JPH0526621B2 - - Google Patents

Description

Detailed Description of the Invention Technical Field The present invention relates to an air cylinder and a carriage sliding device using the same, and in particular to an air supply and exhaust valve equipped with an air action function and regulating the reciprocating sliding speed of a piston. The present invention relates to an air cylinder in which valves for regulating the operation of the air cylinder are arranged centrally on a support member on one side of the air cylinder, and a carriage sliding device that utilizes the same and has good operability and can be significantly downsized.

BACKGROUND ART Conventionally, an air cylinder has air supply/exhaust ports arranged on both left and right end support members, and air is supplied to one port and air is discharged from the other port to cause a piston to slide. Furthermore, air action control valves that adjust the air action function from a position before the maximum stroke is reached are also disposed on the left and right end support members.

However, when such a conventional air cylinder is used in a carriage sliding device, which is an example of a peripheral device of an automatic assembly machine, the air piping drawn out from the support members at both ends of the air cylinder occupies space inside the device. As a result, there were disadvantages such as the size of the reciprocating carriage sliding device and the difficulty in maintaining and inspecting the piping. In addition, the reciprocating sliding speed of the device can be adjusted using the air supply and exhaust valve of the air cylinder built into the automatic assembly machine.
Alternatively, if it becomes necessary to adjust the air action that operates before the maximum stroke is reached, since these control valves are disposed on the support members at both ends of the air cylinder, the control valves can be housed inside the device. Because of this, adjustments had to be made through working holes located at specific locations. Therefore, it is difficult to put the device into operation and operate the control valve, resulting in a disadvantage that the device is difficult to use.

In addition, Japanese Utility Model Publication No. 40-27385 describes an oil cylinder in which the backward speed of the piston during the backward stroke can be changed in two stages, and the slow retraction start period of the backward stroke can also be easily controlled. Although a step retraction device has been disclosed, in this conventional example, the cushioning action is performed only during the backward stroke of the piston, and therefore, during the forward stroke of the piston, the piston stops with an impact. Especially in automatic machines that require high precision, vibration when the piston is stopped poses a problem and it may not be possible to use this method. In addition, since it is configured to also control the start of backward movement, the structure is complicated, and there are disadvantages such as not only high cost but also a high risk of failure. Furthermore, Japanese Utility Model Application No. 56-137929 discloses a piping device for a feed unit that makes it possible to easily and quickly remove the feed cylinder device without removing the control valve. This invention merely facilitates the attachment and detachment of the piston, and does not disclose or suggest any technology regarding the cushioning action during the reciprocating stroke of the piston, and is an invention that is completely different in purpose, structure, and operation and effect from the present invention.

Purpose The present invention has been made in order to eliminate the drawbacks of the prior art described above, and its purpose is to arrange an air supply/discharge passage and a cushion air passage inside the support members at both ends of an air cylinder. The respective passages are connected to each other by an air supply/discharge pipe and a cushion exhaust pipe, and at the same time, a cylinder, a piston, and a piston rod are installed between the two end support members, and the two end support members are fixed with tie rods. Therefore, the throttle valve that adjusts the amount of air supplied to or discharged from the cylinder chamber and the cushion valve for the air action are concentrated on one support member, and the various control valves can be operated centrally at one location. An object of the present invention is to provide an air cylinder with extremely good operability.

Another purpose is that by using the excellent air cylinder as mentioned above, it can be made extremely compact, eliminating the need for piping inside the device, and supplying and exhausting air while the device is in operation. An object of the present invention is to provide a carriage sliding device, which is an example of a peripheral device for an automatic assembly machine, in which adjustment of air movement and air action can be easily performed on one side of the device.

