WO2018207982A1

WO2018207982A1 - Tool changer

Info

Publication number: WO2018207982A1
Application number: PCT/KR2017/012671
Authority: WO
Inventors: 정선호
Original assignee: 주식회사 로파
Priority date: 2017-05-12
Filing date: 2017-11-09
Publication date: 2018-11-15
Also published as: KR101789248B1

Abstract

Disclosed is a tool changer. In the tool changer, a tool is inserted into a connection pipe, wherein the connection pipe has: an operation inner diameter part which is coupled to a housing while extending in the axial direction, and rotatably accommodates a locking drive part; and ball entry holes which are formed so as to be radially penetrating such that locking balls are partially exposed outward, and according to a rotating position of a locking drive shaft, allow the plurality of locking balls to move between a locking position in which the locking balls are exposed outward and a releasing position in which the locking balls can move inward. Then, an operation lever is rotated such that a ball operation wave-shape part connected to the locking drive shaft of the locking drive part moves the locking balls to the locking position, and thus the tool can be quickly installed, wherein the operation lever has one end coupled to the locking drive shaft via an operation slot and the other end exposed to the outside of the operation slot, and can rotate the locking drive shaft. Subsequently, the operation lever is fixed to an operation lever fixing groove, and thus the coupling strength of the tool can be increased.

Description

Tool changer

The present invention relates to a tool changer, and more particularly, to a tool changer that can easily attach and detach various tools.

Production facilities such as various molding facilities and processing facilities are equipped with various types of tools to perform various tasks. For example, if a cutting tool is installed in a production facility using hydraulic pressure and the product is being cut, and the cutting tool is to be carried out after the cutting operation is completed, the cutting tool is detached and a grip tool for transferring is used to grab the product. can do.

However, the replacement of these tools should be done by removing bolts or connecting pins, separating tools and devices, placing new tools on the equipment, and installing them by inserting bolts or connecting pins. . This takes a lot of time to replace the tool, there is a problem that the work efficiency falls.

It is therefore an object of the present invention to provide a tool changer capable of quickly replacing a tool.

Tool changer according to the present invention for achieving the above object, the tool changer, the housing having a rotating shaft hole along the axial direction and the operation slot formed through a predetermined circumferential angular section in the radial direction from the rotating shaft hole; A locking driver having a locking drive shaft rotatably received in the rotating shaft hole and a plurality of ball operating waveforms extending in an axial direction from the locking driving shaft and formed in a waveform along the circumferential direction; A locking ball respectively accommodated in the ball operation waveform; The inner working diameter portion coupled to the housing to extend along the axial direction and rotatably accommodating the locking driving portion, and radially penetrating so that the locking balls can be partially outwardly exposed, according to the rotational position of the locking driving shaft. A connection pipe having a ball entry hole to move the locking balls to an outwardly exposed locking position and an inwardly movable release position; And an operation lever having one end coupled to the locking drive shaft through the operation slot and the other end exposed to the outside of the operation slot to rotate the locking drive shaft. This allows the tool to be mounted simply and quickly.

Here, the internal diameter of the cross section of the ball operation waveform is gradually reduced. As a result, the locking ball may be exposed to the outside of the working inner diameter to be fixed to a high bonding strength.

The housing has an operation lever fixing groove recessed in a direction different from the longitudinal direction of the operation slot from the end of the operation slot, and the operation lever is connected to the locking drive shaft to rotate along the operation slot. And a fixing lever bent from the pivot lever and accommodated in the operation lever fixing groove. Thereby, the operating lever can be fixed to firmly fix the mounted tool.

According to the present invention, the tool is positioned to receive the connection pipe and the operating lever is rotated so that the locking ball is moved to the ball entrance hole formed in the connection pipe so that the tool is located in the locking position so that the tool can be easily and quickly mounted.

1 shows a tool changer according to the invention.

2 is an exploded perspective view showing the tool changer in detail.

3 is a view showing that the locking ball is moved to the locking position while the locking drive shaft rotates.

4 is a view showing that the operation lever is operated.

