JPS6141700B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a carriage sliding device that is an improved carriage unit used in automatic assembly machines, etc., and in particular, a fixed member is equipped with a piston that reciprocates with a fluid, and the piston is operated by the piston. This invention relates to an epoch-making carriage sliding device in which a sliding device is built into the carriage unit itself so that the carriage can be slid back and forth.

Conventionally, a device that slides a reciprocating carriage fitted into a fixed member has merely had the function of guiding highly accurate reciprocating motion, and in order to provide driving force to this device, the reciprocating carriage must be equipped with, for example, It was necessary to fix an arm member that reciprocates integrally with the piston of the air cylinder, and to cause the reciprocating table to reciprocate and slide due to the reciprocating movement of the piston. In this way, the conventional carriage sliding device requires an independent air cylinder, which inevitably requires a large space.
The disadvantage was that the entire device became large. In addition, the pressure receiving area on the piston rod side of the piston is smaller than on the opposite side, and the pressure receiving area is different when the piston moves forward and backward, so there is a drawback that the output when the carriage moves forward and when it moves backward is different. .

The present invention has been made to eliminate the above-mentioned drawbacks of the prior art, and its purpose is to incorporate a drive device using fluid pressure such as air as a drive source into the carriage unit itself. Then,
The objective is to enable the carriage unit to be used as a sliding device with a driving function without changing its size, and thereby to downsize the entire device and significantly reduce the installation space. That's true. Another objective is to minimize the offset of the acting force by locating the piston that generates the driving force very close to the carriage that is subjected to the load, thereby reducing the torsional force applied to the carriage. The goal is to reduce losses. Another object is to reduce the cylinder load by reducing the loss of driving force in this manner, thereby making the cylinder durable for frequent use. Still another object is to provide smooth movement and high precision by employing ball bearings in the reciprocating sliding portion. A further object is to enable a single-acting device, for example by installing a spring on the reciprocating side of the piston.

In short, the present invention provides a fixing member having a cylinder chamber and a communication hole communicating with the cylinder chamber for alternately supplying fluid to the cylinder chamber and discharging the fluid from the cylinder chamber, and the fixing member. A lid member is fixed to one end of the fixing member and has a communication groove communicating with the communication hole so as to supply fluid from the outside and discharge fluid to the outside, respectively, and a lid member fixed to the other end of the fixing member. A cylinder lid configured to seal the cylinder chamber by a cooperative action, a carriage slidably fitted into the fixed member via a bearing device, and a carriage slidably fitted into the cylinder chamber. A piston is provided in the intermediate portion with a connecting pin that passes through the fixing member and is fitted into a connecting hole formed in the carriage, and the piston is caused to reciprocate by supplying and discharging fluid from the cylinder lid. The present invention is characterized in that the reciprocating table is configured to slide back and forth along the fixed member via the connecting pin.

The present invention will be explained below based on embodiments shown in the drawings. The carriage sliding device 1 according to the present invention includes a fixed member 2, a cylinder lid 3, a carriage 4, and a piston 5.
It is equipped with

The fixing member 2 has a hollow cylinder chamber 8 formed therethrough in the longitudinal direction, and first and second communication holes 9 communicating with the cylinder chamber.
10 are formed respectively. The first communication hole 9 is
They are formed at both ends of the cylinder chamber 8 over lengths l ₁ and l ₂ (FIG. 6), respectively. Second communication hole 10
is disposed close to the first communication hole 9 and is formed to penetrate in parallel with the cylinder chamber 8 , and one end of the second communication hole communicates with the cylinder chamber 8 .

The cylinder lid 3 is fixed to one end of the fixing member 2, and as shown in FIGS. 1 and 3, a pair of pipe joints 11 and 12 are attached to a pair of threaded parts 3a and 3b formed on the surface. It is fixed. Cylinder lid 3
Arc-shaped communication grooves 3c and 3d are formed on the back surface of the , which communicate with the pair of threaded portions 3a and 3b, respectively, and the upper ends of the communication grooves are connected to the first and second communication holes 9,
10, respectively, and communicate with each other.
A lid member 13 is fixed to the other end of the fixing member 2, and the cylinder chamber 8 is hermetically sealed by the cooperation between the lid member and the cylinder lid 3. Further, a solenoid valve (not shown) is connected to the pair of pipe joints 11 and 12, and the solenoid valve is connected to an air tank (not shown) containing a fluid such as air. Depending on the action, air is alternately supplied to the cylinder chamber 8 via the pipe joints 11 and 12, and air is discharged from the cylinder chamber.