Structure In short, the present invention (specific invention) comprises a piston 2 in which cushion piston portions 12 and 13 are formed on both left and right side surfaces, and the piston is fitted and slidably inserted in an airtight manner through a piston packing 11. a cylinder 3 fixed to the piston 2 and one end 4b
a piston rod 4 which protrudes outside the cylinder;
and communicates with one cylinder chamber 3a of the cylinder 3 so as to be sealed by fitting the flange portion 16 that fits with one end of the cylinder 3 and one cushion portion 12 of the piston 2. 1st
A first air supply/discharge passage 21 that communicates with the small diameter section 18 of the cushion chamber and the first cushion chamber small diameter section, and a first cushion air that communicates with the one cylinder chamber 3a but does not communicate with the small diameter section 18 of the first cushion chamber. a first support member 5 in which a passage 26 is formed; a flange portion 2 that fits into the other end of the cylinder 3;
A second cushion chamber small diameter portion 23 communicates with the other cylinder chamber 3b of the cylinder 3 so as to be sealed when the other cushion piston portion 13 of the piston 2 fits together with the second cushion chamber small diameter portion 23. A second air supply/discharge passage 41 that communicates with the other cylinder chamber 3b of the cylinder 3 is connected to the second cushion chamber small path 23 independently of the second cushion chamber small path 23, and a part thereof is connected to the second cushion chamber small diameter section. Second cushion air passage 4 consisting of communicating passages 55 and 56
6 and a second cushion air passage 47 communicating with the first cushion air passage 26 of the first support member 5 and communicating with the first air supply/discharge passage 21; , the air supply/discharge passage 2 disposed inside the pair of support members 5 and 6;
Air supply/discharge pipe 7 that communicates and connects 1 and 41 with each other
, a cushion exhaust pipe 8 that communicates and connects the cushion air passages 26 and 47 disposed inside the pair of support members 5 and 6, and the piston 2 between the pair of support members 5 and 6. , a tie rod 9 for fixing the pair of support members 5 and 6 with the cylinder 3, the piston rod 4, the air supply/discharge pipe 7, and the cushion exhaust pipe 8 attached; A throttle valve 77 for regulating the amount of air supplied to or discharged from the cylinder chamber 3a and cushion valves 60 and 65 for air action are arranged in a concentrated manner on one of the support members 6. The support member 6 is characterized in that the speed of reciprocating sliding and the air action can be adjusted.

The present invention (second invention) also provides a piston 2 in which cushioning piston portions 12 and 13 are formed on both left and right side surfaces, and the piston is attached to a piston packing 11.
a cylinder 3 which is slidably inserted in an airtight manner via a piston rod; a piston rod 4 which is fixed to the piston 2 and has one end 4b protruding outside the cylinder;
A flange portion 16 that fits into one end of the cylinder 3 and one cushion portion 1 of the piston 2.
A first cushion chamber small diameter portion 18 communicates with one cylinder chamber 3a of the cylinder 3 so as to be sealed when the two are fitted, and a first cushion chamber small diameter portion 21 communicates with the first cushion chamber small diameter portion. A first support member 5 is formed with a first cushion air passage 26 that communicates with the one cylinder chamber 3a and does not communicate with the first cushion chamber small diameter portion 18, and is fitted to the other end of the cylinder 3. The second cushion chamber small path 23 communicates with the other cylinder chamber 3b of the cylinder 3 and the second cushion chamber small path 23 communicates with the other cylinder chamber 3b of the cylinder 3 so that the mating flange portion 24 and the other cushion piston portion 13 of the piston 2 are fitted to be sealed. A second air supply/discharge passage 41 that communicates with the small diameter portion of the second cushion chamber communicates with the other cylinder chamber 3b of the cylinder 3 independently of the second cushion chamber small diameter portion 23, and communicates with the small diameter portion of the second cushion chamber. Passage 5 that communicates with a part of it
Air passage 46 for the second cushion consisting of 5 and 56
and the first cushion air passage 26 of the first support member 5 and the first air supply/discharge passage 2.
a second support member 6 in which a second cushion air passage 47 communicating with the second cushion air passage 47 is formed;
Air supply/discharge pipe 7 that communicates and connects 1 and 41 with each other
, a cushion exhaust pipe 8 that communicates and connects the cushion air passages 26 and 47 disposed inside the pair of support members 5 and 6, and the piston 2 between the pair of support members 5 and 6. , a tie rod 9 for fixing the pair of support members 5 and 6 with the cylinder 3, the piston rod 4, the air supply/discharge pipe 7, and the cushion exhaust pipe 8 attached; The air cylinder 1 has a throttle valve 77 for adjusting the amount of air supplied to the cylinder chamber 3a or discharged from the cylinder chamber 3a, and cushion valves 60 and 65 for air action, which are concentrated on one of the support members 6. a fixing member 71 provided and to which the support members 5 and 6 of the air cylinder are fixed; and a reciprocating table 7 to which one end 4b of the piston rod 4 is fixed.
2, and a bearing device 73 that allows the reciprocating carriage to slide freely on the fixed member 71, and the throttle valve 60 adjusts the amount of air supplied to and discharged from the air cylinder 1. , 65 can be performed on one side of the device.

