CN213674184U

CN213674184U - Quick replacing device for butt joint parts

Info

Publication number: CN213674184U
Application number: CN202022349941.XU
Authority: CN
Inventors: 鲁静; 刘涛; 孙中维; 龚小平; 谭彦; 黄洋; 杨宝军; 庹奎; 任君坪
Original assignee: Chongqing Huashu Robot Co ltd; Chongqing Yanfeng Johnson Controls Automotive Components Co Ltd
Current assignee: Chongqing Huashu Robot Co Ltd; Chongqing Adient Automotive Components Co Ltd
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2021-07-13
Anticipated expiration: 2030-10-20

Abstract

The utility model discloses a quick-change device for butt-joint parts, which comprises a quick-change connector and a locking shaft, wherein the quick-change connector comprises a shell, at least one inner conical sleeve is arranged in the shell, one end of the shell is fixedly provided with a cylinder for driving the inner conical sleeve to slide along the axial direction of the shell, the other end of the shell is provided with a lower end plate, the inner conical sleeve is provided with a conical cavity with an opening just facing the lower end plate, the lower end plate is provided with a cylindrical part extending just facing the conical cavity, and the outer diameter of the cylindrical part is smaller than the maximum inner; the lateral wall of tube-shape portion has two at least symmetric distribution's bell mouth on, and the both ends of tube-shape portion are uncovered, and the bell mouth internalization disposes the steel ball, and the one end of locking axle has the back taper head, and it can stretch into in the tube-shape portion to realize pressing from both sides tight locking under the cooperation of bell mouth and steel ball. The connecting structure has the advantages of compact overall structure, small volume, light weight, particular suitability for the use environment with small space, contribution to avoiding the interference between the connecting structure and a tool, good reliability and stability, convenience in mounting and dismounting and the like.

Description

Quick replacing device for butt joint parts

Technical Field

The utility model relates to a connection structure technical field, concretely relates to quick change device of butt joint piece.

Background

With the rapid development of industrial automation, industrial robots are widely popularized in production and manufacturing enterprises, corresponding tools can be installed at the operation tail ends of the robots, and the processing of different procedures of products is realized through the tools. However, in the production process, the different machining processes or the sizes of the products usually cause the different types or specifications of the tools, the tools are often required to be replaced in the installation or production process, for example, the traditional one-to-one connection structure is used, the installation or replacement time is inevitably greatly increased, and the normal production efficiency is affected, the existing structures capable of assisting quick clamping mostly have the problems of large size and poor stability and reliability, so that a structure which meets the requirement that different tools are quickly matched with the same operation end clamping structure is urgently needed to improve the assembly or replacement efficiency, and the clamping stability and reliability can be ensured.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a to joint spare quick change device mainly accomplishes the sewing through the robot, improves production efficiency, guarantees cut-parts sewing quality simultaneously, improves the finished product quality.

In order to achieve the above purpose, the utility model discloses technical scheme as follows:

the utility model provides a quick change device of interfacing part which the key lies in: the quick-change connector comprises a quick-change connector and a locking shaft matched with the quick-change connector, wherein the quick-change connector comprises a shell, at least one inner conical sleeve is arranged in the shell, one end of the shell is fixedly provided with a cylinder used for driving the inner conical sleeve to slide along the axial direction of the shell, the other end of the shell is provided with a lower end plate, the inner conical sleeve is provided with a conical cavity with an opening facing the lower end plate, and a cylindrical part extending facing the conical cavity is arranged on the lower end plate;

the lateral wall of tube-shape portion has two at least evenly distributed's bell mouth, and the hole of tube-shape portion runs through to lower terminal plate terminal surface, and the bell mouth activity is provided with the steel ball, the tip of locking axle is the back taper structure, and it can stretch into the conical cavity by tube-shape portion to contact with the steel ball, when the taper sleeve slided along the casing, can change the degree of depth that the steel ball imbed the bell mouth.

By adopting the scheme, the quick-change connector and the locking shaft are respectively arranged on a tool and a driving part which need to be butted, if the quick-change connector is arranged at the operation tail end of a robot, the locking shaft is arranged on a process implementation tool, during connection, the locking shaft only needs to be just inserted into the cylindrical part, the cylinder works to push the inner conical sleeve to move towards one side where the tool is located, meanwhile, the steel ball is matched with the outer conical surface at the end part of the locking shaft through the conical hole to clamp and lock the locking shaft, the cylinder resets to drive the inner conical sleeve to move reversely during unlocking, a yielding space is provided for the outer side of the steel ball, the steel ball can move outwards, the locking shaft can withdraw from the cylindrical part at the moment, the locking is reliable, the unlocking is quick, and the tool replacing device is particularly suitable for occasions.