** Description of the symbols for the main parts of the drawings **

1: tool changer 2: tool

10 housing 11 rotation shaft hole

11-1: Mounting female thread 12: Operation slot

13: operating lever fixing groove 20: locking drive unit

21: ball support portion 22: ball operating waveform portion

23: operating lever connecting hole 24: locking drive shaft

30: rocking ball 40: connector

41: inner diameter of operation 42: rotation receiving work

43: ball hole 44: mounting male thread

50: operation lever 51: rotation lever

51-1: Bending Insert 51-2: Bending Connector Pin

51-3: locking connection 52: fixed lever

52-1: bending insertion part

Hereinafter, the tool changer 1 according to the preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a view showing a tool changer 1 according to the present invention, and FIG. 2 is an exploded perspective view showing the tool changer 1 in detail. The tool changer 1 includes a housing 10, a locking drive unit 20, a locking ball 30, a connection pipe 40, and an operation lever 50. The work tool is connected to the connecting tube 40 and supported by the housing 10.

The housing 10 has a rotation shaft hole 11 along the axial direction and an operation slot 12 formed therethrough through a predetermined circumferential angular section in the radial direction from the rotation shaft hole 11. The housing 10 has a cylindrical shape of a cylinder, and the rotating shaft hole 11 is formed up and down on the upper surface of the cylinder. On the inner surface of the rotating shaft hole 11 is installed mounting thread 11-1 for installing the inner working portion 41 to be described later. Although the working inner diameter 41 is illustrated as being coupled to the housing 10 by screwing, it is not limited thereto and may be coupled by various couplings that are firmly coupled. An operating slot 12 is formed on the side of the housing 10 to allow the operation lever 50 to be described later to penetrate and rotate in a circumferential direction about the rotation axis of the rotation shaft hole 11. The length of the operation slot 12 may be determined according to the size of the locking ball 30 and the size of the ball operation waveform 22 to be described later. The operation lever fixing groove 13 is formed recessed from the end of the operation slot 12 in a direction different from the longitudinal direction of the operation slot. The operation lever fixing groove 13 may have a bite shape or a fitting shape in which protrusions are formed from the depression start area so that the operation lever 50 may be bitten or fitted into the groove into which the operation lever 50 is seated.

The locking driving unit 20 extends along the axial direction from the locking driving shaft 24 and the locking driving shaft 24 rotatably received in the rotation shaft hole 11 and has a plurality of ball operating waveforms formed in a waveform along the circumferential direction. Has (22). The locking driving part 20 has a plurality of ball supporting parts 21 for supporting each of the plurality of locking balls 30 in the rotation receiving hole 42 of the operating inner diameter part 41. The plurality of ball supporting portions 21 serves as a support to support the plurality of locking balls 30 so as not to descend. When the locking ball 30 is moved from the locking position to the release position, the locking ball 30 may be caught on the inner side of the inner working portion 41 and may not be properly positioned at the locking position of the ball access hole 43. Since it may also be provided with a ball support 21 to prevent this.

The cross section of the locking drive unit 20 has a shape in which the inner diameter gradually decreases in a predetermined section in the circumferential direction. The ball operation waveform portion 22 is a portion having a shape in which the inner diameter gradually decreases. The outer side of the cross section of the ball operating waveform portion 22 having a diameter from the axis of the locking drive shaft 24 has a slowly decreasing portion and a rapidly rising portion along the circumferential direction in which it is locked. The locking driving unit 20 has an operating lever connecting hole 23 to which the operating lever 50 is coupled. An internal thread may be formed on the inner surface of the operation lever connecting hole 23. The operation lever connecting hole 23 is formed in the locking drive shaft 24 extended in the transverse direction with respect to the rotation axis from a predetermined portion of the locking drive section 20. The outer diameter of the locking drive shaft 24 is formed smaller than the inner diameter of the rotation shaft hole (11). This is because after the locking drive shaft 24 of the locking drive unit 20 is inserted into the rotating shaft hole 11, the working inner diameter 41 is installed in the rotating shaft hole 11 so that the locking driving unit 20 is the operating inner diameter ( 41) is prevented from being released in the opposite direction of the installation direction. Since the locking driving unit 20 is not fixedly coupled to the operating inner diameter part 41 and the housing 10, the locking driving part 20 may be rotated with respect to the operating inner diameter part 41 and the housing 10.