The present invention will be explained below based on embodiments shown in the drawings. As shown in FIG. 1, an air cylinder 1 according to the present invention includes a piston 2, a cylinder 3, a piston rod 4, a pair of support members 5 and 6, an air supply/discharge pipe 7, and a cushion exhaust pipe 8. and tie rod 9.

As shown in FIG. 2, the piston 2 has a piston packing 1 inserted into an annular groove 10a formed in the center.
1 and a cushion piston portion 12, 1 integrally formed on both sides of the main body.
3, a piston rod attachment part 14 is bored in a blind hole from the side surface of the cushion piston part 12, and a threaded part 14a is formed in a part.

The piston 2, in which the threaded portion 4a at one end of the piston rod is screwed into the piston rod attachment portion 14, is slidably fitted into the cylinder 3 while being kept airtight by the piston packing 11.

The other end 4b of the piston rod 4, in which a mounting groove 4c is formed, protrudes to the outside of the cylinder 3 and is slidably fitted into the first support member 5 via a bush 15.

The first support member 5 includes, as shown in FIG.
flange portion 16 and first cushion chamber large diameter portion 17
, a first cushion chamber small diameter portion 18, a packing chamber 19, a bush mounting portion 20, a first supply/discharge air passage 21, and a first cushion air passage 26 as shown in FIG. As shown in FIG. 2, the flange portion 16 is airtightly connected to the cylinder 3 via an O-ring 30 fitted in an annular groove 16a provided in the flange portion.

A cushion packing 31 is attached to the large diameter portion 17 of the first cushion chamber to maintain airtightness with respect to the cushion piston portion 12.

The first cushion chamber small diameter portion 18 has a diameter and a longitudinal dimension that can accommodate the cushion piston portion 12.

The piston rod 4 is slidably inserted into the bush 15 press-fitted into the bush mounting part 20.
The rod packing 25 installed in the packing chamber 19 makes it possible to maintain airtightness.

Next, the first air supply/discharge passage 21 and the first cushion air passage 2 are formed in the first support member 5.
6 will be explained. As shown in Figure 1, the first
The air supply/discharge passage 21 is bored so as to penetrate from the front face 5a of the first support member to the first cushion chamber small diameter portion 18, and the opening 35a formed in the front face 5a of the first support member is opened with a steel ball 33. It consists of a passage 35 that is sealed and formed, and a connecting passage 36 that is formed by drilling so as to communicate and connect to the passage 35 from the side surface 5b of the first support member that is exposed without being covered by the cylinder 3. There is.

The first cushion air passage 26 is a passage 37 formed by drilling from the side surface 16b of the flange portion.
A passage 38 is formed by drilling a hole from the upper surface 5c of the first support member so as to communicate with the passage 37, and sealing an opening 38a formed on the upper surface of the first support member with a steel ball 33. and a coupling passage 39 formed by drilling from the side surface 5b of the first support member 5 exposed without being covered by the cylinder 3 so as to communicate with the passage 38.