Preferably, the method comprises the following steps: and a spring is arranged between the piston of the cylinder and the end cover. Scheme more than adopting, the spring mainly plays the effect of disconnected gas protection, prevents under locking state, and disconnected gas suddenly leads to the piston not hard up, and then makes interior tapered sleeve remove, and the condition of locking inefficacy takes place, after the installation spring, also can continuously provide pressure to the piston even after disconnected gas, realizes continuously locking, can not cause the instrument to drop.

Preferably, the method comprises the following steps: and spring mounting grooves and annular bosses are respectively arranged at positions, which are opposite to the springs, on the piston and the end cover. By adopting the scheme, the working stability and reliability of the spring can be guaranteed, the spring can be prevented from being twisted or bent, and the service life of the spring can be prolonged.

Preferably, the method comprises the following steps: the end part of the locking shaft is provided with an extension section which is outward along the axial direction of the locking shaft, and the top of the conical cavity is provided with a positioning pin sleeve which is matched with the extension section. Scheme more than adopting, during locking, the locking axle stretches into wherein from tube-shape portion lower extreme, and its tip extension section then stretches into the locating pin cover, realizes the preliminary location of locking axle, prevents to rock, and the cylinder is controlled again and the interior taper sleeve of removal is locked, is favorable to guaranteeing the uniformity of locking gesture, prevents that centre gripping locking in-process locking axle from taking place the incline.

Preferably, the method comprises the following steps: the tapered hole is conical, and the cylindrical part is provided with four symmetrically arranged tapered holes. By adopting the scheme, the conical taper holes can better adapt to the steel balls, the steel balls are ensured to move smoothly, and meanwhile, the steel balls in the four symmetrically distributed taper holes can provide larger and more stable clamping supporting force.

Preferably, the method comprises the following steps: the inner tapered sleeves are two and offset about the axis of the housing. By adopting the scheme, the phenomenon of reverse connection is prevented, and the installation efficiency is improved.

Preferably, the method comprises the following steps: the casing is internally provided with a mounting hole for mounting the inner conical sleeve, the end part of the casing is provided with a mounting groove communicated with the mounting hole, the mounting groove is internally provided with an intermediate connecting plate in sliding fit with the mounting groove, and the piston of the cylinder is fixedly connected with the intermediate connecting plate. The synchronous movement of the two inner conical sleeves can be realized through the middle connecting plate, and the consistency and the stability of the locking position can be favorably ensured.

Compared with the prior art, the beneficial effects of the utility model are that:

adopt the utility model provides a quick change device of butt joint piece, overall structure is compact, and small quality is light, and the little service environment in specially adapted space is favorable to avoiding the interference between connection structure and the instrument, has good reliability and stability simultaneously, and convenient to install and dismantle etc..

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a lock shaft structure;

FIG. 3 is a schematic view of a lower end plate structure;

FIG. 4 is a schematic view of the inner taper sleeve structure;

FIG. 5 is a cross-sectional view of FIG. 4;

FIG. 6 is a schematic view of the housing structure;

FIG. 7 is a schematic view of the relative positions of two inner tapered sleeves in this embodiment;

fig. 8 is a schematic view of the usage state of the present invention.

Detailed Description

The present invention will be further described with reference to the following examples and accompanying drawings.

Referring first to fig. 1 to 8, the quick-change device for an abutting member mainly comprises a quick-change connector 21 and a locking shaft 22 matching with the quick-change connector 21, wherein the quick-change connector 21 mainly comprises a housing 21a and a cylinder 21b which are coaxially arranged, the housing 21a is fixedly connected with a cylinder body of the cylinder 21b through screws, as shown in fig. 1 and 6, at least one inner conical sleeve 210 is arranged in the housing 21a, a mounting hole 21a1 corresponding to the inner conical sleeve 210 is formed in the housing 21a, the inner conical sleeve 210 is in sliding fit with a corresponding mounting hole 21a1 and can axially slide in the mounting hole 21a1, the upper end of the inner conical sleeve 210 is fixedly connected with a piston 213 of the cylinder 21b through an intermediate connecting plate 216, the intermediate connecting plate 216 is fixedly connected with the piston 213 through screws, the housing 21a is provided with a mounting grooves 21a0 corresponding to the cross section of the intermediate connecting plate 216, the depth of the mounting grooves 21a0 is greater, the difference is the moving range of the intermediate connecting plate 216, when the cylinder 21b works, the piston 213 moves to drive the inner tapered sleeve 210 to move up and down through the intermediate connecting plate 216, in this embodiment, to ensure the moving stability of the inner tapered sleeve 210, the mounting groove 21a0 is disposed in a kidney shape, so that after the intermediate connecting plate 216 is installed therein, the mounting groove can only move along the groove depth direction thereof, and the relative rotation cannot occur.

