CN209755255U - Finger cylinder - Google Patents

Abstract

The utility model provides a finger cylinder relates to automatic execution device technical field. The finger cylinder comprises a cylinder barrel and a pin shaft penetrating through the cylinder barrel, a clamp spring groove is formed in the end portion of the pin shaft, a split retainer ring used for stopping the pin shaft to move relative to the cylinder barrel is arranged on the clamp spring groove in a clamped mode, a set screw used for stopping the pin shaft to rotate is connected to the cylinder barrel and comprises a first screw and a second screw, the first screw abuts against and presses the side face of the pin shaft, and the second screw abuts against and presses the first screw. The utility model has the advantages of firm connection and convenient installation.

Description

Finger cylinder

Technical Field

The utility model relates to an automatic change the final controlling element field, especially relate to a finger cylinder.

Background

The finger cylinder utilizes piston and piston rod to drive the cylinder clamping jaw to rotate and realize pressing from both sides tightly and unclamping according to the up-and-down reciprocating motion of piston and piston rod, runs through cylinder and clamping jaw through the round pin axle among the current finger cylinder product, then passes through holding screw with round pin axle and cylinder fixed connection, can realize pressing from both sides tightly and unclamping when the relative round pin axle of clamping jaw rotates. In a severe working environment, a set screw used for fixing the pin shaft is easy to loosen, and once the pin shaft is separated from the position, the air cylinder and a workpiece needing to be clamped are affected.

Disclosure of Invention

The utility model discloses to foretell technical problem, provide a finger cylinder, have the advantage of connecting firm, the installation of being convenient for.

In order to achieve the above object, the utility model discloses a technical scheme be:

The finger cylinder comprises a cylinder barrel and a pin shaft penetrating through the cylinder barrel, wherein a clamp spring groove is formed in the end portion of the pin shaft, an open retainer ring used for stopping the pin shaft to move relative to the cylinder barrel is arranged on the clamp spring groove in a clamped mode, a set screw used for stopping the pin shaft to rotate is connected to the cylinder barrel and comprises a first screw and a second screw, the first screw abuts against and presses the side face of the pin shaft, and the second screw abuts against and presses the first screw.

Preferably, a plane parallel to the axis of the pin shaft is arranged on the circumference of the pin shaft, and the set screw abuts against the plane.

Preferably, the cylinder barrel is provided with a through hole matched with the pin shaft, one end, far away from the clamp spring groove, of the pin shaft is provided with a head, and the outer diameter of the head is larger than the diameter of the through hole.

Preferably, the length of the pin shaft is not greater than that of the cylinder barrel along the axial direction of the pin shaft, a counter bore used for accommodating the head of the pin shaft is arranged on one side of the cylinder barrel, and a groove used for accommodating the split retainer ring is arranged on the other side of the cylinder barrel.

Preferably, the groove is a U-shaped groove.

Preferably, the end of the pin shaft is provided with an indication surface capable of indicating the plane direction, and the indication surface is parallel to the plane and is located on the same side of the pin shaft.

Preferably, the number of the planes is two, and the two planes are distributed at two ends of the pin shaft.

Compared with the prior art, the utility model discloses an advantage lies in with positive effect:

1. The finger cylinder is provided with the clamp spring groove on the pin shaft, the split retainer ring is clamped into the clamp spring groove to connect the pin shaft with the cylinder barrel, the split retainer ring is clamped without loosening, the stability of the pin shaft is effectively improved when the finger cylinder is in severe work for a long time, and the finger cylinder has the advantages of firm connection and stable work; the cylinder barrel is connected with a set screw perpendicular to the length direction of the pin shaft, and the pin shaft is pressed by the set screw, so that the rotation of the pin shaft can be effectively stopped, and the stability of the pin shaft during the working of the cylinder is further improved; the pin shaft, the cylinder barrel and the clamping jaw are detachably connected, so that a workpiece which is abraded due to long-time work can be conveniently replaced at a later stage, and the service life of the finger cylinder is prolonged; through setting up first screw and second screw, support by first screw and press the round pin axle, the second screw supports and presses first screw, has not only increased the stability of round pin axle when the cylinder is worked, has also reduced because of the cylinder violent work, the possibility that holding screw drops and splits.

2. This finger cylinder is through setting up the surface of the both ends of round pin axle do not bulge the cylinder, sets up counter bore and the recess that holds round pin axle both ends in the both sides of cylinder for the round pin axle can not bulge in the surface of cylinder, compares in prior art round pin axle head portion protrusion influence cylinder fixed mounting's problem, the utility model discloses the fixed convenience of cylinder installation has been increased.