Next, the second air supply/discharge passage 41 and the second cushion air passage 46 formed in the second support member 6,
47 will be explained. Second air supply and exhaust passage 41
A hole is drilled through the second support member 6 from the front surface 6a to the top surface 6c, and an opening 50a formed in the front surface 6a and an opening 53a formed in the top surface 6c are sealed with a steel ball 33. Passage 50 formed
, a pipe joint mounting screw portion 51 formed by drilling from the right side surface 6b of the second support member 6 so as to communicate with the passage 50, and a second support member exposed without being covered by the cylinder 3. Passage 5 from the left side 6d of 6
0, a pipe joint mounting screw portion 52 formed by drilling from the right side surface 6b of the second support member 6, and a small diameter second cushion chamber. There are two types of systems, each consisting of a passage 54 that communicates from the section 23 to the pipe joint mounting screw section 52. Note that a cushion packing 31 is attached to the large diameter portion 22 of the second cushion chamber.

The second cushion air passages 46 and 47 are configured as described above.
A passage 55 is formed by boring a blind hole inside the second support member from the side surface 24b of the flange portion 24.
and a passage 56 which is bored from the second cushion chamber small diameter part 23 and communicates with the passage 55,
A cushion valve 60 is fitted into the passage 56, and the cushion valve is screwed to the second support member 6 with a lock nut 62 via a seal washer 61.

The second cushion air passage 47 is a passage that shares a part of the second air supply/discharge passage 41.
The second air supply/discharge passage 4 is connected from the left side surface 6d of the support member.
1, a second air supply/discharge passage 41, and a shoe formed by drilling from the right side surface 6b of the second support member so as to communicate with the second air supply/discharge passage 41. Shion valve mounting screw part 64
It is made up of.

The cushion valve 65 screwed into the cushion valve mounting screw portion is screwed to the second support member 6 with a lock nut 62 via a seal washer 61.

Next, the connection of the air passages provided in the first support member 5 and the second support member 6 will be explained.

The first air supply/discharge passage 21 is connected to one end of the air supply/discharge pipe 7 via an O-ring 40 attached to the coupling passage 36 , and the other end of the air supply/discharge pipe 7 is attached to the coupling passage 53 . It is connected to a second air supply/discharge passage 41 via an O-ring 40 .

The first cushion air passage 26 is connected to the coupling passage 3.
9 is connected to one end of the cushion exhaust pipe 8 through an O ring 40 attached to the second cushion It is connected to the air passage 47 for communication.

Also, during assembly, as shown in Figure 2, in parallel with the air passage connection work, the cylinder 3 is connected to the second
It is connected to the flange portion 24 of the support member 6 through an O-ring 30 fitted in an annular groove 24a provided in the flange portion 24 of the support member 6.

As shown in FIG. 1, the cylinder 3, air supply/discharge pipe 7, and cushion exhaust pipe 8 connected between the first support member 5 and the second support member 6 are formed on the second support member 6. through the mounting hole 66,
As shown in FIG. A pair of nuts 68 screwed into threaded portions 9a of a pair of protruding tie rods 9
Accordingly, the right side surface 6b of the second support member 6 is tightened and firmly fixed.

Next, the air cylinder 1 configured as above
A second invention in which the following is incorporated into the carriage sliding device 70 will be described. As shown in Figures 6 and 7,
The carriage 72 is slidably mounted on the fixed member 71 via a pair of bearing devices 73 arranged longitudinally of the fixed member 71 .

The air cylinder 1 is stored in an air cylinder storage space 74 formed at the center covered by the carriage 72 and the fixing member 71, and as shown in FIG. Mounting screw part 27
A mounting bolt 96 is screwed into the mounting hole 75 formed in the bottom surface 71a of the fixing member 71.
Air cylinder 1 is fixed to fixing member 71.

