CN216250398U

CN216250398U - Clamping mechanism

Info

Publication number: CN216250398U
Application number: CN202122614480.9U
Authority: CN
Inventors: 黄凯; 李哲淳; 王朝伟; 晏凉亭
Original assignee: Tanac Automation Co Ltd
Current assignee: Tanac Automation Co Ltd
Priority date: 2021-10-27
Filing date: 2021-10-27
Publication date: 2022-04-08
Anticipated expiration: 2031-10-27

Abstract

A clamping mechanism comprises a clamping jaw cylinder, a clamping head seat and a clamping head; a first air channel interface and a second air channel interface are arranged on the clamping jaw air cylinder; the chuck base is provided with mounting holes, a ball plunger is screwed in the mounting hole of one chuck base, ball abutting columns are screwed in the mounting holes of the other chuck base, and the ball plunger and the ball abutting columns are respectively arranged on opposite side surfaces of the chuck base. This fixture passes through the cylinder and adjusts opening and shutting of chuck to setting up bulb plunger and bulb butt joint post between two chucks, making between two chucks produce a certain amount of space naturally after the closure, and can be through the bulb plunger of changing different elasticity, thereby reach the purpose of adjusting the double-layered line dynamics, simple structure, the cost of manufacture is low, and the effect is stable.

Description

Clamping mechanism

Technical Field

The utility model relates to the technical field of mechanical equipment, in particular to a clamping mechanism.

Background

The clamping mechanism is an auxiliary mechanism of the full-automatic winding machine and has the function of fixing the enameled wire in the process of feeding and discharging the enameled wire alternately between the front product and the rear product without falling off. The main steps include gripping the sleeve, threading, moving the wire up and out of the sleeve, pulling the wire down and removing the sleeve. Different wire clamping forces are required to be set during the operation of the steps, and the wire clamping force in the prior art is generally constant.

Chinese patent No. 200820146248.9 discloses that a "full-automatic coiling machine fixture" includes a cylinder, is equipped with the catch bar of an up-and-down motion on the cylinder and connects a pendulum rod, and the pendulum rod rotates around a pivot, and on the pivot was fixed in a connecting seat, the fixed movable clamping bar that is equipped with on this pendulum rod matched with movable clamping bar and is equipped with a fixed clamping bar, and on the fixed clamping bar was fixed in the connecting seat, the connecting seat was fixed in on the cylinder, this kind of structure can be through the cylinder regulation double-layered line dynamics, but the design is complicated, and the cost of manufacture is high, and the precision is lower.

SUMMERY OF THE UTILITY MODEL

In view of the above, the utility model provides a clamping mechanism which can clamp a wire with a high wire clamping precision and has a simple structure, so as to meet industrial requirements.

A clamping mechanism comprises a clamping jaw cylinder, two clamping jaw seats and two clamping heads, wherein the two clamping jaw seats are respectively connected with two output ends of the clamping jaw cylinder; two first air channel interfaces and two second air channel interfaces are arranged on the clamping jaw air cylinder; the two chuck seats are respectively provided with a mounting hole, the mounting hole of one chuck seat is screwed with a ball plunger, the mounting hole of the other chuck seat is screwed with a ball abutting column, and the ball plunger and the ball abutting column are respectively arranged on the opposite side surfaces of the two chuck seats.

Furthermore, a sliding groove is concavely arranged on one side of the clamping jaw cylinder facing the clamping jaw seat, and arc-shaped grooves are concavely arranged on two opposite inner side walls of the sliding groove; two output ends of the clamping jaw air cylinder are respectively connected with a sliding block, and the two sliding blocks are connected in the sliding groove in a sliding mode and are clamped with the arc-shaped groove; the two sliding blocks are respectively connected with a clamping head seat.

Furthermore, the end part of the chuck seat far away from the sliding groove is convexly provided with a connecting block, the opposite side surfaces of the two connecting blocks are concavely provided with clamping grooves, and each chuck is arranged in one clamping groove.

