TW201929996A - Tool changer - Google Patents

Abstract

Present invention provides a tool changer adapted for changing tools between tool magazine and machine tool. The tool changer includes a cam box and a tool changing arm. The cam box can move and rotate the tool changing arm. An abutting member is disposed on the tool changing arm. The abutting member is able to slide vertically. The abutting member has an abutting pole which extends upwardly and penetrates a top surface of the tool changing arm. The abutting pole presses against the cam box when the tool changing arm is moved upwardly. The abutting pole is encircled by an anti-moisture member. When the tool changing arm is moved upwardly, the anti-moisture member abuts against both the tool changing arm and the cam box. Therefore, tolerance gap between the abutting pole and the tool changing arm is sealed by the anti-moisture member. Cutting fluid is prevented from flowing into the tool changing arm. The tool changer can standby beside the machine tool without losing operational function.

Description

Tool change mechanism

The present invention relates to a cooperative machine for an automatic processing machine for replacing a tool between an automatic processing machine and a tool magazine.

The tool change mechanism can be used to change the tool between the automatic processing machine and the tool magazine. In the process of changing the tool, especially when the tool is removed from the processing machine, the tool change mechanism needs to clamp the tool with a certain force, even The tool needs to be locked to prevent the tool from accidentally falling out.

The existing tool change mechanism can refer to FIG. 1 and FIG. 2 , and includes a chassis 11 , a spindle 12 and a cutter arm 13 . The bottom side of the chassis 11 has a bearing portion 14 , and the chassis 11 is provided with a cam structure, which can be in a certain order. The mandrel 12 is horizontally rotated and vertically moved in the axial direction. The arm 13 is mounted and fixed to the mandrel 12, and rotates and moves together with the mandrel 12. The arcuate blade portion is formed at both ends of the arm 13 away from the mandrel 12. The blade arm 13 is additionally provided with a radially slidable buckle 16 and an axially movable latching block 17 . The upper end of the latching block 17 extends through an opening 131 formed in the arm 13 on the spindle 12 . When moving up, the upper end of the block 17 is pressed against the bearing portion 14 and is retracted. One end of the clip 16 extends away from the mandrel 12 and faces the blade portion 15, and can be clamped and fastened together with the blade portion 15. The cutter 18 and the other end of the clip 16 are opposite to the block 17. When the block 17 slides up, the block 17 abuts against the clip 16, so that the clip 16 cannot slide, and the cutter 18 is firmly clamped. Between the buckle 16 and the buckle portion 15; referring to FIG. 3, when the mandrel 12 is moved up, the block 17 is pressed against the bearing portion 14 and thus moves downward relative to the blade arm 13. I.e. without the card 16 abuts against the block 17, radially movable, the cutter 18 can push the clip 16, the clip 16 from And the blade portion 15 is separated.

When the above-mentioned tool change mechanism is used, there may be a case where the tool cannot be surely locked. Since the tool change mechanism is operated in conjunction with the automatic processing machine, in order to save the working time, the tool is directly engaged and changed when needed, and the tool change mechanism needs to be held by the automatic processing machine in the state shown in Fig. 3, and automatically At the working site of the processing machine, a large amount of cutting fluid is often splashed around, and the cutting fluid enters the arm 13 through the gap between the upper end of the block 17 and the opening 131, and is filled around the block 17, causing the block 17 to move. The problem of slowness, difficulty, or inability to move to the predetermined position, in conjunction with the sliding of the buckle 16, causes the tool to be released by the tool changer too early or too late during the tool change process, affecting the tool change process, and may even damage the tool or automatically Processing machine.

It is an object of the present invention to provide a tool change mechanism that maintains a predetermined operational efficiency at the job site of the automated processing machine and releases the locking tool at a predetermined stroke or time point.

In order to achieve the above and other objects, the present invention provides a tool change mechanism including a machine base, a tool change arm, at least one top member and at least one water stop member. The base has a drive shaft that drives the drive shaft to move in an axial direction. The tool changer arm is disposed on the drive shaft and moves between the first position of the drive shaft adjacent to the base and the second position away from the base, the change arm having an upper surface facing the base, The tool changer arm has an opening in the upper surface, and the upper surface has an axial movement space between the upper surface and the base. The top member has a top rod, and the top member is slidably disposed on the tool change arm, and the top rod extends from the opening into the axial movement space. The water stop member has a set of holes, the water stop member is received in the axial movement space, the plunger is inserted into the sleeve hole, and the axial height of the water stop member is not less than the tool change arm The axial direction in the first position The axial height of the moving space.