As shown in FIGS. 12 to 14, the configuration for fixing the air cylinder 1 to the carriage 72 includes a connecting member formed with stepped portions 77a and 78a that engage the other end 4b of the piston rod 4 with the mounting groove 4c. 77,
78, and the connecting member is screwed through a bolt 76. The screwed connecting members 77 and 78 are fixed to the carriage 72 via bolts 76 from attachment holes 79 drilled through the upper surface 72a of the carriage 72.

As shown in FIG.
A pair of pipe joints 80, 81 are attached to the pipe joint mounting screw portions 51, 52 provided on the right side surface 6b of the support member 6.
A solenoid valve (not shown) is connected to the pair of pipe joints, and as shown in FIG. Air is supplied to the chambers 3a and 3b, and air is discharged from the cylinder chamber.

As shown in FIG. 13, in order to fix the fixing member 71 to a base (not shown), six threaded portions 83 and three positioning grooves 8 are provided that pass through the fixing member.
2 is formed.

As shown in FIG. 12, the upper surface 72 of the carriage 72
Six threaded portions 84 and three positioning grooves 85 are formed in a to attach an object such as a clamp mechanism for an automatic machine using mounting screws (not shown).

As shown in FIGS. 12 and 13, the carriage sliding device 70 is equipped with a stopper device 86 and a position detection device 87.
As shown in FIG. 12, it consists of a pair of abutting members 88, 89 attached to the fixed member 71, and a stopper 90 fixed to the carriage 72 and protruding downward between these abutting members. There is. Further, an elastic member 91 made of rubber or the like is attached to the tips of the abutment members 88 and 89.

As shown in FIG. 13, the position detection device 87 can be fixed at an appropriate position by sliding on a magnet 92 fixed to the carriage 72 and on a guide rail 95 fixed to the front end surface of the fixed member 71. It consists of proximity switches 93 and 94 (for example, with built-in Hall elements).

Effects The present invention is configured as described above, and its effects will be explained below. Air supplied from the air tank to one of the pipe joints 80 by the action of the solenoid valve flows into the pipe joint mounting screw part 51 shown in FIG. The supply pipe 7 flows in the directions of arrows C and D, and the passage 35 flows in the direction of arrow E, and the small diameter portion 1 of the first cushion chamber flows.
8 and flows into the cylinder chamber 3a in the directions of arrows F and G. This air pressure causes the piston 2 to move to the right along with the carriage 72 via the connecting members 77 and 78 shown in FIG.

Further, due to the action of the solenoid valve described above, the solenoid valve is switched so that air is discharged from the solenoid valve to the outside via the other pipe joint 81.
As shown in the figure, the air contained in the cylinder chamber 3b is discharged in the directions of arrows H and I, and the small diameter portion 23 of the second cushion chamber is directed in the direction of arrow J, the passage 54 is directed in the direction of arrow K, and the air is discharged from the pipe joint mounting screw. The portion 52 is discharged in the direction of arrow L.

Note that the air supplied to the pipe joint 80 and the pipe joint 8
The flow rate of air discharged from the reciprocating carriage 72 is adjusted via a throttle valve 97 shown in FIG. 12, and the sliding speed of the carriage 72 can be adjusted by this adjustment.

As shown in FIGS. 15 and 16, the passage of air that is discharged to the outside via the pipe joint mounting threaded portion 52 and the solenoid valve is connected to the cushion piston portion 1.
A change occurs before and after 3 is fitted with the cushion packing 31, and the cushion piston part 13
Compared to the displacement before the cushion packing 31 is fitted, the displacement after the fitting is significantly reduced, and as a result, air action acts on the air cylinder 1.

To explain this action, as shown in FIG. 15, the cushion piston portion 13
When the exhaust gas is away from the cushion packing 31, the exhaust flow path is discharged to the outside through the pipe joint mounting screw portion 52 in the order of arrows A', B', and C'.