The carriage 4 is formed in a U-shape so as to straddle the fixed member 2 in the longitudinal direction, and as shown in FIGS. 3 and 8, recesses 2a formed on the left and right sides of the fixed member 2 A bearing device, for example, a plurality of balls 17 housed in a flat plate 16 is inserted between two rods 18 from each side between the recesses 4a and 4b formed inside the carriage 4 and facing the recesses. A ball bearing 15 supported by is installed,
The movement of the ball bearing in the longitudinal direction is restricted by cover plates 19 fixed to both sides of the carriage 4. In FIG. 8, the ball bearing 15 on the right side, for example, is pressed by a plurality of retaining screws 23 screwed onto the fixing member 2 via a retaining plate 22, thereby reciprocating with respect to the fixing member 2. It absorbs the lateral play of the table 4 and maintains high accuracy.

As shown in FIGS. 5 and 8, the back surface of the carriage 4 has elongated holes 4c into which two guide pins 24, which are implanted on the top surface of the fixed member 2 with the cylinder chamber 8 in between, are loosely fitted. It is formed. Furthermore, four working holes 4d are formed on the top surface of the carriage 4, facing the four mounting holes 2b formed through the top surface of the fixing member 2, and imaginary lines are shown in FIG. Four threaded parts 4 are used to attach an object 25 such as a clamp mechanism for an automatic machine as shown in FIG.
e is formed.

The piston 5 has annular grooves 5 formed at both ends.
The piston is slidably inserted into the cylinder chamber 3 while being kept airtight by a piston ring 28 press-fitted into the cylinder chamber 8. They alternately abut on stoppers 30 made of elastic bodies fixed to the lid 3 and the lid member 13, respectively. Moreover, in the hole 5b formed in the middle part of the piston 5,
Fits loosely into a long hole 2c formed through the fixing member 2,
A connecting pin 31 that fits into a connecting hole 4f formed in the carriage 4 without a gap is loosely fitted with an appropriate gap.

Then, the cylinder lid 3 is connected via the pipe joints 11 and 12.
The piston 5 is reciprocated by the air supplied to the cylinder chamber 8 and the air discharged from the cylinder chamber, and the reciprocating table 4 is moved along the fixed member 2 via the connecting pin 31 as shown in FIG. arrow A-B
It is configured to slide back and forth in the direction of.

The present invention is configured as described above, and its operation will be explained below. First, as shown in FIG. 2, the fixing member 2 is fixed to the base 35 with the mounting screw 34 inserted into the mounting hole 2b. Next, the object 25 is fixed to the carriage 4 with a mounting screw 26. In this state, due to the action of the solenoid valve,
When air is supplied from the air tank to one pipe joint 11, the air passes through the communication groove 3c and the first communication hole 9 and flows into the cylinder chamber 8 from the direction of arrow C (FIG. 5).
This air pressure causes the piston 5 to slide rightward until it comes into contact with the stopper 30, as shown in FIG.

At this time, the air contained in the cylinder chamber 8 on the right side of the piston 5 is discharged to the outside from the solenoid valve via the second communication hole 10 and the pipe joint 12. When the piston 5 moves to the rightmost side in this way, the action of the solenoid valve is switched, the air supply from one pipe joint 11 is stopped, and the air supply from the other pipe joint 12 is changed.
Air is supplied to the Then, air flows into the cylinder chamber 8 from the direction of arrow D (Fig. 5) through the second communication hole 10, and this air pressure causes the piston 5 to move from the state shown in Fig. 6 to the stopper 30. Slide to the left until they touch. When the piston 5 slides in the cylinder chamber 8 in the left-right direction (in the direction of arrow A-B) in this way, the reciprocating carriage 4 slides along the fixed member 2 in the direction of arrow A-B via the connecting pin 31. move,
Thereby, the object 25 can be reciprocated and a predetermined work can be performed.

In addition, the reciprocating table 4 has one ball bearing 15
By being pressed by the presser screw 23 via the presser plate 22, the looseness between the carriage 4 and the fixing member 2 can be absorbed, so that the carriage 4 can smoothly reciprocate along the fixing member 2. At this time, the connecting pin 31 of the piston 5 moves slightly due to the movement of the carriage 4, but since there is an appropriate gap between the hole 5b of the piston 5 and the connecting pin 31, the piston 5 It can slide smoothly without any excessive force being applied.