Thereby, the tool change mechanism provided by the invention can be installed in the tool magazine and the automatic processing machine, and the tool is exchanged between the tool magazine and the automatic processing machine. When the automatic processing machine performs machining, the tool change mechanism can be automatically processed. Stand by the machine, use the water stop member to be placed between the tool change arm and the base, and close the gap between the top rod and the tool change arm of the top piece to prevent the cutting fluid from entering the tool change arm, so that the tool change mechanism The action flow remains normal.

11‧‧‧Chassis

12‧‧‧ mandrel

13‧‧‧ Arm

131‧‧‧ openings

14‧‧‧Responsible Department

15‧‧‧Knife

16‧‧‧ buckle

17‧‧‧ card block

311‧‧‧Opening

32‧‧‧Knife

40‧‧‧Top conditions

41‧‧‧Pole

42‧‧‧ Spring

50‧‧‧Clip components

51‧‧‧Bumps

52‧‧‧Flexible parts

18‧‧‧Tools

20‧‧‧ machine base

21‧‧‧ drive shaft

22‧‧‧Responsible Department

30‧‧‧Changer arm

31‧‧‧ upper surface

60‧‧‧ water stop

61‧‧‧ wear layer

62‧‧‧Rubber layer

63‧‧‧Setting holes

90‧‧‧Tools

Figure 1 is a side elevational cross-sectional view of a conventional tool change mechanism.

Figure 2 is a bottom cross-sectional view of a conventional tool change mechanism.

Figure 3 is a side elevational cross-sectional view showing another operation of the conventional tool change mechanism.

Figure 4 is a side elevational cross-sectional view showing the tool change mechanism of the first embodiment of the present invention.

Fig. 5 is a partial enlarged view of Fig. 4.

Figure 6 is a bottom plan view, partly in section, of the tool change mechanism of the first embodiment of the present invention.

Figure 7 is an exploded perspective view of the top member and the water stop member of the first embodiment of the present invention.

Figure 8 is a cross-sectional view showing a water stop member according to another embodiment of the present invention.

Figure 9 is a cross-sectional view showing a water stop member according to still another embodiment of the present invention.

Figure 10 is a side elevational cross-sectional view showing another operation of the tool change mechanism of the first embodiment of the present invention.

Fig. 11 is a partially enlarged view of Fig. 10.

Figure 12 is a side elevational cross-sectional view showing the tool change mechanism of the second embodiment of the present invention.

Fig. 13 is a partially enlarged view of Fig. 12.

Figure 14 is a side elevational cross-sectional view showing another action of the tool change mechanism of the second embodiment of the present invention.

Fig. 15 is a partially enlarged view of Fig. 14.

The embodiment provides a tool change mechanism, which can exchange a tool between a tool magazine storing an automatic processing machine tool and a spindle of an automatic processing machine, and exchange the tool in the tool magazine with the tool in the spindle of the automatic processing machine, thereby achieving Automatic machine tool change function. Referring to FIGS. 4-7, the tool change mechanism of the present embodiment includes a base 20, a change arm 30, two top members 40, two clamping members 50 and two water stopping members 60.

The base 20 has a transmission shaft 21 extending from the bottom, and defines an axial direction according to the transmission shaft 21. The base 20 is provided with a cam set, which can be driven by a motor or other power device to drive the transmission shaft 21 It moves in the axial direction and rotates in the axial direction in a predetermined order. The bottom of the base 20 further has a bearing portion 22, and the bearing portion 22 does not move in the axial direction with the drive shaft 21, and thus can be abutted by other components.

The tool changer arm 30 is disposed on the drive shaft 21. When the drive shaft 21 moves or rotates, the tool change arm 30 also moves along with one another. The change arm 30 has an upper surface 31 facing the bearing portion 22, and the change arm 30 has the same The opening 311 of the upper surface 31 has an axial movement space between the upper surface 31 and the bearing portion 22. The two ends of the tool change arm 30 are radially extended by the transmission shaft 21, and the tool change arm 30 has two knives. The portion 32 and the two blade portions 32 are respectively located at both ends of the tool change arm 30, and the blade portion 32 has a circular arc-shaped recess for abutting against the cutter 90.