However, as shown in FIG. 16, when the cushion piston part 13 is fitted with the cushion packing 31, the exhausted air flows through the passage 55 in the direction of arrow D' and the passage 56 in the direction of arrow E'. The flow flows in the direction of the arrow, flows into the second cushion chamber small diameter portion 23, and flows in the direction of the arrow.
It is discharged to the outside through the pipe joint mounting screw portion 52 as shown in F' and G'.

A cushion valve 60 is disposed in the passage 56, and since the passage is narrowed, the amount of air discharged is regulated, a braking force is applied to the movement of the piston 2, and the cushion function is exerted. Further, by tightening the cushion valve 60, the amount of air discharged can be reduced, and the movement of the piston 2 can be further slowed down to make the cushion sufficiently effective.

In the region of the piston 2 that performs the cushioning function, the air cylinder 1 stops at a position where a stopper 90 fixed to the carriage 72 abuts the abutting member 88, as shown in FIG.

When the piston 2 thus moves to the rightmost position along with the carriage 72 via the connecting members 77 and 78, the proximity switch 93 senses the magnetic force of the magnet 92, and the action of the solenoid valve is switched. The supply of air from the pipe joint 80 is stopped, and the air supply from the pipe joint 80 is stopped.
Air is supplied to 1.

The air supplied to the pipe joint 81 flows through the pipe joint mounting screw portion 52 shown in FIG. Further flowing in the direction of arrow P,
It flows into the cylinder chamber 3b. This air pressure causes the piston 2 to move to the connecting member 7 shown in FIG.
7, 78, and moves to the left along with the carriage 72.

On the other hand, the solenoid valve connected to the pipe joint 80 is in a state of discharging air to the outside, so as shown in FIG. 1, the air contained in the cylinder chamber 3a is discharged in the directions of arrows Q and R. Passing through the small diameter portion 18 of the first cushion chamber, the passage 35 is directed in the direction of arrow S, the air supply/discharge pipe 7 is directed in the direction of arrows T and U, the passage 50 is directed in the direction of arrow V, and the pipe joint mounting screw portion 51 is directed in the direction of arrow W. It flows and is discharged.

When the cushion piston part 12 is fitted with the cushion packing 31, the piston 2 is connected to the passage 37, the air flow path that causes the cushion action.
38 in the direction of arrow X, the cushion exhaust pipe 8
in the direction of arrow Y, the second cushion air passage 47
in the direction of arrow Z and reaches the pipe joint mounting screw part 51. At this time, the air discharge amount is controlled by the cushion valve 65 disposed in the second cushion air passage 47 in the air flow path. is regulated,
A braking force acts on the movement of the piston 2, exerting a cushion function.

At this time as well, the stopper device 86 and position detection device 87 shown in FIGS. 12 and 13 act,
The piston 2 repeatedly reciprocates left and right with the reciprocating table 72.

In addition, in the above embodiment, the air supply/discharge pipe 7
and the cushion exhaust pipe 8 as separate parts.
It was formed into a book, but this is a double pipe (not shown)
By using this, it is possible to combine the tie rods 9 into one pipe, which allows the number of tie rods 9 to be increased from two to three, increasing the torsional strength and making it possible to use an air cylinder device with even higher output. It can be realized.

Effects Since the present invention is configured and operates as described above, an air supply/discharge passage and a cushion air passage are provided inside the support members at both ends of the air cylinder, and the respective passages are used for supplying and discharging air. At the same time, a cylinder, a piston, and a piston rod are installed between the support members at both ends, and the support members at both ends are fixed with tie rods. The throttle valve that adjusts the amount and the cushion valve for the air action can be concentrated on one support member, making it possible to centrally operate various control valves in one place, which has the effect of significantly improving operability. . Further, since there is no need for separate piping outside the air cylinder from the air cylinder main body, the appearance becomes very clean and there is an effect that the air cylinder, which has advanced functions, can be significantly downsized. In addition, as mentioned above, since the excellent air cylinder is used, it is extremely compact, eliminating the need for piping inside the device, and while the device is in operation.
Moreover, it is possible to easily adjust the air supply/exhaust and the air action on one side of the device, and it is possible to provide a carriage sliding device with extremely excellent operability.