Furthermore, the middle parts of the opposite side surfaces of the two chucks are provided with semicircular grooves along the vertical direction; and chamfers are arranged at the tops of the two semicircular grooves.

Furthermore, two mounting holes are formed in the connecting blocks at intervals, a ball plunger is fixedly connected in each of the two mounting holes of one connecting block in a screwed mode, and a ball abutting column is fixedly connected in each of the two mounting holes of the other connecting block in a screwed mode.

Furthermore, the ball plunger comprises a barrel, a counter bore is formed in the barrel along the central axis of the barrel, a spring is arranged in the counter bore, and a steel ball is clamped at an opening of the barrel.

Furthermore, the ball plunger and the central axis of the ball abutting column are located on the same straight line.

Compared with the prior art, the clamping mechanism provided by the utility model has the advantages that the opening and closing of the chucks are adjusted through the air cylinder, and the ball head plunger and the ball head abutting column are arranged between the two chucks, so that a certain amount of gap is naturally generated between the two chucks after the two chucks are closed, and the purpose of adjusting the wire clamping force can be achieved by replacing the ball head plungers with different elastic forces.

Drawings

Fig. 1 is a schematic structural diagram of a clamping mechanism provided in the present invention.

FIG. 2 is a schematic structural diagram of the slider shown in FIG. 1.

Fig. 3 is a schematic structural view of the chuck of fig. 1.

Fig. 4 is a cross-sectional view of the ball plunger of fig. 1.

Detailed Description

Specific examples of the present invention will be described in further detail below. It should be understood that the description herein of embodiments of the utility model is not intended to limit the scope of the utility model.

As shown in fig. 1 to 4, which are schematic structural views of the clamping mechanism provided in the present invention. The clamping mechanism includes a clamping jaw cylinder 10 having one end connected to the external frame, two chuck bases 20 connected to two output ends of the clamping jaw cylinder 10, and two chucks 21 mounted on opposite sides of the two chuck bases 20 and away from one end of the clamping jaw cylinder 10, and further includes other functional modules, such as fastening screws, etc., which should be known to those skilled in the art, and will not be described in detail herein.

The clamping jaw cylinder 10 is provided with two first air passage ports 11, two second air passage ports 12, and a sliding groove 13 concavely arranged on one side of the clamping jaw cylinder 10 facing the clamping jaw seat 20. The first air passage port 11 and the second air passage port 12 may be opened only one at the same time. Arc-shaped grooves 131 are concavely arranged on two opposite inner side walls of the sliding groove 13. Two output ends of the clamping jaw cylinder 10 are respectively connected with a sliding block 14, and two sliding blocks 14 are connected in the sliding groove 13 in a sliding mode and are connected with the arc-shaped groove 131 in a clamping mode.

The two output ends of the clamping jaw cylinder 10 are used for driving the two sliding blocks 14 to move towards each other or move away from each other.

The two sliding blocks 14 are respectively connected with a chuck base 20. The end of the chuck base 20, which faces away from the sliding groove 13, is provided with a connecting block 201 in a protruding manner, and the opposite end surfaces of the two connecting blocks 201 are provided with a clamping groove 202.

Each collet 21 is mounted in a clamping slot 202.

The opposite end surfaces of the two chucks 21 are both provided with semicircular grooves 211 with the same radius. The two semicircular slots 211 close into a circular hole for insertion of the wire and the cannula. The edge portions of the two semicircular grooves 211 are provided with an R-angle, thereby preventing external factors such as burrs from affecting the insertion of the wire and the sleeve. And the top of the semicircular groove 211 is provided with a chamfer angle, so that the insertion of the wire rod and the sleeve is smoother.

Two mounting holes 203 are formed in the connecting block 201 at intervals, a ball plunger 22 is fixedly connected in the two mounting holes 203 of one connecting block 201 in a threaded manner, and a ball abutting column 23 is fixedly connected in the two mounting holes 203 of the other connecting block 201 in a threaded manner.