The top member 40 is disposed on the tool change arm 30 and is movable in the axial direction relative to the tool change arm 30. The top pin member 40 has a top rod 41, and the top rod 41 is opened from the upper surface 31 of the tool change arm 30. The 311 extends through the axial movement space between the upper surface 31 and the bearing portion 22. The top member 40 further includes a spring 42 that pushes against the tool change arm 30 to reset the top member 40 and its top rod 41 upwardly.

The clamping member 50 is disposed in the tool changing arm 30 and slidable relative to the tool changing arm 30. One end of the clamping member 50 has a protrusion 51. The protrusion 51 is opposite to the notch of the blade portion 32, and the cutter 90 can be used. The clip is between the projection 51 and the recess of the blade portion 32, so that the cutter 90 cannot be arbitrarily separated from the blade portion 32, and the other end of the jaw member 50 is extended along the tool change arm 30 to be opposed to the top jaw member 40. Abutting against the top member 40, the clamping member 50 cannot be arbitrarily moved; the top member 50 has an elastic member 52 that is pushed against the tool changing arm 30 to reset the top member 50 toward the blade portion 32 at any time.

The water stopping member 60 may be rubber, plastic or a composite material containing rubber or plastic. For example, please refer to FIG. 8. The water stopping member 60 is made of metal or other block in the rubber, or please refer to FIG. The water stop member 60 has a wear layer 61 at the top and a rubber layer 62 at the bottom. The wear layer 61 is made of a metal material, the wear layer 61 is connected to the rubber layer 62, and the wear layer 61 faces upwardly. Referring to FIGS. 4-7, the water stop 60 has a set of holes 63, the through holes 63 are through holes, and the shape of the sleeve holes 63 and the ejector of the top member 40 41 is a round shape for fitting, and is sleeved on the top rod 41 of the top jaw 40. The outer surface of the water stop member 60 may be cylindrical or polygonal, and the water stop member 60 is received by the bearing portion 22 and In the axial movement space between the upper surfaces 31, the ejector pins 41 of the top boring members 40 are inserted into the sleeve holes 63, so that the water stopping member 60 is sleeved on the ejector pins 41, wherein the sleeve holes in this embodiment The aperture of 63 is equal to or slightly smaller than the outer diameter of the jack 41, so the water stop 60 will be located at the top end of the jack 41 and move with the jack, if it is the hole of the sleeve 63 Greater than the outer diameter of the jack 41, the sealing member 60 from falling by gravity on the upper surface 31, it is also feasible.

When the tool changing mechanism is in use, the external power input base 20, such as electric power and motor, and the base 20 can drive the transmission shaft 21 to move in the axial direction, thereby driving the tool change arm 30 to move. Please refer to FIG. When the tool change arm 30 is moved to the first position, the tool change arm 30 moves closer to the base 20 and the bearing portion 22 thereof, and the top rod 41 of the top cymbal member 40 is pressed against the bearing portion 22, so that the top cymbal member 40 is opposite to the bearing portion 40. The tool changer arm 30 moves downward, and the top jaw member 40 no longer abuts against the clamp member 50. The clamp member 50 can be moved along the tool change arm 30. When the cutter 90 is stressed, the clamp member 50 and its projection 51 can be pushed. Separating from the blade portion 32 or moving from the outside into between the blade portion 32 and the bump 51; referring to Figures 10 and 11, when the blade changing arm 30 is moved to the first position, the bearing portion 22 is The axial movement space of the upper surface 31 is equal to or slightly smaller than the axial height of the water stop member 60, so that the water stop member 60 is sandwiched between the upper surface 31 of the tool change arm 30 and the bearing portion 22 of the machine base 20, And surrounding the ejector 41 through the portion exposed in the axial movement space, the water stop member 60 can close the gap between the ejector 41 and the opening 311 of the tool change arm 30, when the tool change mechanism is in standby by the automatic processing machine, The cutting fluid can be prevented from entering the tool change arm 30 to maintain the smoothness of the top jaw 40 moving within the tool change arm 30.