[Brief explanation of the drawing]

The drawings relate to embodiments of the present invention, and FIG. 1 is a perspective view showing the internal structure of an air cylinder in a see-through state, and FIG.
The figure is a partial longitudinal sectional view of the air cylinder, and Figure 3 is the second
4 is a left side view of what is shown in FIG. 2, FIG. 5 is a bottom view of the first support member, FIG. 6 is a front view of the carriage sliding device, and FIG. is a right side view of what is shown in FIG. 6, FIG. 8 is a right side view of what is shown in FIG. 6, FIG. 9 is a plan view of what is shown in FIG. 6, and FIG. 10 is a bottom view of what is shown in FIG. , FIG. 11 is a longitudinal sectional view taken along arrows XI-XI in FIG. 6, and FIG. 12 is a perspective view of the carriage sliding device seen from above.
Fig. 13 is a perspective view similarly seen from below, Fig. 14 is an exploded perspective view showing the members used to connect the piston rod to the carriage, and Fig. 15 is a longitudinal section of the main part showing the normal exhaust state of the air cylinder. 16 is a vertical cross-sectional view of the main part showing the exhaust state when the air cushion is activated, and FIG. 17 is an enlarged cross-sectional view of the main part of the air passage for the second cushion. 1 is an air cylinder, 2 is a piston, 3 is a cylinder, 3a, 3b are cylinder chambers, 4 is a piston rod, 5, 6 are a pair of support members, 7 is an air supply/discharge pipe, 8 is a cushion exhaust pipe, 9 is a tie rod , 11 is a piston packing, 12 and 13 are cushion piston parts, 16 and 24 are flange parts, 21 is a first air supply/discharge passage, 26 is a first cushion air passage, 41 is a second air supply/discharge passage, 4
6, 47 are air passages for the second cushion; 60, 6;
5 is a cushion valve, 70 is a reciprocating table sliding device,
71 is a fixed member, 72 is a reciprocating table, 73 is a bearing device, 77 and 78 are connecting members, 96 is a mounting bolt,
97 is a throttle valve.

Claims (1)

