbed by the movement of the second connecting member. As a result, unnecessary stress is not generated between the running strip and the carriage, unlike in the case of conventional fixed connection, and it is possible to prevent a decrease in movement accuracy due to the generation of unnecessary stress. The movement accuracy of the processing means that moves with the movement of the processing means is improved.

Thereby, highly accurate automatic processing of the object to be processed can be performed.

[Brief explanation of the drawing]

1 to 6 show an embodiment of the present invention,
Fig. 1 is a schematic plan view showing the configuration of the main parts, Fig. 2 is an external perspective view of the automatic drawing device, Fig. 3 is a schematic plan view of the pen moving means, and Fig. 4 is the configuration of the drive boob. FIG. 5 is a schematic side view showing the structure of the main part with a partial cross section, FIG. 6 is a schematic front view showing the same partially in cross section, and FIGS. 7 to 9 7 is a schematic plan view, FIG. 8 is a schematic side view partially sectional, and FIG. 9 is a schematic front view partially sectional. be. 2...Drawing paper (workpiece), 4...Pen (processing means) 10a, 10b=...Guide means, 11a. 11b... Carriage, 15... Y direction carriage moving device (carriage moving device), 17a, 17b Steel belt (running strip), 30... Connecting means, 50
...first connection member, 51...second connection member. Applicant's Representative Patent Attorney Takehiko Suzue

Claims (5)

[Claims] (1) A carriage guided reciprocally by a guide means and a running strip stretched so as to run along a moving path of the carriage are connected via a connecting means, and the running strip is In a carriage moving device configured to move a carriage in accordance with a second movably connected in a direction orthogonal to the
A carriage moving device characterized in that it is configured to include a connecting member. (2) A carriage guided reciprocally by the guide means is moved via a carriage moving device, and the processing means is moved in accordance with the movement of the carriage, thereby processing the object to be processed. In the automatic processing device, the carriage moving device includes: a running strip stretched so as to run along a guide means for reciprocally guiding the carriage; and a first connecting member attached to the running strip. and a second connecting member attached to the carriage and movably connected to the first connecting member in a direction perpendicular to the moving direction of the carriage, and a connection that transmits movement of the running strip to the carriage when the running strip is traveling. An automatic processing device characterized in that it is configured to include means. (3) The automatic processing apparatus according to claim 2, wherein the processing means is a recording means for recording information on the object to be processed. (4) The automatic processing apparatus according to claim 2, wherein the processing means is a reading means for reading information recorded on the object to be processed. (5) The automatic processing apparatus according to claim 2, wherein the processing means is a cutting means for cutting the object to be processed.