3. This finger cylinder is through setting up the instruction face at the head of round pin axle, and instruction face and plane are located the same direction of round pin axle, and the position behind the cylinder is packed into to the plane of knowing that can know through the instruction face to make things convenient for follow-up holding screw to support the installation that presses the plane, have the convenient advantage of assembly.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

fig. 1 is an exploded view of a finger cylinder provided by the present invention;

Fig. 2 is a perspective view of the finger cylinder provided by the present invention;

Fig. 3 is an exploded view of the finger cylinder at another viewing angle provided by the present invention;

Fig. 4 is a perspective view of the pin shaft in the finger cylinder provided by the utility model.

In the above figures: 1. a cylinder barrel; 11. a through hole; 12. a groove; 13. a counter bore; 14. a threaded hole; 15. Mounting holes; 2. a pin shaft; 21. a clamp spring groove; 22. a plane; 23. a head portion; 24. an indicating surface; 3. opening a check ring; 4. tightening the screw; 41. a first screw; 42. a second screw; 5. a clamping jaw.

Detailed Description

The present invention is specifically described below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the prior art, a pin shaft in a finger cylinder is fixedly connected with a cylinder barrel through a set screw, and the connection mode is easy to cause screw looseness in the environment with long-term use or severe vibration of the working environment, so that the pin shaft is separated from the cylinder barrel. In order to solve the technical problem, the technical scheme of the invention is as follows: set up the jump ring groove at the tip of round pin axle, go into the jump ring groove through split ring card and be connected round pin axle and cylinder, split ring is difficult to drop and can guarantee the reliable connection of round pin axle and cylinder, two holding screws of screw in order from the threaded hole of cylinder side, supports the side of round pin axle with holding screw, can prevent the rotation of round pin axle, further increases the stability of round pin axle.

For better understanding of the above technical solutions, the following detailed descriptions are provided with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1-3, a finger cylinder comprises a cylinder barrel 1, a pin shaft 2 and a split washer 3, wherein the cylinder barrel 1 is provided with a through hole 11, the diameter of the through hole 11 is matched with the outer diameter of the pin shaft 2, the pin shaft 2 penetrates through the through hole 11 of the cylinder barrel 1, the end part of the pin shaft 2 is provided with a clamp spring groove 21, and the split washer 3 is clamped into the clamp spring groove 21, so that the pin shaft 2 is ensured not to be separated from the cylinder barrel 1, the split washer 3 has no problem of looseness, and is not easy to fall off; at the side of cylinder 1, perpendicular to 2 length direction setscrew holes 14 on the round pin axle, screw holes 14 and through-hole 11 intercommunication, follow screw holes 14 screw in with holding screw 4, holding screw 4 supports the side of pressing round pin axle 2, can backstop round pin axle 2's rotation for round pin axle 2 connects more firmly.

According to the finger cylinder, the clamp spring groove 21 is formed in the pin shaft 2, the split retainer ring 3 is clamped into the clamp spring groove 21 to connect the pin shaft 2 with the cylinder barrel 1, the split retainer ring 3 is clamped without loosening, the stability of the pin shaft 2 during long-time severe work of the finger cylinder is effectively improved, and the finger cylinder has the advantages of being firm in connection and stable in work; the cylinder barrel 1 is connected with a set screw 5 perpendicular to the length direction of the pin shaft 2, the pin shaft 2 is pressed through the set screw 5, and the pin shaft 2 can be effectively stopped from rotating, so that the stability of the pin shaft 2 during the working of the cylinder is further improved.

The set screw 4 comprises a first screw 41 and a second screw 42, the first screw 41 and the second screw 42 are sequentially screwed into the same threaded hole 14, so that the first screw 41 tightly presses against the pin shaft 2, and the second screw 42 presses against the first screw 41.

According to the finger cylinder, the first screw 41 is used for abutting against the pin shaft 2 through the first screw 41 and the second screw 42 is used for abutting against the first screw 41, so that the stability of the pin shaft 2 during the operation of the cylinder is improved, and the possibility that the set screw 4 falls off and is broken due to the violent operation of the cylinder is reduced.

Specifically, a cavity for accommodating the clamping jaw 5 is arranged on the cylinder barrel 1, the clamping jaw 5 is installed in the cavity of the cylinder barrel 1, and a through hole is formed in the clamping jaw 5; one end of the pin shaft 2 is provided with a head part 23, the head part 23 and the clamp spring groove 21 are respectively positioned at two ends of the pin shaft 2, the outer diameter of the head part 23 is larger than the diameter of the through hole 11, the pin shaft 2 penetrates through the through hole 11 of the cylinder barrel 1 and the through hole of the clamping jaw 5, and then the split washer 3 is clamped in the clamp spring groove 21, so that the clamping jaw 5 and the cylinder barrel 1 are connected.