The inner conical sleeve 210 has a conical cavity 2100 with a downward opening (with reference to the direction shown in fig. 1, the opening faces away from the cylinder 21b), the conical cavity 2100 has a conical shape with a large lower end and a small upper end, the lower end of the housing 21a is detachably provided with a lower end plate 211, the lower end plate 211 has a cylindrical portion 2110 extending over the conical cavity 2100, the cylindrical portion 2110 has a substantially cylindrical shape with an open upper end, the circumferential side wall of the cylindrical part is provided with at least two conical holes 2111, the conical holes 2111 are uniformly distributed along the circumferential direction of the cylindrical part 2110, and penetrates through the side wall, the outside of each tapered hole 2111 is large and the inside is small, each tapered hole 2111 is internally provided with a steel ball 212, in the movable range of the middle connecting plate 216, the steel ball 212 is always positioned at the inner side of the conical cavity 2100, and at least partially contacts the sidewalls of the tapered cavity 2100, as the inner tapered sleeve 210 moves downward, the compressible steel bead 212 moves toward the inside of the tapered hole 2111 so that a part thereof protrudes to the inside of the cylindrical portion 2110.

The lower end plate 211 is provided with a through hole corresponding to the cylindrical portion 2110 so that the upper end and the lower end of the cylindrical portion 2110 are actually in an open state, the outer diameter of the locking shaft 22 is slightly smaller than the inner diameter of the cylindrical portion 2110, the upper end of the locking shaft 22 is provided with a tapered head with a large upper end and a small lower end and forms a downward outer tapered surface 220, when in butt joint, the locking shaft 22 can extend into the cylindrical portion 2110 through the through hole, then the inner tapered sleeve 210 is controlled to move downwards through the air cylinder 21b, the steel ball 212 is squeezed to move inwards to abut against the outer tapered surface 220, and thus the locking and fixing of the locking shaft.

In addition, in order to further improve the docking stability and the consistency of postures, the upper end of the locking shaft 22 is further provided with an extension section 221, a positioning pin sleeve 217 is fixedly installed above the tapered cavity 2100 in the inner tapered sleeve 210, and after the locking shaft 22 extends into the cylindrical part 2110, the upper end extension section 2201 of the locking shaft just extends into the positioning pin sleeve 217, so that the locking shaft 22 is initially positioned, the locking efficiency is improved, the clamping is ensured, the locking shaft 22 is in a vertical posture, and the deflection is prevented.

In order to prevent the locking shaft 22 from being rapidly separated from the joint 21 after the cylinder 21b stops working, which may cause the tool to fall off and further affect the normal production, in this embodiment, a spring 215 is disposed between the piston 213 and the end cover 214, as shown in fig. 1, the spring 215 is axially disposed along the cylinder 21b, the upper end and the lower end of the spring 215 are respectively fixed on the piston 213 and the end cover 214 and are in a pre-tightening state, a spring mounting groove 2130 and an annular boss 2140 are respectively disposed on the piston 213 and the end cover 214 at positions facing the spring 215, after the installation is completed, the lower end of the spring 215 is embedded into the spring mounting groove 2130, and the upper end of the spring is sleeved on the annular boss 2140, which may greatly improve.

On the basis, in this embodiment, it is preferable that the air cylinder 21b is a double-acting air cylinder, and has an upper air inlet port 21b0 and a lower air inlet port 21b1 that are respectively communicated with the upper chamber and the lower chamber, and high-pressure air is filled into different chambers through different air inlet ports, so that the piston 213 can be controlled to move in different directions to unlock and lock the locking shaft 22, as shown in the figure, that is, when the upper air inlet port 21b0 is inflated, the piston 213 moves downward, that is, the locking shaft 22 can be locked by the inner tapered sleeve 210 and the steel balls 212, at this time, the spring 215 mainly plays a role of air-break protection, and when the lower air inlet port 21b1 is inflated, the piston 213 moves upward against the spring 215, and the steel balls 212 move outward, that is, the locking shaft 22 can be unlocked, and the.