Referring to Figures 4 to 6, the base 20 can continue to drive the drive shaft 21 to the second position. The drive shaft 21 moves downward in the axial direction, and the jack 41 of the top member 40 is no longer supported. The portion 22 is pushed forward, and the top jaw 40 is reset upward and abuts against the clamping member 50, so that the clamping member 50 cannot be arbitrarily moved, and the cutter 90 cannot be moved by the clamping member 50, and thus cannot be separated from the buckle portion 32; The tool changer performs the tool change operation. In addition to the automatic machining opportunity to stop spraying the cutting fluid, the drive shaft 21 also drives the tool exchange, the tool change arm 30 will be driven to rotate, and the upper surface 31 can be left by the centrifugal force. When the liquid is collapsed, the residual cutting fluid does not enter the tool change arm 30 through the gap between the ejector 41 and the opening 311 of the tool change arm 30 during the tool change operation, and the top member can be maintained. 40 clearance of the moving path.

By using the above-mentioned tool changing mechanism, when the tool changing mechanism is in standby by the automatic processing machine, the cutting fluid used in the processing of the automatic processing machine is blocked by the water stopping member, and does not enter the moving path of the top piece in the tool changing arm. The path for avoiding the movement of the top member can be filled by the cutting fluid, and the movement of the top member can be maintained smoothly, thereby ensuring that the jaw member can operate according to a predetermined mode and maintaining the working efficiency of the tool change mechanism. can.

Referring to FIG. 12 to FIG. 15, in the second embodiment of the present invention, the components in the tool change mechanism and their connection relationship are similar to those of the first embodiment of the present invention shown in FIGS. 4 to 7. However, the sleeve hole of the water stop member 60 is a blind hole, and the ejector rod 42 is inserted into the sleeve hole of the water stop member 60, so that the water stop member 60 is sleeved on the top end of the ejector rod 42; please refer to the 14th and 15th. In the figure, when the tool change arm 30 is moved to the first position, the water stop member 60 is not only wrapped around the ejector pin 42 but also covers the top of the ejector pin 42 to perform a function similar to that of the first embodiment described above. .

Summarizing the above description, the tool change mechanism disclosed by the present invention can stand by the automatic processing machine, can effectively prevent the cutting fluid from entering the tool change arm during standby, maintain the original working efficiency of the tool change mechanism, and has a good use effect. The above-mentioned embodiments are only intended to illustrate and explain the technical content of the present invention, and the scope of the invention should be based on the scope of the patent application of the present invention.

Claims (9)

A tool changing mechanism comprises: a machine base having a transmission shaft, the machine base driving the transmission shaft to move in an axial direction; a tool change arm disposed on the transmission shaft and adjacent to the first seat of the machine base Moving between a position and a second position away from the base, the change arm having an upper surface facing the base, the change arm having an opening on the upper surface, the upper surface and the base An axial movement space; at least one top member having a ram member, the top member being slidably disposed on the tool change arm, the ejector pin extending from the opening in the axial movement space; At least one water stop member having a set of holes, the water stop member being received in the axial movement space, the plunger being inserted into the sleeve hole, the axial height of the water stop member being not less than the tool change arm The height of the axial movement space when in the first position. The tool changing mechanism of claim 1, wherein the sleeve hole penetrates the water stop member. The tool changing mechanism of claim 2, wherein an inner diameter of the sleeve hole corresponds to an outer diameter of the jack, so that the water stop member moves together with the top jaw. The tool changing mechanism of claim 1, wherein the sleeve hole of the water stop member is a blind hole. The tool changing mechanism of claim 1, wherein the water stopping member is a plastic, rubber or a composite material containing plastic or rubber. The tool changing mechanism of claim 1, wherein the water stopping member comprises a wear layer and a rubber layer connected to each other, the wear layer facing the machine base. The tool change mechanism of claim 1, wherein the outer surface of the water stop member is cylindrical. The tool change mechanism according to any one of the preceding claims, wherein the tool change arm The tool changing mechanism further includes a clamping member, the clamping member is slidably disposed on the tool changing arm, one end of the clamping member is opposite to the fastening blade portion, and the clamping member is further One end is opposite to the top member and is abutted against the top member. The tool change mechanism according to any one of the preceding claims, wherein the tool changer has a second blade portion, the tool change mechanism comprising two top and second water stop members, and further comprising The two clamping members are slidably disposed on the tool changing arm, and one end of each of the clamping members is opposite to one of the fastening portions, and the other end is opposite to and abutted against one of the top members.