When removing the fixing member 2 from the base 35, move the carriage 4 until the working hole 4d matches the mounting hole 2b of the fixing member 2, and loosen the mounting screw 26 from the working hole 4d with a screwdriver. Just do it.

Furthermore, by replacing the left and right cylinder lids 3 and lid members 13 fixed to both left and right ends of the fixing member 2, the direction of the reciprocating movement of the carriage 4 can be changed without changing the direction of the entire device. It is extremely convenient because it can be done.

In the embodiment, air is used as the working fluid, but oil or water may also be used. Furthermore, although a ball bearing is used as the bearing device 15, a plain bearing may also be used. Also, a pair of pipe joints 11 and 12 are used to alternately supply air to the cylinder chamber 8 and discharge air from the cylinder chamber, but only one pipe joint is used to control the forward movement of the piston 5. The piston may be moved forward by air pressure only at times, and may be moved back by a return spring at the time of backward movement. By this,
The device of the invention can also be of a single-acting type. In addition, in the case of the device of the present invention, since the piston 5 does not have a piston rod, the pressure receiving areas on both sides of the piston are equal, so when the same pressure is applied to both sides of the piston, the output during reciprocating motion is This is advantageous in that there is no difference in the Furthermore, since the piston 5 is provided in close proximity to the carriage 4 directly under the load, the offset of the acting force is extremely small, the torsional force acting on the carriage 4 is extremely small, and there is little power loss.

Since the present invention is constructed and operates as described above, the carriage unit itself has a built-in drive device that uses fluid pressure such as air as a driving source, so that the carriage unit can be reduced in size as it is. Can be used as a sliding device with drive function,
As a result, the entire device is downsized and the installation space is significantly reduced. In addition, since the piston that generates the driving force is placed very close to the carriage that is subjected to the load, the offset of the acting force is extremely small, reducing the torsional force applied to the carriage and reducing the loss of driving force. There is a certain effect. In addition, since the loss of driving force is reduced in this way, the cylinder load is reduced, which has the effect of being able to withstand frequent use. Furthermore, since ball bearings are used in the reciprocating sliding part, the movement is smooth and high accuracy is achieved. For example, by attaching a spring to the reciprocating side of the piston, it can be made into a single-acting device.If the device of the present invention is used in an automatic assembly machine, etc., it can save space, reduce costs, and ensure high accuracy. A revolutionary effect can be obtained.

[Brief explanation of the drawing]

The drawings relate to embodiments of the present invention; FIG. 1 is a perspective view of a carriage sliding device according to the present invention, FIG. 2 is a side view taken in the direction of the arrow in FIG. 1, and FIG. 4 is an exploded perspective view of the cylinder lid shown in FIG. 3, FIG. 5 is a plan view of the cylinder lid shown in FIG. 1, and FIG. 6 is a vertical sectional view of FIG. 7
6 is a bottom view of the fixing member shown in FIG. 6, FIG. 8 is a vertical sectional view taken in the direction indicated by the - arrow in FIG. 5, FIG. 9 is a partially cutaway side view taken in the direction shown in FIG. is a vertical sectional view taken along the - arrow in FIG. 5; 1 is a carriage sliding device, 2 is a fixed member, 3 is a cylinder lid, 3c, 3d are communication grooves, 4 is a carriage, 4f
is a connecting hole, 5 is a piston, 8 is a cylinder chamber, 9,
10 is a communicating hole, 13 is a lid member, 15 is a ball bearing which is an example of a bearing device, and 31 is a connecting pin.

Claims (1)

[Claims] 1 A fixing member having a cylinder chamber and a communication hole communicating with the cylinder chamber and alternately supplying fluid to the cylinder chamber and discharging the fluid from the cylinder chamber, and fixed to one end of the fixing member. A communication groove communicating with the communication hole is formed so as to supply fluid from the outside and discharge fluid to the outside, respectively, and by a cooperative action with a lid member fixed to the other end of the fixing member. a cylinder lid configured to hermetically seal the cylinder chamber; a reciprocating table slidably fitted into the fixed member via a bearing device; a piston equipped with a connecting pin that penetrates a fixed member and is inserted into a connecting hole formed in the carriage, and the piston is reciprocated by supplying and discharging fluid from the cylinder lid to move the connecting pin. A carriage sliding device characterized in that the carriage is configured to reciprocate and slide along the fixed member via the fixing member.