It should be noted that, in the quick-change coupler 21 of this embodiment, two inner tapered sleeves 210 are preferably provided, and when the quick-change coupler is used, two locking shafts 22 are mounted on the tool, and the two locking shafts 22 are fixed on the tool through flanges, and a double-head positioning and locking structure is adopted, so that the whole body is more compact, and the locking effect and reliability are improved.

Referring to the quick-change device for the docking member shown in fig. 1 to 8, in the present embodiment, the quick-change coupler 21 is mounted at the end of the robot, the tool to be docked is a pressure plate 23, two locking shafts 22 are flanged onto the pressure plate 23, when in butt joint, the locking shaft 22 is inserted into the cylindrical part 2110 in a facing manner, the extending section 221 is ensured to be inserted into the positioning pin sleeve 217, the external conical surface 220 is positioned above the conical hole 220, the internal conical sleeve 210 is driven by the air cylinder 21b to move in a facing manner to the pressure plate 23, the steel ball 212 is extruded to move inwards by the internal conical surface of the pursuit 2100, part of which protrudes into the cylindrical portion 2110 through the tapered hole 2111 and abuts against the outer tapered surface 220, thereby locking the locking shaft 22, that is, the pressure plate 23 is abutted against the quick-change coupler 21, and when the pressure plate 23 needs to be replaced, only the lower air inlet port 21b1 needs to be inflated to move the piston 213 upwards in the opposite direction, the steel balls can roll outwards, and the locking shaft 22 can be withdrawn from the cylindrical portion 2110 at this time.

Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and the scope of the present invention.

Claims

1. The utility model provides a quick change device of interfacing part which characterized in that: the quick-change coupler comprises a quick-change coupler (21) and a locking shaft (22) matched with the quick-change coupler (21), wherein the quick-change coupler (21) comprises a shell (21a), at least one inner conical sleeve (210) is arranged in the shell (21a), one end of the shell (21a) is fixedly provided with a cylinder (21b) used for driving the inner conical sleeve (210) to slide along the axial direction of the shell (21a), the other end of the shell is provided with a lower end plate (211), the inner conical sleeve (210) is provided with a conical cavity (2100) with an opening facing the lower end plate (211), and the lower end plate (211) is provided with a cylindrical part (2110) extending facing the conical cavity (2100);

the side wall of the cylindrical part (2110) is provided with at least two tapered holes (2111) which are uniformly distributed, the inner hole of the cylindrical part (2110) penetrates through the end face of the lower end plate (211), steel balls (212) are movably arranged in the tapered holes (2111), the end part of the locking shaft (22) is of a reverse conical surface structure, the locking shaft can extend into the tapered cavity (2100) from the cylindrical part (2110) and is in contact with the steel balls (212), and when the tapered sleeve (210) slides along the shell (21a), the depth of the steel balls (212) embedded into the tapered holes (2111) can be changed.

2. A quick-change device for a docking member according to claim 1, wherein: a spring (215) is arranged between the piston (213) of the cylinder (21b) and the end cover (214).

3. A quick-change device for a docking member according to claim 2, wherein: and spring mounting grooves (2130) and annular bosses (2140) are respectively arranged at positions, which are opposite to the springs (215), on the piston (213) and the end cover (214).

4. A quick-change device for a docking member according to claim 1, wherein: the end of the locking shaft (22) is provided with an extension (221) axially outward along the end, and the top of the conical cavity (2100) is provided with a positioning pin sleeve (217) matched with the extension (221).

5. A quick-change device for a docking member according to claim 1, wherein: the tapered hole (2111) is conical, and the cylindrical portion (2110) has four symmetrically disposed tapered holes (2111).

6. A quick-change device for a docking member according to claim 1 or 5, characterized in that: the inner tapered sleeves (210) are two, and the two inner tapered sleeves (210) are offset with respect to the axis of the housing (21 a).

7. A quick-change device for a docking member according to claim 6, wherein: the shell (21a) is internally provided with a mounting hole (21a1) for mounting the inner conical sleeve (210), the end part of the shell (21a) is provided with a mounting groove (21a0) communicated with the mounting hole (21a1), the mounting groove (21a0) is internally provided with an intermediate connecting plate (216) in sliding fit with the mounting groove, and a piston (213) of the cylinder (21b) is fixedly connected with the intermediate connecting plate (216).