[Scope of Claims] 1. A piston 2 having cushion piston portions 12 and 13 formed on both left and right sides, and a cylinder 3 into which the piston is slidably and airtightly fitted through a piston packing 11. , a piston rod 4 that is fixed to the piston 2 and has one end 4b protruding outside the cylinder, a flange portion 16 that fits with one end of the cylinder 3, and one cushion portion 12 of the piston 2 fit together. one cylinder chamber 3 of said cylinder 3 so as to be hermetically sealed;
a first cushion chamber small diameter section 18 that communicates with the first cushion chamber small diameter section a, a first air supply/discharge passage 21 that communicates with the first cushion chamber small diameter section, and a first cushion chamber small diameter section 18 that communicates with the one cylinder chamber 3a. No. 1
The first support member 5 in which the cushion air passage 26 is formed, the flange portion 24 that fits with the other end of the cylinder 3, and the other cushion piston portion 13 of the piston 2 fit together. A second cushion chamber small diameter portion 23 that communicates with the other cylinder chamber 3b of the cylinder 3 in a sealed manner, a second air supply/discharge passage 41 that communicates with the second cushion chamber small diameter portion, and the other cylinder of the cylinder 3. Room 3
b, a second cushion air passage 46 consisting of passages 55 and 56 that communicate independently of the second cushion chamber small diameter portion 23 and partially communicate with the second cushion chamber small diameter portion; and the first support. a second support member 6 formed with a second cushion air passage 47 communicating with the first cushion air passage 26 of the member 5 and communicating with the first air supply/discharge passage 21;
, an air supply and discharge pipe 7 that communicates and connects the air supply and discharge passages 21 and 41 disposed inside the pair of support members 5 and 6, and the pair of support members 5,
A cushion exhaust pipe 8 that communicates and connects the cushion air passages 26 and 47 disposed inside the cushion 6, and a cushion exhaust pipe 8 that connects the cushion air passages 26 and 47 disposed inside the cushion 6, and the piston 2, the cylinder 3, the piston rod 4, A tie rod 9 is provided for fixing the pair of support members 5 and 6 with the air supply/discharge pipe 7 and the cushion exhaust pipe 8 attached, and is supplied to the cylinder chamber 3a of the cylinder 3. A throttle valve 77 for adjusting the amount of air discharged from the air and cushion valves 60 and 65 for air action are arranged in a concentrated manner on one of the support members 6, and the speed of reciprocating sliding is adjusted in the one support member 6. An air cylinder characterized in that the air cylinder is configured to be adjustable and the air action can be adjusted. 2. A piston 2 in which cushion piston parts 12 and 13 are formed on both left and right sides, a cylinder 3 into which the piston is slidably inserted in an airtight manner via a piston packing 11, and fixed to the piston 2. A piston rod 4 whose one end 4b projects outside the cylinder, a flange portion 16 that fits with one end of the cylinder 3, and one cushion portion 12 of the piston 2 are fitted to form a seal. one cylinder chamber 3 of the cylinder 3
a first cushion chamber small diameter section 18 that communicates with the first cushion chamber small diameter section a, a first air supply/discharge passage 21 that communicates with the first cushion chamber small diameter section, and a first cushion chamber small diameter section 18 that communicates with the one cylinder chamber 3a. No. 1
The first support member 5 in which the cushion air passage 26 is formed, the flange portion 24 that fits with the other end of the cylinder 3, and the other cushion piston portion 13 of the piston 2 fit together. A second cushion chamber small diameter portion 23 that communicates with the other cylinder chamber 3b of the cylinder 3 in a sealed manner, a second air supply/discharge passage 41 that communicates with the second cushion chamber small diameter portion, and the other cylinder of the cylinder 3. Room 3
b, a second cushion air passage 46 consisting of passages 55 and 56 that communicate independently of the second cushion chamber small diameter portion 23 and partially communicate with the second cushion chamber small diameter portion; and the first support. a second support member 6 formed with a second cushion air passage 47 communicating with the first cushion air passage 26 of the member 5 and communicating with the first air supply/discharge passage 21;
, an air supply and discharge pipe 7 that communicates and connects the air supply and discharge passages 21 and 41 disposed inside the pair of support members 5 and 6, and the pair of support members 5,
A cushion exhaust pipe 8 that communicates and connects the cushion air passages 26 and 47 disposed inside the cushion 6, and a cushion exhaust pipe 8 that connects the cushion air passages 26 and 47 disposed inside the cushion 6, and the piston 2, the cylinder 3, the piston rod 4, A tie rod 9 is provided for fixing the pair of support members 5 and 6 with the air supply/discharge pipe 7 and the cushion exhaust pipe 8 attached, and is supplied to the cylinder chamber 3a of the cylinder 3. An air cylinder 1 is provided in which a throttle valve 77 for adjusting the amount of air discharged from the air cylinder and cushion valves 60 and 65 for air action are arranged centrally on one of the support members 6, and the support member 6 of the air cylinder A fixed member 71 to which the members 5 and 6 are fixed, a reciprocating carriage 72 to which one end 4b of the piston rod 4 is fixed, and a bearing device 73 that allows the reciprocating carriage to slidably move on the fixed member 71. and the throttle valves 60 and 65 that adjust the amount of air supplied to and discharged from the air cylinder 1.
A carriage sliding device characterized in that it is configured such that the operation can be performed on one side of the device.