The locking ball 30 has a circular sphere shape and the material is made of iron material. The locking balls 30 are accommodated in the ball operating waveforms 22 of the rotation receiving holes 42 of the operating inner diameter 41, respectively.

The connection pipe 40 is coupled to the housing 10 in an axial direction so that the operating inner diameter 41 and the locking ball 30 which rotatably receive the locking drive part 24 may be partially exposed outward. A through-hole formed in a radial direction has a ball entry hole 43 for allowing a plurality of locking balls 30 to move between an outwardly exposed locking position and an inwardly movable release position according to the rotational position of the locking drive shaft 24. .

The operating inner diameter portion 41 is inserted into and installed in the rotation shaft hole 11 of the housing 10, and a rotation accommodation hole 42 is formed along the rotation axis of the rotation shaft hole 11 and enters and exits in the circumferential direction. A ball 43 is formed. The operating inner diameter portion 41 is provided with a mounting male thread 44 to be inserted into the rotating shaft hole 11 of the housing 10 along the circumference thereof. The mounting male thread 44 is fixed to the mounting female thread 11-1 of the housing 10 by screwing. The rotation receiving hole 42 of the operating inner diameter portion 41 is formed downward from the upper surface center region and has a receiving space for receiving the locking driving portion 20. The ball access hole 43 of the operating inner diameter portion 41 is formed along the circumferential direction of the operating inner diameter portion 41, and has a cross section of a circular groove in which the locking ball 30 is moved and seated. The ball access hole 43 is formed smaller than the diameter of the locking ball 30 so that the locking ball 30 does not escape to the outside.

One end of the operation lever 50 may be coupled to the locking drive shaft 24 through the operation slot 12, and the other end may be exposed to the outside of the operation slot 12 to rotate the locking drive shaft 24. The control lever 50 is connected to the locking driving unit 20 and is rotated from the rotation lever 51 rotated along the operation slot 12 and the rotation lever 51 to be accommodated in the operation lever fixing groove 13. 52).

The rotation lever 51 is connected to the locking driver 20 to rotate the locking driver 20. The end of the rotation lever 51 is provided with a locking connection end 51-3 which is pivotally coupled to a female screw thread formed inside the operation lever connecting hole 23 of the locking driving unit 20. The locking connection end 51-3 may be a male thread. Although the locking connection end 51-3 and the operating lever connecting hole 23 are illustrated as being coupled by screw coupling, they may be fixed by being coupled by anchor bolt coupling, rivet coupling, welding coupling, or the like. The bending insertion part 51-1 is formed in the other side in which the locking connection end 51-3 of the rotation lever 51 was formed. The bent insertion portion 51-1 is protruded in the longitudinal direction.

The fixed lever 52 is bent and rotated from the rotation lever 51 to be inserted into the operation lever fixing groove 13. The fixed lever 52 is provided in a rod shape to prevent the locking drive unit 20 from being rotated in the opposite direction in the biting direction by being pinched or fitted in the bite shape or the fitting shape of the operating lever fixing groove 13.

At one end of the fixed lever 52, a bent insertion accommodating part 52-1 is formed which accommodates the bent insertion part 51-1 of the pivoting lever 51.

The pivoting lever 51 has the bending connecting pin 51-2 bent insertion part 51-1 so that the bending inserting part 51-1 is mutually rotatable in the state accommodated in the bending insert receiving part 52-1. ) And the bending insert accommodation portion 52-1.

3 is a view showing that the locking ball 30 is moved to the bite position while the working inner diameter 41 is rotated.

(a) The locking drive part 20 is accommodated in the rotation accommodation hole 42 of the operation inner diameter part 41, and is a state before the ball operation waveform part 22 of the locking drive part 20 is rotated. Thus, the locking ball 30 is not seated in the ball entry hole 43 of the operating inner diameter portion 41, but is located at a release position which is a receiving space of the rotation receiving hole 42 of the operating inner diameter portion 41.