The ball plunger 22 comprises a cylinder 221, the cylinder 221 is provided with a counter bore along the central axis thereof, a spring 222 is arranged in the counter bore, and a steel ball 223 is clamped at an opening of the cylinder 221. The central axes of the ball plunger 22 and the ball abutting column 23 are located on the same straight line. It is conceivable that the ball plungers 22 with different elastic properties can be replaced, and the size of the gap between the chucks 21 can be adjusted, so that the wire rods and the sleeves with different thickness specifications can be matched.

When the first air channel interface 11 is opened, the two sliding blocks 21 move oppositely; when the second air passage port 12 is opened, the two sliding blocks 21 are away from each other.

When both the first air passage ports 11 are opened, the two sliding blocks 21 slide toward each other until the two chucks 21 abut against each other, and the ball plunger 22 abuts against the ball abutment post 23.

A first air passage connection 11 is then closed. Due to the reduction of the driving force, the elastic force of the spring 222 pushes the two chucks 21 open, so that the distance between the two semicircular grooves 211 is increased, and the insertion of the wire and the sleeve is facilitated. Then, after the wire and the sleeve are inserted, the closed first air passage port 11 is opened again to clamp the wire and the sleeve to prevent the wire and the sleeve from falling. When the chuck 21 needs to be loosened, the two first air passage ports 11 are closed, and the two second air passage ports 12 are opened.

Compared with the prior art, the clamping mechanism provided by the utility model has the advantages that the opening and closing of the chucks 21 are adjusted through the air cylinder, and the ball plunger 22 and the ball abutting column 23 are arranged between the two chucks 21, so that a certain amount of gap is naturally generated between the two chucks 21 after the two chucks 21 are closed, and the purpose of adjusting the wire clamping force can be achieved by replacing the ball plungers 22 with different elastic forces.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, and any modifications, equivalents or improvements that are within the spirit of the present invention are intended to be covered by the following claims.

Claims

1. A fixture, its characterized in that: the clamping mechanism comprises a clamping jaw cylinder, two clamping head seats respectively connected with two output ends of the clamping jaw cylinder, and two clamping heads respectively arranged on opposite side surfaces of the two clamping head seats and far away from one end of the clamping jaw cylinder; two first air channel interfaces and two second air channel interfaces are arranged on the clamping jaw air cylinder; the two chuck seats are respectively provided with a mounting hole, the mounting hole of one chuck seat is screwed with a ball plunger, the mounting hole of the other chuck seat is screwed with a ball abutting column, and the ball plunger and the ball abutting column are respectively arranged on the opposite side surfaces of the two chuck seats.

2. The clamping mechanism of claim 1, wherein: one side of the clamping jaw cylinder facing the clamping jaw seat is concavely provided with a sliding groove, and two opposite inner side walls of the sliding groove are concavely provided with arc-shaped grooves; two output ends of the clamping jaw air cylinder are respectively connected with a sliding block, and the two sliding blocks are connected in the sliding groove in a sliding mode and are clamped with the arc-shaped groove; the two sliding blocks are respectively connected with a clamping head seat.

3. The clamping mechanism of claim 2, wherein: the end part of the chuck seat, which is far away from the sliding groove, is convexly provided with connecting blocks, the opposite side surfaces of the two connecting blocks are concavely provided with clamping grooves, and each chuck is arranged in one clamping groove.

4. The clamping mechanism of claim 3, wherein: the middle parts of the opposite side surfaces of the two chucks are provided with semicircular grooves along the vertical direction; and chamfers are arranged at the tops of the two semicircular grooves.

5. The clamping mechanism as recited in claim 3, wherein two mounting holes are arranged on the connecting block at intervals, a ball plunger is fixed in each of the two mounting holes of one connecting block by screw connection, and a ball abutment column is fixed in each of the two mounting holes of the other connecting block by screw connection.

6. The clamping mechanism of claim 1, wherein: the ball plunger comprises a barrel, a counter bore is formed in the barrel along the central axis of the barrel, a spring is arranged in the counter bore, and a steel ball is clamped at an opening of the barrel.

7. The clamping mechanism of claim 1, wherein: the ball plunger and the central axis of the ball abutting column are located on the same straight line.