Specifically, as shown in fig. 1 and 4, a plane 22 is cut on the circumferential surface of the pin shaft 2, the plane 22 is parallel to the axis of the pin shaft 1, and the set screw 4 is screwed into the threaded hole 14 and then abuts against the plane 22 of the pin shaft 2.

Specifically, the number of the planes 22 is two, the two planes 22 are respectively located at two ends of the pin shaft 2, correspondingly, the cylinder barrel 1 is provided with two threaded holes 14, and the set screws 4 respectively enter the fastening pin shaft 2 from the two threaded holes 14.

Among the prior art, the both ends of round pin axle 2 or one end protrusion in the surface of cylinder 1, the user often can cause the fixed inconvenience of installation because protrusion in the round pin axle 2 of cylinder 1 when the fixed cylinder of installation to be in an unstable state as for the cylinder during operation, thereby influence the working effect of cylinder. The utility model discloses to this problem, provide further design: in the axial direction of the pin shaft 2, the length of the pin shaft 2 is not greater than that of the cylinder barrel 1, in order to accommodate a head 23 of the pin shaft 2, a counter bore 13 (shown in fig. 3) is formed in the side surface of the cylinder barrel 1, the counter bore 13 is coaxial with the through hole 11, and the counter bore 13 accommodates the head 23 of the pin shaft 2, so that the pin shaft 2 does not protrude out of the outer surface of the cylinder barrel 1; on the other side with respect to the counterbore 13, a recess 12 is provided in the cylinder barrel 1 for receiving the split washer 3 and the other end of the pin 2.

This finger cylinder sets up the counter bore 13 and the recess 12 that hold round pin axle 2 both ends in the both sides of cylinder 1 for round pin axle 2 can not protrusion in the surface of cylinder 1, compare in prior art round pin axle 2 tip protrusions influence the problem of 1 fixed mounting of cylinder, the utility model discloses the convenience of cylinder installation fixing has been increased.

specifically, as shown in fig. 1, the side surface of the cylinder barrel 1 is provided with a mounting hole 15, which facilitates the fixed mounting of the finger cylinder.

Specifically, in order to facilitate the installation of the split retainer ring 3, the finger cylinder preferably sets the groove 12 to be a U-shaped groove, and the split retainer ring 3 is inserted from one side of the opening of the U-shaped groove and then clamped into the clamp spring groove 12.

Further, after the pin shaft 2 penetrates through the through hole 11 of the cylinder barrel 1, the position of the plane 22 does not necessarily face the direction of the threaded hole 14, and in order to solve the problem, the utility model discloses set up the indicating surface 24 at the head of the pin shaft 2, the indicating surface 24 is parallel with the plane 22 and is located the same side of the pin shaft 2; when the pin shaft 2 is installed, the position of the plane 22 can be known by observing the position of the indicating surface 24 on the pin shaft 2, so that the correct installation of the pin shaft 2 can be ensured.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (7)

1. A finger cylinder, its characterized in that: the clamping spring device comprises a cylinder barrel and a pin shaft penetrating through the cylinder barrel, wherein a clamping spring groove is formed in the end portion of the pin shaft, a split washer used for stopping the pin shaft to move relative to the cylinder barrel is clamped in the clamping spring groove, a set screw used for stopping the pin shaft to rotate is connected to the cylinder barrel, the set screw comprises a first screw and a second screw, the first screw abuts against and presses the side face of the pin shaft, and the second screw abuts against and presses the first screw.

2. the finger cylinder of claim 1, wherein: and a plane parallel to the axis of the pin shaft is arranged on the circumference of the pin shaft, and the fastening screw abuts against the plane.

3. The finger cylinder of claim 1, wherein: the cylinder barrel is provided with a through hole matched with the pin shaft, one end of the pin shaft, which is far away from the clamp spring groove, is provided with a head, and the outer diameter of the head is larger than the diameter of the through hole.

4. The finger cylinder of claim 3, wherein: the length of the pin shaft is not larger than that of the cylinder barrel along the axial direction of the pin shaft, a counter bore used for containing the head of the pin shaft is arranged on one side of the cylinder barrel, and a groove used for containing the split retainer ring is arranged on the other side of the cylinder barrel.

5. The finger cylinder of claim 4, wherein: the groove is a U-shaped groove.

6. The finger cylinder of claim 2, wherein: the end part of the pin shaft is provided with an indicating surface capable of indicating the plane direction, and the indicating surface is parallel to the plane and is positioned on the same side of the pin shaft.

7. The finger cylinder of claim 2, wherein: the number of the planes is two, and the two planes are distributed at two ends of the pin shaft.