(b) In the state of (a), the tool 2 is positioned while receiving the operating inner diameter portion 41. When the tool 2 is placed in the mounting position, the user rotates the operation lever 50 to the right. Thus, the locking ball 30 is locked by the ball operating waveform part 22 having a shape in which the inner diameter gradually decreases while the locking drive unit 20 rotates counterclockwise. It is pushed to a position and moves. As a result, the ball operating waveform portion 22 is locked to the locking ball 30.

4 shows that the operation lever 50 is operated.

(a) The operating lever 50 connected to the locking drive unit 20 in the state of FIG. 3 (a), that is, before the ball operating waveform 22 of the locking drive unit 20 is rotated, is operated by the operation slot 12. It is located at the left end of the.

(b) The user pushes the rotation lever 51 of the operation lever 50 located at the left end of the operation slot 12 to the right to rotate the locking drive unit 20 so that the ball operation waveform 22 is the locking ball 30. ) And bite. Then, when the user raises the fixing lever 52 to be bent upward from the rotation lever 51, the fixing lever 52 is bent and snapped or inserted into the bite shape or the fitting shape of the operating lever fixing groove 13 to lock the driving part 20. ) Is prevented from rotating in the reverse direction of the bite direction.

Due to the tool changer 1 described above, the connecting pipe 40 is installed in the housing 10 in which the rotation shaft hole 11 penetrated in the rotation axis direction is formed. The connection pipe 40 has a working inner diameter portion 41 and a plurality of locking balls having a rotation accommodation hole 42 formed along a rotation axis of the rotation shaft hole 11 and a ball entry hole 43 formed along a circumferential direction thereof. 30) having a plurality of ball support portions 21 for supporting each of the plurality of locking balls 30 are accommodated in the rotation receiving ball 42 and rotated about the rotation axis, the locking ball 30 is ball entry hole 43 It has a locking drive unit 20 to move between the bite position and the release position to prevent. A tool formed to be connected to the operating inner diameter part 41 is positioned while receiving the operating inner diameter part 41 and the operating lever 50 is rotated so that the locking ball 30 is moved out of the operating inner diameter part 41 to a bite position. Being located in the tool can be easily and quickly mounted to the connection pipe (40). The operation lever 50 is fixed to the operation lever fixing groove 13 to increase the coupling strength of the tool.

The present invention can be used for a tool changer.

Claims

In the tool changer,

A housing having a pivot shaft hole along an axial direction and a manipulation slot formed through the circumferential angular section in a radial direction from the pivot shaft hole;

A locking driver having a locking drive shaft rotatably received in the rotating shaft hole and a plurality of ball operating waveforms extending in an axial direction from the locking driving shaft and formed in a waveform along the circumferential direction;

A locking ball respectively accommodated in the ball operation waveform;

The inner working diameter portion coupled to the housing to extend along the axial direction and rotatably accommodating the locking driving portion, and radially penetrating so that the locking balls can be partially outwardly exposed, according to the rotational position of the locking driving shaft. A connection pipe having a ball entry hole to move the locking balls to an outwardly exposed locking position and an inwardly movable release position; And

An operation lever having one end coupled to the locking drive shaft through the operation slot and the other end exposed to the outside of the operation slot to rotate the locking drive shaft;

When the locking driving unit rotates, the ball operating waveform pushes the locking ball outward in the radial direction, and the locking ball is pressed to the inner wall surface of the connection pipe through the ball access hole so that the ball operating waveform and the locking ball are rotated. Tool changer characterized in that the bite lock.
The method of claim 1,

Tool changer, characterized in that the cross-section of the ball operation waveform portion gradually decreases.
The method of claim 1,

The housing has an operation lever fixing groove recessed from the end of the operation slot in a direction different from the longitudinal direction of the operation slot,

The operation lever is a tool changer, characterized in that it is connected to the locking drive shaft and rotates along the operation slot, the fixed lever bent from the rotation lever is received in the operation lever fixing groove.